2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
5 * Copyright (C) 2009, Guilhem Bonnefille <guilhem.bonnefille@gmail.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 * Created by Quy Tonthat <qtonthat@gmail.com>
33 #include <glib/gstdio.h>
34 #include <glib/gprintf.h>
35 #include <glib/gi18n.h>
39 #include "vikgotoxmltool.h"
42 static void _goto_xml_tool_class_init ( VikGotoXmlToolClass *klass );
43 static void _goto_xml_tool_init ( VikGotoXmlTool *self );
45 static void _goto_xml_tool_finalize ( GObject *gob );
47 static gchar *_goto_xml_tool_get_url_format ( VikGotoTool *self );
48 static gboolean _goto_xml_tool_parse_file_for_latlon(VikGotoTool *self, gchar *filename, struct LatLon *ll);
50 typedef struct _VikGotoXmlToolPrivate VikGotoXmlToolPrivate;
52 struct _VikGotoXmlToolPrivate
63 #define GOTO_XML_TOOL_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), \
64 VIK_GOTO_XML_TOOL_TYPE, \
65 VikGotoXmlToolPrivate))
67 GType vik_goto_xml_tool_get_type()
69 static GType w_type = 0;
73 static const GTypeInfo w_info =
75 sizeof (VikGotoXmlToolClass),
77 NULL, /* base_finalize */
78 (GClassInitFunc) _goto_xml_tool_class_init,
79 NULL, /* class_finalize */
80 NULL, /* class_data */
81 sizeof (VikGotoXmlTool),
83 (GInstanceInitFunc) _goto_xml_tool_init,
85 w_type = g_type_register_static ( VIK_GOTO_TOOL_TYPE, "VikGotoXmlTool", &w_info, 0 );
103 _goto_xml_tool_set_property (GObject *object,
108 VikGotoXmlTool *self = VIK_GOTO_XML_TOOL (object);
109 VikGotoXmlToolPrivate *priv = GOTO_XML_TOOL_GET_PRIVATE (self);
110 gchar **splitted = NULL;
114 case PROP_URL_FORMAT:
115 g_free (priv->url_format);
116 priv->url_format = g_value_dup_string (value);
120 splitted = g_strsplit (g_value_get_string (value), "@", 2);
121 g_free (priv->lat_path);
122 priv->lat_path = splitted[0];
125 g_object_set (object, "lat-attr", splitted[1], NULL);
126 g_free (splitted[1]);
128 /* only free the tab, not the strings */
134 /* Avoid to overwrite XPATH value */
135 /* NB: This disable future overwriting,
136 but as property is CONSTRUCT_ONLY there is no matter */
137 if (!priv->lat_attr || g_value_get_string (value))
139 g_free (priv->lat_attr);
140 priv->lat_attr = g_value_dup_string (value);
145 splitted = g_strsplit (g_value_get_string (value), "@", 2);
146 g_free (priv->lon_path);
147 priv->lon_path = splitted[0];
150 g_object_set (object, "lon-attr", splitted[1], NULL);
151 g_free (splitted[1]);
153 /* only free the tab, not the strings */
159 /* Avoid to overwrite XPATH value */
160 /* NB: This disable future overwriting,
161 but as property is CONSTRUCT_ONLY there is no matter */
162 if (!priv->lon_attr || g_value_get_string (value))
164 g_free (priv->lon_attr);
165 priv->lon_attr = g_value_dup_string (value);
170 /* We don't have any other property... */
171 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
177 _goto_xml_tool_get_property (GObject *object,
182 VikGotoXmlTool *self = VIK_GOTO_XML_TOOL (object);
183 VikGotoXmlToolPrivate *priv = GOTO_XML_TOOL_GET_PRIVATE (self);
187 case PROP_URL_FORMAT:
188 g_value_set_string (value, priv->url_format);
192 g_value_set_string (value, priv->lat_path);
196 g_value_set_string (value, priv->lat_attr);
200 g_value_set_string (value, priv->lon_path);
204 g_value_set_string (value, priv->lon_attr);
208 /* We don't have any other property... */
209 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
214 static void _goto_xml_tool_class_init ( VikGotoXmlToolClass *klass )
216 GObjectClass *object_class;
217 VikGotoToolClass *parent_class;
220 object_class = G_OBJECT_CLASS (klass);
222 object_class->finalize = _goto_xml_tool_finalize;
223 object_class->set_property = _goto_xml_tool_set_property;
224 object_class->get_property = _goto_xml_tool_get_property;
227 pspec = g_param_spec_string ("url-format",
229 "The format of the URL",
230 "<no-set>" /* default value */,
231 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
232 g_object_class_install_property (object_class,
236 pspec = g_param_spec_string ("lat-path",
238 "XPath of the latitude",
239 "<no-set>" /* default value */,
240 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
241 g_object_class_install_property (object_class,
245 pspec = g_param_spec_string ("lat-attr",
246 "Latitude attribute",
247 "XML attribute of the latitude",
248 NULL /* default value */,
249 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
250 g_object_class_install_property (object_class,
254 pspec = g_param_spec_string ("lon-path",
256 "XPath of the longitude",
257 "<no-set>" /* default value */,
258 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
259 g_object_class_install_property (object_class,
263 pspec = g_param_spec_string ("lon-attr",
264 "Longitude attribute",
