gmarkup.h

   1 /* gmarkup.h - Simple XML-like string parser/writer
   2  *
   3  *  Copyright 2000 Red Hat, Inc.
   4  *
   5  * GLib is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU Lesser General Public License as
   7  * published by the Free Software Foundation; either version 2 of the
   8  * License, or (at your option) any later version.
   9  *
  10  * GLib is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with GLib; see the file COPYING.LIB.  If not,
  17  * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  *   Boston, MA 02111-1307, USA.
  19  */
  20
  21 #ifndef __G_MARKUP_H__
  22 #define __G_MARKUP_H__
  23
  24 #include <gerror.h>
  25
  26 #ifdef __cplusplus
  27 extern "C"
  28 {
  29 #endif
  30
  31 typedef enum
  32 {
  33   G_MARKUP_ERROR_BAD_UTF8,
  34   G_MARKUP_ERROR_EMPTY,
  35   G_MARKUP_ERROR_PARSE,
  36   /* These three are primarily intended for specific GMarkupParser
  37    * implementations to set.
  38    */
  39   G_MARKUP_ERROR_UNKNOWN_ELEMENT,
  40   G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE,
  41   G_MARKUP_ERROR_INVALID_CONTENT
  42 } GMarkupError;
  43
  44 #define G_MARKUP_ERROR g_markup_error_quark ()
  45
  46 GQuark g_markup_error_quark ();
  47
  48 typedef enum
  49 {
  50   /* Hmm, can't think of any at the moment */
  51   G_MARKUP_DO_NOT_USE_THIS_UNSUPPORTED_FLAG = 1 << 0
  52
  53 } GMarkupParseFlags;
  54
  55 typedef struct _GMarkupParseContext GMarkupParseContext;
  56 typedef struct _GMarkupParser GMarkupParser;
  57
  58 struct _GMarkupParser
  59 {
  60   /* Called for open tags <foo bar="baz"> */
  61   void (*start_element)  (GMarkupParseContext *context,
  62                           const gchar         *element_name,
  63                           const gchar        **attribute_names,
  64                           const gchar        **attribute_values,
  65                           gpointer             user_data,
  66                           GError             **error);
  67
  68   /* Called for close tags </foo> */
  69   void (*end_element)    (GMarkupParseContext *context,
  70                           const gchar         *element_name,
  71                           gpointer             user_data,
  72                           GError             **error);
  73
  74   /* Called for character data */
  75   /* text is not nul-terminated */
  76   void (*text)           (GMarkupParseContext *context,
  77                           const gchar         *text,
  78                           gint                 text_len,
  79                           gpointer             user_data,
  80                           GError             **error);
  81
  82   /* Called for strings that should be re-saved verbatim in this same
  83    * position, but are not otherwise interpretable.  At the moment
  84    * this includes comments and processing instructions.
  85    */
  86   /* text is not nul-terminated. */
  87   void (*passthrough)    (GMarkupParseContext *context,
  88                           const gchar         *passthrough_text,
  89                           gint                 text_len,
  90                           gpointer             user_data,
  91                           GError             **error);
  92
  93   /* Called on error, including one set by other
  94    * methods in the vtable. The GError should not be freed.
  95    */
  96   void (*error)          (GMarkupParseContext *context,
  97                           GError              *error,
  98                           gpointer             user_data);
  99 };
 100
 101 GMarkupParseContext *g_markup_parse_context_new   (const GMarkupParser *parser,
 102                                                    GMarkupParseFlags    flags,
 103                                                    gpointer             user_data,
 104                                                    GDestroyNotify       user_data_dnotify);
 105 void                 g_markup_parse_context_free  (GMarkupParseContext *context);
 106 gboolean             g_markup_parse_context_parse (GMarkupParseContext *context,
 107                                                    const gchar         *text,
 108                                                    gint                 text_len,
 109                                                    GError             **error);
 110
 111 gboolean             g_markup_parse_context_end_parse (GMarkupParseContext *context,
 112                                                        GError             **error);
 113
 114 /* For user-constructed error messages, has no precise semantics */
 115 void                 g_markup_parse_context_get_position (GMarkupParseContext *context,
 116                                                           gint                *line_number,
 117                                                           gint                *char_number);
 118
 119 /* useful when saving */
 120 gchar* g_markup_escape_text (const gchar *text,
 121                              gint         length);
 122
 123
 124 #ifdef __cplusplus
 125 }
 126 #endif
 127
 128 #endif /* __G_MARKUP_H__ */
 129