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diff --git a/gcc-4.2.1/libjava/classpath/vm/reference/java/util/VMTimeZone.java b/gcc-4.2.1/libjava/classpath/vm/reference/java/util/VMTimeZone.java
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-/* java.util.VMTimeZone
- Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
- 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., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package java.util;
-
-import gnu.classpath.Configuration;
-
-import java.io.*;
-
-/**
- *
- */
-final class VMTimeZone
-{
- static
- {
- if (Configuration.INIT_LOAD_LIBRARY)
- {
- System.loadLibrary("javautil");
- }
- }
-
- /**
- * This method returns a time zone id string which is in the form
- * (standard zone name) or (standard zone name)(GMT offset) or
- * (standard zone name)(GMT offset)(daylight time zone name). The
- * GMT offset can be in seconds, or where it is evenly divisible by
- * 3600, then it can be in hours. The offset must be the time to
- * add to the local time to get GMT. If a offset is given and the
- * time zone observes daylight saving then the (daylight time zone
- * name) must also be given (otherwise it is assumed the time zone
- * does not observe any daylight savings).
- * <p>
- * The result of this method is given to the method
- * TimeZone.getDefaultTimeZone(String) which tries to map the time
- * zone id to a known TimeZone. See that method on how the returned
- * String is mapped to a real TimeZone object.
- * <p>
- * The reference implementation which is made for GNU/Posix like
- * systems calls <code>System.getenv("TZ")</code>,
- * <code>readTimeZoneFile("/etc/timezone")</code>,
- * <code>readtzFile("/etc/localtime")</code> and finally
- * <code>getSystemTimeZoneId()</code> till a supported TimeZone is
- * found through <code>TimeZone.getDefaultTimeZone(String)</code>.
- * If every method fails <code>null</code> is returned (which means
- * the TimeZone code will fall back on GMT as default time zone).
- * <p>
- * Note that this method is called inside a
- * <code>AccessController.doPrivileged()</code> block and runs with
- * the priviliges of the java.util system classes. It will only be
- * called when the default time zone is not yet set, the system
- * property user.timezone isn't set and it is requested for the
- * first time.
- */
- static TimeZone getDefaultTimeZoneId()
- {
- TimeZone zone = null;
-
- // See if TZ environment variable is set and accessible.
- String tzid = System.getenv("TZ");
- if (tzid != null && !tzid.equals(""))
- zone = TimeZone.getDefaultTimeZone(tzid);
-
- // Try to parse /etc/timezone.
- if (zone == null)
- {
- tzid = readTimeZoneFile("/etc/timezone");
- if (tzid != null && !tzid.equals(""))
- zone = TimeZone.getDefaultTimeZone(tzid);
- }
-
- // Try to parse /etc/localtime
- if (zone == null)
- {
- tzid = readtzFile("/etc/localtime");
- if (tzid != null && !tzid.equals(""))
- zone = TimeZone.getDefaultTimeZone(tzid);
- }
-
- // Try some system specific way
- if (zone == null)
- {
- tzid = getSystemTimeZoneId();
- if (tzid != null && !tzid.equals(""))
- zone = TimeZone.getDefaultTimeZone(tzid);
- }
-
- return zone;
- }
-
- /**
- * Tries to read the time zone name from a file. Only the first
- * consecutive letters, digits, slashes, dashes and underscores are
- * read from the file. If the file cannot be read or an IOException
- * occurs null is returned.
- * <p>
- * The /etc/timezone file is not standard, but a lot of systems have
- * it. If it exist the first line always contains a string
- * describing the timezone of the host of domain. Some systems
- * contain a /etc/TIMEZONE file which is used to set the TZ
- * environment variable (which is checked before /etc/timezone is
- * read).
- */
- private static String readTimeZoneFile(String file)
- {
- File f = new File(file);
- if (!f.exists())
- return null;
-
- InputStreamReader isr = null;
- try
- {
- FileInputStream fis = new FileInputStream(f);
- BufferedInputStream bis = new BufferedInputStream(fis);
- isr = new InputStreamReader(bis);
-
- StringBuffer sb = new StringBuffer();
- int i = isr.read();
- while (i != -1)
- {
- char c = (char) i;
- if (Character.isLetter(c) || Character.isDigit(c)
- || c == '/' || c == '-' || c == '_')
- {
- sb.append(c);
- i = isr.read();
- }
- else
- break;
- }
- return sb.toString();
- }
- catch (IOException ioe)
- {
- // Parse error, not a proper tzfile.
- return null;
- }
- finally
- {
- try
- {
- if (isr != null)
- isr.close();
- }
- catch (IOException ioe)
- {
- // Error while close, nothing we can do.
