ev-metadata.h File Reference

#include <glib-object.h>
#include <gio/gio.h>

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Macros
#define	EV_TYPE_METADATA   (ev_metadata_get_type())
#define	EV_METADATA(object)   (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_METADATA, EvMetadata))
#define	EV_METADATA_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_METADATA, EvMetadataClass))
#define	EV_IS_METADATA(object)   (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_METADATA))

Typedefs
typedef struct _EvMetadata	EvMetadata
typedef struct _EvMetadataClass	EvMetadataClass

Functions
GType	ev_metadata_get_type (void) G_GNUC_CONST
EvMetadata *	ev_metadata_new (GFile *file)
gboolean	ev_metadata_is_empty (EvMetadata *metadata)
gboolean	ev_metadata_get_string (EvMetadata *metadata, const gchar *key, gchar **value)
gboolean	ev_metadata_set_string (EvMetadata *metadata, const gchar *key, const gchar *value)
gboolean	ev_metadata_get_int (EvMetadata *metadata, const gchar *key, gint *value)
gboolean	ev_metadata_set_int (EvMetadata *metadata, const gchar *key, gint value)
gboolean	ev_metadata_get_double (EvMetadata *metadata, const gchar *key, gdouble *value)
gboolean	ev_metadata_set_double (EvMetadata *metadata, const gchar *key, gdouble value)
gboolean	ev_metadata_get_boolean (EvMetadata *metadata, const gchar *key, gboolean *value)
gboolean	ev_metadata_set_boolean (EvMetadata *metadata, const gchar *key, gboolean value)
gboolean	ev_metadata_has_key (EvMetadata *metadata, const gchar *key)
gboolean	ev_is_metadata_supported_for_file (GFile *file)

Macro Definition Documentation

#define EV_IS_METADATA

(

object)

(G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_METADATA))

Definition at line 32 of file ev-metadata.h.

#define EV_METADATA

(

object)

(G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_METADATA, EvMetadata))

Definition at line 30 of file ev-metadata.h.

#define EV_METADATA_CLASS

(

klass)

(G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_METADATA, EvMetadataClass))

Definition at line 31 of file ev-metadata.h.

#define EV_TYPE_METADATA   (ev_metadata_get_type())

Definition at line 29 of file ev-metadata.h.

Typedef Documentation

typedef struct _EvMetadata EvMetadata

Definition at line 34 of file ev-metadata.h.

typedef struct _EvMetadataClass EvMetadataClass

Definition at line 35 of file ev-metadata.h.

Function Documentation

gboolean ev_is_metadata_supported_for_file

(

GFile *

file)

Definition at line 305 of file ev-metadata.c.

{
    GFileAttributeInfoList *namespaces;
    gint i;
    gboolean retval = FALSE;

    namespaces = g_file_query_writable_namespaces (file, NULL, NULL);
    if (!namespaces)
        return retval;

    for (i = 0; i < namespaces->n_infos; i++) {
        if (strcmp (namespaces->infos[i].name, "metadata") == 0) {
            retval = TRUE;
            break;
        }
    }

    g_file_attribute_info_list_unref (namespaces);

    return retval;
}

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gboolean ev_metadata_get_boolean	(	EvMetadata *	metadata,
		const gchar *	key,
		gboolean *	value
	)

Definition at line 276 of file ev-metadata.c.

{
    gint int_value;

    if (!ev_metadata_get_int (metadata, key, &int_value))
        return FALSE;

    *value = int_value;
    return TRUE;
}

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gboolean ev_metadata_get_double	(	EvMetadata *	metadata,
		const gchar *	key,
		gdouble *	value
	)

Definition at line 244 of file ev-metadata.c.

{
    gchar  *string_value;
    gchar  *endptr;
    gdouble double_value;

    if (!ev_metadata_get_string (metadata, key, &string_value))
        return FALSE;

    double_value = g_ascii_strtod (string_value, &endptr);
    if (double_value == 0. && string_value == endptr)
        return FALSE;

    *value = double_value;
    return TRUE;
}

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gboolean ev_metadata_get_int	(	EvMetadata *	metadata,
		const gchar *	key,
		gint *	value
	)

Definition at line 212 of file ev-metadata.c.

