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index.js
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index.js
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'use strict';
var fs = require('fs'),
_ = require('underscore'),
elements = require(__dirname + '/objects/index'),
dxfParser = require('dxf-parsing').Parser;
var Parser = function Parser() {};
/**
* Convert Svg file into Svg object
* @param {object} svg xml2js object
* @param {function} callback Callback function
*/
Parser.convertXml = function convertXml(svg, callback) {
if(svg == null || typeof svg.svg == 'undefined' || svg.svg == null){
callback(new Error("Your SVG is empty or invalid"));
return;
}
var elements = Parser.parseXmlNode(svg.svg);
callback(null, elements);
};
/**
* Convert JSON file into Svg object
* @param {object} json json object
* @param {function} callback Callback function
*/
Parser.convertJson = function convertJson(json, callback) {
if(typeof json.elements == 'undefined' || json.elements.length == 0){
callback(new Error("Your SVG is empty or invalid"));
return;
}
var elements = Parser.parseJson(json.elements);
callback(null, elements);
};
/**
* Parse svg possibles nodes : <rect>, <g>, ...
* @param {object} node xml2js node
* @returns {Array} node elements convert to SvgObject type
*/
Parser.parseXmlNode = function parseXmlNode(node) {
var nodes = [];
_.each(node, function (content, index) {
switch (index) {
case 'g' :
nodes = _.union(nodes, Parser.parseXmlGroup(content));
break;
case 'polygon' :
nodes = _.union(nodes, Parser.parseXmlPolygon(content));
break;
case 'polyline' :
nodes = _.union(nodes, Parser.parseXmlPolygon(content, true));
break;
case 'rect' :
nodes = _.union(nodes, Parser.parseXmlRect(content));
break;
case 'text' :
nodes = _.union(nodes, Parser.parseXmlText(content));
break;
case 'image' :
nodes = _.union(nodes, Parser.parseXmlImage(content));
break;
case 'circle' :
nodes = _.union(nodes, Parser.parseXmlCircle(content));
break;
}
});
return nodes;
};
/**
* Parse json elements
* @param {Array} elements xml2js node
* @returns {Array} node elements convert to SvgObject type
*/
Parser.parseJson = function parseJson(elements) {
var nodes = [];
_.each(elements, function (element) {
switch (element.type) {
case 'g' :
nodes.push(Parser.parseJsonGroup(element));
break;
case 'polygon' :
nodes.push(Parser.parseJsonPolygon(element));
break;
case 'polyline' :
nodes.push(Parser.parseJsonPolygon(element, true));
break;
case 'rect' :
nodes.push(Parser.parseJsonRect(element));
break;
case 'text' :
nodes.push(Parser.parseJsonText(element));
break;
case 'image' :
nodes.push(Parser.parseJsonImage(element));
break;
case 'circle' :
nodes.push(Parser.parseJsonCircle(element));
break;
}
});
return nodes;
};
/**
* Parse Group Elements Array
* @param {Array} array xml2js elements array
* @returns {Array} Groups array
*/
Parser.parseXmlGroup = function parseXmlGroup(array) {
var groups = [];
_.each(array, function (item) {
groups.push(elements.Group.fromNode(item));
});
return groups;
};
/**
* Parse Group json element
* @param {object} elem Group element in JSON format
* @returns {object} Group object
*/
Parser.parseJsonGroup = function parseJsonGroup(elem) {
return elements.Group.fromJson(elem);
};
/**
* Parse Group Elements Array
* @param {Array} array xml2js elements array
* @param {boolean} [isPolyline] true : polyline. false : polygon. (default : false)
* @returns {Array} Polygons array
*/
Parser.parseXmlPolygon = function parseXmlPolygon(array, isPolyline) {
var polygons = [];
_.each(array, function (item) {
polygons.push(elements.Polygon.fromNode(item, isPolyline));
});
return polygons;
};
/**
* Parse Polygon json element
* @param {object} elem Polygon element in JSON format
* @returns {Polygon} Polygon object
*/
Parser.parseJsonPolygon = function parseJsonPolygon(elem) {
return elements.Polygon.fromJson(elem);
};
/**
* Parse Rect Elements Array
* @param {Array} array xml2js elements array
* @returns {Array} Rects array
*/
Parser.parseXmlRect = function parseXmlRect(array) {
var rects = [];
_.each(array, function (item) {
rects.push(elements.Rect.fromNode(item));
});
return rects;
};
/**
* Parse Rect json element
* @param {object} elem Rect element in JSON format
* @returns {object} Rect object
*/
Parser.parseJsonRect = function parseJsonRect(elem) {
return elements.Rect.fromJson(elem);
};
/**
* Parse Text Elements Array
* @param {Array} array xml2js elements array
* @returns {Array} Texts array
*/
Parser.parseXmlText = function parseXmlText(array) {
var texts = [];
_.each(array, function (item) {
texts.push(elements.Text.fromNode(item));
});
return texts;
};
/**
* Parse Text json element
* @param {object} elem Text element in JSON format
* @returns {Text} Text object
*/
Parser.parseJsonText = function (elem) {
return elements.Text.fromJson(elem);
};
/**
* Parse Image Elements Array
* @param {Array} array xml2js elements array
* @returns {Array} Image array
*/
Parser.parseXmlImage = function parseXmlImage(array) {
var images = [];
_.each(array, function (item) {
images.push(elements.Image.fromNode(item));
});
return images;
};
/**
* Parse Image json element
* @param {object} elem Image element in JSON format
* @returns {object} Image object
*/
Parser.parseJsonImage = function parseJsonImage(elem) {
return elements.Image.fromJson(elem);
};
/**
* Parse Circle Elements Array
* @param {Array} array xml2js elements array
* @returns {Array} Circle array
*/
Parser.parseXmlCircle = function parseXmlCircle(array) {
var circles = [];
_.each(array, function (item) {
circles.push(elements.Circle.fromNode(item));
});
return circles;
};
/**
* Parse Circle json element
* @param {object} elem Circle element in JSON format
* @returns {object} Circle object
*/
Parser.parseJsonCircle = function parseJsonCircle(elem) {
return elements.Circle.fromJson(elem);
};
/**
* Convert DXF File to SVG
* @param {object} params Function params
* @param {string} params.path DXF File path
* @param {function} callback Callback Function
*/
Parser.convertDxf = function convertDxf(params, callback) {
dxfParser.toArray(params.path, function (err, tab) {
if (err) {
callback(err);
return;
}
var polygons = dxfParser.getPolygons(tab),
texts = dxfParser.getTexts(tab, true);
callback(null, {
polygons : polygons,
texts : texts,
circles : dxfParser.getCircles(tab, true),
mapping : dxfParser.makeMappings(polygons, texts),
layers : dxfParser.getLayersByEntities(tab, ['text', 'polygon', 'circle']),
parameters : dxfParser.getParameters(tab),
dimensions : dxfParser.getDimensions(polygons)
});
}.bind(this));
};
module.exports = Parser;