How to use getExifSeg method in wpt

Best JavaScript code snippet using wpt

piexif.js

Source:piexif.js

...428        var segments,429            app1;430        if (data.slice(0, 2) == "\xff\xd8") { // JPEG431            segments = splitIntoSegments(data);432            app1 = getExifSeg(segments);433            if (app1) {434                this.tiftag = app1.slice(10);435            } else {436                this.tiftag = null;437            }438        } else if (["\x49\x49", "\x4d\x4d"].indexOf(data.slice(0, 2)) > -1) { // TIFF439            this.tiftag = data;440        } else if (data.slice(0, 4) == "Exif") { // Exif441            this.tiftag = data.slice(6);442        } else {443            throw ("Given file is neither JPEG nor TIFF.");444        }445    }446    ExifReader.prototype = {447        get_ifd: function (pointer, ifd_name) {448            var ifd_dict = {};449            var tag_count = unpack(this.endian_mark + "H",450                this.tiftag.slice(pointer, pointer + 2))[0];451            var offset = pointer + 2;452            var t;453            if (["0th", "1st"].indexOf(ifd_name) > -1) {454                t = "Image";455            } else {456                t = ifd_name;457            }458            for (var x = 0; x < tag_count; x++) {459                pointer = offset + 12 * x;460                var tag = unpack(this.endian_mark + "H",461                    this.tiftag.slice(pointer, pointer + 2))[0];462                var value_type = unpack(this.endian_mark + "H",463                    this.tiftag.slice(pointer + 2, pointer + 4))[0];464                var value_num = unpack(this.endian_mark + "L",465                    this.tiftag.slice(pointer + 4, pointer + 8))[0];466                var value = this.tiftag.slice(pointer + 8, pointer + 12);467                var v_set = [value_type, value_num, value];468                if (tag in TAGS[t]) {469                    ifd_dict[tag] = this.convert_value(v_set);470                }471            }472            if (ifd_name == "0th") {473                pointer = offset + 12 * tag_count;474                ifd_dict["first_ifd_pointer"] = this.tiftag.slice(pointer, pointer + 4);475            }476            return ifd_dict;477        },478        convert_value: function (val) {479            var data = null;480            var t = val[0];481            var length = val[1];482            var value = val[2];483            var pointer;484            if (t == 1) { // BYTE485                if (length > 4) {486                    pointer = unpack(this.endian_mark + "L", value)[0];487                    data = unpack(this.endian_mark + nStr("B", length),488                        this.tiftag.slice(pointer, pointer + length));489                } else {490                    data = unpack(this.endian_mark + nStr("B", length), value.slice(0, length));491                }492            } else if (t == 2) { // ASCII493                if (length > 4) {494                    pointer = unpack(this.endian_mark + "L", value)[0];495                    data = this.tiftag.slice(pointer, pointer + length - 1);496                } else {497                    data = value.slice(0, length - 1);498                }499            } else if (t == 3) { // SHORT500                if (length > 2) {501                    pointer = unpack(this.endian_mark + "L", value)[0];502                    data = unpack(this.endian_mark + nStr("H", length),503                        this.tiftag.slice(pointer, pointer + length * 2));504                } else {505                    data = unpack(this.endian_mark + nStr("H", length),506                        value.slice(0, length * 2));507                }508            } else if (t == 4) { // LONG509                if (length > 1) {510                    pointer = unpack(this.endian_mark + "L", value)[0];511                    data = unpack(this.endian_mark + nStr("L", length),512                        this.tiftag.slice(pointer, pointer + length * 4));513                } else {514                    data = unpack(this.endian_mark + nStr("L", length),515                        value);516                }517            } else if (t == 5) { // RATIONAL518                pointer = unpack(this.endian_mark + "L", value)[0];519                if (length > 1) {520                    data = [];521                    for (var x = 0; x < length; x++) {522                        data.push([unpack(this.endian_mark + "L",523                                this.tiftag.slice(pointer + x * 8, pointer + 4 + x * 8))[0],524                                   unpack(this.endian_mark + "L",525                                this.tiftag.slice(pointer + 4 + x * 8, pointer + 8 + x * 8))[0]526                                   ]);527                    }528                } else {529                    data = [unpack(this.endian_mark + "L",530                            this.tiftag.slice(pointer, pointer + 4))[0],531                            unpack(this.endian_mark + "L",532                            this.tiftag.slice(pointer + 4, pointer + 8))[0]533                            ];534                }535            } else if (t == 7) { // UNDEFINED BYTES536                if (length > 4) {537                    pointer = unpack(this.endian_mark + "L", value)[0];538                    data = this.tiftag.slice(pointer, pointer + length);539                } else {540                    data = value.slice(0, length);541                }542            } else if (t == 10) { // SRATIONAL543                pointer = unpack(this.endian_mark + "L", value)[0];544                if (length > 1) {545                    data = [];546                    for (var x = 0; x < length; x++) {547                        data.push([unpack(this.endian_mark + "l",548                                this.tiftag.slice(pointer + x * 8, pointer + 4 + x * 8))[0],549                                   unpack(this.endian_mark + "l",550                                this.tiftag.slice(pointer + 4 + x * 8, pointer + 8 + x * 8))[0]551                                  ]);552                    }553                } else {554                    data = [unpack(this.endian_mark + "l",555                            this.tiftag.slice(pointer, pointer + 4))[0],556                            unpack(this.endian_mark + "l",557                            this.tiftag.slice(pointer + 4, pointer + 8))[0]558                           ];559                }560            } else {561                throw ("Exif might be wrong. Got incorrect value " +562                    "type to decode. type:" + t);563            }564            if ((data instanceof Array) && (data.length == 1)) {565                return data[0];566            } else {567                return data;568            }569        },570    };571    if (typeof window !== "undefined" && typeof window.btoa === "function") {572        var btoa = window.btoa;573    }574    if (typeof btoa === "undefined") {575        var btoa = function (input) {        var output = "";576            var chr1, chr2, chr3, enc1, enc2, enc3, enc4;577            var i = 0;578            var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";579            while (i < input.length) {580                chr1 = input.charCodeAt(i++);581                chr2 = input.charCodeAt(i++);582                chr3 = input.charCodeAt(i++);583                enc1 = chr1 >> 2;584                enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);585                enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);586                enc4 = chr3 & 63;587                if (isNaN(chr2)) {588                    enc3 = enc4 = 64;589                } else if (isNaN(chr3)) {590                    enc4 = 64;591                }592                output = output +593                keyStr.charAt(enc1) + keyStr.charAt(enc2) +594                keyStr.charAt(enc3) + keyStr.charAt(enc4);595            }596            return output;597        };598    }599    600    601    if (typeof window !== "undefined" && typeof window.atob === "function") {602        var atob = window.atob;603    }604    if (typeof atob === "undefined") {605        var atob = function (input) {606            var output = "";607            var chr1, chr2, chr3;608            var enc1, enc2, enc3, enc4;609            var i = 0;610            var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";611            input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");612            while (i < input.length) {613                enc1 = keyStr.indexOf(input.charAt(i++));614                enc2 = keyStr.indexOf(input.charAt(i++));615                enc3 = keyStr.indexOf(input.charAt(i++));616                enc4 = keyStr.indexOf(input.charAt(i++));617                chr1 = (enc1 << 2) | (enc2 >> 4);618                chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);619                chr3 = ((enc3 & 3) << 6) | enc4;620                output = output + String.fromCharCode(chr1);621                if (enc3 != 64) {622                    output = output + String.fromCharCode(chr2);623                }624                if (enc4 != 64) {625                    output = output + String.fromCharCode(chr3);626                }627            }628            return output;629        };630    }631    function getImageSize(imageArray) {632        var segments = slice2Segments(imageArray);633        var seg,634            width,635            height,636            SOF = [192, 193, 194, 195, 197, 198, 199, 201, 202, 203, 205, 206, 207];637        for (var x = 0; x < segments.length; x++) {638            seg = segments[x];639            if (SOF.indexOf(seg[1]) >= 0) {640                height = seg[5] * 256 + seg[6];641                width = seg[7] * 256 + seg[8];642                break;643            }644        }645        return [width, height];646    }647    function pack(mark, array) {648        if (!(array instanceof Array)) {649            throw ("'pack' error. Got invalid type argument.");650        }651        if ((mark.length - 1) != array.length) {652            throw ("'pack' error. " + (mark.length - 1) + " marks, " + array.length + " elements.");653        }654        var littleEndian;655        if (mark[0] == "<") {656            littleEndian = true;657        } else if (mark[0] == ">") {658            littleEndian = false;659        } else {660            throw ("");661        }662        var packed = "";663        var p = 1;664        var val = null;665        var c = null;666        var valStr = null;667        while (c = mark[p]) {668            if (c.toLowerCase() == "b") {669                val = array[p - 1];670                if ((c == "b") && (val < 0)) {671                    val += 0x100;672                }673                if ((val > 0xff) || (val < 0)) {674                    throw ("'pack' error.");675                } else {676                    valStr = String.fromCharCode(val);677                }678            } else if (c == "H") {679                val = array[p - 1];680                if ((val > 0xffff) || (val < 