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/* wrapper/plugin-find.h -- search functions for rvs plugins
system depends: <string.h>
Copyright (C) 2009 Luke Shumaker
This file is part of rvs.
rvs is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your
option) any later version.
rvs 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with rvs; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef FILE_plugin_find_h_SEEN
#define FILE_plugin_find_h_SEEN
#include <string.h> /* only uses `strcmp' */
#include "rvs.h"
#include "plugins.h"
/*------------------------------struct------------------------------*/
/* a linked list of commands, for use by `plugin_find_commands' */
struct plugin_command_list
{
struct plugin_command *command;
struct plugin_command_list *next;
};
/*-----------------------------function-----------------------------*/
/* returns first plugin with `name' (duplicates are... unwise) */
struct plugin *
plugin_find_plugin(struct plugin *node, char *name)
{
if (node==NULL)
return node;
else {
if (strcmp(node->name,name) == 0)
return node;
else
return plugin_find_plugin(node->next,name);
}
}
/* returns plugin `name within plugin `node' */
struct plugin_command *
plugin_find_plugin_command(struct plugin_command *node, char *name)
{
if (node==NULL)
return node;
else {
if (strcmp(node->name,name) == 0)
return node;
else
return plugin_find_plugin_command(node->next,name);
}
}
/* returns the first command with `name' it finds */
struct plugin_command *
plugin_find_command(struct plugin *plugin, char *name)
{
if (plugin==NULL)
return NULL;
else {
struct plugin_command *ret;
ret=plugin_find_plugin_command(plugin->commands,name);
if (ret == NULL)
ret=plugin_find_command(plugin->next,name);
return ret;
}
}
/* returns a linked list of all commands with `name' it finds */
struct plugin_command_list *
plugin_find_commands(struct plugin *plugin, char *name)
{
if (plugin==NULL)
return NULL;
else {
struct plugin_command_list *command;
command=xmalloc( sizeof *command );
command->command=plugin_find_command(plugin,name);
command->next=plugin_find_commands(plugin->next,name);
return command;
}
}
void
plugin_free_list(struct plugin_command_list *node)
{
if (node!=NULL) {
plugin_free_list(node->next);
xfree(node);
}
}
#endif
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