vendor: add readline
This commit is contained in:
Mitchell Hashimoto
parent
a2f6bc628a
commit
6272b969d4
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# ChangeLog
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### 1.4 - 2016-07-25
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* [#60][60] Support dynamic autocompletion
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* Fix ANSI parser on Windows
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* Fix wrong column width in complete mode on Windows
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* Remove dependent package "golang.org/x/crypto/ssh/terminal"
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### 1.3 - 2016-05-09
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* [#38][38] add SetChildren for prefix completer interface
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* [#42][42] improve multiple lines compatibility
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* [#43][43] remove sub-package(runes) for gopkg compatiblity
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* [#46][46] Auto complete with space prefixed line
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* [#48][48] support suspend process (ctrl+Z)
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* [#49][49] fix bug that check equals with previous command
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* [#53][53] Fix bug which causes integer divide by zero panicking when input buffer is empty
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### 1.2 - 2016-03-05
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* Add a demo for checking password strength [example/readline-pass-strength](https://github.com/chzyer/readline/blob/master/example/readline-pass-strength/readline-pass-strength.go), , written by [@sahib](https://github.com/sahib)
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* [#23][23], support stdin remapping
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* [#27][27], add a `UniqueEditLine` to `Config`, which will erase the editing line after user submited it, usually use in IM.
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* Add a demo for multiline [example/readline-multiline](https://github.com/chzyer/readline/blob/master/example/readline-multiline/readline-multiline.go) which can submit one SQL by multiple lines.
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* Supports performs even stdin/stdout is not a tty.
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* Add a new simple apis for single instance, check by [here](https://github.com/chzyer/readline/blob/master/std.go). It need to save history manually if using this api.
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* [#28][28], fixes the history is not working as expected.
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* [#33][33], vim mode now support `c`, `d`, `x (delete character)`, `r (replace character)`
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### 1.1 - 2015-11-20
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* [#12][12] Add support for key `<Delete>`/`<Home>`/`<End>`
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* Only enter raw mode as needed (calling `Readline()`), program will receive signal(e.g. Ctrl+C) if not interact with `readline`.
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* Bugs fixed for `PrefixCompleter`
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* Press `Ctrl+D` in empty line will cause `io.EOF` in error, Press `Ctrl+C` in anytime will cause `ErrInterrupt` instead of `io.EOF`, this will privodes a shell-like user experience.
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* Customable Interrupt/EOF prompt in `Config`
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* [#17][17] Change atomic package to use 32bit function to let it runnable on arm 32bit devices
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* Provides a new password user experience(`readline.ReadPasswordEx()`).
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### 1.0 - 2015-10-14
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* Initial public release.
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[12]: https://github.com/chzyer/readline/pull/12
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[17]: https://github.com/chzyer/readline/pull/17
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[23]: https://github.com/chzyer/readline/pull/23
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[27]: https://github.com/chzyer/readline/pull/27
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[28]: https://github.com/chzyer/readline/pull/28
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[33]: https://github.com/chzyer/readline/pull/33
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[38]: https://github.com/chzyer/readline/pull/38
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[42]: https://github.com/chzyer/readline/pull/42
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[43]: https://github.com/chzyer/readline/pull/43
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[46]: https://github.com/chzyer/readline/pull/46
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[48]: https://github.com/chzyer/readline/pull/48
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[49]: https://github.com/chzyer/readline/pull/49
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[53]: https://github.com/chzyer/readline/pull/53
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[60]: https://github.com/chzyer/readline/pull/60
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@ -0,0 +1,22 @@
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The MIT License (MIT)
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Copyright (c) 2015 Chzyer
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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@ -0,0 +1,113 @@
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[](https://travis-ci.org/chzyer/readline)
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[](LICENSE.md)
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[](https://github.com/chzyer/readline/releases)
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[](https://godoc.org/github.com/chzyer/readline)
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[](#backers)
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[](#sponsors)
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<p align="center">
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<img src="https://raw.githubusercontent.com/chzyer/readline/assets/logo.png" />
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<a href="https://asciinema.org/a/32oseof9mkilg7t7d4780qt4m" target="_blank"><img src="https://asciinema.org/a/32oseof9mkilg7t7d4780qt4m.png" width="654"/></a>
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<img src="https://raw.githubusercontent.com/chzyer/readline/assets/logo_f.png" />
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</p>
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A powerful readline library in `Linux` `macOS` `Windows`
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## Guide
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* [Demo](example/readline-demo/readline-demo.go)
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* [Shortcut](doc/shortcut.md)
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## Repos using readline
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[](https://github.com/cockroachdb/cockroach)
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[](https://github.com/remind101/empire)
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[](https://github.com/youtube/doorman)
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[](https://github.com/bom-d-van/harp)
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[](https://github.com/abiosoft/ishell)
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[](https://github.com/robertkrimen/otto)
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[](https://github.com/Netflix/hal-9001)
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[](https://github.com/docker/go-p9p)
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[](https://github.com/mehrdadrad/mylg)
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## Feedback
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If you have any questions, please submit a github issue and any pull requests is welcomed :)
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* [https://twitter.com/chzyer](https://twitter.com/chzyer)
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* [http://weibo.com/2145262190](http://weibo.com/2145262190)
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## Backers
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Love Readline? Help me keep it alive by donating funds to cover project expenses!<br />
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[[Become a backer](https://opencollective.com/readline#backer)]
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<a href="https://opencollective.com/readline/backer/0/website" target="_blank"><img src="https://opencollective.com/readline/backer/0/avatar.svg"></a>
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<a href="https://opencollective.com/readline/backer/1/website" target="_blank"><img src="https://opencollective.com/readline/backer/1/avatar.svg"></a>
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<a href="https://opencollective.com/readline/backer/2/website" target="_blank"><img src="https://opencollective.com/readline/backer/2/avatar.svg"></a>
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<a href="https://opencollective.com/readline/backer/3/website" target="_blank"><img src="https://opencollective.com/readline/backer/3/avatar.svg"></a>
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||||
<a href="https://opencollective.com/readline/backer/4/website" target="_blank"><img src="https://opencollective.com/readline/backer/4/avatar.svg"></a>
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||||
<a href="https://opencollective.com/readline/backer/5/website" target="_blank"><img src="https://opencollective.com/readline/backer/5/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/6/website" target="_blank"><img src="https://opencollective.com/readline/backer/6/avatar.svg"></a>
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||||
<a href="https://opencollective.com/readline/backer/7/website" target="_blank"><img src="https://opencollective.com/readline/backer/7/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/8/website" target="_blank"><img src="https://opencollective.com/readline/backer/8/avatar.svg"></a>
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||||
<a href="https://opencollective.com/readline/backer/9/website" target="_blank"><img src="https://opencollective.com/readline/backer/9/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/10/website" target="_blank"><img src="https://opencollective.com/readline/backer/10/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/11/website" target="_blank"><img src="https://opencollective.com/readline/backer/11/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/12/website" target="_blank"><img src="https://opencollective.com/readline/backer/12/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/13/website" target="_blank"><img src="https://opencollective.com/readline/backer/13/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/14/website" target="_blank"><img src="https://opencollective.com/readline/backer/14/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/15/website" target="_blank"><img src="https://opencollective.com/readline/backer/15/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/16/website" target="_blank"><img src="https://opencollective.com/readline/backer/16/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/17/website" target="_blank"><img src="https://opencollective.com/readline/backer/17/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/18/website" target="_blank"><img src="https://opencollective.com/readline/backer/18/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/19/website" target="_blank"><img src="https://opencollective.com/readline/backer/19/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/20/website" target="_blank"><img src="https://opencollective.com/readline/backer/20/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/21/website" target="_blank"><img src="https://opencollective.com/readline/backer/21/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/22/website" target="_blank"><img src="https://opencollective.com/readline/backer/22/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/23/website" target="_blank"><img src="https://opencollective.com/readline/backer/23/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/24/website" target="_blank"><img src="https://opencollective.com/readline/backer/24/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/25/website" target="_blank"><img src="https://opencollective.com/readline/backer/25/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/26/website" target="_blank"><img src="https://opencollective.com/readline/backer/26/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/27/website" target="_blank"><img src="https://opencollective.com/readline/backer/27/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/28/website" target="_blank"><img src="https://opencollective.com/readline/backer/28/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/backer/29/website" target="_blank"><img src="https://opencollective.com/readline/backer/29/avatar.svg"></a>
|
||||
|
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## Sponsors
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Become a sponsor and get your logo here on our Github page. [[Become a sponsor](https://opencollective.com/readline#sponsor)]
|
||||
|
||||
<a href="https://opencollective.com/readline/sponsor/0/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/0/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/1/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/1/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/2/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/2/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/3/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/3/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/4/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/4/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/5/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/5/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/6/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/6/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/7/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/7/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/8/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/8/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/9/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/9/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/10/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/10/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/11/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/11/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/12/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/12/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/13/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/13/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/14/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/14/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/15/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/15/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/16/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/16/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/17/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/17/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/18/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/18/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/19/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/19/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/20/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/20/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/21/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/21/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/22/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/22/avatar.svg"></a>
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||||
<a href="https://opencollective.com/readline/sponsor/23/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/23/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/24/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/24/avatar.svg"></a>
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||||
<a href="https://opencollective.com/readline/sponsor/25/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/25/avatar.svg"></a>
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<a href="https://opencollective.com/readline/sponsor/26/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/26/avatar.svg"></a>
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||||
<a href="https://opencollective.com/readline/sponsor/27/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/27/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/28/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/28/avatar.svg"></a>
|
||||
<a href="https://opencollective.com/readline/sponsor/29/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/29/avatar.svg"></a>
|
||||
|
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@ -0,0 +1,246 @@
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// +build windows
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package readline
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import (
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"bufio"
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"io"
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"strconv"
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"strings"
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"sync"
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"unicode/utf8"
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"unsafe"
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)
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const (
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_ = uint16(0)
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COLOR_FBLUE = 0x0001
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COLOR_FGREEN = 0x0002
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COLOR_FRED = 0x0004
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COLOR_FINTENSITY = 0x0008
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COLOR_BBLUE = 0x0010
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COLOR_BGREEN = 0x0020
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COLOR_BRED = 0x0040
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COLOR_BINTENSITY = 0x0080
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COMMON_LVB_UNDERSCORE = 0x8000
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)
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var ColorTableFg = []word{
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0, // 30: Black
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COLOR_FRED, // 31: Red
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COLOR_FGREEN, // 32: Green
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COLOR_FRED | COLOR_FGREEN, // 33: Yellow
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COLOR_FBLUE, // 34: Blue
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COLOR_FRED | COLOR_FBLUE, // 35: Magenta
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COLOR_FGREEN | COLOR_FBLUE, // 36: Cyan
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COLOR_FRED | COLOR_FBLUE | COLOR_FGREEN, // 37: White
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}
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var ColorTableBg = []word{
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0, // 40: Black
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COLOR_BRED, // 41: Red
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COLOR_BGREEN, // 42: Green
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COLOR_BRED | COLOR_BGREEN, // 43: Yellow
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COLOR_BBLUE, // 44: Blue
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COLOR_BRED | COLOR_BBLUE, // 45: Magenta
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COLOR_BGREEN | COLOR_BBLUE, // 46: Cyan
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COLOR_BRED | COLOR_BBLUE | COLOR_BGREEN, // 47: White
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}
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type ANSIWriter struct {
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target io.Writer
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wg sync.WaitGroup
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ctx *ANSIWriterCtx
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sync.Mutex
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}
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func NewANSIWriter(w io.Writer) *ANSIWriter {
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a := &ANSIWriter{
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target: w,
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ctx: NewANSIWriterCtx(w),
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}
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return a
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}
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func (a *ANSIWriter) Close() error {
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a.wg.Wait()
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return nil
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}
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type ANSIWriterCtx struct {
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isEsc bool
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isEscSeq bool
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arg []string
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target *bufio.Writer
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wantFlush bool
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}
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func NewANSIWriterCtx(target io.Writer) *ANSIWriterCtx {
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return &ANSIWriterCtx{
