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493 lines
13 KiB
C
493 lines
13 KiB
C
/* plessey.c - Handles Plessey and MSI Plessey */
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/*
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libzint - the open source barcode library
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Copyright (C) 2008-2017 Robin Stuart <rstuart114@gmail.com>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the project nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "common.h"
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#define SSET "0123456789ABCDEF"
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static const char *PlessTable[16] = {
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"13131313", "31131313", "13311313", "31311313", "13133113", "31133113",
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"13313113", "31313113", "13131331", "31131331", "13311331", "31311331", "13133131",
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"31133131", "13313131", "31313131"
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};
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static const char *MSITable[10] = {
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"12121212", "12121221", "12122112", "12122121", "12211212", "12211221",
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"12212112", "12212121", "21121212", "21121221"
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};
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/* Not MSI/Plessey but the older Plessey standard */
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int plessey(struct zint_symbol *symbol, unsigned char source[], const size_t length) {
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unsigned int i, check;
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unsigned char *checkptr;
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static const char grid[9] = {1, 1, 1, 1, 0, 1, 0, 0, 1};
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char dest[1024]; /* 8 + 65 * 8 + 8 * 2 + 9 + 1 ~ 1024 */
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int error_number;
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if (length > 65) {
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strcpy(symbol->errtxt, "370: Input too long");
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return ZINT_ERROR_TOO_LONG;
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}
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error_number = is_sane(SSET, source, length);
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if (error_number == ZINT_ERROR_INVALID_DATA) {
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strcpy(symbol->errtxt, "371: Invalid characters in data");
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return error_number;
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}
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checkptr = (unsigned char *) calloc(1, length * 4 + 8);
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/* Start character */
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strcpy(dest, "31311331");
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/* Data area */
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for (i = 0; i < length; i++) {
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check = posn(SSET, source[i]);
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lookup(SSET, PlessTable, source[i], dest);
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checkptr[4 * i] = check & 1;
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checkptr[4 * i + 1] = (check >> 1) & 1;
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checkptr[4 * i + 2] = (check >> 2) & 1;
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checkptr[4 * i + 3] = (check >> 3) & 1;
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}
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/* CRC check digit code adapted from code by Leonid A. Broukhis
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used in GNU Barcode */
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for (i = 0; i < (4 * length); i++) {
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int j;
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if (checkptr[i])
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for (j = 0; j < 9; j++)
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checkptr[i + j] ^= grid[j];
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}
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for (i = 0; i < 8; i++) {
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switch (checkptr[length * 4 + i]) {
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case 0: strcat(dest, "13");
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break;
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case 1: strcat(dest, "31");
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break;
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}
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}
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/* Stop character */
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strcat(dest, "331311313");
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expand(symbol, dest);
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ustrcpy(symbol->text, source);
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free(checkptr);
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return error_number;
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}
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/* Plain MSI Plessey - does not calculate any check character */
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int msi_plessey(struct zint_symbol *symbol, unsigned char source[], const size_t length) {
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size_t i;
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char dest[512]; /* 2 + 55 * 8 + 3 + 1 ~ 512 */
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if (length > 55) {
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strcpy(symbol->errtxt, "372: Input too long");
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return ZINT_ERROR_TOO_LONG;
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}
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/* start character */
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strcpy(dest, "21");
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for (i = 0; i < length; i++) {
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lookup(NEON, MSITable, source[i], dest);
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}
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/* Stop character */
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strcat(dest, "121");
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expand(symbol, dest);
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ustrcpy(symbol->text, source);
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return 0;
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}
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/* MSI Plessey with Modulo 10 check digit - algorithm from Barcode Island
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* http://www.barcodeisland.com/ */
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int msi_plessey_mod10(struct zint_symbol *symbol, unsigned char source[], int length) {
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unsigned long i, wright, dau, pedwar, pump, n;
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char un[200], tri[32];
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int error_number, h;
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char dest[1000];
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error_number = 0;
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if (length > 18) {
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strcpy(symbol->errtxt, "373: Input too long");
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return ZINT_ERROR_TOO_LONG;
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}
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/* start character */
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strcpy(dest, "21");
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/* draw data section */
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for (i = 0; i < length; i++) {
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lookup(NEON, MSITable, source[i], dest);
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}
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/* calculate check digit */
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wright = 0;
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n = !(length & 1);
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for (i = n; i < length; i += 2) {
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un[wright++] = source[i];
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}
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un[wright] = '\0';
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dau = strtoul(un, NULL, 10);
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dau *= 2;
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sprintf(tri, "%ld", dau);
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pedwar = 0;
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h = strlen(tri);
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for (i = 0; i < h; i++) {
