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API overhaul part 1: removal of nullchar

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hooper114 2009-09-29 09:45:46 +00:00
parent 4455c6a893
commit 04b9a99241
42 changed files with 1458 additions and 1194 deletions
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118
backend/shiftjis.c Normal file
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@ -0,0 +1,118 @@
/* shiftjis.c - Handle conversion to Shift-JIS */
/*
libzint - the open source barcode library
Copyright (C) 2009 Robin Stuart <robin@zint.org.uk>
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.
*/
#include <string.h>
#include "common.h"
#include "sjis.h"
int shiftJIS(struct zint_symbol *symbol, unsigned char source[], unsigned char preprocessed[], int *length, int *kanji)
{ /* QR Code supports compression of Shift-JIS data using "Kanji" mode - this function
attempts to convert Unicode characters to Shift-JIS to allow this */
int bpos, jpos, error_number, i, done;
int next;
unsigned long int uval, jval;
bpos = 0;
jpos = 0;
error_number = 0;
next = 0;
do {
uval = 0;
jval = 0;
done = 0;
if(source[bpos] <= 0x7f) {
/* 1 byte mode (7-bit ASCII) */
uval = source[bpos];
next = bpos + 1;
preprocessed[jpos] = uval;
jpos++;
done = 1;
}
if(done == 0) {
if((source[bpos] >= 0x80) && (source[bpos] <= 0xbf)) {
strcpy(symbol->errtxt, "Corrupt Unicode data");
return ERROR_INVALID_DATA;
}
}
if(done == 0) {
if((source[bpos] >= 0xc0) && (source[bpos] <= 0xc1)) {
strcpy(symbol->errtxt, "Overlong encoding not supported");
return ERROR_INVALID_DATA;
}
}
if(done == 0) {
if((source[bpos] >= 0xc2) && (source[bpos] <= 0xdf)) {
/* 2 byte mode (Latin 1) */
uval = ((source[bpos] & 0x1f) << 6) + (source[bpos + 1] & 0x3f);
next = bpos + 2;
preprocessed[jpos] = uval;
jpos++;
done = 1;
}
}
if(done == 0) {
if((source[bpos] >= 0xe0) && (source[bpos] <= 0xef)) {
/* 3 byte mode (Japanese) */
uval = ((source[bpos] & 0x0f) << 12) + ((source[bpos + 1] & 0x3f) << 6) + (source[bpos + 2] & 0x3f);
next = bpos + 3;
*kanji = 1;
for(i = 0; i < 6843; i++) {
if(sjis_lookup[i * 2] == uval) {
jval = sjis_lookup[(i * 2) + 1];
}
}
if(jval == 0) {
strcpy(symbol->errtxt, "Invalid Shift JIS character");
return ERROR_INVALID_DATA;
}
preprocessed[jpos] = (jval & 0xff00) >> 8;
preprocessed[jpos + 1] = (jval & 0xff);
/* printf("Unicode value U+%04X = Shift JIS value 0x%04X\n", uval, jval); */
jpos += 2;
done = 1;
}
}
if(done == 0) {
if(source[bpos] >= 0xf0) {
strcpy(symbol->errtxt, "Unicode sequences of more than 3 bytes not supported");
return ERROR_INVALID_DATA;
}
}
bpos = next;
} while(bpos < *length);
*length = jpos;
return error_number;
}