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target: bufio.NewWriter(target),
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}
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}
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func (a *ANSIWriterCtx) Flush() {
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a.target.Flush()
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}
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func (a *ANSIWriterCtx) process(r rune) bool {
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if a.wantFlush {
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if r == 0 || r == CharEsc {
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a.wantFlush = false
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a.target.Flush()
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}
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}
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if a.isEscSeq {
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a.isEscSeq = a.ioloopEscSeq(a.target, r, &a.arg)
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return true
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}
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switch r {
|
||||
case CharEsc:
|
||||
a.isEsc = true
|
||||
case '[':
|
||||
if a.isEsc {
|
||||
a.arg = nil
|
||||
a.isEscSeq = true
|
||||
a.isEsc = false
|
||||
break
|
||||
}
|
||||
fallthrough
|
||||
default:
|
||||
a.target.WriteRune(r)
|
||||
a.wantFlush = true
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func (a *ANSIWriterCtx) ioloopEscSeq(w *bufio.Writer, r rune, argptr *[]string) bool {
|
||||
arg := *argptr
|
||||
var err error
|
||||
|
||||
if r >= 'A' && r <= 'D' {
|
||||
count := short(GetInt(arg, 1))
|
||||
info, err := GetConsoleScreenBufferInfo()
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
switch r {
|
||||
case 'A': // up
|
||||
info.dwCursorPosition.y -= count
|
||||
case 'B': // down
|
||||
info.dwCursorPosition.y += count
|
||||
case 'C': // right
|
||||
info.dwCursorPosition.x += count
|
||||
case 'D': // left
|
||||
info.dwCursorPosition.x -= count
|
||||
}
|
||||
SetConsoleCursorPosition(&info.dwCursorPosition)
|
||||
return false
|
||||
}
|
||||
|
||||
switch r {
|
||||
case 'J':
|
||||
killLines()
|
||||
case 'K':
|
||||
eraseLine()
|
||||
case 'm':
|
||||
color := word(0)
|
||||
for _, item := range arg {
|
||||
var c int
|
||||
c, err = strconv.Atoi(item)
|
||||
if err != nil {
|
||||
w.WriteString("[" + strings.Join(arg, ";") + "m")
|
||||
break
|
||||
}
|
||||
if c >= 30 && c < 40 {
|
||||
color ^= COLOR_FINTENSITY
|
||||
color |= ColorTableFg[c-30]
|
||||
} else if c >= 40 && c < 50 {
|
||||
color ^= COLOR_BINTENSITY
|
||||
color |= ColorTableBg[c-40]
|
||||
} else if c == 4 {
|
||||
color |= COMMON_LVB_UNDERSCORE | ColorTableFg[7]
|
||||
} else { // unknown code treat as reset
|
||||
color = ColorTableFg[7]
|
||||
}
|
||||
}
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
kernel.SetConsoleTextAttribute(stdout, uintptr(color))
|
||||
case '\007': // set title
|
||||
case ';':
|
||||
if len(arg) == 0 || arg[len(arg)-1] != "" {
|
||||
arg = append(arg, "")
|
||||
*argptr = arg
|
||||
}
|
||||
return true
|
||||
default:
|
||||
if len(arg) == 0 {
|
||||
arg = append(arg, "")
|
||||
}
|
||||
arg[len(arg)-1] += string(r)
|
||||
*argptr = arg
|
||||
return true
|
||||
}
|
||||
*argptr = nil
|
||||
return false
|
||||
}
|
||||
|
||||
func (a *ANSIWriter) Write(b []byte) (int, error) {
|
||||
a.Lock()
|
||||
defer a.Unlock()
|
||||
|
||||
off := 0
|
||||
for len(b) > off {
|
||||
r, size := utf8.DecodeRune(b[off:])
|
||||
if size == 0 {
|
||||
return off, io.ErrShortWrite
|
||||
}
|
||||
off += size
|
||||
a.ctx.process(r)
|
||||
}
|
||||
a.ctx.Flush()
|
||||
return off, nil
|
||||
}
|
||||
|
||||
func killLines() error {
|
||||
sbi, err := GetConsoleScreenBufferInfo()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
size := (sbi.dwCursorPosition.y - sbi.dwSize.y) * sbi.dwSize.x
|
||||
size += sbi.dwCursorPosition.x
|
||||
|
||||
var written int
|
||||
kernel.FillConsoleOutputAttribute(stdout, uintptr(ColorTableFg[7]),
|
||||
uintptr(size),
|
||||
sbi.dwCursorPosition.ptr(),
|
||||
uintptr(unsafe.Pointer(&written)),
|
||||
)
|
||||
return kernel.FillConsoleOutputCharacterW(stdout, uintptr(' '),
|
||||
uintptr(size),
|
||||
sbi.dwCursorPosition.ptr(),
|
||||
uintptr(unsafe.Pointer(&written)),
|
||||
)
|
||||
}
|
||||
|
||||
func eraseLine() error {
|
||||
sbi, err := GetConsoleScreenBufferInfo()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
size := sbi.dwSize.x
|
||||
sbi.dwCursorPosition.x = 0
|
||||
var written int
|
||||
return kernel.FillConsoleOutputCharacterW(stdout, uintptr(' '),
|
||||
uintptr(size),
|
||||
sbi.dwCursorPosition.ptr(),
|
||||
uintptr(unsafe.Pointer(&written)),
|
||||
)
|
||||
}
|
||||
|
|
@ -0,0 +1,283 @@
|
|||
package readline
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
)
|
||||
|
||||
type AutoCompleter interface {
|
||||
// Readline will pass the whole line and current offset to it
|
||||
// Completer need to pass all the candidates, and how long they shared the same characters in line
|
||||
// Example:
|
||||
// [go, git, git-shell, grep]
|
||||
// Do("g", 1) => ["o", "it", "it-shell", "rep"], 1
|
||||
// Do("gi", 2) => ["t", "t-shell"], 2
|
||||
// Do("git", 3) => ["", "-shell"], 3
|
||||
Do(line []rune, pos int) (newLine [][]rune, length int)
|
||||
}
|
||||
|
||||
type TabCompleter struct{}
|
||||
|
||||
func (t *TabCompleter) Do([]rune, int) ([][]rune, int) {
|
||||
return [][]rune{[]rune("\t")}, 0
|
||||
}
|
||||
|
||||
type opCompleter struct {
|
||||
w io.Writer
|
||||
op *Operation
|
||||
width int
|
||||
|
||||
inCompleteMode bool
|
||||
inSelectMode bool
|
||||
candidate [][]rune
|
||||
candidateSource []rune
|
||||
candidateOff int
|
||||
candidateChoise int
|
||||
candidateColNum int
|
||||
}
|
||||
|
||||
func newOpCompleter(w io.Writer, op *Operation, width int) *opCompleter {
|
||||
return &opCompleter{
|
||||
w: w,
|
||||
op: op,
|
||||
width: width,
|
||||
}
|
||||
}
|
||||
|
||||
func (o *opCompleter) doSelect() {
|
||||
if len(o.candidate) == 1 {
|
||||
o.op.buf.WriteRunes(o.candidate[0])
|
||||
o.ExitCompleteMode(false)
|
||||
return
|
||||
}
|
||||
o.nextCandidate(1)
|
||||
o.CompleteRefresh()
|
||||
}
|
||||
|
||||
func (o *opCompleter) nextCandidate(i int) {
|
||||
o.candidateChoise += i
|
||||
o.candidateChoise = o.candidateChoise % len(o.candidate)
|
||||
if o.candidateChoise < 0 {
|
||||
o.candidateChoise = len(o.candidate) + o.candidateChoise
|
||||
}
|
||||
}
|
||||
|
||||
func (o *opCompleter) OnComplete() bool {
|
||||
if o.width == 0 {
|
||||
return false
|
||||
}
|
||||
if o.IsInCompleteSelectMode() {
|
||||
o.doSelect()
|
||||
return true
|
||||
}
|
||||
|
||||
buf := o.op.buf
|
||||
rs := buf.Runes()
|
||||
|
||||
if o.IsInCompleteMode() && o.candidateSource != nil && runes.Equal(rs, o.candidateSource) {
|
||||
o.EnterCompleteSelectMode()
|
||||
o.doSelect()
|
||||
return true
|
||||
}
|
||||
|
||||
o.ExitCompleteSelectMode()
|
||||
o.candidateSource = rs
|
||||
newLines, offset := o.op.cfg.AutoComplete.Do(rs, buf.idx)
|
||||
if len(newLines) == 0 {
|
||||
o.ExitCompleteMode(false)
|
||||
return true
|
||||
}
|
||||
|
||||
// only Aggregate candidates in non-complete mode
|
||||
if !o.IsInCompleteMode() {
|
||||
if len(newLines) == 1 {
|
||||
buf.WriteRunes(newLines[0])
|
||||
o.ExitCompleteMode(false)
|
||||
return true
|
||||
}
|
||||
|
||||
same, size := runes.Aggregate(newLines)
|
||||
if size > 0 {
|
||||
buf.WriteRunes(same)
|
||||
o.ExitCompleteMode(false)
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
o.EnterCompleteMode(offset, newLines)
|
||||
return true
|
||||
}
|
||||
|
||||
func (o *opCompleter) IsInCompleteSelectMode() bool {
|
||||
return o.inSelectMode
|
||||
}
|
||||
|
||||
func (o *opCompleter) IsInCompleteMode() bool {
|
||||
return o.inCompleteMode
|
||||
}
|
||||
|
||||
func (o *opCompleter) HandleCompleteSelect(r rune) bool {
|
||||
next := true
|
||||
switch r {
|
||||
case CharEnter, CharCtrlJ:
|
||||
next = false
|
||||
o.op.buf.WriteRunes(o.op.candidate[o.op.candidateChoise])
|
||||
o.ExitCompleteMode(false)
|
||||
case CharLineStart:
|
||||
num := o.candidateChoise % o.candidateColNum
|
||||
o.nextCandidate(-num)
|
||||
case CharLineEnd:
|
||||
num := o.candidateColNum - o.candidateChoise%o.candidateColNum - 1
|
||||
o.candidateChoise += num
|
||||
if o.candidateChoise >= len(o.candidate) {
|
||||
o.candidateChoise = len(o.candidate) - 1
|
||||
}
|
||||
case CharBackspace:
|
||||
o.ExitCompleteSelectMode()
|
||||
next = false
|
||||
case CharTab, CharForward:
|
||||
o.doSelect()
|
||||
case CharBell, CharInterrupt:
|
||||
o.ExitCompleteMode(true)
|
||||
next = false
|
||||
case CharNext:
|
||||
tmpChoise := o.candidateChoise + o.candidateColNum
|
||||
if tmpChoise >= o.getMatrixSize() {
|
||||
tmpChoise -= o.getMatrixSize()
|
||||
} else if tmpChoise >= len(o.candidate) {
|
||||
tmpChoise += o.candidateColNum
|
||||
tmpChoise -= o.getMatrixSize()
|
||||
}
|
||||
o.candidateChoise = tmpChoise
|
||||
case CharBackward:
|
||||
o.nextCandidate(-1)
|
||||
case CharPrev:
|
||||
tmpChoise := o.candidateChoise - o.candidateColNum
|
||||
if tmpChoise < 0 {
|
||||
tmpChoise += o.getMatrixSize()
|
||||
if tmpChoise >= len(o.candidate) {
|
||||
tmpChoise -= o.candidateColNum
|
||||
}
|
||||
}
|
||||
o.candidateChoise = tmpChoise
|
||||
default:
|
||||
next = false
|
||||
o.ExitCompleteSelectMode()
|
||||
}
|
||||
if next {
|
||||
o.CompleteRefresh()
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func (o *opCompleter) getMatrixSize() int {
|
||||
line := len(o.candidate) / o.candidateColNum
|
||||
if len(o.candidate)%o.candidateColNum != 0 {
|
||||
line++
|
||||
}
|
||||
return line * o.candidateColNum
|
||||
}
|
||||
|
||||
func (o *opCompleter) OnWidthChange(newWidth int) {
|
||||
o.width = newWidth
|
||||
}
|
||||
|
||||
func (o *opCompleter) CompleteRefresh() {
|
||||
if !o.inCompleteMode {
|
||||
return
|
||||
}
|
||||
lineCnt := o.op.buf.CursorLineCount()
|
||||
colWidth := 0
|
||||
for _, c := range o.candidate {
|
||||
w := runes.WidthAll(c)
|
||||
if w > colWidth {
|
||||
colWidth = w
|
||||
}
|
||||
}
|
||||
colWidth += o.candidateOff + 1
|
||||
same := o.op.buf.RuneSlice(-o.candidateOff)
|
||||
|
||||
// -1 to avoid reach the end of line
|
||||
width := o.width - 1
|
||||
colNum := width / colWidth
|
||||
colWidth += (width - (colWidth * colNum)) / colNum
|
||||
|
||||
o.candidateColNum = colNum
|
||||
buf := bufio.NewWriter(o.w)
|
||||
buf.Write(bytes.Repeat([]byte("\n"), lineCnt))
|
||||
|
||||
colIdx := 0
|
||||
lines := 1
|
||||
buf.WriteString("\033[J")
|
||||
for idx, c := range o.candidate {
|
||||
inSelect := idx == o.candidateChoise && o.IsInCompleteSelectMode()
|
||||
if inSelect {
|
||||
buf.WriteString("\033[30;47m")
|
||||
}
|
||||
buf.WriteString(string(same))
|
||||
buf.WriteString(string(c))
|
||||
buf.Write(bytes.Repeat([]byte(" "), colWidth-len(c)-len(same)))
|
||||
|
||||
if inSelect {
|
||||
buf.WriteString("\033[0m")
|
||||
}
|
||||
|
||||
colIdx++
|
||||
if colIdx == colNum {
|
||||
buf.WriteString("\n")
|
||||
lines++
|
||||
colIdx = 0
|
||||
}
|
||||
}
|
||||
|
||||
// move back
|
||||
fmt.Fprintf(buf, "\033[%dA\r", lineCnt-1+lines)
|
||||
fmt.Fprintf(buf, "\033[%dC", o.op.buf.idx+o.op.buf.PromptLen())
|
||||
buf.Flush()
|
||||
}
|
||||
|
||||
func (o *opCompleter) aggCandidate(candidate [][]rune) int {
|
||||
offset := 0
|
||||
for i := 0; i < len(candidate[0]); i++ {
|
||||
for j := 0; j < len(candidate)-1; j++ {
|
||||
if i > len(candidate[j]) {
|
||||
goto aggregate
|
||||
}
|
||||
if candidate[j][i] != candidate[j+1][i] {
|
||||
goto aggregate
|
||||
}
|
||||
}
|
||||
offset = i
|
||||
}
|
||||
aggregate:
|
||||
return offset
|
||||
}
|
||||
|
||||
func (o *opCompleter) EnterCompleteSelectMode() {
|
||||
o.inSelectMode = true
|
||||
o.candidateChoise = -1
|
||||
o.CompleteRefresh()
|
||||
}
|
||||
|
||||
func (o *opCompleter) EnterCompleteMode(offset int, candidate [][]rune) {
|
||||
o.inCompleteMode = true
|
||||
o.candidate = candidate
|
||||
o.candidateOff = offset
|
||||
o.CompleteRefresh()
|
||||
}
|
||||
|
||||
func (o *opCompleter) ExitCompleteSelectMode() {
|
||||
o.inSelectMode = false
|
||||
o.candidate = nil
|
||||
o.candidateChoise = -1
|
||||
o.candidateOff = -1
|
||||
o.candidateSource = nil
|
||||
}
|
||||
|
||||
func (o *opCompleter) ExitCompleteMode(revent bool) {
|
||||
o.inCompleteMode = false
|
||||
o.ExitCompleteSelectMode()
|
||||
}
|
||||
|
|
@ -0,0 +1,165 @@
|
|||
package readline
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Caller type for dynamic completion
|
||||
type DynamicCompleteFunc func(string) []string
|
||||
|
||||
type PrefixCompleterInterface interface {
|
||||
Print(prefix string, level int, buf *bytes.Buffer)
|
||||
Do(line []rune, pos int) (newLine [][]rune, length int)
|
||||
GetName() []rune
|
||||
GetChildren() []PrefixCompleterInterface
|
||||
SetChildren(children []PrefixCompleterInterface)
|
||||
}
|
||||
|
||||
type DynamicPrefixCompleterInterface interface {
|
||||
PrefixCompleterInterface
|
||||
IsDynamic() bool
|
||||
GetDynamicNames(line []rune) [][]rune
|
||||
}
|
||||
|
||||
type PrefixCompleter struct {
|
||||
Name []rune
|
||||
Dynamic bool
|
||||
Callback DynamicCompleteFunc
|
||||
Children []PrefixCompleterInterface
|
||||
}
|
||||
|
||||
func (p *PrefixCompleter) Tree(prefix string) string {
|
||||
buf := bytes.NewBuffer(nil)
|
||||
p.Print(prefix, 0, buf)
|
||||
return buf.String()
|
||||
}
|
||||
|
||||
func Print(p PrefixCompleterInterface, prefix string, level int, buf *bytes.Buffer) {
|
||||
if strings.TrimSpace(string(p.GetName())) != "" {
|
||||
buf.WriteString(prefix)
|
||||
if level > 0 {
|
||||
buf.WriteString("├")
|
||||
buf.WriteString(strings.Repeat("─", (level*4)-2))
|
||||
buf.WriteString(" ")
|
||||
}
|
||||
buf.WriteString(string(p.GetName()) + "\n")
|
||||
level++
|
||||
}
|
||||
for _, ch := range p.GetChildren() {
|
||||
ch.Print(prefix, level, buf)
|
||||
}
|
||||
}
|
||||
|
||||
func (p *PrefixCompleter) Print(prefix string, level int, buf *bytes.Buffer) {
|
||||
Print(p, prefix, level, buf)
|
||||
}
|
||||
|
||||
func (p *PrefixCompleter) IsDynamic() bool {
|
||||
return p.Dynamic
|
||||
}
|
||||
|
||||
func (p *PrefixCompleter) GetName() []rune {
|
||||
return p.Name
|
||||
}
|
||||
|
||||
func (p *PrefixCompleter) GetDynamicNames(line []rune) [][]rune {
|
||||
var names = [][]rune{}
|
||||
for _, name := range p.Callback(string(line)) {
|
||||
names = append(names, []rune(name+" "))
|
||||
}
|
||||
return names
|
||||
}
|
||||
|
||||
func (p *PrefixCompleter) GetChildren() []PrefixCompleterInterface {
|
||||
return p.Children
|
||||
}
|
||||
|
||||
func (p *PrefixCompleter) SetChildren(children []PrefixCompleterInterface) {
|
||||
p.Children = children
|
||||
}
|
||||
|
||||
func NewPrefixCompleter(pc ...PrefixCompleterInterface) *PrefixCompleter {
|
||||
return PcItem("", pc...)
|
||||
}
|
||||
|
||||
func PcItem(name string, pc ...PrefixCompleterInterface) *PrefixCompleter {
|
||||
name += " "
|
||||
return &PrefixCompleter{
|
||||
Name: []rune(name),
|
||||
Dynamic: false,
|
||||
Children: pc,
|
||||
}
|
||||
}
|
||||
|
||||
func PcItemDynamic(callback DynamicCompleteFunc, pc ...PrefixCompleterInterface) *PrefixCompleter {
|
||||
return &PrefixCompleter{
|
||||
Callback: callback,
|
||||
Dynamic: true,
|
||||
Children: pc,
|
||||
}
|
||||
}
|
||||
|
||||
func (p *PrefixCompleter) Do(line []rune, pos int) (newLine [][]rune, offset int) {
|
||||
return doInternal(p, line, pos, line)
|
||||
}
|
||||
|
||||
func Do(p PrefixCompleterInterface, line []rune, pos int) (newLine [][]rune, offset int) {
|
||||
return doInternal(p, line, pos, line)
|
||||
}
|
||||
|
||||
func doInternal(p PrefixCompleterInterface, line []rune, pos int, origLine []rune) (newLine [][]rune, offset int) {
|
||||
line = runes.TrimSpaceLeft(line[:pos])
|
||||
goNext := false
|
||||
var lineCompleter PrefixCompleterInterface
|
||||
for _, child := range p.GetChildren() {
|
||||
childNames := make([][]rune, 1)
|
||||
|
||||
childDynamic, ok := child.(DynamicPrefixCompleterInterface)
|
||||
if ok && childDynamic.IsDynamic() {
|
||||
childNames = childDynamic.GetDynamicNames(origLine)
|
||||
} else {
|
||||
childNames[0] = child.GetName()
|
||||
}
|
||||
|
||||
for _, childName := range childNames {
|
||||
if len(line) >= len(childName) {
|
||||
if runes.HasPrefix(line, childName) {
|
||||
if len(line) == len(childName) {
|
||||
newLine = append(newLine, []rune{' '})
|
||||
} else {
|
||||
newLine = append(newLine, childName)
|
||||
}
|
||||
offset = len(childName)
|
||||
lineCompleter = child
|
||||
goNext = true
|
||||
}
|
||||
} else {
|
||||
if runes.HasPrefix(childName, line) {
|
||||
newLine = append(newLine, childName[len(line):])
|
||||
offset = len(line)
|
||||
lineCompleter = child
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if len(newLine) != 1 {
|
||||
return
|
||||
}
|
||||
|
||||
tmpLine := make([]rune, 0, len(line))
|
||||
for i := offset; i < len(line); i++ {
|
||||
if line[i] == ' ' {
|
||||
continue
|
||||
}
|
||||
|
||||
tmpLine = append(tmpLine, line[i:]...)
|
||||
return doInternal(lineCompleter, tmpLine, len(tmpLine), origLine)
|
||||
}
|
||||
|
||||
if goNext {
|
||||
return doInternal(lineCompleter, nil, 0, origLine)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
|
@ -0,0 +1,82 @@
|
|||
package readline
|
||||
|
||||
type SegmentCompleter interface {
|
||||
// a
|
||||
// |- a1
|
||||
// |--- a11
|
||||
// |- a2
|
||||
// b
|
||||
// input:
|
||||
// DoTree([], 0) [a, b]
|
||||
// DoTree([a], 1) [a]
|
||||
// DoTree([a, ], 0) [a1, a2]
|
||||
// DoTree([a, a], 1) [a1, a2]
|
||||
// DoTree([a, a1], 2) [a1]
|
||||
// DoTree([a, a1, ], 0) [a11]
|
||||
// DoTree([a, a1, a], 1) [a11]
|
||||
DoSegment([][]rune, int) [][]rune
|
||||
}
|
||||
|
||||
type dumpSegmentCompleter struct {
|
||||
f func([][]rune, int) [][]rune
|
||||
}
|
||||
|
||||
func (d *dumpSegmentCompleter) DoSegment(segment [][]rune, n int) [][]rune {
|
||||
return d.f(segment, n)
|
||||
}
|
||||
|
||||
func SegmentFunc(f func([][]rune, int) [][]rune) AutoCompleter {
|
||||
return &SegmentComplete{&dumpSegmentCompleter{f}}
|
||||
}
|
||||
|
||||
func SegmentAutoComplete(completer SegmentCompleter) *SegmentComplete {
|
||||
return &SegmentComplete{
|
||||
SegmentCompleter: completer,
|
||||
}
|
||||
}
|
||||
|
||||
type SegmentComplete struct {
|
||||
SegmentCompleter
|
||||
}
|
||||
|
||||
func RetSegment(segments [][]rune, cands [][]rune, idx int) ([][]rune, int) {
|
||||
ret := make([][]rune, 0, len(cands))
|
||||
lastSegment := segments[len(segments)-1]
|
||||
for _, cand := range cands {
|
||||
if !runes.HasPrefix(cand, lastSegment) {
|
||||
continue
|
||||
}
|
||||
ret = append(ret, cand[len(lastSegment):])
|
||||
}
|
||||
return ret, idx
|
||||
}
|
||||
|
||||
func SplitSegment(line []rune, pos int) ([][]rune, int) {
|
||||
segs := [][]rune{}
|
||||
lastIdx := -1
|
||||
line = line[:pos]
|
||||
pos = 0
|
||||
for idx, l := range line {
|
||||
if l == ' ' {
|
||||
pos = 0
|
||||
segs = append(segs, line[lastIdx+1:idx])
|
||||
lastIdx = idx
|
||||
} else {
|
||||
pos++
|
||||
}
|
||||
}
|
||||
segs = append(segs, line[lastIdx+1:])
|
||||
return segs, pos
|
||||
}
|
||||
|
||||
func (c *SegmentComplete) Do(line []rune, pos int) (newLine [][]rune, offset int) {
|
||||
|
||||
segment, idx := SplitSegment(line, pos)
|
||||
|
||||
cands := c.DoSegment(segment, idx)
|
||||
newLine, offset = RetSegment(segment, cands, idx)
|
||||
for idx := range newLine {
|
||||
newLine[idx] = append(newLine[idx], ' ')
|
||||
}
|
||||
return newLine, offset
|
||||
}
|
||||
|
|
@ -0,0 +1,312 @@
|
|||
package readline
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"container/list"
|
||||
"fmt"
|
||||
"os"
|
||||
"strings"
|
||||
"sync"
|
||||
)
|
||||
|
||||
type hisItem struct {
|
||||
Source []rune
|
||||
Version int64
|
||||
Tmp []rune
|
||||
}
|
||||
|
||||
func (h *hisItem) Clean() {
|
||||
h.Source = nil
|
||||
h.Tmp = nil
|
||||
}
|
||||
|
||||
type opHistory struct {
|
||||
cfg *Config
|
||||
history *list.List
|
||||
historyVer int64
|
||||
current *list.Element
|
||||
fd *os.File
|
||||
fdLock sync.Mutex
|
||||
}
|
||||
|
||||
func newOpHistory(cfg *Config) (o *opHistory) {
|
||||
o = &opHistory{
|
||||
cfg: cfg,
|
||||
history: list.New(),
|
||||
}
|
||||
return o
|
||||
}
|
||||
|
||||
func (o *opHistory) Reset() {
|
||||
o.history = list.New()
|
||||
o.current = nil
|
||||
}
|
||||
|
||||
func (o *opHistory) IsHistoryClosed() bool {
|
||||
o.fdLock.Lock()
|
||||
defer o.fdLock.Unlock()
|
||||
return o.fd.Fd() == ^(uintptr(0))
|
||||
}
|
||||
|
||||
func (o *opHistory) Init() {
|
||||
if o.IsHistoryClosed() {
|
||||
o.initHistory()
|
||||
}
|
||||
}
|
||||
|
||||
func (o *opHistory) initHistory() {
|
||||
if o.cfg.HistoryFile != "" {
|
||||
o.historyUpdatePath(o.cfg.HistoryFile)
|
||||
}
|
||||
}
|
||||
|
||||
// only called by newOpHistory
|
||||
func (o *opHistory) historyUpdatePath(path string) {
|
||||
o.fdLock.Lock()
|
||||
defer o.fdLock.Unlock()
|
||||
f, err := os.OpenFile(path, os.O_APPEND|os.O_CREATE|os.O_RDWR, 0666)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
o.fd = f
|
||||
r := bufio.NewReader(o.fd)
|
||||
total := 0
|
||||
for ; ; total++ {
|
||||
line, err := r.ReadString('\n')
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
// ignore the empty line
|
||||
line = strings.TrimSpace(line)
|
||||
if len(line) == 0 {
|
||||
continue
|
||||
}
|
||||
o.Push([]rune(line))
|
||||
o.Compact()
|
||||
}
|
||||
if total > o.cfg.HistoryLimit {
|
||||
o.rewriteLocked()
|
||||
}
|
||||
o.historyVer++
|
||||
o.Push(nil)
|
||||
return
|
||||
}
|
||||
|
||||
func (o *opHistory) Compact() {
|
||||
for o.history.Len() > o.cfg.HistoryLimit && o.history.Len() > 0 {
|
||||
o.history.Remove(o.history.Front())
|
||||
}
|
||||
}
|
||||
|
||||
func (o *opHistory) Rewrite() {
|
||||
o.fdLock.Lock()
|
||||
defer o.fdLock.Unlock()
|
||||
o.rewriteLocked()
|
||||
}
|
||||
|
||||
func (o *opHistory) rewriteLocked() {
|
||||
if o.cfg.HistoryFile == "" {
|
||||
return
|
||||
}
|
||||
|
||||
tmpFile := o.cfg.HistoryFile + ".tmp"
|
||||
fd, err := os.OpenFile(tmpFile, os.O_CREATE|os.O_WRONLY|os.O_TRUNC|os.O_APPEND, 0666)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
buf := bufio.NewWriter(fd)
|
||||
for elem := o.history.Front(); elem != nil; elem = elem.Next() {
|
||||
buf.WriteString(string(elem.Value.(*hisItem).Source))
|
||||
}
|
||||
buf.Flush()
|
||||
|
||||
// replace history file
|
||||
if err = os.Rename(tmpFile, o.cfg.HistoryFile); err != nil {
|
||||
fd.Close()
|
||||
return
|
||||
}
|
||||
|
||||
if o.fd != nil {
|
||||
o.fd.Close()
|
||||
}
|
||||
// fd is write only, just satisfy what we need.
