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zint/backend/upcean.c

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/* upcean.c - Handles UPC, EAN and ISBN
libzint - the open source barcode library
Copyright (C) 2008 - 2021 Robin Stuart <rstuart114@gmail.com>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the project nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
/* vim: set ts=4 sw=4 et : */
#define SODIUM "0123456789+"
#define EAN2 102
#define EAN5 105
#include <stdio.h>
#include "common.h"
/* UPC and EAN tables checked against EN 797:1996 */
static const char *UPCParity0[10] = {
/* Number set for UPC-E symbol (EN Table 4) */
"BBBAAA", "BBABAA", "BBAABA", "BBAAAB", "BABBAA", "BAABBA", "BAAABB",
"BABABA", "BABAAB", "BAABAB"
};
static const char *UPCParity1[10] = {
/* Not covered by BS EN 797:1995 */
"AAABBB", "AABABB", "AABBAB", "AABBBA", "ABAABB", "ABBAAB", "ABBBAA",
"ABABAB", "ABABBA", "ABBABA"
};
static const char *EAN2Parity[4] = {
/* Number sets for 2-digit add-on (EN Table 6) */
"AA", "AB", "BA", "BB"
};
static const char *EAN5Parity[10] = {
/* Number set for 5-digit add-on (EN Table 7) */
"BBAAA", "BABAA", "BAABA", "BAAAB", "ABBAA", "AABBA", "AAABB", "ABABA",
"ABAAB", "AABAB"
};
static const char *EAN13Parity[10] = {
/* Left hand of the EAN-13 symbol (EN Table 3) */
"AAAAA", "ABABB", "ABBAB", "ABBBA", "BAABB", "BBAAB", "BBBAA", "BABAB",
"BABBA", "BBABA"
};
static const char *EANsetA[10] = {
/* Representation set A and C (EN Table 1) */
"3211", "2221", "2122", "1411", "1132", "1231", "1114", "1312", "1213", "3112"
};
static const char *EANsetB[10] = {
/* Representation set B (EN Table 1) */
"1123", "1222", "2212", "1141", "2311", "1321", "4111", "2131", "3121", "2113"
};
/* Calculate the correct check digit for a UPC barcode */
static char upc_check(const char source[], const int length) {
int i, count, check_digit;
count = 0;
for (i = 0; i < length; i++) {
count += (i & 1) ? ctoi(source[i]) : 3 * ctoi(source[i]);
}
check_digit = 10 - (count % 10);
if (check_digit == 10) {
check_digit = 0;
}
return itoc(check_digit);
}
/* UPC A is usually used for 12 digit numbers, but this function takes a source of any length */
static void upca_draw(const char source[], const int length, unsigned char dest[]) {
int i, half_way;
half_way = length / 2;
/* start character */
ustrcat(dest, "111");
for (i = 0; i < length; i++) {
if (i == half_way) {
/* middle character - separates manufacturer no. from product no. */
/* also inverts right hand characters */
ustrcat(dest, "11111");
}
lookup(NEON, EANsetA, source[i], (char *) dest);
}
/* stop character */
ustrcat(dest, "111");
}
/* Make a UPC-A barcode, allowing for composite if `cc_rows` set */
static int upca_cc(struct zint_symbol *symbol, const unsigned char source[], int length, unsigned char dest[],
int cc_rows) {
char gtin[13];
float height;
int error_number = 0;
ustrcpy(gtin, source);
if (length == 11) {
gtin[length++] = upc_check(gtin, 11);
gtin[length] = '\0';
} else {
if (source[length - 1] != upc_check(gtin, 11)) {
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("UPC-A: Invalid check digit %s, gtin: %s, Check digit: %c\n", source, gtin,
upc_check(gtin, 11));
}
strcpy(symbol->errtxt, "270: Invalid check digit");
return ZINT_ERROR_INVALID_CHECK;
}
}
