X-Git-Url: https://git.gag.com/?p=debian%2Ftar;a=blobdiff_plain;f=lib%2Fbasename.c;fp=lib%2Fbasename.c;h=0000000000000000000000000000000000000000;hp=426ed40f1a9e19f37abb6be20f72d587a2fc9b8a;hb=22f1eb8bc17e5be72dd23d42d6aaa60196ac22e6;hpb=00fa13ff3f2d5b6e2a94c5e948c38616ff7ad37a diff --git a/lib/basename.c b/lib/basename.c deleted file mode 100644 index 426ed40f..00000000 --- a/lib/basename.c +++ /dev/null @@ -1,128 +0,0 @@ -/* basename.c -- return the last element in a file name - - Copyright (C) 1990, 1998, 1999, 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" -#include "xstrndup.h" - -/* Return the address of the last file name component of NAME. If - NAME has no relative file name components because it is a file - system root, return the empty string. */ - -char * -last_component (char const *name) -{ - char const *base = name + FILE_SYSTEM_PREFIX_LEN (name); - char const *p; - bool saw_slash = false; - - while (ISSLASH (*base)) - base++; - - for (p = base; *p; p++) - { - if (ISSLASH (*p)) - saw_slash = true; - else if (saw_slash) - { - base = p; - saw_slash = false; - } - } - - return (char *) base; -} - - -/* In general, we can't use the builtin `basename' function if available, - since it has different meanings in different environments. - In some environments the builtin `basename' modifies its argument. - - Return the last file name component of NAME, allocated with - xmalloc. On systems with drive letters, a leading "./" - distinguishes relative names that would otherwise look like a drive - letter. Unlike POSIX basename(), NAME cannot be NULL, - base_name("") returns "", and the first trailing slash is not - stripped. - - If lstat (NAME) would succeed, then { chdir (dir_name (NAME)); - lstat (base_name (NAME)); } will access the same file. Likewise, - if the sequence { chdir (dir_name (NAME)); - rename (base_name (NAME), "foo"); } succeeds, you have renamed NAME - to "foo" in the same directory NAME was in. */ - -char * -base_name (char const *name) -{ - char const *base = last_component (name); - size_t length; - - /* If there is no last component, then name is a file system root or the - empty string. */ - if (! *base) - return xstrndup (name, base_len (name)); - - /* Collapse a sequence of trailing slashes into one. */ - length = base_len (base); - if (ISSLASH (base[length])) - length++; - - /* On systems with drive letters, `a/b:c' must return `./b:c' rather - than `b:c' to avoid confusion with a drive letter. On systems - with pure POSIX semantics, this is not an issue. */ - if (FILE_SYSTEM_PREFIX_LEN (base)) - { - char *p = xmalloc (length + 3); - p[0] = '.'; - p[1] = '/'; - memcpy (p + 2, base, length); - p[length + 2] = '\0'; - return p; - } - - /* Finally, copy the basename. */ - return xstrndup (base, length); -} - -/* Return the length of the basename NAME. Typically NAME is the - value returned by base_name or last_component. Act like strlen - (NAME), except omit all trailing slashes. */ - -size_t -base_len (char const *name) -{ - size_t len; - size_t prefix_len = FILE_SYSTEM_PREFIX_LEN (name); - - for (len = strlen (name); 1 < len && ISSLASH (name[len - 1]); len--) - continue; - - if (DOUBLE_SLASH_IS_DISTINCT_ROOT && len == 1 - && ISSLASH (name[0]) && ISSLASH (name[1]) && ! name[2]) - return 2; - - if (FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE && prefix_len - && len == prefix_len && ISSLASH (name[prefix_len])) - return prefix_len + 1; - - return len; -}