mirror of
https://github.com/zint/zint
synced 2024-11-16 20:57:25 +13:00
Dotcode: correct encoding of HT/FS/GS/RS when shifting to code set B
Also updated references to specification annex to match latest version Bug reported by Nico Gunkel as part of #181
This commit is contained in:
Robin Stuart
parent
8565c14437
commit
53d5187853
@ -554,16 +554,17 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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}
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}
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/* Step B */
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if ((input_position == length - 1) && (inside_macro == 100)) {
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// inside_macro only gets set to 100 if the last character is EOT
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input_position++;
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done = 1;
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if (debug) {
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printf("A ");
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printf("B ");
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}
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}
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/* Step B1 */
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/* Step C1 */
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if ((!done) && (encoding_mode == 'C')) {
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if ((array_length == 0) && (length > 9)) {
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if ((source[input_position] == '[')
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@ -583,7 +584,7 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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inside_macro = 97;
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done = 1;
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if (debug) {
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printf("B1/1 ");
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printf("C1/1 ");
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}
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}
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@ -596,7 +597,7 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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inside_macro = 98;
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done = 1;
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if (debug) {
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printf("B1/2 ");
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printf("C1/2 ");
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}
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}
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@ -609,7 +610,7 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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inside_macro = 99;
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done = 1;
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if (debug) {
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printf("B1/3 ");
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printf("C1/3 ");
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}
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}
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}
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@ -624,14 +625,14 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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inside_macro = 100;
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done = 1;
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if (debug) {
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printf("B1/4 ");
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printf("C1/4 ");
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}
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}
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}
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}
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}
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/* Step B2 */
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/* Step C2 */
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if ((!done) && (encoding_mode == 'C')) {
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if (seventeen_ten(source, input_position, length)) {
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codeword_array[array_length] = 100; // (17)...(10)
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@ -645,7 +646,7 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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input_position += 10;
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done = 1;
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if (debug) {
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printf("B2/1 ");
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printf("C2/1 ");
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}
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}
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}
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@ -662,12 +663,12 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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array_length++;
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done = 1;
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if (debug) {
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printf("B2/2 ");
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printf("C2/2 ");
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}
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}
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}
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/* Step B3 */
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/* Step C3 */
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if ((!done) && (encoding_mode == 'C')) {
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if (binary(source, length, input_position)) {
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if (n_digits(source, input_position + 1, length) > 0) {
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@ -690,12 +691,12 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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}
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done = 1;
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if (debug) {
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printf("B3 ");
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printf("C3 ");
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}
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}
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}
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/* Step B4 */
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/* Step C4 */
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if ((!done) && (encoding_mode == 'C')) {
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int m = ahead_a(source, input_position, length);
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int n = ahead_b(source, input_position, length);
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@ -709,7 +710,16 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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array_length++;
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for (i = 0; i < n; i++) {
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if (source[input_position] >= 32) {
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codeword_array[array_length] = source[input_position] - 32;
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} else {
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switch(source[input_position]) {
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case 9: codeword_array[array_length] = 97; break; // HT
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case 28: codeword_array[array_length] = 98; break; // FS
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case 29: codeword_array[array_length] = 99; break; // GS
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case 30: codeword_array[array_length] = 100; break; // RS
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}
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}
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array_length++;
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input_position++;
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}
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@ -721,11 +731,11 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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}
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done = 1;
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if (debug) {
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printf("B4 ");
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printf("C4 ");
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}
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}
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/* Step C1 */
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/* Step D1 */
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if ((!done) && (encoding_mode == 'B')) {
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int n = try_c(source, input_position, length);
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@ -745,12 +755,12 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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}
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done = 1;
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if (debug) {
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printf("C1 ");
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printf("D1 ");
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}
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}
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}
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/* Step C2 */
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/* Step D2 */
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if ((!done) && (encoding_mode == 'B')) {
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if ((source[input_position] == '[') && ((symbol->input_mode & 0x07) == GS1_MODE)) {
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codeword_array[array_length] = 107; // FNC1
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@ -758,7 +768,7 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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input_position++;
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done = 1;
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if (debug) {
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printf("C2/1 ");
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printf("D2/1 ");
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}
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} else {
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if (datum_b(source, input_position, length)) {
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@ -795,120 +805,18 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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if (done == 1) {
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array_length++;
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input_position++;
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if (debug) {
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printf("C2/2 ");
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}
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}
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}
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}
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}
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/* Step C3 */
