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Reduce memory leak and tidy code

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hooper114 2008-10-08 17:06:16 +00:00
parent 858f69ea55
commit 608009b2a5
3 changed files with 47 additions and 185 deletions
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161
backend/dmatrix.c
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@ -4,14 +4,6 @@
libzint - the open source barcode library
Copyright (C) 2008 Robin Stuart <zint@hotmail.co.uk>
This file is a hacked-up copy of:
* IEC16022 bar code generation by
* Adrian Kennard, Andrews & Arnold Ltd
* with help from Cliff Hones on the RS coding
*
* (c) 2004 Adrian Kennard, Andrews & Arnold Ltd
* (c) 2006 Stefan Schmidt <stefan@datenfreihafen.org>
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
@ -27,156 +19,25 @@
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* The original version of this code is available at:
http://www.datenfreihafen.org/projects/iec16022.html */
#define IEC16022_VERSION "0.2"
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include "dm200.h"
#include "common.h"
// simple checked response malloc
void *safemalloc(int n)
{
void *p = malloc(n);
if (!p) {
fprintf(stderr, "Malloc(%d) failed\n", n);
exit(1);
}
return p;
}
int dmatrix(struct zint_symbol *symbol, unsigned char source[])
{
int W = 0, H = 0;
int ecc = 0;
int barcodelen = 0;
char *encoding = 0;
int len = 0, maxlen = 0, ecclen = 0;
unsigned char *grid = 0;
char size[3], eccstr[3];
/* In later versions of this code this procedure will redirect control
dependent on the version of Data Matrix symbol required - for now it is
just a place holder */
int barcodelen;
int error_number;
strcpy(size, "");
strcpy(eccstr, "200");
/* if (strlen(barcode) == 0) { // read from file
FILE *f = fopen(infile, "rb");
barcode = safemalloc(4001);
if (!f) {
strcpy(symbol->errtxt, "error: could not open file");
return 8;
}
barcodelen = fread(barcode, 1, 4000, f);
if (barcodelen < 0) {
strcpy(symbol->errtxt, "error: could not read file");
return 8;
}
barcode[barcodelen] = 0; // null terminate anyway
fclose(f);
} else */
barcodelen = ustrlen(source);
if(barcodelen > 780) {
strcpy(symbol->errtxt, "Input too long [711]");
return ERROR_TOO_LONG;
}
// check parameters
if (strlen(size) != 0) {
char *x = strchr(size, 'x');
W = atoi(size);
if (x)
H = atoi(x + 1);
if (!H)
W = H;
barcodelen = ustrlen(source);
if(barcodelen > 780) {
strcpy(symbol->errtxt, "Input too long [711]");
return ERROR_TOO_LONG;
}
/* if (eccstr) */
ecc = atoi(eccstr);
/* Yes I _have_ commented out large blocks of code! - odd size Data Matrix support
may be included in a later release but the code for it isn't needed here */
/* if (W & 1) { // odd size
if (W != H || W < 9 || W > 49) {
strcpy(symbol->errtxt, "error: invalid Data Matrix size");
return ERROR_INVALID_OPTION;
}
if (!eccstr) {
if (W >= 17)
ecc = 140;
else if (W >= 13)
ecc = 100;
else if (W >= 11)
ecc = 80;
else
ecc = 0;
}
if (ecc && ecc != 50 && ecc != 80 && ecc != 100 && ecc != 140 ||
ecc == 50 && W < 11 || ecc == 80 && W < 13 || ecc == 100
&& W < 13 || ecc == 140 && W < 17) {
strcpy(symbol->errtxt, "error: invalid ecc value");
return ERROR_INVALID_OPTION;
}
} else if (W) { // even size
if (W < H) {
int t = W;
W = H;
H = t;
}
if (!eccstr)
ecc = 200;
if (ecc != 200) {
strcpy(symbol->errtxt, "error: invalid size for ecc 200");
return ERROR_INVALID_OPTION;
}
}
error_number = iec16022ecc200(source, barcodelen, symbol);
else { // auto size
if (!eccstr)
// default is even sizes only unless explicit ecc set to force odd
// sizes
ecc = 200;
} */
// processing stamps
/*if ((W & 1) || ecc < 200) { // odd sizes
strcpy(symbol->errtxt, "error: odd sizes not supported");
return ERROR_INVALID_OPTION;
} else { */ // even sizes
grid = iec16022ecc200(&W, &H, &encoding, barcodelen, source, &len, &maxlen, &ecclen);
/*} */
// output
if (!grid || !W) {
strcpy(symbol->errtxt, "Data Matrix encoding error [722]");
return ERROR_ENCODING_PROBLEM;
}
int y;
/*for (y = H - 1; y >= 0; y--) {
int x;
for (x = 0; x < W; x++)
printf("%c",
grid[W * y + x] ? '*' : ' ');
printf("\n");
}*/
symbol->rows = H;
symbol->width = W;
for(y = H - 1; y >= 0; y--) {
int x;
for(x = 0; x < W; x++) {
if(grid[W * y + x]) {
symbol->encoded_data[(H - y) - 1][x] = '1'; }
else {
symbol->encoded_data[(H - y) - 1][x] = '0'; }
}
symbol->row_height[(H - y) - 1] = 1;
}
return 0;
return error_number;
}