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 /** Push a service via the parser.
  48 */
  49
  50 valerie_response valerie_parser_push( valerie_parser parser, char *command, mlt_service service )
  51 {
  52         return parser->push( parser->real, command, service );
  53 }
  54
  55 /** Execute a formatted command via the parser.
  56 */
  57
  58 valerie_response valerie_parser_executef( valerie_parser parser, char *format, ... )
  59 {
  60         char *command = malloc( 10240 );
  61         valerie_response response = NULL;
  62         if ( command != NULL )
  63         {
  64                 va_list list;
  65                 va_start( list, format );
  66                 if ( vsnprintf( command, 10240, format, list ) != 0 )
  67                         response = valerie_parser_execute( parser, command );
  68                 va_end( list );
  69                 free( command );
  70         }
  71         return response;
  72 }
  73
  74 /** Execute the contents of a file. Note the special case valerie_response returned.
  75 */
  76
  77 valerie_response valerie_parser_run( valerie_parser parser, char *filename )
  78 {
  79         valerie_response response = valerie_response_init( );
  80         if ( response != NULL )
  81         {
  82                 FILE *file = fopen( filename, "r" );
  83                 if ( file != NULL )
  84                 {
  85                         char command[ 1024 ];
  86                         valerie_response_set_error( response, 201, "OK" );
  87                         while ( valerie_response_get_error_code( response ) == 201 && fgets( command, 1024, file ) )
  88                         {
  89                                 valerie_util_trim( valerie_util_chomp( command ) );
  90                                 if ( strcmp( command, "" ) && command[ 0 ] != '#' )
  91                                 {
  92                                         valerie_response temp = NULL;
  93                                         valerie_response_printf( response, 1024, "%s\n", command );
  94                                         temp = valerie_parser_execute( parser, command );
  95                                         if ( temp != NULL )
  96                                         {
  97                                                 int index = 0;
  98                                                 for ( index = 0; index < valerie_response_count( temp ); index ++ )
  99                                                         valerie_response_printf( response, 10240, "%s\n", valerie_response_get_line( temp, index ) );
 100                                                 valerie_response_close( temp );
 101                                         }
 102                                         else
 103                                         {
 104                                                 valerie_response_set_error( response, 500, "Batch execution failed" );
 105                                         }
 106                                 }
 107                         }
 108                         fclose( file );
 109                 }
 110                 else
 111                 {
 112                         valerie_response_set_error( response, 404, "File not found." );
 113                 }
 114         }
 115         return response;
 116 }
 117
 118 /** Get the notifier associated to the parser.
 119 */
 120
 121 valerie_notifier valerie_parser_get_notifier( valerie_parser parser )
 122 {
 123         if ( parser->notifier == NULL )
 124                 parser->notifier = valerie_notifier_init( );
 125         return parser->notifier;
 126 }
 127
 128 /** Close the parser.
 129 */
 130
 131 void valerie_parser_close( valerie_parser parser )
 132 {
 133         if ( parser != NULL )
 134         {
 135                 parser->close( parser->real );
 136                 valerie_notifier_close( parser->notifier );
 137                 free( parser );
 138         }
 139 }