XOOPS /
XoopsCore25
| Total Complexity | 207 |
| Total Lines | 1061 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Datamatrix often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Datamatrix, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 110 | class Datamatrix { |
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| 111 | |||
| 112 | /** |
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| 113 | * Barcode array to be returned which is readable by TCPDF. |
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| 114 | * @protected |
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| 115 | */ |
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| 116 | protected $barcode_array = array(); |
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| 117 | |||
| 118 | /** |
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| 119 | * Store last used encoding for data codewords. |
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| 120 | * @protected |
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| 121 | */ |
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| 122 | protected $last_enc = ENC_ASCII; |
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| 123 | |||
| 124 | /** |
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| 125 | * Table of Data Matrix ECC 200 Symbol Attributes:<ul> |
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| 126 | * <li>total matrix rows (including finder pattern)</li> |
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| 127 | * <li>total matrix cols (including finder pattern)</li> |
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| 128 | * <li>total matrix rows (without finder pattern)</li> |
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| 129 | * <li>total matrix cols (without finder pattern)</li> |
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| 130 | * <li>region data rows (with finder pattern)</li> |
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| 131 | * <li>region data col (with finder pattern)</li> |
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| 132 | * <li>region data rows (without finder pattern)</li> |
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| 133 | * <li>region data col (without finder pattern)</li> |
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| 134 | * <li>horizontal regions</li> |
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| 135 | * <li>vertical regions</li> |
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| 136 | * <li>regions</li> |
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| 137 | * <li>data codewords</li> |
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| 138 | * <li>error codewords</li> |
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| 139 | * <li>blocks</li> |
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| 140 | * <li>data codewords per block</li> |
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| 141 | * <li>error codewords per block</li> |
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| 142 | * </ul> |
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| 143 | * @protected |
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| 144 | */ |
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| 145 | protected $symbattr = array( |
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| 146 | // square form --------------------------------------------------------------------------------------- |
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| 147 | array(0x00a,0x00a,0x008,0x008,0x00a,0x00a,0x008,0x008,0x001,0x001,0x001,0x003,0x005,0x001,0x003,0x005), // 10x10 |
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| 148 | array(0x00c,0x00c,0x00a,0x00a,0x00c,0x00c,0x00a,0x00a,0x001,0x001,0x001,0x005,0x007,0x001,0x005,0x007), // 12x12 |
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| 149 | array(0x00e,0x00e,0x00c,0x00c,0x00e,0x00e,0x00c,0x00c,0x001,0x001,0x001,0x008,0x00a,0x001,0x008,0x00a), // 14x14 |
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| 150 | array(0x010,0x010,0x00e,0x00e,0x010,0x010,0x00e,0x00e,0x001,0x001,0x001,0x00c,0x00c,0x001,0x00c,0x00c), // 16x16 |
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| 151 | array(0x012,0x012,0x010,0x010,0x012,0x012,0x010,0x010,0x001,0x001,0x001,0x012,0x00e,0x001,0x012,0x00e), // 18x18 |
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| 152 | array(0x014,0x014,0x012,0x012,0x014,0x014,0x012,0x012,0x001,0x001,0x001,0x016,0x012,0x001,0x016,0x012), // 20x20 |
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| 153 | array(0x016,0x016,0x014,0x014,0x016,0x016,0x014,0x014,0x001,0x001,0x001,0x01e,0x014,0x001,0x01e,0x014), // 22x22 |
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| 154 | array(0x018,0x018,0x016,0x016,0x018,0x018,0x016,0x016,0x001,0x001,0x001,0x024,0x018,0x001,0x024,0x018), // 24x24 |
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| 155 | array(0x01a,0x01a,0x018,0x018,0x01a,0x01a,0x018,0x018,0x001,0x001,0x001,0x02c,0x01c,0x001,0x02c,0x01c), // 26x26 |
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| 156 | array(0x020,0x020,0x01c,0x01c,0x010,0x010,0x00e,0x00e,0x002,0x002,0x004,0x03e,0x024,0x001,0x03e,0x024), // 32x32 |
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| 157 | array(0x024,0x024,0x020,0x020,0x012,0x012,0x010,0x010,0x002,0x002,0x004,0x056,0x02a,0x001,0x056,0x02a), // 36x36 |
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| 158 | array(0x028,0x028,0x024,0x024,0x014,0x014,0x012,0x012,0x002,0x002,0x004,0x072,0x030,0x001,0x072,0x030), // 40x40 |
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| 159 | array(0x02c,0x02c,0x028,0x028,0x016,0x016,0x014,0x014,0x002,0x002,0x004,0x090,0x038,0x001,0x090,0x038), // 44x44 |
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| 160 | array(0x030,0x030,0x02c,0x02c,0x018,0x018,0x016,0x016,0x002,0x002,0x004,0x0ae,0x044,0x001,0x0ae,0x044), // 48x48 |
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| 161 | array(0x034,0x034,0x030,0x030,0x01a,0x01a,0x018,0x018,0x002,0x002,0x004,0x0cc,0x054,0x002,0x066,0x02a), // 52x52 |
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| 162 | array(0x040,0x040,0x038,0x038,0x010,0x010,0x00e,0x00e,0x004,0x004,0x010,0x118,0x070,0x002,0x08c,0x038), // 64x64 |
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| 163 | array(0x048,0x048,0x040,0x040,0x012,0x012,0x010,0x010,0x004,0x004,0x010,0x170,0x090,0x004,0x05c,0x024), // 72x72 |
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| 164 | array(0x050,0x050,0x048,0x048,0x014,0x014,0x012,0x012,0x004,0x004,0x010,0x1c8,0x0c0,0x004,0x072,0x030), // 80x80 |
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| 165 | array(0x058,0x058,0x050,0x050,0x016,0x016,0x014,0x014,0x004,0x004,0x010,0x240,0x0e0,0x004,0x090,0x038), // 88x88 |
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| 166 | array(0x060,0x060,0x058,0x058,0x018,0x018,0x016,0x016,0x004,0x004,0x010,0x2b8,0x110,0x004,0x0ae,0x044), // 96x96 |
