diff options
author | pixel <pixel> | 2004-11-27 21:46:02 +0000 |
---|---|---|
committer | pixel <pixel> | 2004-11-27 21:46:02 +0000 |
commit | ae2779e504ca5ae11a87e047b4536a5f428cce4d (patch) | |
tree | 19604ce1873e9cc98be9b840b894cb7eae341532 /MSVC/readline/mbutil.c | |
parent | 583964f9f8e954eb57b31663065c5b9e833d045e (diff) |
Large dos2unix commit...
Diffstat (limited to 'MSVC/readline/mbutil.c')
-rw-r--r-- | MSVC/readline/mbutil.c | 690 |
1 files changed, 345 insertions, 345 deletions
diff --git a/MSVC/readline/mbutil.c b/MSVC/readline/mbutil.c index a0df9f4..a955778 100644 --- a/MSVC/readline/mbutil.c +++ b/MSVC/readline/mbutil.c @@ -1,345 +1,345 @@ -/* mbutil.c -- readline multibyte character utility functions */
-
-/* Copyright (C) 2001 Free Software Foundation, Inc.
-
- This file is part of the GNU Readline Library, a library for
- reading lines of text with interactive input and history editing.
-
- The GNU Readline Library 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 2, or
- (at your option) any later version.
-
- The GNU Readline 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 General Public License for more details.
-
- The GNU General Public License is often shipped with GNU software, and
- is generally kept in a file called COPYING or LICENSE. If you do not
- have a copy of the license, write to the Free Software Foundation,
- 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
-#define READLINE_LIBRARY
-
-#include "config.h"
-
-#include <sys/types.h>
-#include <fcntl.h>
-#include "posixjmp.h"
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h> /* for _POSIX_VERSION */
-#endif /* HAVE_UNISTD_H */
-
-#if defined (HAVE_STDLIB_H)
-# include <stdlib.h>
-#else
-# include "ansi_stdlib.h"
-#endif /* HAVE_STDLIB_H */
-
-#include <stdio.h>
-#include <ctype.h>
-
-/* System-specific feature definitions and include files. */
-#include "rldefs.h"
-#include "rlmbutil.h"
-
-#if defined (TIOCSTAT_IN_SYS_IOCTL)
-# include <sys/ioctl.h>
-#endif /* TIOCSTAT_IN_SYS_IOCTL */
-
-/* Some standard library routines. */
-#include "readline.h"
-
-#include "rlprivate.h"
-#include "xmalloc.h"
-
-/* Declared here so it can be shared between the readline and history
- libraries. */
-#if defined (HANDLE_MULTIBYTE)
-int rl_byte_oriented = 0;
-#else
-int rl_byte_oriented = 1;
-#endif
-
-/* **************************************************************** */
-/* */
-/* Multibyte Character Utility Functions */
-/* */
-/* **************************************************************** */
-
-#if defined(HANDLE_MULTIBYTE)
-
-int
-wcwidth (wchar_t wc)
-{
- if (wc == 0)
- return 0;
- else if (0xff < wc)
- return 2;
- return -1;
-}
-
-static int
-_rl_find_next_mbchar_internal (string, seed, count, find_non_zero)
- char *string;
- int seed, count, find_non_zero;
-{
- size_t tmp = 0;
- mbstate_t ps;
- int point = 0;
- wchar_t wc;
-
- memset(&ps, 0, sizeof (mbstate_t));
- if (seed < 0)
- seed = 0;
- if (count <= 0)
- return seed;
-
- point = seed + _rl_adjust_point(string, seed, &ps);
- /* if this is true, means that seed was not pointed character
- started byte. So correct the point and consume count */
- if (seed < point)
- count --;
-
- while (count > 0)
- {
- tmp = mbrtowc (&wc, string+point, strlen(string + point), &ps);
- if ((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2)
- {
- /* invalid bytes. asume a byte represents a character */
- point++;
- count--;
- /* reset states. */
- memset(&ps, 0, sizeof(mbstate_t));
- }
- else if (tmp == (size_t)0)
- /* found '\0' char */
- break;
- else
- {
- /* valid bytes */
- point += tmp;
- if (find_non_zero)
- {
- if (wcwidth (wc) == 0)
- continue;
- else
- count--;
- }
- else
- count--;
- }
- }
-
- if (find_non_zero)
- {
- tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps);
- while (wcwidth (wc) == 0)
- {
- point += tmp;
- tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps);
