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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";
while ( (c[0]=getc(file)) != EOF ) {
switch (c[0]) {
case '\n':
ungetc (c[0], file);
return string;
break;
case '#':
plugin_parse_comment(file);
break;
case '\\':
c[0]=plugin_parse_escape(file);
default:
stradds(&nbytes,&string,(char *)&c);
break;
}
}
return string;
}
struct plugin_command *
plugin_parse (FILE *file)
{
struct plugin_command *command=plugin_mk_command();
size_t nbytes = 10;
command->name = (char *)xmalloc(nbytes);
command->name[0]='\0';
char c[2] = " \0";
c[0]=getc(file);
if (c[0]==EOF) return NULL;
else ungetc (c[0], file);
while ( (c[0]=getc(file)) != EOF ) {
switch (c[0]) {
case '\n':
if (strlen(command->name)==0) {
plugin_free_command(command);
command=plugin_parse(file);
} else
command->next=plugin_parse(file);
break;
case ':':
command->depends=plugin_parse_depend(file);
break;
case '#':
plugin_parse_comment(file);
break;
case '\\':
c[0]=plugin_parse_escape(file);
default:
stradds(&nbytes,&(command->name),(char *)&c);
break;
}
}
return command;
}
#endif
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