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pedwar += ctoi(tri[i]);
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}
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n = length & 1;
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for (i = n; i < length; i += 2) {
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pedwar += ctoi(source[i]);
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}
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pump = (10 - pedwar % 10);
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if (pump == 10) {
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pump = 0;
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}
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/* draw check digit */
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lookup(NEON, MSITable, itoc(pump), dest);
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/* Stop character */
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strcat(dest, "121");
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expand(symbol, dest);
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ustrcpy(symbol->text, source);
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symbol->text[length] = itoc(pump);
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symbol->text[length + 1] = '\0';
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return error_number;
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}
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/* MSI Plessey with two Modulo 10 check digits - algorithm from
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* Barcode Island http://www.barcodeisland.com/ */
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int msi_plessey_mod1010(struct zint_symbol *symbol, unsigned char source[], const unsigned int src_len) {
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unsigned long i, n, wright, dau, pedwar, pump, chwech;
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char un[16], tri[32];
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int error_number, h;
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char dest[1000];
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error_number = 0;
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if (src_len > 18) {
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/* No Entry Stack Smashers! limit because of str->number conversion*/
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strcpy(symbol->errtxt, "374: Input too long");
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return ZINT_ERROR_TOO_LONG;
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}
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/* start character */
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strcpy(dest, "21");
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/* draw data section */
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for (i = 0; i < src_len; i++) {
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lookup(NEON, MSITable, source[i], dest);
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}
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/* calculate first check digit */
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wright = 0;
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n = !(src_len & 1);
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for (i = n; i < src_len; i += 2) {
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un[wright++] = source[i];
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}
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un[wright] = '\0';
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dau = strtoul(un, NULL, 10);
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dau *= 2;
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sprintf(tri, "%ld", dau);
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pedwar = 0;
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h = strlen(tri);
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for (i = 0; i < h; i++) {
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pedwar += ctoi(tri[i]);
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}
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n = src_len & 1;
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for (i = n; i < src_len; i += 2) {
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pedwar += ctoi(source[i]);
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}
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pump = 10 - pedwar % 10;
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if (pump == 10) {
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pump = 0;
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}
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/* calculate second check digit */
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wright = 0;
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n = src_len & 1;
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for (i = n; i < src_len; i += 2) {
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un[wright++] = source[i];
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}
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un[wright++] = itoc(pump);
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un[wright] = '\0';
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dau = strtoul(un, NULL, 10);
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dau *= 2;
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sprintf(tri, "%ld", dau);
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pedwar = 0;
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h = strlen(tri);
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for (i = 0; i < h; i++) {
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pedwar += ctoi(tri[i]);
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}
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i = !(src_len & 1);
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for (; i < src_len; i += 2) {
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pedwar += ctoi(source[i]);
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}
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chwech = 10 - pedwar % 10;
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if (chwech == 10) {
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chwech = 0;
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}
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/* Draw check digits */
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lookup(NEON, MSITable, itoc(pump), dest);
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lookup(NEON, MSITable, itoc(chwech), dest);
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/* Stop character */
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strcat(dest, "121");
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expand(symbol, dest);
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ustrcpy(symbol->text, source);
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symbol->text[src_len] = itoc(pump);
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symbol->text[src_len + 1] = itoc(chwech);
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symbol->text[src_len + 2] = '\0';
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return error_number;
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}
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/* Calculate a Modulo 11 check digit using the system discussed on Wikipedia -
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see http://en.wikipedia.org/wiki/Talk:MSI_Barcode */
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int msi_plessey_mod11(struct zint_symbol *symbol, unsigned char source[], const unsigned int src_len) {
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/* uses the IBM weight system */
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int i, weight, x, check;
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int error_number;
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char dest[1000];
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error_number = 0;
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if (src_len > 55) {
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strcpy(symbol->errtxt, "375: Input too long");
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return ZINT_ERROR_TOO_LONG;
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}
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/* start character */
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strcpy(dest, "21");
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/* draw data section */
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for (i = 0; i < src_len; i++) {
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lookup(NEON, MSITable, source[i], dest);
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}
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/* calculate check digit */
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x = 0;
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weight = 2;
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for (i = src_len - 1; i >= 0; i--) {
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x += weight * ctoi(source[i]);
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weight++;
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if (weight > 7) {
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weight = 2;
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}
