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gs1: csumalpha: improve warning, report both checksum chars

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(ticket #332, props Harald Oehlmann)
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gitlost 2025-03-18 18:47:04 +00:00
parent de8a62ca2a
commit d1bf02e156
3 changed files with 598 additions and 597 deletions
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10
backend/gs1.c
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@ -255,14 +255,8 @@ static int csumalpha(const unsigned char *data, int data_len, int offset, int mi
if (de[0] != c1 || de[1] != c2) {
*p_err_no = 3;
if (de[0] != c1) {
*p_err_posn = (de - data) + 1;
(void) gs1_err_msg_printf_nochk(err_msg, "Bad checksum '%c', expected '%c'", de[0], c1);
} else {
*p_err_posn = (de + 1 - data) + 1;
(void) gs1_err_msg_printf_nochk(err_msg, "Bad checksum '%c', expected '%c'", de[1], c2);
}
return 0;
*p_err_posn = (de - data) + 1;
return gs1_err_msg_printf_nochk(err_msg, "Bad checksum '%.2s', expected '%c%c'", de, c1, c2);
}
}