gimp/plug-ins/metadata/metadata-impexp.c

258 lines
7.6 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* metadata-editor.c
* Copyright (C) 2016, 2017 Ben Touchette
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gexiv2/gexiv2.h>
#include <glib/gstdio.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#include "metadata-xml.h"
#include "metadata-misc.h"
#include "metadata-tags.h"
#include "metadata-impexp.h"
#include "metadata-editor.h"
extern gboolean gimpmetadata;
extern gboolean xmptag;
extern gboolean iptctag;
extern gboolean tagvalue;
extern gboolean tagname;
extern gboolean force_write;
extern gchar *str_tag_value;
extern gchar *str_tag_name;
const GMarkupParser xml_markup_parser =
{
xml_parser_start_element,
xml_parser_end_element,
xml_parser_data,
NULL, /* passthrough */
NULL /* error */
};
typedef struct
{
MetadataMode mode;
gchar *mode_string;
} MetadataModeConversion;
const MetadataModeConversion metadata_mode_conversion[] =
{
{ MODE_SINGLE, "single" },
{ MODE_MULTI, "multi" },
{ MODE_COMBO, "combo" },
{ MODE_LIST, "list" },
};
/* ============================================================================
* ==[ METADATA IMPORT TEMPLATE ]==============================================
* ============================================================================
*/
void
import_file_metadata(metadata_editor *args)
{
GimpXmlParser *xml_parser;
GError *error = NULL;
FILE *file;
gimpmetadata = FALSE;
xmptag = FALSE;
iptctag = FALSE;
tagvalue = FALSE;
tagname = FALSE;
file = g_fopen (args->filename, "r");
if (file != NULL)
{
/* parse xml data fetched from file */
xml_parser = xml_parser_new (&xml_markup_parser, args);
if (! xml_parser_parse_file (xml_parser, args->filename, &error))
{
g_warning ("Error parsing xml: %s.", error? error->message: "");
g_clear_error (&error);
}
xml_parser_free (xml_parser);
fclose (file);
}
}
/* ============================================================================
* ==[ METADATA EXPORT TEMPLATE ]==============================================
* ============================================================================
*/
void
export_file_metadata (metadata_editor *args)
{
FILE *file;
GString *xmldata;
gint i, size;
if (force_write == TRUE)
{
/* Save fields in case of updates */
metadata_editor_write_callback (args->dialog, args, args->image);
/* Fetch a fresh copy of the metadata */
args->metadata = GEXIV2_METADATA (gimp_image_get_metadata (args->image));
}
xmldata = g_string_new ("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
"<gimp-metadata>\n");
/* HANDLE IPTC */
for (i = 0; i < n_equivalent_metadata_tags; i++)
{
int index = equivalent_metadata_tags[i].default_tag_index;
g_string_append (xmldata, "\t<iptc-tag>\n");
g_string_append (xmldata, "\t\t<tag-name>");
g_string_append (xmldata, equivalent_metadata_tags[i].tag);
g_string_append (xmldata, "</tag-name>\n");
g_string_append (xmldata, "\t\t<tag-mode>");
g_string_append (xmldata, metadata_mode_conversion[equivalent_metadata_tags[i].mode].mode_string);
g_string_append (xmldata, "</tag-mode>\n");
g_string_append (xmldata, "\t\t<tag-value>");
if (default_metadata_tags[index].mode == MODE_SINGLE ||
default_metadata_tags[index].mode == MODE_MULTI)
{
const gchar *value;
value = get_tag_ui_text (args, default_metadata_tags[index].tag,
default_metadata_tags[index].mode);
if (value)
{
gchar *value_utf;
value_utf = g_locale_to_utf8 (value, -1, NULL, NULL, NULL);
g_string_append (xmldata, value_utf);
g_free (value_utf);
}
}
else if (default_metadata_tags[index].mode == MODE_COMBO)
{
gint data = get_tag_ui_combo (args, default_metadata_tags[index].tag,
default_metadata_tags[index].mode);
g_string_append_printf (xmldata, "%d", data);
}
else if (default_metadata_tags[i].mode == MODE_LIST)
{
/* No IPTC lists elements at this point */
}
g_string_append (xmldata, "</tag-value>\n");
g_string_append (xmldata, "\t</iptc-tag>\n");
}
/* HANDLE XMP */
for (i = 0; i < n_default_metadata_tags; i++)
{
g_string_append (xmldata, "\t<xmp-tag>\n");
g_string_append (xmldata, "\t\t<tag-name>");
g_string_append (xmldata, default_metadata_tags[i].tag);
g_string_append (xmldata, "</tag-name>\n");
g_string_append (xmldata, "\t\t<tag-mode>");
g_string_append (xmldata, metadata_mode_conversion[default_metadata_tags[i].mode].mode_string);
g_string_append (xmldata, "</tag-mode>\n");
if (default_metadata_tags[i].mode == MODE_SINGLE ||
default_metadata_tags[i].mode == MODE_MULTI)
{
const gchar *value;
g_string_append (xmldata, "\t\t<tag-value>");
value = get_tag_ui_text (args, default_metadata_tags[i].tag,
default_metadata_tags[i].mode);
if (value)
{
gchar *value_utf;
value_utf = g_locale_to_utf8 (value, -1, NULL, NULL, NULL);
g_string_append (xmldata, value_utf);
g_free (value_utf);
}
g_string_append (xmldata, "</tag-value>\n");
}
else if (default_metadata_tags[i].mode == MODE_COMBO)
{
gint data;
g_string_append (xmldata, "\t\t<tag-value>");
data = get_tag_ui_combo (args, default_metadata_tags[i].tag,
default_metadata_tags[i].mode);
g_string_append_printf (xmldata, "%d", data);
g_string_append (xmldata, "</tag-value>\n");
}
else if (default_metadata_tags[i].mode == MODE_LIST)
{
gchar *data;
g_string_append (xmldata, "\t\t<tag-list-value>\n");
data = get_tag_ui_list (args, default_metadata_tags[i].tag,
default_metadata_tags[i].mode);
if (data)
{
g_string_append (xmldata, data);
g_free(data);
}
g_string_append (xmldata, "\t\t</tag-list-value>\n");
}
g_string_append (xmldata, "\t</xmp-tag>\n");
}
g_string_append (xmldata, "</gimp-metadata>\n");
size = strlen (xmldata->str);
file = g_fopen (args->filename, "w");
if (file != NULL)
{
GError *error = NULL;
if (! g_file_set_contents (args->filename, xmldata->str, size, &error))
{
g_warning ("Error saving file: %s.", error? error->message: "");
g_clear_error (&error);
}
fclose (file);
}
if (xmldata)
{
g_string_free(xmldata, TRUE);
}
}