/*
* e-summary-weather.c
*
* Copyright (C) 2001 Ximian, Inc.
*
* Authors: Iain Holmes <iain@ximian.com>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <glib.h>
#include <gtk/gtkctree.h>
#include <gtk/gtkmain.h>
#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-config.h>
#include <gal/widgets/e-unicode.h>
#include <libgnomevfs/gnome-vfs.h>
#include "e-summary.h"
#include "e-summary-weather.h"
#include "weather.h"
#include "metar.h"
struct _ESummaryWeather {
ESummaryConnection *connection;
GList *weathers;
char *html;
guint32 timeout;
gboolean online;
gboolean errorshown;
};
static GHashTable *locations_hash = NULL;
char *
e_summary_weather_get_html (ESummary *summary)
{
GList *weathers;
GString *string;
char *html;
char *s;
if (summary->weather == NULL) {
return NULL;
}
string = g_string_new ("<dl><img src=\"ico-weather.png\" align=\"middle\" "
"alt=\"\" width=\"48\" height=\"48\"><b>"
"<a href=\"http://www.metoffice.gov.uk\">");
s = e_utf8_from_locale_string (_("My Weather"));
g_string_append (string, s);
g_free (s);
g_string_append (string, "</a></b>");
for (weathers = summary->weather->weathers; weathers; weathers = weathers->next) {
if (((Weather *)weathers->data)->html == NULL) {
continue;
}
g_string_append (string, ((Weather *)weathers->data)->html);
}
g_string_append (string, "</dl>");
html = string->str;
g_string_free (string, FALSE);
return html;
}
static char *
make_url (const char *code)
{
return g_strdup_printf ("http://weather.noaa.gov/cgi-bin/mgetmetar.pl?cccc=%s", code);
}
static char *
make_anchor (const char *name, const char *code)
{
char *url, *anchor;
url = make_url (code);
anchor = g_strdup_printf ("<a href=\"%s\">%s</a>", url, name);
g_free (url);
return anchor;
}
static void
weather_make_html (Weather *w)
{
GString *string;
ESummaryWeatherLocation *location;
char *sky, *temp, *cond, *s;
const char *icon_name;
icon_name = icon_from_weather (w);
string = g_string_new ("");
g_string_sprintf (string, "<dd><img align=\"middle\" "
"src=\"%s\"> <b>", icon_name);
location = g_hash_table_lookup (locations_hash, w->location);
#if 0
if (location == NULL) {
url = make_anchor (w->location, w->location);
} else {
url = make_anchor (location->name, w->location);
}
#endif
if (location == NULL) {
g_string_append (string, w->location);
} else {
g_string_append (string, location->name);
}
#if 0
g_string_append (string, url);
g_free (url);
#endif
g_string_append (string, "</b>:<blockquote><font size=\"-1\">");
sky = (char *) weather_sky_string (w);
temp = weather_temp_string (w);
cond = (char *) weather_conditions_string (w);
s = e_utf8_from_locale_string (sky);
g_string_append (string, s);
g_free (s);
g_string_append_c (string, ' ');
s = e_utf8_from_locale_string (cond);
g_string_append (string, s);
g_free (s);
g_string_append_c (string, ' ');
s = e_utf8_from_locale_string (temp);
g_string_append (string, s);
g_free (s);
g_free (temp);
#if 0
g_string_append (string, "<font size=\"-1\">");
uri = g_strdup_printf ("<a href=\"weather://%p\">", w);
g_string_append (string, uri);
g_free (uri);
g_string_append (string, "(More)</a></font></font></blockquote></dd>");
#else
g_string_append (string, "</font></blockquote></dd>");
#endif
if (w->html != NULL) {
g_free (w->html);
}
w->html = string->str;
g_string_free (string, FALSE);
e_summary_draw (w->summary);
}
static ESummaryWeatherLocation *
weather_location_new (char **locdata)
{
ESummaryWeatherLocation *location;
location = g_new (ESummaryWeatherLocation, 1);
