* timezone.cc
* Written by Durk Talsma. Started July 1999.
*
- * 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 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * This library 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.
+ * Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
**************************************************************************/
/*************************************************************************
*
- * Timezone is derived from geocoord, and stores the timezone centerpoint,
+ * SGTimeZone is derived from geocoord, and stores the timezone centerpoint,
* as well as the countrycode and the timezone descriptor. The latter is
* used in order to get the local time.
*
************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include <simgear_config.h>
+#endif
+
+#include <errno.h>
+#include <string.h>
#include <stdio.h>
-#include "timezone.h"
+#include <cstdlib>
+#include <simgear/structure/exception.hxx>
+
+#include "timezone.h"
-Timezone::Timezone(float la, float lo, char* cc, char* desc) :
- GeoCoord(la, lo)
+SGTimeZone::SGTimeZone(const SGGeod& geod, char* cc, char* desc) :
+ centerpoint(SGVec3d::fromGeod(geod))
{
- countryCode = strdup(cc);
- descriptor = strdup(desc);
+ countryCode = cc;
+ descriptor = desc;
}
/* Build a timezone object from a textline in zone.tab */
-Timezone::Timezone(const char *infoString) :
- GeoCoord()
+SGTimeZone::SGTimeZone(const char *infoString)
{
- int i = 0;
- while (infoString[i] != '\t')
- i++;
- char buffer[128];
- char latlon[128];
- strncpy(buffer, infoString, i);
- buffer[i] = 0;
- countryCode = strdup(buffer);
- i ++;
- int start = i;
- while (infoString[i] != '\t')
- i++;
- int size = i - start;
- strncpy(latlon, (&infoString[start]), size);
- latlon[size] = 0;
- char sign;
- sign = latlon[0];
- strncpy(buffer, &latlon[1], 2);
- lat = atof(buffer);
- strncpy(buffer, &latlon[3], 2);
- lat += (atof(buffer) / 60);
- int nextPos;
- if (strlen(latlon) > 12)
- {
- nextPos = 7;
- strncpy(buffer, &latlon[5], 2);
- lat += (atof(buffer) / 3600.0);
+ double lat = 0.0, lon = 0.0;
+
+ int i = 0;
+ while (infoString[i] != '\t')
+ i++;
+ char buffer[128];
+ char latlon[128];
+ strncpy(buffer, infoString, i);
+ buffer[i] = 0;
+ countryCode = buffer;
+ i ++;
+ int start = i;
+ while (infoString[i] != '\t') {
+ i++;
}
- else
- nextPos = 5;
- if (sign == '-')
- lat = -lat;
-
- sign = latlon[nextPos];
- nextPos++;
- strncpy(buffer, &latlon[nextPos], 3);
- lon = atof(buffer);
- nextPos += 3;
- strncpy(buffer, &latlon[nextPos], 2);
- buffer[2] = 0;
+ int size = i - start;
+ strncpy(latlon, (&infoString[start]), size);
+ latlon[size] = 0;
+ char sign;
+ sign = latlon[0];
+ strncpy(buffer, &latlon[1], 2);
+ buffer[2] = 0;
+ lat = atof(buffer);
+ strncpy(buffer, &latlon[3], 2);
+ buffer[2] = 0;
+ lat += (atof(buffer) / 60);
+ int nextPos;
+ if (strlen(latlon) > 12) {
+ nextPos = 7;
+ strncpy(buffer, &latlon[5], 2);
+ buffer[2] = 0;
+ lat += (atof(buffer) / 3600.0);
+ } else {
+ nextPos = 5;
+ }
+ if (sign == '-') {
+ lat = -lat;
+ }
+
+ sign = latlon[nextPos];
+ nextPos++;
+ strncpy(buffer, &latlon[nextPos], 3);