- if (tmp == (size_t)(0) || tmp == (size_t)(-1) || tmp == (size_t)(-2))
- break;
- }
- }
- return point;
-}
-
-static int
-_rl_find_prev_mbchar_internal (string, seed, find_non_zero)
- char *string;
- int seed, find_non_zero;
-{
- mbstate_t ps;
- int prev, non_zero_prev, point, length;
- size_t tmp;
- wchar_t wc;
-
- memset(&ps, 0, sizeof(mbstate_t));
- length = strlen(string);
-
- if (seed < 0)
- return 0;
- else if (length < seed)
- return length;
-
- prev = non_zero_prev = point = 0;
- while (point < seed)
- {
- tmp = mbrtowc (&wc, string + point, length - point, &ps);
- if ((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2)
- {
- /* in this case, bytes are invalid or shorted to compose
- multibyte char, so assume that the first byte represents
- a single character anyway. */
- tmp = 1;
- /* clear the state of the byte sequence, because
- in this case effect of mbstate is undefined */
- memset(&ps, 0, sizeof (mbstate_t));
- }
- else if (tmp == 0)
- break; /* Found '\0' char. Can this happen? */
- else
- {
- if (find_non_zero)
- {
- if (wcwidth (wc) != 0)
- prev = point;
- }
- else
- prev = point;
- }
-
- point += tmp;
- }
-
- return prev;
-}
-
-/* return the number of bytes parsed from the multibyte sequence starting
- at src, if a non-L'\0' wide character was recognized. It returns 0,
- if a L'\0' wide character was recognized. It returns (size_t)(-1),
- if an invalid multibyte sequence was encountered. It returns (size_t)(-2)
- if it couldn't parse a complete multibyte character. */
-int
-_rl_get_char_len (src, ps)
- char *src;
- mbstate_t *ps;
-{
- size_t tmp;
-
- tmp = mbrlen((const char *)src, (size_t)strlen (src), ps);
- if (tmp == (size_t)(-2))
- {
- /* shorted to compose multibyte char */
- memset (ps, 0, sizeof(mbstate_t));
- return -2;
- }
- else if (tmp == (size_t)(-1))
- {
- /* invalid to compose multibyte char */
- /* initialize the conversion state */
- memset (ps, 0, sizeof(mbstate_t));
- return -1;
- }
- else if (tmp == (size_t)0)
- return 0;
- else
- return (int)tmp;
-}
-
-/* compare the specified two characters. If the characters matched,
- return 1. Otherwise return 0. */
-int
-_rl_compare_chars (buf1, pos1, ps1, buf2, pos2, ps2)
- char *buf1, *buf2;
- mbstate_t *ps1, *ps2;
- int pos1, pos2;
-{
- int i, w1, w2;
-
- if ((w1 = _rl_get_char_len (&buf1[pos1], ps1)) <= 0 ||
- (w2 = _rl_get_char_len (&buf2[pos2], ps2)) <= 0 ||
- (w1 != w2) ||
- (buf1[pos1] != buf2[pos2]))
- return 0;
-
- for (i = 1; i < w1; i++)
- if (buf1[pos1+i] != buf2[pos2+i])
- return 0;
-
- return 1;
-}
-
-/* adjust pointed byte and find mbstate of the point of string.
- adjusted point will be point <= adjusted_point, and returns
- differences of the byte(adjusted_point - point).
- if point is invalied (point < 0 || more than string length),
- it returns -1 */
-int
-_rl_adjust_point(string, point, ps)
- char *string;
- int point;
- mbstate_t *ps;
-{
- size_t tmp = 0;
- int length;
- int pos = 0;
-
- length = strlen(string);
- if (point < 0)
- return -1;
- if (length < point)
- return -1;
-
- while (pos < point)
- {
- tmp = mbrlen (string + pos, length - pos, ps);
- if((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2)
- {
- /* in this case, bytes are invalid or shorted to compose
- multibyte char, so assume that the first byte represents
- a single character anyway. */
- pos++;
- /* clear the state of the byte sequence, because
- in this case effect of mbstate is undefined */
- memset (ps, 0, sizeof (mbstate_t));
- }
- else
- pos += tmp;
- }
-
- return (pos - point);
-}
-
-int
-_rl_is_mbchar_matched (string, seed, end, mbchar, length)
- char *string;
- int seed, end;
- char *mbchar;
- int length;
-{
- int i;
-
- if ((end - seed) < length)
- return 0;
-
- for (i = 0; i < length; i++)
- if (string[seed + i] != mbchar[i])
- return 0;
- return 1;
-}
-#endif /* HANDLE_MULTIBYTE */
-
-/* Find next `count' characters started byte point of the specified seed.
