parser.min.js

(function(root,factory){if(typeof define==="function"&&define.amd){define([],factory)}else if(typeof exports==="object"){module.exports=factory()}else{root.dPathParse=factory()}})(this,function(){"use strict";return function parse(d){var re={command:/\s*([achlmqstvz])/gi,number:/\s*([+-]?\d*\.?\d+(?:e[+-]?\d+)?)/gi,comma:/\s*(?:(,)|\s)/g,flag:/\s*([01])/g};var matchers={number:function(must){return+get("number",must)},"coordinate pair":function(must){var x=get("number",must);if(x===null&&!must)return null;get("comma");var y=get("number",true);return{x:+x,y:+y}},"arc definition":function(must){var radii=matchers["coordinate pair"](must);if(!radii&&!must)return null;get("comma");var rotation=+get("number",true);get("comma",true);var large=!!+get("flag",true);get("comma");var clockwise=!!+get("flag",true);get("comma");var end=matchers["coordinate pair"](true);return{radii:radii,rotation:rotation,large:large,clockwise:clockwise,end:end}}};var index=0;var commands=[];while(index<d.length){var cmd=get("command");var upcmd=cmd.toUpperCase();var relative=cmd!==upcmd;var sequence;switch(upcmd){case"M":sequence=getSequence("coordinate pair").map(function(coords,i){if(i===1)cmd=relative?"l":"L";return makeCommand({end:coords})});break;case"L":case"T":sequence=getSequence("coordinate pair").map(function(coords){return makeCommand({end:coords})});break;case"C":sequence=getSequence("coordinate pair");if(sequence.length%3)throw Error("Expected coordinate pair triplet at position "+index);sequence=sequence.reduce(function(seq,coords,i){var rest=i%3;if(!rest){seq.push(makeCommand({cp1:coords}))}else{var last=seq[seq.length-1];last[rest===1?"cp2":"end"]=coords}return seq},[]);break;case"Q":case"S":sequence=getSequence("coordinate pair");if(sequence.length&1)throw Error("Expected coordinate pair couple at position "+index);sequence=sequence.reduce(function(seq,coords,i){var odd=i&1;if(!odd){seq.push(makeCommand({cp:coords}))}else{var last=seq[seq.length-1];last.end=coords}return seq},[]);break;case"H":case"V":sequence=getSequence("number").map(function(value){return makeCommand({value:value})});break;case"A":sequence=getSequence("arc definition").map(makeCommand);break;case"Z":sequence=[{code:"Z"}];break}commands.push.apply(commands,sequence)}return commands;function makeCommand(obj){obj.code=cmd;obj.relative=relative;return obj}function get(what,must){re[what].lastIndex=index;var res=re[what].exec(d);if(!res||res.index!==index){if(!must)return null;throw Error("Expected "+what+" at position "+index)}index=re[what].lastIndex;return res[1]}function getSequence(what){var sequence=[];var matched;var must=true;while(matched=matchers[what](must)){sequence.push(matched);must=!!get("comma")}return sequence}}});
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