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("UPC-A: %s, gtin: %s, Check digit: %c\n", source, gtin,
length == 11 ? gtin[length] : gtin[length - 1]);
}
upca_draw(gtin, length, dest);
ustrcpy(symbol->text, gtin);
#ifdef COMPLIANT_HEIGHTS
/* BS EN 797:1996 4.5.1 Nominal dimensions 22.85mm / 0.33mm (X) ~ 69.24,
same as minimum GS1 General Specifications 21.0.1 5.12.3.1 */
height = (float) (22.85 / 0.33);
if (symbol->symbology == BARCODE_UPCA_CC) {
symbol->height = height; /* Pass back min row == default height */
} else {
error_number = set_height(symbol, height, height, 0.0f, 0 /*no_errtxt*/);
}
#else
height = 50.0f;
if (symbol->symbology == BARCODE_UPCA_CC) {
symbol->height = height - cc_rows * 2 - 6.0f;
} else {
(void) set_height(symbol, 0.0f, height, 0.0f, 1 /*no_errtxt*/);
}
#endif
return error_number;
}
/* UPC-A */
static int upca(struct zint_symbol *symbol, const unsigned char source[], int length, unsigned char dest[]) {
return upca_cc(symbol, source, length, dest, 0 /*cc_rows*/);
}
/* UPC-E, allowing for composite if `cc_rows` set */
static int upce_cc(struct zint_symbol *symbol, unsigned char source[], int length, unsigned char dest[],
int cc_rows) {
int i, num_system;
char emode, equivalent[12], check_digit, parity[8];
char hrt[9];
float height;
int error_number = 0;
/* Two number systems can be used - system 0 and system 1 */
if ((symbol->symbology != BARCODE_UPCE_CHK && length == 7) || length == 8) {
switch (source[0]) {
case '0': num_system = 0;
break;
case '1': num_system = 1;
break;
default: num_system = 0;
/* First source char ignored */
break;
}
ustrcpy(hrt, source);
for (i = 1; i <= length; i++) {
source[i - 1] = hrt[i];
}
length--;
} else {
/* Length 6 with no check digit, or length 7 with check digit, system 0, insert leading zero */
num_system = 0;
hrt[0] = '0';
hrt[1] = '\0';
ustrncat(hrt, source, length);
}
/* Expand the zero-compressed UPCE code to make a UPCA equivalent (EN Table 5) */
emode = source[5];
for (i = 0; i < 11; i++) {
equivalent[i] = '0';
}
if (num_system == 1) {
equivalent[0] = hrt[0];
}
equivalent[1] = source[0];
equivalent[2] = source[1];
equivalent[11] = '\0';
switch (emode) {
case '0':
case '1':
case '2':
equivalent[3] = emode;
equivalent[8] = source[2];
equivalent[9] = source[3];
equivalent[10] = source[4];
break;
case '3':
equivalent[3] = source[2];
equivalent[9] = source[3];
equivalent[10] = source[4];
if (((source[2] == '0') || (source[2] == '1')) || (source[2] == '2')) {
/* Note 1 - "X3 shall not be equal to 0, 1 or 2" */
strcpy(symbol->errtxt, "271: Invalid UPC-E data");
return ZINT_ERROR_INVALID_DATA;
}
break;
case '4':
equivalent[3] = source[2];
equivalent[4] = source[3];
equivalent[10] = source[4];
if (source[3] == '0') {
/* Note 2 - "X4 shall not be equal to 0" */
strcpy(symbol->errtxt, "272: Invalid UPC-E data");
return ZINT_ERROR_INVALID_DATA;
}
break;
case '5':
case '6':
case '7':
case '8':
case '9':
equivalent[3] = source[2];
equivalent[4] = source[3];
equivalent[5] = source[4];
equivalent[10] = emode;
if (source[4] == '0') {
/* Note 3 - "X5 shall not be equal to 0" */
strcpy(symbol->errtxt, "273: Invalid UPC-E data");
return ZINT_ERROR_INVALID_DATA;
}
break;
}
/* Get the check digit from the expanded UPCA code */
check_digit = upc_check(equivalent, 11);
/* Use the number system and check digit information to choose a parity scheme */
