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Correction to special case row handling GS1-DataBar Stacked

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This commit is contained in:
Robin Stuart 2016-10-09 14:10:39 +01:00
parent f145680739
commit ee12f3569b
1 changed files with 53 additions and 9 deletions
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62
backend/rss.c
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@ -1167,6 +1167,7 @@ int general_rules(char field[], char type[]) {
/* Handles all data encodation from section 7.2.5 of ISO/IEC 24724 */
int rss_binary_string(struct zint_symbol *symbol, char source[], char binary_string[]) {
int encoding_method, i, mask, j, read_posn, latch, debug = 0, last_mode = ISOIEC;
int symbol_characters, characters_per_row;
#ifndef _MSC_VER
char general_field[strlen(source) + 1], general_field_type[strlen(source) + 1];
#else
@ -1914,10 +1915,30 @@ int rss_binary_string(struct zint_symbol *symbol, char source[], char binary_str
if (remainder == 12) {
remainder = 0;
}
if (strlen(binary_string) < 36) {
remainder = 36 - strlen(binary_string);
symbol_characters = ((strlen(binary_string) + remainder) / 12) + 1;
if ((symbol->symbology == BARCODE_RSS_EXPSTACK) || (symbol->symbology == BARCODE_RSS_EXPSTACK_CC)) {
characters_per_row = symbol->option_2 * 2;
if ((characters_per_row < 2) || (characters_per_row > 20)) {
characters_per_row = 4;
}
if ((symbol_characters % characters_per_row) == 1) {
symbol_characters++;
}
if (symbol_characters < 4) {
symbol_characters = 4;
}
}
if (symbol_characters < 3) {
symbol_characters = 3;
}
remainder = (12 * (symbol_characters - 1)) - strlen(binary_string);
if (latch == 1) {
/* There is still one more numeric digit to encode */
if (debug) printf("Adding extra (odd) numeric digit\n");
@ -1958,9 +1979,30 @@ int rss_binary_string(struct zint_symbol *symbol, char source[], char binary_str
if (remainder == 12) {
remainder = 0;
}
if (strlen(binary_string) < 36) {
remainder = 36 - strlen(binary_string);
symbol_characters = ((strlen(binary_string) + remainder) / 12) + 1;
if ((symbol->symbology == BARCODE_RSS_EXPSTACK) || (symbol->symbology == BARCODE_RSS_EXPSTACK_CC)) {
characters_per_row = symbol->option_2 * 2;
if ((characters_per_row < 2) || (characters_per_row > 20)) {
characters_per_row = 4;
}
if ((symbol_characters % characters_per_row) == 1) {
symbol_characters++;
}
if (symbol_characters < 4) {
symbol_characters = 4;
}
}
if (symbol_characters < 3) {
symbol_characters = 3;
}
remainder = (12 * (symbol_characters - 1)) - strlen(binary_string);
if (debug) printf("Resultant binary = %s\n", binary_string);
if (debug) printf("\tLength: %d\n", (int) strlen(binary_string));
}
@ -1984,10 +2026,11 @@ int rss_binary_string(struct zint_symbol *symbol, char source[], char binary_str
padstring[remainder] = '\0';
strcat(binary_string, padstring);
/* Patch variable length symbol bit field */
d1 = ((strlen(binary_string) / 12) + 1) & 1;
if (strlen(binary_string) <= 156) {
d1 = symbol_characters & 1;
if (symbol_characters <= 14) {
d2 = 0;
} else {
d2 = 1;
@ -2255,6 +2298,7 @@ int rssexpanded(struct zint_symbol *symbol, unsigned char source[], int src_len)
*/
codeblocks = (data_chars + 1) / 2 + ((data_chars + 1) % 2);
if ((symbol->option_2 < 1) || (symbol->option_2 > 10)) {
symbol->option_2 = 2;
}
@ -2334,7 +2378,7 @@ int rssexpanded(struct zint_symbol *symbol, unsigned char source[], int src_len)
latch = current_row & 1 ? '0' : '1';
if ((current_row == stack_rows) && (codeblocks != (current_row * symbol->option_2)) &&
(((current_row * symbol->option_2) - codeblocks) & 1)) {
((current_row & 1) == 0) && ((symbol->option_2 & 1) == 0)) {
/* Special case bottom row */
special_case_row = 1;
sub_elements[0] = 2;