location->name = g_strdup (locdata[0]);
location->code = g_strdup (locdata[1]);
location->zone = g_strdup (locdata[2]);
location->radar = g_strdup (locdata[3]);
return location;
}
static void
parse_metar_token (const char *token,
gboolean in_comment,
Weather *w)
{
if (in_comment == FALSE) {
if (metar_tok_time ((char *) token, w)) {
return;
} else if (metar_tok_wind ((char *) token, w)) {
return;
} else if (metar_tok_vis ((char *) token, w)) {
return;
} else if (metar_tok_cloud ((char *) token, w)) {
return;
} else if (metar_tok_temp ((char *) token, w)) {
return;
} else if (metar_tok_pres ((char *) token, w)) {
return;
} else if (metar_tok_cond ((char *) token, w)) {
return;
}
}
}
static void
parse_metar (const char *metar,
Weather *w)
{
char *metar_dup;
char **toks;
gint ntoks;
gint i;
gboolean in_remark = FALSE;
metar_dup = g_strdup (metar + 6);
metar_init_re ();
toks = g_strsplit (metar, " ", 0);
for (ntoks = 0; toks[ntoks]; ntoks++) {
if (strcmp (toks[ntoks], "RMK") == 0) {
in_remark = TRUE;
}
}
for (i = ntoks - 1; i >= 0; i--) {
if (*toks[i] != '\0') {
if (strcmp (toks[i], "RMK") == 0) {
in_remark = FALSE;
} else {
parse_metar_token (toks[i], in_remark, w);
}
}
}
g_strfreev (toks);
g_free (metar_dup);
weather_make_html (w);
}
static void
close_callback (GnomeVFSAsyncHandle *handle,
GnomeVFSResult result,
Weather *w)
{
ESummary *summary;
char *html, *metar, *end;
char *search_str;
summary = w->summary;
if (summary->weather->connection->callback) {
ESummaryConnection *connection = summary->weather->connection;
connection->callback (summary, connection->callback_closure);
}
if (w->handle == NULL) {
g_free (w->buffer);
w->buffer = NULL;
g_string_free (w->string, TRUE);
w->string = NULL;
return;
}
w->handle = NULL;
g_free (w->buffer);
w->buffer = NULL;
html = w->string->str;
g_string_free (w->string, FALSE);
w->string = NULL;
/* Find the metar data */
search_str = g_strdup_printf ("\n%s", w->location);
metar = strstr (html, search_str);
if (metar == NULL) {
g_free (search_str);
g_free (html);
return;
}
metar++;
end = strchr (metar, '\n');
if (end == NULL) {
g_free (search_str);
g_free (html);
return;
}
*end = '\0';
parse_metar (metar, w);
g_free (html);
g_free (search_str);
return;
}
static void
read_callback (GnomeVFSAsyncHandle *handle,
GnomeVFSResult result,
gpointer buffer,
GnomeVFSFileSize bytes_requested,
GnomeVFSFileSize bytes_read,
Weather *w)
{
if (result != GNOME_VFS_OK && result != GNOME_VFS_ERROR_EOF) {
if (w->summary->weather->errorshown == FALSE) {
w->html = g_strdup ("<dd><b>An error occurred while downloading weather data</b></dd>");
w->summary->weather->errorshown = TRUE;
} else {
w->html = g_strdup ("<dd> </dd>");
}
e_summary_draw (w->summary);
w->handle = NULL;
gnome_vfs_async_close (handle,
(GnomeVFSAsyncCloseCallback) close_callback, w);
return;
}
if (bytes_read == 0) {
gnome_vfs_async_close (handle,
(GnomeVFSAsyncCloseCallback) close_callback, w);
} else {
*((char *) buffer + bytes_read) = 0;
g_string_append (w->string, (const char *) buffer);
gnome_vfs_async_read (handle, buffer, 4095,
(GnomeVFSAsyncReadCallback) read_callback, w);
}
}
static void
open_callback (GnomeVFSAsyncHandle *handle,
GnomeVFSResult result,
Weather *w)
{
if (result != GNOME_VFS_OK) {
if (w->summary->weather->errorshown == FALSE) {
w->html = e_utf8_from_locale_string (_("<dd><b>The weather server could not be contacted</b></dd>"));
w->summary->weather->errorshown = TRUE;
} else {