0)) {681                    throw ("'pack' error.");682                } else {683                    valStr = String.fromCharCode(Math.floor((val % 0x10000) / 0x100)) +684                        String.fromCharCode(val % 0x100);685                    if (littleEndian) {686                        valStr = valStr.split("").reverse().join("");687                    }688                }689            } else if (c.toLowerCase() == "l") {690                val = array[p - 1];691                if ((c == "l") && (val < 0)) {692                    val += 0x100000000;693                }694                if ((val > 0xffffffff) || (val < 0)) {695                    throw ("'pack' error.");696                } else {697                    valStr = String.fromCharCode(Math.floor(val / 0x1000000)) +698                        String.fromCharCode(Math.floor((val % 0x1000000) / 0x10000)) +699                        String.fromCharCode(Math.floor((val % 0x10000) / 0x100)) +700                        String.fromCharCode(val % 0x100);701                    if (littleEndian) {702                        valStr = valStr.split("").reverse().join("");703                    }704                }705            } else {706                throw ("'pack' error.");707            }708            packed += valStr;709            p += 1;710        }711        return packed;712    }713    function unpack(mark, str) {714        if (typeof (str) != "string") {715            throw ("'unpack' error. Got invalid type argument.");716        }717        var l = 0;718        for (var markPointer = 1; markPointer < mark.length; markPointer++) {719            if (mark[markPointer].toLowerCase() == "b") {720                l += 1;721            } else if (mark[markPointer].toLowerCase() == "h") {722                l += 2;723            } else if (mark[markPointer].toLowerCase() == "l") {724                l += 4;725            } else {726                throw ("'unpack' error. Got invalid mark.");727            }728        }729        if (l != str.length) {730            throw ("'unpack' error. Mismatch between symbol and string length. " + l + ":" + str.length);731        }732        var littleEndian;733        if (mark[0] == "<") {734            littleEndian = true;735        } else if (mark[0] == ">") {736            littleEndian = false;737        } else {738            throw ("'unpack' error.");739        }740        var unpacked = [];741        var strPointer = 0;742        var p = 1;743        var val = null;744        var c = null;745        var length = null;746        var sliced = "";747        while (c = mark[p]) {748            if (c.toLowerCase() == "b") {749                length = 1;750                sliced = str.slice(strPointer, strPointer + length);751                val = sliced.charCodeAt(0);752                if ((c == "b") && (val >= 0x80)) {753                    val -= 0x100;754                }755            } else if (c == "H") {756                length = 2;757                sliced = str.slice(strPointer, strPointer + length);758                if (littleEndian) {759                    sliced = sliced.split("").reverse().join("");760                }761                val = sliced.charCodeAt(0) * 0x100 +762                    sliced.charCodeAt(1);763            } else if (c.toLowerCase() == "l") {764                length = 4;765                sliced = str.slice(strPointer, strPointer + length);766                if (littleEndian) {767                    sliced = sliced.split("").reverse().join("");768                }769                val = sliced.charCodeAt(0) * 0x1000000 +770                    sliced.charCodeAt(1) * 0x10000 +771                    sliced.charCodeAt(2) * 0x100 +772                    sliced.charCodeAt(3);773                if ((c == "l") && (val >= 0x80000000)) {774                    val -= 0x100000000;775                }776            } else {777                throw ("'unpack' error. " + c);778            }779            unpacked.push(val);780            strPointer += length;781            p += 1;782        }783        return unpacked;784    }785    function nStr(ch, num) {786        var str = "";787        for (var i = 0; i < num; i++) {788            str += ch;789        }790        return str;791    }792    function splitIntoSegments(data) {793        if (data.slice(0, 2) != "\xff\xd8") {794            throw ("Given data isn't JPEG.");795        }796        var head = 2;797        var segments = ["\xff\xd8"];798        while (true) {799            if (data.slice(head, head + 2) == "\xff\xda") {800                segments.push(data.slice(head));801                break;802            } else {803                var length = unpack(">H", data.slice(head + 2, head + 4))[0];804                var endPoint = head + length + 2;805                segments.push(data.slice(head, endPoint));806                head = endPoint;807            }808            if (head >= data.length) {809                throw ("Wrong JPEG data.");810            }811        }812        return segments;813    }814    function getExifSeg(segments) {815        var seg;816        for (var i = 0; i < segments.length; i++) {817            seg = segments[i];818            if (seg.slice(0, 2) == "\xff\xe1" &&819                   seg.slice(4, 10) == "Exif\x00\x00") {820                return seg;821            }822        }823        return null;824    }825    function mergeSegments(segments, exif) {826        827        if (segments[1].slice(0, 2) == "\xff\xe0" &&828            (segments[2].slice(0, 2) == "\xff\xe1" &&...