- If flags is MB_FIND_NONZERO, we look for non-zero-width multibyte
- characters. */
-#undef _rl_find_next_mbchar
-int
-_rl_find_next_mbchar (string, seed, count, flags)
- char *string;
- int seed, count, flags;
-{
-#if defined (HANDLE_MULTIBYTE)
- return _rl_find_next_mbchar_internal (string, seed, count, flags);
-#else
- return (seed + count);
-#endif
-}
-
-/* Find previous character started byte point of the specified seed.
- Returned point will be point <= seed. If flags is MB_FIND_NONZERO,
- we look for non-zero-width multibyte characters. */
-#undef _rl_find_prev_mbchar
-int
-_rl_find_prev_mbchar (string, seed, flags)
- char *string;
- int seed, flags;
-{
-#if defined (HANDLE_MULTIBYTE)
- return _rl_find_prev_mbchar_internal (string, seed, flags);
-#else
- return ((seed == 0) ? seed : seed - 1);
-#endif
-}
+/* mbutil.c -- readline multibyte character utility functions */ + +/* Copyright (C) 2001 Free Software Foundation, Inc. + + This file is part of the GNU Readline Library, a library for + reading lines of text with interactive input and history editing. + + The GNU Readline Library 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 2, or + (at your option) any later version. + + The GNU Readline 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 General Public License for more details. + + The GNU General Public License is often shipped with GNU software, and + is generally kept in a file called COPYING or LICENSE. If you do not + have a copy of the license, write to the Free Software Foundation, + 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ +#define READLINE_LIBRARY + +#include "config.h" + +#include <sys/types.h> +#include <fcntl.h> +#include "posixjmp.h" + +#if defined (HAVE_UNISTD_H) +# include <unistd.h> /* for _POSIX_VERSION */ +#endif /* HAVE_UNISTD_H */ + +#if defined (HAVE_STDLIB_H) +# include <stdlib.h> +#else +# include "ansi_stdlib.h" +#endif /* HAVE_STDLIB_H */ + +#include <stdio.h> +#include <ctype.h> + +/* System-specific feature definitions and include files. */ +#include "rldefs.h" +#include "rlmbutil.h" + +#if defined (TIOCSTAT_IN_SYS_IOCTL) +# include <sys/ioctl.h> +#endif /* TIOCSTAT_IN_SYS_IOCTL */ + +/* Some standard library routines. */ +#include "readline.h" + +#include "rlprivate.h" +#include "xmalloc.h" + +/* Declared here so it can be shared between the readline and history + libraries. */ +#if defined (HANDLE_MULTIBYTE) +int rl_byte_oriented = 0; +#else +int rl_byte_oriented = 1; +#endif + +/* **************************************************************** */ +/* */ +/* Multibyte Character Utility Functions */ +/* */ +/* **************************************************************** */ + +#if defined(HANDLE_MULTIBYTE) + +int +wcwidth (wchar_t wc) +{ + if (wc == 0) + return 0; + else if (0xff < wc) + return 2; + return -1; +} + +static int +_rl_find_next_mbchar_internal (string, seed, count, find_non_zero) + char *string; + int seed, count, find_non_zero; +{ + size_t tmp = 0; + mbstate_t ps; + int point = 0; + wchar_t wc; + + memset(&ps, 0, sizeof (mbstate_t)); + if (seed < 0) + seed = 0; + if (count <= 0) + return seed; + + point = seed + _rl_adjust_point(string, seed, &ps); + /* if this is true, means that seed was not pointed character + started byte. So correct the point and consume count */ + if (seed < point) + count --; + + while (count > 0) + { + tmp = mbrtowc (&wc, string+point, strlen(string + point), &ps); + if ((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2) + { + /* invalid bytes. asume a byte represents a character */ + point++; + count--; + /* reset states. */ + memset(&ps, 0, sizeof(mbstate_t)); + } + else if (tmp == (size_t)0) + /* found '\0' char */ + break; + else + { + /* valid bytes */ + point += tmp; + if (find_non_zero) + { + if (wcwidth (wc) == 0) + continue; + else + count--; + } + else + count--; + } + } + + if (find_non_zero) + { + tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps); + while (wcwidth (wc) == 0) + { + point += tmp; + tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps); + if (tmp == (size_t)(0) || tmp == (size_t)(-1) || tmp == (size_t)(-2)) + break; + } + } + return point; +} + +static int +_rl_find_prev_mbchar_internal (string, seed, find_non_zero) + char *string; + int seed, find_non_zero; +{ + mbstate_t ps; + int prev, non_zero_prev, point, length; + size_t tmp; + wchar_t wc; + + memset(&ps, 