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shp.js
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shp.js
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!function(e){if("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.shp=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
var promise = _dereq_('lie');
function binaryAjax(url){
return promise(function(resolve,reject){
var type = url.slice(-3);
var ajax = new XMLHttpRequest();
ajax.open("GET",url,true);
if(type !== 'prj'){
ajax.responseType='arraybuffer';
}
ajax.addEventListener("load",function(){
if(ajax.status>399){
if(type==='prj'){
return resolve(false);
}else{
return reject(new Error(ajax.status));
}
}
resolve(ajax.response);
}, false);
ajax.send();
});
}
module.exports = binaryAjax;
},{"lie":31}],2:[function(_dereq_,module,exports){
var proj4 = _dereq_('proj4');
var unzip = _dereq_('./unzip');
var binaryAjax = _dereq_('./binaryajax');
var all = _dereq_('lie-all');
var parseShp = _dereq_('./parseShp');
var parseDbf = _dereq_('parsedbf');
var promise = _dereq_('lie');
function shp(base, whiteList) {
return shp.getShapefile(base, whiteList);
}
shp.combine = function(arr) {
var out = {};
out.type = "FeatureCollection";
out.features = [];
var i = 0;
var len = arr[0].length;
while (i < len) {
out.features.push({
"type": "Feature",
"geometry": arr[0][i],
"properties": arr[1][i]
});
i++;
}
return out;
};
shp.parseZip = function(buffer, whiteList) {
var key;
var zip = unzip(buffer);
var names = [];
whiteList = whiteList || [];
for (key in zip) {
if (key.slice(-3).toLowerCase() === "shp") {
names.push(key.slice(0, - 4));
}
else if (key.slice(-3).toLowerCase() === "dbf") {
zip[key] = parseDbf(zip[key]);
}
else if (key.slice(-3).toLowerCase() === "prj") {
zip[key] = proj4(zip[key]);
}
else if (key.slice(-4).toLowerCase() === "json" || whiteList.indexOf(key.split('.').pop()) > -1) {
names.push(key);
}
}
if (!names.length) {
throw new Error('no layers founds');
}
var geojson = names.map(function(name) {
var parsed;
if (name.slice(-4).toLowerCase() === "json") {
parsed = JSON.parse(zip[name]);
parsed.fileName = name.slice(0, name.lastIndexOf('.'));
}
else if (whiteList.indexOf(name.slice(name.lastIndexOf('.') + 1)) > -1) {
parsed = zip[name];
parsed.fileName = name;
}
else {
parsed = shp.combine([parseShp(zip[name + '.shp'], zip[name + '.prj']), zip[name + '.dbf']]);
parsed.fileName = name;
}
return parsed;
});
if (geojson.length === 1) {
return geojson[0];
}
else {
return geojson;
}
};
function getZip(base, whiteList) {
return binaryAjax(base).then(function(a) {
return shp.parseZip(a, whiteList);
});
}
shp.getShapefile = function(base, whiteList) {
if (typeof base === 'string') {
if (base.slice(-4) === '.zip') {
return getZip(base, whiteList);
}
else {
return all([
all([
binaryAjax(base + '.shp'),
binaryAjax(base + '.prj')]).then(function(args) {
return parseShp(args[0], args[1] ? proj4(args[1]) : false);
}),
binaryAjax(base + '.dbf').then(parseDbf)
]).then(shp.combine);
}
}
else {
return promise(function(resolve) {
resolve(shp.parseZip(base));
});
}
};
module.exports = shp;
},{"./binaryajax":1,"./parseShp":3,"./unzip":4,"lie":31,"lie-all":25,"parsedbf":41,"proj4":76}],3:[function(_dereq_,module,exports){
function isClockWise(array){
var sum = 0;
var i = 1;
var len = array.length;
var prev,cur;
while(i<len){
prev = cur||array[0];
cur = array[i];
sum += ((cur[0]-prev[0])*(cur[1]+prev[1]));
i++;
}
return sum > 0;
}
function polyReduce(a,b){
if(isClockWise(b)||!a.length){
a.push([b]);
}else{
a[a.length-1].push(b);
}
return a;
}
ParseShp.prototype.parsePoint = function (data){
return {
"type": "Point",
"coordinates":this.parseCoord(data,0)
};
};
ParseShp.prototype.parseZPoint = function (data){
var pointXY = this.parsePoint(data);
pointXY.coordinates.push(this.parseCoord(data,16));
return pointXY;
};
ParseShp.prototype.parsePointArray = function (data,offset,num){
var out = [];
var done = 0;
while(done<num){
out.push(this.parseCoord(data,offset));