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if ((!done) && (encoding_mode == 'B')) {
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if (binary(source, length, input_position)) {
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if (datum_b(source, input_position + 1, length)) {
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if ((source[input_position] - 128) < 32) {
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codeword_array[array_length] = 110; // Bin Shift A
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array_length++;
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codeword_array[array_length] = source[input_position] - 128 + 64;
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array_length++;
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} else {
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codeword_array[array_length] = 111; // Bin Shift B
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array_length++;
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codeword_array[array_length] = source[input_position] - 128 - 32;
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array_length++;
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}
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input_position++;
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} else {
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codeword_array[array_length] = 112; // Bin Latch
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array_length++;
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encoding_mode = 'X';
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}
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done = 1;
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if (debug) {
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printf("C3 ");
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}
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}
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}
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/* Step C4 */
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if ((!done) && (encoding_mode == 'B')) {
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if (ahead_a(source, input_position, length) == 1) {
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codeword_array[array_length] = 101; // Shift A
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array_length++;
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if (source[input_position] < 32) {
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codeword_array[array_length] = source[input_position] + 64;
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} else {
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codeword_array[array_length] = source[input_position] - 32;
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}
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array_length++;
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input_position++;
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} else {
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codeword_array[array_length] = 102; // Latch A
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array_length++;
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encoding_mode = 'A';
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}
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done = 1;
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if (debug) {
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printf("C4 ");
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}
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}
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/* Step D1 */
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if ((!done) && (encoding_mode == 'A')) {
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int n = try_c(source, input_position, length);
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if (n >= 2) {
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if (n <= 4) {
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codeword_array[array_length] = 103 + (n - 2); // nx Shift C
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array_length++;
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for (i = 0; i < n; i++) {
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codeword_array[array_length] = ((source[input_position] - '0') * 10) + (source[input_position + 1] - '0');
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array_length++;
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input_position += 2;
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}
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} else {
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codeword_array[array_length] = 106; // Latch C
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array_length++;
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encoding_mode = 'C';
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}
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done = 1;
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if (debug) {
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printf("D1 ");
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}
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}
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}
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/* Step D2 */
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if ((!done) && (encoding_mode == 'A')) {
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if ((source[input_position] == '[') && ((symbol->input_mode & 0x07) == GS1_MODE)) {
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codeword_array[array_length] = 107; // FNC1
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array_length++;
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input_position++;
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done = 1;
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if (debug) {
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printf("D2/1 ");
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}
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} else {
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if (datum_a(source, input_position, length)) {
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if (source[input_position] < 32) {
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codeword_array[array_length] = source[input_position] + 64;
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} else {
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codeword_array[array_length] = source[input_position] - 32;
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}
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array_length++;
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input_position++;
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done = 1;
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if (debug) {
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printf("D2/2 ");
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}
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}
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}
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}
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}
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/* Step D3 */
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if ((!done) && (encoding_mode == 'A')) {
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if ((!done) && (encoding_mode == 'B')) {
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if (binary(source, length, input_position)) {
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if (datum_a(source, input_position + 1, length)) {
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if (datum_b(source, input_position + 1, length)) {
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if ((source[input_position] - 128) < 32) {
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codeword_array[array_length] = 110; // Bin Shift A
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array_length++;
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@ -934,6 +842,108 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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}
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/* Step D4 */
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if ((!done) && (encoding_mode == 'B')) {
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if (ahead_a(source, input_position, length) == 1) {
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codeword_array[array_length] = 101; // Shift A
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array_length++;
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if (source[input_position] < 32) {
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codeword_array[array_length] = source[input_position] + 64;
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} else {
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codeword_array[array_length] = source[input_position] - 32;
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}
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array_length++;
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input_position++;
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} else {
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codeword_array[array_length] = 102; // Latch A
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array_length++;
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encoding_mode = 'A';
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}
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done = 1;
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if (debug) {
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printf("D4 ");
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}
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}
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/* Step E1 */
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if ((!done) && (encoding_mode == 'A')) {
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int n = try_c(source, input_position, length);
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if (n >= 2) {
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if (n <= 4) {
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codeword_array[array_length] = 103 + (n - 2); // nx Shift C
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array_length++;
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for (i = 0; i < n; i++) {
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codeword_array[array_length] = ((source[input_position] - '0') * 10) + (source[input_position + 1] - '0');
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array_length++;
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input_position += 2;
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}
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} else {
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codeword_array[array_length] = 106; // Latch C
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array_length++;
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encoding_mode = 'C';
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}
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done = 1;
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if (debug) {
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printf("E1 ");
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}
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}
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}
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/* Step E2 */
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if ((!done) && (encoding_mode == 'A')) {
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if ((source[input_position] == '[') && ((symbol->input_mode & 0x07) == GS1_MODE)) {
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codeword_array[array_length] = 107; // FNC1