+ buffer[3] = 0;
+ lon = atof(buffer);
+ nextPos += 3;
+ strncpy(buffer, &latlon[nextPos], 2);
+ buffer[2] = 0;
- lon += (atof(buffer) / 60);
- if (strlen(latlon) > 12)
- {
- nextPos += 2;
- strncpy(buffer, &latlon[nextPos], 2);
- lon += (atof (buffer) / 3600.00);
+ lon += (atof(buffer) / 60);
+ if (strlen(latlon) > 12) {
+ nextPos += 2;
+ strncpy(buffer, &latlon[nextPos], 2);
+ buffer[2] = 0;
+ lon += (atof (buffer) / 3600.00);
+ }
+ if (sign == '-') {
+ lon = -lon;
}
- if (sign == '-')
- lon = -lon;
- i ++;
- start = i;
- while (!((infoString[i] == '\t') || (infoString[i] == '\n')))
- i++;
- size = i - start;
- strncpy(buffer, (&infoString[start]), size);
- buffer[size] = 0;
- descriptor = strdup(buffer);
+ i ++;
+ start = i;
+ while (!((infoString[i] == '\t') || (infoString[i] == '\n'))) {
+ i++;
+ }
+ size = i - start;
+ strncpy(buffer, (&infoString[start]), size);
+ buffer[size] = 0;
+ descriptor = buffer;
+
+ centerpoint = SGVec3d::fromGeod(SGGeod::fromDeg(lon, lat));
}
/* the copy constructor */
-Timezone::Timezone(const Timezone& other)
+SGTimeZone::SGTimeZone(const SGTimeZone& other)
{
- lat = other.getLat();
- lon = other.getLon();
- countryCode = strdup(other.countryCode);
- descriptor = strdup(other.descriptor);
+ centerpoint = other.centerpoint;
+ countryCode = other.countryCode;
+ descriptor = other.descriptor;
}
-/********* Member functions for TimezoneContainer class ********/
+/********* Member functions for SGTimeZoneContainer class ********/
-TimezoneContainer::TimezoneContainer(const char *filename)
+SGTimeZoneContainer::SGTimeZoneContainer(const char *filename)
{
- char buffer[256];
- FILE* infile = fopen(filename, "r");
- if (!(infile))
- {
- fprintf(stderr, "Unable to open file %s\n", filename);
- exit(1);
+ char buffer[256];
+ FILE* infile = fopen(filename, "rb");
+ if (!(infile)) {
+ string e = "Unable to open time zone file '";
+ throw sg_exception(e + filename + '\'');
+ }
+
+ errno = 0;
+
+ while (1) {
+ if (0 == fgets(buffer, 256, infile))
+ break;
+ if (feof(infile)) {
+ break;
+ }
+ for (char *p = buffer; *p; p++) {
+ if (*p == '#') {
+ *p = 0;
+ break;
+ }
+ }
+ if (buffer[0]) {
+ zones.push_back(new SGTimeZone(buffer));
+ }
}
- else
- {
-
- while (1)
- {
- fgets(buffer, 256, infile);
- if (feof(infile))
- break;
- for (int i = 0; i < 256; i++)
- {
- if (buffer[i] == '#')
- buffer[i] = 0;
- }
- if (buffer[0])
- {
- data.push_back(new Timezone(buffer));
- }
- }
+ if ( errno ) {
+ perror( "SGTimeZoneContainer()" );
+ errno = 0;
}
+
+ fclose(infile);
}
-TimezoneContainer::~TimezoneContainer()
+SGTimeZoneContainer::~SGTimeZoneContainer()
{
+ TZVec::iterator it = zones.begin();
+ for (; it != zones.end(); ++it) {
+ delete *it;
+ }
}
+
+SGTimeZone* SGTimeZoneContainer::getNearest(const SGGeod& ref) const
+{
+ SGVec3d refCart(SGVec3d::fromGeod(ref));
+ SGTimeZone* match = NULL;
+ double minDist2 = HUGE_VAL;
+
+ TZVec::const_iterator it = zones.begin();
+ for (; it != zones.end(); ++it) {
+ double d2 = distSqr((*it)->cartCenterpoint(), refCart);
+ if (d2 < minDist2) {
+ match = *it;
+ minDist2 = d2;
+ }
+ }
+
+ return match;
+}
+
projects / simgear.git / blobdiff