106 lines
4.3 KiB
Markdown
106 lines
4.3 KiB
Markdown
[](http://melpa.org/#/plantuml-mode) [](http://stable.melpa.org/#/plantuml-mode)
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# PlantUML mode for Emacs
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<img src="https://raw.githubusercontent.com/skuro/plantuml-mode/master/banner.png"
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alt="plantuml-mode in action" title="Behold the beauty of text-based UML diagrams!" />
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> “Pummel me all you want," I say. "Pummel me to death, in fact. My answers will not change."
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> The Invierno step back, frowning. "You must love her very much," he says, not unkindly.”
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>
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> from [The Bitter Kingdom - Fire and Thorns #3](https://www.goodreads.com/book/show/11431896-the-bitter-kingdom)
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A [PlantUML](http://plantuml.sourceforge.net/) major mode for Emacs.
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# Installation
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Make sure you have [MELPA](http://melpa.org/) enabled in your ``emacs.d``. Then, you can just
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M-x package-install<RET>
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plantuml-mode<RET>
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Also, to enable preview you need to tell `plantuml-mode` where to locate the PlantUML JAR file. By default it will look for it in `~/plantuml.jar`, but you can specify any location with:
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M-x customize-variable<RET>
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plantuml-plantuml-jar-path<RET>
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# Features
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- Syntax highlight
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- Autocompletion
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- Preview of buffer or region
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# Enable the major mode
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You can automatically enable `plantuml-mode` for files with extension `.plantuml` or `plantuml` by adding the following to your `.emacsrc`:
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;; Enable plantuml-mode for PlantUML files
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(add-to-list 'auto-mode-alist '("\\.plantuml\\'" . plantuml-mode))
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(add-to-list 'auto-mode-alist '("\\.plantuml\\'" . plantuml-mode))
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Of course, you can always enable manually the major mode by typing `M-x plantuml-mode` once in the desired PlantUML file buffer.
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# Usage
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You can either tell `plantuml-mode` to autocomplete the word before the cursor by typing `M-x plantuml-complete-symbol`. This will open a popup with all the available completions as found in the list of keywords given by running PlantUML with the `-language` flag.
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To render the PlantUML diagram within Emacs, you can also hit `M-x plantuml-preview`. This will run PlantUML and display the result in the `*PLANTUML-Preview*` buffer. The format used to render the diagram is automagically chosen from what's supported by your Emacs. It will be one of the following, in order of preference:
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- SVG
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- PNG
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- Unicode ASCII art
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The diagram will be either created from the selected region if one is available in the current buffer, or using the whole buffer otherwise.
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## Default key bindings
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The following shortcuts are enabled by default:
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C-c C-c plantuml-preview: renders a PlantUML diagram from the current buffer in the best supported format
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C-u C-c C-c plantuml-preview in other window
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C-u C-u C-c C-c plantuml-preview in other frame
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## Integration with `org-mode`
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You can use `plantuml-mode` to edit PlantUML source snippets within an [`org-mode`](http://orgmode.org/) document. To do so, you need to first register it with the `plantuml` language:
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```
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(add-to-list
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'org-src-lang-modes '("plantuml" . plantuml))
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```
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Then you can edit a `plantuml` code block with `plantuml-mode` by hitting `C-'` while inside of the code block itself:
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```elisp
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#+BEGIN_SRC plantuml
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<hit C-' here to open a plantuml-mode buffer>
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#+END_SRC
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```
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When in the `plantuml-mode` buffer you can then hit again `C-'` to return to the original `org-mode` document.
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# Troubleshooting
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As of `v0.6.2` the following commands have been added to help resolving problems:
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```
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plantuml-enable-debug
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plantuml-disable-debug
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```
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With debug enabled, the actual command used to invoke PlantUML is printed into a buffer called `*PLANTUML Messages*`. You can inspect that buffer to make sure that PlantUML is properly set up, or use it to supply extra information when opening [issues](https://github.com/skuro/plantuml-mode/issues).
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# Credits
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This project stemmed from the great work of [Zhang Weize](http://zhangweize.wordpress.com/2010/09/20/update-plantuml-mode/),
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and the current code still borrows a lot from it.
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Thanks to [Pavel G. Koukoushkin](https://github.com/svargellin) for implementing the preview functionality.
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# License
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Released under the terms of [GPLv2](http://www.gnu.org/licenses/gpl-2.0.html). See [LICENSE.txt](https://github.com/skuro/plantuml-mode/blob/master/LICENSE.txt).
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