|
||||
o.fd = fd
|
||||
}
|
||||
|
||||
func (o *opHistory) Close() {
|
||||
o.fdLock.Lock()
|
||||
defer o.fdLock.Unlock()
|
||||
if o.fd != nil {
|
||||
o.fd.Close()
|
||||
}
|
||||
}
|
||||
|
||||
func (o *opHistory) FindBck(isNewSearch bool, rs []rune, start int) (int, *list.Element) {
|
||||
for elem := o.current; elem != nil; elem = elem.Prev() {
|
||||
item := o.showItem(elem.Value)
|
||||
if isNewSearch {
|
||||
start += len(rs)
|
||||
}
|
||||
if elem == o.current {
|
||||
if len(item) >= start {
|
||||
item = item[:start]
|
||||
}
|
||||
}
|
||||
idx := runes.IndexAllBckEx(item, rs, o.cfg.HistorySearchFold)
|
||||
if idx < 0 {
|
||||
continue
|
||||
}
|
||||
return idx, elem
|
||||
}
|
||||
return -1, nil
|
||||
}
|
||||
|
||||
func (o *opHistory) FindFwd(isNewSearch bool, rs []rune, start int) (int, *list.Element) {
|
||||
for elem := o.current; elem != nil; elem = elem.Next() {
|
||||
item := o.showItem(elem.Value)
|
||||
if isNewSearch {
|
||||
start -= len(rs)
|
||||
if start < 0 {
|
||||
start = 0
|
||||
}
|
||||
}
|
||||
if elem == o.current {
|
||||
if len(item)-1 >= start {
|
||||
item = item[start:]
|
||||
} else {
|
||||
continue
|
||||
}
|
||||
}
|
||||
idx := runes.IndexAllEx(item, rs, o.cfg.HistorySearchFold)
|
||||
if idx < 0 {
|
||||
continue
|
||||
}
|
||||
if elem == o.current {
|
||||
idx += start
|
||||
}
|
||||
return idx, elem
|
||||
}
|
||||
return -1, nil
|
||||
}
|
||||
|
||||
func (o *opHistory) showItem(obj interface{}) []rune {
|
||||
item := obj.(*hisItem)
|
||||
if item.Version == o.historyVer {
|
||||
return item.Tmp
|
||||
}
|
||||
return item.Source
|
||||
}
|
||||
|
||||
func (o *opHistory) Prev() []rune {
|
||||
if o.current == nil {
|
||||
return nil
|
||||
}
|
||||
current := o.current.Prev()
|
||||
if current == nil {
|
||||
return nil
|
||||
}
|
||||
o.current = current
|
||||
return runes.Copy(o.showItem(current.Value))
|
||||
}
|
||||
|
||||
func (o *opHistory) Next() ([]rune, bool) {
|
||||
if o.current == nil {
|
||||
return nil, false
|
||||
}
|
||||
current := o.current.Next()
|
||||
if current == nil {
|
||||
return nil, false
|
||||
}
|
||||
|
||||
o.current = current
|
||||
return runes.Copy(o.showItem(current.Value)), true
|
||||
}
|
||||
|
||||
func (o *opHistory) debug() {
|
||||
Debug("-------")
|
||||
for item := o.history.Front(); item != nil; item = item.Next() {
|
||||
Debug(fmt.Sprintf("%+v", item.Value))
|
||||
}
|
||||
}
|
||||
|
||||
// save history
|
||||
func (o *opHistory) New(current []rune) (err error) {
|
||||
current = runes.Copy(current)
|
||||
|
||||
// if just use last command without modify
|
||||
// just clean lastest history
|
||||
if back := o.history.Back(); back != nil {
|
||||
prev := back.Prev()
|
||||
if prev != nil {
|
||||
if runes.Equal(current, prev.Value.(*hisItem).Source) {
|
||||
o.current = o.history.Back()
|
||||
o.current.Value.(*hisItem).Clean()
|
||||
o.historyVer++
|
||||
return nil
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if len(current) == 0 {
|
||||
o.current = o.history.Back()
|
||||
if o.current != nil {
|
||||
o.current.Value.(*hisItem).Clean()
|
||||
o.historyVer++
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
if o.current != o.history.Back() {
|
||||
// move history item to current command
|
||||
currentItem := o.current.Value.(*hisItem)
|
||||
// set current to last item
|
||||
o.current = o.history.Back()
|
||||
|
||||
current = runes.Copy(currentItem.Tmp)
|
||||
}
|
||||
|
||||
// err only can be a IO error, just report
|
||||
err = o.Update(current, true)
|
||||
|
||||
// push a new one to commit current command
|
||||
o.historyVer++
|
||||
o.Push(nil)
|
||||
return
|
||||
}
|
||||
|
||||
func (o *opHistory) Revert() {
|
||||
o.historyVer++
|
||||
o.current = o.history.Back()
|
||||
}
|
||||
|
||||
func (o *opHistory) Update(s []rune, commit bool) (err error) {
|
||||
o.fdLock.Lock()
|
||||
defer o.fdLock.Unlock()
|
||||
s = runes.Copy(s)
|
||||
if o.current == nil {
|
||||
o.Push(s)
|
||||
o.Compact()
|
||||
return
|
||||
}
|
||||
r := o.current.Value.(*hisItem)
|
||||
r.Version = o.historyVer
|
||||
if commit {
|
||||
r.Source = s
|
||||
if o.fd != nil {
|
||||
// just report the error
|
||||
_, err = o.fd.Write([]byte(string(r.Source) + "\n"))
|
||||
}
|
||||
} else {
|
||||
r.Tmp = append(r.Tmp[:0], s...)
|
||||
}
|
||||
o.current.Value = r
|
||||
o.Compact()
|
||||
return
|
||||
}
|
||||
|
||||
func (o *opHistory) Push(s []rune) {
|
||||
s = runes.Copy(s)
|
||||
elem := o.history.PushBack(&hisItem{Source: s})
|
||||
o.current = elem
|
||||
}
|
||||
|
|
@ -0,0 +1,491 @@
|
|||
package readline
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"io"
|
||||
)
|
||||
|
||||
var (
|
||||
ErrInterrupt = errors.New("Interrupt")
|
||||
)
|
||||
|
||||
type InterruptError struct {
|
||||
Line []rune
|
||||
}
|
||||
|
||||
func (*InterruptError) Error() string {
|
||||
return "Interrupted"
|
||||
}
|
||||
|
||||
type Operation struct {
|
||||
cfg *Config
|
||||
t *Terminal
|
||||
buf *RuneBuffer
|
||||
outchan chan []rune
|
||||
errchan chan error
|
||||
w io.Writer
|
||||
|
||||
history *opHistory
|
||||
*opSearch
|
||||
*opCompleter
|
||||
*opPassword
|
||||
*opVim
|
||||
}
|
||||
|
||||
type wrapWriter struct {
|
||||
r *Operation
|
||||
t *Terminal
|
||||
target io.Writer
|
||||
}
|
||||
|
||||
func (w *wrapWriter) Write(b []byte) (int, error) {
|
||||
if !w.t.IsReading() {
|
||||
return w.target.Write(b)
|
||||
}
|
||||
|
||||
var (
|
||||
n int
|
||||
err error
|
||||
)
|
||||
w.r.buf.Refresh(func() {
|
||||
n, err = w.target.Write(b)
|
||||
})
|
||||
|
||||
if w.r.IsSearchMode() {
|
||||
w.r.SearchRefresh(-1)
|
||||
}
|
||||
if w.r.IsInCompleteMode() {
|
||||
w.r.CompleteRefresh()
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
|
||||
func NewOperation(t *Terminal, cfg *Config) *Operation {
|
||||
width := cfg.FuncGetWidth()
|
||||
op := &Operation{
|
||||
t: t,
|
||||
buf: NewRuneBuffer(t, cfg.Prompt, cfg, width),
|
||||
outchan: make(chan []rune),
|
||||
errchan: make(chan error),
|
||||
}
|
||||
op.w = op.buf.w
|
||||
op.SetConfig(cfg)
|
||||
op.opVim = newVimMode(op)
|
||||
op.opCompleter = newOpCompleter(op.buf.w, op, width)
|
||||
op.opPassword = newOpPassword(op)
|
||||
op.cfg.FuncOnWidthChanged(func() {
|
||||
newWidth := cfg.FuncGetWidth()
|
||||
op.opCompleter.OnWidthChange(newWidth)
|
||||
op.opSearch.OnWidthChange(newWidth)
|
||||
op.buf.OnWidthChange(newWidth)
|
||||
})
|
||||
go op.ioloop()
|
||||
return op
|
||||
}
|
||||
|
||||
func (o *Operation) SetPrompt(s string) {
|
||||
o.buf.SetPrompt(s)
|
||||
}
|
||||
|
||||
func (o *Operation) SetMaskRune(r rune) {
|
||||
o.buf.SetMask(r)
|
||||
}
|
||||
|
||||
func (o *Operation) ioloop() {
|
||||
for {
|
||||
keepInSearchMode := false
|
||||
keepInCompleteMode := false
|
||||
r := o.t.ReadRune()
|
||||
if r == 0 { // io.EOF
|
||||
if o.buf.Len() == 0 {
|
||||
o.buf.Clean()
|
||||
select {
|
||||
case o.errchan <- io.EOF:
|
||||
}
|
||||
break
|
||||
} else {
|
||||
// if stdin got io.EOF and there is something left in buffer,
|
||||
// let's flush them by sending CharEnter.
|
||||
// And we will got io.EOF int next loop.
|
||||
r = CharEnter
|
||||
}
|
||||
}
|
||||
isUpdateHistory := true
|
||||
|
||||
if o.IsInCompleteSelectMode() {
|
||||
keepInCompleteMode = o.HandleCompleteSelect(r)
|
||||
if keepInCompleteMode {
|
||||
continue
|
||||
}
|
||||
|
||||
o.buf.Refresh(nil)
|
||||
switch r {
|
||||
case CharEnter, CharCtrlJ:
|
||||
o.history.Update(o.buf.Runes(), false)
|
||||
fallthrough
|
||||
case CharInterrupt:
|
||||
o.t.KickRead()
|
||||
fallthrough
|
||||
case CharBell:
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
if o.IsEnableVimMode() {
|
||||
r = o.HandleVim(r, o.t.ReadRune)
|
||||
if r == 0 {
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
switch r {
|
||||
case CharBell:
|
||||
if o.IsSearchMode() {
|
||||
o.ExitSearchMode(true)
|
||||
o.buf.Refresh(nil)
|
||||
}
|
||||
if o.IsInCompleteMode() {
|
||||
o.ExitCompleteMode(true)
|
||||
o.buf.Refresh(nil)
|
||||
}
|
||||
case CharTab:
|
||||
if o.cfg.AutoComplete == nil {
|
||||
o.t.Bell()
|
||||
break
|
||||
}
|
||||
if o.OnComplete() {
|
||||
keepInCompleteMode = true
|
||||
} else {
|
||||
o.t.Bell()
|
||||
break
|
||||
}
|
||||
|
||||
case CharBckSearch:
|
||||
if !o.SearchMode(S_DIR_BCK) {
|
||||
o.t.Bell()
|
||||
break
|
||||
}
|
||||
keepInSearchMode = true
|
||||
case CharCtrlU:
|
||||
o.buf.KillFront()
|
||||
case CharFwdSearch:
|
||||
if !o.SearchMode(S_DIR_FWD) {
|
||||
o.t.Bell()
|
||||
break
|
||||
}
|
||||
keepInSearchMode = true
|
||||
case CharKill:
|
||||
o.buf.Kill()
|
||||
keepInCompleteMode = true
|
||||
case MetaForward:
|
||||
o.buf.MoveToNextWord()
|
||||
case CharTranspose:
|
||||
o.buf.Transpose()
|
||||
case MetaBackward:
|
||||
o.buf.MoveToPrevWord()
|
||||
case MetaDelete:
|
||||
o.buf.DeleteWord()
|
||||
case CharLineStart:
|
||||
o.buf.MoveToLineStart()
|
||||
case CharLineEnd:
|
||||
o.buf.MoveToLineEnd()
|
||||
case CharBackspace, CharCtrlH:
|
||||
if o.IsSearchMode() {
|
||||
o.SearchBackspace()
|
||||
keepInSearchMode = true
|
||||
break
|
||||
}
|
||||
|
||||
if o.buf.Len() == 0 {
|
||||
o.t.Bell()
|
||||
break
|
||||
}
|
||||
o.buf.Backspace()
|
||||
if o.IsInCompleteMode() {
|
||||
o.OnComplete()
|
||||
}
|
||||
case CharCtrlZ:
|
||||
o.buf.Clean()
|
||||
o.t.SleepToResume()
|
||||
o.Refresh()
|
||||
case CharCtrlL:
|
||||
ClearScreen(o.w)
|
||||
o.Refresh()
|
||||
case MetaBackspace, CharCtrlW:
|
||||
o.buf.BackEscapeWord()
|
||||
case CharEnter, CharCtrlJ:
|
||||
if o.IsSearchMode() {
|
||||
o.ExitSearchMode(false)
|
||||
}
|
||||
o.buf.MoveToLineEnd()
|
||||
var data []rune
|
||||
if !o.cfg.UniqueEditLine {
|
||||
o.buf.WriteRune('\n')
|
||||
data = o.buf.Reset()
|
||||
data = data[:len(data)-1] // trim \n
|
||||
} else {
|
||||
o.buf.Clean()
|
||||
data = o.buf.Reset()
|
||||
}
|
||||
o.outchan <- data
|
||||
if !o.cfg.DisableAutoSaveHistory {
|
||||
// ignore IO error
|
||||
_ = o.history.New(data)
|
||||
} else {
|
||||
isUpdateHistory = false
|
||||
}
|
||||
case CharBackward:
|
||||
o.buf.MoveBackward()
|
||||
case CharForward:
|
||||
o.buf.MoveForward()
|
||||
case CharPrev:
|
||||
buf := o.history.Prev()
|
||||
if buf != nil {
|
||||
o.buf.Set(buf)
|
||||
} else {
|
||||
o.t.Bell()
|
||||
}
|
||||
case CharNext:
|
||||
buf, ok := o.history.Next()
|
||||
if ok {
|
||||
o.buf.Set(buf)
|
||||
} else {
|
||||
o.t.Bell()
|
||||
}
|
||||
case CharDelete:
|
||||
if o.buf.Len() > 0 || !o.IsNormalMode() {
|
||||
o.t.KickRead()
|
||||
if !o.buf.Delete() {
|
||||
o.t.Bell()
|
||||
}
|
||||
break
|
||||
}
|
||||
|
||||
// treat as EOF
|
||||
if !o.cfg.UniqueEditLine {
|
||||
o.buf.WriteString(o.cfg.EOFPrompt + "\n")
|
||||
}
|
||||
o.buf.Reset()
|
||||
isUpdateHistory = false
|
||||
o.history.Revert()
|
||||
o.errchan <- io.EOF
|
||||
if o.cfg.UniqueEditLine {
|
||||
o.buf.Clean()
|
||||
}
|
||||
case CharInterrupt:
|
||||
if o.IsSearchMode() {
|
||||
o.t.KickRead()
|
||||
o.ExitSearchMode(true)
|
||||
break
|
||||
}
|
||||
if o.IsInCompleteMode() {
|
||||
o.t.KickRead()
|
||||
o.ExitCompleteMode(true)
|
||||
o.buf.Refresh(nil)
|
||||
break
|
||||
}
|
||||
o.buf.MoveToLineEnd()
|
||||
o.buf.Refresh(nil)
|
||||
hint := o.cfg.InterruptPrompt + "\n"
|
||||
if !o.cfg.UniqueEditLine {
|
||||
o.buf.WriteString(hint)
|
||||
}
|
||||
remain := o.buf.Reset()
|
||||
if !o.cfg.UniqueEditLine {
|
||||
remain = remain[:len(remain)-len([]rune(hint))]
|
||||
}
|
||||
isUpdateHistory = false
|
||||
o.history.Revert()
|
||||
o.errchan <- &InterruptError{remain}
|
||||
default:
|
||||
if o.IsSearchMode() {
|
||||
o.SearchChar(r)
|
||||
keepInSearchMode = true
|
||||
break
|
||||
}
|
||||
o.buf.WriteRune(r)
|
||||
if o.IsInCompleteMode() {
|
||||
o.OnComplete()
|
||||
keepInCompleteMode = true
|
||||
}
|
||||
}
|
||||
|
||||
if o.cfg.Listener != nil {
|
||||
newLine, newPos, ok := o.cfg.Listener.OnChange(o.buf.Runes(), o.buf.Pos(), r)
|
||||
if ok {
|
||||
o.buf.SetWithIdx(newPos, newLine)
|
||||
}
|
||||
}
|
||||
|
||||
if !keepInSearchMode && o.IsSearchMode() {
|
||||
o.ExitSearchMode(false)
|
||||
o.buf.Refresh(nil)
|
||||
} else if o.IsInCompleteMode() {
|
||||
if !keepInCompleteMode {
|
||||
o.ExitCompleteMode(false)
|
||||
o.Refresh()
|
||||
} else {
|
||||
o.buf.Refresh(nil)
|
||||
o.CompleteRefresh()
|
||||
}
|
||||
}
|
||||
if isUpdateHistory && !o.IsSearchMode() {
|
||||
// it will cause null history
|
||||
o.history.Update(o.buf.Runes(), false)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (o *Operation) Stderr() io.Writer {
|
||||
return &wrapWriter{target: o.cfg.Stderr, r: o, t: o.t}
|
||||
}
|
||||
|
||||
func (o *Operation) Stdout() io.Writer {
|
||||
return &wrapWriter{target: o.cfg.Stdout, r: o, t: o.t}
|
||||
}
|
||||
|
||||
func (o *Operation) String() (string, error) {
|
||||
r, err := o.Runes()
|
||||
return string(r), err
|
||||
}
|
||||
|
||||
func (o *Operation) Runes() ([]rune, error) {
|
||||
o.t.EnterRawMode()
|
||||
defer o.t.ExitRawMode()
|
||||
|
||||
if o.cfg.Listener != nil {
|
||||
o.cfg.Listener.OnChange(nil, 0, 0)
|
||||
}
|
||||
|
||||
o.buf.Refresh(nil) // print prompt
|
||||
o.t.KickRead()
|
||||
select {
|
||||
case r := <-o.outchan:
|
||||
return r, nil
|
||||
case err := <-o.errchan:
|
||||
if e, ok := err.(*InterruptError); ok {
|
||||
return e.Line, ErrInterrupt
|
||||
}
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
func (o *Operation) PasswordEx(prompt string, l Listener) ([]byte, error) {
|
||||
cfg := o.GenPasswordConfig()
|
||||
cfg.Prompt = prompt
|
||||
cfg.Listener = l
|
||||
return o.PasswordWithConfig(cfg)
|
||||
}
|
||||
|
||||
func (o *Operation) GenPasswordConfig() *Config {
|
||||
return o.opPassword.PasswordConfig()
|
||||
}
|
||||
|
||||
func (o *Operation) PasswordWithConfig(cfg *Config) ([]byte, error) {
|
||||
if err := o.opPassword.EnterPasswordMode(cfg); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer o.opPassword.ExitPasswordMode()
|
||||
return o.Slice()
|
||||
}
|
||||
|
||||
func (o *Operation) Password(prompt string) ([]byte, error) {
|
||||
return o.PasswordEx(prompt, nil)
|
||||
}
|
||||
|
||||
func (o *Operation) SetTitle(t string) {
|
||||
o.w.Write([]byte("\033[2;" + t + "\007"))
|
||||
}
|
||||
|
||||
func (o *Operation) Slice() ([]byte, error) {
|
||||
r, err := o.Runes()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return []byte(string(r)), nil
|
||||
}
|
||||
|
||||
func (o *Operation) Close() {
|
||||
o.history.Close()
|
||||
}
|
||||
|
||||
func (o *Operation) SetHistoryPath(path string) {
|
||||
if o.history != nil {
|
||||
o.history.Close()
|
||||
}
|
||||
o.cfg.HistoryFile = path
|
||||
o.history = newOpHistory(o.cfg)
|
||||
}
|
||||
|
||||
func (o *Operation) IsNormalMode() bool {
|
||||
return !o.IsInCompleteMode() && !o.IsSearchMode()
|
||||
}
|
||||
|
||||
func (op *Operation) SetConfig(cfg *Config) (*Config, error) {
|
||||
if op.cfg == cfg {
|
||||
return op.cfg, nil
|
||||
}
|
||||
if err := cfg.Init(); err != nil {
|
||||
return op.cfg, err
|
||||
}
|
||||
old := op.cfg
|
||||
op.cfg = cfg
|
||||
op.SetPrompt(cfg.Prompt)
|
||||
op.SetMaskRune(cfg.MaskRune)
|
||||
op.buf.SetConfig(cfg)
|
||||
width := op.cfg.FuncGetWidth()
|
||||
|
||||
if cfg.opHistory == nil {
|
||||
op.SetHistoryPath(cfg.HistoryFile)
|
||||
cfg.opHistory = op.history
|
||||
cfg.opSearch = newOpSearch(op.buf.w, op.buf, op.history, cfg, width)
|
||||
}
|
||||
op.history = cfg.opHistory
|
||||
|
||||
// SetHistoryPath will close opHistory which already exists
|
||||
// so if we use it next time, we need to reopen it by `InitHistory()`
|
||||
op.history.Init()
|
||||
|
||||
if op.cfg.AutoComplete != nil {
|
||||
op.opCompleter = newOpCompleter(op.buf.w, op, width)
|
||||
}
|
||||
|
||||
op.opSearch = cfg.opSearch
|
||||
return old, nil
|
||||
}
|
||||
|
||||
func (o *Operation) ResetHistory() {
|
||||
o.history.Reset()
|
||||
}
|
||||
|
||||
// if err is not nil, it just mean it fail to write to file
|
||||
// other things goes fine.
