pandoc-plantuml-filter

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Pandoc filter for PlantUML code blocks

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# pandoc-plantuml-filter

Pandoc filter which converts PlantUML code blocks to PlantUML images.

````
```plantuml
Alice -> Bob: Authentication Request
Bob --> Alice: Authentication Response

Alice -> Bob: Another authentication Request
Alice <-- Bob: another authentication Response
```
````

## Usage

Install it with pip:

```
pip install pandoc-plantuml-filter
```

And use it like any other pandoc filter:

```
pandoc tests/sample.md -o sample.pdf --filter pandoc-plantuml
```

The PlantUML binary must be in your `$PATH` or can be set with the
`PLANTUML_BIN` environment variable.

### Additional parameters

You could pass additional parameters into `plantuml` filter which will be processed as picture's options:

````
```{ .plantuml height=50% plantuml-filename=test.png }
Alice -> Bob: Authentication Request
Bob --> Alice: Authentication Response
```
````

The `plantuml-filename` parameter create a symlink for the destination picture, which could be used in the same file as an image directly.

### Control the output file-type

The generated file-type can be controlled via the file metadata:

```
---
plantuml-format: svg
---
```

Or directly via the cli `--metadata` argument.

```
pandoc tests/sample.md -o sample.pdf --filter pandoc-plantuml --metadata=plantuml-format=svg
```

## But there is ...

There are a few other filters trying to convert PlantUML code blocks however
they all failed for me.

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