mirror of https://gitee.com/openkylin/wget.git
75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
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/* Specialized functions to manipulate a set of files.
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Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* written by Jim Meyering */
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#include <config.h>
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#include "file-set.h"
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#include "hash-triple.h"
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#include "xalloc.h"
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/* Record file, FILE, and dev/ino from *STATS, in the hash table, HT.
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If HT is NULL, return immediately.
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If memory allocation fails, exit immediately. */
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void
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record_file (Hash_table *ht, char const *file, struct stat const *stats)
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{
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struct F_triple *ent;
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if (ht == NULL)
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return;
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ent = xmalloc (sizeof *ent);
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ent->name = xstrdup (file);
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ent->st_ino = stats->st_ino;
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ent->st_dev = stats->st_dev;
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{
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struct F_triple *ent_from_table = hash_insert (ht, ent);
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if (ent_from_table == NULL)
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{
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/* Insertion failed due to lack of memory. */
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xalloc_die ();
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}
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if (ent_from_table != ent)
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{
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/* There was already a matching entry in the table, so ENT was
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not inserted. Free it. */
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triple_free (ent);
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}
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}
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}
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/* Return true if there is an entry in hash table, HT,
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for the file described by FILE and STATS. */
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bool
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seen_file (Hash_table const *ht, char const *file,
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struct stat const *stats)
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{
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struct F_triple new_ent;
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if (ht == NULL)
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return false;
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new_ent.name = (char *) file;
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new_ent.st_ino = stats->st_ino;
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new_ent.st_dev = stats->st_dev;
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return !!hash_lookup (ht, &new_ent);
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}
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