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September 28, 2019 19:05
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(function() { | |
var debug = false; | |
var root = this; | |
var EXIF = function(obj) { | |
if (obj instanceof EXIF) return obj; | |
if (!(this instanceof EXIF)) return new EXIF(obj); | |
this.EXIFwrapped = obj; | |
}; | |
if (typeof exports !== 'undefined') { | |
if (typeof module !== 'undefined' && module.exports) { | |
exports = module.exports = EXIF; | |
} | |
exports.EXIF = EXIF; | |
} else { | |
root.EXIF = EXIF; | |
} | |
var ExifTags = EXIF.Tags = { | |
// version tags | |
0x9000 : "ExifVersion", // EXIF version | |
0xA000 : "FlashpixVersion", // Flashpix format version | |
// colorspace tags | |
0xA001 : "ColorSpace", // Color space information tag | |
// image configuration | |
0xA002 : "PixelXDimension", // Valid width of meaningful image | |
0xA003 : "PixelYDimension", // Valid height of meaningful image | |
0x9101 : "ComponentsConfiguration", // Information about channels | |
0x9102 : "CompressedBitsPerPixel", // Compressed bits per pixel | |
// user information | |
0x927C : "MakerNote", // Any desired information written by the manufacturer | |
0x9286 : "UserComment", // Comments by user | |
// related file | |
0xA004 : "RelatedSoundFile", // Name of related sound file | |
// date and time | |
0x9003 : "DateTimeOriginal", // Date and time when the original image was generated | |
0x9004 : "DateTimeDigitized", // Date and time when the image was stored digitally | |
0x9290 : "SubsecTime", // Fractions of seconds for DateTime | |
0x9291 : "SubsecTimeOriginal", // Fractions of seconds for DateTimeOriginal | |
0x9292 : "SubsecTimeDigitized", // Fractions of seconds for DateTimeDigitized | |
// picture-taking conditions | |
0xA300 : "FileSource", // Image source (3 == DSC) | |
// other tags | |
0xA005 : "InteroperabilityIFDPointer", | |
0xA420 : "ImageUniqueID" // Identifier assigned uniquely to each image | |
}; | |
var TiffTags = EXIF.TiffTags = { | |
0x8825 : "GPSInfoIFDPointer", | |
0x0132 : "DateTime", | |
0x010E : "ImageDescription", | |
0x010F : "Make", | |
0x0110 : "Model" | |
}; | |
var GPSTags = EXIF.GPSTags = { | |
0x0000 : "GPSVersionID", | |
0x0001 : "GPSLatitudeRef", | |
0x0002 : "GPSLatitude", | |
0x0003 : "GPSLongitudeRef", | |
0x0004 : "GPSLongitude", | |
0x0005 : "GPSAltitudeRef", | |
0x0006 : "GPSAltitude", | |
0x0007 : "GPSTimeStamp", | |
0x0008 : "GPSSatellites", | |
0x0009 : "GPSStatus", | |
0x000A : "GPSMeasureMode", | |
0x000B : "GPSDOP", | |
0x000C : "GPSSpeedRef", | |
0x000D : "GPSSpeed", | |
0x000E : "GPSTrackRef", | |
0x000F : "GPSTrack", | |
0x0010 : "GPSImgDirectionRef", | |
0x0011 : "GPSImgDirection", | |
0x0012 : "GPSMapDatum", | |
0x0013 : "GPSDestLatitudeRef", | |
0x0014 : "GPSDestLatitude", | |
0x0015 : "GPSDestLongitudeRef", | |
0x0016 : "GPSDestLongitude", | |
0x0017 : "GPSDestBearingRef", | |
0x0018 : "GPSDestBearing", | |
0x0019 : "GPSDestDistanceRef", | |
0x001A : "GPSDestDistance", | |
0x001B : "GPSProcessingMethod", | |
0x001C : "GPSAreaInformation", | |
0x001D : "GPSDateStamp", | |
0x001E : "GPSDifferential" | |
}; | |
// EXIF 2.3 Spec | |
var IFD1Tags = EXIF.IFD1Tags = { | |
}; | |
var StringValues = EXIF.StringValues = { | |
