X-Git-Url: http://sjero.net/git/?p=wget;a=blobdiff_plain;f=lib%2Fmbrtowc.c;fp=lib%2Fmbrtowc.c;h=0000000000000000000000000000000000000000;hp=0fec5f1c9fac3c67af2fde58774c55b44bd97dcf;hb=9c23efbf57cbfe4ba0fbe833c6956bf567b5b00e;hpb=282798f52e2cde76eaeb1384d6fcbdc624c79611 diff --git a/lib/mbrtowc.c b/lib/mbrtowc.c deleted file mode 100644 index 0fec5f1c..00000000 --- a/lib/mbrtowc.c +++ /dev/null @@ -1,386 +0,0 @@ -/* Convert multibyte character to wide character. - Copyright (C) 1999-2002, 2005-2009 Free Software Foundation, Inc. - Written by Bruno Haible , 2008. - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . */ - -#include - -/* Specification. */ -#include - -#if GNULIB_defined_mbstate_t -/* Implement mbrtowc() on top of mbtowc(). */ - -# include -# include - -# include "localcharset.h" -# include "streq.h" -# include "verify.h" - - -verify (sizeof (mbstate_t) >= 4); - -static char internal_state[4]; - -size_t -mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps) -{ - char *pstate = (char *)ps; - - if (pstate == NULL) - pstate = internal_state; - - if (s == NULL) - { - pwc = NULL; - s = ""; - n = 1; - } - - if (n == 0) - return (size_t)(-2); - - /* Here n > 0. */ - { - size_t nstate = pstate[0]; - char buf[4]; - const char *p; - size_t m; - - switch (nstate) - { - case 0: - p = s; - m = n; - break; - case 3: - buf[2] = pstate[3]; - /*FALLTHROUGH*/ - case 2: - buf[1] = pstate[2]; - /*FALLTHROUGH*/ - case 1: - buf[0] = pstate[1]; - p = buf; - m = nstate; - buf[m++] = s[0]; - if (n >= 2 && m < 4) - { - buf[m++] = s[1]; - if (n >= 3 && m < 4) - buf[m++] = s[2]; - } - break; - default: - errno = EINVAL; - return (size_t)(-1); - } - - /* Here m > 0. */ - -# if __GLIBC__ - /* Work around bug */ - mbtowc (NULL, NULL, 0); -# endif - { - int res = mbtowc (pwc, p, m); - - if (res >= 0) - { - if (pwc != NULL && ((*pwc == 0) != (res == 0))) - abort (); - if (nstate >= (res > 0 ? res : 1)) - abort (); - res -= nstate; - pstate[0] = 0; - return res; - } - - /* mbtowc does not distinguish between invalid and incomplete multibyte - sequences. But mbrtowc needs to make this distinction. - There are two possible approaches: - - Use iconv() and its return value. - - Use built-in knowledge about the possible encodings. - Given the low quality of implementation of iconv() on the systems that - lack mbrtowc(), we use the second approach. - The possible encodings are: - - 8-bit encodings, - - EUC-JP, EUC-KR, GB2312, EUC-TW, BIG5, GB18030, SJIS, - - UTF-8. - Use specialized code for each. */ - if (m >= 4 || m >= MB_CUR_MAX) - goto invalid; - /* Here MB_CUR_MAX > 1 and 0 < m < 4. */ - { - const char *encoding = locale_charset (); - - if (STREQ (encoding, "UTF-8", 'U', 'T', 'F', '-', '8', 0, 0, 0, 0)) - { - /* Cf. unistr/u8-mblen.c. */ - unsigned char c = (unsigned char) p[0]; - - if (c >= 0xc2) - { - if (c < 0xe0) - { - if (m == 1) - goto incomplete; - } - else if (c < 0xf0) - { - if (m == 1) - goto incomplete; - if (m == 2) - { - unsigned char c2 = (unsigned char) p[1]; - - if ((c2 ^ 0x80) < 0x40 - && (c >= 0xe1 || c2 >= 0xa0) - && (c != 0xed || c2 < 0xa0)) - goto incomplete; - } - } - else if (c <= 0xf4) - { - if (m == 1) - goto incomplete; - else /* m == 2 || m == 3 */ - { - unsigned char c2 = (unsigned char) p[1]; - - if ((c2 ^ 0x80) < 0x40 - && (c >= 0xf1 || c2 >= 0x90) - && (c < 0xf4 || (c == 0xf4 && c2 < 0x90))) - { - if (m == 2) - goto incomplete; - else /* m == 3 */ - { - unsigned char c3 = (unsigned char) p[2]; - - if ((c3 ^ 0x80) < 0x40) - goto incomplete; - } - } - } - } - } - goto invalid; - } - - /* As a reference for this code, you can use the GNU libiconv - implementation. Look for uses of the RET_TOOFEW macro. */ - - if (STREQ (encoding, "EUC-JP", 'E', 'U', 'C', '-', 'J', 'P', 0, 0, 0)) - { - if (m == 1) - { - unsigned char c = (unsigned char) p[0]; - - if ((c >= 0xa1 && c < 0xff) || c == 0x8e || c == 0x8f) - goto incomplete; - } - if (m == 2) - { - unsigned char c = (unsigned char) p[0]; - - if (c == 0x8f) - { - unsigned char c2 = (unsigned char) p[1]; - - if (c2 >= 0xa1 && c2 < 0xff) - goto incomplete; - } - } - goto invalid; - } - if (STREQ (encoding, "EUC-KR", 'E', 'U', 'C', '-', 'K', 'R', 0, 0, 0) - || STREQ (encoding, "GB2312", 'G', 'B', '2', '3', '1', '2', 0, 0, 0) - || STREQ (encoding, "BIG5", 'B', 'I', 'G', '5', 0, 0, 0, 0, 0)) - { - if (m == 1) - { - unsigned char c = (unsigned char) p[0]; - - if (c >= 0xa1 && c < 0xff) - goto incomplete; - } - goto invalid; - } - if (STREQ (encoding, "EUC-TW", 'E', 'U', 'C', '-', 'T', 'W', 0, 0, 0)) - { - if (m == 1) - { - unsigned char c = (unsigned char) p[0]; - - if ((c >= 0xa1 && c < 0xff) || c == 0x8e) - goto incomplete; - } - else /* m == 2 || m == 3 */ - { - unsigned char c = (unsigned char) p[0]; - - if (c == 0x8e) - goto incomplete; - } - goto invalid; - } - if (STREQ (encoding, "GB18030", 'G', 'B', '1', '8', '0', '3', '0', 0, 0)) - { - if (m == 1) - { - unsigned char c = (unsigned char) p[0]; - - if ((c >= 0x90 && c <= 0xe3) || (c >= 0xf8 && c <= 0xfe)) - goto incomplete; - } - else /* m == 2 || m == 3 */ - { - unsigned char c = (unsigned char) p[0]; - - if (c >= 0x90 && c <= 0xe3) - { - unsigned char c2 = (unsigned char) p[1]; - - if (c2 >= 0x30 && c2 <= 0x39) - { - if (m == 2) - goto incomplete; - else /* m == 3 */ - { - unsigned char c3 = (unsigned char) p[2]; - - if (c3 >= 0x81 && c3 <= 0xfe) - goto incomplete; - } - } - } - } - goto invalid; - } - if (STREQ (encoding, "SJIS", 'S', 'J', 'I', 'S', 0, 0, 0, 0, 0)) - { - if (m == 1) - { - unsigned char c = (unsigned char) p[0]; - - if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xea) - || (c >= 0xf0 && c <= 0xf9)) - goto incomplete; - } - goto invalid; - } - - /* An unknown multibyte encoding. */ - goto incomplete; - } - - incomplete: - { - size_t k = nstate; - /* Here 0 <= k < m < 4. */ - pstate[++k] = s[0]; - if (k < m) - { - pstate[++k] = s[1]; - if (k < m) - pstate[++k] = s[2]; - } - if (k != m) - abort (); - } - pstate[0] = m; - return (size_t)(-2); - - invalid: - errno = EILSEQ; - /* The conversion state is undefined, says POSIX. */ - return (size_t)(-1); - } - } -} - -#else -/* Override the system's mbrtowc() function. */ - -# undef mbrtowc - -size_t -rpl_mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps) -{ -# if MBRTOWC_NULL_ARG_BUG || MBRTOWC_RETVAL_BUG - if (s == NULL) - { - pwc = NULL; - s = ""; - n = 1; - } -# endif - -# if MBRTOWC_RETVAL_BUG - { - static mbstate_t internal_state; - - /* Override mbrtowc's internal state. We can not call mbsinit() on the - hidden internal state, but we can call it on our variable. */ - if (ps == NULL) - ps = &internal_state; - - if (!mbsinit (ps)) - { - /* Parse the rest of the multibyte character byte for byte. */ - size_t count = 0; - for (; n > 0; s++, n--) - { - wchar_t wc; - size_t ret = mbrtowc (&wc, s, 1, ps); - - if (ret == (size_t)(-1)) - return (size_t)(-1); - count++; - if (ret != (size_t)(-2)) - { - /* The multibyte character has been completed. */ - if (pwc != NULL) - *pwc = wc; - return (wc == 0 ? 0 : count); - } - } - return (size_t)(-2); - } - } -# endif - -# if MBRTOWC_NUL_RETVAL_BUG - { - wchar_t wc; - size_t ret = mbrtowc (&wc, s, n, ps); - - if (ret != (size_t)(-1) && ret != (size_t)(-2)) - { - if (pwc != NULL) - *pwc = wc; - if (wc == 0) - ret = 0; - } - return ret; - } -# else - return mbrtowc (pwc, s, n, ps); -# endif -} - -#endif