perl/libs/shortcuts.pm

## ---------------------------------------------------------------------------
##  $Id: shortcuts.pm,v 1.15 2003/06/24 20:21:12 jonen Exp $
## ---------------------------------------------------------------------------
##  $Log: shortcuts.pm,v $
##  Revision 1.15  2003/06/24 20:21:12  jonen
##  + changed linux part of run_cmd to use Proc::Background instead of IPC::...
##
##  Revision 1.14  2003/06/24 20:13:18  joko
##  + sub findpatch
##  + now using findpatch and Proc::Background for win32/perl
##
##  Revision 1.13  2003/06/23 20:58:31  joko
##  restructured, hopefully makes Linux and Windows (and *BSD) more compatible...  what about IPC::Cmd???
##
##  Revision 1.12  2003/06/23 19:43:19  joko
##  minor cleanup
##  now using IPC::Session::NoShell
##
##  Revision 1.11  2003/06/23 17:41:50  jonen
##  + NEW - used IPC::Session instead of IPC::Run to get better results at linux
##
##  Revision 1.10  2003/06/23 15:59:16  joko
##  major/minor fixes?
##
##  Revision 1.9  2003/05/13 05:36:24  joko
##  heavy modifications to run_cmd
##  + sub get_executable
##  + sub get_executable_wrapper
##
##  Revision 1.8  2003/04/04 17:31:59  joko
##  + sub make_guid
##
##  Revision 1.7  2003/03/29 07:24:10  joko
##  enhanced 'run_cmd': now tries to execute program with appropriate application (e.g. 'cmd.exe' or 'perl')
##
##  Revision 1.6  2003/03/28 06:58:06  joko
##  new: 'run_cmd' now asynchronous! (via IPC::Run...)
##
##  Revision 1.5  2003/02/22 17:26:13  joko
##  + enhanced unix compatibility fix
##
##  Revision 1.4  2003/02/22 17:19:36  joko
##  + unix compatibility fix
##
##  Revision 1.3  2003/02/14 14:17:04  joko
##  - shortened seperator
##
##  Revision 1.2  2003/02/11 05:14:28  joko
##  + refactored code from libp.pm
##
##  Revision 1.1  2003/02/09 04:49:45  joko
##  + shortcuts now refactored to this file
##
## ---------------------------------------------------------------------------


package shortcuts;

use strict;
use warnings;

require Exporter;
our @ISA = qw( Exporter );
our @EXPORT_OK = qw( 
  strftime
  now today
  run_cmd run_cmds
  get_chomped
  bool2status
  make_guid
);


use Data::Dumper;
use POSIX qw( strftime );
#use IPC::Run qw( run timeout );
use IPC::Run qw( start pump finish timeout run timer ) ;
use Carp;

# NEW - 2003-06-23 for Linux (what about *BSD?)
use IPC::Session;

use File::Spec;
use Proc::Background;


# $now_string = strftime "%a %b %e %H:%M:%S %Y", localtime;
# see "perldoc -f localtime"
sub now {
  my $options = shift;
  my $pattern = "%Y-%m-%d %H:%M:%S";
  $pattern = "%Y-%m-%d_%H-%M-%S" if $options->{fs};
  my $result = strftime($pattern, localtime);
  return $result;
}

sub today {
  return strftime("%Y-%m-%d", localtime);
}

sub RUNNING_IN_HELL () { $^O eq 'MSWin32' }


sub get_executable {
  my $cmd = shift;
  # FIXME: detect type of program and run with proper application/interpreter
  # using IPC::Run we have to dispatch this on our own! *no* os-interaction or interpolation here!?
  # => better use absolute path-names only?!
  my $application = '';
  if ($cmd =~ m/\w+\.pl\s*.*/) {
      $application = get_interpreter_wrapper($cmd, 'perl');
      #$cmd = "$application $cmd" if $application;
      $application .= ' ';
    
  } else {
    $application = './';
  }
  return $application;
}

sub get_interpreter_wrapper {
  my $cmd = shift;
  my $language = shift;
  $language ||= '';

  my $wrapper = '';

  if ($language eq 'perl') {
  
    if (RUNNING_IN_HELL()) {
      # Required to adapt to IPC::Run on win32.
      #$wrapper = 'cmd.exe /C perl';
      #$wrapper = 'start perl';
      $wrapper = 'perl';
      #$wrapper = 'cmd.exe /C';
    } else {
      # NEW 2003-06-23 - needed if used with IPC::Session (at Linux)
      #  whats about Win32?
      $wrapper = 'perl';
    }
    
