2 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999-2001 Hiroyuki Yamamoto
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 #include "stringtable.h"
26 /* alfons - hashed string table (I wasn't content with GStringChunk;
27 * can't recall why :-) */
32 typedef struct StringEntry_ {
37 static StringEntry *string_entry_new(const gchar *str)
41 entry = g_new0(StringEntry, 1);
43 entry->string = g_strdup(str);
47 static void string_entry_free(StringEntry *entry)
49 g_return_if_fail(entry != NULL);
50 g_return_if_fail(entry->string);
52 g_free(entry->string);
56 StringTable *string_table_new(void)
58 StringTable *strtable;
60 strtable = g_new0(StringTable, 1);
61 g_return_val_if_fail(strtable != NULL, NULL);
62 strtable->hash_table = g_hash_table_new(g_str_hash, g_str_equal);
63 g_return_val_if_fail(strtable->hash_table, NULL);
67 gchar *string_table_lookup_string(StringTable *table, gchar *str)
69 StringEntry *entry = g_hash_table_lookup(table->hash_table,
78 gchar *string_table_insert_string(StringTable *table, gchar *str)
81 StringEntry *entry = NULL;
83 if (g_hash_table_lookup_extended
84 (table->hash_table, str, (gpointer *)&key, (gpointer *)&entry)) {
86 XXX_DEBUG ("ref++ for %s (%d)\n", entry->string, entry->ref_count);
88 entry = string_entry_new(str);
89 XXX_DEBUG ("inserting %s\n", str);
90 /* insert entry->string instead of str, since it can be
91 * invalid pointer after this. */
92 g_hash_table_insert(table->hash_table, entry->string, entry);
98 void string_table_free_string(StringTable *table, gchar *str)
102 entry = g_hash_table_lookup(table->hash_table, str);
106 if (entry->ref_count <= 0) {
107 XXX_DEBUG ("refcount of string %s dropped to zero\n", entry->string);
108 g_hash_table_remove(table->hash_table, str);
109 g_free(entry->string);
112 XXX_DEBUG ("ref-- for %s (%d)\n", entry->string, entry->ref_count);
117 static gboolean string_table_remove_for_each_fn(gchar *key, StringEntry *entry,
120 g_return_val_if_fail(key != NULL, TRUE);
121 g_return_val_if_fail(entry != NULL, TRUE);
123 g_free(entry->string);
129 void string_table_free(StringTable *table)
131 g_return_if_fail(table != NULL);
132 g_return_if_fail(table->hash_table != NULL);
134 g_hash_table_foreach_remove(table->hash_table,
135 (GHRFunc)string_table_remove_for_each_fn,
137 g_hash_table_destroy(table->hash_table);
141 static void string_table_stats_for_each_fn(gchar *key, StringEntry *entry,
144 if (entry->ref_count > 1) {
145 *totals += strlen(key) * (entry->ref_count - 1);
149 void string_table_get_stats(StringTable *table)
153 g_hash_table_foreach(table->hash_table,
154 (GHFunc)string_table_stats_for_each_fn, &totals);
155 XXX_DEBUG ("TOTAL UNSPILLED %d (%dK)\n", totals, totals / 1024);