/* dir.c: directory operations. Copyright (C) 1992, 93, 94, 95 Free Software Foundation, Inc. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #include /* Return true if FN is a directory or a symlink to a directory, false if not. */ boolean dir_p P1C(const_string, fn) { #ifdef WIN32 int fa = GetFileAttributes(fn); return (fa != 0xFFFFFFFF && (fa & FILE_ATTRIBUTE_DIRECTORY)); #else struct stat stats; return stat (fn, &stats) == 0 && S_ISDIR (stats.st_mode); #endif } #ifndef WIN32 /* Return -1 if FN isn't a directory, else its number of links. Duplicate the call to stat; no need to incur overhead of a function call for that little bit of cleanliness. */ int dir_links P1C(const_string, fn) { static hash_table_type link_table; string *hash_ret; long ret; if (link_table.size == 0) link_table = hash_create (457); #ifdef KPSE_DEBUG /* This is annoying, but since we're storing integers as pointers, we can't print them as strings. */ if (KPSE_DEBUG_P (KPSE_DEBUG_HASH)) kpse_debug_hash_lookup_int = true; #endif hash_ret = hash_lookup (link_table, fn); #ifdef KPSE_DEBUG if (KPSE_DEBUG_P (KPSE_DEBUG_HASH)) kpse_debug_hash_lookup_int = false; #endif /* Have to cast the int we need to/from the const_string that the hash table stores for values. Let's hope an int fits in a pointer. */ if (hash_ret) ret = (long) *hash_ret; else { struct stat stats; ret = stat (fn, &stats) == 0 && S_ISDIR (stats.st_mode) ? stats.st_nlink : -1; /* It's up to us to copy the value. */ hash_insert (&link_table, xstrdup (fn), (const_string) ret); #ifdef KPSE_DEBUG if (KPSE_DEBUG_P (KPSE_DEBUG_STAT)) DEBUGF2 ("dir_links(%s) => %ld\n", fn, ret); #endif } return ret; } #endif /* !WIN32 */