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383 lines
15 KiB
C
383 lines
15 KiB
C
/* medical.c - Handles 1 track and 2 track pharmacode and Codabar */
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/*
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libzint - the open source barcode library
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Copyright (C) 2008-2024 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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/* SPDX-License-Identifier: BSD-3-Clause */
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#include <stdio.h>
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#include "common.h"
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INTERNAL int code39(struct zint_symbol *symbol, unsigned char source[], int length);
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static const char CALCIUM[] = "0123456789-$:/.+ABCD";
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#define CALCIUM_INNER_F (IS_NUM_F | IS_MNS_F | IS_CLI_F | IS_PLS_F) /* CALCIUM_INNER "0123456789-$:/.+" */
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/* Codabar table checked against EN 798:1995 */
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static const char CodaTable[20][8] = {
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{'1','1','1','1','1','2','2','1'}, {'1','1','1','1','2','2','1','1'}, {'1','1','1','2','1','1','2','1'},
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{'2','2','1','1','1','1','1','1'}, {'1','1','2','1','1','2','1','1'}, {'2','1','1','1','1','2','1','1'},
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{'1','2','1','1','1','1','2','1'}, {'1','2','1','1','2','1','1','1'}, {'1','2','2','1','1','1','1','1'},
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{'2','1','1','2','1','1','1','1'}, {'1','1','1','2','2','1','1','1'}, {'1','1','2','2','1','1','1','1'},
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{'2','1','1','1','2','1','2','1'}, {'2','1','2','1','1','1','2','1'}, {'2','1','2','1','2','1','1','1'},
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{'1','1','2','1','2','1','2','1'}, {'1','1','2','2','1','2','1','1'}, {'1','2','1','2','1','1','2','1'},
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{'1','1','1','2','1','2','2','1'}, {'1','1','1','2','2','2','1','1'}
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};
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INTERNAL int pharma(struct zint_symbol *symbol, unsigned char source[], int length) {
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/* "Pharmacode can represent only a single integer from 3 to 131070. Unlike other
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commonly used one-dimensional barcode schemes, pharmacode does not store the data in a
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form corresponding to the human-readable digits; the number is encoded in binary, rather
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than decimal. Pharmacode is read from right to left: with n as the bar position starting
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at 0 on the right, each narrow bar adds 2^n to the value and each wide bar adds 2(2^n).
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The minimum barcode is 2 bars and the maximum 16, so the smallest number that could
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be encoded is 3 (2 narrow bars) and the biggest is 131070 (16 wide bars)."
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- http://en.wikipedia.org/wiki/Pharmacode */
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/* This code uses the One Track Pharamacode calculating algorithm as recommended by
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the specification at http://www.laetus.com/laetus.php?request=file&id=69
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(http://www.gomaro.ch/ftproot/Laetus_PHARMA-CODE.pdf) */
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int tester;
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int counter, error_number = 0, h;
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char inter[18] = {0}; /* 131070 -> 17 bits */
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char *in = inter;
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char dest[64]; /* 17 * 2 + 1 */
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char *d = dest;
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if (length > 6) {
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strcpy(symbol->errtxt, "350: Input too long (6 character maximum)");
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return ZINT_ERROR_TOO_LONG;
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}
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tester = to_int(source, length);
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if (tester == -1) {
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strcpy(symbol->errtxt, "351: Invalid character in data (digits only)");
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return ZINT_ERROR_INVALID_DATA;
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}
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if ((tester < 3) || (tester > 131070)) {
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strcpy(symbol->errtxt, "352: Data out of range (3 to 131070)");
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return ZINT_ERROR_INVALID_DATA;
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}
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do {
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if (!(tester & 1)) {
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*in++ = 'W';
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tester = (tester - 2) / 2;
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} else {
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*in++ = 'N';
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tester = (tester - 1) / 2;
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}
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} while (tester != 0);
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h = in - inter;
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for (counter = h - 1; counter >= 0; counter--) {
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*d++ = inter[counter] == 'W' ? '3' : '1';
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*d++ = '2';
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}
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*--d = '\0'; /* Chop off final bar */
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expand(symbol, dest, d - dest);
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if (symbol->output_options & COMPLIANT_HEIGHT) {
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/* Laetus Pharmacode Guide 1.2 Standard one-track height 8mm / 0.5mm (X) */
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error_number = set_height(symbol, 16.0f, 0.0f, 0.0f, 0 /*no_errtxt*/);