  } else {
    die("No wrapper for language '$language'.");
  }
  
  return $wrapper;
}


sub run_cmd {
  my $cmd = shift;
  my $caption = shift;
  my $options = shift;
  
  #print STDOUT "run_cmd - options: ", Dumper($options), "\n";
  
  # report - header
  my $sep = "-" x 60;
  print STDOUT $sep, "\n";
  print STDOUT "  ", $cmd;
  print STDOUT " - ", $caption if $caption;
  print STDOUT "\n", $sep, "\n";
  
  # strip name of executable from full command string
  $cmd =~ m/^(.+?)\s(.*)$/;
  my $executable = $1;
  my $executable_args = $2;
  
=pod
  # for unix: check if executable is in local directory, if so - prefix with './'
  if (!RUNNING_IN_HELL()) {
    #if ($cmd !~ m/\//) {
    if (-e $executable) {
    }
  }
=cut

  # new of 2003-05-07: basedir option to be prepended to command string
  my $basedir = $options->{BASEDIR};
  my $use_path = $options->{USE_PATH};

  # for all systems: check existance of files - use basedir if given, try current directory otherwise
  if ($basedir) {
    -e "$basedir/$executable" or die("$basedir/$executable does not exist.");
    $basedir .= '/';
    $cmd = "$basedir$cmd";
  } elsif ($use_path) {
    #$basedir = "";
    $basedir = findpath($executable);
    #print "basedir: $basedir", "\n";
    my $abspath = File::Spec->catfile($basedir, $executable);
    #print STDOUT "PATH: ", $abspath, "\n";
    -e $abspath or die("$abspath does not exist.");
    $cmd = $abspath . ' ' . $executable_args;
  } else {
    -e $executable or die("$executable does not exist.");
    #$basedir = ".";
    #$basedir .= './';
    $basedir = "";
    $cmd = "$basedir$cmd";
  }

  # V1 - backticks or qq{}
  #`$cmd`;
  #qq{$cmd};
  
  # V2 - via 'system'
  #system($cmd);

  #if (not $use_path) {
    my $application = get_executable($cmd);
    $cmd = "$application$cmd" if $application;
  #}

  my @cmd = split(' ', $cmd);

  # V3 - using IPC (optional)
  if ($options->{async}) {

    #run \@cmd, \$in, \$out, \$err, timeout( 10 ) or die "cat: $?";

    print STDOUT "run_cmd[async]: Proc::Background: $cmd", "\n";
    
    # V3.1 - using IPC::Run
    #
    # tests:
    
    if (RUNNING_IN_HELL()) {
    
      #my $in; my $out; my $err;
      
      #print STDOUT "findpath: ", findpath('rap.pl'), "\n";
      
      # no success!
      #start \@cmd, timeout(0) or croak("run_cmd: IPC::Run could not start '$cmd'.");
      #
      # success on Win32, but seems broken at 'timeout' on linux:
      #run(\@cmd, timeout(3)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
      #start(\@cmd, timer(2)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
      #start(\@cmd, \undef) or croak("run_cmd: IPC::Run could not start '$cmd'.");
      #start \@cmd or croak("run_cmd: IPC::Run could not start '$cmd'.");
      #start(\@cmd, timeout(1)) or croak("run_cmd: IPC::Run could not start '$cmd'.");      
          
      # other tests ;)
      #$IPC::Run::Timer::timeout = 2000;
      #start $cmd or die("IPC::Run could not start '$cmd'.");
      
      #my $in; my $out; my $t;
      #my $harness = start( \@cmd, \$in, \$out, $t = timer( 5 ) ) ;
      #my $harness = start( \@cmd ) ;
      #$harness->pump_nb();
      
      #my $postfix = '2>&1 |';
      #open PIPE, "$cmd $postfix" or die("run_cmd: could not run in background via open!");
      
      my $proc1 = Proc::Background->new(@cmd);
      print "pid: ", $proc1->pid(), "\n";

      
    } else {

      #print STDOUT "run_cmd: IPC::Session: $cmd", "\n";

      # V3.2 - using IPC::Session
      #  success on Linux AND Win32 ??
      #
      # set timeout:
      #  (don't really know why we needs some secconds
      #   to wait for init of process !?!)
      #my $session_timeout = 15;
      # set session name (default: cmd as string):
      #my $session_command = $cmd;
      #my $session_shell = "/bin/sh";
      # create session (beware of using '->new' here!?):
      #my $session = new IPC::Session($session_shell, $session_timeout);
      
