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