*
************************************************************************/
+#ifdef HAVE_CONFIG_H
+# include <simgear_config.h>
+#endif
+
#include <errno.h>
#include <string.h>
#include <stdio.h>
+#include <cstdlib>
+
+#include <simgear/structure/exception.hxx>
+
#include "timezone.h"
-SGTimeZone::SGTimeZone(float la, float lo, char* cc, char* desc) :
- SGGeoCoord(la, lo)
+SGTimeZone::SGTimeZone(const SGGeod& geod, char* cc, char* desc) :
+ centerpoint(SGVec3d::fromGeod(geod))
{
countryCode = cc;
descriptor = desc;
}
/* Build a timezone object from a textline in zone.tab */
-SGTimeZone::SGTimeZone(const char *infoString) :
- SGGeoCoord()
+SGTimeZone::SGTimeZone(const char *infoString)
{
+ double lat = 0.0, lon = 0.0;
+
int i = 0;
while (infoString[i] != '\t')
i++;
strncpy(buffer, (&infoString[start]), size);
buffer[size] = 0;
descriptor = buffer;
+
+ centerpoint = SGVec3d::fromGeod(SGGeod::fromDeg(lon, lat));
}
/* the copy constructor */
SGTimeZone::SGTimeZone(const SGTimeZone& other)
{
- lat = other.getLat();
- lon = other.getLon();
+ centerpoint = other.centerpoint;
countryCode = other.countryCode;
descriptor = other.descriptor;
}
char buffer[256];
FILE* infile = fopen(filename, "rb");
if (!(infile)) {
- fprintf(stderr, "Unable to open file %s\n", filename);
- exit(1);
- } else {
- errno = 0;
+ std::string e = "Unable to open time zone file '";
+ throw sg_exception(e + filename + '\'');
+ }
- while (1) {
- fgets(buffer, 256, infile);
- if (feof(infile)) {
+ 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;
- }
- for (char *p = buffer; *p; p++) {
- if (*p == '#') {
- *p = 0;
- break;
- }
- }
- if (buffer[0]) {
- data.push_back(new SGTimeZone(buffer));
- }
+ }
}
- if ( errno ) {
- perror( "SGTimeZoneContainer()" );
- errno = 0;
+ if (buffer[0]) {
+ zones.push_back(new SGTimeZone(buffer));
}
}
+ if ( errno ) {
+ perror( "SGTimeZoneContainer()" );
+ errno = 0;
+ }
+
fclose(infile);
}
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;
+}
+