if (num_system == 1) {
strcpy(parity, UPCParity1[ctoi(check_digit)]);
} else {
strcpy(parity, UPCParity0[ctoi(check_digit)]);
}
/* Take all this information and make the barcode pattern */
/* start character */
ustrcat(dest, "111");
for (i = 0; i < length; i++) {
switch (parity[i]) {
case 'A': lookup(NEON, EANsetA, source[i], (char *) dest);
break;
case 'B': lookup(NEON, EANsetB, source[i], (char *) dest);
break;
}
}
/* stop character */
ustrcat(dest, "111111");
if (symbol->symbology != BARCODE_UPCE_CHK) {
hrt[7] = check_digit;
hrt[8] = '\0';
} else {
if (hrt[7] != check_digit) {
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("UPC-E: Invalid check digit %s, equivalent: %s, hrt: %s, Check digit: %c\n", source,
equivalent, hrt, check_digit);
}
strcpy(symbol->errtxt, "274: Invalid check digit");
return ZINT_ERROR_INVALID_CHECK;
}
}
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("UPC-E: %s, equivalent: %s, hrt: %s, Check digit: %c\n", source, equivalent, hrt, check_digit);
}
ustrcpy(symbol->text, hrt);
#ifdef COMPLIANT_HEIGHTS
/* BS EN 797:1996 4.5.1 Nominal dimensions 22.85mm / 0.33mm (X) ~ 69.24,
same as minimum GS1 General Specifications 21.0.1 5.12.3.1 */
height = (float) (22.85 / 0.33);
if (symbol->symbology == BARCODE_UPCE_CC) {
symbol->height = height; /* Pass back min row == default height */
} else {
error_number = set_height(symbol, height, height, 0.0f, 0 /*no_errtxt*/);
}
#else
height = 50.0f;
if (symbol->symbology == BARCODE_UPCE_CC) {
symbol->height = height - cc_rows * 2 - 6.0f;
} else {
(void) set_height(symbol, 0.0f, height, 0.0f, 1 /*no_errtxt*/);
}
#endif
return error_number;
}
/* UPC-E is a zero-compressed version of UPC-A */
static int upce(struct zint_symbol *symbol, unsigned char source[], int length, unsigned char dest[]) {
return upce_cc(symbol, source, length, dest, 0 /*cc_rows*/);
}
/* EAN-2 and EAN-5 add-on codes */
static void add_on(const unsigned char source[], const int length, unsigned char dest[], const int addon_gap) {
char parity[6];
int i, code_type;
/* If an add-on then append with space */
if (addon_gap != 0) {
i = (int) ustrlen(dest);
dest[i] = itoc(addon_gap);
dest[i + 1] = '\0';
}
/* Start character */
ustrcat(dest, "112");
/* Determine EAN2 or EAN5 add-on */
if (length == 2) {
code_type = EAN2;
} else {
code_type = EAN5;
}
/* Calculate parity for EAN2 */
if (code_type == EAN2) {
int code_value, parity_bit;
code_value = (10 * ctoi(source[0])) + ctoi(source[1]);
parity_bit = code_value % 4;
strcpy(parity, EAN2Parity[parity_bit]);
}
if (code_type == EAN5) {
int values[6], parity_sum, parity_bit;
for (i = 0; i < 6; i++) {
values[i] = ctoi(source[i]);
}
parity_sum = (3 * (values[0] + values[2] + values[4]));
parity_sum += (9 * (values[1] + values[3]));
parity_bit = parity_sum % 10;
strcpy(parity, EAN5Parity[parity_bit]);
}
for (i = 0; i < length; i++) {
switch (parity[i]) {
case 'A': lookup(NEON, EANsetA, source[i], (char *) dest);
break;
case 'B': lookup(NEON, EANsetB, source[i], (char *) dest);
break;
}
/* Glyph separator */
if (i != (length - 1)) {
ustrcat(dest, "11");
}
}
}
/* ************************ EAN-13 ****************** */
/* Calculate the correct check digit for a EAN-13 barcode (including ISBN(13)) */
static char ean_check(const char source[], const int length) {
int i;
int count, check_digit;
count = 0;