FileSource : { | |
3 : "DSC" | |
} | |
}; | |
function addEvent(element, event, handler) { | |
if (element.addEventListener) { | |
element.addEventListener(event, handler, false); | |
} else if (element.attachEvent) { | |
element.attachEvent("on" + event, handler); | |
} | |
} | |
function imageHasData(img) { | |
return !!(img.exifdata); | |
} | |
function base64ToArrayBuffer(base64, contentType) { | |
contentType = contentType || base64.match(/^data\:([^\;]+)\;base64,/mi)[1] || ''; // e.g. 'data:image/jpeg;base64,...' => 'image/jpeg' | |
base64 = base64.replace(/^data\:([^\;]+)\;base64,/gmi, ''); | |
var binary = atob(base64); | |
var len = binary.length; | |
var buffer = new ArrayBuffer(len); | |
var view = new Uint8Array(buffer); | |
for (var i = 0; i < len; i++) { | |
view[i] = binary.charCodeAt(i); | |
} | |
return buffer; | |
} | |
function objectURLToBlob(url, callback) { | |
var http = new XMLHttpRequest(); | |
http.open("GET", url, true); | |
http.responseType = "blob"; | |
http.onload = function(e) { | |
if (this.status == 200 || this.status === 0) { | |
callback(this.response); | |
} | |
}; | |
http.send(); | |
} | |
function getImageData(img, callback) { | |
function handleBinaryFile(binFile) { | |
var data = findEXIFinJPEG(binFile); | |
var iptcdata = findIPTCinJPEG(binFile); | |
var xmpdata= findXMPinJPEG(binFile); | |
img.exifdata = data || {}; | |
img.iptcdata = iptcdata || {}; | |
img.xmpdata = xmpdata || {}; | |
if (callback) { | |
callback.call(img); | |
} | |
} | |
if (img.src) { | |
if (/^data\:/i.test(img.src)) { // Data URI | |
var arrayBuffer = base64ToArrayBuffer(img.src); | |
handleBinaryFile(arrayBuffer); | |
} else if (/^blob\:/i.test(img.src)) { // Object URL | |
var fileReader = new FileReader(); | |
fileReader.onload = function(e) { | |
handleBinaryFile(e.target.result); | |
}; | |
objectURLToBlob(img.src, function (blob) { | |
fileReader.readAsArrayBuffer(blob); | |
}); | |
} else { | |
var http = new XMLHttpRequest(); | |
http.onload = function() { | |
if (this.status == 200 || this.status === 0) { | |
handleBinaryFile(http.response); | |
} else { | |
throw "Could not load image"; | |
} | |
http = null; | |
}; | |
http.open("GET", img.src, true); | |
http.responseType = "arraybuffer"; | |
http.send(null); | |
} | |
} else if (self.FileReader && (img instanceof self.Blob || img instanceof self.File)) { | |
var fileReader = new FileReader(); | |
fileReader.onload = function(e) { | |
if (debug) console.log("Got file of length " + e.target.result.byteLength); | |
handleBinaryFile(e.target.result); | |
}; | |
fileReader.readAsArrayBuffer(img); | |
} | |
} | |
function findEXIFinJPEG(file) { | |
var dataView = new DataView(file); | |
if (debug) console.log("Got file of length " + file.byteLength); | |
if ((dataView.getUint8(0) != 0xFF) || (dataView.getUint8(1) != 0xD8)) { | |
if (debug) console.log("Not a valid JPEG"); | |
return false; // not a valid jpeg | |
} | |
var offset = 2, | |
length = file.byteLength, | |
marker; | |
while (offset < length) { | |
if (dataView.getUint8(offset) != 0xFF) { | |
if (debug) console.log("Not a valid marker at offset " + offset + ", found: " + dataView.getUint8(offset)); | |
return false; // not a valid marker, something is wrong | |
} | |
