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Diffstat (limited to 'wrapper/plugin-depend.c')
| -rw-r--r-- | wrapper/plugin-depend.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/wrapper/plugin-depend.c b/wrapper/plugin-depend.c new file mode 100644 index 0000000..de21a93 --- /dev/null +++ b/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; +} + |