offset += 16;
done++;
}
return out;
};
ParseShp.prototype.parseZPointArray = function (data,zOffset,num,coordinates){
var i = 0;
while(i<num){
coordinates[i].push(data.getFloat64(zOffset,true));
i++;
zOffset += 8;
}
return coordinates;
};
ParseShp.prototype.parseArrayGroup = function (data,offset,partOffset,num,tot){
var out = [];
var done = 0;
var curNum,nextNum=0,pointNumber;
while(done<num){
done++;
partOffset += 4;
curNum = nextNum;
if(done===num){
nextNum = tot;
}else{
nextNum = data.getInt32(partOffset,true);
}
pointNumber = nextNum - curNum;
if(!pointNumber){
continue;
}
out.push(this.parsePointArray(data,offset,pointNumber));
offset += (pointNumber<<4);
}
return out;
};
ParseShp.prototype.parseZArrayGroup = function(data,zOffset,num,coordinates){
var i = 0;
while(i<num){
coordinates[i] = this.parseZPointArray(data,zOffset,coordinates[i].length,coordinates[i]);
zOffset += (coordinates[i].length<<3);
i++;
}
return coordinates;
};
ParseShp.prototype.parseMultiPoint = function (data){
var out = {};
out.bbox = [
data.getFloat64(0,true),
data.getFloat64(8,true),
data.getFloat64(16,true),
data.getFloat64(24,true)
];
var num = data.getInt32(32,true);
var offset = 36;
if(num===1){
out.type = "Point";
out.coordinates = this.parseCoord(data,offset);
}else{
out.type = "MultiPoint";
out.coordinates = this.parsePointArray(data,offset,num);
}
return out;
};
ParseShp.prototype.parseZMultiPoint = function(data){
var geoJson = this.parseMultiPoint(data);
var num;
if(geoJson.type === "Point"){
geoJson.coordinates.push(data.getFloat64(72,true));
return geoJson;
}else{
num = geoJson.coordinates.length;
}
var zOffset = 56 + (num<<4);
geoJson.coordinates = this.parseZPointArray(data,zOffset,num,geoJson.coordinates);
return geoJson;
};
ParseShp.prototype.parsePolyline = function (data){
var out = {};
out.bbox = [
data.getFloat64(0,true),
data.getFloat64(8,true),
data.getFloat64(16,true),
data.getFloat64(24,true)
];
var numParts = data.getInt32(32,true);
var num = data.getInt32(36,true);
var offset,partOffset;
if(numParts === 1){
out.type = "LineString";
offset = 44;
out.coordinates = this.parsePointArray(data,offset,num);
}else{
out.type = "MultiLineString";
offset = 40 + (numParts<<2);
partOffset = 40;
out.coordinates = this.parseArrayGroup(data,offset,partOffset,numParts,num);
}
return out;
};
ParseShp.prototype.parseZPolyline = function(data){
var geoJson = this.parsePolyline(data);
var num = geoJson.coordinates.length;
var zOffset = 60 + (num<<4);
if(geoJson.type === "LineString"){
geoJson.coordinates = this.parseZPointArray(data,zOffset,num,geoJson.coordinates);
return geoJson;
}else{
geoJson.coordinates = this.parseZArrayGroup(data,zOffset,num,geoJson.coordinates);
return geoJson;
}
};
ParseShp.prototype.polyFuncs = function (out){
if(out.type === "LineString"){
out.type = "Polygon";
out.coordinates = [out.coordinates];
return out;
}else{
out.coordinates = out.coordinates.reduce(polyReduce,[]);
if(out.coordinates.length === 1){
out.type = "Polygon";
out.coordinates = out.coordinates[0];
return out;
}else{
out.type = "MultiPolygon";
return out;
}
}
};
ParseShp.prototype.parsePolygon = function (data){
return this.polyFuncs(this.parsePolyline(data));
};
ParseShp.prototype.parseZPolygon = function(data){
return this.polyFuncs(this.parseZPolyline(data));
};
var shpFuncObj = {
1:'parsePoint',
3:'parsePolyline',
5:'parsePolygon',
8:'parseMultiPoint',
11:'parseZPoint',
13:'parseZPolyline',
15:'parseZPolygon',
18:'parseZMultiPoint'
};
function makeParseCoord(trans){
if(trans){
return function(data,offset){
return trans.inverse([data.getFloat64(offset,true),data.getFloat64(offset+8,true)]);
};
}else{
return function(data,offset){
return [data.getFloat64(offset,true),data.getFloat64(offset+8,true)];
};
}
}
function ParseShp(buffer,trans){
if(!(this instanceof ParseShp)){
return new ParseShp(buffer,trans);
}
this.buffer = buffer;
this.shpFuncs(trans);
this.rows = this.getRows();
}
ParseShp.prototype.shpFuncs = function (tran){