0, sizeof(mbstate_t)); + length = strlen(string); + + if (seed < 0) + return 0; + else if (length < seed) + return length; + + prev = non_zero_prev = point = 0; + while (point < seed) + { + tmp = mbrtowc (&wc, string + point, length - point, &ps); + if ((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2) + { + /* in this case, bytes are invalid or shorted to compose + multibyte char, so assume that the first byte represents + a single character anyway. */ + tmp = 1; + /* clear the state of the byte sequence, because + in this case effect of mbstate is undefined */ + memset(&ps, 0, sizeof (mbstate_t)); + } + else if (tmp == 0) + break; /* Found '\0' char. Can this happen? */ + else + { + if (find_non_zero) + { + if (wcwidth (wc) != 0) + prev = point; + } + else + prev = point; + } + + point += tmp; + } + + return prev; +} + +/* return the number of bytes parsed from the multibyte sequence starting + at src, if a non-L'\0' wide character was recognized. It returns 0, + if a L'\0' wide character was recognized. It returns (size_t)(-1), + if an invalid multibyte sequence was encountered. It returns (size_t)(-2) + if it couldn't parse a complete multibyte character. */ +int +_rl_get_char_len (src, ps) + char *src; + mbstate_t *ps; +{ + size_t tmp; + + tmp = mbrlen((const char *)src, (size_t)strlen (src), ps); + if (tmp == (size_t)(-2)) + { + /* shorted to compose multibyte char */ + memset (ps, 0, sizeof(mbstate_t)); + return -2; + } + else if (tmp == (size_t)(-1)) + { + /* invalid to compose multibyte char */ + /* initialize the conversion state */ + memset (ps, 0, sizeof(mbstate_t)); + return -1; + } + else if (tmp == (size_t)0) + return 0; + else + return (int)tmp; +} + +/* compare the specified two characters. If the characters matched, + return 1. Otherwise return 0. */ +int +_rl_compare_chars (buf1, pos1, ps1, buf2, pos2, ps2) + char *buf1, *buf2; + mbstate_t *ps1, *ps2; + int pos1, pos2; +{ + int i, w1, w2; + + if ((w1 = _rl_get_char_len (&buf1[pos1], ps1)) <= 0 || + (w2 = _rl_get_char_len (&buf2[pos2], ps2)) <= 0 || + (w1 != w2) || + (buf1[pos1] != buf2[pos2])) + return 0; + + for (i = 1; i < w1; i++) + if (buf1[pos1+i] != buf2[pos2+i]) + return 0; + + return 1; +} + +/* adjust pointed byte and find mbstate of the point of string. + adjusted point will be point <= adjusted_point, and returns + differences of the byte(adjusted_point - point). + if point is invalied (point < 0 || more than string length), + it returns -1 */ +int +_rl_adjust_point(string, point, ps) + char *string; + int point; + mbstate_t *ps; +{ + size_t tmp = 0; + int length; + int pos = 0; + + length = strlen(string); + if (point < 0) + return -1; + if (length < point) + return -1; + + while (pos < point) + { + tmp = mbrlen (string + pos, length - pos, ps); + if((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2) + { + /* in this case, bytes are invalid or shorted to compose + multibyte char, so assume that the first byte represents + a single character anyway. */ + pos++; + /* clear the state of the byte sequence, because + in this case effect of mbstate is undefined */ + memset (ps, 0, sizeof (mbstate_t)); + } + else + pos += tmp; + } + + return (pos - point); +} + +int +_rl_is_mbchar_matched (string, seed, end, mbchar, length) + char *string; + int seed, end; + char *mbchar; + int length; +{ + int i; + + if ((end - seed) < length) + return 0; + + for (i = 0; i < length; i++) + if (string[seed + i] != mbchar[i]) + return 0; + return 1; +} +#endif /* HANDLE_MULTIBYTE */ + +/* Find next `count' characters started byte point of the specified seed. + If flags is MB_FIND_NONZERO, we look for non-zero-width multibyte + characters. */ +#undef _rl_find_next_mbchar +int +_rl_find_next_mbchar (string, seed, count, flags) + char *string; + int seed, count, flags; +{ +#if defined (HANDLE_MULTIBYTE) + return _rl_find_next_mbchar_internal (string, seed, count, flags); +#else + return (seed + count); +#endif +} + +/* Find previous character started byte point of the specified seed. + Returned point will be point <= seed. If flags is MB_FIND_NONZERO, + we look for non-zero-width multibyte characters. */ +#undef _rl_find_prev_mbchar +int +_rl_find_prev_mbchar (string, seed, flags) + char *string; + int seed, flags; +{ +#if defined (HANDLE_MULTIBYTE) + return _rl_find_prev_mbchar_internal (string, seed, flags); +#else + return ((seed == 0) ? seed : seed - 1); +#endif +} |