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array_length++;
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input_position++;
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done = 1;
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if (debug) {
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printf("E2/1 ");
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}
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} else {
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if (datum_a(source, input_position, length)) {
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if (source[input_position] < 32) {
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codeword_array[array_length] = source[input_position] + 64;
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} else {
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codeword_array[array_length] = source[input_position] - 32;
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}
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array_length++;
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input_position++;
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done = 1;
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if (debug) {
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printf("E2/2 ");
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}
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}
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}
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}
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/* Step E3 */
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if ((!done) && (encoding_mode == 'A')) {
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if (binary(source, length, input_position)) {
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if (datum_a(source, input_position + 1, length)) {
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if ((source[input_position] - 128) < 32) {
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codeword_array[array_length] = 110; // Bin Shift A
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array_length++;
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codeword_array[array_length] = source[input_position] - 128 + 64;
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array_length++;
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} else {
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codeword_array[array_length] = 111; // Bin Shift B
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array_length++;
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codeword_array[array_length] = source[input_position] - 128 - 32;
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array_length++;
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}
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input_position++;
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} else {
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codeword_array[array_length] = 112; // Bin Latch
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array_length++;
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encoding_mode = 'X';
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}
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done = 1;
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if (debug) {
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printf("E3 ");
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}
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}
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}
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/* Step E4 */
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if ((!done) && (encoding_mode == 'A')) {
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int n = ahead_b(source, input_position, length);
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@ -941,7 +951,16 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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codeword_array[array_length] = 95 + n; // nx Shift B
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array_length++;
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for (i = 0; i < n; i++) {
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if (source[input_position] >= 32) {
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codeword_array[array_length] = source[input_position] - 32;
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} else {
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switch(source[input_position]) {
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case 9: codeword_array[array_length] = 97; break; // HT
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case 28: codeword_array[array_length] = 98; break; // FS
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case 29: codeword_array[array_length] = 99; break; // GS
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case 30: codeword_array[array_length] = 100; break; // RS
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}
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}
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array_length++;
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input_position++;
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}
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@ -952,11 +971,11 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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}
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done = 1;
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if (debug) {
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printf("D4 ");
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printf("E4 ");
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}
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}
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/* Step E1 */
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/* Step F1 */
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if ((!done) && (encoding_mode == 'X')) {
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int n = try_c(source, input_position, length);
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@ -989,12 +1008,12 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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}
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done = 1;
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if (debug) {
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printf("E1 ");
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printf("F1 ");
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}
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}
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}
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/* Step E2 */
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/* Step F2 */
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/* Section 5.2.1.1 para D.2.i states:
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* "Groups of six codewords, each valued between 0 and 102, are radix converted from
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* base 103 into five base 259 values..."
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@ -1024,12 +1043,12 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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input_position++;
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done = 1;
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if (debug) {
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printf("E2 ");
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printf("F2 ");
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}
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}
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}
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/* Step E3 */
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/* Step F3 */
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if ((!done) && (encoding_mode == 'X')) {
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/* Empty binary buffer */
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for (i = 0; i < (binary_buffer_size + 1); i++) {
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@ -1054,7 +1073,7 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
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array_length++;
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done = 1;
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if (debug) {
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printf("E3 ");
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printf("F3 ");
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}
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}
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} while (input_position < length);
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@ -1209,12 +1228,10 @@ static void fold_dotstream(char dot_stream[], int width, int height, char dot_ar
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}
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}
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static void apply_mask(int mask, int data_length, unsigned char *masked_codeword_array, unsigned char *codeword_array, int ecc_length, char *dot_stream) {
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static void apply_mask(int mask, int data_length, unsigned char *masked_codeword_array, unsigned char *codeword_array, int ecc_length) {
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int weight = 0;
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int j;
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(void)dot_stream; /* Not currently used */
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switch (mask) {
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case 0:
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masked_codeword_array[0] = 0;
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@ -1413,6 +1430,7 @@ INTERNAL int dotcode(struct zint_symbol *symbol, const unsigned char source[], i
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ecc_length = 3 + (data_length / 2);
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#ifndef _MSC_VER
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unsigned char masked_codeword_array[data_length + 1 + ecc_length];
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#else
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||||
@ -1422,7 +1440,7 @@ INTERNAL int dotcode(struct zint_symbol *symbol, const unsigned char source[], i
|
||||
/* Evaluate data mask options */
|
||||
for (i = 0; i < 4; i++) {
|
||||
|
||||
apply_mask(i, data_length, masked_codeword_array, codeword_array, ecc_length, dot_stream);
|
||||
apply_mask(i, data_length, masked_codeword_array, codeword_array, ecc_length);
|
||||
|
||||
dot_stream_length = make_dotstream(masked_codeword_array, (data_length + ecc_length + 1), dot_stream);
|
||||
|
||||
@ -1454,7 +1472,7 @@ INTERNAL int dotcode(struct zint_symbol *symbol, const unsigned char source[], i
|
||||
if (best_mask <= (height * width) / 2) {
|
||||
for (i = 0; i < 4; i++) {
|
||||
|
||||
apply_mask(i, data_length, masked_codeword_array, codeword_array, ecc_length, dot_stream);
|
||||
apply_mask(i, data_length, masked_codeword_array, codeword_array, ecc_length);
|
||||
|
||||
dot_stream_length = make_dotstream(masked_codeword_array, (data_length + ecc_length + 1), dot_stream);
|
||||
|
||||
@ -1487,7 +1505,7 @@ INTERNAL int dotcode(struct zint_symbol *symbol, const unsigned char source[], i
|
||||
}
|
||||
|
||||
/* Apply best mask */
|
||||
apply_mask(best_mask % 4, data_length, masked_codeword_array, codeword_array, ecc_length, dot_stream);
|
||||
apply_mask(best_mask % 4, data_length, masked_codeword_array, codeword_array, ecc_length);
|
||||
|
||||
dot_stream_length = make_dotstream(masked_codeword_array, (data_length + ecc_length + 1), dot_stream);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user