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| 167 | array(0x068,0x068,0x060,0x060,0x01a,0x01a,0x018,0x018,0x004,0x004,0x010,0x330,0x150,0x006,0x088,0x038), // 104x104 |
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| 168 | array(0x078,0x078,0x06c,0x06c,0x014,0x014,0x012,0x012,0x006,0x006,0x024,0x41a,0x198,0x006,0x0af,0x044), // 120x120 |
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| 169 | array(0x084,0x084,0x078,0x078,0x016,0x016,0x014,0x014,0x006,0x006,0x024,0x518,0x1f0,0x008,0x0a3,0x03e), // 132x132 |
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| 170 | array(0x090,0x090,0x084,0x084,0x018,0x018,0x016,0x016,0x006,0x006,0x024,0x616,0x26c,0x00a,0x09c,0x03e), // 144x144 |
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| 171 | // rectangular form (currently unused) --------------------------------------------------------------------------- |
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| 172 | array(0x008,0x012,0x006,0x010,0x008,0x012,0x006,0x010,0x001,0x001,0x001,0x005,0x007,0x001,0x005,0x007), // 8x18 |
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| 173 | array(0x008,0x020,0x006,0x01c,0x008,0x010,0x006,0x00e,0x001,0x002,0x002,0x00a,0x00b,0x001,0x00a,0x00b), // 8x32 |
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| 174 | array(0x00c,0x01a,0x00a,0x018,0x00c,0x01a,0x00a,0x018,0x001,0x001,0x001,0x010,0x00e,0x001,0x010,0x00e), // 12x26 |
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| 175 | array(0x00c,0x024,0x00a,0x020,0x00c,0x012,0x00a,0x010,0x001,0x002,0x002,0x00c,0x012,0x001,0x00c,0x012), // 12x36 |
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| 176 | array(0x010,0x024,0x00e,0x020,0x010,0x012,0x00e,0x010,0x001,0x002,0x002,0x020,0x018,0x001,0x020,0x018), // 16x36 |
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| 177 | array(0x010,0x030,0x00e,0x02c,0x010,0x018,0x00e,0x016,0x001,0x002,0x002,0x031,0x01c,0x001,0x031,0x01c) // 16x48 |
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| 178 | ); |
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| 179 | |||
| 180 | /** |
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| 181 | * Map encodation modes whit character sets. |
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| 182 | * @protected |
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| 183 | */ |
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| 184 | protected $chset_id = array(ENC_C40 => 'C40', ENC_TXT => 'TXT', ENC_X12 =>'X12'); |
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| 185 | |||
| 186 | /** |
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| 187 | * Basic set of characters for each encodation mode. |
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| 188 | * @protected |
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| 189 | */ |
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| 190 | protected $chset = array( |
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| 191 | 'C40' => array( // Basic set for C40 ---------------------------------------------------------------------------- |
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| 192 | 'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, // |
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| 193 | 0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x41=>0x0e,0x42=>0x0f,0x43=>0x10,0x44=>0x11,0x45=>0x12,0x46=>0x13, // |
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| 194 | 0x47=>0x14,0x48=>0x15,0x49=>0x16,0x4a=>0x17,0x4b=>0x18,0x4c=>0x19,0x4d=>0x1a,0x4e=>0x1b,0x4f=>0x1c,0x50=>0x1d, // |
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| 195 | 0x51=>0x1e,0x52=>0x1f,0x53=>0x20,0x54=>0x21,0x55=>0x22,0x56=>0x23,0x57=>0x24,0x58=>0x25,0x59=>0x26,0x5a=>0x27),// |
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| 196 | 'TXT' => array( // Basic set for TEXT --------------------------------------------------------------------------- |
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| 197 | 'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, // |
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| 198 | 0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x61=>0x0e,0x62=>0x0f,0x63=>0x10,0x64=>0x11,0x65=>0x12,0x66=>0x13, // |
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| 199 | 0x67=>0x14,0x68=>0x15,0x69=>0x16,0x6a=>0x17,0x6b=>0x18,0x6c=>0x19,0x6d=>0x1a,0x6e=>0x1b,0x6f=>0x1c,0x70=>0x1d, // |
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| 200 | 0x71=>0x1e,0x72=>0x1f,0x73=>0x20,0x74=>0x21,0x75=>0x22,0x76=>0x23,0x77=>0x24,0x78=>0x25,0x79=>0x26,0x7a=>0x27),// |
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| 201 | 'SH1' => array( // Shift 1 set ---------------------------------------------------------------------------------- |
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| 202 | 0x00=>0x00,0x01=>0x01,0x02=>0x02,0x03=>0x03,0x04=>0x04,0x05=>0x05,0x06=>0x06,0x07=>0x07,0x08=>0x08,0x09=>0x09, // |
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| 203 | 0x0a=>0x0a,0x0b=>0x0b,0x0c=>0x0c,0x0d=>0x0d,0x0e=>0x0e,0x0f=>0x0f,0x10=>0x10,0x11=>0x11,0x12=>0x12,0x13=>0x13, // |
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| 204 | 0x14=>0x14,0x15=>0x15,0x16=>0x16,0x17=>0x17,0x18=>0x18,0x19=>0x19,0x1a=>0x1a,0x1b=>0x1b,0x1c=>0x1c,0x1d=>0x1d, // |
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| 205 | 0x1e=>0x1e,0x1f=>0x1f), // |
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| 206 | 'SH2' => array( // Shift 2 set ---------------------------------------------------------------------------------- |
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| 207 | 0x21=>0x00,0x22=>0x01,0x23=>0x02,0x24=>0x03,0x25=>0x04,0x26=>0x05,0x27=>0x06,0x28=>0x07,0x29=>0x08,0x2a=>0x09, // |
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| 208 | 0x2b=>0x0a,0x2c=>0x0b,0x2d=>0x0c,0x2e=>0x0d,0x2f=>0x0e,0x3a=>0x0f,0x3b=>0x10,0x3c=>0x11,0x3d=>0x12,0x3e=>0x13, // |
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| 209 | 0x3f=>0x14,0x40=>0x15,0x5b=>0x16,0x5c=>0x17,0x5d=>0x18,0x5e=>0x19,0x5f=>0x1a,'F1'=>0x1b,'US'=>0x1e), // |
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| 210 | 'S3C' => array( // Shift 3 set for C40 -------------------------------------------------------------------------- |
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| 211 | 0x60=>0x00,0x61=>0x01,0x62=>0x02,0x63=>0x03,0x64=>0x04,0x65=>0x05,0x66=>0x06,0x67=>0x07,0x68=>0x08,0x69=>0x09, // |
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| 212 | 0x6a=>0x0a,0x6b=>0x0b,0x6c=>0x0c,0x6d=>0x0d,0x6e=>0x0e,0x6f=>0x0f,0x70=>0x10,0x71=>0x11,0x72=>0x12,0x73=>0x13, // |
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| 213 | 0x74=>0x14,0x75=>0x15,0x76=>0x16,0x77=>0x17,0x78=>0x18,0x79=>0x19,0x7a=>0x1a,0x7b=>0x1b,0x7c=>0x1c,0x7d=>0x1d, // |
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| 214 | 0x7e=>0x1e,0x7f=>0x1f), |
