1 /* Specialized functions to manipulate a set of files.
2 Copyright (C) 2007 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
18 /* written by Jim Meyering */
23 #include "hash-triple.h"
26 /* Record file, FILE, and dev/ino from *STATS, in the hash table, HT.
27 If HT is NULL, return immediately.
28 If memory allocation fails, exit immediately. */
30 record_file (Hash_table *ht, char const *file, struct stat const *stats)
37 ent = xmalloc (sizeof *ent);
38 ent->name = xstrdup (file);
39 ent->st_ino = stats->st_ino;
40 ent->st_dev = stats->st_dev;
43 struct F_triple *ent_from_table = hash_insert (ht, ent);
44 if (ent_from_table == NULL)
46 /* Insertion failed due to lack of memory. */
50 if (ent_from_table != ent)
52 /* There was alread a matching entry in the table, so ENT was
53 not inserted. Free it. */
59 /* Return true if there is an entry in hash table, HT,
60 for the file described by FILE and STATS. */
62 seen_file (Hash_table const *ht, char const *file,
63 struct stat const *stats)
65 struct F_triple new_ent;
70 new_ent.name = (char *) file;
71 new_ent.st_ino = stats->st_ino;
72 new_ent.st_dev = stats->st_dev;
74 return !!hash_lookup (ht, &new_ent);