for (i = 0; i < length; i++) {
count += (i & 1) ? 3 * ctoi(source[i]) : ctoi(source[i]);
}
check_digit = 10 - (count % 10);
if (check_digit == 10) {
check_digit = 0;
}
return itoc(check_digit);
}
static int ean13_cc(struct zint_symbol *symbol, const unsigned char source[], int length, unsigned char dest[],
int cc_rows) {
int i, half_way;
char parity[6];
char gtin[14];
float height;
int error_number = 0;
parity[0] = '\0';
ustrcpy(gtin, source);
/* Add the appropriate check digit */
if (length == 12) {
gtin[length++] = ean_check(gtin, 12);
gtin[length] = '\0';
} else {
if (source[length - 1] != ean_check(gtin, 12)) {
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("EAN-13 Invalid check digit: %s, gtin: %s, Check digit: %c\n", source, gtin,
ean_check(gtin, 12));
}
strcpy(symbol->errtxt, "275: Invalid check digit");
return ZINT_ERROR_INVALID_CHECK;
}
}
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("EAN-13: %s, gtin: %s, Check digit: %c\n", source, gtin, gtin[length - 1]);
}
/* Get parity for first half of the symbol */
lookup(SODIUM, EAN13Parity, gtin[0], parity);
/* Now get on with the cipher */
half_way = 7;
/* start character */
ustrcat(dest, "111");
for (i = 1; i < length; i++) {
if (i == half_way) {
/* middle character - separates manufacturer no. from product no. */
/* also inverses right hand characters */
ustrcat(dest, "11111");
}
if (((i > 1) && (i < 7)) && (parity[i - 2] == 'B')) {
lookup(NEON, EANsetB, gtin[i], (char *) dest);
} else {
lookup(NEON, EANsetA, gtin[i], (char *) dest);
}
}
/* stop character */
ustrcat(dest, "111");
ustrcpy(symbol->text, gtin);
#ifdef COMPLIANT_HEIGHTS
/* BS EN 797:1996 4.5.1 Nominal dimensions 22.85mm / 0.33mm (X) ~ 69.24,
same as minimum GS1 General Specifications 21.0.1 5.12.3.1 */
height = (float) (22.85 / 0.33);
if (symbol->symbology == BARCODE_EANX_CC) {
symbol->height = height; /* Pass back min row == default height */
} else {
error_number = set_height(symbol, height, height, 0.0f, 0 /*no_errtxt*/);
}
#else
height = 50.0f;
if (symbol->symbology == BARCODE_EANX_CC) {
symbol->height = height - cc_rows * 2 - 6.0f;
} else {
(void) set_height(symbol, 0.0f, height, 0.0f, 1 /*no_errtxt*/);
}
#endif
return error_number;
}
static int ean13(struct zint_symbol *symbol, const unsigned char source[], int length, unsigned char dest[]) {
return ean13_cc(symbol, source, length, dest, 0 /*cc_rows*/);
}
static int ean8_cc(struct zint_symbol *symbol, const unsigned char source[], int length, unsigned char dest[],
int cc_rows) {
/* EAN-8 is basically the same as UPC-A but with fewer digits */
char gtin[10];
float height;
int error_number = 0;
ustrcpy(gtin, source);
if (length == 7) {
gtin[length++] = upc_check(gtin, 7);
gtin[length] = '\0';
} else {
if (source[length - 1] != upc_check(gtin, 7)) {
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("EAN-8: Invalid check digit %s, gtin: %s, Check digit: %c\n", source, gtin,
upc_check(gtin, 7));
}
strcpy(symbol->errtxt, "276: Invalid check digit");
return ZINT_ERROR_INVALID_CHECK;
}
}
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("EAN-8: %s, gtin: %s, Check digit: %c\n", source, gtin,
length == 7 ? gtin[length] : gtin[length - 1]);
}
upca_draw(gtin, length, dest);
ustrcpy(symbol->text, gtin);
#ifdef COMPLIANT_HEIGHTS
/* BS EN 797:1996 4.5.1 Nominal dimensions 18.23mm / 0.33mm (X) ~ 55.24,
