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Add GS1 support to Aztec Code

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This commit is contained in:
hooper114 2009-01-16 05:50:22 +00:00
parent c7affa89de
commit 2dd4f31da4
4 changed files with 37 additions and 12 deletions
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40
backend/aztec.c
View File

@ -47,25 +47,42 @@ void insert(char binary_string[], int posn, char newbit)
binary_string[posn] = newbit;
}
int aztec_text_process(unsigned char source[], char binary_string[])
int aztec_text_process(unsigned char source[], char binary_string[], int gs1)
{ /* Encode input data into a binary string */
int i, j, k, bytes;
int charmap[ustrlen(source)], typemap[ustrlen(source)], maplength;
int curtable, newtable, lasttable, chartype;
int blockmap[2][ustrlen(source)], blocks;
/* Lookup input string in encoding table */
maplength = 0;
if((gs1) && (i == 0)) {
/* Add FNC1 to beginning of GS1 messages */
charmap[maplength] = 0;
typemap[maplength] = 8;
maplength++;
charmap[maplength] = 400;
typemap[maplength] = 8;
maplength++;
}
for(i = 0; i < ustrlen(source); i++) {
if(source[i] > 127) {
charmap[i] = source[i];
typemap[i] = BINARY;
charmap[maplength] = source[i];
typemap[maplength] = BINARY;
} else {
charmap[i] = AztecSymbolChar[source[i]];
typemap[i] = AztecCodeSet[source[i]];
charmap[maplength] = AztecSymbolChar[source[i]];
typemap[maplength] = AztecCodeSet[source[i]];
}
if((gs1) && (source[i] == '[')) {
/* FNC1 represented by FLG(0) */
charmap[maplength] = 0;
typemap[maplength] = 8;
maplength++;
charmap[maplength] = 400;
typemap[maplength] = 8;
}
maplength++;
}
maplength = ustrlen(source);
/* Look for double character encoding possibilities */
i = 0;
@ -522,7 +539,11 @@ int aztec_text_process(unsigned char source[], char binary_string[])
case LOWER:
case MIXED:
case PUNC:
if(charmap[i] >= 400) {
concat(binary_string, tribit[charmap[i] - 400]);
} else {
concat(binary_string, hexbit[charmap[i]]);
}
break;
case DIGIT:
concat(binary_string, pentbit[charmap[i]]);
@ -556,12 +577,13 @@ int aztec(struct zint_symbol *symbol, unsigned char source[])
unsigned int data_part[1500], ecc_part[840];
unsigned char desc_data[4], desc_ecc[6];
int err_code, ecc_level, compact, data_length, data_maxsize, codeword_size, adjusted_length;
int remainder, padbits, count;
int remainder, padbits, count, gs1;
memset(binary_string,0,20000);
memset(adjusted_string,0,20000);
err_code = aztec_text_process(source, binary_string);
if(symbol->input_mode == GS1_MODE) { gs1 = 1; } else { gs1 = 0; }
err_code = aztec_text_process(source, binary_string, gs1);
if(err_code != 0) {
strcpy(symbol->errtxt, "Input too long or too many extended ASCII characters [921]");

2
backend/aztec.h
View File

@ -245,6 +245,8 @@ static char *pentbit[32] = {"0000", "0001", "0010", "0011", "0100", "0101", "011
"1010", "1011", "1100", "1101", "1110", "1111"
};
static char *tribit[8] = {"000", "001", "010", "011", "100", "101", "110", "111"};
static int AztecSizes[32] = { /* Codewords per symbol */
21, 48, 60, 88, 120, 156, 196, 240, 230, 272, 316, 364, 416, 470, 528, 588, 652, 720, 790,
864, 940, 1020, 920, 992, 1066, 1144, 1224, 1306, 1392, 1480, 1570, 1664

2
backend/gs1.c
View File

@ -90,7 +90,7 @@ int gs1_verify(struct zint_symbol *symbol, unsigned char source[], char reduced[
ai_latch = 0;
for(i = 0; i < ustrlen(source); i++) {
ai_length += j;
if((j == 1) && ((source[i] < '0') || (source[i] > '9'))) { ai_latch = 1; }
if(((j == 1) && (source[i] != ']')) && ((source[i] < '0') || (source[i] > '9'))) { ai_latch = 1; }
if(source[i] == '[') { bracket_level++; j = 1; }
if(source[i] == ']') {
bracket_level--;

1
backend/library.c
View File

@ -201,6 +201,7 @@ int gs1_compliant(int symbology)
case BARCODE_RSS14_OMNI_CC:
case BARCODE_RSS_EXPSTACK_CC:
case BARCODE_CODE16K:
case BARCODE_AZTEC:
result = 1;
break;
}