marker = dataView.getUint8(offset + 1); | |
if (debug) console.log(marker); | |
// we could implement handling for other markers here, | |
// but we're only looking for 0xFFE1 for EXIF data | |
if (marker == 225) { | |
if (debug) console.log("Found 0xFFE1 marker"); | |
return readEXIFData(dataView, offset + 4, dataView.getUint16(offset + 2) - 2); | |
// offset += 2 + file.getShortAt(offset+2, true); | |
} else { | |
offset += 2 + dataView.getUint16(offset+2); | |
} | |
} | |
} | |
function findIPTCinJPEG(file) { | |
var dataView = new DataView(file); | |
if (debug) console.log("Got file of length " + file.byteLength); | |
if ((dataView.getUint8(0) != 0xFF) || (dataView.getUint8(1) != 0xD8)) { | |
if (debug) console.log("Not a valid JPEG"); | |
return false; // not a valid jpeg | |
} | |
var offset = 2, | |
length = file.byteLength; | |
var isFieldSegmentStart = function(dataView, offset){ | |
return ( | |
dataView.getUint8(offset) === 0x38 && | |
dataView.getUint8(offset+1) === 0x42 && | |
dataView.getUint8(offset+2) === 0x49 && | |
dataView.getUint8(offset+3) === 0x4D && | |
dataView.getUint8(offset+4) === 0x04 && | |
dataView.getUint8(offset+5) === 0x04 | |
); | |
}; | |
while (offset < length) { | |
if ( isFieldSegmentStart(dataView, offset )){ | |
// Get the length of the name header (which is padded to an even number of bytes) | |
var nameHeaderLength = dataView.getUint8(offset+7); | |
if(nameHeaderLength % 2 !== 0) nameHeaderLength += 1; | |
// Check for pre photoshop 6 format | |
if(nameHeaderLength === 0) { | |
// Always 4 | |
nameHeaderLength = 4; | |
} | |
var startOffset = offset + 8 + nameHeaderLength; | |
var sectionLength = dataView.getUint16(offset + 6 + nameHeaderLength); | |
return readIPTCData(file, startOffset, sectionLength); | |
break; | |
} | |
// Not the marker, continue searching | |
offset++; | |
} | |
} | |
var IptcFieldMap = { | |
0x78 : 'caption', | |
0x6E : 'credit', | |
0x19 : 'keywords', | |
0x37 : 'dateCreated', | |
0x50 : 'byline', | |
0x55 : 'bylineTitle', | |
0x7A : 'captionWriter', | |
0x69 : 'headline', | |
0x74 : 'copyright', | |
0x0F : 'category' | |
}; | |
function readIPTCData(file, startOffset, sectionLength){ | |
var dataView = new DataView(file); | |
var data = {}; | |
var fieldValue, fieldName, dataSize, segmentType, segmentSize; | |
var segmentStartPos = startOffset; | |
while(segmentStartPos < startOffset+sectionLength) { | |
if(dataView.getUint8(segmentStartPos) === 0x1C && dataView.getUint8(segmentStartPos+1) === 0x02){ | |
segmentType = dataView.getUint8(segmentStartPos+2); | |
if(segmentType in IptcFieldMap) { | |
dataSize = dataView.getInt16(segmentStartPos+3); | |
segmentSize = dataSize + 5; | |
fieldName = IptcFieldMap[segmentType]; | |
fieldValue = getStringFromDB(dataView, segmentStartPos+5, dataSize); | |
// Check if we already stored a value with this name | |
if(data.hasOwnProperty(fieldName)) { | |
// Value already stored with this name, create multivalue field | |
if(data[fieldName] instanceof Array) { | |
data[fieldName].push(fieldValue); | |
} | |
else { | |
data[fieldName] = [data[fieldName], fieldValue]; | |
} | |
} | |
else { | |
data[fieldName] = fieldValue; | |
} | |
} | |
} | |
segmentStartPos++; | |
} | |
return data; | |
} | |
function readTags(file, tiffStart, dirStart, strings, bigEnd) { | |