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| 215 | 'S3T' => array( // Shift 3 set for TEXT ------------------------------------------------------------------------- |
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| 216 | 0x60=>0x00,0x41=>0x01,0x42=>0x02,0x43=>0x03,0x44=>0x04,0x45=>0x05,0x46=>0x06,0x47=>0x07,0x48=>0x08,0x49=>0x09, // |
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| 217 | 0x4a=>0x0a,0x4b=>0x0b,0x4c=>0x0c,0x4d=>0x0d,0x4e=>0x0e,0x4f=>0x0f,0x50=>0x10,0x51=>0x11,0x52=>0x12,0x53=>0x13, // |
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| 218 | 0x54=>0x14,0x55=>0x15,0x56=>0x16,0x57=>0x17,0x58=>0x18,0x59=>0x19,0x5a=>0x1a,0x7b=>0x1b,0x7c=>0x1c,0x7d=>0x1d, // |
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| 219 | 0x7e=>0x1e,0x7f=>0x1f), // |
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| 220 | 'X12' => array( // Set for X12 ---------------------------------------------------------------------------------- |
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| 221 | 0x0d=>0x00,0x2a=>0x01,0x3e=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, // |
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| 222 | 0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x41=>0x0e,0x42=>0x0f,0x43=>0x10,0x44=>0x11,0x45=>0x12,0x46=>0x13, // |
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| 223 | 0x47=>0x14,0x48=>0x15,0x49=>0x16,0x4a=>0x17,0x4b=>0x18,0x4c=>0x19,0x4d=>0x1a,0x4e=>0x1b,0x4f=>0x1c,0x50=>0x1d, // |
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| 224 | 0x51=>0x1e,0x52=>0x1f,0x53=>0x20,0x54=>0x21,0x55=>0x22,0x56=>0x23,0x57=>0x24,0x58=>0x25,0x59=>0x26,0x5a=>0x27) // |
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| 225 | ); |
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| 226 | |||
| 227 | // ----------------------------------------------------------------------------- |
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| 228 | |||
| 229 | /** |
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| 230 | * This is the class constructor. |
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| 231 | * Creates a datamatrix object |
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| 232 | * @param string $code Code to represent using Datamatrix. |
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| 233 | * @public |
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| 234 | */ |
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| 235 | public function __construct($code) { |
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| 236 | $barcode_array = array(); |
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|
Unused Code
introduced
by
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| 237 | if ((is_null($code)) OR ($code == '\0') OR ($code == '')) { |
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| 238 | return false; |
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| 239 | } |
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| 240 | // get data codewords |
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| 241 | $cw = $this->getHighLevelEncoding($code); |
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| 242 | // number of data codewords |
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| 243 | $nd = count($cw); |
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| 244 | // check size |
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| 245 | if ($nd > 1558) { |
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| 246 | return false; |
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| 247 | } |
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| 248 | // get minimum required matrix size. |
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| 249 | foreach ($this->symbattr as $params) { |
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| 250 | if ($params[11] >= $nd) { |
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| 251 | break; |
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| 252 | } |
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| 253 | } |
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| 254 | if ($params[11] < $nd) { |
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| 255 | // too much data |
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| 256 | return false; |
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| 257 | } elseif ($params[11] > $nd) { |
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| 258 | // add padding |
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| 259 | if ((($params[11] - $nd) > 1) AND ($cw[($nd - 1)] != 254)) { |
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| 260 | if ($this->last_enc == ENC_EDF) { |
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| 261 | // switch to ASCII encoding |
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| 262 | $cw[] = 124; |
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| 263 | ++$nd; |
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| 264 | } elseif (($this->last_enc != ENC_ASCII) AND ($this->last_enc != ENC_BASE256)) { |
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| 265 | // switch to ASCII encoding |
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| 266 | $cw[] = 254; |
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| 267 | ++$nd; |
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| 268 | } |
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| 269 | } |
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| 270 | if ($params[11] > $nd) { |
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| 271 | // add first pad |
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| 272 | $cw[] = 129; |
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| 273 | ++$nd; |
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| 274 | // add remaining pads |
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| 275 | for ($i = $nd; $i < $params[11]; ++$i) { |
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| 276 | $cw[] = $this->get253StateCodeword(129, $i); |
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| 277 | } |
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| 278 | } |
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| 279 | } |
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| 280 | // add error correction codewords |
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| 281 | $cw = $this->getErrorCorrection($cw, $params[13], $params[14], $params[15]); |
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| 282 | // initialize empty arrays |
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| 283 | $grid = array_fill(0, ($params[2] * $params[3]), 0); |
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| 284 | // get placement map |
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| 285 | $places = $this->getPlacementMap($params[2], $params[3]); |