same as minimum GS1 General Specifications 21.0.1 5.12.3.1 */
height = (float) (18.23 / 0.33);
if (symbol->symbology == BARCODE_EANX_CC) {
symbol->height = height; /* Pass back min row == default height */
} else {
error_number = set_height(symbol, height, height, 0.0f, 0 /*no_errtxt*/);
}
#else
height = 50.0f;
if (symbol->symbology == BARCODE_EANX_CC) {
symbol->height = height - cc_rows * 2 - 6.0f;
} else {
(void) set_height(symbol, 0.0f, height, 0.0f, 1 /*no_errtxt*/);
}
#endif
return error_number;
}
/* Make an EAN-8 barcode when we haven't been given the check digit */
static int ean8(struct zint_symbol *symbol, const unsigned char source[], int length, unsigned char dest[]) {
return ean8_cc(symbol, source, length, dest, 0 /*cc_rows*/);
}
/* For ISBN(10) and SBN only */
static char isbn_check(const unsigned char source[], const int length) {
int i, weight, sum, check;
char check_char;
sum = 0;
weight = 1;
for (i = 0; i < length; i++) { /* Length will always be 9 */
sum += ctoi(source[i]) * weight;
weight++;
}
check = sum % 11;
check_char = itoc(check);
if (check == 10) {
check_char = 'X';
}
return check_char;
}
/* Make an EAN-13 barcode from an SBN or ISBN */
static int isbn(struct zint_symbol *symbol, unsigned char source[], const int src_len, unsigned char dest[]) {
int i, error_number;
char check_digit;
to_upper(source);
error_number = is_sane("0123456789X", source, src_len);
if (error_number == ZINT_ERROR_INVALID_DATA) {
strcpy(symbol->errtxt, "277: Invalid characters in input");
return error_number;
}
/* Input must be 9, 10 or 13 characters */
if (src_len != 9 && src_len != 10 && src_len != 13) {
strcpy(symbol->errtxt, "278: Input wrong length");
return ZINT_ERROR_TOO_LONG;
}
if (src_len == 13) /* Using 13 character ISBN */ {
if (!(((source[0] == '9') && (source[1] == '7')) &&
((source[2] == '8') || (source[2] == '9')))) {
strcpy(symbol->errtxt, "279: Invalid ISBN");
return ZINT_ERROR_INVALID_DATA;
}
check_digit = ean_check((const char *) source, 12);
if (source[src_len - 1] != check_digit) {
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("ISBN: Invalid check digit %s, Check digit: %c\n", source, check_digit);
}
strcpy(symbol->errtxt, "280: Incorrect ISBN check");
return ZINT_ERROR_INVALID_CHECK;
}
source[12] = '\0';
}
if (src_len == 9) /* Using 9 digit SBN */ {
/* Add leading zero */
for (i = 10; i > 0; i--) {
source[i] = source[i - 1];
}
source[0] = '0';
}
if (src_len == 9 || src_len == 10) /* Using 10 digit ISBN or 9 digit SBN padded with leading zero */ {
check_digit = isbn_check(source, 9);
if (check_digit != source[9]) {
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("ISBN(10)/SBN: Invalid check digit %s, Check digit: %c\n", source, check_digit);
}
strcpy(symbol->errtxt, src_len == 9 ? "281: Incorrect SBN check" : "281: Incorrect ISBN check");
return ZINT_ERROR_INVALID_CHECK;
}
for (i = 11; i > 2; i--) {
source[i] = source[i - 3];
}
source[0] = '9';
source[1] = '7';
source[2] = '8';
source[12] = '\0';
}
return ean13(symbol, source, 12, dest);
}
/* Add leading zeroes to EAN and UPC strings */
INTERNAL int ean_leading_zeroes(struct zint_symbol *symbol, const unsigned char source[],
unsigned char local_source[], int *p_with_addon) {
unsigned char first_part[14], second_part[6], zfirst_part[14], zsecond_part[6];
int with_addon = 0;