var num = this.getShpCode();
if(num>20){
num -= 20;
}
if(!(num in shpFuncObj)){
throw new Error("I don't know that shp type");
}
this.parseFunc = this[shpFuncObj[num]];
this.parseCoord = makeParseCoord(tran);
};
ParseShp.prototype.getShpCode = function(){
return this.parseHeader().shpCode;
};
ParseShp.prototype.parseHeader = function (){
var view = new DataView(this.buffer,0,100) ;
return {
length : view.getInt32(6<<2,false),
version : view.getInt32(7<<2,true),
shpCode : view.getInt32(8<<2,true),
bbox : [
view.getFloat64(9<<2,true),
view.getFloat64(11<<2,true),
view.getFloat64(13<<2,true),
view.getFloat64(13<<2,true)
]
};
};
ParseShp.prototype.getRows = function(){
var offset=100;
var len = this.buffer.byteLength;
var out = [];
var current;
while(offset<len){
current = this.getRow(offset);
offset += 8;
offset += current.len;
if(current.type){
out.push(this.parseFunc(current.data));
}
}
return out;
};
ParseShp.prototype.getRow = function(offset){
var view = new DataView(this.buffer,offset,12);
var len = view.getInt32(4,false)<<1;
var data = new DataView(this.buffer,offset+12,len-4);
return {
id:view.getInt32(0,false),
len:len,
data:data,
type:view.getInt32(8,true)
};
};
module.exports = function(buffer,trans){
return ParseShp(buffer,trans).rows;
};
},{}],4:[function(_dereq_,module,exports){
var JSZip = _dereq_('jszip');
module.exports = function(buffer) {
var zip = new JSZip(buffer);
var files = zip.file(/.+/);
var out = {};
files.forEach(function(a) {
if (a.name.slice(-3).toLowerCase() === "shp" || a.name.slice(-3).toLowerCase() === "dbf") {
out[a.name] = a.asText();
out[a.name] = a.asArrayBuffer();
}
else {
out[a.name] = a.asText();
}
});
return out;
};
},{"jszip":13}],5:[function(_dereq_,module,exports){
},{}],6:[function(_dereq_,module,exports){
// shim for using process in browser
var process = module.exports = {};
process.nextTick = (function () {
var canSetImmediate = typeof window !== 'undefined'
&& window.setImmediate;
var canPost = typeof window !== 'undefined'
&& window.postMessage && window.addEventListener
;
if (canSetImmediate) {
return function (f) { return window.setImmediate(f) };
}
if (canPost) {
var queue = [];
window.addEventListener('message', function (ev) {
var source = ev.source;
if ((source === window || source === null) && ev.data === 'process-tick') {
ev.stopPropagation();
if (queue.length > 0) {
var fn = queue.shift();
fn();
}
}
}, true);
return function nextTick(fn) {
queue.push(fn);
window.postMessage('process-tick', '*');
};
}
return function nextTick(fn) {
setTimeout(fn, 0);
};
})();
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.binding = function (name) {
throw new Error('process.binding is not supported');
}
// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
},{}],7:[function(_dereq_,module,exports){
'use strict';
// private property
var _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
// public method for encoding
exports.encode = function(input, utf8) {
var output = "";
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
var i = 0;
while (i < input.length) {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
}
else if (isNaN(chr3)) {
enc4 = 64;
}
output = output + _keyStr.charAt(enc1) + _keyStr.charAt(enc2) + _keyStr.charAt(enc3) + _keyStr.charAt(enc4);
}
return output;
};
// public method for decoding
exports.decode = function(input, utf8) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
while (i < input.length) {
enc1 = _keyStr.indexOf(input.charAt(i++));
enc2 = _keyStr.indexOf(input.charAt(i++));
enc3 = _keyStr.indexOf(input.charAt(i++));
enc4 = _keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
}
return output;
};
},{}],8:[function(_dereq_,module,exports){
'use strict';
function CompressedObject() {
this.compressedSize = 0;
this.uncompressedSize = 0;
this.crc32 = 0;
this.compressionMethod = null;
this.compressedContent = null;
}
CompressedObject.prototype = {
/**
* Return the decompressed content in an unspecified format.