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} else {
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(void) set_height(symbol, 0.0f, 50.0f, 0.0f, 1 /*no_errtxt*/);
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}
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return error_number;
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}
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static int pharma_two_calc(int tester, char *d) {
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/* This code uses the Two Track Pharamacode defined in the document at
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http://www.laetus.com/laetus.php?request=file&id=69 and using a modified
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algorithm from the One Track system. This standard accepts integet values
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from 4 to 64570080. */
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int counter, h;
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char inter[17];
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char *in = inter;
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do {
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switch (tester % 3) {
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case 0:
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*in++ = '3';
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tester = (tester - 3) / 3;
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break;
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case 1:
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*in++ = '1';
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tester = (tester - 1) / 3;
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break;
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case 2:
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*in++ = '2';
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tester = (tester - 2) / 3;
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break;
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}
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} while (tester != 0);
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h = in - inter;
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for (counter = h - 1; counter >= 0; counter--) {
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*d++ = inter[counter];
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}
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*d = '\0';
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return h;
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}
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INTERNAL int pharma_two(struct zint_symbol *symbol, unsigned char source[], int length) {
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/* Draws the patterns for two track pharmacode */
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int tester;
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char height_pattern[200];
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unsigned int loopey, h;
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int writer;
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int error_number = 0;
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if (length > 8) {
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strcpy(symbol->errtxt, "354: Input too long (8 character maximum");
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return ZINT_ERROR_TOO_LONG;
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}
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tester = to_int(source, length);
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if (tester == -1) {
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strcpy(symbol->errtxt, "355: Invalid character in data (digits only)");
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return ZINT_ERROR_INVALID_DATA;
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}
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if ((tester < 4) || (tester > 64570080)) {
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strcpy(symbol->errtxt, "353: Data out of range (4 to 64570080)");
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return ZINT_ERROR_INVALID_DATA;
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}
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h = pharma_two_calc(tester, height_pattern);
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writer = 0;
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for (loopey = 0; loopey < h; loopey++) {
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if ((height_pattern[loopey] == '2') || (height_pattern[loopey] == '3')) {
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set_module(symbol, 0, writer);
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}
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if ((height_pattern[loopey] == '1') || (height_pattern[loopey] == '3')) {
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set_module(symbol, 1, writer);
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}
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writer += 2;
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}
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symbol->rows = 2;
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symbol->width = writer - 1;
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if (symbol->output_options & COMPLIANT_HEIGHT) {
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/* Laetus Pharmacode Guide 1.4
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Two-track height min 8mm / 2mm (X max) = 4X (2X per row), standard 8mm / 1mm = 8X,
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max 12mm / 0.8mm (X min) = 15X */
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error_number = set_height(symbol, 2.0f, 8.0f, 15.0f, 0 /*no_errtxt*/);
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} else {
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(void) set_height(symbol, 0.0f, 10.0f, 0.0f, 1 /*no_errtxt*/);
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}
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return error_number;
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}
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/* The Codabar system consisting of simple substitution */
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INTERNAL int codabar(struct zint_symbol *symbol, unsigned char source[], int length) {
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int i, error_number = 0;
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int posns[103];
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char dest[833]; /* (103 + 1) * 8 + 1 == 833 */
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char *d = dest;
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int add_checksum, count = 0, checksum = 0;
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int d_chars = 0;