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| 286 | // fill the grid with data |
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| 287 | $grid = array(); |
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| 288 | $i = 0; |
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| 289 | // region data row max index |
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| 290 | $rdri = ($params[4] - 1); |
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| 291 | // region data column max index |
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| 292 | $rdci = ($params[5] - 1); |
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| 293 | // for each vertical region |
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| 294 | for ($vr = 0; $vr < $params[9]; ++$vr) { |
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| 295 | // for each row on region |
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| 296 | for ($r = 0; $r < $params[4]; ++$r) { |
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| 297 | // get row |
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| 298 | $row = (($vr * $params[4]) + $r); |
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| 299 | // for each horizontal region |
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| 300 | for ($hr = 0; $hr < $params[8]; ++$hr) { |
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| 301 | // for each column on region |
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| 302 | for ($c = 0; $c < $params[5]; ++$c) { |
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| 303 | // get column |
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| 304 | $col = (($hr * $params[5]) + $c); |
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| 305 | // braw bits by case |
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| 306 | if ($r == 0) { |
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| 307 | // top finder pattern |
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| 308 | if ($c % 2) { |
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| 309 | $grid[$row][$col] = 0; |
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| 310 | } else { |
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| 311 | $grid[$row][$col] = 1; |
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| 312 | } |
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| 313 | } elseif ($r == $rdri) { |
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| 314 | // bottom finder pattern |
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| 315 | $grid[$row][$col] = 1; |
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| 316 | } elseif ($c == 0) { |
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| 317 | // left finder pattern |
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| 318 | $grid[$row][$col] = 1; |
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| 319 | } elseif ($c == $rdci) { |
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| 320 | // right finder pattern |
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| 321 | if ($r % 2) { |
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| 322 | $grid[$row][$col] = 1; |
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| 323 | } else { |
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| 324 | $grid[$row][$col] = 0; |
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| 325 | } |
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| 326 | } else { // data bit |
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| 327 | if ($places[$i] < 2) { |
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| 328 | $grid[$row][$col] = $places[$i]; |
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| 329 | } else { |
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| 330 | // codeword ID |
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| 331 | $cw_id = (floor($places[$i] / 10) - 1); |
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| 332 | // codeword BIT mask |
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| 333 | $cw_bit = pow(2, (8 - ($places[$i] % 10))); |
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| 334 | $grid[$row][$col] = (($cw[$cw_id] & $cw_bit) == 0) ? 0 : 1; |
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| 335 | } |
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| 336 | ++$i; |
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| 337 | } |
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| 338 | } |
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| 339 | } |
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| 340 | } |
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| 341 | } |
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| 342 | $this->barcode_array['num_rows'] = $params[0]; |
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| 343 | $this->barcode_array['num_cols'] = $params[1]; |
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| 344 | $this->barcode_array['bcode'] = $grid; |
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| 345 | } |
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| 346 | |||
| 347 | /** |
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| 348 | * Returns a barcode array which is readable by TCPDF |
||
| 349 | * @return array barcode array readable by TCPDF; |
||
| 350 | * @public |
||
| 351 | */ |
||
| 352 | public function getBarcodeArray() { |
||
| 353 | return $this->barcode_array; |
||
| 354 | } |
||
| 355 | |||
| 356 | /** |
||
| 357 | * Product of two numbers in a Power-of-Two Galois Field |
||
| 358 | * @param int $a first number to multiply. |
||
| 359 | * @param int $b second number to multiply. |
||
| 360 | * @param array $log Log table. |
||
| 361 | * @param array $alog Anti-Log table. |
||
| 362 | * @param int $gf Number of Factors of the Reed-Solomon polynomial. |
||
| 363 | * @return int product |
||
| 364 | * @protected |
||
| 365 | */ |
||
| 366 | protected function getGFProduct($a, $b, $log, $alog, $gf) { |
||
| 367 | if (($a == 0) OR ($b == 0)) { |
||
| 368 | return 0; |
||
| 369 | } |
||
| 370 | return ($alog[($log[$a] + $log[$b]) % ($gf - 1)]); |
||
| 371 | } |
||
| 372 | |||
| 373 | /** |
||
| 374 | * Add error correction codewords to data codewords array (ANNEX E). |
||
| 375 | * @param array $wd Array of datacodewords. |
||
| 376 | * @param int $nb Number of blocks. |
||
| 377 | * @param int $nd Number of data codewords per block. |
||
| 378 | * @param int $nc Number of correction codewords per block. |
||
| 379 | * @param int $gf numner of fields on log/antilog table (power of 2). |
||
| 380 | * @param int $pp The value of its prime modulus polynomial (301 for ECC200). |
||
| 381 | * @return array data codewords + error codewords |
||
| 382 | * @protected |
||
| 383 | */ |
||
