/* auspost.c - Handles Australia Post 4-State Barcode */ /* libzint - the open source barcode library Copyright (C) 2008 Robin Stuart 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 3 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #define GDSET "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz #" static char *AusNTable[10] = {"00", "01", "02", "10", "11", "12", "20", "21", "22", "30"}; static char *AusCTable[64] = {"222", "300", "301", "302", "310", "311", "312", "320", "321", "322", "000", "001", "002", "010", "011", "012", "020", "021", "022", "100", "101", "102", "110", "111", "112", "120", "121", "122", "200", "201", "202", "210", "211", "212", "220", "221", "023", "030", "031", "032", "033", "103", "113", "123", "130", "131", "132", "133", "203", "213", "223", "230", "231", "232", "233", "303", "313", "323", "330", "331", "332", "333", "003", "013"}; static char *AusBarTable[64] = {"000", "001", "002", "003", "010", "011", "012", "013", "020", "021", "022", "023", "030", "031", "032", "033", "100", "101", "102", "103", "110", "111", "112", "113", "120", "121", "122", "123", "130", "131", "132", "133", "200", "201", "202", "203", "210", "211", "212", "213", "220", "221", "222", "223", "230", "231", "232", "233", "300", "301", "302", "303", "310", "311", "312", "313", "320", "321", "322", "323", "330", "331", "332", "333"}; #include #include #include #include "common.h" #include "reedsol.h" void rs_error(char data_pattern[]) { /* Adds Reed-Solomon error correction to auspost */ int reader, triple_writer; char triple[31], inv_triple[31]; unsigned char result[5]; triple_writer = 0; for(reader = 2; reader < strlen(data_pattern); reader+= 3) { triple[triple_writer] = 0; switch(data_pattern[reader]) { case '1': triple[triple_writer] += 16; break; case '2': triple[triple_writer] += 32; break; case '3': triple[triple_writer] += 48; break; } switch(data_pattern[reader + 1]) { case '1': triple[triple_writer] += 4; break; case '2': triple[triple_writer] += 8; break; case '3': triple[triple_writer] += 12; break; } switch(data_pattern[reader + 2]) { case '1': triple[triple_writer] += 1; break; case '2': triple[triple_writer] += 2; break; case '3': triple[triple_writer] += 3; break; } triple_writer++; } for(reader = 0; reader < triple_writer; reader++) { inv_triple[reader] = triple[(triple_writer - 1) - reader]; } rs_init_gf(0x43); rs_init_code(4, 1); rs_encode(triple_writer, (unsigned char*) inv_triple, result); for(reader = 4; reader > 0; reader--) { concat(data_pattern, AusBarTable[result[reader - 1]]); } } int australia_post(struct zint_symbol *symbol, unsigned char source[]) { /* Handles Australia Posts's 4 State Codes */ /* Customer Standard Barcode, Barcode 2 or Barcode 3 system determined automatically (i.e. the FCC doesn't need to be specified by the user) dependent on the length of the input string */ /* The contents of data_pattern conform to the following standard: 0 = Tracker, Ascender and Descender 1 = Tracker and Ascender 2 = Tracker and Descender 3 = Tracker only */ char data_pattern[200]; char fcc[3], dpid[10]; unsigned int loopey, reader; int writer; strcpy (data_pattern, ""); int errno; errno = 0; /* Do all of the length checking first to avoid stack smashing */ if(symbol->symbology == BARCODE_AUSPOST) { /* Format control code (FCC) */ switch(ustrlen(source)) { case 8: strcpy(fcc, "11"); break; case 13: strcpy(fcc, "59"); break; case 16: strcpy(fcc, "59"); errno = is_sane(NESET, source); break; case 18: strcpy(fcc, "62"); break; case 23: strcpy(fcc, "62"); errno = is_sane(NESET, source); break; default: strcpy(symbol->errtxt, "error: auspost input is wrong length"); return ERROR_TOO_LONG; break; } if(errno == ERROR_INVALID_DATA) { strcpy(symbol->errtxt, "error: invalid characters in data"); return errno; } } else { if(ustrlen(source) != 8) { strcpy(symbol->errtxt, "error: auspost input is wrong length"); return ERROR_TOO_LONG; } switch(symbol->symbology) { case BARCODE_AUSREPLY: strcpy(fcc, "45"); break; case BARCODE_AUSROUTE: strcpy(fcc, "87"); break; case BARCODE_AUSREDIRECT: strcpy(fcc, "92"); break; } } errno = is_sane(GDSET, source); if(errno == ERROR_INVALID_DATA) { strcpy(symbol->errtxt, "error: invalid characters in data"); return errno; } /* Verifiy that the first 8 characters are numbers */ for(loopey = 0; loopey < 8; loopey++) { dpid[loopey] = source[loopey]; } dpid[8] = '\0'; errno = is_sane(NESET, (unsigned char*)dpid); if(errno == ERROR_INVALID_DATA) { strcpy(symbol->errtxt, "error: invalid characters in DPID"); return errno; } /* Start character */ concat(data_pattern, "13"); /* Encode the FCC */ for(reader = 0; reader < 2; reader++) { lookup(NESET, AusNTable, fcc[reader], data_pattern); } /* printf("AUSPOST FCC: %s ", fcc); */ /* Delivery Point Identifier (DPID) */ for(reader = 0; reader < 8; reader++) { lookup(NESET, AusNTable, dpid[reader], data_pattern); } /* Customer Information */ if(ustrlen(source) > 8) { if((ustrlen(source) == 13) || (ustrlen(source) == 18)) { for(reader = 8; reader < ustrlen(source); reader++) { lookup(GDSET, AusCTable, source[reader], data_pattern); } } if((ustrlen(source) == 16) || (ustrlen(source) == 23)) { for(reader = 8; reader < ustrlen(source); reader++) { lookup(NESET, AusNTable, source[reader], data_pattern); } } } /* Filler bar */ if(strlen(data_pattern) == 22) { concat(data_pattern, "3"); } if(strlen(data_pattern) == 37) { concat(data_pattern, "3"); } if(strlen(data_pattern) == 52) { concat(data_pattern, "3"); } /* Reed Solomon error correction */ rs_error(data_pattern); /* Stop character */ concat(data_pattern, "13"); /* Turn the symbol into a bar pattern ready for plotting */ writer = 0; for(loopey = 0; loopey < strlen(data_pattern); loopey++) { if((data_pattern[loopey] == '1') || (data_pattern[loopey] == '0')) { symbol->encoded_data[0][writer] = '1'; } symbol->encoded_data[1][writer] = '1'; if((data_pattern[loopey] == '2') || (data_pattern[loopey] == '0')) { symbol->encoded_data[2][writer] = '1'; } writer += 2; } symbol->row_height[0] = 4; symbol->row_height[1] = 2; symbol->row_height[2] = 4; symbol->rows = 3; symbol->width = writer - 1; return errno; }