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