var entries = file.getUint16(dirStart, !bigEnd), | |
tags = {}, | |
entryOffset, tag, | |
i; | |
for (i=0;i<entries;i++) { | |
entryOffset = dirStart + i*12 + 2; | |
tag = strings[file.getUint16(entryOffset, !bigEnd)]; | |
if (!tag && debug) console.log("Unknown tag: " + file.getUint16(entryOffset, !bigEnd)); | |
tags[tag] = readTagValue(file, entryOffset, tiffStart, dirStart, bigEnd); | |
} | |
return tags; | |
} | |
function readTagValue(file, entryOffset, tiffStart, dirStart, bigEnd) { | |
var type = file.getUint16(entryOffset+2, !bigEnd), | |
numValues = file.getUint32(entryOffset+4, !bigEnd), | |
valueOffset = file.getUint32(entryOffset+8, !bigEnd) + tiffStart, | |
offset, | |
vals, val, n, | |
numerator, denominator; | |
switch (type) { | |
case 1: // byte, 8-bit unsigned int | |
case 7: // undefined, 8-bit byte, value depending on field | |
if (numValues == 1) { | |
return file.getUint8(entryOffset + 8, !bigEnd); | |
} else { | |
offset = numValues > 4 ? valueOffset : (entryOffset + 8); | |
vals = []; | |
for (n=0;n<numValues;n++) { | |
vals[n] = file.getUint8(offset + n); | |
} | |
return vals; | |
} | |
case 2: // ascii, 8-bit byte | |
offset = numValues > 4 ? valueOffset : (entryOffset + 8); | |
return getStringFromDB(file, offset, numValues-1); | |
case 3: // short, 16 bit int | |
if (numValues == 1) { | |
return file.getUint16(entryOffset + 8, !bigEnd); | |
} else { | |
offset = numValues > 2 ? valueOffset : (entryOffset + 8); | |
vals = []; | |
for (n=0;n<numValues;n++) { | |
vals[n] = file.getUint16(offset + 2*n, !bigEnd); | |
} | |
return vals; | |
} | |
case 4: // long, 32 bit int | |
if (numValues == 1) { | |
return file.getUint32(entryOffset + 8, !bigEnd); | |
} else { | |
vals = []; | |
for (n=0;n<numValues;n++) { | |
vals[n] = file.getUint32(valueOffset + 4*n, !bigEnd); | |
} | |
return vals; | |
} | |
case 5: // rational = two long values, first is numerator, second is denominator | |
if (numValues == 1) { | |
numerator = file.getUint32(valueOffset, !bigEnd); | |
denominator = file.getUint32(valueOffset+4, !bigEnd); | |
val = new Number(numerator / denominator); | |
val.numerator = numerator; | |
val.denominator = denominator; | |
return val; | |
} else { | |
vals = []; | |
for (n=0;n<numValues;n++) { | |
numerator = file.getUint32(valueOffset + 8*n, !bigEnd); | |
denominator = file.getUint32(valueOffset+4 + 8*n, !bigEnd); | |
vals[n] = new Number(numerator / denominator); | |
vals[n].numerator = numerator; | |
vals[n].denominator = denominator; | |
} | |
return vals; | |
} | |
case 9: // slong, 32 bit signed int | |
if (numValues == 1) { | |
return file.getInt32(entryOffset + 8, !bigEnd); | |
} else { | |
vals = []; | |
for (n=0;n<numValues;n++) { | |
vals[n] = file.getInt32(valueOffset + 4*n, !bigEnd); | |
} | |
return vals; | |
} | |
case 10: // signed rational, two slongs, first is numerator, second is denominator | |
if (numValues == 1) { | |
return file.getInt32(valueOffset, !bigEnd) / file.getInt32(valueOffset+4, !bigEnd); | |
} else { | |
vals = []; | |
for (n=0;n<numValues;n++) { | |
vals[n] = file.getInt32(valueOffset + 8*n, !bigEnd) / file.getInt32(valueOffset+4 + 8*n, !bigEnd); | |
} | |
return vals; | |
} | |
} | |
} | |
/** | |