w->html = g_strdup ("<dd> </dd>");
}
e_summary_draw (w->summary);
return;
}
w->string = g_string_new ("");
w->buffer = g_new (char, 4096);
gnome_vfs_async_read (handle, w->buffer, 4095,
(GnomeVFSAsyncReadCallback) read_callback, w);
}
static void
e_summary_weather_update (ESummary *summary)
{
GList *w;
summary->weather->errorshown = FALSE;
for (w = summary->weather->weathers; w; w = w->next) {
char *uri;
Weather *weather = w->data;
uri = g_strdup_printf ("http://weather.noaa.gov/cgi-bin/mgetmetar.pl?cccc=%s", weather->location);
gnome_vfs_async_open (&weather->handle, uri, GNOME_VFS_OPEN_READ,
(GnomeVFSAsyncOpenCallback) open_callback, weather);
g_free (uri);
}
}
static void
weather_free (Weather *w)
{
g_return_if_fail (w != NULL);
if (w->handle != NULL) {
gnome_vfs_async_cancel (w->handle);
}
if (w->string) {
g_string_free (w->string, TRUE);
}
if (w->buffer) {
g_free (w->buffer);
}
g_free (w->location);
g_free (w->html);
g_free (w);
}
static void
e_summary_weather_add_location (ESummary *summary,
const char *location)
{
Weather *w;
w = g_new0 (Weather, 1);
w->summary = summary;
w->location = g_strdup (location);
summary->weather->weathers = g_list_prepend (summary->weather->weathers, w);
}
static gboolean
e_summary_weather_init_locations (void)
{
char *key, *path;
int nregions, iregions;
char **regions;
if (locations_hash != NULL) {
return TRUE;
}
locations_hash = g_hash_table_new (g_str_hash, g_str_equal);
path = g_strdup (EVOLUTION_DATADIR "/evolution/Locations");
key = g_strdup_printf ("=%s=/", path);
g_free (path);
gnome_config_push_prefix (key);
g_free (key);
gnome_config_get_vector ("Main/regions", &nregions, ®ions);
for (iregions = nregions - 1; iregions >= 0; iregions--) {
int nstates, istates;
char **states;
char *region_name;
char *region_name_key;
char *states_key;
region_name_key = g_strconcat (regions[iregions], "/name", NULL);
states_key = g_strconcat (regions[iregions], "/states", NULL);
region_name = gnome_config_get_string (region_name_key);
gnome_config_get_vector (states_key, &nstates, &states);
for (istates = nstates - 1; istates >= 0; istates--) {
void *iter;
char *iter_key, *iter_val;
char *state_path, *state_name_key, *state_name;
state_path = g_strconcat (regions[iregions], "_", states[istates], "/", NULL);
state_name_key = g_strconcat (state_path, "name", NULL);
state_name = gnome_config_get_string (state_name_key);
iter = gnome_config_init_iterator (state_path);
while ((iter = gnome_config_iterator_next (iter, &iter_key, &iter_val)) != NULL) {
if (strstr (iter_key, "loc") != NULL) {
char **locdata;
int nlocdata;
ESummaryWeatherLocation *location;
gnome_config_make_vector (iter_val,
&nlocdata,
&locdata);
g_return_val_if_fail (nlocdata == 4, FALSE);
if (!g_hash_table_lookup (locations_hash, locdata[1])) {
location = weather_location_new (locdata);
g_hash_table_insert (locations_hash,
g_strdup (locdata[1]),
location);
}
g_strfreev (locdata);
}
g_free (iter_key);
g_free (iter_val);
}
g_free (state_name);
g_free (state_path);
g_free (state_name_key);
}
g_strfreev (states);
g_free (region_name);
g_free (region_name_key);
g_free (states_key);
}
g_strfreev (regions);
gnome_config_pop_prefix ();
return TRUE;
}
static void
e_summary_weather_protocol (ESummary *summary,
const char *uri,
void *closure)
{
}
static int
e_summary_weather_count (ESummary *summary,
void *data)
{
ESummaryWeather *weather;
GList *p;
int count = 0;
weather = summary->weather;
for (p = weather->weathers; p; p = p->next) {
