2 * Copyright (C) 1999-2002, 2016 Free Software Foundation, Inc.
3 * This file is part of the GNU LIBICONV Library.
5 * The GNU LIBICONV Library is free software; you can redistribute it
6 * and/or modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * The GNU LIBICONV Library is distributed in the hope that it will be
11 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
17 * If not, see <http://www.gnu.org/licenses/>.
22 * This is ASCII with \uXXXX and \UXXXXXXXX escape sequences, denoting Unicode
23 * characters. See ISO/IEC 9899:1999, section 6.4.3.
24 * The treatment of control characters in the range U+0080..U+009F is not
25 * specified; we pass them through unmodified.
29 c99_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
46 for (i = 2; i < 6; i++) {
50 if (c >= '0' && c <= '9')
52 else if (c >= 'A' && c <= 'Z')
54 else if (c >= 'a' && c <= 'z')
57 goto simply_backslash;
58 wc |= (ucs4_t) c << (4 * (5-i));
60 if ((wc >= 0x00a0 && !(wc >= 0xd800 && wc < 0xe000))
61 || wc == 0x0024 || wc == 0x0040 || wc == 0x0060) {
65 } else if (c == 'U') {
67 for (i = 2; i < 10; i++) {
71 if (c >= '0' && c <= '9')
73 else if (c >= 'A' && c <= 'Z')
75 else if (c >= 'a' && c <= 'z')
78 goto simply_backslash;
79 wc |= (ucs4_t) c << (4 * (9-i));
81 if ((wc >= 0x00a0 && !(wc >= 0xd800 && wc < 0xe000))
82 || wc == 0x0024 || wc == 0x0040 || wc == 0x0060) {
87 goto simply_backslash;
96 c99_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
116 for (count = result-3; count >= 0; count--) {
117 unsigned int i = (wc >> (4*count)) & 0x0f;
118 *r++ = (i < 10 ? '0'+i : 'a'-10+i);