{
    gchar *string_value;
    gchar *endptr;
    gint   int_value;

    if (!ev_metadata_get_string (metadata, key, &string_value))
        return FALSE;

    int_value = g_ascii_strtoull (string_value, &endptr, 0);
    if (int_value == 0 && string_value == endptr)
        return FALSE;

    *value = int_value;
    return TRUE;
}

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gboolean ev_metadata_get_string	(	EvMetadata *	metadata,
		const gchar *	key,
		gchar **	value
	)

Definition at line 148 of file ev-metadata.c.

{
    gchar *v;

    v = g_hash_table_lookup (metadata->items, key);
    if (!v)
        return FALSE;

    *value = v;
    return TRUE;
}

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GType ev_metadata_get_type

(

void

)

gboolean ev_metadata_has_key	(	EvMetadata *	metadata,
		const gchar *	key
	)

Definition at line 298 of file ev-metadata.c.

{
        return g_hash_table_lookup (metadata->items, key) != NULL;
}

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gboolean ev_metadata_is_empty

(

EvMetadata *

metadata)

Definition at line 142 of file ev-metadata.c.

{
    return g_hash_table_size (metadata->items) == 0;
}

EvMetadata* ev_metadata_new

(

GFile *

file)

Definition at line 126 of file ev-metadata.c.

{
    EvMetadata *metadata;

    g_return_val_if_fail (G_IS_FILE (file), NULL);

    metadata = EV_METADATA (g_object_new (EV_TYPE_METADATA, NULL));
        if (!ev_file_is_temp (file)) {
                metadata->file = g_object_ref (file);
                ev_metadata_load (metadata);
        }

    return metadata;
}

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gboolean ev_metadata_set_boolean	(	EvMetadata *	metadata,
		const gchar *	key,
		gboolean	value
	)

Definition at line 290 of file ev-metadata.c.

{
    return ev_metadata_set_string (metadata, key, value ? "1" : "0");
}

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gboolean ev_metadata_set_double	(	EvMetadata *	metadata,
		const gchar *	key,
		gdouble	value
	)

Definition at line 264 of file ev-metadata.c.

{
    gchar string_value[G_ASCII_DTOSTR_BUF_SIZE];

    g_ascii_dtostr (string_value, G_ASCII_DTOSTR_BUF_SIZE, value);

    return ev_metadata_set_string (metadata, key, string_value);
}

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gboolean ev_metadata_set_int	(	EvMetadata *	metadata,
		const gchar *	key,
		gint	value
	)

Definition at line 232 of file ev-metadata.c.

{
    gchar string_value[32];

    g_snprintf (string_value, sizeof (string_value), "%d", value);

    return ev_metadata_set_string (metadata, key, string_value);
}

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gboolean ev_metadata_set_string	(	EvMetadata *	metadata,
		const gchar *	key,
		const gchar *	value
	)

Definition at line 176 of file ev-metadata.c.

{
    GFileInfo *info;
    gchar     *gio_key;

        g_hash_table_insert (metadata->items, g_strdup (key), g_strdup (value));
        if (!metadata->file)
                return TRUE;

    info = g_file_info_new ();

    gio_key = g_strconcat (EV_METADATA_NAMESPACE"::", key, NULL);
    if (value) {
        g_file_info_set_attribute_string (info, gio_key, value);
    } else {
        g_file_info_set_attribute (info, gio_key,
                       G_FILE_ATTRIBUTE_TYPE_INVALID,
                       NULL);
    }
    g_free (gio_key);

    g_file_set_attributes_async (metadata->file,
                     info,
                     0,
                     G_PRIORITY_DEFAULT,
                     NULL,
                     (GAsyncReadyCallback)metadata_set_callback,
                     metadata);
    g_object_unref (info);

    return TRUE;
}

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