      # send 'cmd' to session - not required since complete command is sent via constructor above
      #$session->send($cmd);

      #my $output = $session->stdout();
      #print "WS::Admin started.\n" if $output = ' ';

      # tests
      #$session->send("echo hello");
      #chomp(my $hello = $session->stdout());      
      #print "ok 3\n" if $hello eq "hello";
      
      # optional switch case:
      #for ($session->stdout()) {
      #  /_bootDataBases/ && do { print "WS::Admin started.\n" };
      #}
      # optional get error:
      #my $err = session->stderr();
      #print "ERR: " . Dumper($err) . "\n";

      #open( *OUT, ">out.txt" ) ;
      #open( *ERR, ">err.txt" ) ;
      #run(\@cmd, \undef,  \*OUT, \*ERR  ) or croak("run_cmd: IPC::Run could not start '$cmd'.");
      #my ($out, $err);
      #my $h = start(\@cmd, \undef,  \*OUT, \*ERR  ) or croak("run_cmd: IPC::Run could not start '$cmd'.");
      #finish $h if $err =~ /error/;
      
      # get child pid 
      #my $kid;
      #do { $kid=wait(); } until $kid > 0;
      #print "Child PID: " . $kid . "n";

      #finish $h;

      
      # test using Proc::Background - success !!
      my $proc = Proc::Background->new($cmd);
      my $kid = $proc->pid();
      print STDOUT "run_cmd: Proc::Background: $cmd, child PID $kid", "\n";
      $proc->wait();
      $proc->die();

    }


  } elsif ($options->{detach}) {

    if (RUNNING_IN_HELL()) {
      print STDOUT "run_cmd[detach]: Proc::Background: $cmd", "\n";
      my $proc1 = Proc::Background->new(@cmd);
      print "pid: ", $proc1->pid(), "\n";
    } else {
      print STDERR "run_cmd[detach]: system('$cmd' &).", "\n";
      system($cmd . ' &');    
    }

  } else {
    print STDOUT "run_cmd: system('$cmd').", "\n";
    system($cmd);
  }
  
  print STDOUT "run_cmd: ready.", "\n";
  
}

sub run_cmds {
  my $options = {};
  if (ref $_[$#_] eq 'HASH') {
    #print "YAI", "\n";
    $options = pop @_;
  }
  foreach (@_) {
    run_cmd($_, '', $options);
  }
}

sub get_chomped {
  my $str = shift;
  chomp($str);
  return $str;
}

sub bool2status {
  my $bool = shift;
  return ($bool ? 'ok' : 'failed');
}

# create global unique identifers using Data::UUID
# if updating this code, please also modify Tangram::Storage::make_guid
sub make_guid 
  {
    my $self = shift;

    my $guid;

    # try to use Data::UUID first ...
    eval("use Data::UUID;");
    if (!$@) {
      my $ug = Data::UUID->new();
      $guid = $ug->create_str();
      
    # ... if this fails, try to fallback to Data::UUID::PurePerl instead ...
    } else {
      eval("use Data::UUID::PurePerl;");
      if (!$@) {
        $guid = Data::UUID::PurePerl::generate_id();
      } else {
        croak "couldn't create globally unique identifier";
      }
    }
    
    return $guid;
  }

# [modified] from: http://www.mit.edu/afs/athena/contrib/watchmaker/src/pt/Configure
sub findpath {
    #local($path);
    #local($arg) = shift;
    my $arg = shift;
    my $path;
    #for my $dir (split(/:/,$ENV{'PATH'})) {
    for my $dir (File::Spec->path()) {
        #if (-x "$dir/$arg" && -f _) {
        #print STDOUT "scanning: ", "$dir/$arg", "\n";
        if (-e "$dir/$arg") {
            #$path = "$dir/$arg";
            #$path = "$dir/";
            $path = $dir;
            last;
        } 
    } 
    $path;
}

