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Edit File: gmarkup.h

/* 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__ */