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Extend Unicode support in Han Xin to Supplementary planes (>= U+10000)

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This commit is contained in:
Robin Stuart 2017-04-23 20:15:50 +01:00
parent fa40676691
commit 1ec0873caa
1 changed files with 49 additions and 25 deletions
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66
backend/hanxin.c
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@ -1301,12 +1301,13 @@ int hx_apply_bitmask(unsigned char *grid, int size) {
int han_xin(struct zint_symbol *symbol, const unsigned char source[], int length) {
int est_binlen;
int ecc_level = symbol->option_1;
int i, j, version, posn = 0, glyph, glyph2;
int i, j, version, posn = 0;
int data_codewords = 0, size;
int codewords;
int bitmask;
int error_number;
int bin_len;
int done;
char function_information[36];
unsigned char fi_cw[3] = {0, 0, 0};
unsigned char fi_ecc[4];
@ -1339,42 +1340,65 @@ int han_xin(struct zint_symbol *symbol, const unsigned char source[], int length
posn = 0;
for (i = 0; i < length; i++) {
done = 0;
gbdata[posn] = 0;
/* Single byte characters in range U+0000 -> U+007F */
if (utfdata[i] <= 0x7f) {
gbdata[posn] = utfdata[i];
posn++;
} else {
done = 1;
}
/* Two bytes characters */
if (done == 0) {
j = 0;
glyph = 0;
do {
if (gb18030_twobyte_lookup[j * 2] == utfdata[i]) {
glyph = gb18030_twobyte_lookup[(j * 2) + 1];
gbdata[posn] = gb18030_twobyte_lookup[(j * 2) + 1];
posn++;
done = 1;
}
j++;
} while ((j < 23940) && (glyph == 0));
} while ((j < 23940) && (done == 0));
}
if (glyph == 0) {
/* Four byte characters in range U+0080 -> U+FFFF */
if (done == 0) {
j = 0;
glyph = 0;
glyph2 = 0;
do {
if (gb18030_fourbyte_lookup[j * 3] == utfdata[i]) {
glyph = gb18030_fourbyte_lookup[(j * 3) + 1];
glyph2 = gb18030_fourbyte_lookup[(j * 3) + 2];
gbdata[posn] = gb18030_fourbyte_lookup[(j * 3) + 1];
gbdata[posn + 1] = gb18030_fourbyte_lookup[(j * 3) + 2];
posn += 2;
done = 1;
}
j++;
} while ((j < 6793) && (glyph == 0));
if (glyph == 0) {
} while ((j < 6793) && (done == 0));
}
/* Supplementary planes U+10000 -> U+1FFFF */
if (done == 0) {
if (utfdata[i] >= 0x10000 && utfdata[i] < 0x110000) {
/* algorithm from libiconv-1.15\lib\gb18030.h */
int j, r3, r2, r1, r0;
j = utfdata[i] - 0x10000;
r3 = (j % 10) + 0x30; j = j / 10;
r2 = (j % 126) + 0x81; j = j / 126;
r1 = (j % 10) + 0x30; j = j / 10;
r0 = j + 0x90;
gbdata[posn] = (r0 << 8) + r1;
gbdata[posn + 1] = (r2 << 8) + r3;
posn += 2;
done = 1;
}
}
/* Character not found */
if (done == 0) {
strcpy(symbol->errtxt, "Unknown character in input data (E40)");
return ZINT_ERROR_INVALID_DATA;
} else {
gbdata[posn] = glyph;
gbdata[posn + 1] = glyph2;
posn += 2;
}
} else {
gbdata[posn] = glyph;
posn++;
}
}
}
length = posn;