Using AI Code Generation

1var wptools = require('wptools');2var fs = require('fs');3var path = require('path');4var file = path.join(__dirname, 'test.jpg');5var exif = wptools.getExifSeg(file);6fs.writeFileSync("test.json", JSON.stringify(exif, null, 2));7{8  "scripts": {9  },10  "dependencies": {11  }12}13{14  "dependencies": {15    "wptools": {

Using AI Code Generation

1var wptools = require('wptools');2var fs = require('fs');3var options = {4};5var wp = new wptools.page('File:Koala.jpg', options);6wp.getExifSeg(function(err, result) {7  if (err) {8    console.log(err);9    return;10  }11  fs.writeFile('exif.json', JSON.stringify(result, null, 2), function(err) {12    if (err) {13      console.log(err);14    } else {15      console.log('exif.json saved.');16    }17  });18});19{

Using AI Code Generation

1var wptools = require('wp-tools');2wptools.getExifSeg('./test.jpg', function(err, exif) {3    if (err) {4        console.log(err);5    }6    console.log(exif);7});8{ '0th': 9   { ImageWidth: 1024,

Using AI Code Generation

1var wptools = require('wptools');2var wp = wptools.page('Albert Einstein');3wp.getExifSeg(function(err, exif) {4  if (err) {5    console.log('Error: ' + err);6  } else {7    console.log(exif);8  }9});10var wptools = require('wptools');11var wp = wptools.page('Albert Einstein');12wp.getExifSeg(function(err, exif) {13  if (err) {14    console.log('Error: ' + err);15  } else {16    console.log(exif);17  }18});19var wptools = require('wptools');20var wp = wptools.page('Albert Einstein');21wp.getExifSeg(function(err, exif) {22  if (err) {23    console.log('Error: ' + err);24  } else {25    console.log(exif);26  }27});28var wptools = require('wptools');29var wp = wptools.page('Albert Einstein');30wp.getExifSeg(function(err, exif) {31  if (err) {32    console.log('Error: ' + err);33  } else {34    console.log(exif);35  }36});37var wptools = require('wptools');38var wp = wptools.page('Albert Einstein');39wp.getExifSeg(function(err, exif) {40  if (err) {41    console.log('Error: ' + err);42  } else {43    console.log(exif);44  }45});46var wptools = require('wptools');47var wp = wptools.page('Albert Einstein');48wp.getExifSeg(function(err, exif) {49  if (err) {50    console.log('Error: ' + err);51  } else {52    console.log(exif);53  }54});55var wptools = require('wptools');56var wp = wptools.page('Albert Einstein');57wp.getExifSeg(function(err, exif) {

Using AI Code Generation

1var wpt = require('wpt');2var exif = wpt.getExifSeg('test.jpg');3console.log(exif);4var wpt = require('wpt');5var exif = wpt.getExifSeg('test.jpg');6console.log(exif);

Using AI Code Generation

1var wptools = require('wptools');2  if(err){3    console.log(err);4  }else{5    console.log(exif);6  }7});8var wptools = require('wptools');9  if(err){10    console.log(err);11  }else{12    console.log(exif);13  }14});15var wptools = require('wptools');16  if(err){17    console.log(err);18  }else{19    console.log(exif);20  }21});22var wptools = require('wptools');23  if(err){24    console.log(err);25  }else{26    console.log(exif);27  }28});29var wptools = require('wptools');30  if(err){31    console.log(err);32  }else{33    console.log(exif);34  }35});36var wptools = require('wptools');

Using AI Code Generation

1var file = process.argv[2];2var wptools = require('./wptools.js');3var exif = wptools.getExifSeg(file);4console.log(exif);5console.log(wptools.exifToExifTool(exif));6console.log(wptools.exifToExifTool(exif, true));7console.log(wptools.exifToExifTool(exif, false, true));8console.log(wptools.exifToExifTool(exif, true, false));9console.log(wptools.exifToExifTool(exif, true, true));10console.log(wptools.exifToExifTool(exif, false, false));11console.log(wptools.exifToExifTool(exif, false, true));12console.log(wptools.exifToExifTool(exif, true, false));13console.log(wptools.exifToExifTool(exif, true, true));14console.log(wptools.exifToExifTool(exif, false, false));15console.log(wptools.exifToExifTool(exif

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