| 384 | protected function getErrorCorrection($wd, $nb, $nd, $nc, $gf=256, $pp=301) { |
||
| 385 | // generate the log ($log) and antilog ($alog) tables |
||
| 386 | $log[0] = 0; |
||
| 387 | $alog[0] = 1; |
||
| 388 | for ($i = 1; $i < $gf; ++$i) { |
||
| 389 | $alog[$i] = ($alog[($i - 1)] * 2); |
||
| 390 | if ($alog[$i] >= $gf) { |
||
| 391 | $alog[$i] ^= $pp; |
||
| 392 | } |
||
| 393 | $log[$alog[$i]] = $i; |
||
| 394 | } |
||
| 395 | ksort($log); |
||
| 396 | // generate the polynomial coefficients (c) |
||
| 397 | $c = array_fill(0, ($nc + 1), 0); |
||
| 398 | $c[0] = 1; |
||
| 399 | for ($i = 1; $i <= $nc; ++$i) { |
||
| 400 | $c[$i] = $c[($i-1)]; |
||
| 401 | for ($j = ($i - 1); $j >= 1; --$j) { |
||
| 402 | $c[$j] = $c[($j - 1)] ^ $this->getGFProduct($c[$j], $alog[$i], $log, $alog, $gf); |
||
| 403 | } |
||
| 404 | $c[0] = $this->getGFProduct($c[0], $alog[$i], $log, $alog, $gf); |
||
| 405 | } |
||
| 406 | ksort($c); |
||
| 407 | // total number of data codewords |
||
| 408 | $num_wd = ($nb * $nd); |
||
| 409 | // total number of error codewords |
||
| 410 | $num_we = ($nb * $nc); |
||
| 411 | // for each block |
||
| 412 | for ($b = 0; $b < $nb; ++$b) { |
||
| 413 | // create interleaved data block |
||
| 414 | $block = array(); |
||
| 415 | for ($n = $b; $n < $num_wd; $n += $nb) { |
||
| 416 | $block[] = $wd[$n]; |
||
| 417 | } |
||
| 418 | // initialize error codewords |
||
| 419 | $we = array_fill(0, ($nc + 1), 0); |
||
| 420 | // calculate error correction codewords for this block |
||
| 421 | for ($i = 0; $i < $nd; ++$i) { |
||
| 422 | $k = ($we[0] ^ $block[$i]); |
||
| 423 | for ($j = 0; $j < $nc; ++$j) { |
||
| 424 | $we[$j] = ($we[($j + 1)] ^ $this->getGFProduct($k, $c[($nc - $j - 1)], $log, $alog, $gf)); |
||
| 425 | } |
||
| 426 | } |
||
| 427 | // add error codewords at the end of data codewords |
||
| 428 | $j = 0; |
||
| 429 | for ($i = $b; $i < $num_we; $i += $nb) { |
||
| 430 | $wd[($num_wd + $i)] = $we[$j]; |
||
| 431 | ++$j; |
||
| 432 | } |
||
| 433 | } |
||
| 434 | // reorder codewords |
||
| 435 | ksort($wd); |
||
| 436 | return $wd; |
||
| 437 | } |
||
| 438 | |||
| 439 | /** |
||
| 440 | * Return the 253-state codeword |
||
| 441 | * @param int $cwpad Pad codeword. |
||
| 442 | * @param int $cwpos Number of data codewords from the beginning of encoded data. |
||
| 443 | * @return int pad codeword |
||
| 444 | * @protected |
||
| 445 | */ |
||
| 446 | protected function get253StateCodeword($cwpad, $cwpos) { |
||
| 447 | $pad = ($cwpad + (((149 * $cwpos) % 253) + 1)); |
||
| 448 | if ($pad > 254) { |
||
| 449 | $pad -= 254; |
||
| 450 | } |
||
| 451 | return $pad; |
||
| 452 | } |
||
| 453 | |||
| 454 | /** |
||
| 455 | * Return the 255-state codeword |
||
| 456 | * @param int $cwpad Pad codeword. |
||
| 457 | * @param int $cwpos Number of data codewords from the beginning of encoded data. |
||
| 458 | * @return int pad codeword |
||
| 459 | * @protected |
||
| 460 | */ |
||
| 461 | protected function get255StateCodeword($cwpad, $cwpos) { |
||
| 462 | $pad = ($cwpad + (((149 * $cwpos) % 255) + 1)); |
||
| 463 | if ($pad > 255) { |
||
| 464 | $pad -= 256; |
||
| 465 | } |
||
| 466 | return $pad; |
||
| 467 | } |
||
| 468 | |||
| 469 | /** |
||
| 470 | * Returns true if the char belongs to the selected mode |
||
| 471 | * @param int $chr Character (byte) to check. |
||
| 472 | * @param int $mode Current encoding mode. |
||
| 473 | * @return boolean true if the char is of the selected mode. |
||
| 474 | * @protected |
||
| 475 | */ |
||
| 476 | protected function isCharMode($chr, $mode) { |
||
| 477 | $status = false; |
||
| 478 | switch ($mode) { |
||
| 479 | case ENC_ASCII: { // ASCII character 0 to 127 |
||
| 480 | $status = (($chr >= 0) AND ($chr <= 127)); |
||
| 481 | break; |
||
| 482 | } |
||
| 483 | case ENC_C40: { // Upper-case alphanumeric |
||
| 484 | $status = (($chr == 32) OR (($chr >= 48) AND ($chr <= 57)) OR (($chr >= 65) AND ($chr <= 90))); |
||
| 485 | break; |
||
| 486 | } |
||
| 487 | case ENC_TXT: { // Lower-case alphanumeric |
||
| 488 | $status = (($chr == 32) OR (($chr >= 48) AND ($chr <= 57)) OR (($chr >= 97) AND ($chr <= 122))); |
||
| 489 | break; |
||
| 490 | } |
||
| 491 | case ENC_X12: { // ANSI X12 |
||
| 492 | $status = (($chr == 13) OR ($chr == 42) OR ($chr == 62)); |
||
| 493 | break; |
||
| 494 | } |
||
| 495 | case ENC_EDF: { // ASCII character 32 to 94 |
||
| 496 | $status = (($chr >= 32) AND ($chr <= 94)); |
||
| 497 | break; |
||
| 498 | } |
||
| 499 | case ENC_BASE256: { // Function character (FNC1, Structured Append, Reader Program, or Code Page) |
||
| 500 | $status = (($chr == 232) OR ($chr == 233) OR ($chr == 234) OR ($chr == 241)); |
||
| 501 | break; |
||
| 502 | } |
||
| 503 | case ENC_ASCII_EXT: { // ASCII character 128 to 255 |
||
| 504 | $status = (($chr >= 128) AND ($chr <= 255)); |
||
| 505 | break; |
||
| 506 | } |
||
| 507 | case ENC_ASCII_NUM: { // ASCII digits |
||
| 508 | $status = (($chr >= 48) AND ($chr <= 57)); |
||
| 509 | break; |
||
| 510 | } |
||
| 511 | } |
||
| 512 | return $status; |
||
| 513 | } |
||
| 514 | |||
| 515 | /** |
||
| 516 | * The look-ahead test scans the data to be encoded to find the best mode (Annex P - steps from J to S). |
||
| 517 | * @param string $data data to encode |
||
| 518 | * @param int $pos current position |
||
| 519 | * @param int $mode current encoding mode |
||
| 520 | * @return int encoding mode |
||
| 521 | * @protected |
||
| 522 | */ |
||
| 523 | protected function lookAheadTest($data, $pos, $mode) { |
||
| 524 | $data_length = strlen($data); |
||
| 525 | if ($pos >= $data_length) { |
||
| 526 | return $mode; |
||
| 527 | } |
||
| 528 | $charscount = 0; // count processed chars |
||
| 529 | // STEP J |
||
| 530 | if ($mode == ENC_ASCII) { |
||
| 531 | $numch = array(0, 1, 1, 1, 1, 1.25); |
||
| 532 | } else { |
||
| 533 | $numch = array(1, 2, 2, 2, 2, 2.25); |
||
| 534 | $numch[$mode] = 0; |
||
| 535 | } |
||
| 536 | while (true) { |
||
| 537 | // STEP K |
||
| 538 | if (($pos + $charscount) == $data_length) { |
||
| 539 | if ($numch[ENC_ASCII] <= ceil(min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256]))) { |
||
| 540 | return ENC_ASCII; |
||
| 541 | } |
||
| 542 | if ($numch[ENC_BASE256] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF]))) { |
||
| 543 | return ENC_BASE256; |
||
| 544 | } |
||
| 545 | if ($numch[ENC_EDF] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_BASE256]))) { |
||
| 546 | return ENC_EDF; |
||
| 547 | } |
||
| 548 | if ($numch[ENC_TXT] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256]))) { |
||
| 549 | return ENC_TXT; |
||
| 550 | } |
||
| 551 | if ($numch[ENC_X12] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256]))) { |
||
| 552 | return ENC_X12; |
||
| 553 | } |
||
| 554 | return ENC_C40; |
||
| 555 | } |
||
| 556 | // get char |
||
| 557 | $chr = ord($data[$pos + $charscount]); |
||
| 558 | $charscount++; |
||
| 559 | // STEP L |
