/* * QRコード格納可能情報量の判別 * */ /* * 各種モードのベースクラス */ var Mode = Class.create({ initialize: function(str, version) { this.str = str; this.version = version; }, str_size_indicator: function() { if(this.version > 0 && this.version <= 9) { return this.str_size_indicator_array()[0]; } else if(this.version > 9 && this.version <= 26) { return this.str_size_indicator_array()[1]; } else if(this.version > 26 && this.version <= 40) { return this.str_size_indicator_array()[2]; } else { throw "Error: undefined version '"+this.version+"'."; } }, str_size_indicator_array: function() { return null; } }); var BitByteMode = Class.create(Mode, { get_bit_size: function() { return 4 + this.str_size_indicator() + 8*this.str.length; }, str_size_indicator_array: function() { return [8,16,16]; } }); var NumericMode = Class.create(Mode, { get_bit_size: function() { r = [0,4,7]; return 4 + this.str_size_indicator() + 10*(this.str.length/3).floor() + r[this.str.length%3]; }, str_size_indicator_array: function() { return [10,12,14]; } }); var AlphaNumericMode = Class.create(Mode, { get_bit_size: function() { return 4 + this.str_size_indicator() + 11*(this.str.length/2).floor() + 6*(this.str.length%2); }, str_size_indicator_array: function() { return [9,11,13]; } }); var KanjiMode = Class.create(Mode, { get_bit_size: function() { return 4 + this.str_size_indicator() + 13*this.str.length; }, str_size_indicator_array: function() { return [8,10,12]; } }); /* * QR文字データ等から許容量を算出するクラス */ var QRData = Class.create({ initialize: function(data_str, version, ec) { // CONSTRUCTOR this.NUMERIC_MODE = 1; this.ALPHA_NUMERIC_MODE = 2; this.BIT_BYTE_MODE = 3; this.KANJI_MODE = 4; this.current_mode = null; this.index_starting_current_mode = 0; this.numeric_counter = 0; this.alpha_numeric_counter = 0; this.kanji_counter = 0; this.bit_byte_counter = 0; this.segments = []; this.capacity_definition = new Array(new Array(19,16,13,9), // version1 new Array(34,28,22,16), new Array(55,44,34,26), new Array(80,64,48,36), new Array(108,86,62,46), new Array(136,108,76,60), new Array(156,124,88,66), new Array(194,154,110,86), new Array(232,182,132,100), new Array(274,216,154,122), new Array(324,254,180,140), // version11 new Array(370,290,206,158), new Array(428,334,244,180), new Array(461,365,261,197), new Array(523,415,295,223), new Array(589,453,325,253), new Array(647,507,367,283), new Array(721,563,397,313), new Array(795,627,445,341), new Array(861,669,485,385), new Array(932,714,512,406), // version21 new Array(1006,782,568,442), new Array(1094,860,614,464), new Array(1174,914,664,514), new Array(1276,1000,718,538), new Array(1370,1062,754,596), new Array(1468,1128,808,628), new Array(1531,1193,871,661), new Array(1631,1267,911,701), new Array(1735,1373,985,745), new Array(1843,1455,1033,793), // version31 new Array(1955,1541,1115,845), new Array(2071,1631,1171,901), new Array(2191,1725,1231,961), new Array(2306,1812,1286,986), new Array(2434,1914,1354,1054), new Array(2566,1992,1426,1096), new Array(2702,2102,1502,1142), new Array(2812,2216,1582,1222), new Array(2956,2334,1666,1276)); this.data_str = data_str; this.ec = ec; // バージョンが設定されていない場合はデフォルトで8としておく if(version == 0) { this.version = 10; } else { this.version = version; } // ------------------ // PRIVATE METHOD // this.calc_optimized_bit_size = function() { this.define_init_mode(); // 以降の処理 for(i = 0; i < this.data_str.length; i++) { if(this.current_mode == this.BIT_BYTE_MODE) { target_modes_to_count = new Hash({ numeric: [6,8,9], alpha_numeric: [11,15,16], kanji: [1,1,1]}); this.algorithm_frame(i, this.BIT_BYTE_MODE, target_modes_to_count); } else if(this.current_mode == this.ALPHA_NUMERIC_MODE) { target_modes_to_count = new Hash({ numeric: [13,15,17], bit_byte: [1,1,1], kanji: [1,1,1] }); this.algorithm_frame(i, this.ALPHA_NUMERIC_MODE, target_modes_to_count); } else if(this.current_mode == this.NUMERIC_MODE) { target_modes_to_count = new Hash({ bit_byte: [1,1,1], alpha_numeric: [1,1,1], kanji: [1,1,1] }); this.algorithm_frame(i, this.NUMERIC_MODE, target_modes_to_count); } else if(this.current_mode == this.KANJI_MODE) { break; } } // 最後のセグメントを追加 this.segments.push(this.newCurrentMode(this.data_str.slice(this.index_starting_current_mode), this.version)); var total_bit_size = 0; this.segments.each(function(segment) { var size = segment.get_bit_size(); total_bit_size += size; }); return total_bit_size; } /* * どの文字種とするかの識別 * return 1: 数字, 2: 英数, 3: 8bit, 4: 漢字 */ this.what_set = function(single_char) { // 文字種判別 if(single_char.charCodeAt(0) <= 0xFF && single_char.charCodeAt(0) != 0x20 && single_char.charCodeAt(0) != 0x24 && single_char.charCodeAt(0) != 0x25 && single_char.charCodeAt(0) != 0x2A && single_char.charCodeAt(0) != 0x2B && (single_char.charCodeAt(0) < 0x2D || single_char.charCodeAt(0) > 0x3A) && (single_char.charCodeAt(0) < 0x41 || single_char.charCodeAt(0) > 0x5A)) { // 8bitバイトモード return this.BIT_BYTE_MODE; } else if((single_char.charCodeAt(0) >= 0x41 && single_char.charCodeAt(0) <= 0x5A) || single_char.charCodeAt(0) == 0x20 || single_char.charCodeAt(0) == 0x24 || single_char.charCodeAt(0) == 0x25 || single_char.charCodeAt(0) == 0x2A || single_char.charCodeAt(0) == 0x2B || single_char.charCodeAt(0) == 0x2D || single_char.charCodeAt(0) == 0x2E || single_char.charCodeAt(0) == 0x2F || single_char.charCodeAt(0) == 0x3A) { // 英数 return this.ALPHA_NUMERIC_MODE; } else if(single_char.match(/[0-9]/)) { // 数字 return this.NUMERIC_MODE; } else { // 漢字 return this.KANJI_MODE; } } this.index_by_version = function() { if(this.version > 0 && this.version <= 9) { return 0;} else if(this.version > 9 && this.version <= 27) { return 1;} else if(this.version > 27 && this.version <= 40) { return 2;} else { throw "Error: undefined version '"+this.version+"'."; } } this.define_init_mode = function() { current_char = this.data_str.charAt(0); // 初期モード判別 if(this.what_set(current_char) == this.KANJI_MODE) { // 漢字モード this.current_mode = this.KANJI_MODE; } else if(this.what_set(current_char) == this.BIT_BYTE_MODE) { // 8bitモード this.current_mode = this.BIT_BYTE_MODE; } else if(this.what_set(current_char) == this.ALPHA_NUMERIC_MODE) { for(i = 1; i <= ([6,7,8])[this.index_by_version()]; i++) { if(this.what_set(this.data_str.charAt(i)) == this.BIT_BYTE_MODE) { // 8bitモード this.current_mode = this.BIT_BYTE_MODE; break; } } if(this.current_mode == null) { // 英数モード this.current_mode = this.ALPHA_NUMERIC_MODE; } } else if(current_char.match(/[0-9]/)) { for(i = 1; i <= ([7,8,9])[this.index_by_version()]; i++) { if(i <= ([4,4,5])[this.index_by_version()] && this.what_set(this.data_str.charAt(i)) == this.BIT_BYTE_MODE) { // 8bitモード this.current_mode = this.BIT_BYTE_MODE; break; } else if(this.what_set(this.data_str.charAt(i)) == this.ALPHA_NUMERIC_MODE) { // 