Removed. Split into glibtop-backend.h and glibtop-backend-info.h.
2000-11-26 Martin Baulig <martin@home-of-linux.org> * include/glibtop/backend.h: Removed. Split into glibtop-backend.h and glibtop-backend-info.h. * include/glibtop/glibtop-backend.h: New file. Switched glibtop_backend to a GObject. * include/glibtop/glibtop-backend-info.h: New file. * lib/backend.c, lib/init-backends.c, lib/open-backend.c: Removed. * lib/glibtop-backend.c: New file. * lib/glibtop-backend-info.c: New file.
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Martin Baulig
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Martin Baulig
Martin Baulig
parent
dfd678599f
commit
16b81f0d91
290
lib/glibtop-backend-info.c
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290
lib/glibtop-backend-info.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/* $Id$ */
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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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 LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include <glibtop.h>
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#include <glibtop/global.h>
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#include <glibtop/glibtop-backend.h>
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#include <glibtop/glibtop-backend-info.h>
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static GHashTable *_glibtop_backend_list = NULL;
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static long _glibtop_backend_nr = 0;
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#if HAVE_LIBXML
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#define LIBGTOP_XML_NAMESPACE "http://www.home-of-linux.org/libgtop/1.1"
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#include <libxml/parser.h>
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#include <dirent.h>
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static void _glibtop_init_gmodule_backends (const char *);
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#endif /* HAVE_LIBXML */
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void
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glibtop_init_backends (void)
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{
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static int backends_initialized = 0;
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if (backends_initialized)
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return;
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backends_initialized = 1;
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#if HAVE_LIBXML
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LIBXML_TEST_VERSION;
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_glibtop_init_gmodule_backends (LIBGTOP_BACKEND_DIR);
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#endif
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}
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#if HAVE_LIBXML
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static gchar *
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_get_library_filename (xmlDocPtr doc, xmlNodePtr cur, const char *directory)
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{
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char *filename = xmlNodeListGetString (doc, cur->xmlChildrenNode, 1);
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gchar *retval;
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if (!filename)
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return NULL;
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/* already absolute */
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if (filename [0] == '/')
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retval = g_strdup (filename);
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else
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retval = g_strdup_printf ("%s/%s", directory, filename);
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return retval;
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}
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static GSList *
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_parse_extra_libs (xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur, const char *dir)
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{
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GSList *list = NULL;
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/* We don't care what the top level element name is */
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cur = cur->xmlChildrenNode;
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while (cur != NULL) {
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if ((!strcmp (cur->name, "ExtraLib")) && (cur->ns == ns)) {
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xmlNodePtr sub = cur->xmlChildrenNode;
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while (sub != NULL) {
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if ((!strcmp (sub->name, "ShlibName")) && (sub->ns == ns))
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list = g_slist_append
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(list, _get_library_filename (doc, sub, dir));
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sub = sub->next;
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}
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}
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cur = cur->next;
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}
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return list;
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}
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static glibtop_backend_entry *
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_parseBackend (xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur, const char *dir)
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{
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glibtop_backend_entry *ret = NULL;
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/*
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* allocate the struct
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*/
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ret = g_new0 (glibtop_backend_entry, 1);
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/* We don't care what the top level element name is */
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cur = cur->xmlChildrenNode;
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while (cur != NULL) {
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if ((!strcmp (cur->name, "Name")) && (cur->ns == ns))
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ret->name = xmlNodeListGetString
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(doc, cur->xmlChildrenNode, 1);
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if ((!strcmp (cur->name, "Location")) && (cur->ns == ns)) {
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xmlNodePtr sub = cur->xmlChildrenNode;
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while (sub != NULL) {
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if ((!strcmp (sub->name, "LibtoolName")) && (sub->ns == ns))
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ret->libtool_name = _get_library_filename (doc, sub, dir);
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if ((!strcmp (sub->name, "ShlibName")) && (sub->ns == ns))
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ret->shlib_name = _get_library_filename (doc, sub, dir);
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if ((!strcmp (sub->name, "ExtraLibs")) && (sub->ns == ns))
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ret->extra_libs = _parse_extra_libs (doc, ns, sub, dir);
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sub = sub->next;
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}
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}
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cur = cur->next;
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}
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return ret;
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}
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static void
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_glibtop_init_gmodule_backends (const char *directory)