Weather *w = p->data;
if (w->handle != NULL) {
count++;
}
}
return count;
}
static ESummaryConnectionData *
make_connection (Weather *w)
{
ESummaryConnectionData *data;
data = g_new (ESummaryConnectionData, 1);
data->hostname = make_url (w->location);
data->type = g_strdup (_("Weather"));
return data;
}
static GList *
e_summary_weather_add (ESummary *summary,
void *data)
{
ESummaryWeather *weather;
GList *p, *connections = NULL;
weather = summary->weather;
for (p = weather->weathers; p; p = p->next) {
Weather *w = p->data;
if (w->handle != NULL) {
ESummaryConnectionData *d;
d = make_connection (w);
connections = g_list_prepend (connections, d);
}
}
return connections;
}
static void
e_summary_weather_set_online (ESummary *summary,
GNOME_Evolution_OfflineProgressListener listener,
gboolean online,
void *data)
{
ESummaryWeather *weather;
weather = summary->weather;
if (weather->online == online) {
return;
}
if (online == TRUE) {
e_summary_weather_update (summary);
weather->timeout = gtk_timeout_add (summary->preferences->weather_refresh_time * 1000,
(GtkFunction) e_summary_weather_update,
summary);
} else {
gtk_timeout_remove (weather->timeout);
weather->timeout = 0;
}
weather->online = online;
}
void
e_summary_weather_init (ESummary *summary)
{
ESummaryPrefs *prefs;
ESummaryWeather *weather;
ESummaryConnection *connection;
int timeout;
g_return_if_fail (summary != NULL);
g_return_if_fail (IS_E_SUMMARY (summary));
if (e_summary_weather_init_locations () == FALSE) {
return;
}
prefs = summary->preferences;
weather = g_new0 (ESummaryWeather, 1);
weather->online = TRUE;
summary->weather = weather;
connection = g_new (ESummaryConnection, 1);
connection->count = e_summary_weather_count;
connection->add = e_summary_weather_add;
connection->set_online = e_summary_weather_set_online;
connection->closure = NULL;
connection->callback = NULL;
connection->callback_closure = NULL;
weather->connection = connection;
e_summary_add_online_connection (summary, connection);
e_summary_add_protocol_listener (summary, "weather", e_summary_weather_protocol, weather);
if (prefs == NULL) {
/* translators: Put here a list of codes for locations you want to
see in My Evolution by default. You can find the list of all
stations and their codes in Evolution sources
(evolution/my-evolution/Locations) */
char *default_stations = _("KBOS:ZSAM:EGAA"), **stations_v, **p;
stations_v = g_strsplit (default_stations, ":", 0);
g_assert (stations_v != NULL);
for (p = stations_v; *p != NULL; p++) {
e_summary_weather_add_location (summary, *p);
}
g_strfreev (stations_v);
timeout = 600;
} else {
GList *p;
for (p = prefs->stations; p; p = p->next) {
e_summary_weather_add_location (summary, p->data);
}
timeout = prefs->weather_refresh_time;
}
e_summary_weather_update (summary);
weather->timeout = gtk_timeout_add (timeout * 1000,
(GtkFunction) e_summary_weather_update,
summary);
return;
}
const char *
e_summary_weather_code_to_name (const char *code)
{
ESummaryWeatherLocation *location;
if (locations_hash == NULL) {
if (e_summary_weather_init_locations () == FALSE) {
return code;
}
}
location = g_hash_table_lookup (locations_hash, code);
if (location == NULL) {
return code;
} else {
return location->name;
}
}
void
e_summary_weather_ctree_fill (GtkCTree *tree)
{
GtkCTreeNode *region, *state, *location, *pref_loc_root;
char *key, *path;
int nregions, iregions;
char **regions, *pp[1];
path = g_strdup (EVOLUTION_DATADIR "/evolution/Locations");