int first_len = 0, second_len = 0, zfirst_len = 0, zsecond_len = 0, i, h;
h = (int) ustrlen(source);
for (i = 0; i < h; i++) {
if (source[i] == '+') {
with_addon = 1;
} else {
if (with_addon == 0) {
first_len++;
} else {
second_len++;
}
}
}
if (first_len > 13 || second_len > 5) {
return 0;
}
/* Split input into two strings */
for (i = 0; i < first_len; i++) {
first_part[i] = source[i];
}
first_part[first_len] = '\0';
for (i = 0; i < second_len; i++) {
second_part[i] = source[i + first_len + 1];
}
second_part[second_len] = '\0';
/* Calculate target lengths */
if (second_len == 0) {
zsecond_len = 0;
} else {
if (second_len <= 5) {
if (second_len <= 2) {
zsecond_len = 2;
} else {
zsecond_len = 5;
}
}
}
switch (symbol->symbology) {
case BARCODE_EANX:
case BARCODE_EANX_CC:
if (first_len <= 12) {
if (first_len <= 7) {
zfirst_len = 7;
} else {
zfirst_len = 12;
}
}
if (second_len == 0 && symbol->symbology == BARCODE_EANX) { /* No composite EAN-2/5 */
if (first_len <= 5) {
if (first_len <= 2) {
zfirst_len = 2;
} else {
zfirst_len = 5;
}
}
}
break;
case BARCODE_EANX_CHK:
if (first_len <= 13) {
if (first_len <= 8) {
zfirst_len = 8;
} else {
zfirst_len = 13;
}
}
if (second_len == 0) {
if (first_len <= 5) {
if (first_len <= 2) {
zfirst_len = 2;
} else {
zfirst_len = 5;
}
}
}
break;
case BARCODE_UPCA:
case BARCODE_UPCA_CC:
zfirst_len = 11;
break;
case BARCODE_UPCA_CHK:
zfirst_len = 12;
break;
case BARCODE_UPCE:
case BARCODE_UPCE_CC:
if (first_len == 7) {
zfirst_len = 7;
} else if (first_len <= 6) {
zfirst_len = 6;
}
break;
case BARCODE_UPCE_CHK:
if (first_len == 8) {
zfirst_len = 8;
} else if (first_len <= 7) {
zfirst_len = 7;
}
break;
case BARCODE_ISBNX:
if (first_len <= 9) {
zfirst_len = 9;
}
break;
}
/* Add leading zeroes */
zfirst_part[0] = '\0';
for (i = 0; i < (zfirst_len - first_len); i++) {
ustrcat(zfirst_part, "0");
}
ustrcat(zfirst_part, first_part);
zsecond_part[0] = '\0';
for (i = 0; i < (zsecond_len - second_len); i++) {
ustrcat(zsecond_part, "0");
}
ustrcat(zsecond_part, second_part);
/* Copy adjusted data back to local_source */
ustrcat(local_source, zfirst_part);
if (*zsecond_part) {
ustrcat(local_source, "+");
ustrcat(local_source, zsecond_part);
}
if (p_with_addon) {
*p_with_addon = with_addon;
}
return 1; /* Success */
}
INTERNAL int eanx_cc(struct zint_symbol *symbol, unsigned char source[], int src_len, int cc_rows) {
unsigned char first_part[14] = {0}, second_part[6] = {0}, dest[1000] = {0};
unsigned char local_source[20] = {0}; /* Allow 13 + "+" + 5 + 1 */
int latch, reader, writer;
int with_addon;
int error_number, i, plus_count;
int addon_gap = 0;
int first_part_len, second_part_len;
float height;
latch = FALSE;
writer = 0;
if (src_len > 19) {
strcpy(symbol->errtxt, "283: Input too long");
return ZINT_ERROR_TOO_LONG;
}
if (symbol->symbology != BARCODE_ISBNX) {
/* ISBN has its own checking routine */
error_number = is_sane("0123456789+", source, src_len);
if (error_number == ZINT_ERROR_INVALID_DATA) {
strcpy(symbol->errtxt, "284: Invalid characters in data");
return error_number;
}
} else {
error_number = is_sane("0123456789Xx+", source, src_len);
if (error_number == ZINT_ERROR_INVALID_DATA) {
strcpy(symbol->errtxt, "285: Invalid characters in input");
return error_number;
}
}
/* Check for multiple '+' characters */
plus_count = 0;
