File: gmarkup.h

package info (click to toggle)
glib2.0 2.58.3-2+deb10u2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, buster-backports, sid
  • size: 48,956 kB
  • sloc: ansic: 452,656; xml: 16,781; python: 6,149; makefile: 3,776; sh: 1,499; perl: 1,140; cpp: 9
file content (261 lines) | stat: -rw-r--r-- 10,876 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
/* gmarkup.h - Simple XML-like string parser/writer
 *
 *  Copyright 2000 Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __G_MARKUP_H__
#define __G_MARKUP_H__

#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
#error "Only <glib.h> can be included directly."
#endif

#include <stdarg.h>

#include <glib/gerror.h>
#include <glib/gslist.h>

G_BEGIN_DECLS

/**
 * GMarkupError:
 * @G_MARKUP_ERROR_BAD_UTF8: text being parsed was not valid UTF-8
 * @G_MARKUP_ERROR_EMPTY: document contained nothing, or only whitespace
 * @G_MARKUP_ERROR_PARSE: document was ill-formed
 * @G_MARKUP_ERROR_UNKNOWN_ELEMENT: error should be set by #GMarkupParser
 *     functions; element wasn't known
 * @G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE: error should be set by #GMarkupParser
 *     functions; attribute wasn't known
 * @G_MARKUP_ERROR_INVALID_CONTENT: error should be set by #GMarkupParser
 *     functions; content was invalid
 * @G_MARKUP_ERROR_MISSING_ATTRIBUTE: error should be set by #GMarkupParser
 *     functions; a required attribute was missing
 *
 * Error codes returned by markup parsing.
 */
typedef enum
{
  G_MARKUP_ERROR_BAD_UTF8,
  G_MARKUP_ERROR_EMPTY,
  G_MARKUP_ERROR_PARSE,
  /* The following are primarily intended for specific GMarkupParser
   * implementations to set.
   */
  G_MARKUP_ERROR_UNKNOWN_ELEMENT,
  G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE,
  G_MARKUP_ERROR_INVALID_CONTENT,
  G_MARKUP_ERROR_MISSING_ATTRIBUTE
} GMarkupError;

/**
 * G_MARKUP_ERROR:
 *
 * Error domain for markup parsing.
 * Errors in this domain will be from the #GMarkupError enumeration.
 * See #GError for information on error domains.
 */
#define G_MARKUP_ERROR g_markup_error_quark ()

GLIB_AVAILABLE_IN_ALL
GQuark g_markup_error_quark (void);

/**
 * GMarkupParseFlags:
 * @G_MARKUP_DO_NOT_USE_THIS_UNSUPPORTED_FLAG: flag you should not use
 * @G_MARKUP_TREAT_CDATA_AS_TEXT: When this flag is set, CDATA marked
 *     sections are not passed literally to the @passthrough function of
 *     the parser. Instead, the content of the section (without the
 *     `<![CDATA[` and `]]>`) is
 *     passed to the @text function. This flag was added in GLib 2.12
 * @G_MARKUP_PREFIX_ERROR_POSITION: Normally errors caught by GMarkup
 *     itself have line/column information prefixed to them to let the
 *     caller know the location of the error. When this flag is set the
 *     location information is also prefixed to errors generated by the
 *     #GMarkupParser implementation functions
 * @G_MARKUP_IGNORE_QUALIFIED: Ignore (don't report) qualified
 *     attributes and tags, along with their contents.  A qualified
 *     attribute or tag is one that contains ':' in its name (ie: is in
 *     another namespace).  Since: 2.40.
 *
 * Flags that affect the behaviour of the parser.
 */
typedef enum
{
  G_MARKUP_DO_NOT_USE_THIS_UNSUPPORTED_FLAG = 1 << 0,
  G_MARKUP_TREAT_CDATA_AS_TEXT              = 1 << 1,
  G_MARKUP_PREFIX_ERROR_POSITION            = 1 << 2,
  G_MARKUP_IGNORE_QUALIFIED                 = 1 << 3
} GMarkupParseFlags;

/**
 * GMarkupParseContext:
 *
 * A parse context is used to parse a stream of bytes that
 * you expect to contain marked-up text.
 *
 * See g_markup_parse_context_new(), #GMarkupParser, and so
 * on for more details.
 */
typedef struct _GMarkupParseContext GMarkupParseContext;
typedef struct _GMarkupParser GMarkupParser;