|
||||
func (o *Operation) SaveHistory(content string) error {
|
||||
return o.history.New([]rune(content))
|
||||
}
|
||||
|
||||
func (o *Operation) Refresh() {
|
||||
if o.t.IsReading() {
|
||||
o.buf.Refresh(nil)
|
||||
}
|
||||
}
|
||||
|
||||
func (o *Operation) Clean() {
|
||||
o.buf.Clean()
|
||||
}
|
||||
|
||||
func FuncListener(f func(line []rune, pos int, key rune) (newLine []rune, newPos int, ok bool)) Listener {
|
||||
return &DumpListener{f: f}
|
||||
}
|
||||
|
||||
type DumpListener struct {
|
||||
f func(line []rune, pos int, key rune) (newLine []rune, newPos int, ok bool)
|
||||
}
|
||||
|
||||
func (d *DumpListener) OnChange(line []rune, pos int, key rune) (newLine []rune, newPos int, ok bool) {
|
||||
return d.f(line, pos, key)
|
||||
}
|
||||
|
||||
type Listener interface {
|
||||
OnChange(line []rune, pos int, key rune) (newLine []rune, newPos int, ok bool)
|
||||
}
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
package readline
|
||||
|
||||
type opPassword struct {
|
||||
o *Operation
|
||||
backupCfg *Config
|
||||
}
|
||||
|
||||
func newOpPassword(o *Operation) *opPassword {
|
||||
return &opPassword{o: o}
|
||||
}
|
||||
|
||||
func (o *opPassword) ExitPasswordMode() {
|
||||
o.o.SetConfig(o.backupCfg)
|
||||
o.backupCfg = nil
|
||||
}
|
||||
|
||||
func (o *opPassword) EnterPasswordMode(cfg *Config) (err error) {
|
||||
o.backupCfg, err = o.o.SetConfig(cfg)
|
||||
return
|
||||
}
|
||||
|
||||
func (o *opPassword) PasswordConfig() *Config {
|
||||
return &Config{
|
||||
EnableMask: true,
|
||||
InterruptPrompt: "\n",
|
||||
EOFPrompt: "\n",
|
||||
HistoryLimit: -1,
|
||||
|
||||
Stdout: o.o.cfg.Stdout,
|
||||
Stderr: o.o.cfg.Stderr,
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,125 @@
|
|||
// +build windows
|
||||
|
||||
package readline
|
||||
|
||||
import "unsafe"
|
||||
|
||||
const (
|
||||
VK_CANCEL = 0x03
|
||||
VK_BACK = 0x08
|
||||
VK_TAB = 0x09
|
||||
VK_RETURN = 0x0D
|
||||
VK_SHIFT = 0x10
|
||||
VK_CONTROL = 0x11
|
||||
VK_MENU = 0x12
|
||||
VK_ESCAPE = 0x1B
|
||||
VK_LEFT = 0x25
|
||||
VK_UP = 0x26
|
||||
VK_RIGHT = 0x27
|
||||
VK_DOWN = 0x28
|
||||
VK_DELETE = 0x2E
|
||||
VK_LSHIFT = 0xA0
|
||||
VK_RSHIFT = 0xA1
|
||||
VK_LCONTROL = 0xA2
|
||||
VK_RCONTROL = 0xA3
|
||||
)
|
||||
|
||||
// RawReader translate input record to ANSI escape sequence.
|
||||
// To provides same behavior as unix terminal.
|
||||
type RawReader struct {
|
||||
ctrlKey bool
|
||||
altKey bool
|
||||
}
|
||||
|
||||
func NewRawReader() *RawReader {
|
||||
r := new(RawReader)
|
||||
return r
|
||||
}
|
||||
|
||||
// only process one action in one read
|
||||
func (r *RawReader) Read(buf []byte) (int, error) {
|
||||
ir := new(_INPUT_RECORD)
|
||||
var read int
|
||||
var err error
|
||||
next:
|
||||
err = kernel.ReadConsoleInputW(stdin,
|
||||
uintptr(unsafe.Pointer(ir)),
|
||||
1,
|
||||
uintptr(unsafe.Pointer(&read)),
|
||||
)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
if ir.EventType != EVENT_KEY {
|
||||
goto next
|
||||
}
|
||||
ker := (*_KEY_EVENT_RECORD)(unsafe.Pointer(&ir.Event[0]))
|
||||
if ker.bKeyDown == 0 { // keyup
|
||||
if r.ctrlKey || r.altKey {
|
||||
switch ker.wVirtualKeyCode {
|
||||
case VK_RCONTROL, VK_LCONTROL:
|
||||
r.ctrlKey = false
|
||||
case VK_MENU: //alt
|
||||
r.altKey = false
|
||||
}
|
||||
}
|
||||
goto next
|
||||
}
|
||||
|
||||
if ker.unicodeChar == 0 {
|
||||
var target rune
|
||||
switch ker.wVirtualKeyCode {
|
||||
case VK_RCONTROL, VK_LCONTROL:
|
||||
r.ctrlKey = true
|
||||
case VK_MENU: //alt
|
||||
r.altKey = true
|
||||
case VK_LEFT:
|
||||
target = CharBackward
|
||||
case VK_RIGHT:
|
||||
target = CharForward
|
||||
case VK_UP:
|
||||
target = CharPrev
|
||||
case VK_DOWN:
|
||||
target = CharNext
|
||||
}
|
||||
if target != 0 {
|
||||
return r.write(buf, target)
|
||||
}
|
||||
goto next
|
||||
}
|
||||
char := rune(ker.unicodeChar)
|
||||
if r.ctrlKey {
|
||||
switch char {
|
||||
case 'A':
|
||||
char = CharLineStart
|
||||
case 'E':
|
||||
char = CharLineEnd
|
||||
case 'R':
|
||||
char = CharBckSearch
|
||||
case 'S':
|
||||
char = CharFwdSearch
|
||||
}
|
||||
} else if r.altKey {
|
||||
switch char {
|
||||
case VK_BACK:
|
||||
char = CharBackspace
|
||||
}
|
||||
return r.writeEsc(buf, char)
|
||||
}
|
||||
return r.write(buf, char)
|
||||
}
|
||||
|
||||
func (r *RawReader) writeEsc(b []byte, char rune) (int, error) {
|
||||
b[0] = '\033'
|
||||
n := copy(b[1:], []byte(string(char)))
|
||||
return n + 1, nil
|
||||
}
|
||||
|
||||
func (r *RawReader) write(b []byte, char rune) (int, error) {
|
||||
n := copy(b, []byte(string(char)))
|
||||
return n, nil
|
||||
}
|
||||
|
||||
func (r *RawReader) Close() error {
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,279 @@
|
|||
// Readline is a pure go implementation for GNU-Readline kind library.
|
||||
//
|
||||
// example:
|
||||
// rl, err := readline.New("> ")
|
||||
// if err != nil {
|
||||
// panic(err)
|
||||
// }
|
||||
// defer rl.Close()
|
||||
//
|
||||
// for {
|
||||
// line, err := rl.Readline()
|
||||
// if err != nil { // io.EOF
|
||||
// break
|
||||
// }
|
||||
// println(line)
|
||||
// }
|
||||
//
|
||||
package readline
|
||||
|
||||
import "io"
|
||||
|
||||
type Instance struct {
|
||||
Config *Config
|
||||
Terminal *Terminal
|
||||
Operation *Operation
|
||||
}
|
||||
|
||||
type Config struct {
|
||||
// prompt supports ANSI escape sequence, so we can color some characters even in windows
|
||||
Prompt string
|
||||
|
||||
// readline will persist historys to file where HistoryFile specified
|
||||
HistoryFile string
|
||||
// specify the max length of historys, it's 500 by default, set it to -1 to disable history
|
||||
HistoryLimit int
|
||||
DisableAutoSaveHistory bool
|
||||
// enable case-insensitive history searching
|
||||
HistorySearchFold bool
|
||||
|
||||
// AutoCompleter will called once user press TAB
|
||||
AutoComplete AutoCompleter
|
||||
|
||||
// Any key press will pass to Listener
|
||||
// NOTE: Listener will be triggered by (nil, 0, 0) immediately
|
||||
Listener Listener
|
||||
|
||||
// If VimMode is true, readline will in vim.insert mode by default
|
||||
VimMode bool
|
||||
|
||||
InterruptPrompt string
|
||||
EOFPrompt string
|
||||
|
||||
FuncGetWidth func() int
|
||||
|
||||
Stdin io.Reader
|
||||
Stdout io.Writer
|
||||
Stderr io.Writer
|
||||
|
||||
EnableMask bool
|
||||
MaskRune rune
|
||||
|
||||
// erase the editing line after user submited it
|
||||
// it use in IM usually.
|
||||
UniqueEditLine bool
|
||||
|
||||
// force use interactive even stdout is not a tty
|
||||
FuncIsTerminal func() bool
|
||||
FuncMakeRaw func() error
|
||||
FuncExitRaw func() error
|
||||
FuncOnWidthChanged func(func())
|
||||
ForceUseInteractive bool
|
||||
|
||||
// private fields
|
||||
inited bool
|
||||
opHistory *opHistory
|
||||
opSearch *opSearch
|
||||
}
|
||||
|
||||
func (c *Config) useInteractive() bool {
|
||||
if c.ForceUseInteractive {
|
||||
return true
|
||||
}
|
||||
return c.FuncIsTerminal()
|
||||
}
|
||||
|
||||
func (c *Config) Init() error {
|
||||
if c.inited {
|
||||
return nil
|
||||
}
|
||||
c.inited = true
|
||||
if c.Stdin == nil {
|
||||
c.Stdin = NewCancelableStdin(Stdin)
|
||||
}
|
||||
if c.Stdout == nil {
|
||||
c.Stdout = Stdout
|
||||
}
|
||||
if c.Stderr == nil {
|
||||
c.Stderr = Stderr
|
||||
}
|
||||
if c.HistoryLimit == 0 {
|
||||
c.HistoryLimit = 500
|
||||
}
|
||||
|
||||
if c.InterruptPrompt == "" {
|
||||
c.InterruptPrompt = "^C"
|
||||
} else if c.InterruptPrompt == "\n" {
|
||||
c.InterruptPrompt = ""
|
||||
}
|
||||
if c.EOFPrompt == "" {
|
||||
c.EOFPrompt = "^D"
|
||||
} else if c.EOFPrompt == "\n" {
|
||||
c.EOFPrompt = ""
|
||||
}
|
||||
|
||||
if c.AutoComplete == nil {
|
||||
c.AutoComplete = &TabCompleter{}
|
||||
}
|
||||
if c.FuncGetWidth == nil {
|
||||
c.FuncGetWidth = GetScreenWidth
|
||||
}
|
||||
if c.FuncIsTerminal == nil {
|
||||
c.FuncIsTerminal = DefaultIsTerminal
|
||||
}
|
||||
rm := new(RawMode)
|
||||
if c.FuncMakeRaw == nil {
|
||||
c.FuncMakeRaw = rm.Enter
|
||||
}
|
||||
if c.FuncExitRaw == nil {
|
||||
c.FuncExitRaw = rm.Exit
|
||||
}
|
||||
if c.FuncOnWidthChanged == nil {
|
||||
c.FuncOnWidthChanged = DefaultOnWidthChanged
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c Config) Clone() *Config {
|
||||
c.opHistory = nil
|
||||
c.opSearch = nil
|
||||
return &c
|
||||
}
|
||||
|
||||
func (c *Config) SetListener(f func(line []rune, pos int, key rune) (newLine []rune, newPos int, ok bool)) {
|
||||
c.Listener = FuncListener(f)
|
||||
}
|
||||
|
||||
func NewEx(cfg *Config) (*Instance, error) {
|
||||
t, err := NewTerminal(cfg)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
rl := t.Readline()
|
||||
return &Instance{
|
||||
Config: cfg,
|
||||
Terminal: t,
|
||||
Operation: rl,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func New(prompt string) (*Instance, error) {
|
||||
return NewEx(&Config{Prompt: prompt})
|
||||
}
|
||||
|
||||
func (i *Instance) ResetHistory() {
|
||||
i.Operation.ResetHistory()
|
||||
}
|
||||
|
||||
func (i *Instance) SetPrompt(s string) {
|
||||
i.Operation.SetPrompt(s)
|
||||
}
|
||||
|
||||
func (i *Instance) SetMaskRune(r rune) {
|
||||
i.Operation.SetMaskRune(r)
|
||||
}
|
||||
|
||||
// change history persistence in runtime
|
||||
func (i *Instance) SetHistoryPath(p string) {
|
||||
i.Operation.SetHistoryPath(p)
|
||||
}
|
||||
|
||||
// readline will refresh automatic when write through Stdout()
|
||||
func (i *Instance) Stdout() io.Writer {
|
||||
return i.Operation.Stdout()
|
||||
}
|
||||
|
||||
// readline will refresh automatic when write through Stdout()
|
||||
func (i *Instance) Stderr() io.Writer {
|
||||
return i.Operation.Stderr()
|
||||
}
|
||||
|
||||
// switch VimMode in runtime
|
||||
func (i *Instance) SetVimMode(on bool) {
|
||||
i.Operation.SetVimMode(on)
|
||||
}
|
||||
|
||||
func (i *Instance) IsVimMode() bool {
|
||||
return i.Operation.IsEnableVimMode()
|
||||
}
|
||||
|
||||
func (i *Instance) GenPasswordConfig() *Config {
|
||||
return i.Operation.GenPasswordConfig()
|
||||
}
|
||||
|
||||
// we can generate a config by `i.GenPasswordConfig()`
|
||||
func (i *Instance) ReadPasswordWithConfig(cfg *Config) ([]byte, error) {
|
||||
return i.Operation.PasswordWithConfig(cfg)
|
||||
}
|
||||
|
||||
func (i *Instance) ReadPasswordEx(prompt string, l Listener) ([]byte, error) {
|
||||
return i.Operation.PasswordEx(prompt, l)
|
||||
}
|
||||
|
||||
func (i *Instance) ReadPassword(prompt string) ([]byte, error) {
|
||||
return i.Operation.Password(prompt)
|
||||
}
|
||||
|
||||
type Result struct {
|
||||
Line string
|
||||
Error error
|
||||
}
|
||||
|
||||
func (l *Result) CanContinue() bool {
|
||||
return len(l.Line) != 0 && l.Error == ErrInterrupt
|
||||
}
|
||||
|
||||
func (l *Result) CanBreak() bool {
|
||||
return !l.CanContinue() && l.Error != nil
|
||||
}
|
||||
|
||||
func (i *Instance) Line() *Result {
|
||||
ret, err := i.Readline()
|
||||
return &Result{ret, err}
|
||||
}
|
||||
|
||||
// err is one of (nil, io.EOF, readline.ErrInterrupt)
|
||||
func (i *Instance) Readline() (string, error) {
|
||||
return i.Operation.String()
|
||||
}
|
||||
|
||||
func (i *Instance) SaveHistory(content string) error {
|
||||
return i.Operation.SaveHistory(content)
|
||||
}
|
||||
|
||||
// same as readline
|
||||
func (i *Instance) ReadSlice() ([]byte, error) {
|
||||
return i.Operation.Slice()
|
||||
}
|
||||
|
||||
// we must make sure that call Close() before process exit.
