222 lines
5.8 KiB
JavaScript
222 lines
5.8 KiB
JavaScript
/**
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* Credits:
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* - SVG Processing from the NYTimes svg-crowbar, under an MIT license
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* https://github.com/NYTimes/svg-crowbar
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* - Thanks to the grunticon project for some guidance
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* https://github.com/filamentgroup/grunticon
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*/
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phantom.onError = function(msg, trace) {
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var msgStack = ['PHANTOM ERROR: ' + msg]
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if (trace && trace.length) {
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msgStack.push('TRACE:')
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trace.forEach(function(t) {
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msgStack.push(
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' -> '
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+ (t.file || t.sourceURL)
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+ ': '
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+ t.line
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+ (t.function ? ' (in function ' + t.function +')' : '')
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)
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})
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}
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system.stderr.write(msgStack.join('\n'))
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phantom.exit(1)
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}
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var system = require('system')
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, fs = require('fs')
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, webpage = require('webpage')
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var page = webpage.create()
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, files = phantom.args.slice(5, phantom.args.length)
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, options = {
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outputDir: phantom.args[0]
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, png: phantom.args[1] === 'true' ? true : false
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, svg: phantom.args[2] === 'true' ? true : false
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, sequenceConfig: phantom.args[3]
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, verbose: phantom.args[4] === 'true' ? true : false
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}
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, log = logger(options.verbose)
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page.content = [
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'<html>'
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, '<head>'
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, '<style type="text/css">'
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, '* { margin: 0; padding: 0; }'
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, '</style>'
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, '</head>'
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, '<body>'
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, '</body>'
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, '</html>'
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].join('\n')
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page.injectJs('../dist/mermaid.full.js')
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page.onConsoleMessage = function(msg, lineNum, sourceId) {
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console.log('CONSOLE: ' + msg + ' (from line #' + lineNum + ' in "' + sourceId + '")');
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};
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files.forEach(function(file) {
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var contents = fs.read(file)
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, filename = file.split(fs.separator).slice(-1)
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, oParser = new DOMParser()
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, oDOM
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, svgContent
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, allElements
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// this JS is executed in this statement is sandboxed, even though it doesn't
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// look like it. we need to serialize then unserialize the svgContent that's
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// taken from the DOM
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svgContent = page.evaluate(executeInPage, {
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contents: contents,
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sequenceConfig: options.sequenceConfig
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})
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oDOM = oParser.parseFromString(svgContent, "text/xml")
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resolveSVGElement(oDOM.firstChild)
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// traverse the SVG, and replace all foreignObject elements
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// can be removed when https://github.com/knsv/mermaid/issues/58 is resolved
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allElements = traverse(oDOM)
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for (var i = 0, len = allElements.length; i < len; i++) {
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resolveForeignObjects(allElements[i])
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}
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if (options.png) {
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page.viewportSize = {
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width: ~~oDOM.documentElement.attributes.getNamedItem('width').value
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, height: ~~oDOM.documentElement.attributes.getNamedItem('height').value
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}
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page.render(options.outputDir + fs.separator + filename + '.png')
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log('saved png: ' + filename + '.png')
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}
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if (options.svg) {
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var serialize = new XMLSerializer()
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fs.write(
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options.outputDir + fs.separator + filename + '.svg'
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, serialize.serializeToString(oDOM)
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, 'w'
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)
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log('saved svg: ' + filename + '.svg')
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}
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})
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phantom.exit()
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function logger(_verbose) {
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var verbose = _verbose
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return function(_message, _level) {
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var level = level
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, message = _message
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, log
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log = level === 'error' ? system.stderr : system.stdout
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if (verbose) {
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log.write(message + '\n')
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}
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}
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}
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function traverse(obj){
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var tree = []
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tree.push(obj)
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visit(obj)
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function visit(node) {
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if (node && node.hasChildNodes()) {
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var child = node.firstChild
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while (child) {
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if (child.nodeType === 1 && child.nodeName != 'SCRIPT'){
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tree.push(child)
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visit(child)
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}
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child = child.nextSibling
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}
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}
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}
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return tree
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}
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function resolveSVGElement(element) {
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var prefix = {
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xmlns: "http://www.w3.org/2000/xmlns/"
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, xlink: "http://www.w3.org/1999/xlink"
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, svg: "http://www.w3.org/2000/svg"
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}
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, doctype = '<!DOCTYPE svg:svg PUBLIC'
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+ ' "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"'
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+ ' "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
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element.setAttribute("version", "1.1")
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// removing attributes so they aren't doubled up
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element.removeAttribute("xmlns")
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element.removeAttribute("xlink")
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// These are needed for the svg
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if (!element.hasAttributeNS(prefix.xmlns, "xmlns")) {
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element.setAttributeNS(prefix.xmlns, "xmlns", prefix.svg)
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}
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if (!element.hasAttributeNS(prefix.xmlns, "xmlns:xlink")) {
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element.setAttributeNS(prefix.xmlns, "xmlns:xlink", prefix.xlink)
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}
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}
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function resolveForeignObjects(element) {
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var children
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, textElement
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, textSpan
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if (element.tagName === 'foreignObject') {
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textElement = document.createElement('text')
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textSpan = document.createElement('tspan')
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textSpan.setAttribute(
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'style'
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, 'font-size: 11.5pt; font-family: "sans-serif";'
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)
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textSpan.setAttribute('x', 0)
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textSpan.setAttribute('y', 14.5)
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textSpan.textContent = element.textContent
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textElement.appendChild(textSpan)
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element.parentElement.appendChild(textElement)
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element.parentElement.removeChild(element)
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}
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}
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// The sandboxed function that's executed in-page by phantom
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function executeInPage(data) {
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var xmlSerializer = new XMLSerializer()
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, contents = data.contents
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, sequenceConfig = data.sequenceConfig
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, toRemove
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, el
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, elContent
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, svg
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, svgValue
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toRemove = document.getElementsByClassName('mermaid')
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if (toRemove && toRemove.length) {
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for (var i = 0, len = toRemove.length; i < len; i++) {
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toRemove[i].parentNode.removeChild(toRemove[i])
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}
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}
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el = document.createElement("div")
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el.className = 'mermaid'
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elContent = document.createTextNode(contents)
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el.appendChild(elContent)
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document.body.appendChild(el)
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mermaid.init(sequenceConfig)
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svg = document.querySelector('svg')
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svgValue = xmlSerializer.serializeToString(svg)
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return svgValue
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}
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