85 lines
2.3 KiB
JavaScript
85 lines
2.3 KiB
JavaScript
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var parseAttributes = require('./parse-attribs')
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var parseFromString = require('xml-parse-from-string')
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//In some cases element.attribute.nodeName can return
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//all lowercase values.. so we need to map them to the correct
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//case
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var NAME_MAP = {
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scaleh: 'scaleH',
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scalew: 'scaleW',
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stretchh: 'stretchH',
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lineheight: 'lineHeight',
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alphachnl: 'alphaChnl',
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redchnl: 'redChnl',
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greenchnl: 'greenChnl',
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bluechnl: 'blueChnl'
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}
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module.exports = function parse(data) {
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data = data.toString()
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var xmlRoot = parseFromString(data)
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var output = {
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pages: [],
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chars: [],
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kernings: []
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}
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//get config settings
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;['info', 'common'].forEach(function(key) {
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var element = xmlRoot.getElementsByTagName(key)[0]
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if (element)
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output[key] = parseAttributes(getAttribs(element))
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})
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//get page info
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var pageRoot = xmlRoot.getElementsByTagName('pages')[0]
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if (!pageRoot)
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throw new Error('malformed file -- no <pages> element')
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var pages = pageRoot.getElementsByTagName('page')
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for (var i=0; i<pages.length; i++) {
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var p = pages[i]
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var id = parseInt(p.getAttribute('id'), 10)
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var file = p.getAttribute('file')
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if (isNaN(id))
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throw new Error('malformed file -- page "id" attribute is NaN')
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if (!file)
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throw new Error('malformed file -- needs page "file" attribute')
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output.pages[parseInt(id, 10)] = file
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}
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//get kernings / chars
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;['chars', 'kernings'].forEach(function(key) {
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var element = xmlRoot.getElementsByTagName(key)[0]
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if (!element)
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return
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var childTag = key.substring(0, key.length-1)
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var children = element.getElementsByTagName(childTag)
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for (var i=0; i<children.length; i++) {
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var child = children[i]
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output[key].push(parseAttributes(getAttribs(child)))
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}
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})
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return output
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}
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function getAttribs(element) {
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var attribs = getAttribList(element)
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return attribs.reduce(function(dict, attrib) {
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var key = mapName(attrib.nodeName)
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dict[key] = attrib.nodeValue
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return dict
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}, {})
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}
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function getAttribList(element) {
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//IE8+ and modern browsers
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var attribs = []
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for (var i=0; i<element.attributes.length; i++)
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attribs.push(element.attributes[i])
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return attribs
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}
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function mapName(nodeName) {
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return NAME_MAP[nodeName.toLowerCase()] || nodeName
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}
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