for (i = 0; i < src_len; i++) {
if (source[i] == '+') {
plus_count++;
}
}
if (plus_count > 1) {
strcpy(symbol->errtxt, "293: Invalid add-on data");
return ZINT_ERROR_INVALID_DATA;
}
/* Add leading zeroes, checking max lengths of parts */
if (!ean_leading_zeroes(symbol, source, local_source, &with_addon)) {
strcpy(symbol->errtxt, "294: Input too long");
return ZINT_ERROR_TOO_LONG;
}
reader = 0;
if (with_addon) {
int local_length = (int) ustrlen(local_source);
do {
if (local_source[reader] == '+') {
first_part[writer] = '\0';
latch = TRUE;
reader++;
writer = 0;
}
if (latch) {
second_part[writer] = local_source[reader];
reader++;
writer++;
} else {
first_part[writer] = local_source[reader];
reader++;
writer++;
}
} while (reader <= local_length);
if (symbol->symbology == BARCODE_UPCA || symbol->symbology == BARCODE_UPCA_CHK
|| symbol->symbology == BARCODE_UPCA_CC) {
addon_gap = symbol->option_2 >= 9 && symbol->option_2 <= 12 ? symbol->option_2 : 9;
} else {
addon_gap = symbol->option_2 >= 7 && symbol->option_2 <= 12 ? symbol->option_2 : 7;
}
} else {
ustrcpy(first_part, local_source);
}
first_part_len = (int) ustrlen(first_part);
switch (symbol->symbology) {
case BARCODE_EANX:
case BARCODE_EANX_CHK:
switch (first_part_len) {
case 2: add_on(first_part, first_part_len, dest, 0);
ustrcpy(symbol->text, first_part);
#ifdef COMPLIANT_HEIGHTS
/* 21.9mm from GS1 General Specifications 5.2.6.6, Figure 5.2.6.6-5 */
height = (float) (21.9 / 0.33); /* 21.9mm / 0.33mm ~ 66.36 */
error_number = set_height(symbol, height, height, 0.0f, 0 /*no_errtxt*/);
#else
height = 50.0f;
(void) set_height(symbol, 0.0f, height, 0.0f, 1 /*no_errtxt*/);
#endif
break;
case 5: add_on(first_part, first_part_len, dest, 0);
ustrcpy(symbol->text, first_part);
#ifdef COMPLIANT_HEIGHTS
/* 21.9mm from GS1 General Specifications 5.2.6.6, Figure 5.2.6.6-6 */
height = (float) (21.9 / 0.33); /* 21.9mm / 0.33mm ~ 66.36 */
error_number = set_height(symbol, height, height, 0.0f, 0 /*no_errtxt*/);
#else
height = 50.0f;
(void) set_height(symbol, 0.0f, height, 0.0f, 1 /*no_errtxt*/);
#endif
break;
case 7:
case 8: error_number = ean8(symbol, first_part, first_part_len, dest);
break;
case 12:
case 13: error_number = ean13(symbol, first_part, first_part_len, dest);
break;
default: strcpy(symbol->errtxt, "286: Input wrong length");
return ZINT_ERROR_TOO_LONG;
}
break;
case BARCODE_EANX_CC:
switch (first_part_len) { /* Adds vertical separator bars according to ISO/IEC 24723 section 11.4 */
case 7: set_module(symbol, symbol->rows, 1);
set_module(symbol, symbol->rows, 67);
set_module(symbol, symbol->rows + 1, 0);
set_module(symbol, symbol->rows + 1, 68);
set_module(symbol, symbol->rows + 2, 1);
set_module(symbol, symbol->rows + 2, 67);
symbol->row_height[symbol->rows] = 2;
symbol->row_height[symbol->rows + 1] = 2;
symbol->row_height[symbol->rows + 2] = 2;
symbol->rows += 3;
error_number = ean8_cc(symbol, first_part, first_part_len, dest, cc_rows);
break;
case 12:
case 13:set_module(symbol, symbol->rows, 1);
set_module(symbol, symbol->rows, 95);
set_module(symbol, symbol->rows + 1, 0);
set_module(symbol, symbol->rows + 1, 96);
set_module(symbol, symbol->rows + 2, 1);
set_module(symbol, symbol->rows + 2, 95);
symbol->row_height[symbol->rows] = 2;
symbol->row_height[symbol->rows + 1] = 2;
symbol->row_height[symbol->rows + 2] = 2;
symbol->rows += 3;