* The format will depend on the decompressor.
* @return {Object} the decompressed content.
*/
getContent: function() {
return null; // see implementation
},
/**
* Return the compressed content in an unspecified format.
* The format will depend on the compressed conten source.
* @return {Object} the compressed content.
*/
getCompressedContent: function() {
return null; // see implementation
}
};
module.exports = CompressedObject;
},{}],9:[function(_dereq_,module,exports){
'use strict';
exports.STORE = {
magic: "\x00\x00",
compress: function(content) {
return content; // no compression
},
uncompress: function(content) {
return content; // no compression
},
compressInputType: null,
uncompressInputType: null
};
exports.DEFLATE = _dereq_('./flate');
},{"./flate":12}],10:[function(_dereq_,module,exports){
'use strict';
var utils = _dereq_('./utils');
function DataReader(data) {
this.data = null; // type : see implementation
this.length = 0;
this.index = 0;
}
DataReader.prototype = {
/**
* Check that the offset will not go too far.
* @param {string} offset the additional offset to check.
* @throws {Error} an Error if the offset is out of bounds.
*/
checkOffset: function(offset) {
this.checkIndex(this.index + offset);
},
/**
* Check that the specifed index will not be too far.
* @param {string} newIndex the index to check.
* @throws {Error} an Error if the index is out of bounds.
*/
checkIndex: function(newIndex) {
if (this.length < newIndex || newIndex < 0) {
throw new Error("End of data reached (data length = " + this.length + ", asked index = " + (newIndex) + "). Corrupted zip ?");
}
},
/**
* Change the index.
* @param {number} newIndex The new index.
* @throws {Error} if the new index is out of the data.
*/
setIndex: function(newIndex) {
this.checkIndex(newIndex);
this.index = newIndex;
},
/**
* Skip the next n bytes.
* @param {number} n the number of bytes to skip.
* @throws {Error} if the new index is out of the data.
*/
skip: function(n) {
this.setIndex(this.index + n);
},
/**
* Get the byte at the specified index.
* @param {number} i the index to use.
* @return {number} a byte.
*/
byteAt: function(i) {
// see implementations
},
/**
* Get the next number with a given byte size.
* @param {number} size the number of bytes to read.
* @return {number} the corresponding number.
*/
readInt: function(size) {
var result = 0,
i;
this.checkOffset(size);
for (i = this.index + size - 1; i >= this.index; i--) {
result = (result << 8) + this.byteAt(i);
}
this.index += size;
return result;
},
/**
* Get the next string with a given byte size.
* @param {number} size the number of bytes to read.
* @return {string} the corresponding string.
*/
readString: function(size) {
return utils.transformTo("string", this.readData(size));
},
/**
* Get raw data without conversion, <size> bytes.
* @param {number} size the number of bytes to read.
* @return {Object} the raw data, implementation specific.
*/
readData: function(size) {
// see implementations
},
/**
* Find the last occurence of a zip signature (4 bytes).
* @param {string} sig the signature to find.
* @return {number} the index of the last occurence, -1 if not found.
*/
lastIndexOfSignature: function(sig) {
// see implementations
},
/**
* Get the next date.
* @return {Date} the date.