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if (length > 103) { /* No stack smashing please (103 + 1) * 11 = 1144 */
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strcpy(symbol->errtxt, "356: Input too long (103 character maximum)");
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return ZINT_ERROR_TOO_LONG;
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}
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/* BS EN 798:1995 4.2 "'Codabar' symbols shall consist of ... b) start character;
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c) one or more symbol characters representing data ... d) stop character ..." */
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if (length < 3) {
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strcpy(symbol->errtxt, "362: Input too short (3 character minimum)");
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return ZINT_ERROR_TOO_LONG;
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}
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to_upper(source, length);
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/* Codabar must begin and end with the characters A, B, C or D */
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if ((source[0] != 'A') && (source[0] != 'B') && (source[0] != 'C')
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&& (source[0] != 'D')) {
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strcpy(symbol->errtxt, "358: Does not begin with \"A\", \"B\", \"C\" or \"D\"");
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return ZINT_ERROR_INVALID_DATA;
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}
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if ((source[length - 1] != 'A') && (source[length - 1] != 'B') &&
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(source[length - 1] != 'C') && (source[length - 1] != 'D')) {
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strcpy(symbol->errtxt, "359: Does not end with \"A\", \"B\", \"C\" or \"D\"");
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return ZINT_ERROR_INVALID_DATA;
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}
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if (!is_sane_lookup(CALCIUM, sizeof(CALCIUM) - 1, source, length, posns)) {
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sprintf(symbol->errtxt, "357: Invalid character in data (\"%s\" only)", CALCIUM);
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return ZINT_ERROR_INVALID_DATA;
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}
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/* And must not use A, B, C or D otherwise (BS EN 798:1995 4.3.2) */
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if (!is_sane(CALCIUM_INNER_F, source + 1, length - 2)) {
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strcpy(symbol->errtxt, "363: Cannot contain \"A\", \"B\", \"C\" or \"D\"");
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return ZINT_ERROR_INVALID_DATA;
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}
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/* Add check character: 1 don't show to HRT, 2 do show to HRT
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(unfortunately to maintain back-compatibility, this is reverse of C25) */
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add_checksum = symbol->option_2 == 1 || symbol->option_2 == 2;
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for (i = 0; i < length; i++, d += 8) {
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if (add_checksum) {
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/* BS EN 798:1995 A.3 suggests using ISO 7064 algorithm but leaves it application defined.
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Following BWIPP and TEC-IT, use this simple mod-16 algorithm (not in ISO 7064) */
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count += posns[i];
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if (i + 1 == length) {
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checksum = count % 16;
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if (checksum) {
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checksum = 16 - checksum;
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}
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if (symbol->debug & ZINT_DEBUG_PRINT) {
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printf("Codabar: %s, count %d, checksum %d (%c)\n", source, count, checksum, CALCIUM[checksum]);
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}
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memcpy(d, CodaTable[checksum], 8);
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d += 8;
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}
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}
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memcpy(d, CodaTable[posns[i]], 8);
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if (source[i] == '/' || source[i] == ':' || source[i] == '.' || source[i] == '+') { /* Wide data characters */
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d_chars++;
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}
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}
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expand(symbol, dest, d - dest);
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if (symbol->output_options & COMPLIANT_HEIGHT) {
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/* BS EN 798:1995 4.4.1 (d) max of 5mm / 0.43mm (X max) ~ 11.628 or 15% of width where (taking N =
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narrow/wide ratio as 2 and I = X) width = ((2 * N + 5) * C + (N – 1) * (D + 2)) * X + I * (C – 1) + 2Q
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= ((4 + 5) * C + (D + 2) + C - 1 + 2 * 10) * X = (10 * C + D + 21) * X
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Length (C) includes start/stop chars */
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const float min_height_min = 11.6279068f; /* 5.0 / 0.43 */
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float min_height = stripf((10.0f * ((add_checksum ? length + 1 : length) + 2.0f) + d_chars + 21.0f) * 0.15f);
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if (min_height < min_height_min) {
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min_height = min_height_min;
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}
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/* Using 50 as default as none recommended */
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error_number = set_height(symbol, min_height, min_height > 50.0f ? min_height : 50.0f, 0.0f, 0 /*no_errtxt*/);
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} else {
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(void) set_height(symbol, 0.0f, 50.0f, 0.0f, 1 /*no_errtxt*/);
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}
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ustrcpy(symbol->text, source);
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if (symbol->option_2 == 2) {
