138 lines
4.0 KiB
C
138 lines
4.0 KiB
C
/*
|
|
* Copyright (C) 1999-2002 Free Software Foundation, Inc.
|
|
* This file is part of the GNU LIBICONV Library.
|
|
*
|
|
* The GNU LIBICONV Library is free software; you can redistribute it
|
|
* and/or modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* The GNU LIBICONV Library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with the GNU LIBICONV Library; see the file COPYING.LIB.
|
|
* If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
|
|
* Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
/*
|
|
* JAVA
|
|
* This is ISO 8859-1 with \uXXXX escape sequences, denoting Unicode BMP
|
|
* characters. Consecutive pairs of \uXXXX escape sequences in the surrogate
|
|
* range, as in UTF-16, denote Unicode characters outside the BMP.
|
|
*/
|
|
|
|
static int
|
|
java_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
|
|
{
|
|
unsigned char c;
|
|
ucs4_t wc, wc2;
|
|
int i;
|
|
|
|
c = s[0];
|
|
if (c != '\\') {
|
|
*pwc = c;
|
|
return 1;
|
|
}
|
|
if (n < 2)
|
|
return RET_TOOFEW(0);
|
|
if (s[1] != 'u')
|
|
goto simply_backslash;
|
|
wc = 0;
|
|
for (i = 2; i < 6; i++) {
|
|
if (n <= i)
|
|
return RET_TOOFEW(0);
|
|
c = s[i];
|
|
if (c >= '0' && c <= '9')
|
|
c -= '0';
|
|
else if (c >= 'A' && c <= 'Z')
|
|
c -= 'A'-10;
|
|
else if (c >= 'a' && c <= 'z')
|
|
c -= 'a'-10;
|
|
else
|
|
goto simply_backslash;
|
|
wc |= (ucs4_t) c << (4 * (5-i));
|
|
}
|
|
if (!(wc >= 0xd800 && wc < 0xe000)) {
|
|
*pwc = wc;
|
|
return 6;
|
|
}
|
|
if (wc >= 0xdc00)
|
|
goto simply_backslash;
|
|
if (n < 7)
|
|
return RET_TOOFEW(0);
|
|
if (s[6] != '\\')
|
|
goto simply_backslash;
|
|
if (n < 8)
|
|
return RET_TOOFEW(0);
|
|
if (s[7] != 'u')
|
|
goto simply_backslash;
|
|
wc2 = 0;
|
|
for (i = 8; i < 12; i++) {
|
|
if (n <= i)
|
|
return RET_TOOFEW(0);
|
|
c = s[i];
|
|
if (c >= '0' && c <= '9')
|
|
c -= '0';
|
|
else if (c >= 'A' && c <= 'Z')
|
|
c -= 'A'-10;
|
|
else if (c >= 'a' && c <= 'z')
|
|
c -= 'a'-10;
|
|
else
|
|
goto simply_backslash;
|
|
wc2 |= (ucs4_t) c << (4 * (11-i));
|
|
}
|
|
if (!(wc2 >= 0xdc00 && wc2 < 0xe000))
|
|
goto simply_backslash;
|
|
*pwc = 0x10000 + ((wc - 0xd800) << 10) + (wc2 - 0xdc00);
|
|
return 12;
|
|
simply_backslash:
|
|
*pwc = '\\';
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
java_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
|
|
{
|
|
if (wc < 0x80) {
|
|
*r = wc;
|
|
return 1;
|
|
} else if (wc < 0x10000) {
|
|
if (n >= 6) {
|
|
unsigned int i;
|
|
r[0] = '\\';
|
|
r[1] = 'u';
|
|
i = (wc >> 12) & 0x0f; r[2] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
i = (wc >> 8) & 0x0f; r[3] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
i = (wc >> 4) & 0x0f; r[4] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
i = wc & 0x0f; r[5] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
return 6;
|
|
} else
|
|
return RET_TOOSMALL;
|
|
} else if (wc < 0x110000) {
|
|
if (n >= 12) {
|
|
ucs4_t wc1 = 0xd800 + ((wc - 0x10000) >> 10);
|
|
ucs4_t wc2 = 0xdc00 + ((wc - 0x10000) & 0x3ff);
|
|
unsigned int i;
|
|
r[0] = '\\';
|
|
r[1] = 'u';
|
|
i = (wc1 >> 12) & 0x0f; r[2] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
i = (wc1 >> 8) & 0x0f; r[3] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
i = (wc1 >> 4) & 0x0f; r[4] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
i = wc1 & 0x0f; r[5] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
r[6] = '\\';
|
|
r[7] = 'u';
|
|
i = (wc2 >> 12) & 0x0f; r[8] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
i = (wc2 >> 8) & 0x0f; r[9] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
i = (wc2 >> 4) & 0x0f; r[10] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
i = wc2 & 0x0f; r[11] = (i < 10 ? '0'+i : 'a'-10+i);
|
|
return 12;
|
|
} else
|
|
return RET_TOOSMALL;
|
|
}
|
|
return RET_ILUNI;
|
|
}
|