error_number = ean13_cc(symbol, first_part, first_part_len, dest, cc_rows);
break;
default: strcpy(symbol->errtxt, "287: Input wrong length");
return ZINT_ERROR_TOO_LONG;
}
break;
case BARCODE_UPCA:
case BARCODE_UPCA_CHK:
if ((first_part_len == 11) || (first_part_len == 12)) {
error_number = upca(symbol, first_part, first_part_len, dest);
} else {
strcpy(symbol->errtxt, "288: Input wrong length");
return ZINT_ERROR_TOO_LONG;
}
break;
case BARCODE_UPCA_CC:
if (first_part_len == 11 || first_part_len == 12) {
set_module(symbol, symbol->rows, 1);
set_module(symbol, symbol->rows, 95);
set_module(symbol, symbol->rows + 1, 0);
set_module(symbol, symbol->rows + 1, 96);
set_module(symbol, symbol->rows + 2, 1);
set_module(symbol, symbol->rows + 2, 95);
symbol->row_height[symbol->rows] = 2;
symbol->row_height[symbol->rows + 1] = 2;
symbol->row_height[symbol->rows + 2] = 2;
symbol->rows += 3;
error_number = upca_cc(symbol, first_part, first_part_len, dest, cc_rows);
} else {
strcpy(symbol->errtxt, "289: Input wrong length");
return ZINT_ERROR_TOO_LONG;
}
break;
case BARCODE_UPCE:
case BARCODE_UPCE_CHK:
if ((first_part_len >= 6) && (first_part_len <= (symbol->symbology == BARCODE_UPCE ? 7 : 8))) {
error_number = upce(symbol, first_part, first_part_len, dest);
} else {
strcpy(symbol->errtxt, "290: Input wrong length");
return ZINT_ERROR_TOO_LONG;
}
break;
case BARCODE_UPCE_CC:
if ((first_part_len >= 6) && (first_part_len <= 7)) {
set_module(symbol, symbol->rows, 1);
set_module(symbol, symbol->rows, 51);
set_module(symbol, symbol->rows + 1, 0);
set_module(symbol, symbol->rows + 1, 52);
set_module(symbol, symbol->rows + 2, 1);
set_module(symbol, symbol->rows + 2, 51);
symbol->row_height[symbol->rows] = 2;
symbol->row_height[symbol->rows + 1] = 2;
symbol->row_height[symbol->rows + 2] = 2;
symbol->rows += 3;
error_number = upce_cc(symbol, first_part, first_part_len, dest, cc_rows);
} else {
strcpy(symbol->errtxt, "291: Input wrong length");
return ZINT_ERROR_TOO_LONG;
}
break;
case BARCODE_ISBNX:
error_number = isbn(symbol, first_part, first_part_len, dest);
break;
}
if (error_number >= ZINT_ERROR) {
return error_number;
}
second_part_len = (int) ustrlen(second_part);
switch (second_part_len) {
case 0: break;
case 2:
add_on(second_part, second_part_len, dest, addon_gap);
ustrcat(symbol->text, "+");
ustrcat(symbol->text, second_part);
break;
case 5:
add_on(second_part, second_part_len, dest, addon_gap);
ustrcat(symbol->text, "+");
ustrcat(symbol->text, second_part);
break;
default:
strcpy(symbol->errtxt, "292: Add-on input wrong length");
return ZINT_ERROR_TOO_LONG;
}
expand(symbol, (const char *) dest);
switch (symbol->symbology) {
case BARCODE_EANX_CC:
case BARCODE_UPCA_CC:
case BARCODE_UPCE_CC:
/* shift the symbol to the right one space to allow for separator bars */
for (i = (symbol->width + 1); i >= 1; i--) {
if (module_is_set(symbol, symbol->rows - 1, i - 1)) {
set_module(symbol, symbol->rows - 1, i);
} else {
unset_module(symbol, symbol->rows - 1, i);
}
}
unset_module(symbol, symbol->rows - 1, 0);
symbol->width += 2;
break;
}
return error_number;
}
/* Handle UPC, EAN, ISBN */
INTERNAL int eanx(struct zint_symbol *symbol, unsigned char source[], int src_len) {
return eanx_cc(symbol, source, src_len, 0 /*cc_rows*/);
}
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