*/
readDate: function() {
var dostime = this.readInt(4);
return new Date(
((dostime >> 25) & 0x7f) + 1980, // year
((dostime >> 21) & 0x0f) - 1, // month
(dostime >> 16) & 0x1f, // day
(dostime >> 11) & 0x1f, // hour
(dostime >> 5) & 0x3f, // minute
(dostime & 0x1f) << 1); // second
}
};
module.exports = DataReader;
},{"./utils":20}],11:[function(_dereq_,module,exports){
'use strict';
exports.base64 = false;
exports.binary = false;
exports.dir = false;
exports.date = null;
exports.compression = null;
},{}],12:[function(_dereq_,module,exports){
'use strict';
var USE_TYPEDARRAY = (typeof Uint8Array !== 'undefined') && (typeof Uint16Array !== 'undefined') && (typeof Uint32Array !== 'undefined');
var ZlibDeflate = _dereq_('zlibjs/bin/rawdeflate.min').Zlib;
var ZlibInflate = _dereq_('zlibjs/bin/rawinflate.min').Zlib;
exports.uncompressInputType = USE_TYPEDARRAY ? "uint8array" : "array";
exports.compressInputType = USE_TYPEDARRAY ? "uint8array" : "array";
exports.magic = "\x08\x00";
exports.compress = function(input) {
var deflate = new ZlibDeflate.RawDeflate(input);
return deflate.compress();
};
exports.uncompress = function(input) {
var inflate = new ZlibInflate.RawInflate(input);
return inflate.decompress();
};
},{"zlibjs/bin/rawdeflate.min":23,"zlibjs/bin/rawinflate.min":24}],13:[function(_dereq_,module,exports){
'use strict';
/**
Usage:
zip = new JSZip();
zip.file("hello.txt", "Hello, World!").file("tempfile", "nothing");
zip.folder("images").file("smile.gif", base64Data, {base64: true});
zip.file("Xmas.txt", "Ho ho ho !", {date : new Date("December 25, 2007 00:00:01")});
zip.remove("tempfile");
base64zip = zip.generate();
**/
/**
* Representation a of zip file in js
* @constructor
* @param {String=|ArrayBuffer=|Uint8Array=} data the data to load, if any (optional).
* @param {Object=} options the options for creating this objects (optional).
*/
function JSZip(data, options) {
// object containing the files :
// {
// "folder/" : {...},
// "folder/data.txt" : {...}
// }
this.files = {};
// Where we are in the hierarchy
this.root = "";
if (data) {
this.load(data, options);
}
this.clone = function() {
var newObj = new JSZip();
for (var i in this) {
if (typeof this[i] !== "function") {
newObj[i] = this[i];
}
}
return newObj;
};
}
JSZip.prototype = _dereq_('./object');
JSZip.prototype.load = _dereq_('./load');
JSZip.support = _dereq_('./support');
JSZip.utils = _dereq_('./utils');
JSZip.base64 = _dereq_('./base64');
JSZip.compressions = _dereq_('./compressions');
module.exports = JSZip;
},{"./base64":7,"./compressions":9,"./load":14,"./object":15,"./support":18,"./utils":20}],14:[function(_dereq_,module,exports){
'use strict';
var base64 = _dereq_('./base64');
var ZipEntries = _dereq_('./zipEntries');
module.exports = function(data, options) {
var files, zipEntries, i, input;
options = options || {};
if (options.base64) {
data = base64.decode(data);
}
zipEntries = new ZipEntries(data, options);
files = zipEntries.files;
for (i = 0; i < files.length; i++) {
input = files[i];
this.file(input.fileName, input.decompressed, {
binary: true,
optimizedBinaryString: true,
date: input.date,
dir: input.dir
});
}
return this;
};
},{"./base64":7,"./zipEntries":21}],15:[function(_dereq_,module,exports){
'use strict';
var support = _dereq_('./support');
var utils = _dereq_('./utils');
var signature = _dereq_('./signature');
var defaults = _dereq_('./defaults');
var base64 = _dereq_('./base64');
var compressions = _dereq_('./compressions');
var CompressedObject = _dereq_('./compressedObject');
var nodeBuffer = _dereq_('./nodeBuffer');
/**
* Returns the raw data of a ZipObject, decompress the content if necessary.
* @param {ZipObject} file the file to use.
* @return {String|ArrayBuffer|Uint8Array|Buffer} the data.
*/
var textEncoder, textDecoder;
if (
support.uint8array &&
typeof TextEncoder === "function" &&
typeof TextDecoder === "function"
) {
textEncoder = new TextEncoder("utf-8");
textDecoder = new TextDecoder("utf-8");
}
var getRawData = function(file) {
if (file._data instanceof CompressedObject) {
file._data = file._data.getContent();
file.options.binary = true;
file.options.base64 = false;
if (utils.getTypeOf(file._data) === "uint8array") {
var copy = file._data;
// when reading an arraybuffer, the CompressedObject mechanism will keep it and subarray() a Uint8Array.
