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Diffstat (limited to 'backend/code.c')
| -rw-r--r-- | backend/code.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/backend/code.c b/backend/code.c new file mode 100644 index 0000000..9d30e5a --- /dev/null +++ b/backend/code.c @@ -0,0 +1,188 @@ +/* code.c - Handles Code 11, 39, 39+ and 93 */ + +/* + libzint - the open source barcode library + Copyright (C) 2008 Robin Stuart <robin@zint.org.uk> + + 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. +*/ + +/* In version 0.5 this file was 1,553 lines long! */ + +#include <string.h> +#include <stdio.h> +#include <stdlib.h> +#include "common.h" + +#define SODIUM "0123456789-" +#define SILVER "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%abcd" + +static const char *C11Table[11] = {"111121", "211121", "121121", "221111", "112121", "212111", "122111", + "111221", "211211", "211111", "112111"}; + + +/* Code 39 tables checked against ISO/IEC 16388:2007 */ + +/* Incorporates Table A1 */ + +static const char *C39Table[43] = { "1112212111", "2112111121", "1122111121", "2122111111", "1112211121", + "2112211111", "1122211111", "1112112121", "2112112111", "1122112111", "2111121121", + "1121121121", "2121121111", "1111221121", "2111221111", "1121221111", "1111122121", + "2111122111", "1121122111", "1111222111", "2111111221", "1121111221", "2121111211", + "1111211221", "2111211211", "1121211211", "1111112221", "2111112211", "1121112211", + "1111212211", "2211111121", "1221111121", "2221111111", "1211211121", "2211211111", + "1221211111", "1211112121", "2211112111", "1221112111", "1212121111", "1212111211", + "1211121211", "1112121211"}; +/* Code 39 character assignments (Table 1) */ + +static const char *EC39Ctrl[128] = {"%U", "$A", "$B", "$C", "$D", "$E", "$F", "$G", "$H", "$I", "$J", "$K", + "$L", "$M", "$N", "$O", "$P", "$Q", "$R", "$S", "$T", "$U", "$V", "$W", "$X", "$Y", "$Z", + "%A", "%B", "%C", "%D", "%E", " ", "/A", "/B", "/C", "/D", "/E", "/F", "/G", "/H", "/I", "/J", + "/K", "/L", "-", ".", "/O", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "/Z", "%F", + "%G", "%H", "%I", "%J", "%V", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", + "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "%K", "%L", "%M", "%N", "%O", + "%W", "+A", "+B", "+C", "+D", "+E", "+F", "+G", "+H", "+I", "+J", "+K", "+L", "+M", "+N", "+O", + "+P", "+Q", "+R", "+S", "+T", "+U", "+V", "+W", "+X", "+Y", "+Z", "%P", "%Q", "%R", "%S", "%T"}; +/* Encoding the full ASCII character set in Code 39 (Table A2) */ + +static const char *C93Ctrl[128] = {"bU", "aA", "aB", "aC", "aD", "aE", "aF", "aG", "aH", "aI", "aJ", "aK", + "aL", "aM", "aN", "aO", "aP", "aQ", "aR", "aS", "aT", "aU", "aV", "aW", "aX", "aY", "aZ", + "bA", "bB", "bC", "bD", "bE", " ", "cA", "cB", "cC", "cD", "cE", "cF", "cG", "cH", "cI", "cJ", + "cK", "cL", "cM", "cN", "cO", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "cZ", "bF", + "bG", "bH", "bI", "bJ", "bV", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", + "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "bK", "bL", "bM", "bN", "bO", + "bW", "dA", "dB", "dC", "dD", "dE", "dF", "dG", "dH", "dI", "dJ", "dK", "dL", "dM", "dN", "dO", + "dP", "dQ", "dR", "dS", "dT", "dU", "dV", "dW", "dX", "dY", "dZ", "bP", "bQ", "bR", "bS", "bT"}; + +static const char *C93Table[47] = {"131112", "111213", "111312", "111411", "121113", "121212", "121311", + "111114", "131211", "141111", "211113", "211212", "211311", "221112", "221211", "231111", + "112113", "112212", "112311", "122112", "132111", "111123", "111222", "111321", "121122", + "131121", "212112", "212211", "211122", "211221", "221121", "222111", "112122", "112221", + "122121", "123111", "121131", "311112", "311211", "321111", "112131", "113121", "211131", + "121221", "312111", "311121", "122211"}; + +/* Global Variables for Channel Code */ +int S[11], B[11]; +long value; +long target_value; +char pattern[30]; + +int c39(struct zint_symbol *symbol, unsigned char source[], int length) +{ /* Code 39 */ + unsigned int i; + unsigned int counter; + char check_digit; + int error_number; + char dest[775]; + char localstr[2] = { 0 }; + + error_number = 0; + counter = 0; + + if((symbol->option_2 < 0) || (symbol->option_2 > 1)) { + symbol->option_2 = 0; + } + + if((symbol->symbology == BARCODE_LOGMARS) && (length > 59)) { + strcpy(symbol->errtxt, "Input too long"); + return ERROR_TOO_LONG; + } else if(length > 74) { + strcpy(symbol->errtxt, "Input too long"); + return ERROR_TOO_LONG; + } + to_upper(source); + error_number = is_sane(SILVER , source, length); + if(error_number == ERROR_INVALID_DATA) { + strcpy(symbol->errtxt, "Invalid characters in data"); + return error_number; + } + + /* Start character */ + strcpy(dest, "1211212111"); + + for(i = 0; i < length; i++) { + lookup(SILVER, C39Table, source[i], dest); + counter += posn(SILVER, source[i]); + } + + if((symbol->symbology == BARCODE_LOGMARS) || (symbol->option_2 == 1)) { + + counter = counter % 43; + if(counter < 10) { + check_digit = itoc(counter); + } else { + if(counter < 36) { + check_digit = (counter - 10) + 'A'; + } else { + switch(counter) { + case 36: check_digit = '-'; break; + case 37: check_digit = '.'; break; + case 38: check_digit = ' '; break; + case 39: check_digit = '$'; break; + case 40: check_digit = '/'; break; + case 41: check_digit = '+'; break; + case 42: check_digit = 37; break; + default: check_digit = ' '; break; /* Keep compiler happy */ + } + } + } + lookup(SILVER, C39Table, check_digit, dest); + + /* Display a space check digit as _, otherwise it looks like an error */ + if(check_digit == ' ') { + check_digit = '_'; + } + + localstr[0] = check_digit; + localstr[1] = '\0'; + } + + /* Stop character */ + concat (dest, "121121211"); + + if((symbol->symbology == BARCODE_LOGMARS) || (symbol->symbology == BARCODE_HIBC_39)) { + /* LOGMARS uses wider 'wide' bars than normal Code 39 */ + counter = strlen(dest); + for(i = 0; i < counter; i++) { + if(dest[i] == '2') { + dest[i] = '3'; + } + } + } + + expand(symbol, dest); + + if(symbol->symbology == BARCODE_CODE39) { + ustrcpy(symbol->text, (unsigned char*)"*"); + uconcat(symbol->text, source); + uconcat(symbol->text, (unsigned char*)localstr); + uconcat(symbol->text, (unsigned char*)"*"); + } else { + ustrcpy(symbol->text, source); + uconcat(symbol->text, (unsigned char*)localstr); + } + return error_number; +} |