research.m1stereo.tv/gitweb/ - melted/blob - src/valerie/valerie_parser.c

   1 /*
   2  * valerie_parser.c -- Valerie Parser for Miracle
   3  * Copyright (C) 2002-2003 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 /* System header files */
  22 #include <stdio.h>
  23 #include <stdarg.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 /* Application header files */
  28 #include "valerie_parser.h"
  29 #include "valerie_util.h"
  30
  31 /** Connect to the parser.
  32 */
  33
  34 valerie_response valerie_parser_connect( valerie_parser parser )
  35 {
  36         return parser->connect( parser->real );
  37 }
  38
  39 /** Execute a command via the parser.
  40 */
  41
  42 valerie_response valerie_parser_execute( valerie_parser parser, char *command )
  43 {
  44         return parser->execute( parser->real, command );
  45 }
  46
  47 /** Execute a formatted command via the parser.
  48 */
  49
  50 valerie_response valerie_parser_executef( valerie_parser parser, char *format, ... )
  51 {
  52         char *command = malloc( 10240 );
  53         valerie_response response = NULL;
  54         if ( command != NULL )
  55         {
  56                 va_list list;
  57                 va_start( list, format );
  58                 if ( vsnprintf( command, 10240, format, list ) != 0 )
  59                         response = valerie_parser_execute( parser, command );
  60                 va_end( list );
  61                 free( command );
  62         }
  63         return response;
  64 }
  65
  66 /** Execute the contents of a file. Note the special case valerie_response returned.
  67 */
  68
  69 valerie_response valerie_parser_run( valerie_parser parser, char *filename )
  70 {
  71         valerie_response response = valerie_response_init( );
  72         if ( response != NULL )
  73         {
  74                 FILE *file = fopen( filename, "r" );
  75                 if ( file != NULL )
  76                 {
  77                         char command[ 1024 ];
  78                         valerie_response_set_error( response, 201, "OK" );
  79                         while ( valerie_response_get_error_code( response ) == 201 && fgets( command, 1024, file ) )
  80                         {
  81                                 valerie_util_trim( valerie_util_chomp( command ) );
  82                                 if ( strcmp( command, "" ) && command[ 0 ] != '#' )
  83                                 {
  84                                         valerie_response temp = NULL;
  85                                         valerie_response_printf( response, 1024, "%s\n", command );
  86                                         temp = valerie_parser_execute( parser, command );
  87                                         if ( temp != NULL )
  88                                         {
  89                                                 int index = 0;
  90                                                 for ( index = 0; index < valerie_response_count( temp ); index ++ )
  91                                                         valerie_response_printf( response, 10240, "%s\n", valerie_response_get_line( temp, index ) );
  92                                                 valerie_response_close( temp );
  93                                         }
  94                                         else
  95                                         {
  96                                                 valerie_response_set_error( response, 500, "Batch execution failed" );
  97                                         }
  98                                 }
  99                         }
 100                         fclose( file );
 101                 }
 102                 else
 103                 {
 104                         valerie_response_set_error( response, 404, "File not found." );
 105                 }
 106         }
 107         return response;
 108 }
 109
 110 /** Get the notifier associated to the parser.
 111 */
 112
 113 valerie_notifier valerie_parser_get_notifier( valerie_parser parser )
 114 {
 115         if ( parser->notifier == NULL )
 116                 parser->notifier = valerie_notifier_init( );
 117         return parser->notifier;
 118 }
 119
 120 /** Close the parser.
 121 */
 122
 123 void valerie_parser_close( valerie_parser parser )
 124 {
 125         if ( parser != NULL )
 126         {
 127                 parser->close( parser->real );
 128                 valerie_notifier_close( parser->notifier );
 129                 free( parser );
 130         }
 131 }