mkdir rvs; mv * rvs

1 files changed, 146 insertions, 0 deletions

diff --git a/rvs/wrapper/plugin-depend.c b/rvs/wrapper/plugin-depend.c
new file mode 100644
index 0000000..de21a93
--- /dev/null
+++ b/rvs/wrapper/plugin-depend.c
@@ -0,0 +1,146 @@
+/* wrapper/plugin-depend.c -- load a command dependancy tree
+   system depends: <string.h> <error.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.
+*/
+
+#include <string.h>
+#include <error.h>
+
+#include "rvs.h"
+#include "plugin-find.h"
+
+#include "plugin-depend.h"
+
+/* translates a string in format `plugin/command' into a pointer to the command
+   DON'T plan on using the string again, it will be mutilated!
+    (so we go ahead and free() it and set the pointer to NULL)                */
+struct plugin_command *
+plugin_depend_parse (char **string,
+                     struct plugin *plugins,
+                     struct plugin_command *root)
+{
+	struct plugin_command *command=NULL;
+	
+	if (*string==NULL)
+		command=root;
+	else {
+		/* *string is in the format `plugin/command' */
+		/* char *del=delimeter */
+		char *del=strchr(*string,'/');
+		del[0]='\0';
+		/*  *string =  PLUGIN_NAME */
+		/*  &del[1] = COMMAND_NAME */
+		struct plugin *plugin;
+		plugin =plugin_find_plugin(plugins,                  *string );
+		if (plugin==NULL)
+			error(EXIT_FAILURE,0,"cannot find plugin `%s'",*string);
+		command=plugin_find_plugin_command(plugin->commands, &del[1] );
+		if (command==NULL)
+			error(EXIT_FAILURE,0,
+				"plugin `%s' does not contain command `%s'",
+				*string,&del[1]);
+		xfree(*string);
+		*string=NULL;
+	}
+	return command;
+}
+
+/* used by plugin_depend_add */
+void
+_plugin_depend_add (struct plugin_command *prev,
+                    struct plugin_command *next)
+{
+	if (prev->d_next==NULL) {
+	    prev->d_next=next;
+	} else {
+		_plugin_depend_add(prev->d_next,next);
+	}
+}
+
+/* plugin_depend_add(depend,depender) */
+void
+plugin_depend_add (struct plugin_command *depend,
+                   struct plugin_command *depender)
+{
+	if (depend->d_child==NULL) {
+	    depend->d_child=depender;
+	} else {
+		_plugin_depend_add(depend->d_child,depender);
+	}
+}
+
+/* take care of depends for `command' */
+void
+plugin_depend_command (struct plugin_command *command,
+                       struct plugin *plugins,
+                       struct plugin_command *root, int ind)
+{
+	if (command!=NULL) {
+		if (command->depend == NULL) {
+			/* the depend still needs to be parsed */
+			command->depend=plugin_depend_parse(
+				&(command->depends),plugins,root);
+		}
+		plugin_depend_add(command->depend,command);
+	}
+}
+
+/* take care of commands for a `plugin', and those after it (linked list) */
+void
+plugin_depend_plugin_all (struct plugin *plugin,
+                          struct plugin *plugins,
+                          struct plugin_command *root)
+{
+	plugin_depend_command(plugin->commands,plugins,root,0);
+	if (plugin->next != NULL) {
+		plugin_depend_plugin_all(plugin->next,plugins,root);
+	}
+}
+
+/* take care of all depends */
+struct plugin_command *
+plugin_depend_all (struct plugin *plugins)
+{
+	struct plugin_command *root=plugin_mk_command();
+	
+	plugin_depend_plugin_all(plugins,plugins,root);
+	return root;
+}
+
+void
+_plugin_depend_list (struct plugin_command_list *commands,
+                     struct plugin *plugins,
+                     struct plugin_command *root,int ind)
+{
+	if (commands!=NULL) {
+		plugin_depend_command(commands->command,plugins,root,ind++);
+		_plugin_depend_list(commands->next,plugins,root,ind++);
+	}
+}
+
+struct plugin_command *
+plugin_depend_list (struct plugin_command_list *commands,
+                    struct plugin *plugins)
+{
+	struct plugin_command *root=plugin_mk_command();
+	_plugin_depend_list(commands,plugins,root,0);
+	return root;
+}
+