/* TimeZone.c - Native methods for java.util.TimeZone Copyright (C) 1999 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath 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, or (at your option) any later version. GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. As a special exception, if you link this library with other files to produce an executable, this library does not by itself cause the resulting executable to be covered by the GNU General Public License. This exception does not however invalidate any other reasons why the executable file might be covered by the GNU General Public License. */ #include #include #include #if TIME_WITH_SYS_TIME # include # include #else # if HAVE_SYS_TIME_H # include # else # include # endif #endif #include #include "config.h" #include "java_util_TimeZone.h" /* * This method returns a time zone string that is used by the static * initializer in java.util.TimeZone to create the default timezone * instance. This is a key into the timezone table used by * that class. */ JNIEXPORT jstring JNICALL Java_java_util_TimeZone_getDefaultTimeZoneId(JNIEnv *env, jclass clazz) { time_t current_time; char **tzinfo, *tzid; long tzoffset; jstring retval; current_time = time(0); mktime(localtime(¤t_time)); tzinfo = tzname; tzoffset = timezone; if ((tzoffset % 3600) == 0) tzoffset = tzoffset / 3600; if (!strcmp(tzinfo[0], tzinfo[1])) { tzid = (char*)malloc(strlen(tzinfo[0]) + 6); if (!tzid) return(0); sprintf(tzid, "%s%ld", tzinfo[0], tzoffset); } else { tzid = (char*)malloc(strlen(tzinfo[0]) + strlen(tzinfo[1]) + 6); if (!tzid) return(0); sprintf(tzid, "%s%ld%s", tzinfo[0], tzoffset, tzinfo[1]); } retval = (*env)->NewStringUTF(env, tzid); if (!retval) return(0); (*env)->NewGlobalRef(env, retval); return(retval); }