- }
- }
- }
-
- /**
- * Tries to read a file as a "standard" tzfile and return a time
- * zone id string as expected by <code>getDefaultTimeZone(String)</code>.
- * If the file doesn't exist, an IOException occurs or it isn't a tzfile
- * that can be parsed null is returned.
- * <p>
- * The tzfile structure (as also used by glibc) is described in the Olson
- * tz database archive as can be found at
- * <code>ftp://elsie.nci.nih.gov/pub/</code>.
- * <p>
- * At least the following platforms support the tzdata file format
- * and /etc/localtime (GNU/Linux, Darwin, Solaris and FreeBSD at
- * least). Some systems (like Darwin) don't start the file with the
- * required magic bytes 'TZif', this implementation can handle
- * that).
- */
- private static String readtzFile(String file)
- {
- File f = new File(file);
- if (!f.exists())
- return null;
-
- DataInputStream dis = null;
- try
- {
- FileInputStream fis = new FileInputStream(f);
- BufferedInputStream bis = new BufferedInputStream(fis);
- dis = new DataInputStream(bis);
-
- // Make sure we are reading a tzfile.
- byte[] tzif = new byte[4];
- dis.readFully(tzif);
- if (tzif[0] == 'T' && tzif[1] == 'Z'
- && tzif[2] == 'i' && tzif[3] == 'f')
- // Reserved bytes, ttisgmtcnt, ttisstdcnt and leapcnt
- skipFully(dis, 16 + 3 * 4);
- else
- // Darwin has tzdata files that don't start with the TZif marker
- skipFully(dis, 16 + 3 * 4 - 4);
-
- int timecnt = dis.readInt();
- int typecnt = dis.readInt();
- if (typecnt > 0)
- {
- int charcnt = dis.readInt();
- // Transition times plus indexed transition times.
- skipFully(dis, timecnt * (4 + 1));
-
- // Get last gmt_offset and dst/non-dst time zone names.
- int abbrind = -1;
- int dst_abbrind = -1;
- int gmt_offset = 0;
- while (typecnt-- > 0)
- {
- // gmtoff
- int offset = dis.readInt();
- int dst = dis.readByte();
- if (dst == 0)
- {
- abbrind = dis.readByte();
- gmt_offset = offset;
- }
- else
- dst_abbrind = dis.readByte();
- }
-
- // gmt_offset is the offset you must add to UTC/GMT to
- // get the local time, we need the offset to add to
- // the local time to get UTC/GMT.
- gmt_offset *= -1;
-
- // Turn into hours if possible.
- if (gmt_offset % 3600 == 0)
- gmt_offset /= 3600;
-
- if (abbrind >= 0)
- {
- byte[] names = new byte[charcnt];
- dis.readFully(names);
- int j = abbrind;
- while (j < charcnt && names[j] != 0)
- j++;
-
- String zonename = new String(names, abbrind, j - abbrind,
- "ASCII");
-
- String dst_zonename;
- if (dst_abbrind >= 0)
- {
- j = dst_abbrind;
- while (j < charcnt && names[j] != 0)
- j++;
- dst_zonename = new String(names, dst_abbrind,
- j - dst_abbrind, "ASCII");
- }
- else
- dst_zonename = "";
-
- // Only use gmt offset when necessary.
- // Also special case GMT+/- timezones.
- String offset_string;
- if ("".equals(dst_zonename)
- && (gmt_offset == 0
- || zonename.startsWith("GMT+")
- || zonename.startsWith("GMT-")))
- offset_string = "";
- else
- offset_string = Integer.toString(gmt_offset);
-
- String id = zonename + offset_string + dst_zonename;
-
- return id;
- }
- }
-
- // Something didn't match while reading the file.
- return null;
- }
- catch (IOException ioe)
- {
- // Parse error, not a proper tzfile.
- return null;
- }
- finally
- {
- try
- {
- if (dis != null)
- dis.close();
- }
- catch(IOException ioe)
- {
- // Error while close, nothing we can do.
- }
- }
- }
-
- /**
- * Skips the requested number of bytes in the given InputStream.
- * Throws EOFException if not enough bytes could be skipped.
- * Negative numbers of bytes to skip are ignored.
- */
- private static void skipFully(InputStream is, long l) throws IOException
- {
- while (l > 0)
- {
- long k = is.skip(l);
- if (k <= 0)
- throw new EOFException();
- l -= k;
- }
- }
-
- /**
- * Tries to get the system time zone id through native code.
- */
- private static native String getSystemTimeZoneId();
-}
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