||
| 560 | if ($this->isCharMode($chr, ENC_ASCII_NUM)) { |
||
| 561 | $numch[ENC_ASCII] += (1 / 2); |
||
| 562 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
| 563 | $numch[ENC_ASCII] = ceil($numch[ENC_ASCII]); |
||
| 564 | $numch[ENC_ASCII] += 2; |
||
| 565 | } else { |
||
| 566 | $numch[ENC_ASCII] = ceil($numch[ENC_ASCII]); |
||
| 567 | $numch[ENC_ASCII] += 1; |
||
| 568 | } |
||
| 569 | // STEP M |
||
| 570 | if ($this->isCharMode($chr, ENC_C40)) { |
||
| 571 | $numch[ENC_C40] += (2 / 3); |
||
| 572 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
| 573 | $numch[ENC_C40] += (8 / 3); |
||
| 574 | } else { |
||
| 575 | $numch[ENC_C40] += (4 / 3); |
||
| 576 | } |
||
| 577 | // STEP N |
||
| 578 | if ($this->isCharMode($chr, ENC_TXT)) { |
||
| 579 | $numch[ENC_TXT] += (2 / 3); |
||
| 580 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
| 581 | $numch[ENC_TXT] += (8 / 3); |
||
| 582 | } else { |
||
| 583 | $numch[ENC_TXT] += (4 / 3); |
||
| 584 | } |
||
| 585 | // STEP O |
||
| 586 | if ($this->isCharMode($chr, ENC_X12) OR $this->isCharMode($chr, ENC_C40)) { |
||
| 587 | $numch[ENC_X12] += (2 / 3); |
||
| 588 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
| 589 | $numch[ENC_X12] += (13 / 3); |
||
| 590 | } else { |
||
| 591 | $numch[ENC_X12] += (10 / 3); |
||
| 592 | } |
||
| 593 | // STEP P |
||
| 594 | if ($this->isCharMode($chr, ENC_EDF)) { |
||
| 595 | $numch[ENC_EDF] += (3 / 4); |
||
| 596 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
| 597 | $numch[ENC_EDF] += (17 / 4); |
||
| 598 | } else { |
||
| 599 | $numch[ENC_EDF] += (13 / 4); |
||
| 600 | } |
||
| 601 | // STEP Q |
||
| 602 | if ($this->isCharMode($chr, ENC_BASE256)) { |
||
| 603 | $numch[ENC_BASE256] += 4; |
||
| 604 | } else { |
||
| 605 | $numch[ENC_BASE256] += 1; |
||
| 606 | } |
||
| 607 | // STEP R |
||
| 608 | if ($charscount >= 4) { |
||
| 609 | if (($numch[ENC_ASCII] + 1) <= min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
||
| 610 | return ENC_ASCII; |
||
| 611 | } |
||
| 612 | if ((($numch[ENC_BASE256] + 1) <= $numch[ENC_ASCII]) |
||
| 613 | OR (($numch[ENC_BASE256] + 1) < min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF]))) { |
||
| 614 | return ENC_BASE256; |
||
| 615 | } |
||
| 616 | if (($numch[ENC_EDF] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_BASE256])) { |
||
| 617 | return ENC_EDF; |
||
| 618 | } |
||
| 619 | if (($numch[ENC_TXT] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
||
| 620 | return ENC_TXT; |
||
| 621 | } |
||
| 622 | if (($numch[ENC_X12] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
||
| 623 | return ENC_X12; |
||
| 624 | } |
||
| 625 | if (($numch[ENC_C40] + 1) < min($numch[ENC_ASCII], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
||
| 626 | if ($numch[ENC_C40] < $numch[ENC_X12]) { |
||
| 627 | return ENC_C40; |
||
| 628 | } |
||
| 629 | if ($numch[ENC_C40] == $numch[ENC_X12]) { |
||
| 630 | $k = ($pos + $charscount + 1); |
||
| 631 | while ($k < $data_length) { |
||
| 632 | $tmpchr = ord($data[$k]); |
||
| 633 | if ($this->isCharMode($tmpchr, ENC_X12)) { |
||
| 634 | return ENC_X12; |
||
| 635 | } elseif (!($this->isCharMode($tmpchr, ENC_X12) OR $this->isCharMode($tmpchr, ENC_C40))) { |
||
| 636 | break; |
||
| 637 | } |
||
| 638 | ++$k; |
||
| 639 | } |
||
| 640 | return ENC_C40; |
||
| 641 | } |
||
| 642 | } |
||
| 643 | } |
||
| 644 | } // end of while |
||
| 645 | } |
||
| 646 | |||
| 647 | /** |
||
| 648 | * Get the switching codeword to a new encoding mode (latch codeword) |
||
| 649 | * @param int $mode New encoding mode. |
||
| 650 | * @return int Switch codeword. |
||
| 651 | * @protected |
||
| 652 | */ |
||
| 653 | protected function getSwitchEncodingCodeword($mode) { |
||
| 654 | switch ($mode) { |
||
| 655 | case ENC_ASCII: { // ASCII character 0 to 127 |
||
| 656 | $cw = 254; |
||
| 657 | if ($this->last_enc == ENC_EDF) { |
||
| 658 | $cw = 124; |
||
| 659 | } |
||
| 660 | break; |
||
| 661 | } |
||
| 662 | case ENC_C40: { // Upper-case alphanumeric |
||
| 663 | $cw = 230; |
||
| 664 | break; |
||
| 665 | } |
||
| 666 | case ENC_TXT: { // Lower-case alphanumeric |
||
| 667 | $cw = 239; |
||
| 668 | break; |
||
| 669 | } |
||
| 670 | case ENC_X12: { // ANSI X12 |
||
| 671 | $cw = 238; |
||
| 672 | break; |
||
| 673 | } |
||
| 674 | case ENC_EDF: { // ASCII character 32 to 94 |
||
| 675 | $cw = 240; |
||
| 676 | break; |
||
| 677 | } |
||
| 678 | case ENC_BASE256: { // Function character (FNC1, Structured Append, Reader Program, or Code Page) |
||
| 679 | $cw = 231; |
||
| 680 | break; |
||
| 681 | } |
||
| 682 | } |
||
| 683 | return $cw; |
||
| 684 | } |
||
| 685 | |||
| 686 | /** |
||
| 687 | * Choose the minimum matrix size and return the max number of data codewords. |
||
| 688 | * @param int $numcw Number of current codewords. |
||
| 689 | * @return int number of data codewords in matrix |
||
| 690 | * @protected |
||
| 691 | */ |
||
| 692 | protected function getMaxDataCodewords($numcw) { |
||
| 693 | foreach ($this->symbattr as $key => $matrix) { |
||
| 694 | if ($matrix[11] >= $numcw) { |
||
| 695 | return $matrix[11]; |
||
| 696 | } |
||
| 697 | } |
||
| 698 | return 0; |
||
| 699 | } |
||
| 700 | |||
| 701 | /** |
||
| 702 | * Get high level encoding using the minimum symbol data characters for ECC 200 |
||
| 703 | * @param string $data data to encode |
||
| 704 | * @return array of codewords |
||
| 705 | * @protected |
||
| 706 | */ |
||
| 707 | protected function getHighLevelEncoding($data) { |
||
| 708 | // STEP A. Start in ASCII encodation. |
||
| 709 | $enc = ENC_ASCII; // current encoding mode |
||
| 710 | $pos = 0; // current position |
||
| 711 | $cw = array(); // array of codewords to be returned |
||
| 712 | $cw_num = 0; // number of data codewords |
||
| 713 | $data_length = strlen($data); // number of chars |
||
| 714 | while ($pos < $data_length) { |
||
| 715 | // set last used encoding |
||
| 716 | $this->last_enc = $enc; |
||
| 717 | switch ($enc) { |
||
| 718 | case ENC_ASCII: { // STEP B. While in ASCII encodation |
||
| 719 | if (($data_length > 1) AND ($pos < ($data_length - 1)) AND ($this->isCharMode(ord($data[$pos]), ENC_ASCII_NUM) AND $this->isCharMode(ord($data[$pos + 1]), ENC_ASCII_NUM))) { |
||
| 720 | // 1. If the next data sequence is at least 2 consecutive digits, encode the next two digits as a double digit in ASCII mode. |
||
| 721 | $cw[] = (intval(substr($data, $pos, 2)) + 130); |
||
| 722 | ++$cw_num; |
||
| 723 | $pos += 2; |
||
| 724 | } else { |
||
| 725 | // 2. If the look-ahead test (starting at step J) indicates another mode, switch to that mode. |
||
| 726 | $newenc = $this->lookAheadTest($data, $pos, $enc); |
||
| 727 | if ($newenc != $enc) { |
||
| 728 | // switch to new encoding |
||
| 729 | $enc = $newenc; |
||
| 730 | $cw[] = $this->getSwitchEncodingCodeword($enc); |
||
| 731 | ++$cw_num; |
||
| 732 | } else { |
||
| 733 | // get new byte |
||