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}
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check = (11 - (x % 11)) % 11;
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if (check == 10) {
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lookup(NEON, MSITable, '1', dest);
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lookup(NEON, MSITable, '0', dest);
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} else {
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lookup(NEON, MSITable, itoc(check), dest);
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}
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/* stop character */
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strcat(dest, "121");
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expand(symbol, dest);
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ustrcpy(symbol->text, source);
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if (check == 10) {
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strcat((char*) symbol->text, "10");
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} else {
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symbol->text[src_len] = itoc(check);
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symbol->text[src_len + 1] = '\0';
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}
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return error_number;
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}
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/* Combining the Barcode Island and Wikipedia code
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* Verified against http://www.bokai.com/BarcodeJSP/applet/BarcodeSampleApplet.htm */
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int msi_plessey_mod1110(struct zint_symbol *symbol, unsigned char source[], const unsigned int src_len) {
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/* Weighted using the IBM system */
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unsigned long i, weight, x, check, wright, dau, pedwar, pump;
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size_t h;
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long si;
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char un[16], tri[16];
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int error_number;
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char dest[1000];
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unsigned char temp[32];
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unsigned int temp_len;
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error_number = 0;
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if (src_len > 18) {
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strcpy(symbol->errtxt, "376: Input too long");
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return ZINT_ERROR_TOO_LONG;
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}
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/* start character */
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strcpy(dest, "21");
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/* draw data section */
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for (i = 0; i < src_len; i++) {
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lookup(NEON, MSITable, source[i], dest);
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}
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/* calculate first (mod 11) digit */
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x = 0;
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weight = 2;
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for (si = src_len - 1; si >= 0; si--) {
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x += weight * ctoi(source[si]);
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weight++;
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if (weight > 7) {
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weight = 2;
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}
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}
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check = (11 - (x % 11)) % 11;
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ustrcpy(temp, source);
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temp_len = src_len;
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if (check == 10) {
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lookup(NEON, MSITable, '1', dest);
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lookup(NEON, MSITable, '0', dest);
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strcat((char*) temp, "10");
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temp_len += 2;
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} else {
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lookup(NEON, MSITable, itoc(check), dest);
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temp[temp_len++] = itoc(check);
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temp[temp_len] = '\0';
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}
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/* calculate second (mod 10) check digit */
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wright = 0;
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i = !(temp_len & 1);
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for (; i < temp_len; i += 2) {
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un[wright++] = temp[i];
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}
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un[wright] = '\0';
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dau = strtoul(un, NULL, 10);
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dau *= 2;
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sprintf(tri, "%ld", dau);
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pedwar = 0;
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h = strlen(tri);
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for (i = 0; i < h; i++) {
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pedwar += ctoi(tri[i]);
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}
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i = temp_len & 1;
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for (; i < temp_len; i += 2) {
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pedwar += ctoi(temp[i]);
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}
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pump = 10 - pedwar % 10;
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if (pump == 10) {
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pump = 0;
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}
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/* draw check digit */
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lookup(NEON, MSITable, itoc(pump), dest);
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/* stop character */
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strcat(dest, "121");
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expand(symbol, dest);
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temp[temp_len++] = itoc(pump);
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temp[temp_len] = '\0';
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ustrcpy(symbol->text, temp);
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return error_number;
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}
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int msi_handle(struct zint_symbol *symbol, unsigned char source[], int length) {
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int error_number;
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error_number = is_sane(NEON, source, length);
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if (error_number != 0) {
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strcpy(symbol->errtxt, "377: Invalid characters in input data");
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return ZINT_ERROR_INVALID_DATA;
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}
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if ((symbol->option_2 < 0) || (symbol->option_2 > 4)) {
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symbol->option_2 = 0;
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}
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switch (symbol->option_2) {
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case 0: error_number = msi_plessey(symbol, source, length);
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break;
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case 1: error_number = msi_plessey_mod10(symbol, source, length);
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break;
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case 2: error_number = msi_plessey_mod1010(symbol, source, length);
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break;
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case 3: error_number = msi_plessey_mod11(symbol, source, length);
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break;
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case 4: error_number = msi_plessey_mod1110(symbol, source, length);
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break;
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}
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return error_number;
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}
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