/* gmarkup.h - Simple XML-like string parser/writer
*
* Copyright 2000 Red Hat, Inc.
*
* GLib 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 of the
* License, or (at your option) any later version.
*
* GLib 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 GLib; see the file COPYING.LIB. If not,
* write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
#error "Only <glib.h> can be included directly."
#endif
#ifndef __G_MARKUP_H__
#define __G_MARKUP_H__
#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 ()
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
* <literal><![CDATA[</literal> and <literal>]]></literal>) 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
*
* 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
} 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.
* @end_element: Callback to invoke when the closing tag of an element
* is seen. Note that this is also called for empty tags like
* <literal><empty/></literal>.
* @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);
};
GMarkupParseContext *g_markup_parse_context_new (const GMarkupParser *parser,
GMarkupParseFlags flags,
gpointer user_data,
GDestroyNotify user_data_dnotify);
void g_markup_parse_context_free (GMarkupParseContext *context);
gboolean g_markup_parse_context_parse (GMarkupParseContext *context,
const gchar *text,
gssize text_len,
GError **error);
void g_markup_parse_context_push (GMarkupParseContext *context,
const GMarkupParser *parser,
gpointer user_data);
gpointer g_markup_parse_context_pop (GMarkupParseContext *context);
gboolean g_markup_parse_context_end_parse (GMarkupParseContext *context,
GError **error);
const gchar * g_markup_parse_context_get_element (GMarkupParseContext *context);
const GSList * g_markup_parse_context_get_element_stack (GMarkupParseContext *context);
/* For user-constructed error messages, has no precise semantics */
void g_markup_parse_context_get_position (GMarkupParseContext *context,
gint *line_number,
gint *char_number);
gpointer g_markup_parse_context_get_user_data (GMarkupParseContext *context);
/* useful when saving */
gchar* g_markup_escape_text (const gchar *text,
gssize length);
gchar *g_markup_printf_escaped (const char *format,
...) G_GNUC_PRINTF (1, 2);
gchar *g_markup_vprintf_escaped (const char *format,
va_list args);
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 */
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__ */