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-rw-r--r--glib-1.2.10/gcompletion.c288
1 files changed, 288 insertions, 0 deletions
diff --git a/glib-1.2.10/gcompletion.c b/glib-1.2.10/gcompletion.c
new file mode 100644
index 0000000..9bc4c9b
--- /dev/null
+++ b/glib-1.2.10/gcompletion.c
@@ -0,0 +1,288 @@
+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * 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.
+ */
+
+/*
+ * Modified by the GLib Team and others 1997-1999. See the AUTHORS
+ * file for a list of people on the GLib Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GLib at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+/*
+ * MT safe
+ */
+
+#include "glib.h"
+#include <string.h>
+
+static void completion_check_cache (GCompletion* cmp,
+ gchar** new_prefix);
+
+GCompletion*
+g_completion_new (GCompletionFunc func)
+{
+ GCompletion* gcomp;
+
+ gcomp = g_new (GCompletion, 1);
+ gcomp->items = NULL;
+ gcomp->cache = NULL;
+ gcomp->prefix = NULL;
+ gcomp->func = func;
+
+ return gcomp;
+}
+
+void
+g_completion_add_items (GCompletion* cmp,
+ GList* items)
+{
+ GList* it;
+
+ g_return_if_fail (cmp != NULL);
+ g_return_if_fail (items != NULL);
+
+ /* optimize adding to cache? */
+ if (cmp->cache)
+ {
+ g_list_free (cmp->cache);
+ cmp->cache = NULL;
+ }
+
+ if (cmp->prefix)
+ {
+ g_free (cmp->prefix);
+ cmp->prefix = NULL;
+ }
+
+ it = items;
+ while (it)
+ {
+ cmp->items = g_list_prepend (cmp->items, it->data);
+ it = it->next;
+ }
+}
+
+void
+g_completion_remove_items (GCompletion* cmp,
+ GList* items)
+{
+ GList* it;
+
+ g_return_if_fail (cmp != NULL);
+ g_return_if_fail (items != NULL);
+
+ it = items;
+ while (cmp->items && it)
+ {
+ cmp->items = g_list_remove (cmp->items, it->data);
+ it = it->next;
+ }
+
+ it = items;
+ while (cmp->cache && it)
+ {
+ cmp->cache = g_list_remove(cmp->cache, it->data);
+ it = it->next;
+ }
+}
+
+void
+g_completion_clear_items (GCompletion* cmp)
+{
+ g_return_if_fail (cmp != NULL);
+
+ g_list_free (cmp->items);
+ cmp->items = NULL;
+ g_list_free (cmp->cache);
+ cmp->cache = NULL;
+ g_free (cmp->prefix);
+ cmp->prefix = NULL;
+}
+
+static void
+completion_check_cache (GCompletion* cmp,
+ gchar** new_prefix)
+{
+ register GList* list;
+ register gint len;
+ register gint i;
+ register gint plen;
+ gchar* postfix;
+ gchar* s;
+
+ if (!new_prefix)
+ return;
+ if (!cmp->cache)
+ {
+ *new_prefix = NULL;
+ return;
+ }
+
+ len = strlen(cmp->prefix);
+ list = cmp->cache;
+ s = cmp->func ? cmp->func (list->data) : (gchar*) list->data;
+ postfix = s + len;
+ plen = strlen (postfix);
+ list = list->next;
+
+ while (list && plen)
+ {
+ s = cmp->func ? cmp->func (list->data) : (gchar*) list->data;
+ s += len;
+ for (i = 0; i < plen; ++i)
+ {
+ if (postfix[i] != s[i])
+ break;
+ }
+ plen = i;
+ list = list->next;
+ }
+
+ *new_prefix = g_new0 (gchar, len + plen + 1);
+ strncpy (*new_prefix, cmp->prefix, len);
+ strncpy (*new_prefix + len, postfix, plen);
+}
+
+GList*
+g_completion_complete (GCompletion* cmp,
+ gchar* prefix,
+ gchar** new_prefix)
+{
+ gint plen, len;
+ gint done = 0;
+ GList* list;
+
+ g_return_val_if_fail (cmp != NULL, NULL);
+ g_return_val_if_fail (prefix != NULL, NULL);
+
+ len = strlen (prefix);
+ if (cmp->prefix && cmp->cache)
+ {
+ plen = strlen (cmp->prefix);
+ if (plen <= len && !strncmp (prefix, cmp->prefix, plen))
+ {
+ /* use the cache */
+ list = cmp->cache;
+ while (list)
+ {
+ if (strncmp (prefix,
+ cmp->func ? cmp->func (list->data) : (gchar*) list->data,
+ len))
+ {
+ list = g_list_remove_link (cmp->cache, list);
+ if (list != cmp->cache)
+ cmp->cache = list;
+ }
+ else
+ list = list->next;
+ }
+ done = 1;
+ }
+ }
+
+ if (!done)
+ {
+ /* normal code */
+ g_list_free (cmp->cache);
+ cmp->cache = NULL;
+ list = cmp->items;
+ while (*prefix && list)
+ {
+ if (!strncmp (prefix,
+ cmp->func ? cmp->func (list->data) : (gchar*) list->data,
+ len))
+ cmp->cache = g_list_prepend (cmp->cache, list->data);
+ list = list->next;
+ }
+ }
+ if (cmp->prefix)
+ {
+ g_free (cmp->prefix);
+ cmp->prefix = NULL;
+ }
+ if (cmp->cache)
+ cmp->prefix = g_strdup (prefix);
+ completion_check_cache (cmp, new_prefix);
+
+ return *prefix ? cmp->cache : cmp->items;
+}
+
+void
+g_completion_free (GCompletion* cmp)
+{
+ g_return_if_fail (cmp != NULL);
+
+ g_completion_clear_items (cmp);
+ g_free (cmp);
+}
+
+#ifdef TEST_COMPLETION
+#include <stdio.h>
+int
+main (int argc,
+ char* argv[])
+{
+ FILE *file;
+ gchar buf[1024];
+ GList *list;
+ GList *result;
+ GList *tmp;
+ GCompletion *cmp;
+ gint i;
+ gchar *longp = NULL;
+
+ if (argc < 3)
+ {
+ g_warning ("Usage: %s filename prefix1 [prefix2 ...]\n", argv[0]);
+ return 1;
+ }
+
+ file = fopen (argv[1], "r");
+ if (!file)
+ {
+ g_warning ("Cannot open %s\n", argv[1]);
+ return 1;
+ }
+
+ cmp = g_completion_new (NULL);
+ list = g_list_alloc ();
+ while (fgets (buf, 1024, file))
+ {
+ list->data = g_strdup (buf);
+ g_completion_add_items (cmp, list);
+ }
+ fclose (file);
+
+ for (i = 2; i < argc; ++i)
+ {
+ printf ("COMPLETING: %s\n", argv[i]);
+ result = g_completion_complete (cmp, argv[i], &longp);
+ g_list_foreach (result, (GFunc) printf, NULL);
+ printf ("LONG MATCH: %s\n", longp);
+ g_free (longp);
+ longp = NULL;
+ }
+
+ g_list_foreach (cmp->items, (GFunc) g_free, NULL);
+ g_completion_free (cmp);
+ g_list_free (list);
+
+ return 0;
+}
+#endif
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