* Given an IFD (Image File Directory) start offset | |
* returns an offset to next IFD or 0 if it's the last IFD. | |
*/ | |
function getNextIFDOffset(dataView, dirStart, bigEnd){ | |
//the first 2bytes means the number of directory entries contains in this IFD | |
var entries = dataView.getUint16(dirStart, !bigEnd); | |
// After last directory entry, there is a 4bytes of data, | |
// it means an offset to next IFD. | |
// If its value is '0x00000000', it means this is the last IFD and there is no linked IFD. | |
return dataView.getUint32(dirStart + 2 + entries * 12, !bigEnd); // each entry is 12 bytes long | |
} | |
function readThumbnailImage(dataView, tiffStart, firstIFDOffset, bigEnd){ | |
// get the IFD1 offset | |
var IFD1OffsetPointer = getNextIFDOffset(dataView, tiffStart+firstIFDOffset, bigEnd); | |
if (!IFD1OffsetPointer) { | |
// console.log('******** IFD1Offset is empty, image thumb not found ********'); | |
return {}; | |
} | |
else if (IFD1OffsetPointer > dataView.byteLength) { // this should not happen | |
// console.log('******** IFD1Offset is outside the bounds of the DataView ********'); | |
return {}; | |
} | |
// console.log('******* thumbnail IFD offset (IFD1) is: %s', IFD1OffsetPointer); | |
var thumbTags = readTags(dataView, tiffStart, tiffStart + IFD1OffsetPointer, IFD1Tags, bigEnd) | |
// EXIF 2.3 specification for JPEG format thumbnail | |
// If the value of Compression(0x0103) Tag in IFD1 is '6', thumbnail image format is JPEG. | |
// Most of Exif image uses JPEG format for thumbnail. In that case, you can get offset of thumbnail | |
// by JpegIFOffset(0x0201) Tag in IFD1, size of thumbnail by JpegIFByteCount(0x0202) Tag. | |
// Data format is ordinary JPEG format, starts from 0xFFD8 and ends by 0xFFD9. It seems that | |
// JPEG format and 160x120pixels of size are recommended thumbnail format for Exif2.1 or later. | |
if (thumbTags['Compression']) { | |
// console.log('Thumbnail image found!'); | |
switch (thumbTags['Compression']) { | |
case 6: | |
// console.log('Thumbnail image format is JPEG'); | |
if (thumbTags.JpegIFOffset && thumbTags.JpegIFByteCount) { | |
// extract the thumbnail | |
var tOffset = tiffStart + thumbTags.JpegIFOffset; | |
var tLength = thumbTags.JpegIFByteCount; | |
thumbTags['blob'] = new Blob([new Uint8Array(dataView.buffer, tOffset, tLength)], { | |
type: 'image/jpeg' | |
}); | |
} | |
break; | |
case 1: | |
console.log("Thumbnail image format is TIFF, which is not implemented."); | |
break; | |
default: | |
console.log("Unknown thumbnail image format '%s'", thumbTags['Compression']); | |
} | |
} | |
else if (thumbTags['PhotometricInterpretation'] == 2) { | |
console.log("Thumbnail image format is RGB, which is not implemented."); | |
} | |
return thumbTags; | |
} | |
function getStringFromDB(buffer, start, length) { | |
var outstr = ""; | |
for (n = start; n < start+length; n++) { | |
outstr += String.fromCharCode(buffer.getUint8(n)); | |
} | |
return outstr; | |
} | |
function readEXIFData(file, start) { | |
if (getStringFromDB(file, start, 4) != "Exif") { | |
if (debug) console.log("Not valid EXIF data! " + getStringFromDB(file, start, 4)); | |
return false; | |
} | |
var bigEnd, | |
tags, tag, | |
exifData, gpsData, | |
tiffOffset = start + 6; | |
// test for TIFF validity and endianness | |