key = g_strdup_printf ("=%s=/", path);
g_free (path);
gnome_config_push_prefix (key);
g_free (key);
pp[0] = _("Regions");
pref_loc_root = gtk_ctree_insert_node (tree, NULL, NULL, pp, 0,
NULL, NULL, NULL, NULL,
FALSE, TRUE);
gnome_config_get_vector ("Main/regions", &nregions, ®ions);
region = NULL;
for (iregions = nregions - 1; iregions >= 0; iregions--) {
int nstates, istates;
char **states;
char *region_name;
char *region_name_key;
char *states_key;
region_name_key = g_strconcat (regions[iregions], "/name", NULL);
states_key = g_strconcat (regions[iregions], "/states", NULL);
region_name = gnome_config_get_string (region_name_key);
pp[0] = region_name;
region = gtk_ctree_insert_node (tree, pref_loc_root,
region, pp, 0, NULL,
NULL, NULL, NULL,
FALSE, FALSE);
gnome_config_get_vector (states_key, &nstates, &states);
state = NULL;
for (istates = nstates - 1; istates >= 0; istates--) {
void *iter;
char *iter_key, *iter_val;
char *state_path, *state_name_key, *state_name;
state_path = g_strconcat (regions[iregions], "_", states[istates], "/", NULL);
state_name_key = g_strconcat (state_path, "name", NULL);
state_name = gnome_config_get_string (state_name_key);
pp[0] = state_name;
state = gtk_ctree_insert_node (tree, region,
state, pp, 0,
NULL, NULL,
NULL, NULL,
FALSE, FALSE);
location = NULL;
iter = gnome_config_init_iterator (state_path);
while ((iter = gnome_config_iterator_next (iter, &iter_key, &iter_val)) != NULL) {
if (strstr (iter_key, "loc") != NULL) {
char **locdata;
int nlocdata;
ESummaryWeatherLocation *w_location;
gnome_config_make_vector (iter_val,
&nlocdata,
&locdata);
g_return_if_fail (nlocdata == 4);
pp[0] = locdata[0];
location = gtk_ctree_insert_node (tree, state, location, pp, 0,
NULL, NULL, NULL, NULL, FALSE, TRUE);
w_location = g_hash_table_lookup (locations_hash, locdata[1]);
gtk_ctree_node_set_row_data (tree, location, w_location);
g_strfreev (locdata);
}
g_free (iter_key);
g_free (iter_val);
}
g_free (state_name);
g_free (state_path);
g_free (state_name_key);
}
g_strfreev (states);
g_free (region_name);
g_free (region_name_key);
g_free (states_key);
}
g_strfreev (regions);
gnome_config_pop_prefix ();
return;
}
void
e_summary_weather_reconfigure (ESummary *summary)
{
ESummaryWeather *weather;
GList *old, *p;
g_return_if_fail (summary != NULL);
g_return_if_fail (IS_E_SUMMARY (summary));
weather = summary->weather;
/* Stop timeout so it doesn't occur while we're changing stuff*/
gtk_timeout_remove (weather->timeout);
for (old = weather->weathers; old; old = old->next) {
Weather *w;
w = old->data;
weather_free (w);
}
g_list_free (weather->weathers);
weather->weathers = NULL;
for (p = summary->preferences->stations; p; p = p->next) {
e_summary_weather_add_location (summary, p->data);
}
weather->timeout = gtk_timeout_add (summary->preferences->weather_refresh_time * 1000,
(GtkFunction) e_summary_weather_update, summary);
e_summary_weather_update (summary);
}
void
e_summary_weather_free (ESummary *summary)
{
ESummaryWeather *weather;
GList *p;
g_return_if_fail (summary != NULL);
g_return_if_fail (IS_E_SUMMARY (summary));
weather = summary->weather;
if (weather->timeout != 0) {
gtk_timeout_remove (weather->timeout);
}
for (p = weather->weathers; p; p = p->next) {
Weather *w = p->data;
weather_free (w);
}
g_list_free (weather->weathers);
g_free (weather->html);
e_summary_remove_online_connection (summary, weather->connection);
g_free (weather->connection);
g_free (weather);
summary->weather = NULL;
}