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Diffstat (limited to 'gcc-4.7/libiberty/lrealpath.c')
| -rw-r--r-- | gcc-4.7/libiberty/lrealpath.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/gcc-4.7/libiberty/lrealpath.c b/gcc-4.7/libiberty/lrealpath.c deleted file mode 100644 index b27c8de99..000000000 --- a/gcc-4.7/libiberty/lrealpath.c +++ /dev/null @@ -1,157 +0,0 @@ -/* Libiberty realpath. Like realpath, but more consistent behavior. - Based on gdb_realpath from GDB. - - Copyright 2003 Free Software Foundation, Inc. - - This file is part of the libiberty library. - - 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 2 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, write to the Free Software - Foundation, Inc., 51 Franklin Street - Fifth Floor, - Boston, MA 02110-1301, USA. */ - -/* - -@deftypefn Replacement {const char*} lrealpath (const char *@var{name}) - -Given a pointer to a string containing a pathname, returns a canonical -version of the filename. Symlinks will be resolved, and ``.'' and ``..'' -components will be simplified. The returned value will be allocated using -@code{malloc}, or @code{NULL} will be returned on a memory allocation error. - -@end deftypefn - -*/ - -#include "config.h" -#include "ansidecl.h" -#include "libiberty.h" - -#ifdef HAVE_LIMITS_H -#include <limits.h> -#endif -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif -#ifdef HAVE_STRING_H -#include <string.h> -#endif - -/* On GNU libc systems the declaration is only visible with _GNU_SOURCE. */ -#if defined(HAVE_CANONICALIZE_FILE_NAME) \ - && defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME) -extern char *canonicalize_file_name (const char *); -#endif - -#if defined(HAVE_REALPATH) -# if defined (PATH_MAX) -# define REALPATH_LIMIT PATH_MAX -# else -# if defined (MAXPATHLEN) -# define REALPATH_LIMIT MAXPATHLEN -# endif -# endif -#else - /* cygwin has realpath, so it won't get here. */ -# if defined (_WIN32) -# define WIN32_LEAN_AND_MEAN -# include <windows.h> /* for GetFullPathName */ -# endif -#endif - -char * -lrealpath (const char *filename) -{ - /* Method 1: The system has a compile time upper bound on a filename - path. Use that and realpath() to canonicalize the name. This is - the most common case. Note that, if there isn't a compile time - upper bound, you want to avoid realpath() at all costs. */ -#if defined(REALPATH_LIMIT) - { - char buf[REALPATH_LIMIT]; - const char *rp = realpath (filename, buf); - if (rp == NULL) - rp = filename; - return strdup (rp); - } -#endif /* REALPATH_LIMIT */ - - /* Method 2: The host system (i.e., GNU) has the function - canonicalize_file_name() which malloc's a chunk of memory and - returns that, use that. */ -#if defined(HAVE_CANONICALIZE_FILE_NAME) - { - char *rp = canonicalize_file_name (filename); - if (rp == NULL) - return strdup (filename); - else - return rp; - } -#endif - - /* Method 3: Now we're getting desperate! The system doesn't have a - compile time buffer size and no alternative function. Query the - OS, using pathconf(), for the buffer limit. Care is needed - though, some systems do not limit PATH_MAX (return -1 for - pathconf()) making it impossible to pass a correctly sized buffer - to realpath() (it could always overflow). On those systems, we - skip this. */ -#if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) - { - /* Find out the max path size. */ - long path_max = pathconf ("/", _PC_PATH_MAX); - if (path_max > 0) - { - /* PATH_MAX is bounded. */ - char *buf, *rp, *ret; - buf = (char *) malloc (path_max); - if (buf == NULL) - return NULL; - rp = realpath (filename, buf); - ret = strdup (rp ? rp : filename); - free (buf); - return ret; - } - } -#endif - - /* The MS Windows method. If we don't have realpath, we assume we - don't have symlinks and just canonicalize to a Windows absolute - path. GetFullPath converts ../ and ./ in relative paths to - absolute paths, filling in current drive if one is not given - or using the current directory of a specified drive (eg, "E:foo"). - It also converts all forward slashes to back slashes. */ -#if defined (_WIN32) - { - char buf[MAX_PATH]; - char* basename; - DWORD len = GetFullPathName (filename, MAX_PATH, buf, &basename); - if (len == 0 || len > MAX_PATH - 1) - return strdup (filename); - else - { - /* The file system is case-preserving but case-insensitive, - Canonicalize to lowercase, using the codepage associated - with the process locale. */ - CharLowerBuff (buf, len); - return strdup (buf); - } - } -#endif - - /* This system is a lost cause, just duplicate the filename. */ - return strdup (filename); -} |