if (file.getUint16(tiffOffset) == 0x4949) { | |
bigEnd = false; | |
} else if (file.getUint16(tiffOffset) == 0x4D4D) { | |
bigEnd = true; | |
} else { | |
if (debug) console.log("Not valid TIFF data! (no 0x4949 or 0x4D4D)"); | |
return false; | |
} | |
if (file.getUint16(tiffOffset+2, !bigEnd) != 0x002A) { | |
if (debug) console.log("Not valid TIFF data! (no 0x002A)"); | |
return false; | |
} | |
var firstIFDOffset = file.getUint32(tiffOffset+4, !bigEnd); | |
if (firstIFDOffset < 0x00000008) { | |
if (debug) console.log("Not valid TIFF data! (First offset less than 8)", file.getUint32(tiffOffset+4, !bigEnd)); | |
return false; | |
} | |
tags = readTags(file, tiffOffset, tiffOffset + firstIFDOffset, TiffTags, bigEnd); | |
if (tags.ExifIFDPointer) { | |
exifData = readTags(file, tiffOffset, tiffOffset + tags.ExifIFDPointer, ExifTags, bigEnd); | |
for (tag in exifData) { | |
switch (tag) { | |
case "FileSource" : | |
exifData[tag] = StringValues[tag][exifData[tag]]; | |
break; | |
case "ExifVersion" : | |
case "FlashpixVersion" : | |
exifData[tag] = String.fromCharCode(exifData[tag][0], exifData[tag][1], exifData[tag][2], exifData[tag][3]); | |
break; | |
case "ComponentsConfiguration" : | |
exifData[tag] = | |
StringValues.Components[exifData[tag][0]] + | |
StringValues.Components[exifData[tag][1]] + | |
StringValues.Components[exifData[tag][2]] + | |
StringValues.Components[exifData[tag][3]]; | |
break; | |
} | |
tags[tag] = exifData[tag]; | |
} | |
} | |
if (tags.GPSInfoIFDPointer) { | |
gpsData = readTags(file, tiffOffset, tiffOffset + tags.GPSInfoIFDPointer, GPSTags, bigEnd); | |
for (tag in gpsData) { | |
switch (tag) { | |
case "GPSVersionID" : | |
gpsData[tag] = gpsData[tag][0] + | |
"." + gpsData[tag][1] + | |
"." + gpsData[tag][2] + | |
"." + gpsData[tag][3]; | |
break; | |
} | |
tags[tag] = gpsData[tag]; | |
} | |
} | |
// extract thumbnail | |
tags['thumbnail'] = readThumbnailImage(file, tiffOffset, firstIFDOffset, bigEnd); | |
return tags; | |
} | |
function findXMPinJPEG(file) { | |
if (!('DOMParser' in self)) { | |
// console.warn('XML parsing not supported without DOMParser'); | |
return; | |
} | |
var dataView = new DataView(file); | |
if (debug) console.log("Got file of length " + file.byteLength); | |
if ((dataView.getUint8(0) != 0xFF) || (dataView.getUint8(1) != 0xD8)) { | |
if (debug) console.log("Not a valid JPEG"); | |
return false; // not a valid jpeg | |
} | |
var offset = 2, | |
length = file.byteLength, | |
dom = new DOMParser(); | |
while (offset < (length-4)) { | |
if (getStringFromDB(dataView, offset, 4) == "http") { | |
var startOffset = offset - 1; | |
var sectionLength = dataView.getUint16(offset - 2) - 1; | |
var xmpString = getStringFromDB(dataView, startOffset, sectionLength) | |
var xmpEndIndex = xmpString.indexOf('xmpmeta>') + 8; | |
xmpString = xmpString.substring( xmpString.indexOf( '<x:xmpmeta' ), xmpEndIndex ); | |
var indexOfXmp = xmpString.indexOf('x:xmpmeta') + 10 | |
//Many custom written programs embed xmp/xml without any namespace. Following are some of them. | |
//Without these namespaces, XML is thought to be invalid by parsers | |
xmpString = xmpString.slice(0, indexOfXmp) | |
+ 'xmlns:Iptc4xmpCore="http://iptc.org/std/Iptc4xmpCore/1.0/xmlns/" ' | |
