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Improved Kanji support - Now converts from Unicode to Shift JIS

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This commit is contained in:
hooper114 2009-02-22 14:13:32 +00:00
parent 2262c365c4
commit de4f39782f
7 changed files with 6977 additions and 5 deletions
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89
backend/library.c
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@ -23,6 +23,7 @@
#include <string.h>
#include "common.h"
#include "gs1.h"
#include "sjis.h"
#define HIBCSET "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%"
@ -269,6 +270,81 @@ int eci_process(struct zint_symbol *symbol, unsigned char source[], unsigned cha
return 0;
}
int unicode2shift_jis(struct zint_symbol *symbol, unsigned char source[], unsigned char preprocessed[])
{ /* 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, len, error_number, i;
int next;
unsigned long int uval, jval;
len = ustrlen(source);
bpos = 0;
jpos = 0;
error_number = 0;
next = 0;
do {
uval = 0;
jval = 0;
if(source[bpos] <= 0x7f) {
/* 1 byte mode */
uval = source[bpos];
next = bpos + 1;
}
if((source[bpos] >= 0x80) && (source[bpos] <= 0xbf)) {
strcpy(symbol->errtxt, "Corrupt Unicode data");
return ERROR_INVALID_DATA;
}
if((source[bpos] >= 0xc0) && (source[bpos] <= 0xc1)) {
strcpy(symbol->errtxt, "Overlong encoding not supported");
return ERROR_INVALID_DATA;
}
if((source[bpos] >= 0xc2) && (source[bpos] <= 0xdf)) {
/* 2 byte mode */
uval = ((source[bpos] & 0x1f) << 6) + (source[bpos + 1] & 0x3f);
next = bpos + 2;
}
if((source[bpos] >= 0xe0) && (source[bpos] <= 0xef)) {
/* 3 byte mode */
uval = ((source[bpos] & 0x0f) << 12) + ((source[bpos + 1] & 0x3f) << 6) + (source[bpos + 2] & 0x3f);
next = bpos + 3;
}
if(source[bpos] >= 0xf0) {
strcpy(symbol->errtxt, "Unicode sequences of more than 3 bytes not supported");
return ERROR_INVALID_DATA;
}
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;
bpos = next;
} while(bpos < len);
return error_number;
}
int gs1_compliant(int symbology)
{
/* Returns 1 if symbology supports GS1 data */
@ -380,11 +456,20 @@ int ZBarcode_Encode(struct zint_symbol *symbol, unsigned char *source)
}
break;
case KANJI_MODE:
if(symbol->symbology != BARCODE_QRCODE) {
if((symbol->symbology != BARCODE_QRCODE) && (symbol->symbology != BARCODE_MICROQR)) {
strcpy(symbol->errtxt, "Selected symbology does not support Kanji mode");
return ERROR_INVALID_OPTION;
}
ustrcpy(preprocessed, source); break;
error_number = unicode2shift_jis(symbol, source, preprocessed);
if(error_number != 0) { return error_number; }
break;
case SJIS_MODE:
if((symbol->symbology != BARCODE_QRCODE) && (symbol->symbology != BARCODE_MICROQR)) {
strcpy(symbol->errtxt, "Selected symbology does not support Kanji mode");
return ERROR_INVALID_OPTION;
}
ustrcpy(preprocessed, source);
break;
}
if(symbol->symbology == BARCODE_CODE16K) {