// if we request a file in the same format, we might get the same Uint8Array or its ArrayBuffer (the original zip file).
file._data = new Uint8Array(copy.length);
// with an empty Uint8Array, Opera fails with a "Offset larger than array size"
if (copy.length !== 0) {
file._data.set(copy, 0);
}
}
}
return file._data;
};
/**
* Returns the data of a ZipObject in a binary form. If the content is an unicode string, encode it.
* @param {ZipObject} file the file to use.
* @return {String|ArrayBuffer|Uint8Array|Buffer} the data.
*/
var getBinaryData = function(file) {
var result = getRawData(file),
type = utils.getTypeOf(result);
if (type === "string") {
if (!file.options.binary) {
// unicode text !
// unicode string => binary string is a painful process, check if we can avoid it.
if (textEncoder) {
return textEncoder.encode(result);
}
if (support.nodebuffer) {
return nodeBuffer(result, "utf-8");
}
}
return file.asBinary();
}
return result;
};
/**
* Transform this._data into a string.
* @param {function} filter a function String -> String, applied if not null on the result.
* @return {String} the string representing this._data.
*/
var dataToString = function(asUTF8) {
var result = getRawData(this);
if (result === null || typeof result === "undefined") {
return "";
}
// if the data is a base64 string, we decode it before checking the encoding !
if (this.options.base64) {
result = base64.decode(result);
}
if (asUTF8 && this.options.binary) {
// JSZip.prototype.utf8decode supports arrays as input
// skip to array => string step, utf8decode will do it.
result = out.utf8decode(result);
}
else {
// no utf8 transformation, do the array => string step.
result = utils.transformTo("string", result);
}
if (!asUTF8 && !this.options.binary) {
result = out.utf8encode(result);
}
return result;
};
/**
* A simple object representing a file in the zip file.
* @constructor
* @param {string} name the name of the file
* @param {String|ArrayBuffer|Uint8Array|Buffer} data the data
* @param {Object} options the options of the file
*/
var ZipObject = function(name, data, options) {
this.name = name;
this._data = data;
this.options = options;
};
ZipObject.prototype = {
/**
* Return the content as UTF8 string.
* @return {string} the UTF8 string.
*/
asText: function() {
return dataToString.call(this, true);
},
/**
* Returns the binary content.
* @return {string} the content as binary.
*/
asBinary: function() {
return dataToString.call(this, false);
},
/**
* Returns the content as a nodejs Buffer.
* @return {Buffer} the content as a Buffer.
*/
asNodeBuffer: function() {
var result = getBinaryData(this);
return utils.transformTo("nodebuffer", result);
},
/**
* Returns the content as an Uint8Array.
* @return {Uint8Array} the content as an Uint8Array.
*/
asUint8Array: function() {
var result = getBinaryData(this);
return utils.transformTo("uint8array", result);
},
/**
* Returns the content as an ArrayBuffer.
* @return {ArrayBuffer} the content as an ArrayBufer.
*/
asArrayBuffer: function() {
return this.asUint8Array().buffer;
}
};
/**
* Transform an integer into a string in hexadecimal.
* @private
* @param {number} dec the number to convert.
* @param {number} bytes the number of bytes to generate.
* @returns {string} the result.
*/
var decToHex = function(dec, bytes) {
var hex = "",
i;
for (i = 0; i < bytes; i++) {
hex += String.fromCharCode(dec & 0xff);
dec = dec >>> 8;
}
return hex;
};
/**
* Merge the objects passed as parameters into a new one.
* @private
* @param {...Object} var_args All objects to merge.
* @return {Object} a new object with the data of the others.
*/
var extend = function() {
var result = {}, i, attr;
for (i = 0; i < arguments.length; i++) { // arguments is not enumerable in some browsers
for (attr in arguments[i]) {
if (arguments[i].hasOwnProperty(attr) && typeof result[attr] === "undefined") {
result[attr] = arguments[i][attr];
}
}
}
return result;
};
/**
* Transforms the (incomplete) options from the user into the complete
* set of options to create a file.
* @private
* @param {Object} o the options from the user.
* @return {Object} the complete set of options.
*/
var prepareFileAttrs = function(o) {
o = o || {};
if (o.base64 === true && (o.binary === null || o.binary === undefined)) {
o.binary = true;
}
o = extend(o, defaults);
o.date = o.date || new Date();
if (o.compression !== null) o.compression = o.compression.toUpperCase();