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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>GContentType: GIO Reference Manual</title>
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<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
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<link rel="home" href="index.html" title="GIO Reference Manual">
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<link rel="up" href="types.html" title="File types and applications">
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<link rel="prev" href="types.html" title="File types and applications">
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<link rel="next" href="GAppInfo.html" title="GAppInfo">
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<meta name="generator" content="GTK-Doc V1.27 (XML mode)">
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<link rel="stylesheet" href="style.css" type="text/css">
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</head>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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Top |
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Description
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GContentType
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GContentType — Platform-specific content typing
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Functions
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gboolean
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g_content_type_equals ()
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gboolean
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g_content_type_is_a ()
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gboolean
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g_content_type_is_mime_type ()
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gboolean
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g_content_type_is_unknown ()
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gchar *
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g_content_type_get_description ()
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gchar *
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g_content_type_get_mime_type ()
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GIcon *
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g_content_type_get_icon ()
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GIcon *
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g_content_type_get_symbolic_icon ()
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gchar *
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g_content_type_get_generic_icon_name ()
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gboolean
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g_content_type_can_be_executable ()
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gchar *
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g_content_type_from_mime_type ()
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gchar *
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g_content_type_guess ()
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gchar **
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g_content_type_guess_for_tree ()
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GList *
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g_content_types_get_registered ()
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Includes
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#include <gio/gio.h>
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Description
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A content type is a platform specific string that defines the type
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of a file. On UNIX it is a
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mime type
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like "text/plain" or "image/png".
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On Win32 it is an extension string like ".doc", ".txt" or a perceived
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string like "audio". Such strings can be looked up in the registry at
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HKEY_CLASSES_ROOT.
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On OSX it is a Uniform Type Identifier
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such as "com.apple.application".
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Functions
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g_content_type_equals ()
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gboolean
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g_content_type_equals (const gchar *type1,
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const gchar *type2);
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Compares two content types for equality.
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Parameters
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type1
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a content type string
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type2
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a content type string
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Returns
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TRUE if the two strings are identical or equivalent,
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FALSE otherwise.
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g_content_type_is_a ()
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gboolean
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g_content_type_is_a (const gchar *type,
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const gchar *supertype);
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Determines if type
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is a subset of supertype
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.
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Parameters
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type
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a content type string
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supertype
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a content type string
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Returns
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TRUE if type
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is a kind of supertype
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,
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FALSE otherwise.
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g_content_type_is_mime_type ()
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gboolean
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g_content_type_is_mime_type (const gchar *type,
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const gchar *mime_type);
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Determines if type
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is a subset of mime_type
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.
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Convenience wrapper around g_content_type_is_a().
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Parameters
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type
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a content type string
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mime_type
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a mime type string
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Returns
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TRUE if type
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is a kind of mime_type
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,
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FALSE otherwise.
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Since: 2.52
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g_content_type_is_unknown ()
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gboolean
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g_content_type_is_unknown (const gchar *type);
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Checks if the content type is the generic "unknown" type.
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On UNIX this is the "application/octet-stream" mimetype,
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while on win32 it is "*" and on OSX it is a dynamic type
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or octet-stream.
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Parameters
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type
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a content type string
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Returns
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TRUE if the type is the unknown type.
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g_content_type_get_description ()
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gchar *
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g_content_type_get_description (const gchar *type);
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Gets the human readable description of the content type.
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Parameters
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type
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a content type string
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Returns
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a short description of the content type type
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. Free the
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returned string with g_free()
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g_content_type_get_mime_type ()
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gchar *
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g_content_type_get_mime_type (const gchar *type);
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Gets the mime type for the content type, if one is registered.
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Parameters
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type
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a content type string
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Returns
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the registered mime type for the given type
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,
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or NULL if unknown.
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[nullable]
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g_content_type_get_icon ()
|
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GIcon *
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g_content_type_get_icon (const gchar *type);
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Gets the icon for a content type.
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Parameters
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type
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a content type string
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Returns
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GIcon corresponding to the content type. Free the returned
|
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object with g_object_unref().
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[transfer full]
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g_content_type_get_symbolic_icon ()
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GIcon *
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g_content_type_get_symbolic_icon (const gchar *type);
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Gets the symbolic icon for a content type.
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Parameters
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type
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a content type string
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Returns
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symbolic GIcon corresponding to the content type.
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Free the returned object with g_object_unref().
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[transfer full]
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Since: 2.34
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g_content_type_get_generic_icon_name ()
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gchar *
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g_content_type_get_generic_icon_name (const gchar *type);
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Gets the generic icon name for a content type.
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See the
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shared-mime-info
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specification for more on the generic icon name.
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Parameters
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type
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a content type string
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Returns
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the registered generic icon name for the given type
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,
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or NULL if unknown. Free with g_free().
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[nullable]
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Since: 2.34
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g_content_type_can_be_executable ()
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gboolean
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g_content_type_can_be_executable (const gchar *type);
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Checks if a content type can be executable. Note that for instance
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things like text files can be executables (i.e. scripts and batch files).
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Parameters
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type
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a content type string
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Returns
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TRUE if the file type corresponds to a type that
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can be executable, FALSE otherwise.
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g_content_type_from_mime_type ()
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gchar *
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g_content_type_from_mime_type (const gchar *mime_type);
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Tries to find a content type based on the mime type name.
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Parameters
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mime_type
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a mime type string
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Returns
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Newly allocated string with content type or
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NULL. Free with g_free().
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[nullable]
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Since: 2.18
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g_content_type_guess ()
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gchar *
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g_content_type_guess (const gchar *filename,
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const guchar *data,
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gsize data_size,
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gboolean *result_uncertain);
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Guesses the content type based on example data. If the function is
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uncertain, result_uncertain
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will be set to TRUE. Either filename
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or data
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may be NULL, in which case the guess will be based solely
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on the other argument.
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Parameters
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filename
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a string, or NULL.
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[nullable]
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data
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a stream of data, or NULL.
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[nullable][array length=data_size]
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data_size
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the size of data
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result_uncertain
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return location for the certainty
|
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of the result, or NULL.
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[out][optional]
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Returns
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a string indicating a guessed content type for the
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given data. Free with g_free()
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g_content_type_guess_for_tree ()
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gchar **
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g_content_type_guess_for_tree (GFile *root);
|
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Tries to guess the type of the tree with root root
|
|
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, by
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looking at the files it contains. The result is an array
|
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of content types, with the best guess coming first.
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The types returned all have the form x-content/foo, e.g.
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x-content/audio-cdda (for audio CDs) or x-content/image-dcf
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(for a camera memory card). See the
|
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shared-mime-info
|
|
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specification for more on x-content types.
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This function is useful in the implementation of
|
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g_mount_guess_content_type().
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Parameters
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root
|
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the root of the tree to guess a type for
|
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Returns
|
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an NULL-terminated
|
|
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array of zero or more content types. Free with g_strfreev().
|
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[transfer full][array zero-terminated=1]
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Since: 2.18
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g_content_types_get_registered ()
|
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GList *
|
|
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g_content_types_get_registered (void);
|
|
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Gets a list of strings containing all the registered content types
|
|
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known to the system. The list and its data should be freed using
|
|
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g_list_free_full (list, g_free).
|
|
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|
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Returns
|
|
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list of the registered
|
|
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content types.
|
|
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[element-type utf8][transfer full]
|
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Types and Values
|
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Generated by GTK-Doc V1.27
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</body>
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</html>
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