+++ /dev/null
-/*
- * code39.c -- encoding for code39
- *
- * Copyright (c) 1999 Alessandro Rubini (rubini@gnu.org)
- * Copyright (c) 1999 Prosa Srl. (prosa@prosa.it)
- * Copyright (c) 2001 Nathan D. Holmes / FedEx Services (ndholmes@fedex.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-
-#include "barcode.h"
-
-
-/* this is ordered in decades to simplify encoding */
-static char alphabet[] =
- "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%";
-
-static char *codeset[] = {
- "131112", "111213", "111312", "111411", "121113", /* 0 - 4 */
- "121212", "121311", "111114", "131211", "141111", /* 5 - 9 */
- "211113", "211212", "211311", "221112", "221211", /* A - E */
- "231111", "112113", "112212", "112311", "122112", /* F - J */
- "132111", "111123", "111222", "111321", "121122", /* K - O */
- "131121", "212112", "212211", "211122", "211221", /* P - T */
- "221121", "222111", "112122", "112221", "122121", /* U - Y */
- "123111", "121131", "311112", "311211", "321111", /* Z - $ */
- "112131", "113121", "211131", "121221", "312111", /* / - (%) */
- "311121", "122211", "111141" /* (/) - (terminator) */
-};
-
-
-/* 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001111111111111111111111111111 */
-/* 00000000001111111111222222222233333333334444444444555555555566666666667777777777888888888899999999990000000000111111111122222222 */
-/* 01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567 */
-static char shiftset[] =
- "%$$$$$$$$$$$$$$$$$$$$$$$$$$%%%%% /// ///// / /%%%%%% %%%%%%++++++++++++++++++++++++++%%%%%";
-static char shiftset2[] =
- "UABCDEFGHIJKLMNOPQRSTUVWXYZABCDE ABC FGHIJ L ZFGHIJV KLMNOWABCDEFGHIJLKMNOPQRSTUVWXYZPQRST";
-
-#define START_STOP 47
-#define EXTEND_DOLLAR 43
-#define EXTEND_PERCENT 44
-#define EXTEND_SLASH 45
-#define EXTEND_PLUS 46
-
-/*
- * Check that the text can be encoded. Returns 0 or -1.
- * All of ASCII-7 is accepted.
- */
-int Barcode_93_verify(unsigned char *text)
-{
- int i;
-
- if (!strlen(text))
- return -1;
- for (i=0; text[i]; i++) {
-
- /* Test if beyond the range of 7-bit ASCII */
- if ((int)text[i] > 127)
- return -1;
- }
- return 0;
-}
-
-/*
- * The encoding functions fills the "partial" and "textinfo" fields.
- * Lowercase chars are converted to uppercase
- */
-int Barcode_93_encode(struct Barcode_Item *bc)
-{
- static unsigned char *text;
- static char *partial; /* dynamic */
- static char *textinfo; /* dynamic */
- char *c, *textptr;
- int *checksum_str;
- int i, code, textpos, checksum_len=0;
- int c_checksum = 0;
- int k_checksum = 0;
-
- if (bc->partial)
- free(bc->partial);
- if (bc->textinfo)
- free(bc->textinfo);
- bc->partial = bc->textinfo = NULL; /* safe */
-
- if (!bc->encoding)
- bc->encoding = strdup("code 93");
-
- text = bc->ascii;
- if (!text) {
- bc->error = EINVAL;
- return -1;
- }
-
- /* the partial code is 6 * (head + 2* text + 2* check + tail) + margin + term. */
- partial = malloc( (strlen(text) *2 + 4) * 6 +2);
- if (!partial) {
- bc->error = errno;
- return -1;
- }
-
- checksum_str = (int *)malloc( (strlen(text) + 3) * 2 * sizeof(int));
- if (!checksum_str) {
- free(partial);
- bc->error = errno;
- return -1;
- }
-
- /* the text information is at most "nnn:fff:c " * strlen +term */
- textinfo = malloc(10*strlen(text) + 2);
- if (!textinfo) {
- bc->error = errno;
- free(partial);
- free(checksum_str);
- return -1;
- }
-
- textptr = textinfo;
- textpos = 22;
- strcpy(partial, "0");
- strcat(partial, codeset[START_STOP]);
-
- for (i=0; i<strlen(text); i++) {
- c = strchr(alphabet, text[i]);
- if (!c) {
- /* Encode the shift character */
- switch(shiftset[text[i]])
- {
- case '$':
- code = EXTEND_DOLLAR;
- break;
- case '%':
- code = EXTEND_PERCENT;
- break;
- case '/':
- code = EXTEND_SLASH;
- break;
- case '+':
- code = EXTEND_PLUS;
- break;
- default:
- code = 0;
- break;
- }
-
- strcat(partial, codeset[code]);
- checksum_str[checksum_len++] = code;
-
- /* Encode the second character */
- code = strchr(alphabet, shiftset2[text[i]]) - alphabet;
- strcat(partial, codeset[code]);
- checksum_str[checksum_len++] = code;
- } else {
- /* Character is natively supported by the symbology, encode directly */
- code = c - alphabet;
- strcat(partial, codeset[c -alphabet]);
- checksum_str[checksum_len++] = code;
- }
- sprintf(textptr, "%i:12:%c ", textpos, text[i]);
- textptr += strlen(textptr);
- /*
- * width of each code is 9; composed codes are 18, but aligning
- * the text behind the right bars would be ugly, so use 9 anyways
- */
- textpos += 9;
- }
- c_checksum=0;
- k_checksum=0;
-
- /* Add the checksum */
- if ( (bc->flags & BARCODE_NO_CHECKSUM)==0 )
- {
- for(i=1; i<=checksum_len; i++)
- {
- c_checksum += i * (int)checksum_str[checksum_len - i];
- k_checksum += (i+1) * (int)checksum_str[checksum_len - i];
- }
-
- c_checksum = c_checksum % 47;
- k_checksum += c_checksum;
- k_checksum = k_checksum % 47;
-
- strcat(partial, codeset[c_checksum]);
- strcat(partial, codeset[k_checksum]);
-
- }
- strcat(partial, codeset[START_STOP]); /* end */
-
- /* Encodes final 1-unit width bar to turn the start character into a stop char */
- strcat(partial, "1");
- bc->partial = partial;
- bc->textinfo = textinfo;
-
- return 0;
-}
projects / glabels / blobdiff