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Handle UNICODE_MODE ECI conversion for reduced charset barcodes and QRCODE/MICROQR

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gitlost 2019-11-27 16:16:14 +00:00
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commit fed7378675
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101
backend/common.c
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@ -260,56 +260,81 @@ int istwodigits(const unsigned char source[], const size_t position) {
return 0;
}
/* State machine to decode UTF-8 to Unicode codepoints (state 0 means done, state 12 means error) */
unsigned int decode_utf8(unsigned int* state, unsigned int* codep, const unsigned char byte) {
/*
Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
See https://bjoern.hoehrmann.de/utf-8/decoder/dfa/ for details.
*/
static const unsigned char utf8d[] = {
/* The first part of the table maps bytes to character classes that
* reduce the size of the transition table and create bitmasks. */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3, 11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8,
/* The second part is a transition table that maps a combination
* of a state of the automaton and a character class to a state. */
0,12,24,36,60,96,84,12,12,12,48,72, 12,12,12,12,12,12,12,12,12,12,12,12,
12, 0,12,12,12,12,12, 0,12, 0,12,12, 12,24,12,12,12,12,12,24,12,24,12,12,
12,12,12,12,12,12,12,24,12,12,12,12, 12,24,12,12,12,12,12,12,12,24,12,12,
12,12,12,12,12,12,12,36,12,36,12,12, 12,36,12,12,12,12,12,36,12,36,12,12,
12,36,12,12,12,12,12,12,12,12,12,12,
};
unsigned int type = utf8d[byte];
*codep = *state != 0 ? (byte & 0x3fu) | (*codep << 6) : (0xff >> type) & byte;
*state = utf8d[256 + *state + type];
return *state;
}
/* Convert UTF-8 to UTF-16 for codepoints <= U+FFFF (ie four-byte sequences (requiring UTF-16 surrogates) not allowed) */
int utf8toutf16(struct zint_symbol *symbol, const unsigned char source[], int vals[], size_t *length) {
size_t bpos;
int jpos, error_number;
int next;
int jpos;
unsigned int codepoint, state = 0;
bpos = 0;
jpos = 0;
error_number = 0;
next = 0;
do {
if (source[bpos] <= 0x7f) {
/* 1 byte mode (7-bit ASCII) */
vals[jpos] = source[bpos];
next = bpos + 1;
jpos++;
} else {
if ((source[bpos] >= 0x80) && (source[bpos] <= 0xbf)) {
strcpy(symbol->errtxt, "240: Corrupt Unicode data");
return ZINT_ERROR_INVALID_DATA;
}
if ((source[bpos] >= 0xc0) && (source[bpos] <= 0xc1)) {
strcpy(symbol->errtxt, "241: Overlong encoding not supported");
return ZINT_ERROR_INVALID_DATA;
}
while (bpos < *length) {
do {
decode_utf8(&state, &codepoint, source[bpos++]);
} while (bpos < *length && state != 0 && state != 12);
if ((source[bpos] >= 0xc2) && (source[bpos] <= 0xdf)) {
/* 2 byte mode */
vals[jpos] = ((source[bpos] & 0x1f) << 6) + (source[bpos + 1] & 0x3f);
next = bpos + 2;
jpos++;
} else
if ((source[bpos] >= 0xe0) && (source[bpos] <= 0xef)) {
/* 3 byte mode */
vals[jpos] = ((source[bpos] & 0x0f) << 12) + ((source[bpos + 1] & 0x3f) << 6) + (source[bpos + 2] & 0x3f);
next = bpos + 3;
jpos++;
} else
if (source[bpos] >= 0xf0) {
strcpy(symbol->errtxt, "242: Unicode sequences of more than 3 bytes not supported");
return ZINT_ERROR_INVALID_DATA;
}
if (state != 0) {
strcpy(symbol->errtxt, "240: Corrupt Unicode data");
return ZINT_ERROR_INVALID_DATA;
}
if (codepoint > 0xffff) {
strcpy(symbol->errtxt, "242: Unicode sequences of more than 3 bytes not supported");
return ZINT_ERROR_INVALID_DATA;
}
bpos = next;
vals[jpos] = codepoint;
jpos++;
} while (bpos < *length);
}
*length = jpos;
return error_number;
return 0;
}