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Added: new script 'render-plantuml': renders plantuml text as image in note preview panel

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NikhilWanpal 2018-02-12 23:03:09 +05:30
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render-plantuml/info.json Normal file
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{
"name": "Support for PlantUML in notes",
"identifier": "render-plantuml",
"script": "render-plantuml.qml",
"authors": ["@nikhilw"],
"version": "0.0.1",
"minAppVersion": "17.05.7",
"description" : "This script renders any plantuml text embedded in a note with the language hint, into a uml diagram. It needs node.js (<a href=\"https://nodejs.org/en/download/\">https://nodejs.org/en/download/</a>), java (<a href=\"https://java.com/en/download/\">https://java.com/en/download/</a>) and plantuml (<a href=\"http://plantuml.com/download\">http://plantuml.com/download</a>) to be installed. Install node and java. download the plantuml jar and provide the full path in script settings."
}

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import QtQml 2.0
/**
* This script renders any plantuml text embedded in a note with the language hint, into a uml diagram.
*
* Dependencies:
* Node.js: https://nodejs.org/en/download/
* java: https://java.com/en/download/
* plantuml: http://plantuml.com/download
*
* Install node and java. download the plantuml jar and provide the full path to the script.
*
*/
QtObject {
property string javaExePath;
property string plantumlJarPath;
property string workDir;
// register your settings variables so the user can set them in the script settings
property variant settingsVariables: [
{
"identifier": "javaExePath",
"name": "Path to Java executable",
"description": "Please enter path to your java executable, or just mention the 'java' if it is already on path:",
"type": "file",
"default": "java"
},
{
"identifier": "plantumlJarPath",
"name": "Path to plantuml jar",
"description": "Please enter absolute path to plantuml jar file:",
"type": "file",
"default": "/home/nikhil/softs/plantuml/plantuml.jar"
},
{
"identifier": "workDir",
"name": "Working directory",
"description": "Please enter a path to be used as working directory i.e. temporary directory for file creation:",
"type": "file",
"default": "/tmp"
}
];
/**
* This function is called when the markdown html of a note is generated
*
* It allows you to modify this html
* This is for example called before by the note preview
*
* @param {Note} note - the note object
* @param {string} html - the html that is about to being rendered
* @return {string} the modfied html or an empty string if nothing should be modified
*/
function noteToMarkdownHtmlHook(note, html) {
var matches = html.match(/language-plantuml\"\>([\s\S]*?)<\/pre/gmi);
var index = 0;
html = html.replace(/<pre><code class=\"language-plantuml\"\>([\s\S]*?)<\/pre>/gmi, function(matchedStr, g1) {
var matchedUml = g1.replace(/\n/gi, "\\n");
var filePath = workDir + "/" + note.id + "_" + (++index);
var plantumlFilePath = filePath + ".plantuml";
var params = ["-e", "require('fs').writeFileSync('" + plantumlFilePath + "', \"" + matchedUml + "\", 'utf8');"];
var result = script.startSynchronousProcess("node", params, html);
// script.log(additionalPumlParams);
params = ["-jar", plantumlJarPath, "-o", workDir, " ", plantumlFilePath];
result = script.startSynchronousProcess(javaExePath, params, html); //["-jar", plantumlJarPath, "-o", workDir, filePath]
return "<div><img src=\"file://" + filePath + ".png\" alt=\"Wait for it..\"/></div>" + matchedStr;
});
return html;
}
}
// Future plans:
// TODO: Allow for passingin addtional parameters to plantuml.
// TODO: Allow for replacing the markup in the rendered preview with image instead of keeping both.
// TODO: Optimize image creation by combining img generation in a single java command instead of in a loop.