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+/* wrapper/plugin-parse.c -- parse rvs plugin config files
+ system depends: <stdio.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.
+*/
+#ifndef FILE_plugin_parse_h_SEEN
+#define FILE_plugin_parse_h_SEEN
+
+#include <stdio.h>
+#include <error.h> /* only used in `plugin_parse_escape' for `error' */
+
+#include "rvs.h"
+#include "plugins.h"
+
+void
+plugin_parse_comment (FILE *file)
+{
+ char c;
+ while ( (c=getc(file)) != EOF ) {
+ if ( c == '\n' ) {
+ ungetc (c, file);
+ break;
+ }
+ }
+}
+
+char
+plugin_parse_escape(FILE *file)
+{
+ char c=getc(file);
+ switch (c) {
+ case 'n':
+ c = '\n';
+ case '\\':
+ case '#':
+ case ':':
+ break;
+ default:
+ error(EXIT_FAILURE,0,"syntax error");
+ break;
+ }
+ return c;
+}
+
+char *
+plugin_parse_depend (FILE *file)
+{
+ size_t nbytes = 10;
+ char *string = (char *)xmalloc(nbytes);
+ string[0]='\0';
+
+ char c[2] = " \0";
+ char *cs = (char *)&c;
+ while ( (c[0]=getc(file)) != EOF ) {
+ if (c[0] == '\n') {
+ ungetc (c[0], file);
+ break;
+ } else {
+ switch (c[0]) {
+ case '\\':
+ c[0]=plugin_parse_escape(file);
+ stradds(&nbytes,&string,cs);
+ break;
+ case '#':
+ plugin_parse_comment(file);
+ break;
+ default:
+ stradds(&nbytes,&string,cs);
+ break;
+ }
+ }
+ }
+ return string;
+}
+
+struct plugin_command *
+plugin_parse (FILE *file)
+{
+ struct plugin_command *command=plugin_mk_command();
+
+ size_t nbytes = 10;
+ char *string = (char *)xmalloc(nbytes);
+ string[0]='\0';
+
+ char c[2] = " \0";
+ char *cs = (char *)&c;
+
+ if ( (c[0]=getc(file)) == EOF )
+ return NULL;
+ else
+ ungetc (c[0], file);
+
+ while ( (c[0]=getc(file)) != EOF ) {
+ if (c[0] == '\n') {
+ if (strlen(string)==0) {
+ xfree(command);
+ xfree(string);
+ command=plugin_parse(file);
+ } else {
+ command->name=string;
+ command->next=plugin_parse(file);
+ }
+ break;
+ } else {
+ switch (c[0]) {
+ case '\\':
+ c[0]=plugin_parse_escape(file);
+ stradds(&nbytes,&string,cs);
+ break;
+ case '#':
+ plugin_parse_comment(file);
+ break;
+ case ':':
+ command->depends=plugin_parse_depend(
+ file);
+ break;
+ default:
+ stradds(&nbytes,&string,cs);
+ break;
+ }
+ }
+ }
+ return command;
+}
+
+#endif
+