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//# AppInfo.cc: General information for applications
//# Copyright (C) 1996,1997,1998,2000,2002
//# Associated Universities, Inc. Washington DC, USA.
//#
//# 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 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: casa-feedback@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
#include <casacore/casa/System/AppInfo.h>
#include <casacore/casa/Arrays/Vector.h>
#include <casacore/casa/Arrays/MaskedArray.h>
#include <casacore/casa/System/Aipsrc.h>
#include <casacore/casa/System/AipsrcVector.h>
#include <casacore/casa/Utilities/Assert.h>
#include <casacore/casa/OS/Time.h>
#include <casacore/casa/OS/Memory.h>
#include <casacore/casa/Quanta/Unit.h>
#include <casacore/casa/Arrays/Vector.h>
#include <casacore/casa/OS/Directory.h>
#include <casacore/casa/Logging/LogIO.h>
#include <casacore/casa/iostream.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
Bool AppInfo::need_init_p = True;
uInt AppInfo::tz_r = 0;
Vector<String> AppInfo::workDirectories(uInt minimumFreeSpaceInMB)
{
static Bool init = False;
static uInt workdir = 0;
if (!init) {
init = True;
// Default is an empty vector
Vector<String> empty;
workdir = AipsrcVector<String>::registerRC("user.directories.work",
empty);
}
Vector<String> workdirs(AipsrcVector<String>::get(workdir).copy());
if (workdirs.nelements() == 0) {
// We haven't been given a work directory list, so use a sensible
// default. If "." exists and is writable use it, otherwise use "/tmp".
Directory dir(".");
if (!dir.exists() || !dir.isWritable()) {
dir = Directory("/tmp");
}
if (dir.exists() && dir.isWritable()) {
workdirs.resize(1);
workdirs(0) = dir.path().originalName();
}
}
// OK, elmiinate candidates (if any).
Vector<Bool> good(workdirs.nelements());
good = True;
for (uInt i=0; i<workdirs.nelements(); i++) {
File dir(workdirs(i));
if (!dir.exists() || !dir.isWritable() || !dir.isDirectory()) {
// Whinge if it's for an odd reason
LogIO os(LogOrigin("AppInfo", "workDirectories(uInt)", WHERE));
os << LogIO::WARN << "Work directory candidate '" <<
dir.path().originalName() << "' does not exist or is not" <<
" writable.\n" <<
"Check aipsrc variable user.directories.work." <<
LogIO::POST;
good(i) = False;
} else {
Directory asdir = dir;
if (asdir.freeSpace()/(1024*1024) < uLong(minimumFreeSpaceInMB)) {
good(i) = False;
}
}
}
// Compress the array
MaskedArray<String> masked(workdirs, good);
workdirs.resize(0);
workdirs = masked.getCompressedArray();
return workdirs;
}
String AppInfo::workDirectory(uInt minimumFreeSpaceInMB)
{
static uInt count = 0;
count++;
Vector<String> candidates = workDirectories(minimumFreeSpaceInMB);
if (candidates.nelements() == 0) {
LogIO os(LogOrigin("AppInfo", "workDirectory(uInt)", WHERE));
os << LogIO::SEVERE << "No work directory with at least " <<
minimumFreeSpaceInMB << "MB free can be found." << endl <<
"Check aipsrc variable user.directories.work." <<
LogIO::EXCEPTION;
}
return candidates((count-1) % candidates.nelements());
}
String AppInfo::workFileName(uInt minimumFreeSpaceInMB,
const String &filenamePrefix)
{
String dir = workDirectory(minimumFreeSpaceInMB);
return File::newUniqueName(dir, filenamePrefix).originalName();
}
void AppInfo::init() {
need_init_p = False;
// timezone
Double tz;
// Get System offset as default
tz_r = AipsrcValue<Double>::
registerRC("system.time.tzoffset", "h", "d", Time::timeZoneDays());
tz = AppInfo::timeZone();
// Do the asserts at the end so that all the variables are initialized as
// well as possible before throwing an exception.
AlwaysAssert(tz >= -0.625 && tz <= 0.625, AipsError);
}
} //# NAMESPACE CASACORE - END
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