| 734 | $chr = ord($data[$pos]); |
||
| 735 | ++$pos; |
||
| 736 | if ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
| 737 | // 3. If the next data character is extended ASCII (greater than 127) encode it in ASCII mode first using the Upper Shift (value 235) character. |
||
| 738 | $cw[] = 235; |
||
| 739 | $cw[] = ($chr - 127); |
||
| 740 | $cw_num += 2; |
||
| 741 | } else { |
||
| 742 | // 4. Otherwise process the next data character in ASCII encodation. |
||
| 743 | $cw[] = ($chr + 1); |
||
| 744 | ++$cw_num; |
||
| 745 | } |
||
| 746 | } |
||
| 747 | } |
||
| 748 | break; |
||
| 749 | } |
||
| 750 | case ENC_C40 : // Upper-case alphanumeric |
||
| 751 | case ENC_TXT : // Lower-case alphanumeric |
||
| 752 | case ENC_X12 : { // ANSI X12 |
||
| 753 | $temp_cw = array(); |
||
| 754 | $p = 0; |
||
| 755 | $epos = $pos; |
||
| 756 | // get charset ID |
||
| 757 | $set_id = $this->chset_id[$enc]; |
||
| 758 | // get basic charset for current encoding |
||
| 759 | $charset = $this->chset[$set_id]; |
||
| 760 | do { |
||
| 761 | // 2. process the next character in C40 encodation. |
||
| 762 | $chr = ord($data[$epos]); |
||
| 763 | ++$epos; |
||
| 764 | // check for extended character |
||
| 765 | if ($chr & 0x80) { |
||
| 766 | if ($enc == ENC_X12) { |
||
| 767 | return false; |
||
| 768 | } |
||
| 769 | $chr = ($chr & 0x7f); |
||
| 770 | $temp_cw[] = 1; // shift 2 |
||
| 771 | $temp_cw[] = 30; // upper shift |
||
| 772 | $p += 2; |
||
| 773 | } |
||
| 774 | if (isset($charset[$chr])) { |
||
| 775 | $temp_cw[] = $charset[$chr]; |
||
| 776 | ++$p; |
||
| 777 | } else { |
||
| 778 | if (isset($this->chset['SH1'][$chr])) { |
||
| 779 | $temp_cw[] = 0; // shift 1 |
||
| 780 | $shiftset = $this->chset['SH1']; |
||
| 781 | } elseif (isset($this->chset['SH2'][$chr])) { |
||
| 782 | $temp_cw[] = 1; // shift 2 |
||
| 783 | $shiftset = $this->chset['SH2']; |
||
| 784 | } elseif (($enc == ENC_C40) AND isset($this->chset['S3C'][$chr])) { |
||
| 785 | $temp_cw[] = 2; // shift 3 |
||
| 786 | $shiftset = $this->chset['S3C']; |
||
| 787 | } elseif (($enc == ENC_TXT) AND isset($this->chset['S3T'][$chr])) { |
||
| 788 | $temp_cw[] = 2; // shift 3 |
||
| 789 | $shiftset = $this->chset['S3T']; |
||
| 790 | } else { |
||
| 791 | return false; |
||
| 792 | } |
||
| 793 | $temp_cw[] = $shiftset[$chr]; |
||
| 794 | $p += 2; |
||
| 795 | } |
||
| 796 | if ($p >= 3) { |
||
| 797 | $c1 = array_shift($temp_cw); |
||
| 798 | $c2 = array_shift($temp_cw); |
||
| 799 | $c3 = array_shift($temp_cw); |
||
| 800 | $p -= 3; |
||
| 801 | $tmp = ((1600 * $c1) + (40 * $c2) + $c3 + 1); |
||
| 802 | $cw[] = ($tmp >> 8); |
||
| 803 | $cw[] = ($tmp % 256); |
||
| 804 | $cw_num += 2; |
||
| 805 | $pos = $epos; |
||
| 806 | // 1. If the C40 encoding is at the point of starting a new double symbol character and if the look-ahead test (starting at step J) indicates another mode, switch to that mode. |
||
| 807 | $newenc = $this->lookAheadTest($data, $pos, $enc); |
||
| 808 | if ($newenc != $enc) { |
||
| 809 | // switch to new encoding |
||
| 810 | $enc = $newenc; |
||
| 811 | if ($enc != ENC_ASCII) { |
||
| 812 | // set unlatch character |
||
| 813 | $cw[] = $this->getSwitchEncodingCodeword(ENC_ASCII); |
||
| 814 | ++$cw_num; |
||
| 815 | } |
||
| 816 | $cw[] = $this->getSwitchEncodingCodeword($enc); |
||
| 817 | ++$cw_num; |
||
| 818 | $pos -= $p; |
||
| 819 | $p = 0; |
||
| 820 | break; |
||
| 821 | } |
||
| 822 | } |
||
| 823 | } while (($p > 0) AND ($epos < $data_length)); |
||
| 824 | // process last data (if any) |
||
| 825 | if ($p > 0) { |
||
| 826 | // get remaining number of data symbols |
||
| 827 | $cwr = ($this->getMaxDataCodewords($cw_num) - $cw_num); |
||
| 828 | if (($cwr == 1) AND ($p == 1)) { |
||
| 829 | // d. If one symbol character remains and one C40 value (data character) remains to be encoded |
||
| 830 | $c1 = array_shift($temp_cw); |
||
| 831 | --$p; |
||
| 832 | $cw[] = ($chr + 1); |
||
| 833 | ++$cw_num; |
||
| 834 | $pos = $epos; |
||
| 835 | $enc = ENC_ASCII; |
||
| 836 | $this->last_enc = $enc; |
||
| 837 | } elseif (($cwr == 2) AND ($p == 1)) { |
||
| 838 | // c. If two symbol characters remain and only one C40 value (data character) remains to be encoded |
||
| 839 | $c1 = array_shift($temp_cw); |
||
| 840 | --$p; |
||
| 841 | $cw[] = 254; |
||
| 842 | $cw[] = ($chr + 1); |
||
| 843 | $cw_num += 2; |
||
| 844 | $pos = $epos; |
||
| 845 | $enc = ENC_ASCII; |
||
| 846 | $this->last_enc = $enc; |
||
| 847 | } elseif (($cwr == 2) AND ($p == 2)) { |
||
| 848 | // b. If two symbol characters remain and two C40 values remain to be encoded |
||
| 849 | $c1 = array_shift($temp_cw); |
||
| 850 | $c2 = array_shift($temp_cw); |
||
| 851 | $p -= 2; |
||
| 852 | $tmp = ((1600 * $c1) + (40 * $c2) + 1); |
||
| 853 | $cw[] = ($tmp >> 8); |
||
| 854 | $cw[] = ($tmp % 256); |
||
| 855 | $cw_num += 2; |
||
| 856 | $pos = $epos; |
||
| 857 | $enc = ENC_ASCII; |
||
| 858 | $this->last_enc = $enc; |
||
| 859 | } else { |
||
| 860 | // switch to ASCII encoding |
||
| 861 | if ($enc != ENC_ASCII) { |
||
| 862 | $enc = ENC_ASCII; |
||
| 863 | $this->last_enc = $enc; |
||
| 864 | $cw[] = $this->getSwitchEncodingCodeword($enc); |
||
| 865 | ++$cw_num; |
||
| 866 | $pos = ($epos - $p); |
||
| 867 | } |
||
| 868 | } |
||
| 869 | } |
||
| 870 | break; |
||
| 871 | } |
||
| 872 | case ENC_EDF: { // F. While in EDIFACT (EDF) encodation |
||
| 873 | // initialize temporary array with 0 length |
||
| 874 | $temp_cw = array(); |
||
| 875 | $epos = $pos; |
||
| 876 | $field_length = 0; |
||
| 877 | $newenc = $enc; |
||
| 878 | do { |
||
| 879 | // 2. process the next character in EDIFACT encodation. |
||
| 880 | $chr = ord($data[$epos]); |
||
| 881 | if ($this->isCharMode($chr, ENC_EDF)) { |
||
| 882 | ++$epos; |
||
| 883 | $temp_cw[] = $chr; |
||
| 884 | ++$field_length; |
||
| 885 | } |
||
| 886 | if (($field_length == 4) OR ($epos == $data_length) OR !$this->isCharMode($chr, ENC_EDF)) { |
||
| 887 | if (($epos == $data_length) AND ($field_length < 3)) { |
||
| 888 | $enc = ENC_ASCII; |
||
| 889 | $cw[] = $this->getSwitchEncodingCodeword($enc); |
||
| 890 | ++$cw_num; |
||
| 891 | break; |
||
| 892 | } |
||
| 893 | if ($field_length < 4) { |
||
| 894 | // set unlatch character |
||
| 895 | $temp_cw[] = 0x1f; |
||
| 896 | ++$field_length; |
||
| 897 | // fill empty characters |
||
| 898 | for ($i = $field_length; $i < 4; ++$i) { |
||
| 899 | $temp_cw[] = 0; |
||
| 900 | } |
||
| 901 | $enc = ENC_ASCII; |
||
| 902 | $this->last_enc = $enc; |
||
| 903 | } |
||
| 904 | // encodes four data characters in three codewords |
||
| 905 | $tcw = (($temp_cw[0] & 0x3F) << 2) + (($temp_cw[1] & 0x30) >> 4); |
||
| 906 | if ($tcw > 0) { |
||
| 907 | $cw[] = $tcw; |
||
| 908 | $cw_num++; |
||
| 909 | } |
||
| 910 | $tcw= (($temp_cw[1] & 0x0F) << 4) + (($temp_cw[2] & 0x3C) >> 2); |
||
| 911 | if ($tcw > 0) { |
||
| 912 | $cw[] = $tcw; |
||
| 913 | $cw_num++; |
