X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=lib%2Fdirname.c;fp=lib%2Fdirname.c;h=0000000000000000000000000000000000000000;hb=3322ff6164a1e9dd3d1622c64a9b9b7c5f303ef6;hp=c27e5b5d8b3bf42dc5dc050ee3f029f421949235;hpb=d73c4937b8f7712f6eb78774fa9711b701b419fd;p=tar diff --git a/lib/dirname.c b/lib/dirname.c deleted file mode 100644 index c27e5b5..0000000 --- a/lib/dirname.c +++ /dev/null @@ -1,84 +0,0 @@ -/* dirname.c -- return all but the last element in a file name - - Copyright (C) 1990, 1998, 2000, 2001, 2003, 2004, 2005, 2006 Free Software - Foundation, Inc. - - 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 - -#include "dirname.h" - -#include -#include "xalloc.h" - -/* Return the length of the prefix of FILE that will be used by - dir_name. If FILE is in the working directory, this returns zero - even though `dir_name (FILE)' will return ".". Works properly even - if there are trailing slashes (by effectively ignoring them). */ - -size_t -dir_len (char const *file) -{ - size_t prefix_length = FILE_SYSTEM_PREFIX_LEN (file); - size_t length; - - /* Advance prefix_length beyond important leading slashes. */ - prefix_length += (prefix_length != 0 - ? (FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE - && ISSLASH (file[prefix_length])) - : (ISSLASH (file[0]) - ? ((DOUBLE_SLASH_IS_DISTINCT_ROOT - && ISSLASH (file[1]) && ! ISSLASH (file[2]) - ? 2 : 1)) - : 0)); - - /* Strip the basename and any redundant slashes before it. */ - for (length = last_component (file) - file; - prefix_length < length; length--) - if (! ISSLASH (file[length - 1])) - break; - return length; -} - - -/* In general, we can't use the builtin `dirname' function if available, - since it has different meanings in different environments. - In some environments the builtin `dirname' modifies its argument. - - Return the leading directories part of FILE, allocated with xmalloc. - Works properly even if there are trailing slashes (by effectively - ignoring them). Unlike POSIX dirname(), FILE cannot be NULL. - - If lstat (FILE) would succeed, then { chdir (dir_name (FILE)); - lstat (base_name (FILE)); } will access the same file. Likewise, - if the sequence { chdir (dir_name (FILE)); - rename (base_name (FILE), "foo"); } succeeds, you have renamed FILE - to "foo" in the same directory FILE was in. */ - -char * -dir_name (char const *file) -{ - size_t length = dir_len (file); - bool append_dot = (length == 0 - || (FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE - && length == FILE_SYSTEM_PREFIX_LEN (file) - && file[2] != '\0' && ! ISSLASH (file[2]))); - char *dir = xmalloc (length + append_dot + 1); - memcpy (dir, file, length); - if (append_dot) - dir[length++] = '.'; - dir[length] = '\0'; - return dir; -}