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Tue, 19 May 1998 11:51:02 +0200 Paolo Molaro <lupus@debian.org>

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* added generic functions for completion in glib.
	* used the above functions in the gtkcombo widget.
This commit is contained in:
Paolo Molaro 1998-05-19 10:17:31 +00:00
parent abce966642
commit 4d3f6feb37
12 changed files with 320 additions and 5 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
Tue, 19 May 1998 09:03:03 +0200 Paolo Molaro <lupus@debian.org>
* gtk/gtkcombo.c: implemented completion in the entry.
1998-05-18 <sopwith@moebuis.labs.redhat.com>
* gtk/gtk{debug.h,signal.c,main.c}: Allow GTK_DEBUG=signals

4
ChangeLog.pre-2-0
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@ -1,3 +1,7 @@
Tue, 19 May 1998 09:03:03 +0200 Paolo Molaro <lupus@debian.org>
* gtk/gtkcombo.c: implemented completion in the entry.
1998-05-18 <sopwith@moebuis.labs.redhat.com>
* gtk/gtk{debug.h,signal.c,main.c}: Allow GTK_DEBUG=signals

4
ChangeLog.pre-2-10
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@ -1,3 +1,7 @@
Tue, 19 May 1998 09:03:03 +0200 Paolo Molaro <lupus@debian.org>
* gtk/gtkcombo.c: implemented completion in the entry.
1998-05-18 <sopwith@moebuis.labs.redhat.com>
* gtk/gtk{debug.h,signal.c,main.c}: Allow GTK_DEBUG=signals

4
ChangeLog.pre-2-2
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@ -1,3 +1,7 @@
Tue, 19 May 1998 09:03:03 +0200 Paolo Molaro <lupus@debian.org>
* gtk/gtkcombo.c: implemented completion in the entry.
1998-05-18 <sopwith@moebuis.labs.redhat.com>
* gtk/gtk{debug.h,signal.c,main.c}: Allow GTK_DEBUG=signals

4
ChangeLog.pre-2-4
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@ -1,3 +1,7 @@
Tue, 19 May 1998 09:03:03 +0200 Paolo Molaro <lupus@debian.org>
* gtk/gtkcombo.c: implemented completion in the entry.
1998-05-18 <sopwith@moebuis.labs.redhat.com>
* gtk/gtk{debug.h,signal.c,main.c}: Allow GTK_DEBUG=signals

4
ChangeLog.pre-2-6
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@ -1,3 +1,7 @@
Tue, 19 May 1998 09:03:03 +0200 Paolo Molaro <lupus@debian.org>
* gtk/gtkcombo.c: implemented completion in the entry.
1998-05-18 <sopwith@moebuis.labs.redhat.com>
* gtk/gtk{debug.h,signal.c,main.c}: Allow GTK_DEBUG=signals

4
ChangeLog.pre-2-8
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@ -1,3 +1,7 @@
Tue, 19 May 1998 09:03:03 +0200 Paolo Molaro <lupus@debian.org>
* gtk/gtkcombo.c: implemented completion in the entry.
1998-05-18 <sopwith@moebuis.labs.redhat.com>
* gtk/gtk{debug.h,signal.c,main.c}: Allow GTK_DEBUG=signals

4
glib/ChangeLog
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@ -1,3 +1,7 @@
Tue, 19 May 1998 09:00:02 +0200 §Paolo Molaro <lupus@debian.org>
* gcompletion.c: generic functions for com<TAB>pletion...
Sun May 17 10:48:27 1998 Tim Janik <timj@gtk.org>
* gscanner.c (g_scanner_unexp_token): provide usefull default

1
glib/Makefile.am
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@ -7,6 +7,7 @@ lib_LTLIBRARIES = libglib-1.1.la
libglib_1_1_la_SOURCES = \
garray.c \
gcache.c \
gcompletion.c \
gdataset.c \
gerror.c \
ghash.c \

238
glib/gcompletion.c Normal file
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@ -0,0 +1,238 @@
/* 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.
*/
#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;
if ( func )
gcomp->func = func;
else
gcomp->func = NULL;
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=NULL;
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;
}
if ( !(file=fopen(argv[1], "r")) ) {
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

27
glib/glib.h
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@ -1065,6 +1065,33 @@ void g_scanner_warn (GScanner *scanner,
gint g_scanner_stat_mode (const gchar *filename);
/* Completion */
typedef gchar* (*GCompletionFunc)(gpointer);
typedef struct _GCompletion GCompletion;
struct _GCompletion {
GList* items;
GCompletionFunc func;
gchar* prefix;
GList* cache;
};
GCompletion* g_completion_new (GCompletionFunc func);
void g_completion_add_items (GCompletion* cmp,
GList* items);
void g_completion_remove_items (GCompletion* cmp,
GList* items);
void g_completion_clear_items (GCompletion* cmp);
GList* g_completion_complete (GCompletion* cmp,
gchar* prefix,
gchar** new_prefix);
void g_completion_free (GCompletion* cmp);
#ifdef __cplusplus
}

27
gtk/gtkcombo.c
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@ -117,11 +117,28 @@ gtk_combo_entry_key_press (GtkEntry * entry, GdkEventKey * event, GtkCombo * com
{
GList *li;
/* completion? */
/*if ( event->keyval == GDK_Tab ) {
gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
return TRUE;
} else */
/* completion */
if ( event->keyval == GDK_Tab ) {
GCompletion * cmpl;
gchar* prefix;
gchar* nprefix = NULL;
guint pos;
gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
cmpl = g_completion_new((GCompletionFunc)gtk_combo_func);
g_completion_add_items(cmpl, GTK_LIST(combo->list)->children);
pos = GTK_EDITABLE(entry)->current_pos;
prefix = gtk_editable_get_chars(GTK_EDITABLE(entry), 0, pos);
g_completion_complete(cmpl, prefix, &nprefix);
if ( nprefix && strlen(nprefix) > strlen(prefix) ) {
gtk_editable_insert_text(GTK_EDITABLE(entry), nprefix+pos,
strlen(nprefix)-strlen(prefix), &pos);
GTK_EDITABLE(entry)->current_pos = pos;
}
g_free(prefix);
g_completion_free(cmpl);
return TRUE;
}
if (!combo->use_arrows || !GTK_LIST (combo->list)->children)
return FALSE;
li = g_list_find (GTK_LIST (combo->list)->children, gtk_combo_find (combo));