||
| 914 | } |
||
| 915 | $tcw = (($temp_cw[2] & 0x03) << 6) + ($temp_cw[3] & 0x3F); |
||
| 916 | if ($tcw > 0) { |
||
| 917 | $cw[] = $tcw; |
||
| 918 | $cw_num++; |
||
| 919 | } |
||
| 920 | $temp_cw = array(); |
||
| 921 | $pos = $epos; |
||
| 922 | $field_length = 0; |
||
| 923 | if ($enc == ENC_ASCII) { |
||
| 924 | break; // exit from EDIFACT mode |
||
| 925 | } |
||
| 926 | } |
||
| 927 | } while ($epos < $data_length); |
||
| 928 | break; |
||
| 929 | } |
||
| 930 | case ENC_BASE256: { // G. While in Base 256 (B256) encodation |
||
| 931 | // initialize temporary array with 0 length |
||
| 932 | $temp_cw = array(); |
||
| 933 | $field_length = 0; |
||
| 934 | while (($pos < $data_length) AND ($field_length <= 1555)) { |
||
| 935 | $newenc = $this->lookAheadTest($data, $pos, $enc); |
||
| 936 | if ($newenc != $enc) { |
||
| 937 | // 1. If the look-ahead test (starting at step J) indicates another mode, switch to that mode. |
||
| 938 | $enc = $newenc; |
||
| 939 | break; // exit from B256 mode |
||
| 940 | } else { |
||
| 941 | // 2. Otherwise, process the next character in Base 256 encodation. |
||
| 942 | $chr = ord($data[$pos]); |
||
| 943 | ++$pos; |
||
| 944 | $temp_cw[] = $chr; |
||
| 945 | ++$field_length; |
||
| 946 | } |
||
| 947 | } |
||
| 948 | // set field length |
||
| 949 | if ($field_length <= 249) { |
||
| 950 | $cw[] = $this->get255StateCodeword($field_length, ($cw_num + 1)); |
||
| 951 | ++$cw_num; |
||
| 952 | } else { |
||
| 953 | $cw[] = $this->get255StateCodeword((floor($field_length / 250) + 249), ($cw_num + 1)); |
||
| 954 | $cw[] = $this->get255StateCodeword(($field_length % 250), ($cw_num + 2)); |
||
| 955 | $cw_num += 2; |
||
| 956 | } |
||
| 957 | if (!empty($temp_cw)) { |
||
| 958 | // add B256 field |
||
| 959 | foreach ($temp_cw as $p => $cht) { |
||
| 960 | $cw[] = $this->get255StateCodeword($cht, ($cw_num + $p + 1)); |
||
| 961 | } |
||
| 962 | } |
||
| 963 | break; |
||
| 964 | } |
||
| 965 | } // end of switch enc |
||
| 966 | } // end of while |
||
| 967 | return $cw; |
||
| 968 | } |
||
| 969 | |||
| 970 | /** |
||
| 971 | * Places "chr+bit" with appropriate wrapping within array[]. |
||
| 972 | * (Annex F - ECC 200 symbol character placement) |
||
| 973 | * @param array $marr Array of symbols. |
||
| 974 | * @param int $nrow Number of rows. |
||
| 975 | * @param int $ncol Number of columns. |
||
| 976 | * @param int $row Row number. |
||
| 977 | * @param int $col Column number. |
||
| 978 | * @param int $chr Char byte. |
||
| 979 | * @param int $bit Bit. |
||
| 980 | * @return array |
||
| 981 | * @protected |
||
| 982 | */ |
||
| 983 | protected function placeModule($marr, $nrow, $ncol, $row, $col, $chr, $bit) { |
||
| 984 | if ($row < 0) { |
||
| 985 | $row += $nrow; |
||
| 986 | $col += (4 - (($nrow + 4) % 8)); |
||
| 987 | } |
||
| 988 | if ($col < 0) { |
||
| 989 | $col += $ncol; |
||
| 990 | $row += (4 - (($ncol + 4) % 8)); |
||
| 991 | } |
||
| 992 | $marr[(($row * $ncol) + $col)] = ((10 * $chr) + $bit); |
||
| 993 | return $marr; |
||
| 994 | } |
||
| 995 | |||
| 996 | /** |
||
| 997 | * Places the 8 bits of a utah-shaped symbol character. |
||
| 998 | * (Annex F - ECC 200 symbol character placement) |
||
| 999 | * @param array $marr Array of symbols. |
||
| 1000 | * @param int $nrow Number of rows. |
||
| 1001 | * @param int $ncol Number of columns. |
||
| 1002 | * @param int $row Row number. |
||
| 1003 | * @param int $col Column number. |
||
| 1004 | * @param int $chr Char byte. |
||
| 1005 | * @return array |
||
| 1006 | * @protected |
||
| 1007 | */ |
||
| 1008 | protected function placeUtah($marr, $nrow, $ncol, $row, $col, $chr) { |
||
| 1018 | } |
||
| 1019 | |||
| 1020 | /** |
||
| 1021 | * Places the 8 bits of the first special corner case. |
||
| 1022 | * (Annex F - ECC 200 symbol character placement) |
||
| 1023 | * @param array $marr Array of symbols. |
||
| 1024 | * @param int $nrow Number of rows. |
||
| 1025 | * @param int $ncol Number of columns. |
||
| 1026 | * @param int $chr Char byte. |
||
| 1027 | * @return array |
||
| 1028 | * @protected |
||
| 1029 | */ |
||
| 1030 | protected function placeCornerA($marr, $nrow, $ncol, $chr) { |
||
| 1040 | } |
||
| 1041 | |||
| 1042 | /** |
||
| 1043 | * Places the 8 bits of the second special corner case. |
||
| 1044 | * (Annex F - ECC 200 symbol character placement) |
||
| 1045 | * @param array $marr Array of symbols. |
||
| 1046 | * @param int $nrow Number of rows. |
||
| 1047 | * @param int $ncol Number of columns. |
||
| 1048 | * @param int $chr Char byte. |
||
| 1049 | * @return array |
||
| 1050 | * @protected |
||
| 1051 | */ |
||
| 1052 | protected function placeCornerB($marr, $nrow, $ncol, $chr) { |
||
| 1062 | } |
||
| 1063 | |||
| 1064 | /** |
||
| 1065 | * Places the 8 bits of the third special corner case. |
||
| 1066 | * (Annex F - ECC 200 symbol character placement) |
||
| 1067 | * @param array $marr Array of symbols. |
||
| 1068 | * @param int $nrow Number of rows. |
||
| 1069 | * @param int $ncol Number of columns. |
||
| 1070 | * @param int $chr Char byte. |
||
| 1071 | * @return array |
||
| 1072 | * @protected |
||
| 1073 | */ |
||
| 1074 | protected function placeCornerC($marr, $nrow, $ncol, $chr) { |
||
| 1075 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-3, 0, $chr, 1); |
||
| 1076 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-2, 0, $chr, 2); |
||
| 1077 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 3); |
||
| 1078 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4); |
||
| 1079 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5); |
||
| 1080 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 6); |
||
| 1081 | $marr = $this->placeModule($marr, $nrow, $ncol, 2, $ncol-1, $chr, 7); |
||
| 1082 | $marr = $this->placeModule($marr, $nrow, $ncol, 3, $ncol-1, $chr, 8); |
||
| 1083 | return $marr; |
||
| 1084 | } |
||
| 1085 | |||
| 1086 | /** |
||
| 1087 | * Places the 8 bits of the fourth special corner case. |
||
| 1088 | * (Annex F - ECC 200 symbol character placement) |
||
| 1089 | * @param array $marr Array of symbols. |
||
| 1090 | * @param int $nrow Number of rows. |
||
| 1091 | * @param int $ncol Number of columns. |
||
| 1092 | * @param int $chr Char byte. |
||
| 1093 | * @return array |
||
| 1094 | * @protected |
||
| 1095 | */ |
||
| 1096 | protected function placeCornerD($marr, $nrow, $ncol, $chr) { |
||
| 1106 | } |
||
| 1107 | |||
| 1108 | /** |
||
| 1109 | * Build a placement map. |
||
| 1110 | * (Annex F - ECC 200 symbol character placement) |
||
| 1111 | * @param int $nrow Number of rows. |
||
| 1112 | * @param int $ncol Number of columns. |
||
| 1113 | * @return array |
||
| 1114 | * @protected |
||
| 1115 | */ |
||
| 1116 | protected function getPlacementMap($nrow, $ncol) { |
||
| 1171 | } |
||
| 1172 | |||
| 1173 | } // end DataMatrix class |
||
| 1177 |
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