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symbol->text[length - 1] = CALCIUM[checksum]; /* Place before final A/B/C/D character (BS EN 798:1995 A.3) */
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symbol->text[length] = source[length - 1];
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symbol->text[length + 1] = '\0';
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}
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return error_number;
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}
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/* Italian Pharmacode */
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INTERNAL int code32(struct zint_symbol *symbol, unsigned char source[], int length) {
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static const char TABELLA[] = "0123456789BCDFGHJKLMNPQRSTUVWXYZ";
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int i, zeroes, error_number = 0, checksum, checkpart, checkdigit;
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char localstr[10], risultante[7];
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long int pharmacode, devisor;
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int codeword[6];
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/* Validate the input */
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if (length > 8) {
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strcpy(symbol->errtxt, "360: Input too long (8 character maximum)");
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return ZINT_ERROR_TOO_LONG;
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}
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if (!is_sane(NEON_F, source, length)) {
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strcpy(symbol->errtxt, "361: Invalid character in data (digits only)");
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return ZINT_ERROR_INVALID_DATA;
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}
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/* Add leading zeros as required */
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zeroes = 8 - length;
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memset(localstr, '0', zeroes);
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ustrcpy(localstr + zeroes, source);
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/* Calculate the check digit */
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checksum = 0;
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for (i = 0; i < 4; i++) {
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checkpart = ctoi(localstr[i * 2]);
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checksum += checkpart;
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checkpart = 2 * (ctoi(localstr[(i * 2) + 1]));
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if (checkpart >= 10) {
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checksum += (checkpart - 10) + 1;
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} else {
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checksum += checkpart;
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}
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}
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/* Add check digit to data string */
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checkdigit = checksum % 10;
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localstr[8] = itoc(checkdigit);
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localstr[9] = '\0';
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/* Convert string into an integer value */
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pharmacode = atoi(localstr);
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/* Convert from decimal to base-32 */
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devisor = 33554432;
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for (i = 5; i >= 0; i--) {
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long int remainder;
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codeword[i] = pharmacode / devisor;
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remainder = pharmacode % devisor;
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pharmacode = remainder;
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devisor /= 32;
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}
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/* Look up values in 'Tabella di conversione' */
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for (i = 5; i >= 0; i--) {
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risultante[5 - i] = TABELLA[codeword[i]];
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}
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risultante[6] = '\0';
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/* Plot the barcode using Code 39 */
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error_number = code39(symbol, (unsigned char *) risultante, 6);
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if (error_number != 0) { /* Should never happen */
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return error_number; /* Not reached */
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}
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if (symbol->output_options & COMPLIANT_HEIGHT) {
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/* Allegato A Caratteristiche tecniche del bollino farmaceutico
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(https://www.gazzettaufficiale.it/do/atto/serie_generale/caricaPdf?cdimg=14A0566800100010110001
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&dgu=2014-07-18&art.dataPubblicazioneGazzetta=2014-07-18&art.codiceRedazionale=14A05668&art.num=1
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&art.tiposerie=SG)
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X given as 0.250mm; height (and quiet zones) left to ISO/IEC 16388:2007 (Code 39)
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So min height 5mm = 5mm / 0.25mm = 20 > 15% of width, i.e. (10 * 8 + 19) * 0.15 = 14.85 */
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error_number = set_height(symbol, 20.0f, 20.0f, 0.0f, 0 /*no_errtxt*/); /* Use as default also */
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} else {
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(void) set_height(symbol, 0.0f, 50.0f, 0.0f, 1 /*no_errtxt*/);
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}
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/* Override the normal text output with the Pharmacode number */
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ustrcpy(symbol->text, "A");
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ustrcat(symbol->text, localstr);
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return error_number;
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}
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/* vim: set ts=4 sw=4 et : */
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