include/vlc_xml.h

   1 /*****************************************************************************
   2  * vlc_xml.h: XML abstraction layer
   3  *****************************************************************************
   4  * Copyright (C) 2004-2010 VLC authors and VideoLAN
   5  *
   6  * Author: Gildas Bazin <gbazin@videolan.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU Lesser General Public License as published by
  10  * the Free Software Foundation; either version 2.1 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public License
  19  * along with this program; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 #ifndef VLC_XML_H
  24 #define VLC_XML_H
  25
  26 /**
  27 * \file
  28 * This file defines functions and structures to handle xml tags in vlc
  29 *
  30 */
  31
  32 # ifdef __cplusplus
  33 extern "C" {
  34 # endif
  35
  36 struct xml_t
  37 {
  38     struct vlc_common_members obj;
  39
  40     /* Module properties */
  41     module_t  *p_module;
  42     void      *p_sys;
  43
  44     void (*pf_catalog_load) ( xml_t *, const char * );
  45     void (*pf_catalog_add) ( xml_t *, const char *, const char *,
  46                             const char * );
  47 };
  48
  49 VLC_API xml_t * xml_Create( vlc_object_t * ) VLC_USED;
  50 #define xml_Create( a ) xml_Create( VLC_OBJECT(a) )
  51 VLC_API void xml_Delete( xml_t * );
  52
  53 static inline void xml_CatalogLoad( xml_t *xml, const char *catalog )
  54 {
  55     xml->pf_catalog_load( xml, catalog );
  56 }
  57
  58 static inline void xml_CatalogAdd( xml_t *xml, const char *type,
  59                                    const char *orig, const char *value )
  60 {
  61     xml->pf_catalog_add( xml, type, orig, value );
  62 }
  63
  64
  65 struct xml_reader_t
  66 {
  67     struct vlc_common_members obj;
  68
  69     void     *p_sys;
  70     stream_t *p_stream;
  71     module_t *p_module;
  72
  73     int (*pf_next_node) ( xml_reader_t *, const char ** );
  74     const char *(*pf_next_attr) ( xml_reader_t *, const char ** );
  75
  76     int (*pf_use_dtd) ( xml_reader_t * );
  77     int (*pf_is_empty) ( xml_reader_t * );
  78 };
  79
  80 VLC_API xml_reader_t * xml_ReaderCreate(vlc_object_t *, stream_t *) VLC_USED;
  81 #define xml_ReaderCreate( a, s ) xml_ReaderCreate(VLC_OBJECT(a), s)
  82 VLC_API void xml_ReaderDelete(xml_reader_t *);
  83
  84 static inline int xml_ReaderNextNode( xml_reader_t *reader, const char **pval )
  85 {
  86     return reader->pf_next_node( reader, pval );
  87 }
  88
  89 static inline const char *xml_ReaderNextAttr( xml_reader_t *reader,
  90                                               const char **pval )
  91 {
  92   return reader->pf_next_attr( reader, pval );
  93 }
  94
  95 static inline int xml_ReaderUseDTD( xml_reader_t *reader )
  96 {
  97   return reader->pf_use_dtd( reader );
  98 }
  99
 100 static inline int xml_ReaderIsEmptyElement( xml_reader_t *reader )
 101 {
 102     if(reader->pf_is_empty == NULL)
 103         return -2;
 104
 105     return reader->pf_is_empty( reader );
 106 }
 107
 108 enum {
 109     XML_READER_ERROR=-1,
 110     XML_READER_NONE=0,
 111     XML_READER_STARTELEM,
 112     XML_READER_ENDELEM,
 113     XML_READER_TEXT,
 114 };
 115
 116 # ifdef __cplusplus
 117 }
 118 # endif
 119
 120 #endif