|
||||
func (i *Instance) Close() error {
|
||||
if err := i.Terminal.Close(); err != nil {
|
||||
return err
|
||||
}
|
||||
i.Operation.Close()
|
||||
return nil
|
||||
}
|
||||
func (i *Instance) Clean() {
|
||||
i.Operation.Clean()
|
||||
}
|
||||
|
||||
func (i *Instance) Write(b []byte) (int, error) {
|
||||
return i.Stdout().Write(b)
|
||||
}
|
||||
|
||||
func (i *Instance) SetConfig(cfg *Config) *Config {
|
||||
if i.Config == cfg {
|
||||
return cfg
|
||||
}
|
||||
old := i.Config
|
||||
i.Config = cfg
|
||||
i.Operation.SetConfig(cfg)
|
||||
i.Terminal.SetConfig(cfg)
|
||||
return old
|
||||
}
|
||||
|
||||
func (i *Instance) Refresh() {
|
||||
i.Operation.Refresh()
|
||||
}
|
||||
|
|
@ -0,0 +1,474 @@
|
|||
package readline
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"io"
|
||||
"net"
|
||||
"os"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
)
|
||||
|
||||
type MsgType int16
|
||||
|
||||
const (
|
||||
T_DATA = MsgType(iota)
|
||||
T_WIDTH
|
||||
T_WIDTH_REPORT
|
||||
T_ISTTY_REPORT
|
||||
T_RAW
|
||||
T_ERAW // exit raw
|
||||
T_EOF
|
||||
)
|
||||
|
||||
type RemoteSvr struct {
|
||||
eof int32
|
||||
closed int32
|
||||
width int32
|
||||
reciveChan chan struct{}
|
||||
writeChan chan *writeCtx
|
||||
conn net.Conn
|
||||
isTerminal bool
|
||||
funcWidthChan func()
|
||||
stopChan chan struct{}
|
||||
|
||||
dataBufM sync.Mutex
|
||||
dataBuf bytes.Buffer
|
||||
}
|
||||
|
||||
type writeReply struct {
|
||||
n int
|
||||
err error
|
||||
}
|
||||
|
||||
type writeCtx struct {
|
||||
msg *Message
|
||||
reply chan *writeReply
|
||||
}
|
||||
|
||||
func newWriteCtx(msg *Message) *writeCtx {
|
||||
return &writeCtx{
|
||||
msg: msg,
|
||||
reply: make(chan *writeReply),
|
||||
}
|
||||
}
|
||||
|
||||
func NewRemoteSvr(conn net.Conn) (*RemoteSvr, error) {
|
||||
rs := &RemoteSvr{
|
||||
width: -1,
|
||||
conn: conn,
|
||||
writeChan: make(chan *writeCtx),
|
||||
reciveChan: make(chan struct{}),
|
||||
stopChan: make(chan struct{}),
|
||||
}
|
||||
buf := bufio.NewReader(rs.conn)
|
||||
|
||||
if err := rs.init(buf); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
go rs.readLoop(buf)
|
||||
go rs.writeLoop()
|
||||
return rs, nil
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) init(buf *bufio.Reader) error {
|
||||
m, err := ReadMessage(buf)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
// receive isTerminal
|
||||
if m.Type != T_ISTTY_REPORT {
|
||||
return fmt.Errorf("unexpected init message")
|
||||
}
|
||||
r.GotIsTerminal(m.Data)
|
||||
|
||||
// receive width
|
||||
m, err = ReadMessage(buf)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if m.Type != T_WIDTH_REPORT {
|
||||
return fmt.Errorf("unexpected init message")
|
||||
}
|
||||
r.GotReportWidth(m.Data)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) HandleConfig(cfg *Config) {
|
||||
cfg.Stderr = r
|
||||
cfg.Stdout = r
|
||||
cfg.Stdin = r
|
||||
cfg.FuncExitRaw = r.ExitRawMode
|
||||
cfg.FuncIsTerminal = r.IsTerminal
|
||||
cfg.FuncMakeRaw = r.EnterRawMode
|
||||
cfg.FuncExitRaw = r.ExitRawMode
|
||||
cfg.FuncGetWidth = r.GetWidth
|
||||
cfg.FuncOnWidthChanged = func(f func()) {
|
||||
r.funcWidthChan = f
|
||||
}
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) IsTerminal() bool {
|
||||
return r.isTerminal
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) checkEOF() error {
|
||||
if atomic.LoadInt32(&r.eof) == 1 {
|
||||
return io.EOF
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) Read(b []byte) (int, error) {
|
||||
r.dataBufM.Lock()
|
||||
n, err := r.dataBuf.Read(b)
|
||||
r.dataBufM.Unlock()
|
||||
if n == 0 {
|
||||
if err := r.checkEOF(); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
}
|
||||
|
||||
if n == 0 && err == io.EOF {
|
||||
<-r.reciveChan
|
||||
r.dataBufM.Lock()
|
||||
n, err = r.dataBuf.Read(b)
|
||||
r.dataBufM.Unlock()
|
||||
}
|
||||
if n == 0 {
|
||||
if err := r.checkEOF(); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
}
|
||||
|
||||
return n, err
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) writeMsg(m *Message) error {
|
||||
ctx := newWriteCtx(m)
|
||||
r.writeChan <- ctx
|
||||
reply := <-ctx.reply
|
||||
return reply.err
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) Write(b []byte) (int, error) {
|
||||
ctx := newWriteCtx(NewMessage(T_DATA, b))
|
||||
r.writeChan <- ctx
|
||||
reply := <-ctx.reply
|
||||
return reply.n, reply.err
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) EnterRawMode() error {
|
||||
return r.writeMsg(NewMessage(T_RAW, nil))
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) ExitRawMode() error {
|
||||
return r.writeMsg(NewMessage(T_ERAW, nil))
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) writeLoop() {
|
||||
defer r.Close()
|
||||
|
||||
loop:
|
||||
for {
|
||||
select {
|
||||
case ctx, ok := <-r.writeChan:
|
||||
if !ok {
|
||||
break
|
||||
}
|
||||
n, err := ctx.msg.WriteTo(r.conn)
|
||||
ctx.reply <- &writeReply{n, err}
|
||||
case <-r.stopChan:
|
||||
break loop
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) Close() {
|
||||
if atomic.CompareAndSwapInt32(&r.closed, 0, 1) {
|
||||
close(r.stopChan)
|
||||
r.conn.Close()
|
||||
}
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) readLoop(buf *bufio.Reader) {
|
||||
defer r.Close()
|
||||
for {
|
||||
m, err := ReadMessage(buf)
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
switch m.Type {
|
||||
case T_EOF:
|
||||
atomic.StoreInt32(&r.eof, 1)
|
||||
select {
|
||||
case r.reciveChan <- struct{}{}:
|
||||
default:
|
||||
}
|
||||
case T_DATA:
|
||||
r.dataBufM.Lock()
|
||||
r.dataBuf.Write(m.Data)
|
||||
r.dataBufM.Unlock()
|
||||
select {
|
||||
case r.reciveChan <- struct{}{}:
|
||||
default:
|
||||
}
|
||||
case T_WIDTH_REPORT:
|
||||
r.GotReportWidth(m.Data)
|
||||
case T_ISTTY_REPORT:
|
||||
r.GotIsTerminal(m.Data)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) GotIsTerminal(data []byte) {
|
||||
if binary.BigEndian.Uint16(data) == 0 {
|
||||
r.isTerminal = false
|
||||
} else {
|
||||
r.isTerminal = true
|
||||
}
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) GotReportWidth(data []byte) {
|
||||
atomic.StoreInt32(&r.width, int32(binary.BigEndian.Uint16(data)))
|
||||
if r.funcWidthChan != nil {
|
||||
r.funcWidthChan()
|
||||
}
|
||||
}
|
||||
|
||||
func (r *RemoteSvr) GetWidth() int {
|
||||
return int(atomic.LoadInt32(&r.width))
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
type Message struct {
|
||||
Type MsgType
|
||||
Data []byte
|
||||
}
|
||||
|
||||
func ReadMessage(r io.Reader) (*Message, error) {
|
||||
m := new(Message)
|
||||
var length int32
|
||||
if err := binary.Read(r, binary.BigEndian, &length); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := binary.Read(r, binary.BigEndian, &m.Type); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
m.Data = make([]byte, int(length)-2)
|
||||
if _, err := io.ReadFull(r, m.Data); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return m, nil
|
||||
}
|
||||
|
||||
func NewMessage(t MsgType, data []byte) *Message {
|
||||
return &Message{t, data}
|
||||
}
|
||||
|
||||
func (m *Message) WriteTo(w io.Writer) (int, error) {
|
||||
buf := bytes.NewBuffer(make([]byte, 0, len(m.Data)+2+4))
|
||||
binary.Write(buf, binary.BigEndian, int32(len(m.Data)+2))
|
||||
binary.Write(buf, binary.BigEndian, m.Type)
|
||||
buf.Write(m.Data)
|
||||
n, err := buf.WriteTo(w)
|
||||
return int(n), err
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
type RemoteCli struct {
|
||||
conn net.Conn
|
||||
raw RawMode
|
||||
receiveChan chan struct{}
|
||||
inited int32
|
||||
isTerminal *bool
|
||||
|
||||
data bytes.Buffer
|
||||
dataM sync.Mutex
|
||||
}
|
||||
|
||||
func NewRemoteCli(conn net.Conn) (*RemoteCli, error) {
|
||||
r := &RemoteCli{
|
||||
conn: conn,
|
||||
receiveChan: make(chan struct{}),
|
||||
}
|
||||
return r, nil
|
||||
}
|
||||
|
||||
func (r *RemoteCli) MarkIsTerminal(is bool) {
|
||||
r.isTerminal = &is
|
||||
}
|
||||
|
||||
func (r *RemoteCli) init() error {
|
||||
if !atomic.CompareAndSwapInt32(&r.inited, 0, 1) {
|
||||
return nil
|
||||
}
|
||||
|
||||
if err := r.reportIsTerminal(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := r.reportWidth(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// register sig for width changed
|
||||
DefaultOnWidthChanged(func() {
|
||||
r.reportWidth()
|
||||
})
|
||||
return nil
|
||||
}
|
||||
|
||||
func (r *RemoteCli) writeMsg(m *Message) error {
|
||||
r.dataM.Lock()
|
||||
_, err := m.WriteTo(r.conn)
|
||||
r.dataM.Unlock()
|
||||
return err
|
||||
}
|
||||
|
||||
func (r *RemoteCli) Write(b []byte) (int, error) {
|
||||
m := NewMessage(T_DATA, b)
|
||||
r.dataM.Lock()
|
||||
_, err := m.WriteTo(r.conn)
|
||||
r.dataM.Unlock()
|
||||
return len(b), err
|
||||
}
|
||||
|
||||
func (r *RemoteCli) reportWidth() error {
|
||||
screenWidth := GetScreenWidth()
|
||||
data := make([]byte, 2)
|
||||
binary.BigEndian.PutUint16(data, uint16(screenWidth))
|
||||
msg := NewMessage(T_WIDTH_REPORT, data)
|
||||
|
||||
if err := r.writeMsg(msg); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (r *RemoteCli) reportIsTerminal() error {
|
||||
var isTerminal bool
|
||||
if r.isTerminal != nil {
|
||||
isTerminal = *r.isTerminal
|
||||
} else {
|
||||
isTerminal = DefaultIsTerminal()
|
||||
}
|
||||
data := make([]byte, 2)
|
||||
if isTerminal {
|
||||
binary.BigEndian.PutUint16(data, 1)
|
||||
} else {
|
||||
binary.BigEndian.PutUint16(data, 0)
|
||||
}
|
||||
msg := NewMessage(T_ISTTY_REPORT, data)
|
||||
if err := r.writeMsg(msg); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (r *RemoteCli) readLoop() {
|
||||
buf := bufio.NewReader(r.conn)
|
||||
for {
|
||||
msg, err := ReadMessage(buf)
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
switch msg.Type {
|
||||
case T_ERAW:
|
||||
r.raw.Exit()
|
||||
case T_RAW:
|
||||
r.raw.Enter()
|
||||
case T_DATA:
|
||||
os.Stdout.Write(msg.Data)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (r *RemoteCli) ServeBy(source io.Reader) error {
|
||||
if err := r.init(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
go func() {
|
||||
defer r.Close()
|
||||
for {
|
||||
n, _ := io.Copy(r, source)
|
||||
if n == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
}()
|
||||
defer r.raw.Exit()
|
||||
r.readLoop()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (r *RemoteCli) Close() {
|
||||
r.writeMsg(NewMessage(T_EOF, nil))
|
||||
}
|
||||
|
||||
func (r *RemoteCli) Serve() error {
|
||||
return r.ServeBy(os.Stdin)
|
||||
}
|
||||
|
||||
func ListenRemote(n, addr string, cfg *Config, h func(*Instance), onListen ...func(net.Listener) error) error {
|
||||
ln, err := net.Listen(n, addr)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if len(onListen) > 0 {
|
||||
if err := onListen[0](ln); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
for {
|
||||
conn, err := ln.Accept()
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
go func() {
|
||||
defer conn.Close()
|
||||
rl, err := HandleConn(*cfg, conn)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
h(rl)
|
||||
}()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func HandleConn(cfg Config, conn net.Conn) (*Instance, error) {
|
||||
r, err := NewRemoteSvr(conn)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
r.HandleConfig(&cfg)
|
||||
|
||||
rl, err := NewEx(&cfg)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return rl, nil
|
||||
}
|
||||
|
||||
func DialRemote(n, addr string) error {
|
||||
conn, err := net.Dial(n, addr)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer conn.Close()
|
||||
|
||||
cli, err := NewRemoteCli(conn)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return cli.Serve()
|
||||
}
|
||||
|
|
@ -0,0 +1,573 @@
|
|||
package readline
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"io"
|
||||
"strings"
|
||||
"sync"
|
||||
)
|
||||
|
||||
type runeBufferBck struct {
|
||||
buf []rune
|
||||
idx int
|
||||
}
|
||||
|
||||
type RuneBuffer struct {
|
||||
buf []rune
|
||||
idx int
|
||||
prompt []rune
|
||||
w io.Writer
|
||||
|
||||
hadClean bool
|
||||
interactive bool
|
||||
cfg *Config
|
||||
|
||||
width int
|
||||
|
||||
bck *runeBufferBck
|
||||
|
||||
offset string
|
||||
|
||||
sync.Mutex
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) OnWidthChange(newWidth int) {
|
||||
r.Lock()
|
||||
Debug("WIDTH: ", newWidth)
|
||||
r.width = newWidth
|
||||
r.Unlock()
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Backup() {
|
||||
r.Lock()
|
||||
r.bck = &runeBufferBck{r.buf, r.idx}
|
||||
r.Unlock()
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Restore() {
|
||||
r.Refresh(func() {
|
||||
if r.bck == nil {
|
||||
return
|
||||
}
|
||||
r.buf = r.bck.buf
|
||||
r.idx = r.bck.idx
|
||||
})
|
||||
}
|
||||
|
||||
func NewRuneBuffer(w io.Writer, prompt string, cfg *Config, width int) *RuneBuffer {
|
||||
rb := &RuneBuffer{
|
||||
w: w,
|
||||
interactive: cfg.useInteractive(),
|
||||
cfg: cfg,
|
||||
width: width,
|
||||
}
|
||||
rb.SetPrompt(prompt)
|
||||
return rb
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) SetConfig(cfg *Config) {
|
||||
r.Lock()
|
||||
r.cfg = cfg
|
||||
r.interactive = cfg.useInteractive()
|
||||
r.Unlock()
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) SetMask(m rune) {
|
||||
r.Lock()
|
||||
r.cfg.MaskRune = m
|
||||
r.Unlock()
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) CurrentWidth(x int) int {
|
||||
r.Lock()
|
||||
defer r.Unlock()
|
||||
return runes.WidthAll(r.buf[:x])
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) PromptLen() int {
|
||||
r.Lock()
|
||||
width := r.promptLen()
|
||||
r.Unlock()
|
||||
return width
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) promptLen() int {
|
||||
return runes.WidthAll(runes.ColorFilter(r.prompt))
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) RuneSlice(i int) []rune {
|
||||
r.Lock()
|
||||
defer r.Unlock()
|
||||
|
||||
if i > 0 {
|
||||
rs := make([]rune, i)
|
||||
copy(rs, r.buf[r.idx:r.idx+i])
|
||||
return rs
|
||||
}
|
||||
rs := make([]rune, -i)
|
||||
copy(rs, r.buf[r.idx+i:r.idx])
|
||||
return rs
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Runes() []rune {
|
||||
r.Lock()
|
||||
newr := make([]rune, len(r.buf))
|
||||
copy(newr, r.buf)
|
||||
r.Unlock()
|
||||
return newr
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Pos() int {
|
||||
r.Lock()
|
||||
defer r.Unlock()
|
||||
return r.idx
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Len() int {
|
||||
r.Lock()
|
||||
defer r.Unlock()
|
||||
return len(r.buf)
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) MoveToLineStart() {
|
||||
r.Refresh(func() {
|
||||
if r.idx == 0 {
|
||||
return
|
||||
}
|
||||
r.idx = 0
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) MoveBackward() {
|
||||
r.Refresh(func() {
|
||||
if r.idx == 0 {
|
||||
return
|
||||
}
|
||||
r.idx--
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) WriteString(s string) {
|
||||
r.WriteRunes([]rune(s))
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) WriteRune(s rune) {
|
||||
r.WriteRunes([]rune{s})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) WriteRunes(s []rune) {
|
||||
r.Refresh(func() {
|
||||
tail := append(s, r.buf[r.idx:]...)
|
||||
r.buf = append(r.buf[:r.idx], tail...)
|
||||
r.idx += len(s)
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) MoveForward() {
|
||||
r.Refresh(func() {
|
||||
if r.idx == len(r.buf) {
|
||||
return
|
||||
}
|
||||
r.idx++
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) IsCursorInEnd() bool {
|
||||
r.Lock()
|
||||
defer r.Unlock()
|
||||
return r.idx == len(r.buf)
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Replace(ch rune) {
|
||||
r.Refresh(func() {
|
||||
r.buf[r.idx] = ch
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Erase() {
|
||||
r.Refresh(func() {
|
||||
r.idx = 0
|
||||
r.buf = r.buf[:0]
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Delete() (success bool) {
|
||||
r.Refresh(func() {
|
||||
if r.idx == len(r.buf) {
|
||||
return
|
||||
}
|
||||
r.buf = append(r.buf[:r.idx], r.buf[r.idx+1:]...)
|
||||
success = true
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) DeleteWord() {
|
||||
if r.idx == len(r.buf) {
|
||||
return
|
||||
}
|
||||
init := r.idx
|
||||
for init < len(r.buf) && IsWordBreak(r.buf[init]) {
|
||||
init++
|
||||
}
|
||||
for i := init + 1; i < len(r.buf); i++ {
|
||||
if !IsWordBreak(r.buf[i]) && IsWordBreak(r.buf[i-1]) {
|
||||
r.Refresh(func() {
|
||||
r.buf = append(r.buf[:r.idx], r.buf[i-1:]...)
|
||||
})
|
||||
return
|
||||
}
|
||||
}
|
||||
r.Kill()
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) MoveToPrevWord() (success bool) {
|
||||
r.Refresh(func() {
|
||||
if r.idx == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
for i := r.idx - 1; i > 0; i-- {
|
||||
if !IsWordBreak(r.buf[i]) && IsWordBreak(r.buf[i-1]) {
|
||||
r.idx = i
|
||||
success = true
|
||||
return
|
||||
}
|
||||
}
|
||||
r.idx = 0
|
||||
success = true
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) KillFront() {
|
||||
r.Refresh(func() {
|
||||
if r.idx == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
length := len(r.buf) - r.idx
|
||||
copy(r.buf[:length], r.buf[r.idx:])
|
||||
r.idx = 0
|
||||
r.buf = r.buf[:length]
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Kill() {
|
||||
r.Refresh(func() {
|
||||
r.buf = r.buf[:r.idx]
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Transpose() {
|
||||
r.Refresh(func() {
|
||||
if len(r.buf) == 1 {
|
||||
r.idx++
|
||||
}
|
||||
|
||||
if len(r.buf) < 2 {
|
||||
return
|
||||
}
|
||||
|
||||
if r.idx == 0 {
|
||||
r.idx = 1
|
||||
} else if r.idx >= len(r.buf) {
|
||||
r.idx = len(r.buf) - 1
|
||||
}
|
||||
r.buf[r.idx], r.buf[r.idx-1] = r.buf[r.idx-1], r.buf[r.idx]
|
||||
r.idx++
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) MoveToNextWord() {
|
||||
r.Refresh(func() {
|
||||
for i := r.idx + 1; i < len(r.buf); i++ {
|
||||
if !IsWordBreak(r.buf[i]) && IsWordBreak(r.buf[i-1]) {
|
||||
r.idx = i
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
r.idx = len(r.buf)
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) MoveToEndWord() {
|
||||
r.Refresh(func() {
|
||||
// already at the end, so do nothing
|
||||
if r.idx == len(r.buf) {
|
||||
return
|
||||
}
|
||||
// if we are at the end of a word already, go to next
|
||||
if !IsWordBreak(r.buf[r.idx]) && IsWordBreak(r.buf[r.idx+1]) {
|
||||
r.idx++
|
||||
}
|
||||
|
||||
// keep going until at the end of a word
|
||||
for i := r.idx + 1; i < len(r.buf); i++ {
|
||||
if IsWordBreak(r.buf[i]) && !IsWordBreak(r.buf[i-1]) {
|
||||
r.idx = i - 1
|
||||
return
|
||||
}
|
||||
}
|
||||
r.idx = len(r.buf)
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) BackEscapeWord() {
|
||||
r.Refresh(func() {
|
||||
if r.idx == 0 {
|
||||
return
|
||||
}
|
||||
for i := r.idx - 1; i > 0; i-- {
|
||||
if !IsWordBreak(r.buf[i]) && IsWordBreak(r.buf[i-1]) {
|
||||
r.buf = append(r.buf[:i], r.buf[r.idx:]...)
|
||||
r.idx = i
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
r.buf = r.buf[:0]
|
||||
r.idx = 0
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Backspace() {
|
||||
r.Refresh(func() {
|
||||
if r.idx == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
r.idx--
|
||||
r.buf = append(r.buf[:r.idx], r.buf[r.idx+1:]...)