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{
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DIR *dir;
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struct dirent *entry;
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dir = opendir (directory);
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if (!dir) return;
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while ((entry = readdir (dir)) != NULL) {
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size_t len = strlen (entry->d_name);
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gchar *filename;
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xmlDocPtr doc;
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xmlNsPtr ns;
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xmlNodePtr cur;
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if (len < 8)
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continue;
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if (strcmp (entry->d_name+len-8, ".backend"))
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continue;
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filename = g_strdup_printf ("%s/%s", directory, entry->d_name);
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doc = xmlParseFile (filename);
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if (!doc) {
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g_warning ("Cannot parse %s", filename);
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g_free (filename);
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continue;
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}
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/* Make sure the document is of the right kind */
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cur = xmlDocGetRootElement (doc);
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if (!cur) {
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xmlFreeDoc (doc);
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g_free (filename);
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continue;
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}
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ns = xmlSearchNsByHref (doc, cur, LIBGTOP_XML_NAMESPACE);
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if (!ns) {
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g_warning ("File %s of wrong type; LibGTop Namespace not found",
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filename);
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g_free (filename);
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xmlFreeDoc (doc);
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continue;
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}
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if (strcmp (cur->name, "Backends")) {
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g_warning ("File %s of the wrong type, root node != 'Backends'",
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filename);
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g_free (filename);
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xmlFreeDoc (doc);
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continue;
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}
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cur = cur->xmlChildrenNode;
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while (cur != NULL) {
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glibtop_backend_entry *backend;
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if ((!strcmp(cur->name, "Backend")) && (cur->ns == ns)) {
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backend = _parseBackend (doc, ns, cur, directory);
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if (!backend) {
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g_warning ("File %s of wrong type; cannot parse",
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filename);
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continue;
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}
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glibtop_register_backend (backend);
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}
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cur = cur->next;
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}
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g_free (filename);
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xmlFreeDoc (doc);
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}
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closedir (dir);
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}
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#endif /* HAVE_LIBXML */
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long
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glibtop_register_backend (glibtop_backend_entry *entry)
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{
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long id;
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if (!_glibtop_backend_list)
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_glibtop_backend_list = g_hash_table_new (NULL, NULL);
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id = ++_glibtop_backend_nr;
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g_hash_table_insert (_glibtop_backend_list,
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GINT_TO_POINTER (id),
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entry);
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return id;
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}
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void
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glibtop_unregister_backend (long id)
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{
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g_hash_table_remove (_glibtop_backend_list,
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GINT_TO_POINTER (id));
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}
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glibtop_backend_entry *
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glibtop_backend_by_id (long id)
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{
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return g_hash_table_lookup (_glibtop_backend_list,
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GINT_TO_POINTER (id));
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}
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typedef struct {
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const char *backend_name;
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glibtop_backend_entry *entry;
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} _find_by_name_param_t;
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static void
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find_by_name (gpointer key, gpointer value, gpointer user_data)
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{
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_find_by_name_param_t *param = (_find_by_name_param_t *) user_data;
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glibtop_backend_entry *entry = (glibtop_backend_entry *) value;
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if (!entry || !entry->name || param->entry)
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return;
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if (!strcmp (entry->name, param->backend_name))
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param->entry = entry;
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}
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glibtop_backend_entry *
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glibtop_backend_by_name (const char *backend_name)
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{
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_find_by_name_param_t param = { backend_name, NULL };
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g_hash_table_foreach (_glibtop_backend_list,
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find_by_name, ¶m);
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return param.entry;
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}
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