From 67d3b5846d84d4a2e5a31d4e268bc9d51495d7e0 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <LukeShu@sbcglobal.net>
Date: Thu, 3 Sep 2009 19:38:20 -0400
Subject: the C implementation properly loads the plugins, then creates a
 dependancy tree

---
 c/plugin-parse.c | 135 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 c/plugin-parse.c

(limited to 'c/plugin-parse.c')

diff --git a/c/plugin-parse.c b/c/plugin-parse.c
new file mode 100644
index 0000000..c333193
--- /dev/null
+++ b/c/plugin-parse.c
@@ -0,0 +1,135 @@
+/* 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.
+*/
+
+
+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 (struct plugin *plugin, FILE *file)
+{
+	struct plugin_command *command;
+	command=(struct plugin_command *)xmalloc(sizeof(*command));
+	
+	command->plugin=plugin;
+	command->p_next=NULL;
+	
+	command->depend=NULL;
+	command->depends=NULL;
+	command->child=NULL;
+	command->d_next=NULL;
+	
+	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 (strcmp(string,"")==0) {
+				xfree(command);
+				xfree(string);
+				command=_plugin_parse(plugin, file);
+			} else {
+				command->name=string;
+				command->p_next=_plugin_parse(plugin, 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;
+}
+
-- 
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