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) MoveToLineEnd() {
|
||||
r.Refresh(func() {
|
||||
if r.idx == len(r.buf) {
|
||||
return
|
||||
}
|
||||
|
||||
r.idx = len(r.buf)
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) LineCount(width int) int {
|
||||
if width == -1 {
|
||||
width = r.width
|
||||
}
|
||||
return LineCount(width,
|
||||
runes.WidthAll(r.buf)+r.PromptLen())
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) MoveTo(ch rune, prevChar, reverse bool) (success bool) {
|
||||
r.Refresh(func() {
|
||||
if reverse {
|
||||
for i := r.idx - 1; i >= 0; i-- {
|
||||
if r.buf[i] == ch {
|
||||
r.idx = i
|
||||
if prevChar {
|
||||
r.idx++
|
||||
}
|
||||
success = true
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
for i := r.idx + 1; i < len(r.buf); i++ {
|
||||
if r.buf[i] == ch {
|
||||
r.idx = i
|
||||
if prevChar {
|
||||
r.idx--
|
||||
}
|
||||
success = true
|
||||
return
|
||||
}
|
||||
}
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) isInLineEdge() bool {
|
||||
if isWindows {
|
||||
return false
|
||||
}
|
||||
sp := r.getSplitByLine(r.buf)
|
||||
return len(sp[len(sp)-1]) == 0
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) getSplitByLine(rs []rune) []string {
|
||||
return SplitByLine(r.promptLen(), r.width, rs)
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) IdxLine(width int) int {
|
||||
r.Lock()
|
||||
defer r.Unlock()
|
||||
return r.idxLine(width)
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) idxLine(width int) int {
|
||||
if width == 0 {
|
||||
return 0
|
||||
}
|
||||
sp := r.getSplitByLine(r.buf[:r.idx])
|
||||
return len(sp) - 1
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) CursorLineCount() int {
|
||||
return r.LineCount(r.width) - r.IdxLine(r.width)
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Refresh(f func()) {
|
||||
r.Lock()
|
||||
defer r.Unlock()
|
||||
|
||||
if !r.interactive {
|
||||
if f != nil {
|
||||
f()
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
r.clean()
|
||||
if f != nil {
|
||||
f()
|
||||
}
|
||||
r.print()
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) SetOffset(offset string) {
|
||||
r.Lock()
|
||||
r.offset = offset
|
||||
r.Unlock()
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) print() {
|
||||
r.w.Write(r.output())
|
||||
r.hadClean = false
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) output() []byte {
|
||||
buf := bytes.NewBuffer(nil)
|
||||
buf.WriteString(string(r.prompt))
|
||||
if r.cfg.EnableMask && len(r.buf) > 0 {
|
||||
buf.Write([]byte(strings.Repeat(string(r.cfg.MaskRune), len(r.buf)-1)))
|
||||
if r.buf[len(r.buf)-1] == '\n' {
|
||||
buf.Write([]byte{'\n'})
|
||||
} else {
|
||||
buf.Write([]byte(string(r.cfg.MaskRune)))
|
||||
}
|
||||
if len(r.buf) > r.idx {
|
||||
buf.Write(runes.Backspace(r.buf[r.idx:]))
|
||||
}
|
||||
|
||||
} else {
|
||||
for idx := range r.buf {
|
||||
if r.buf[idx] == '\t' {
|
||||
buf.WriteString(strings.Repeat(" ", TabWidth))
|
||||
} else {
|
||||
buf.WriteRune(r.buf[idx])
|
||||
}
|
||||
}
|
||||
if r.isInLineEdge() {
|
||||
buf.Write([]byte(" \b"))
|
||||
}
|
||||
}
|
||||
|
||||
if len(r.buf) > r.idx {
|
||||
buf.Write(runes.Backspace(r.buf[r.idx:]))
|
||||
}
|
||||
return buf.Bytes()
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Reset() []rune {
|
||||
ret := runes.Copy(r.buf)
|
||||
r.buf = r.buf[:0]
|
||||
r.idx = 0
|
||||
return ret
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) calWidth(m int) int {
|
||||
if m > 0 {
|
||||
return runes.WidthAll(r.buf[r.idx : r.idx+m])
|
||||
}
|
||||
return runes.WidthAll(r.buf[r.idx+m : r.idx])
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) SetStyle(start, end int, style string) {
|
||||
if end < start {
|
||||
panic("end < start")
|
||||
}
|
||||
|
||||
// goto start
|
||||
move := start - r.idx
|
||||
if move > 0 {
|
||||
r.w.Write([]byte(string(r.buf[r.idx : r.idx+move])))
|
||||
} else {
|
||||
r.w.Write(bytes.Repeat([]byte("\b"), r.calWidth(move)))
|
||||
}
|
||||
r.w.Write([]byte("\033[" + style + "m"))
|
||||
r.w.Write([]byte(string(r.buf[start:end])))
|
||||
r.w.Write([]byte("\033[0m"))
|
||||
// TODO: move back
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) SetWithIdx(idx int, buf []rune) {
|
||||
r.Refresh(func() {
|
||||
r.buf = buf
|
||||
r.idx = idx
|
||||
})
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Set(buf []rune) {
|
||||
r.SetWithIdx(len(buf), buf)
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) SetPrompt(prompt string) {
|
||||
r.Lock()
|
||||
r.prompt = []rune(prompt)
|
||||
r.Unlock()
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) cleanOutput(w io.Writer, idxLine int) {
|
||||
buf := bufio.NewWriter(w)
|
||||
|
||||
if r.width == 0 {
|
||||
buf.WriteString(strings.Repeat("\r\b", len(r.buf)+r.promptLen()))
|
||||
buf.Write([]byte("\033[J"))
|
||||
} else {
|
||||
buf.Write([]byte("\033[J")) // just like ^k :)
|
||||
if idxLine == 0 {
|
||||
buf.WriteString("\033[2K")
|
||||
buf.WriteString("\r")
|
||||
} else {
|
||||
for i := 0; i < idxLine; i++ {
|
||||
io.WriteString(buf, "\033[2K\r\033[A")
|
||||
}
|
||||
io.WriteString(buf, "\033[2K\r")
|
||||
}
|
||||
}
|
||||
buf.Flush()
|
||||
return
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) Clean() {
|
||||
r.Lock()
|
||||
r.clean()
|
||||
r.Unlock()
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) clean() {
|
||||
r.cleanWithIdxLine(r.idxLine(r.width))
|
||||
}
|
||||
|
||||
func (r *RuneBuffer) cleanWithIdxLine(idxLine int) {
|
||||
if r.hadClean || !r.interactive {
|
||||
return
|
||||
}
|
||||
r.hadClean = true
|
||||
r.cleanOutput(r.w, idxLine)
|
||||
}
|
||||
|
|
@ -0,0 +1,223 @@
|
|||
package readline
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"unicode"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
var runes = Runes{}
|
||||
var TabWidth = 4
|
||||
|
||||
type Runes struct{}
|
||||
|
||||
func (Runes) EqualRune(a, b rune, fold bool) bool {
|
||||
if a == b {
|
||||
return true
|
||||
}
|
||||
if !fold {
|
||||
return false
|
||||
}
|
||||
if a > b {
|
||||
a, b = b, a
|
||||
}
|
||||
if b < utf8.RuneSelf && 'A' <= a && a <= 'Z' {
|
||||
if b == a+'a'-'A' {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func (r Runes) EqualRuneFold(a, b rune) bool {
|
||||
return r.EqualRune(a, b, true)
|
||||
}
|
||||
|
||||
func (r Runes) EqualFold(a, b []rune) bool {
|
||||
if len(a) != len(b) {
|
||||
return false
|
||||
}
|
||||
for i := 0; i < len(a); i++ {
|
||||
if r.EqualRuneFold(a[i], b[i]) {
|
||||
continue
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
func (Runes) Equal(a, b []rune) bool {
|
||||
if len(a) != len(b) {
|
||||
return false
|
||||
}
|
||||
for i := 0; i < len(a); i++ {
|
||||
if a[i] != b[i] {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func (rs Runes) IndexAllBckEx(r, sub []rune, fold bool) int {
|
||||
for i := len(r) - len(sub); i >= 0; i-- {
|
||||
found := true
|
||||
for j := 0; j < len(sub); j++ {
|
||||
if !rs.EqualRune(r[i+j], sub[j], fold) {
|
||||
found = false
|
||||
break
|
||||
}
|
||||
}
|
||||
if found {
|
||||
return i
|
||||
}
|
||||
}
|
||||
return -1
|
||||
}
|
||||
|
||||
// Search in runes from end to front
|
||||
func (rs Runes) IndexAllBck(r, sub []rune) int {
|
||||
return rs.IndexAllBckEx(r, sub, false)
|
||||
}
|
||||
|
||||
// Search in runes from front to end
|
||||
func (rs Runes) IndexAll(r, sub []rune) int {
|
||||
return rs.IndexAllEx(r, sub, false)
|
||||
}
|
||||
|
||||
func (rs Runes) IndexAllEx(r, sub []rune, fold bool) int {
|
||||
for i := 0; i < len(r); i++ {
|
||||
found := true
|
||||
if len(r[i:]) < len(sub) {
|
||||
return -1
|
||||
}
|
||||
for j := 0; j < len(sub); j++ {
|
||||
if !rs.EqualRune(r[i+j], sub[j], fold) {
|
||||
found = false
|
||||
break
|
||||
}
|
||||
}
|
||||
if found {
|
||||
return i
|
||||
}
|
||||
}
|
||||
return -1
|
||||
}
|
||||
|
||||
func (Runes) Index(r rune, rs []rune) int {
|
||||
for i := 0; i < len(rs); i++ {
|
||||
if rs[i] == r {
|
||||
return i
|
||||
}
|
||||
}
|
||||
return -1
|
||||
}
|
||||
|
||||
func (Runes) ColorFilter(r []rune) []rune {
|
||||
newr := make([]rune, 0, len(r))
|
||||
for pos := 0; pos < len(r); pos++ {
|
||||
if r[pos] == '\033' && r[pos+1] == '[' {
|
||||
idx := runes.Index('m', r[pos+2:])
|
||||
if idx == -1 {
|
||||
continue
|
||||
}
|
||||
pos += idx + 2
|
||||
continue
|
||||
}
|
||||
newr = append(newr, r[pos])
|
||||
}
|
||||
return newr
|
||||
}
|
||||
|
||||
var zeroWidth = []*unicode.RangeTable{
|
||||
unicode.Mn,
|
||||
unicode.Me,
|
||||
unicode.Cc,
|
||||
unicode.Cf,
|
||||
}
|
||||
|
||||
var doubleWidth = []*unicode.RangeTable{
|
||||
unicode.Han,
|
||||
unicode.Hangul,
|
||||
unicode.Hiragana,
|
||||
unicode.Katakana,
|
||||
}
|
||||
|
||||
func (Runes) Width(r rune) int {
|
||||
if r == '\t' {
|
||||
return TabWidth
|
||||
}
|
||||
if unicode.IsOneOf(zeroWidth, r) {
|
||||
return 0
|
||||
}
|
||||
if unicode.IsOneOf(doubleWidth, r) {
|
||||
return 2
|
||||
}
|
||||
return 1
|
||||
}
|
||||
|
||||
func (Runes) WidthAll(r []rune) (length int) {
|
||||
for i := 0; i < len(r); i++ {
|
||||
length += runes.Width(r[i])
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (Runes) Backspace(r []rune) []byte {
|
||||
return bytes.Repeat([]byte{'\b'}, runes.WidthAll(r))
|
||||
}
|
||||
|
||||
func (Runes) Copy(r []rune) []rune {
|
||||
n := make([]rune, len(r))
|
||||
copy(n, r)
|
||||
return n
|
||||
}
|
||||
|
||||
func (Runes) HasPrefixFold(r, prefix []rune) bool {
|
||||
if len(r) < len(prefix) {
|
||||
return false
|
||||
}
|
||||
return runes.EqualFold(r[:len(prefix)], prefix)
|
||||
}
|
||||
|
||||
func (Runes) HasPrefix(r, prefix []rune) bool {
|
||||
if len(r) < len(prefix) {
|
||||
return false
|
||||
}
|
||||
return runes.Equal(r[:len(prefix)], prefix)
|
||||
}
|
||||
|
||||
func (Runes) Aggregate(candicate [][]rune) (same []rune, size int) {
|
||||
for i := 0; i < len(candicate[0]); i++ {
|
||||
for j := 0; j < len(candicate)-1; j++ {
|
||||
if i >= len(candicate[j]) || i >= len(candicate[j+1]) {
|
||||
goto aggregate
|
||||
}
|
||||
if candicate[j][i] != candicate[j+1][i] {
|
||||
goto aggregate
|
||||
}
|
||||
}
|
||||
size = i + 1
|
||||
}
|
||||
aggregate:
|
||||
if size > 0 {
|
||||
same = runes.Copy(candicate[0][:size])
|
||||
for i := 0; i < len(candicate); i++ {
|
||||
n := runes.Copy(candicate[i])
|
||||
copy(n, n[size:])
|
||||
candicate[i] = n[:len(n)-size]
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (Runes) TrimSpaceLeft(in []rune) []rune {
|
||||
firstIndex := len(in)
|
||||
for i, r := range in {
|
||||
if unicode.IsSpace(r) == false {
|
||||
firstIndex = i
|
||||
break
|
||||
}
|
||||
}
|
||||
return in[firstIndex:]
|
||||
}
|
||||
|
|
@ -0,0 +1,164 @@
|
|||
package readline
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"container/list"
|
||||
"fmt"
|
||||
"io"
|
||||
)
|
||||
|
||||
const (
|
||||
S_STATE_FOUND = iota
|
||||
S_STATE_FAILING
|
||||
)
|
||||
|
||||
const (
|
||||
S_DIR_BCK = iota
|
||||
S_DIR_FWD
|
||||
)
|
||||
|
||||
type opSearch struct {
|
||||
inMode bool
|
||||
state int
|
||||
dir int
|
||||
source *list.Element
|
||||
w io.Writer
|
||||
buf *RuneBuffer
|
||||
data []rune
|
||||
history *opHistory
|
||||
cfg *Config
|
||||
markStart int
|
||||
markEnd int
|
||||
width int
|
||||
}
|
||||
|
||||
func newOpSearch(w io.Writer, buf *RuneBuffer, history *opHistory, cfg *Config, width int) *opSearch {
|
||||
return &opSearch{
|
||||
w: w,
|
||||
buf: buf,
|
||||
cfg: cfg,
|
||||
history: history,
|
||||
width: width,
|
||||
}
|
||||
}
|
||||
|
||||
func (o *opSearch) OnWidthChange(newWidth int) {
|
||||
o.width = newWidth
|
||||
}
|
||||
|
||||
func (o *opSearch) IsSearchMode() bool {
|
||||
return o.inMode
|
||||
}
|
||||
|
||||
func (o *opSearch) SearchBackspace() {
|
||||
if len(o.data) > 0 {
|
||||
o.data = o.data[:len(o.data)-1]
|
||||
o.search(true)
|
||||
}
|
||||
}
|
||||
|
||||
func (o *opSearch) findHistoryBy(isNewSearch bool) (int, *list.Element) {
|
||||
if o.dir == S_DIR_BCK {
|
||||
return o.history.FindBck(isNewSearch, o.data, o.buf.idx)
|
||||
}
|
||||
return o.history.FindFwd(isNewSearch, o.data, o.buf.idx)
|
||||
}
|
||||
|
||||
func (o *opSearch) search(isChange bool) bool {
|
||||
if len(o.data) == 0 {
|
||||
o.state = S_STATE_FOUND
|
||||
o.SearchRefresh(-1)
|
||||
return true
|
||||
}
|
||||
idx, elem := o.findHistoryBy(isChange)
|
||||
if elem == nil {
|
||||
o.SearchRefresh(-2)
|
||||
return false
|
||||
}
|
||||
o.history.current = elem
|
||||
|
||||
item := o.history.showItem(o.history.current.Value)
|
||||
start, end := 0, 0
|
||||
if o.dir == S_DIR_BCK {
|
||||
start, end = idx, idx+len(o.data)
|
||||
} else {
|
||||
start, end = idx, idx+len(o.data)
|
||||
idx += len(o.data)
|
||||
}
|
||||
o.buf.SetWithIdx(idx, item)
|
||||
o.markStart, o.markEnd = start, end
|
||||
o.SearchRefresh(idx)
|
||||
return true
|
||||
}
|
||||
|
||||
func (o *opSearch) SearchChar(r rune) {
|
||||
o.data = append(o.data, r)
|
||||
o.search(true)
|
||||
}
|
||||
|
||||
func (o *opSearch) SearchMode(dir int) bool {
|
||||
if o.width == 0 {
|
||||
return false
|
||||
}
|
||||
alreadyInMode := o.inMode
|
||||
o.inMode = true
|
||||
o.dir = dir
|
||||
o.source = o.history.current
|
||||
if alreadyInMode {
|
||||
o.search(false)
|
||||
} else {
|
||||
o.SearchRefresh(-1)
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func (o *opSearch) ExitSearchMode(revert bool) {
|
||||
if revert {
|
||||
o.history.current = o.source
|
||||
o.buf.Set(o.history.showItem(o.history.current.Value))
|
||||
}
|
||||
o.markStart, o.markEnd = 0, 0
|
||||
o.state = S_STATE_FOUND
|
||||
o.inMode = false
|
||||
o.source = nil
|
||||
o.data = nil
|
||||
}
|
||||
|
||||
func (o *opSearch) SearchRefresh(x int) {
|
||||
if x == -2 {
|
||||
o.state = S_STATE_FAILING
|
||||
} else if x >= 0 {
|
||||
o.state = S_STATE_FOUND
|
||||
}
|
||||
if x < 0 {
|
||||
x = o.buf.idx
|
||||
}
|
||||
x = o.buf.CurrentWidth(x)
|
||||
x += o.buf.PromptLen()
|
||||
x = x % o.width
|
||||
|
||||
if o.markStart > 0 {
|
||||
o.buf.SetStyle(o.markStart, o.markEnd, "4")
|
||||
}
|
||||
|
||||
lineCnt := o.buf.CursorLineCount()
|
||||
buf := bytes.NewBuffer(nil)
|
||||
buf.Write(bytes.Repeat([]byte("\n"), lineCnt))
|
||||
buf.WriteString("\033[J")
|
||||
if o.state == S_STATE_FAILING {
|
||||
buf.WriteString("failing ")
|
||||
}
|
||||
if o.dir == S_DIR_BCK {
|
||||
buf.WriteString("bck")
|
||||
} else if o.dir == S_DIR_FWD {
|
||||
buf.WriteString("fwd")
|
||||
}
|
||||
buf.WriteString("-i-search: ")
|
||||
buf.WriteString(string(o.data)) // keyword
|
||||
buf.WriteString("\033[4m \033[0m") // _
|
||||
fmt.Fprintf(buf, "\r\033[%dA", lineCnt) // move prev
|
||||
if x > 0 {
|
||||
fmt.Fprintf(buf, "\033[%dC", x) // move forward
|
||||
}
|
||||
o.w.Write(buf.Bytes())
|
||||
}
|
||||
|
|
@ -0,0 +1,133 @@
|
|||
package readline
|
||||
|
||||
import (
|
||||
"io"
|
||||
"os"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
)
|
||||
|
||||
var (
|
||||
Stdin io.ReadCloser = os.Stdin
|
||||
Stdout io.WriteCloser = os.Stdout
|
||||
Stderr io.WriteCloser = os.Stderr
|
||||
)
|
||||
|
||||
var (
|
||||
std *Instance
|
||||
stdOnce sync.Once
|
||||
)
|
||||
|
||||
// global instance will not submit history automatic
|
||||
func getInstance() *Instance {
|
||||
stdOnce.Do(func() {
|
||||
std, _ = NewEx(&Config{
|
||||
DisableAutoSaveHistory: true,
|
||||
})
|
||||
})
|
||||
return std
|
||||
}
|
||||
|
||||
// let readline load history from filepath
|
||||
// and try to persist history into disk
|
||||
// set fp to "" to prevent readline persisting history to disk
|
||||
// so the `AddHistory` will return nil error forever.
|
||||
func SetHistoryPath(fp string) {
|
||||
ins := getInstance()
|
||||
cfg := ins.Config.Clone()
|
||||
cfg.HistoryFile = fp
|
||||
ins.SetConfig(cfg)
|
||||
}
|
||||
|
||||
// set auto completer to global instance
|
||||
func SetAutoComplete(completer AutoCompleter) {
|
||||
ins := getInstance()
|
||||
cfg := ins.Config.Clone()
|
||||
cfg.AutoComplete = completer
|
||||
ins.SetConfig(cfg)
|
||||
}
|
||||
|
||||
// add history to global instance manually
|
||||
// raise error only if `SetHistoryPath` is set with a non-empty path
|
||||
func AddHistory(content string) error {
|
||||
ins := getInstance()
|
||||
return ins.SaveHistory(content)
|
||||
}
|
||||
|
||||
func Password(prompt string) ([]byte, error) {
|
||||
ins := getInstance()
|
||||
return ins.ReadPassword(prompt)
|
||||
}
|
||||
|
||||
// readline with global configs
|
||||
func Line(prompt string) (string, error) {
|
||||
ins := getInstance()
|
||||
ins.SetPrompt(prompt)
|
||||
return ins.Readline()
|
||||
}
|
||||
|
||||
type CancelableStdin struct {
|
||||
r io.Reader
|
||||
mutex sync.Mutex
|
||||
stop chan struct{}
|
||||
closed int32
|
||||
notify chan struct{}
|
||||
data []byte
|
||||
read int
|
||||
err error
|
||||
}
|
||||
|
||||
func NewCancelableStdin(r io.Reader) *CancelableStdin {
|
||||
c := &CancelableStdin{
|
||||
r: r,
|
||||
notify: make(chan struct{}),
|
||||
stop: make(chan struct{}),
|
||||
}
|
||||
go c.ioloop()
|
||||
return c
|
||||
}
|
||||
|
||||
func (c *CancelableStdin) ioloop() {
|
||||
loop:
|
||||
for {
|
||||
select {
|
||||
case <-c.notify:
|
||||
c.read, c.err = c.r.Read(c.data)
|
||||
select {
|
||||
case c.notify <- struct{}{}:
|
||||
case <-c.stop:
|
||||
break loop
|
||||
}
|
||||
case <-c.stop:
|
||||
break loop
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (c *CancelableStdin) Read(b []byte) (n int, err error) {
|
||||
c.mutex.Lock()
|
||||
defer c.mutex.Unlock()
|
||||
if atomic.LoadInt32(&c.closed) == 1 {
|
||||
return 0, io.EOF
|
||||
}
|
||||
|
||||
c.data = b
|
||||
select {
|
||||
case c.notify <- struct{}{}:
|
||||
case <-c.stop:
|
||||
return 0, io.EOF
|
||||
}
|
||||
select {
|
||||
case <-c.notify:
|
||||
return c.read, c.err
|
||||
case <-c.stop:
|
||||
return 0, io.EOF
|
||||
}
|
||||
}
|
||||
|
||||
func (c *CancelableStdin) Close() error {
|
||||
if atomic.CompareAndSwapInt32(&c.closed, 0, 1) {
|
||||
close(c.stop)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
// +build windows
|
||||
|
||||
package readline
|
||||
|
||||
func init() {
|
||||
Stdin = NewRawReader()
|
||||
Stdout = NewANSIWriter(Stdout)
|
||||
Stderr = NewANSIWriter(Stderr)
|
||||
}
|
||||
|
|
@ -0,0 +1,134 @@
|
|||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build darwin dragonfly freebsd linux,!appengine netbsd openbsd
|
||||
|
||||
// Package terminal provides support functions for dealing with terminals, as
|
||||
// commonly found on UNIX systems.