英数モード this.current_mode = this.ALPHA_NUMERIC_MODE; break; } } if(this.current_mode == null) { // 数字モード this.current_mode = this.NUMERIC_MODE; } } } this.algorithm_frame = function(index, current_mode, target_modes_to_count) { // 連続する文字種のカウント // その他はリセット switch(this.what_set(this.data_str.charAt(index))) { case this.NUMERIC_MODE: this.numeric_counter++; this.alpha_numeric_counter = 0; this.bit_byte_counter = 0; this.kanji_counter = 0; break; case this.ALPHA_NUMERIC_MODE: this.numeric_counter = 0; this.alpha_numeric_counter++; this.bit_byte_counter = 0; this.kanji_counter = 0; break; case this.BIT_BYTE_MODE: this.numeric_counter = 0; this.alpha_numeric_counter = 0; this.bit_byte_counter++; this.kanji_counter = 0; break; case this.KANJI_MODE: this.numeric_counter = 0; this.alpha_numeric_counter = 0; this.bit_byte_counter = 0; this.kanji_counter++; break; } // 条件(件数)に合えば新しいセグメント開始のため、 // 以前のセグメントを保存して区切る // 区切りパターン: 指定件数を越えた場合 if(target_modes_to_count.get('numeric') != null && this.numeric_counter >= (target_modes_to_count.get('numeric'))[this.index_by_version()]) { this.segments.push(this.newCurrentMode(this.data_str.slice(this.index_starting_current_mode, i - this.numeric_counter + 1))); this.index_starting_current_mode = i - this.numeric_counter + 1; this.current_mode = this.NUMERIC_MODE; } else if(target_modes_to_count.get('alpha_numeric') != null && this.alpha_numeric_counter >= (target_modes_to_count.get('alpha_numeric'))[this.index_by_version()]) { this.segments.push(this.newCurrentMode(this.data_str.slice(this.index_starting_current_mode, i - this.alpha_numeric_counter + 1))); this.index_starting_current_mode = i - this.alpha_numeric_counter + 1; this.current_mode = this.ALPHA_NUMERIC_MODE; } else if(target_modes_to_count.get('bit_byte') != null && this.bit_byte_counter >= (target_modes_to_count.get('bit_byte'))[this.index_by_version()]) { this.segments.push(this.newCurrentMode(this.data_str.slice(this.index_starting_current_mode, i - this.bit_byte_counter + 1))); this.index_starting_current_mode = i - this.bit_byte_counter + 1; this.current_mode = this.BIT_BYTE_MODE; } else if(target_modes_to_count.get('kanji') != null && this.kanji_counter >= (target_modes_to_count.get('kanji'))[this.index_by_version()]) { this.segments.push(this.newCurrentMode(this.data_str.slice(this.index_starting_current_mode, i - this.kanji_counter + 1))); this.index_starting_current_mode = i - this.kanji_counter + 1; this.current_mode = this.KANJI_MODE; } } this.newCurrentMode = function(str) { switch(this.current_mode) { case this.NUMERIC_MODE: return new NumericMode(str, this.version); case this.ALPHA_NUMERIC_MODE: return new AlphaNumericMode(str, this.version); case this.BIT_BYTE_MODE: return new BitByteMode(str, this.version); case this.KANJI_MODE: return new KanjiMode(str, this.version); } } }, // ------------- // PUBLIC METHOD // /* * パーセンテージを計算する */ calc_percentage: function () { if(this.version > 0) { capacity = this.capacity_definition[this.version - 1][["L","M","Q","H"].indexOf(this.ec)]; } else { capacity = this.capacity_definition[9][["L","M","Q","H"].indexOf(this.ec)]; } optimized_bit_size = this.data_str.length == 0 ? 0 : this.calc_optimized_bit_size(); return (optimized_bit_size*100 / (capacity*8)).ceil(); } }); function calc_number_of_module(version) { return 17 + 4*version; }