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Add support for ZXing-C++ verification (zxingcppdecoder)

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DMATAMATRIX: fix look ahead BASE256 use of dm_text_sp_cnt() on switching;
  simplify dm_add_tail()
GUI: check suffixes on save so don't go into error state;
  use native path for Save As clipboard message
CODE128: use gs1_check_digit() for NVE18 and EAN14
This commit is contained in:
gitlost
2021-12-08 18:12:20 +00:00
parent 0641a39530
commit caadc87f7e
22 changed files with 1508 additions and 600 deletions
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25
backend/code128.c
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@ -1011,9 +1011,7 @@ INTERNAL int gs1_128(struct zint_symbol *symbol, unsigned char source[], int len
/* Add check digit if encoding an NVE18 symbol */
INTERNAL int nve18(struct zint_symbol *symbol, unsigned char source[], int length) {
int i, count, check_digit;
int error_number, zeroes;
int factor;
unsigned char ean128_equiv[23];
if (length > 17) {
@ -1031,17 +1029,7 @@ INTERNAL int nve18(struct zint_symbol *symbol, unsigned char source[], int lengt
memset(ean128_equiv + 4, '0', zeroes);
ustrcpy(ean128_equiv + 4 + zeroes, source);
count = 0;
factor = 3;
for (i = 20; i >= 4; i--) {
count += ctoi(ean128_equiv[i]) * factor;
factor ^= 2; /* Toggles 1 and 3 */
}
check_digit = 10 - count % 10;
if (check_digit == 10) {
check_digit = 0;
}
ean128_equiv[21] = itoc(check_digit);
ean128_equiv[21] = gs1_check_digit(ean128_equiv + 4, 17);
ean128_equiv[22] = '\0';
error_number = gs1_128(symbol, ean128_equiv, 22);
@ -1051,7 +1039,6 @@ INTERNAL int nve18(struct zint_symbol *symbol, unsigned char source[], int lengt
/* EAN-14 - A version of EAN-128 */
INTERNAL int ean14(struct zint_symbol *symbol, unsigned char source[], int length) {
int i, count, check_digit;
int error_number, zeroes;
unsigned char ean128_equiv[19];
@ -1070,15 +1057,7 @@ INTERNAL int ean14(struct zint_symbol *symbol, unsigned char source[], int lengt
memset(ean128_equiv + 4, '0', zeroes);
ustrcpy(ean128_equiv + 4 + zeroes, source);
count = 0;
for (i = 16; i >= 4; i--) {
count += i & 1 ? ctoi(ean128_equiv[i]) : 3 * ctoi(ean128_equiv[i]);
}
check_digit = 10 - (count % 10);
if (check_digit == 10) {
check_digit = 0;
}
ean128_equiv[17] = itoc(check_digit);
ean128_equiv[17] = gs1_check_digit(ean128_equiv + 4, 13);
ean128_equiv[18] = '\0';
error_number = gs1_128(symbol, ean128_equiv, 18);