265 "XML attribute of the longitude",
266 NULL /* default value */,
267 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
268 g_object_class_install_property (object_class,
272 parent_class = VIK_GOTO_TOOL_CLASS (klass);
274 parent_class->get_url_format = _goto_xml_tool_get_url_format;
275 parent_class->parse_file_for_latlon = _goto_xml_tool_parse_file_for_latlon;
277 g_type_class_add_private (klass, sizeof (VikGotoXmlToolPrivate));
280 VikGotoXmlTool *vik_goto_xml_tool_new ()
282 return VIK_GOTO_XML_TOOL ( g_object_new ( VIK_GOTO_XML_TOOL_TYPE, "label", "Google", NULL ) );
285 static void _goto_xml_tool_init ( VikGotoXmlTool *self )
287 VikGotoXmlToolPrivate *priv = GOTO_XML_TOOL_GET_PRIVATE (self);
288 priv->url_format = NULL;
289 priv->lat_path = NULL;
290 priv->lat_attr = NULL;
291 priv->lon_path = NULL;
292 priv->lon_attr = NULL;
298 static void _goto_xml_tool_finalize ( GObject *gob )
300 G_OBJECT_GET_CLASS(gob)->finalize(gob);
304 stack_is_path (const GSList *stack,
307 gboolean equal = TRUE;
308 int stack_len = g_list_length((GList *)stack);
311 while (equal == TRUE && i >= 0)
317 const gchar *current = g_list_nth_data((GList *)stack, i);
318 size_t len = strlen(current);
319 if (strncmp(path, current, len) != 0 )
332 /* Called for open tags <foo bar="baz"> */
334 _start_element (GMarkupParseContext *context,
335 const gchar *element_name,
336 const gchar **attribute_names,
337 const gchar **attribute_values,
341 VikGotoXmlTool *self = VIK_GOTO_XML_TOOL (user_data);
342 VikGotoXmlToolPrivate *priv = GOTO_XML_TOOL_GET_PRIVATE (self);
343 const GSList *stack = g_markup_parse_context_get_element_stack (context);
345 if (priv->lon_attr != NULL && isnan(priv->ll.lon) && stack_is_path (stack, priv->lon_path))
348 while (attribute_names[i] != NULL)
350 if (strcmp (attribute_names[i], priv->lon_attr) == 0)
352 priv->ll.lon = g_ascii_strtod(attribute_values[i], NULL);
358 if (priv->lat_attr != NULL && isnan(priv->ll.lat) && stack_is_path (stack, priv->lat_path))
361 while (attribute_names[i] != NULL)
363 if (strcmp (attribute_names[i], priv->lat_attr) == 0)
365 priv->ll.lat = g_ascii_strtod(attribute_values[i], NULL);
372 /* Called for character data */
373 /* text is not nul-terminated */
375 _text (GMarkupParseContext *context,
381 VikGotoXmlTool *self = VIK_GOTO_XML_TOOL (user_data);
382 VikGotoXmlToolPrivate *priv = GOTO_XML_TOOL_GET_PRIVATE (self);
383 const GSList *stack = g_markup_parse_context_get_element_stack (context);
384 gchar *textl = g_strndup(text, text_len);
385 /* Store only first result */
386 if (priv->lat_attr == NULL && isnan(priv->ll.lat) && stack_is_path (stack, priv->lat_path))
388 priv->ll.lat = g_ascii_strtod(textl, NULL);
390 if (priv->lon_attr == NULL && isnan(priv->ll.lon) && stack_is_path (stack, priv->lon_path))
392 priv->ll.lon = g_ascii_strtod(textl, NULL);
398 _goto_xml_tool_parse_file_for_latlon(VikGotoTool *self, gchar *filename, struct LatLon *ll)
400 GMarkupParser xml_parser;
401 GMarkupParseContext *xml_context = NULL;
402 GError *error = NULL;
403 VikGotoXmlToolPrivate *priv = GOTO_XML_TOOL_GET_PRIVATE (self);
404 g_return_val_if_fail(priv != NULL, FALSE);
406 g_debug ("%s: %s@%s, %s@%s",
408 priv->lat_path, priv->lat_attr,
409 priv->lon_path, priv->lon_attr);
411 FILE *file = g_fopen (filename, "r");
413 /* TODO emit warning */
416 /* setup context parse (ie callbacks) */
417 if (priv->lat_attr != NULL || priv->lon_attr != NULL)
418 // At least one coordinate uses an attribute
419 xml_parser.start_element = &_start_element;
421 xml_parser.start_element = NULL;
422 xml_parser.end_element = NULL;
423 if (priv->lat_attr == NULL || priv->lon_attr == NULL)
424 // At least one coordinate uses a raw element
425 xml_parser.text = &_text;
427 xml_parser.text = NULL;
428 xml_parser.passthrough = NULL;
429 xml_parser.error = NULL;
431 xml_context = g_markup_parse_context_new(&xml_parser, 0, self, NULL);
439 while (xml_context &&
440 (nb = fread (buff, sizeof(gchar), BUFSIZ, file)) > 0)
442 if (!g_markup_parse_context_parse(xml_context, buff, nb, &error))
444 fprintf(stderr, "%s: parsing error: %s.\n",
445 __FUNCTION__, error->message);
446 g_markup_parse_context_free(xml_context);
449 g_clear_error (&error);
453 !g_markup_parse_context_end_parse(xml_context, &error))
454 fprintf(stderr, "%s: errors occurred while reading file: %s.\n",
455 __FUNCTION__, error->message);
456 g_clear_error (&error);
459 g_markup_parse_context_free(xml_context);
468 if (isnan(priv->ll.lat) || isnan(priv->ll.lat))
469 /* At least one coordinate not found */
476 _goto_xml_tool_get_url_format ( VikGotoTool *self )
478 VikGotoXmlToolPrivate *priv = GOTO_XML_TOOL_GET_PRIVATE (self);
479 g_return_val_if_fail(priv != NULL, NULL);
480 return priv->url_format;