+ 'xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ' | |
+ 'xmlns:tiff="http://ns.adobe.com/tiff/1.0/" ' | |
+ 'xmlns:plus="http://schemas.android.com/apk/lib/com.google.android.gms.plus" ' | |
+ 'xmlns:ext="http://www.gettyimages.com/xsltExtension/1.0" ' | |
+ 'xmlns:exif="http://ns.adobe.com/exif/1.0/" ' | |
+ 'xmlns:stEvt="http://ns.adobe.com/xap/1.0/sType/ResourceEvent#" ' | |
+ 'xmlns:stRef="http://ns.adobe.com/xap/1.0/sType/ResourceRef#" ' | |
+ 'xmlns:crs="http://ns.adobe.com/camera-raw-settings/1.0/" ' | |
+ 'xmlns:xapGImg="http://ns.adobe.com/xap/1.0/g/img/" ' | |
+ 'xmlns:Iptc4xmpExt="http://iptc.org/std/Iptc4xmpExt/2008-02-29/" ' | |
+ xmpString.slice(indexOfXmp) | |
var domDocument = dom.parseFromString( xmpString, 'text/xml' ); | |
return xml2Object(domDocument); | |
} else{ | |
offset++; | |
} | |
} | |
} | |
function xml2Object(xml) { | |
try { | |
var obj = {}; | |
if (xml.children.length > 0) { | |
for (var i = 0; i < xml.children.length; i++) { | |
var item = xml.children.item(i); | |
var attributes = item.attributes; | |
for(var idx in attributes) { | |
var itemAtt = attributes[idx]; | |
var dataKey = itemAtt.nodeName; | |
var dataValue = itemAtt.nodeValue; | |
if(dataKey !== undefined) { | |
obj[dataKey] = dataValue; | |
} | |
} | |
var nodeName = item.nodeName; | |
if (typeof (obj[nodeName]) == "undefined") { | |
obj[nodeName] = xml2json(item); | |
} else { | |
if (typeof (obj[nodeName].push) == "undefined") { | |
var old = obj[nodeName]; | |
obj[nodeName] = []; | |
obj[nodeName].push(old); | |
} | |
obj[nodeName].push(xml2json(item)); | |
} | |
} | |
} else { | |
obj = xml.textContent; | |
} | |
return obj; | |
} catch (e) { | |
console.log(e.message); | |
} | |
} | |
EXIF.getData = function(img, callback) { | |
if ((self.Image && img instanceof self.Image) | |
|| (self.HTMLImageElement && img instanceof self.HTMLImageElement) | |
&& !img.complete) | |
return false; | |
if (!imageHasData(img)) { | |
getImageData(img, callback); | |
} else { | |
if (callback) { | |
callback.call(img); | |
} | |
} | |
return true; | |
} | |
EXIF.getTag = function(img, tag) { | |
if (!imageHasData(img)) return; | |
return img.exifdata[tag]; | |
} | |
EXIF.getAllTags = function(img) { | |
if (!imageHasData(img)) return {}; | |
var a, | |
data = img.exifdata, | |
tags = {}; | |
for (a in data) { | |
if (data.hasOwnProperty(a)) { | |
tags[a] = data[a]; | |
} | |
} | |
return tags; | |
} | |
EXIF.pretty = function(img) { | |
if (!imageHasData(img)) return ""; | |
var a, | |
data = img.exifdata, | |
strPretty = ""; | |
for (a in data) { | |
if (data.hasOwnProperty(a)) { | |
if (typeof data[a] == "object") { | |
if (data[a] instanceof Number) { | |
strPretty += a + " : " + data[a] + " [" + data[a].numerator + "/" + data[a].denominator + "]\r\n"; | |
} else { | |
strPretty += a + " : [" + data[a].length + " values]\r\n"; | |
} | |
} else { | |
strPretty += a + " : " + data[a] + "\r\n"; | |
} | |
} | |
} | |
return strPretty; | |
} | |
EXIF.readFromBinaryFile = function(file) { | |
return findEXIFinJPEG(file); | |
} | |
if (typeof define === 'function' && define.amd) { | |
define('exif-js', [], function() { | |
return EXIF; | |
}); | |
} | |
}.call(this)); |
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