|
||||
//
|
||||
// Putting a terminal into raw mode is the most common requirement:
|
||||
//
|
||||
// oldState, err := terminal.MakeRaw(0)
|
||||
// if err != nil {
|
||||
// panic(err)
|
||||
// }
|
||||
// defer terminal.Restore(0, oldState)
|
||||
package readline
|
||||
|
||||
import (
|
||||
"io"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// State contains the state of a terminal.
|
||||
type State struct {
|
||||
termios syscall.Termios
|
||||
}
|
||||
|
||||
// IsTerminal returns true if the given file descriptor is a terminal.
|
||||
func IsTerminal(fd int) bool {
|
||||
var termios syscall.Termios
|
||||
_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
|
||||
return err == 0
|
||||
}
|
||||
|
||||
// MakeRaw put the terminal connected to the given file descriptor into raw
|
||||
// mode and returns the previous state of the terminal so that it can be
|
||||
// restored.
|
||||
func MakeRaw(fd int) (*State, error) {
|
||||
var oldState State
|
||||
if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
newState := oldState.termios
|
||||
// This attempts to replicate the behaviour documented for cfmakeraw in
|
||||
// the termios(3) manpage.
|
||||
newState.Iflag &^= syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON
|
||||
// newState.Oflag &^= syscall.OPOST
|
||||
newState.Lflag &^= syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN
|
||||
newState.Cflag &^= syscall.CSIZE | syscall.PARENB
|
||||
newState.Cflag |= syscall.CS8
|
||||
|
||||
if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &oldState, nil
|
||||
}
|
||||
|
||||
// GetState returns the current state of a terminal which may be useful to
|
||||
// restore the terminal after a signal.
|
||||
func GetState(fd int) (*State, error) {
|
||||
var oldState State
|
||||
if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &oldState, nil
|
||||
}
|
||||
|
||||
// Restore restores the terminal connected to the given file descriptor to a
|
||||
// previous state.
|
||||
func restoreTerm(fd int, state *State) error {
|
||||
_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&state.termios)), 0, 0, 0)
|
||||
return err
|
||||
}
|
||||
|
||||
// GetSize returns the dimensions of the given terminal.
|
||||
func GetSize(fd int) (width, height int, err error) {
|
||||
var dimensions [4]uint16
|
||||
|
||||
if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&dimensions)), 0, 0, 0); err != 0 {
|
||||
return -1, -1, err
|
||||
}
|
||||
return int(dimensions[1]), int(dimensions[0]), nil
|
||||
}
|
||||
|
||||
// ReadPassword reads a line of input from a terminal without local echo. This
|
||||
// is commonly used for inputting passwords and other sensitive data. The slice
|
||||
// returned does not include the \n.
|
||||
func ReadPassword(fd int) ([]byte, error) {
|
||||
var oldState syscall.Termios
|
||||
if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState)), 0, 0, 0); err != 0 {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
newState := oldState
|
||||
newState.Lflag &^= syscall.ECHO
|
||||
newState.Lflag |= syscall.ICANON | syscall.ISIG
|
||||
newState.Iflag |= syscall.ICRNL
|
||||
if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
defer func() {
|
||||
syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&oldState)), 0, 0, 0)
|
||||
}()
|
||||
|
||||
var buf [16]byte
|
||||
var ret []byte
|
||||
for {
|
||||
n, err := syscall.Read(fd, buf[:])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if n == 0 {
|
||||
if len(ret) == 0 {
|
||||
return nil, io.EOF
|
||||
}
|
||||
break
|
||||
}
|
||||
if buf[n-1] == '\n' {
|
||||
n--
|
||||
}
|
||||
ret = append(ret, buf[:n]...)
|
||||
if n < len(buf) {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
return ret, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
// Copyright 2013 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build darwin dragonfly freebsd netbsd openbsd
|
||||
|
||||
package readline
|
||||
|
||||
import "syscall"
|
||||
|
||||
const ioctlReadTermios = syscall.TIOCGETA
|
||||
const ioctlWriteTermios = syscall.TIOCSETA
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
// Copyright 2013 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package readline
|
||||
|
||||
// These constants are declared here, rather than importing
|
||||
// them from the syscall package as some syscall packages, even
|
||||
// on linux, for example gccgo, do not declare them.
|
||||
const ioctlReadTermios = 0x5401 // syscall.TCGETS
|
||||
const ioctlWriteTermios = 0x5402 // syscall.TCSETS
|
||||
|
|
@ -0,0 +1,171 @@
|
|||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build windows
|
||||
|
||||
// Package terminal provides support functions for dealing with terminals, as
|
||||
// commonly found on UNIX systems.
|
||||
//
|
||||
// Putting a terminal into raw mode is the most common requirement:
|
||||
//
|
||||
// oldState, err := terminal.MakeRaw(0)
|
||||
// if err != nil {
|
||||
// panic(err)
|
||||
// }
|
||||
// defer terminal.Restore(0, oldState)
|
||||
package readline
|
||||
|
||||
import (
|
||||
"io"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
const (
|
||||
enableLineInput = 2
|
||||
enableEchoInput = 4
|
||||
enableProcessedInput = 1
|
||||
enableWindowInput = 8
|
||||
enableMouseInput = 16
|
||||
enableInsertMode = 32
|
||||
enableQuickEditMode = 64
|
||||
enableExtendedFlags = 128
|
||||
enableAutoPosition = 256
|
||||
enableProcessedOutput = 1
|
||||
enableWrapAtEolOutput = 2
|
||||
)
|
||||
|
||||
var kernel32 = syscall.NewLazyDLL("kernel32.dll")
|
||||
|
||||
var (
|
||||
procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
|
||||
procSetConsoleMode = kernel32.NewProc("SetConsoleMode")
|
||||
procGetConsoleScreenBufferInfo = kernel32.NewProc("GetConsoleScreenBufferInfo")
|
||||
)
|
||||
|
||||
type (
|
||||
coord struct {
|
||||
x short
|
||||
y short
|
||||
}
|
||||
smallRect struct {
|
||||
left short
|
||||
top short
|
||||
right short
|
||||
bottom short
|
||||
}
|
||||
consoleScreenBufferInfo struct {
|
||||
size coord
|
||||
cursorPosition coord
|
||||
attributes word
|
||||
window smallRect
|
||||
maximumWindowSize coord
|
||||
}
|
||||
)
|
||||
|
||||
type State struct {
|
||||
mode uint32
|
||||
}
|
||||
|
||||
// IsTerminal returns true if the given file descriptor is a terminal.
|
||||
func IsTerminal(fd int) bool {
|
||||
var st uint32
|
||||
r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
|
||||
return r != 0 && e == 0
|
||||
}
|
||||
|
||||
// MakeRaw put the terminal connected to the given file descriptor into raw
|
||||
// mode and returns the previous state of the terminal so that it can be
|
||||
// restored.
|
||||
func MakeRaw(fd int) (*State, error) {
|
||||
var st uint32
|
||||
_, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
|
||||
if e != 0 {
|
||||
return nil, error(e)
|
||||
}
|
||||
raw := st &^ (enableEchoInput | enableProcessedInput | enableLineInput | enableProcessedOutput)
|
||||
_, _, e = syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(raw), 0)
|
||||
if e != 0 {
|
||||
return nil, error(e)
|
||||
}
|
||||
return &State{st}, nil
|
||||
}
|
||||
|
||||
// GetState returns the current state of a terminal which may be useful to
|
||||
// restore the terminal after a signal.
|
||||
func GetState(fd int) (*State, error) {
|
||||
var st uint32
|
||||
_, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
|
||||
if e != 0 {
|
||||
return nil, error(e)
|
||||
}
|
||||
return &State{st}, nil
|
||||
}
|
||||
|
||||
// Restore restores the terminal connected to the given file descriptor to a
|
||||
// previous state.
|
||||
func restoreTerm(fd int, state *State) error {
|
||||
_, _, err := syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(state.mode), 0)
|
||||
return err
|
||||
}
|
||||
|
||||
// GetSize returns the dimensions of the given terminal.
|
||||
func GetSize(fd int) (width, height int, err error) {
|
||||
var info consoleScreenBufferInfo
|
||||
_, _, e := syscall.Syscall(procGetConsoleScreenBufferInfo.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&info)), 0)
|
||||
if e != 0 {
|
||||
return 0, 0, error(e)
|
||||
}
|
||||
return int(info.size.x), int(info.size.y), nil
|
||||
}
|
||||
|
||||
// ReadPassword reads a line of input from a terminal without local echo. This
|
||||
// is commonly used for inputting passwords and other sensitive data. The slice
|
||||
// returned does not include the \n.
|
||||
func ReadPassword(fd int) ([]byte, error) {
|
||||
var st uint32
|
||||
_, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
|
||||
if e != 0 {
|
||||
return nil, error(e)
|
||||
}
|
||||
old := st
|
||||
|
||||
st &^= (enableEchoInput)
|
||||
st |= (enableProcessedInput | enableLineInput | enableProcessedOutput)
|
||||
_, _, e = syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(st), 0)
|
||||
if e != 0 {
|
||||
return nil, error(e)
|
||||
}
|
||||
|
||||
defer func() {
|
||||
syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(old), 0)
|
||||
}()
|
||||
|
||||
var buf [16]byte
|
||||
var ret []byte
|
||||
for {
|
||||
n, err := syscall.Read(syscall.Handle(fd), buf[:])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if n == 0 {
|
||||
if len(ret) == 0 {
|
||||
return nil, io.EOF
|
||||
}
|
||||
break
|
||||
}
|
||||
if buf[n-1] == '\n' {
|
||||
n--
|
||||
}
|
||||
if n > 0 && buf[n-1] == '\r' {
|
||||
n--
|
||||
}
|
||||
ret = append(ret, buf[:n]...)
|
||||
if n < len(buf) {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
return ret, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,215 @@
|
|||
package readline
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"fmt"
|
||||
"io"
|
||||
"strings"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
)
|
||||
|
||||
type Terminal struct {
|
||||
cfg *Config
|
||||
outchan chan rune
|
||||
closed int32
|
||||
stopChan chan struct{}
|
||||
kickChan chan struct{}
|
||||
wg sync.WaitGroup
|
||||
isReading int32
|
||||
sleeping int32
|
||||
|
||||
sizeChan chan string
|
||||
}
|
||||
|
||||
func NewTerminal(cfg *Config) (*Terminal, error) {
|
||||
if err := cfg.Init(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
t := &Terminal{
|
||||
cfg: cfg,
|
||||
kickChan: make(chan struct{}, 1),
|
||||
outchan: make(chan rune),
|
||||
stopChan: make(chan struct{}, 1),
|
||||
sizeChan: make(chan string, 1),
|
||||
}
|
||||
|
||||
go t.ioloop()
|
||||
return t, nil
|
||||
}
|
||||
|
||||
// SleepToResume will sleep myself, and return only if I'm resumed.
|
||||
func (t *Terminal) SleepToResume() {
|
||||
if !atomic.CompareAndSwapInt32(&t.sleeping, 0, 1) {
|
||||
return
|
||||
}
|
||||
defer atomic.StoreInt32(&t.sleeping, 0)
|
||||
|
||||
t.ExitRawMode()
|
||||
ch := WaitForResume()
|
||||
SuspendMe()
|
||||
<-ch
|
||||
t.EnterRawMode()
|
||||
}
|
||||
|
||||
func (t *Terminal) EnterRawMode() (err error) {
|
||||
return t.cfg.FuncMakeRaw()
|
||||
}
|
||||
|
||||
func (t *Terminal) ExitRawMode() (err error) {
|
||||
return t.cfg.FuncExitRaw()
|
||||
}
|
||||
|
||||
func (t *Terminal) Write(b []byte) (int, error) {
|
||||
return t.cfg.Stdout.Write(b)
|
||||
}
|
||||
|
||||
type termSize struct {
|
||||
left int
|
||||
top int
|
||||
}
|
||||
|
||||
func (t *Terminal) GetOffset(f func(offset string)) {
|
||||
go func() {
|
||||
f(<-t.sizeChan)
|
||||
}()
|
||||
t.Write([]byte("\033[6n"))
|
||||
}
|
||||
|
||||
func (t *Terminal) Print(s string) {
|
||||
fmt.Fprintf(t.cfg.Stdout, "%s", s)
|
||||
}
|
||||
|
||||
func (t *Terminal) PrintRune(r rune) {
|
||||
fmt.Fprintf(t.cfg.Stdout, "%c", r)
|
||||
}
|
||||
|
||||
func (t *Terminal) Readline() *Operation {
|
||||
return NewOperation(t, t.cfg)
|
||||
}
|
||||
|
||||
// return rune(0) if meet EOF
|
||||
func (t *Terminal) ReadRune() rune {
|
||||
ch, ok := <-t.outchan
|
||||
if !ok {
|
||||
return rune(0)
|
||||
}
|
||||
return ch
|
||||
}
|
||||
|
||||
func (t *Terminal) IsReading() bool {
|
||||
return atomic.LoadInt32(&t.isReading) == 1
|
||||
}
|
||||
|
||||
func (t *Terminal) KickRead() {
|
||||
select {
|
||||
case t.kickChan <- struct{}{}:
|
||||
default:
|
||||
}
|
||||
}
|
||||
|
||||
func (t *Terminal) ioloop() {
|
||||
t.wg.Add(1)
|
||||
defer func() {
|
||||
t.wg.Done()
|
||||
close(t.outchan)
|
||||
}()
|
||||
|
||||
var (
|
||||
isEscape bool
|
||||
isEscapeEx bool
|
||||
expectNextChar bool
|
||||
)
|
||||
|
||||
buf := bufio.NewReader(t.cfg.Stdin)
|
||||
for {
|
||||
if !expectNextChar {
|
||||
atomic.StoreInt32(&t.isReading, 0)
|
||||
select {
|
||||
case <-t.kickChan:
|
||||
atomic.StoreInt32(&t.isReading, 1)
|
||||
case <-t.stopChan:
|
||||
return
|
||||
}
|
||||
}
|
||||
expectNextChar = false
|
||||
r, _, err := buf.ReadRune()
|
||||
if err != nil {
|
||||
if strings.Contains(err.Error(), "interrupted system call") {
|
||||
expectNextChar = true
|
||||
continue
|
||||
}
|
||||
break
|
||||
}
|
||||
|
||||
if isEscape {
|
||||
isEscape = false
|
||||
if r == CharEscapeEx {
|
||||
expectNextChar = true
|
||||
isEscapeEx = true
|
||||
continue
|
||||
}
|
||||
r = escapeKey(r, buf)
|
||||
} else if isEscapeEx {
|
||||
isEscapeEx = false
|
||||
if key := readEscKey(r, buf); key != nil {
|
||||
r = escapeExKey(key)
|
||||
// offset
|
||||
if key.typ == 'R' {
|
||||
if _, _, ok := key.Get2(); ok {
|
||||
select {
|
||||
case t.sizeChan <- key.attr:
|
||||
default:
|
||||
}
|
||||
}
|
||||
expectNextChar = true
|
||||
continue
|
||||
}
|
||||
}
|
||||
if r == 0 {
|
||||
expectNextChar = true
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
expectNextChar = true
|
||||
switch r {
|
||||
case CharEsc:
|
||||
if t.cfg.VimMode {
|
||||
t.outchan <- r
|
||||
break
|
||||
}
|
||||
isEscape = true
|
||||
case CharInterrupt, CharEnter, CharCtrlJ, CharDelete:
|
||||
expectNextChar = false
|
||||
fallthrough
|
||||
default:
|
||||
t.outchan <- r
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func (t *Terminal) Bell() {
|
||||
fmt.Fprintf(t, "%c", CharBell)
|
||||
}
|
||||
|
||||
func (t *Terminal) Close() error {
|
||||
if atomic.SwapInt32(&t.closed, 1) != 0 {
|
||||
return nil
|
||||
}
|
||||
if closer, ok := t.cfg.Stdin.(io.Closer); ok {
|
||||
closer.Close()
|
||||
}
|
||||
close(t.stopChan)
|
||||
t.wg.Wait()
|
||||
return t.ExitRawMode()
|
||||
}
|
||||
|
||||
func (t *Terminal) SetConfig(c *Config) error {
|
||||
if err := c.Init(); err != nil {
|
||||
return err
|
||||
}
|
||||
t.cfg = c
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,274 @@
|
|||
package readline
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"container/list"
|
||||
"fmt"
|
||||
"os"
|
||||
"strconv"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
"unicode"
|
||||
)
|
||||
|
||||
var (
|
||||
isWindows = false
|
||||
)
|
||||
|
||||
const (
|
||||
CharLineStart = 1
|
||||
CharBackward = 2
|
||||
CharInterrupt = 3
|
||||
CharDelete = 4
|
||||
CharLineEnd = 5
|
||||
CharForward = 6
|
||||
CharBell = 7
|
||||
CharCtrlH = 8
|
||||
CharTab = 9
|
||||
CharCtrlJ = 10
|
||||
CharKill = 11
|
||||
CharCtrlL = 12
|
||||
CharEnter = 13
|
||||
CharNext = 14
|
||||
CharPrev = 16
|
||||
CharBckSearch = 18
|
||||
CharFwdSearch = 19
|
||||
CharTranspose = 20
|
||||
CharCtrlU = 21
|
||||
CharCtrlW = 23
|
||||
CharCtrlZ = 26
|
||||
CharEsc = 27
|
||||
CharEscapeEx = 91
|
||||
CharBackspace = 127
|
||||
)
|
||||
|
||||
const (
|
||||
MetaBackward rune = -iota - 1
|
||||
MetaForward
|
||||
MetaDelete
|
||||
MetaBackspace
|
||||
MetaTranspose
|
||||
)
|
||||
|
||||
// WaitForResume need to call before current process got suspend.
|
||||
// It will run a ticker until a long duration is occurs,
|
||||
// which means this process is resumed.
