--- /dev/null
+/*
+ * Copyright (C) 2009-2010 Andy Spencer <andy753421@gmail.com>
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Metacarte
+ * ---------
+ * http://labs.metacarta.com/wms/vmap0?
+ * LAYERS=basic&
+ * SERVICE=WMS&
+ * VERSION=1.1.1&
+ * REQUEST=GetMap&
+ * STYLES=&
+ * EXCEPTIONS=application/vnd.ogc.se_inimage&
+ * FORMAT=image/jpeg&
+ * SRS=EPSG:4326&
+ * BBOX=0,-90,180,90&
+ * WIDTH=256&
+ * HEIGHT=256
+ */
+
+/**
+ * http://www.nasa.network.com/elev?
+ * SERVICE=WMS&
+ * VERSION=1.1.0&
+ * REQUEST=GetMap&
+ * LAYERS=bmng200406&
+ * STYLES=&
+ * SRS=EPSG:4326&
+ * BBOX=-180,-90,180,90&
+ * FORMAT=image/jpeg&
+ * WIDTH=600&
+ * HEIGHT=300
+ *
+ * http://www.nasa.network.com/elev?
+ * SERVICE=WMS&
+ * VERSION=1.1.0&
+ * REQUEST=GetMap&
+ * LAYERS=srtm30&
+ * STYLES=&
+ * SRS=EPSG:4326&
+ * BBOX=-180,-90,180,90&
+ * FORMAT=application/bil32&
+ * WIDTH=600&
+ * HEIGHT=300
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <glib.h>
+
+#include "gis-wms.h"
+
+static gchar *_make_uri(GisWms *wms, GisTile *tile)
+{
+ return g_strdup_printf(
+ "%s?"
+ "SERVICE=WMS&"
+ "VERSION=1.1.0&"
+ "REQUEST=GetMap&"
+ "LAYERS=%s&"
+ "STYLES=&"
+ "SRS=EPSG:4326&"
+ "FORMAT=%s&"
+ "WIDTH=%d&"
+ "HEIGHT=%d&"
+ "BBOX=%f,%f,%f,%f",
+ wms->uri_prefix,
+ wms->uri_layer,
+ wms->uri_format,
+ wms->width,
+ wms->height,
+ tile->edge.w,
+ tile->edge.s,
+ tile->edge.e,
+ tile->edge.n);
+}
+
+static void _soup_chunk_cb(SoupMessage *message, SoupBuffer *chunk, gpointer _file)
+{
+ FILE *file = _file;
+ if (!SOUP_STATUS_IS_SUCCESSFUL(message->status_code)) {
+ g_warning("GisWms: soup_chunk_cb - soup failed with %d", message->status_code);
+ return;
+ }
+ goffset total = soup_message_headers_get_content_length(message->response_headers);
+ if (fwrite(chunk->data, chunk->length, 1, file) != 1)
+ g_warning("GisWms: soup_chunk_cb - eror writing data");
+}
+
+char *gis_wms_make_local(GisWms *self, GisTile *tile)
+{
+ /* Get file path */
+ gchar *tile_path = gis_tile_get_path(tile);
+ gchar *path = g_strdup_printf("%s/%s/%s%s%s",
+ g_get_user_cache_dir(), PACKAGE,
+ self->cache_prefix, tile_path, self->cache_ext);
+ g_free(tile_path);
+
+ /* Return if it already exists */
+ if (g_file_test(path, G_FILE_TEST_EXISTS))
+ return path;
+
+ /* Open temp file for writing */
+ gchar *tmp_path = g_strconcat(path, ".part", NULL);
+ gchar *dirname = g_path_get_dirname(tmp_path);
+ g_mkdir_with_parents(dirname, 0755);
+ g_free(dirname);
+ FILE *file = fopen(tmp_path, "a");
+
+ /* Download file */
+ gchar *uri = _make_uri(self, tile);
+ g_debug("GisWms: make_local - fetching %s", uri);
+ SoupMessage *message = soup_message_new("GET", uri);
+ g_signal_connect(message, "got-chunk", G_CALLBACK(_soup_chunk_cb), file);
+ soup_message_headers_set_range(message->request_headers, ftell(file), -1);
+ int status = soup_session_send_message(self->soup, message);
+ if (!SOUP_STATUS_IS_SUCCESSFUL(message->status_code))
+ g_warning("GisWms: make_local - soup failed with %d", message->status_code);
+ g_free(uri);
+
+ /* Clean up */
+ fclose(file);
+ rename(tmp_path, path);
+ g_free(tmp_path);
+ return path;
+}
+
+GisWms *gis_wms_new(
+ gchar *uri_prefix, gchar *uri_layer, gchar *uri_format,
+ gchar *cache_prefix, gchar *cache_ext,
+ gint width, gint height)
+{
+ GisWms *self = g_new0(GisWms, 1);
+ self->uri_prefix = uri_prefix;
+ self->uri_layer = uri_layer;
+ self->uri_format = uri_format;
+ self->cache_prefix = cache_prefix;
+ self->cache_ext = cache_ext;
+ self->width = width;
+ self->height = height;
+ self->soup = soup_session_sync_new();
+ return self;
+}
+
+void gis_wms_free(GisWms *self)
+{
+ g_object_unref(self->soup);
+ g_free(self);
+}