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gs1: update to latest gs1-syntax-dictionary (cset64, separate

Browse source 
latitude/longitude, mediatype, new AIs 7241, 7242, 8030)
  TODO: integrate gs1-syntax-engine
BWIPP: update to latest (bwipp_dump.ps)
manual: README: pandoc latest
This commit is contained in:
gitlost 2023-07-05 21:26:16 +01:00
parent a324fe90f6
commit 6733e76be4
10 changed files with 727 additions and 597 deletions
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118
backend/gs1.c
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@ -129,6 +129,39 @@ static int cset39(const unsigned char *data, int data_len, int offset, int min,
return 1;
}
/* Validate of character set 64 (GSCN 21-307 Figure 7.11-3) */
static int cset64(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
int *p_err_posn, char err_msg[50]) {
data_len -= offset;
if (data_len < min) {
return 0;
}
if (data_len) {
const unsigned char *d = data + offset;
const unsigned char *const de = d + (data_len > max ? max : data_len);
for (; d < de; d++) {
/* 0-9, A-Z, a-z and "-", "_" */
if ((*d < '0' && *d != '-') || (*d > '9' && *d < 'A') || (*d > 'Z' && *d < 'a' && *d != '_')
|| *d > 'z') {
/* One or two "="s can be used as padding to mod 3 length */
if (*d == '=' && (d + 1 == de || (d + 2 == de && *(d + 1) == '=')) && data_len % 3 == 0) {
break;
}
*p_err_no = 3;
*p_err_posn = d - data + 1;
sprintf(err_msg, "Invalid CSET 64 character '%c'", *d);
return 0;
}
}
}
return 1;
}
/* Check a check digit (GS1 General Specifications 7.9.1) */
static int csum(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
int *p_err_posn, char err_msg[50], const int length_only) {
@ -167,7 +200,6 @@ static int csum(const unsigned char *data, int data_len, int offset, int min, in
/* Check alphanumeric check characters (GS1 General Specifications 7.9.5) */
static int csumalpha(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
int *p_err_posn, char err_msg[50], const int length_only) {
(void)max;
data_len -= offset;
@ -1179,35 +1211,89 @@ static int couponposoffer(const unsigned char *data, int data_len, int offset, i
return 1;
}
/* Check WSG 84 latitude, longitude */
static int latlong(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
/* Check WSG 84 latitude */
static int latitude(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
int *p_err_posn, char err_msg[50], const int length_only) {
(void)max;
data_len -= offset;
if (data_len < min || (data_len && data_len < 20)) {
if (data_len < min || (data_len && data_len < 10)) {
return 0;
}
if (!length_only && data_len) {
const unsigned char *d = data + offset;
const unsigned char *const de = d + (data_len > max ? max : data_len);
uint64_t lat = 0, lng = 0;
uint64_t lat = 0;
for (; d < de; d++) {
if (de - d > 10) {
lat *= 10;
lat += *d - '0';
} else {
lng *= 10;
lng += *d - '0';
}
lat *= 10;
lat += *d - '0';
}
if (lat > 1800000000 || lng > 3600000000) {
if (lat > 1800000000) {
*p_err_no = 3;
*p_err_posn = d - 1 - data + 1 - 10 * (lat > 1800000000);
sprintf(err_msg, "Invalid %s", lat > 1800000000 ? "latitude" : "longitude");
*p_err_posn = d - 1 - data + 1;
strcpy(err_msg, "Invalid latitude");
return 0;
}
}
return 1;
}
/* Check WSG 84 longitude */
static int longitude(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
int *p_err_posn, char err_msg[50], const int length_only) {
data_len -= offset;
if (data_len < min || (data_len && data_len < 10)) {
return 0;
}
if (!length_only && data_len) {
const unsigned char *d = data + offset;
const unsigned char *const de = d + (data_len > max ? max : data_len);
uint64_t lng = 0;
for (; d < de; d++) {
lng *= 10;
lng += *d - '0';
}
if (lng > 3600000000) {
*p_err_no = 3;
*p_err_posn = d - 1 - data + 1;
strcpy(err_msg, "Invalid longitude");
return 0;
}
}
return 1;
}
/* Check AIDC media type (GSCN-22-345 Figure 3.8.22-2) */
static int mediatype(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
int *p_err_posn, char err_msg[50], const int length_only) {
data_len -= offset;
if (data_len < min || (data_len && data_len < 2)) {
return 0;
}
if (!length_only && data_len) {
const unsigned char *d = data + offset;
const unsigned char *const de = d + (data_len > max ? max : data_len);
unsigned int val = 0;
for (; d < de; d++) {
val *= 10;
val += *d - '0';
}
if (val == 0 || (val > 10 && val < 80)) {
*p_err_no = 3;
*p_err_posn = d - data + 1;
strcpy(err_msg, "Invalid AIDC media type");
return 0;
}
}