|
||||
func WaitForResume() chan struct{} {
|
||||
ch := make(chan struct{})
|
||||
var wg sync.WaitGroup
|
||||
wg.Add(1)
|
||||
go func() {
|
||||
ticker := time.NewTicker(10 * time.Millisecond)
|
||||
t := time.Now()
|
||||
wg.Done()
|
||||
for {
|
||||
now := <-ticker.C
|
||||
if now.Sub(t) > 100*time.Millisecond {
|
||||
break
|
||||
}
|
||||
t = now
|
||||
}
|
||||
ticker.Stop()
|
||||
ch <- struct{}{}
|
||||
}()
|
||||
wg.Wait()
|
||||
return ch
|
||||
}
|
||||
|
||||
func Restore(fd int, state *State) error {
|
||||
err := restoreTerm(fd, state)
|
||||
if err != nil {
|
||||
// errno 0 means everything is ok :)
|
||||
if err.Error() == "errno 0" {
|
||||
err = nil
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func IsPrintable(key rune) bool {
|
||||
isInSurrogateArea := key >= 0xd800 && key <= 0xdbff
|
||||
return key >= 32 && !isInSurrogateArea
|
||||
}
|
||||
|
||||
// translate Esc[X
|
||||
func escapeExKey(key *escapeKeyPair) rune {
|
||||
var r rune
|
||||
switch key.typ {
|
||||
case 'D':
|
||||
r = CharBackward
|
||||
case 'C':
|
||||
r = CharForward
|
||||
case 'A':
|
||||
r = CharPrev
|
||||
case 'B':
|
||||
r = CharNext
|
||||
case 'H':
|
||||
r = CharLineStart
|
||||
case 'F':
|
||||
r = CharLineEnd
|
||||
case '~':
|
||||
if key.attr == "3" {
|
||||
r = CharDelete
|
||||
}
|
||||
default:
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
type escapeKeyPair struct {
|
||||
attr string
|
||||
typ rune
|
||||
}
|
||||
|
||||
func (e *escapeKeyPair) Get2() (int, int, bool) {
|
||||
sp := strings.Split(e.attr, ";")
|
||||
if len(sp) < 2 {
|
||||
return -1, -1, false
|
||||
}
|
||||
s1, err := strconv.Atoi(sp[0])
|
||||
if err != nil {
|
||||
return -1, -1, false
|
||||
}
|
||||
s2, err := strconv.Atoi(sp[1])
|
||||
if err != nil {
|
||||
return -1, -1, false
|
||||
}
|
||||
return s1, s2, true
|
||||
}
|
||||
|
||||
func readEscKey(r rune, reader *bufio.Reader) *escapeKeyPair {
|
||||
p := escapeKeyPair{}
|
||||
buf := bytes.NewBuffer(nil)
|
||||
for {
|
||||
if r == ';' {
|
||||
} else if unicode.IsNumber(r) {
|
||||
} else {
|
||||
p.typ = r
|
||||
break
|
||||
}
|
||||
buf.WriteRune(r)
|
||||
r, _, _ = reader.ReadRune()
|
||||
}
|
||||
p.attr = buf.String()
|
||||
return &p
|
||||
}
|
||||
|
||||
// translate EscX to Meta+X
|
||||
func escapeKey(r rune, reader *bufio.Reader) rune {
|
||||
switch r {
|
||||
case 'b':
|
||||
r = MetaBackward
|
||||
case 'f':
|
||||
r = MetaForward
|
||||
case 'd':
|
||||
r = MetaDelete
|
||||
case CharTranspose:
|
||||
r = MetaTranspose
|
||||
case CharBackspace:
|
||||
r = MetaBackspace
|
||||
case 'O':
|
||||
d, _, _ := reader.ReadRune()
|
||||
switch d {
|
||||
case 'H':
|
||||
r = CharLineStart
|
||||
case 'F':
|
||||
r = CharLineEnd
|
||||
default:
|
||||
reader.UnreadRune()
|
||||
}
|
||||
case CharEsc:
|
||||
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
func SplitByLine(start, screenWidth int, rs []rune) []string {
|
||||
var ret []string
|
||||
buf := bytes.NewBuffer(nil)
|
||||
currentWidth := start
|
||||
for _, r := range rs {
|
||||
w := runes.Width(r)
|
||||
currentWidth += w
|
||||
buf.WriteRune(r)
|
||||
if currentWidth >= screenWidth {
|
||||
ret = append(ret, buf.String())
|
||||
buf.Reset()
|
||||
currentWidth = 0
|
||||
}
|
||||
}
|
||||
ret = append(ret, buf.String())
|
||||
return ret
|
||||
}
|
||||
|
||||
// calculate how many lines for N character
|
||||
func LineCount(screenWidth, w int) int {
|
||||
r := w / screenWidth
|
||||
if w%screenWidth != 0 {
|
||||
r++
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
func IsWordBreak(i rune) bool {
|
||||
switch {
|
||||
case i >= 'a' && i <= 'z':
|
||||
case i >= 'A' && i <= 'Z':
|
||||
case i >= '0' && i <= '9':
|
||||
default:
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func GetInt(s []string, def int) int {
|
||||
if len(s) == 0 {
|
||||
return def
|
||||
}
|
||||
c, err := strconv.Atoi(s[0])
|
||||
if err != nil {
|
||||
return def
|
||||
}
|
||||
return c
|
||||
}
|
||||
|
||||
type RawMode struct {
|
||||
state *State
|
||||
}
|
||||
|
||||
func (r *RawMode) Enter() (err error) {
|
||||
r.state, err = MakeRaw(GetStdin())
|
||||
return err
|
||||
}
|
||||
|
||||
func (r *RawMode) Exit() error {
|
||||
if r.state == nil {
|
||||
return nil
|
||||
}
|
||||
return Restore(GetStdin(), r.state)
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
func sleep(n int) {
|
||||
Debug(n)
|
||||
time.Sleep(2000 * time.Millisecond)
|
||||
}
|
||||
|
||||
// print a linked list to Debug()
|
||||
func debugList(l *list.List) {
|
||||
idx := 0
|
||||
for e := l.Front(); e != nil; e = e.Next() {
|
||||
Debug(idx, fmt.Sprintf("%+v", e.Value))
|
||||
idx++
|
||||
}
|
||||
}
|
||||
|
||||
// append log info to another file
|
||||
func Debug(o ...interface{}) {
|
||||
f, _ := os.OpenFile("debug.tmp", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
|
||||
fmt.Fprintln(f, o...)
|
||||
f.Close()
|
||||
}
|
||||
|
|
@ -0,0 +1,90 @@
|
|||
// +build darwin dragonfly freebsd linux,!appengine netbsd openbsd
|
||||
|
||||
package readline
|
||||
|
||||
import (
|
||||
"io"
|
||||
"os"
|
||||
"os/signal"
|
||||
"sync"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
type winsize struct {
|
||||
Row uint16
|
||||
Col uint16
|
||||
Xpixel uint16
|
||||
Ypixel uint16
|
||||
}
|
||||
|
||||
// SuspendMe use to send suspend signal to myself, when we in the raw mode.
|
||||
// For OSX it need to send to parent's pid
|
||||
// For Linux it need to send to myself
|
||||
func SuspendMe() {
|
||||
p, _ := os.FindProcess(os.Getppid())
|
||||
p.Signal(syscall.SIGTSTP)
|
||||
p, _ = os.FindProcess(os.Getpid())
|
||||
p.Signal(syscall.SIGTSTP)
|
||||
}
|
||||
|
||||
// get width of the terminal
|
||||
func getWidth(stdoutFd int) int {
|
||||
ws := &winsize{}
|
||||
retCode, _, errno := syscall.Syscall(syscall.SYS_IOCTL,
|
||||
uintptr(stdoutFd),
|
||||
uintptr(syscall.TIOCGWINSZ),
|
||||
uintptr(unsafe.Pointer(ws)))
|
||||
|
||||
if int(retCode) == -1 {
|
||||
_ = errno
|
||||
return -1
|
||||
}
|
||||
return int(ws.Col)
|
||||
}
|
||||
|
||||
func GetScreenWidth() int {
|
||||
w := getWidth(syscall.Stdout)
|
||||
if w < 0 {
|
||||
w = getWidth(syscall.Stderr)
|
||||
}
|
||||
return w
|
||||
}
|
||||
|
||||
// ClearScreen clears the console screen
|
||||
func ClearScreen(w io.Writer) (int, error) {
|
||||
return w.Write([]byte("\033[H"))
|
||||
}
|
||||
|
||||
func DefaultIsTerminal() bool {
|
||||
return IsTerminal(syscall.Stdin) && (IsTerminal(syscall.Stdout) || IsTerminal(syscall.Stderr))
|
||||
}
|
||||
|
||||
func GetStdin() int {
|
||||
return syscall.Stdin
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
var (
|
||||
widthChange sync.Once
|
||||
widthChangeCallback func()
|
||||
)
|
||||
|
||||
func DefaultOnWidthChanged(f func()) {
|
||||
widthChangeCallback = f
|
||||
widthChange.Do(func() {
|
||||
ch := make(chan os.Signal, 1)
|
||||
signal.Notify(ch, syscall.SIGWINCH)
|
||||
|
||||
go func() {
|
||||
for {
|
||||
_, ok := <-ch
|
||||
if !ok {
|
||||
break
|
||||
}
|
||||
widthChangeCallback()
|
||||
}
|
||||
}()
|
||||
})
|
||||
}
|
||||
|
|
@ -0,0 +1,41 @@
|
|||
// +build windows
|
||||
|
||||
package readline
|
||||
|
||||
import (
|
||||
"io"
|
||||
"syscall"
|
||||
)
|
||||
|
||||
func SuspendMe() {
|
||||
}
|
||||
|
||||
func GetStdin() int {
|
||||
return int(syscall.Stdin)
|
||||
}
|
||||
|
||||
func init() {
|
||||
isWindows = true
|
||||
}
|
||||
|
||||
// get width of the terminal
|
||||
func GetScreenWidth() int {
|
||||
info, _ := GetConsoleScreenBufferInfo()
|
||||
if info == nil {
|
||||
return -1
|
||||
}
|
||||
return int(info.dwSize.x)
|
||||
}
|
||||
|
||||
// ClearScreen clears the console screen
|
||||
func ClearScreen(_ io.Writer) error {
|
||||
return SetConsoleCursorPosition(&_COORD{0, 0})
|
||||
}
|
||||
|
||||
func DefaultIsTerminal() bool {
|
||||
return true
|
||||
}
|
||||
|
||||
func DefaultOnWidthChanged(func()) {
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,174 @@
|
|||
package readline
|
||||
|
||||
const (
|
||||
VIM_NORMAL = iota
|
||||
VIM_INSERT
|
||||
VIM_VISUAL
|
||||
)
|
||||
|
||||
type opVim struct {
|
||||
cfg *Config
|
||||
op *Operation
|
||||
vimMode int
|
||||
}
|
||||
|
||||
func newVimMode(op *Operation) *opVim {
|
||||
ov := &opVim{
|
||||
cfg: op.cfg,
|
||||
op: op,
|
||||
}
|
||||
ov.SetVimMode(ov.cfg.VimMode)
|
||||
return ov
|
||||
}
|
||||
|
||||
func (o *opVim) SetVimMode(on bool) {
|
||||
if o.cfg.VimMode && !on { // turn off
|
||||
o.ExitVimMode()
|
||||
}
|
||||
o.cfg.VimMode = on
|
||||
o.vimMode = VIM_INSERT
|
||||
}
|
||||
|
||||
func (o *opVim) ExitVimMode() {
|
||||
o.vimMode = VIM_INSERT
|
||||
}
|
||||
|
||||
func (o *opVim) IsEnableVimMode() bool {
|
||||
return o.cfg.VimMode
|
||||
}
|
||||
|
||||
func (o *opVim) handleVimNormalMovement(r rune, readNext func() rune) (t rune, handled bool) {
|
||||
rb := o.op.buf
|
||||
handled = true
|
||||
switch r {
|
||||
case 'h':
|
||||
t = CharBackward
|
||||
case 'j':
|
||||
t = CharNext
|
||||
case 'k':
|
||||
t = CharPrev
|
||||
case 'l':
|
||||
t = CharForward
|
||||
case '0', '^':
|
||||
rb.MoveToLineStart()
|
||||
case '$':
|
||||
rb.MoveToLineEnd()
|
||||
case 'x':
|
||||
rb.Delete()
|
||||
if rb.IsCursorInEnd() {
|
||||
rb.MoveBackward()
|
||||
}
|
||||
case 'r':
|
||||
rb.Replace(readNext())
|
||||
case 'd':
|
||||
next := readNext()
|
||||
switch next {
|
||||
case 'd':
|
||||
rb.Erase()
|
||||
case 'w':
|
||||
rb.DeleteWord()
|
||||
case 'h':
|
||||
rb.Backspace()
|
||||
case 'l':
|
||||
rb.Delete()
|
||||
}
|
||||
case 'b', 'B':
|
||||
rb.MoveToPrevWord()
|
||||
case 'w', 'W':
|
||||
rb.MoveToNextWord()
|
||||
case 'e', 'E':
|
||||
rb.MoveToEndWord()
|
||||
case 'f', 'F', 't', 'T':
|
||||
next := readNext()
|
||||
prevChar := r == 't' || r == 'T'
|
||||
reverse := r == 'F' || r == 'T'
|
||||
switch next {
|
||||
case CharEsc:
|
||||
default:
|
||||
rb.MoveTo(next, prevChar, reverse)
|
||||
}
|
||||
default:
|
||||
return r, false
|
||||
}
|
||||
return t, true
|
||||
}
|
||||
|
||||
func (o *opVim) handleVimNormalEnterInsert(r rune, readNext func() rune) (t rune, handled bool) {
|
||||
rb := o.op.buf
|
||||
handled = true
|
||||
switch r {
|
||||
case 'i':
|
||||
case 'I':
|
||||
rb.MoveToLineStart()
|
||||
case 'a':
|
||||
rb.MoveForward()
|
||||
case 'A':
|
||||
rb.MoveToLineEnd()
|
||||
case 's':
|
||||
rb.Delete()
|
||||
case 'S':
|
||||
rb.Erase()
|
||||
case 'c':
|
||||
next := readNext()
|
||||
switch next {
|
||||
case 'c':
|
||||
rb.Erase()
|
||||
case 'w':
|
||||
rb.DeleteWord()
|
||||
case 'h':
|
||||
rb.Backspace()
|
||||
case 'l':
|
||||
rb.Delete()
|
||||
}
|
||||
default:
|
||||
return r, false
|
||||
}
|
||||
|
||||
o.EnterVimInsertMode()
|
||||
return
|
||||
}
|
||||
|
||||
func (o *opVim) HandleVimNormal(r rune, readNext func() rune) (t rune) {
|
||||
switch r {
|
||||
case CharEnter, CharInterrupt:
|
||||
o.ExitVimMode()
|
||||
return r
|
||||
}
|
||||
|
||||
if r, handled := o.handleVimNormalMovement(r, readNext); handled {
|
||||
return r
|
||||
}
|
||||
|
||||
if r, handled := o.handleVimNormalEnterInsert(r, readNext); handled {
|
||||
return r
|
||||
}
|
||||
|
||||
// invalid operation
|
||||
o.op.t.Bell()
|
||||
return 0
|
||||
}
|
||||
|
||||
func (o *opVim) EnterVimInsertMode() {
|
||||
o.vimMode = VIM_INSERT
|
||||
}
|
||||
|
||||
func (o *opVim) ExitVimInsertMode() {
|
||||
o.vimMode = VIM_NORMAL
|
||||
}
|
||||
|
||||
func (o *opVim) HandleVim(r rune, readNext func() rune) rune {
|
||||
if o.vimMode == VIM_NORMAL {
|
||||
return o.HandleVimNormal(r, readNext)
|
||||
}
|
||||
if r == CharEsc {
|
||||
o.ExitVimInsertMode()
|
||||
return 0
|
||||
}
|
||||
|
||||
switch o.vimMode {
|
||||
case VIM_INSERT:
|
||||
return r
|
||||
case VIM_VISUAL:
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
|
@ -0,0 +1,152 @@
|
|||
// +build windows
|
||||
|
||||
package readline
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
var (
|
||||
kernel = NewKernel()
|
||||
stdout = uintptr(syscall.Stdout)
|
||||
stdin = uintptr(syscall.Stdin)
|
||||
)
|
||||
|
||||
type Kernel struct {
|
||||
SetConsoleCursorPosition,
|
||||
SetConsoleTextAttribute,
|
||||
FillConsoleOutputCharacterW,
|
||||
FillConsoleOutputAttribute,
|
||||
ReadConsoleInputW,
|
||||
GetConsoleScreenBufferInfo,
|
||||
GetConsoleCursorInfo,
|
||||
GetStdHandle CallFunc
|
||||
}
|
||||
|
||||
type short int16
|
||||
type word uint16
|
||||
type dword uint32
|
||||
type wchar uint16
|
||||
|
||||
type _COORD struct {
|
||||
x short
|
||||
y short
|
||||
}
|
||||
|
||||
func (c *_COORD) ptr() uintptr {
|
||||
return uintptr(*(*int32)(unsafe.Pointer(c)))
|
||||
}
|
||||
|
||||
const (
|
||||
EVENT_KEY = 0x0001
|
||||
EVENT_MOUSE = 0x0002
|
||||
EVENT_WINDOW_BUFFER_SIZE = 0x0004
|
||||
EVENT_MENU = 0x0008
|
||||
EVENT_FOCUS = 0x0010
|
||||
)
|
||||
|
||||
type _KEY_EVENT_RECORD struct {
|
||||
bKeyDown int32
|
||||
wRepeatCount word
|
||||
wVirtualKeyCode word
|
||||
wVirtualScanCode word
|
||||
unicodeChar wchar
|
||||
dwControlKeyState dword
|
||||
}
|
||||
|
||||
// KEY_EVENT_RECORD KeyEvent;
|
||||
// MOUSE_EVENT_RECORD MouseEvent;
|
||||
// WINDOW_BUFFER_SIZE_RECORD WindowBufferSizeEvent;
|
||||
// MENU_EVENT_RECORD MenuEvent;
|
||||
// FOCUS_EVENT_RECORD FocusEvent;
|
||||
type _INPUT_RECORD struct {
|
||||
EventType word
|
||||
Padding uint16
|
||||
Event [16]byte
|
||||
}
|
||||
|
||||
type _CONSOLE_SCREEN_BUFFER_INFO struct {
|
||||
dwSize _COORD
|
||||
dwCursorPosition _COORD
|
||||
wAttributes word
|
||||
srWindow _SMALL_RECT
|
||||
dwMaximumWindowSize _COORD
|
||||
}
|
||||
|
||||
type _SMALL_RECT struct {
|
||||
left short
|
||||
top short
|
||||
right short
|
||||
bottom short
|
||||
}
|
||||
|
||||
type _CONSOLE_CURSOR_INFO struct {
|
||||
dwSize dword
|
||||
bVisible bool
|
||||
}
|
||||
|
||||
type CallFunc func(u ...uintptr) error
|
||||
|
||||
func NewKernel() *Kernel {
|
||||
k := &Kernel{}
|
||||
kernel32 := syscall.NewLazyDLL("kernel32.dll")
|
||||
v := reflect.ValueOf(k).Elem()
|
||||
t := v.Type()
|
||||
for i := 0; i < t.NumField(); i++ {
|
||||
name := t.Field(i).Name
|
||||
f := kernel32.NewProc(name)
|
||||
v.Field(i).Set(reflect.ValueOf(k.Wrap(f)))
|
||||
}
|
||||
return k
|
||||
}
|
||||
|
||||
func (k *Kernel) Wrap(p *syscall.LazyProc) CallFunc {
|
||||
return func(args ...uintptr) error {
|
||||
var r0 uintptr
|
||||
var e1 syscall.Errno
|
||||
size := uintptr(len(args))
|
||||
if len(args) <= 3 {
|
||||
buf := make([]uintptr, 3)
|
||||
copy(buf, args)
|
||||
r0, _, e1 = syscall.Syscall(p.Addr(), size,
|
||||
buf[0], buf[1], buf[2])
|
||||
} else {
|
||||
buf := make([]uintptr, 6)
|
||||
copy(buf, args)
|
||||
r0, _, e1 = syscall.Syscall6(p.Addr(), size,
|
||||
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5],
|
||||
)
|
||||
}
|
||||
|
||||
if int(r0) == 0 {
|
||||
if e1 != 0 {
|
||||
return error(e1)
|
||||
} else {
|
||||
return syscall.EINVAL
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func GetConsoleScreenBufferInfo() (*_CONSOLE_SCREEN_BUFFER_INFO, error) {
|
||||
t := new(_CONSOLE_SCREEN_BUFFER_INFO)
|
||||
err := kernel.GetConsoleScreenBufferInfo(
|
||||
stdout,
|
||||
uintptr(unsafe.Pointer(t)),
|
||||
)
|
||||
return t, err
|
||||
}
|
||||
|
||||
func GetConsoleCursorInfo() (*_CONSOLE_CURSOR_INFO, error) {
|
||||
t := new(_CONSOLE_CURSOR_INFO)
|
||||
err := kernel.GetConsoleCursorInfo(stdout, uintptr(unsafe.Pointer(t)))
|
||||
return t, err
|
||||
}
|
||||
|
||||
func SetConsoleCursorPosition(c *_COORD) error {
|
||||
return kernel.SetConsoleCursorPosition(stdout, c.ptr())
|
||||
}
|
||||
|
|
@ -824,6 +824,12 @@
|
|||
"path": "github.com/cenkalti/backoff",
|
||||
"revision": "4dc77674aceaabba2c7e3da25d4c823edfb73f99"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "sIaADZAnjqXQLRXec+QvQ6ChlYE=",
|
||||
"path": "github.com/chzyer/readline",
|
||||
"revision": "c914be64f07d9998f52bf0d598ec26d457168c0f",
|
||||
"revisionTime": "2016-11-06T04:23:43Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "L0fG0Aej27fMmhJwshFsqgVY4dM=",
|
||||
"path": "github.com/cloudflare/cloudflare-go",
|
||||
|
|
|
|||
Loading…
Reference in New Issue