/**
 * GMarkupParser:
 * @start_element: Callback to invoke when the opening tag of an element
 *     is seen. The callback's @attribute_names and @attribute_values parameters
 *     are %NULL-terminated.
 * @end_element: Callback to invoke when the closing tag of an element
 *     is seen. Note that this is also called for empty tags like
 *     `<empty/>`.
 * @text: Callback to invoke when some text is seen (text is always
 *     inside an element). Note that the text of an element may be spread
 *     over multiple calls of this function. If the
 *     %G_MARKUP_TREAT_CDATA_AS_TEXT flag is set, this function is also
 *     called for the content of CDATA marked sections.
 * @passthrough: Callback to invoke for comments, processing instructions
 *     and doctype declarations; if you're re-writing the parsed document,
 *     write the passthrough text back out in the same position. If the
 *     %G_MARKUP_TREAT_CDATA_AS_TEXT flag is not set, this function is also
 *     called for CDATA marked sections.
 * @error: Callback to invoke when an error occurs.
 *
 * Any of the fields in #GMarkupParser can be %NULL, in which case they
 * will be ignored. Except for the @error function, any of these callbacks
 * can set an error; in particular the %G_MARKUP_ERROR_UNKNOWN_ELEMENT,
 * %G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE, and %G_MARKUP_ERROR_INVALID_CONTENT
 * errors are intended to be set from these callbacks. If you set an error
 * from a callback, g_markup_parse_context_parse() will report that error
 * back to its caller.
 */
struct _GMarkupParser
{
  /* Called for open tags <foo bar="baz"> */
  void (*start_element)  (GMarkupParseContext *context,
                          const gchar         *element_name,
                          const gchar        **attribute_names,
                          const gchar        **attribute_values,
                          gpointer             user_data,
                          GError             **error);

  /* Called for close tags </foo> */
  void (*end_element)    (GMarkupParseContext *context,
                          const gchar         *element_name,
                          gpointer             user_data,
                          GError             **error);

  /* Called for character data */
  /* text is not nul-terminated */
  void (*text)           (GMarkupParseContext *context,
                          const gchar         *text,
                          gsize                text_len,
                          gpointer             user_data,
                          GError             **error);

  /* Called for strings that should be re-saved verbatim in this same
   * position, but are not otherwise interpretable.  At the moment
   * this includes comments and processing instructions.
   */
  /* text is not nul-terminated. */
  void (*passthrough)    (GMarkupParseContext *context,
                          const gchar         *passthrough_text,
                          gsize                text_len,
                          gpointer             user_data,
                          GError             **error);

  /* Called on error, including one set by other
   * methods in the vtable. The GError should not be freed.
   */
  void (*error)          (GMarkupParseContext *context,
                          GError              *error,
                          gpointer             user_data);
};

GLIB_AVAILABLE_IN_ALL
GMarkupParseContext *g_markup_parse_context_new   (const GMarkupParser *parser,
                                                   GMarkupParseFlags    flags,
                                                   gpointer             user_data,
                                                   GDestroyNotify       user_data_dnotify);
GLIB_AVAILABLE_IN_2_36
GMarkupParseContext *g_markup_parse_context_ref   (GMarkupParseContext *context);
GLIB_AVAILABLE_IN_2_36
void                 g_markup_parse_context_unref (GMarkupParseContext *context);
GLIB_AVAILABLE_IN_ALL
void                 g_markup_parse_context_free  (GMarkupParseContext *context);
GLIB_AVAILABLE_IN_ALL
gboolean             g_markup_parse_context_parse (GMarkupParseContext *context,
                                                   const gchar         *text,
                                                   gssize               text_len,
                                                   GError             **error);
GLIB_AVAILABLE_IN_ALL
void                 g_markup_parse_context_push  (GMarkupParseContext *context,
                                                   const GMarkupParser *parser,
                                                   gpointer             user_data);
GLIB_AVAILABLE_IN_ALL
gpointer             g_markup_parse_context_pop   (GMarkupParseContext *context);

GLIB_AVAILABLE_IN_ALL
gboolean             g_markup_parse_context_end_parse (GMarkupParseContext *context,
                                                       GError             **error);
GLIB_AVAILABLE_IN_ALL
const gchar *        g_markup_parse_context_get_element (GMarkupParseContext *context);
GLIB_AVAILABLE_IN_ALL
const GSList *       g_markup_parse_context_get_element_stack (GMarkupParseContext *context);

/* For user-constructed error messages, has no precise semantics */
GLIB_AVAILABLE_IN_ALL
void                 g_markup_parse_context_get_position (GMarkupParseContext *context,
                                                          gint                *line_number,
                                                          gint                *char_number);
GLIB_AVAILABLE_IN_ALL
gpointer             g_markup_parse_context_get_user_data (GMarkupParseContext *context);

/* useful when saving */
GLIB_AVAILABLE_IN_ALL
gchar* g_markup_escape_text (const gchar *text,
                             gssize       length);

GLIB_AVAILABLE_IN_ALL
gchar *g_markup_printf_escaped (const char *format,
				...) G_GNUC_PRINTF (1, 2);
GLIB_AVAILABLE_IN_ALL
gchar *g_markup_vprintf_escaped (const char *format,
				 va_list     args) G_GNUC_PRINTF(1, 0);

typedef enum
{
  G_MARKUP_COLLECT_INVALID,
  G_MARKUP_COLLECT_STRING,
  G_MARKUP_COLLECT_STRDUP,
  G_MARKUP_COLLECT_BOOLEAN,
  G_MARKUP_COLLECT_TRISTATE,

  G_MARKUP_COLLECT_OPTIONAL = (1 << 16)
} GMarkupCollectType;


/* useful from start_element */
GLIB_AVAILABLE_IN_ALL
gboolean   g_markup_collect_attributes (const gchar         *element_name,
                                        const gchar        **attribute_names,
                                        const gchar        **attribute_values,
                                        GError             **error,
                                        GMarkupCollectType   first_type,
                                        const gchar         *first_attr,
                                        ...);

G_END_DECLS

#endif /* __G_MARKUP_H__ */