diff options
Diffstat (limited to 'lib/iconv.c')
-rw-r--r-- | lib/iconv.c | 449 |
1 files changed, 0 insertions, 449 deletions
diff --git a/lib/iconv.c b/lib/iconv.c deleted file mode 100644 index 850c8b7..0000000 --- a/lib/iconv.c +++ /dev/null @@ -1,449 +0,0 @@ -/* Character set conversion. - Copyright (C) 1999-2001, 2007, 2009-2015 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program 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 Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License along - with this program; if not, see <http://www.gnu.org/licenses/>. */ - -#include <config.h> - -/* Specification. */ -#include <iconv.h> - -#include <stddef.h> - -#if REPLACE_ICONV_UTF -# include <errno.h> -# include <stdint.h> -# include <stdlib.h> -# include "unistr.h" -# ifndef uintptr_t -# define uintptr_t unsigned long -# endif -#endif - -#if REPLACE_ICONV_UTF - -/* UTF-{16,32}{BE,LE} converters taken from GNU libiconv 1.11. */ - -/* Return code if invalid. (xxx_mbtowc) */ -# define RET_ILSEQ -1 -/* Return code if no bytes were read. (xxx_mbtowc) */ -# define RET_TOOFEW -2 - -/* Return code if invalid. (xxx_wctomb) */ -# define RET_ILUNI -1 -/* Return code if output buffer is too small. (xxx_wctomb, xxx_reset) */ -# define RET_TOOSMALL -2 - -/* - * UTF-16BE - */ - -/* Specification: RFC 2781 */ - -static int -utf16be_mbtowc (ucs4_t *pwc, const unsigned char *s, size_t n) -{ - if (n >= 2) - { - ucs4_t wc = (s[0] << 8) + s[1]; - if (wc >= 0xd800 && wc < 0xdc00) - { - if (n >= 4) - { - ucs4_t wc2 = (s[2] << 8) + s[3]; - if (!(wc2 >= 0xdc00 && wc2 < 0xe000)) - return RET_ILSEQ; - *pwc = 0x10000 + ((wc - 0xd800) << 10) + (wc2 - 0xdc00); - return 4; - } - } - else if (wc >= 0xdc00 && wc < 0xe000) - { - return RET_ILSEQ; - } - else - { - *pwc = wc; - return 2; - } - } - return RET_TOOFEW; -} - -static int -utf16be_wctomb (unsigned char *r, ucs4_t wc, size_t n) -{ - if (!(wc >= 0xd800 && wc < 0xe000)) - { - if (wc < 0x10000) - { - if (n >= 2) - { - r[0] = (unsigned char) (wc >> 8); - r[1] = (unsigned char) wc; - return 2; - } - else - return RET_TOOSMALL; - } - else if (wc < 0x110000) - { - if (n >= 4) - { - ucs4_t wc1 = 0xd800 + ((wc - 0x10000) >> 10); - ucs4_t wc2 = 0xdc00 + ((wc - 0x10000) & 0x3ff); - r[0] = (unsigned char) (wc1 >> 8); - r[1] = (unsigned char) wc1; - r[2] = (unsigned char) (wc2 >> 8); - r[3] = (unsigned char) wc2; - return 4; - } - else - return RET_TOOSMALL; - } - } - return RET_ILUNI; -} - -/* - * UTF-16LE - */ - -/* Specification: RFC 2781 */ - -static int -utf16le_mbtowc (ucs4_t *pwc, const unsigned char *s, size_t n) -{ - if (n >= 2) - { - ucs4_t wc = s[0] + (s[1] << 8); - if (wc >= 0xd800 && wc < 0xdc00) - { - if (n >= 4) - { - ucs4_t wc2 = s[2] + (s[3] << 8); - if (!(wc2 >= 0xdc00 && wc2 < 0xe000)) - return RET_ILSEQ; - *pwc = 0x10000 + ((wc - 0xd800) << 10) + (wc2 - 0xdc00); - return 4; - } - } - else if (wc >= 0xdc00 && wc < 0xe000) - { - return RET_ILSEQ; - } - else - { - *pwc = wc; - return 2; - } - } - return RET_TOOFEW; -} - -static int -utf16le_wctomb (unsigned char *r, ucs4_t wc, size_t n) -{ - if (!(wc >= 0xd800 && wc < 0xe000)) - { - if (wc < 0x10000) - { - if (n >= 2) - { - r[0] = (unsigned char) wc; - r[1] = (unsigned char) (wc >> 8); - return 2; - } - else - return RET_TOOSMALL; - } - else if (wc < 0x110000) - { - if (n >= 4) - { - ucs4_t wc1 = 0xd800 + ((wc - 0x10000) >> 10); - ucs4_t wc2 = 0xdc00 + ((wc - 0x10000) & 0x3ff); - r[0] = (unsigned char) wc1; - r[1] = (unsigned char) (wc1 >> 8); - r[2] = (unsigned char) wc2; - r[3] = (unsigned char) (wc2 >> 8); - return 4; - } - else - return RET_TOOSMALL; - } - } - return RET_ILUNI; -} - -/* - * UTF-32BE - */ - -/* Specification: Unicode 3.1 Standard Annex #19 */ - -static int -utf32be_mbtowc (ucs4_t *pwc, const unsigned char *s, size_t n) -{ - if (n >= 4) - { - ucs4_t wc = (s[0] << 24) + (s[1] << 16) + (s[2] << 8) + s[3]; - if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000)) - { - *pwc = wc; - return 4; - } - else - return RET_ILSEQ; - } - return RET_TOOFEW; -} - -static int -utf32be_wctomb (unsigned char *r, ucs4_t wc, size_t n) -{ - if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000)) - { - if (n >= 4) - { - r[0] = 0; - r[1] = (unsigned char) (wc >> 16); - r[2] = (unsigned char) (wc >> 8); - r[3] = (unsigned char) wc; - return 4; - } - else - return RET_TOOSMALL; - } - return RET_ILUNI; -} - -/* - * UTF-32LE - */ - -/* Specification: Unicode 3.1 Standard Annex #19 */ - -static int -utf32le_mbtowc (ucs4_t *pwc, const unsigned char *s, size_t n) -{ - if (n >= 4) - { - ucs4_t wc = s[0] + (s[1] << 8) + (s[2] << 16) + (s[3] << 24); - if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000)) - { - *pwc = wc; - return 4; - } - else - return RET_ILSEQ; - } - return RET_TOOFEW; -} - -static int -utf32le_wctomb (unsigned char *r, ucs4_t wc, size_t n) -{ - if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000)) - { - if (n >= 4) - { - r[0] = (unsigned char) wc; - r[1] = (unsigned char) (wc >> 8); - r[2] = (unsigned char) (wc >> 16); - r[3] = 0; - return 4; - } - else - return RET_TOOSMALL; - } - return RET_ILUNI; -} - -#endif - -size_t -rpl_iconv (iconv_t cd, - ICONV_CONST char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft) -#undef iconv -{ -#if REPLACE_ICONV_UTF - switch ((uintptr_t) cd) - { - { - int (*xxx_wctomb) (unsigned char *, ucs4_t, size_t); - - case (uintptr_t) _ICONV_UTF8_UTF16BE: - xxx_wctomb = utf16be_wctomb; - goto loop_from_utf8; - case (uintptr_t) _ICONV_UTF8_UTF16LE: - xxx_wctomb = utf16le_wctomb; - goto loop_from_utf8; - case (uintptr_t) _ICONV_UTF8_UTF32BE: - xxx_wctomb = utf32be_wctomb; - goto loop_from_utf8; - case (uintptr_t) _ICONV_UTF8_UTF32LE: - xxx_wctomb = utf32le_wctomb; - goto loop_from_utf8; - - loop_from_utf8: - if (inbuf == NULL || *inbuf == NULL) - return 0; - { - ICONV_CONST char *inptr = *inbuf; - size_t inleft = *inbytesleft; - char *outptr = *outbuf; - size_t outleft = *outbytesleft; - size_t res = 0; - while (inleft > 0) - { - ucs4_t uc; - int m = u8_mbtoucr (&uc, (const uint8_t *) inptr, inleft); - if (m <= 0) - { - if (m == -1) - { - errno = EILSEQ; - res = (size_t)(-1); - break; - } - if (m == -2) - { - errno = EINVAL; - res = (size_t)(-1); - break; - } - abort (); - } - else - { - int n = xxx_wctomb ((uint8_t *) outptr, uc, outleft); - if (n < 0) - { - if (n == RET_ILUNI) - { - errno = EILSEQ; - res = (size_t)(-1); - break; - } - if (n == RET_TOOSMALL) - { - errno = E2BIG; - res = (size_t)(-1); - break; - } - abort (); - } - else - { - inptr += m; - inleft -= m; - outptr += n; - outleft -= n; - } - } - } - *inbuf = inptr; - *inbytesleft = inleft; - *outbuf = outptr; - *outbytesleft = outleft; - return res; - } - } - - { - int (*xxx_mbtowc) (ucs4_t *, const unsigned char *, size_t); - - case (uintptr_t) _ICONV_UTF16BE_UTF8: - xxx_mbtowc = utf16be_mbtowc; - goto loop_to_utf8; - case (uintptr_t) _ICONV_UTF16LE_UTF8: - xxx_mbtowc = utf16le_mbtowc; - goto loop_to_utf8; - case (uintptr_t) _ICONV_UTF32BE_UTF8: - xxx_mbtowc = utf32be_mbtowc; - goto loop_to_utf8; - case (uintptr_t) _ICONV_UTF32LE_UTF8: - xxx_mbtowc = utf32le_mbtowc; - goto loop_to_utf8; - - loop_to_utf8: - if (inbuf == NULL || *inbuf == NULL) - return 0; - { - ICONV_CONST char *inptr = *inbuf; - size_t inleft = *inbytesleft; - char *outptr = *outbuf; - size_t outleft = *outbytesleft; - size_t res = 0; - while (inleft > 0) - { - ucs4_t uc; - int m = xxx_mbtowc (&uc, (const uint8_t *) inptr, inleft); - if (m <= 0) - { - if (m == RET_ILSEQ) - { - errno = EILSEQ; - res = (size_t)(-1); - break; - } - if (m == RET_TOOFEW) - { - errno = EINVAL; - res = (size_t)(-1); - break; - } - abort (); - } - else - { - int n = u8_uctomb ((uint8_t *) outptr, uc, outleft); - if (n < 0) - { - if (n == -1) - { - errno = EILSEQ; - res = (size_t)(-1); - break; - } - if (n == -2) - { - errno = E2BIG; - res = (size_t)(-1); - break; - } - abort (); - } - else - { - inptr += m; - inleft -= m; - outptr += n; - outleft -= n; - } - } - } - *inbuf = inptr; - *inbytesleft = inleft; - *outbuf = outptr; - *outbytesleft = outleft; - return res; - } - } - } -#endif - return iconv (cd, inbuf, inbytesleft, outbuf, outbytesleft); -} |