1;
__END__
1	joko	1.1	## ---------------------------------------------------------------------------
2	joko	1.16	## $Id: shortcuts.pm,v 1.15 2003/06/24 20:21:12 jonen Exp $
3	joko	1.1	## ---------------------------------------------------------------------------
4			## $Log: shortcuts.pm,v $
5	joko	1.16	## Revision 1.15 2003/06/24 20:21:12 jonen
6			## + changed linux part of run_cmd to use Proc::Background instead of IPC::...
7			##
8	jonen	1.15	## Revision 1.14 2003/06/24 20:13:18 joko
9			## + sub findpatch
10			## + now using findpatch and Proc::Background for win32/perl
11			##
12	joko	1.14	## Revision 1.13 2003/06/23 20:58:31 joko
13			## restructured, hopefully makes Linux and Windows (and *BSD) more compatible... what about IPC::Cmd???
14			##
15	joko	1.13	## Revision 1.12 2003/06/23 19:43:19 joko
16			## minor cleanup
17			## now using IPC::Session::NoShell
18			##
19	joko	1.12	## Revision 1.11 2003/06/23 17:41:50 jonen
20			## + NEW - used IPC::Session instead of IPC::Run to get better results at linux
21			##
22	jonen	1.11	## Revision 1.10 2003/06/23 15:59:16 joko
23			## major/minor fixes?
24			##
25	joko	1.10	## Revision 1.9 2003/05/13 05:36:24 joko
26			## heavy modifications to run_cmd
27			## + sub get_executable
28			## + sub get_executable_wrapper
29			##
30	joko	1.9	## Revision 1.8 2003/04/04 17:31:59 joko
31			## + sub make_guid
32			##
33	joko	1.8	## Revision 1.7 2003/03/29 07:24:10 joko
34			## enhanced 'run_cmd': now tries to execute program with appropriate application (e.g. 'cmd.exe' or 'perl')
35			##
36	joko	1.7	## Revision 1.6 2003/03/28 06:58:06 joko
37			## new: 'run_cmd' now asynchronous! (via IPC::Run...)
38			##
39	joko	1.6	## Revision 1.5 2003/02/22 17:26:13 joko
40			## + enhanced unix compatibility fix
41			##
42	joko	1.5	## Revision 1.4 2003/02/22 17:19:36 joko
43			## + unix compatibility fix
44			##
45	joko	1.4	## Revision 1.3 2003/02/14 14:17:04 joko
46			## - shortened seperator
47			##
48	joko	1.3	## Revision 1.2 2003/02/11 05:14:28 joko
49			## + refactored code from libp.pm
50			##
51	joko	1.2	## Revision 1.1 2003/02/09 04:49:45 joko
52			## + shortcuts now refactored to this file
53			##
54	joko	1.1	## ---------------------------------------------------------------------------
55
56
57			package shortcuts;
58
59			use strict;
60			use warnings;
61
62			require Exporter;
63			our @ISA = qw( Exporter );
64			our @EXPORT_OK = qw(
65			strftime
66			now today
67			run_cmd run_cmds
68			get_chomped
69	joko	1.2	bool2status
70	joko	1.8	make_guid
71	joko	1.1	);
72
73
74			use Data::Dumper;
75	joko	1.6	use POSIX qw( strftime );
76			#use IPC::Run qw( run timeout );
77	joko	1.14	use IPC::Run qw( start pump finish timeout run timer ) ;
78	joko	1.8	use Carp;
79
80	joko	1.13	# NEW - 2003-06-23 for Linux (what about *BSD?)
81			use IPC::Session;
82	joko	1.8
83	joko	1.14	use File::Spec;
84			use Proc::Background;
85
86	joko	1.1
87			# $now_string = strftime "%a %b %e %H:%M:%S %Y", localtime;
88			# see "perldoc -f localtime"
89			sub now {
90			my $options = shift;
91			my $pattern = "%Y-%m-%d %H:%M:%S";
92			$pattern = "%Y-%m-%d_%H-%M-%S" if $options->{fs};
93			my $result = strftime($pattern, localtime);
94			return $result;
95			}
96
97			sub today {
98			return strftime("%Y-%m-%d", localtime);
99			}
100
101	joko	1.12	sub RUNNING_IN_HELL () { $^O eq 'MSWin32' }
102
103
104	joko	1.9	sub get_executable {
105			my $cmd = shift;
106			# FIXME: detect type of program and run with proper application/interpreter
107			# using IPC::Run we have to dispatch this on our own! no os-interaction or interpolation here!?
108			# => better use absolute path-names only?!
109			my $application = '';
110			if ($cmd =~ m/\w+\.pl\s./) {
111	joko	1.13	$application = get_interpreter_wrapper($cmd, 'perl');
112			#$cmd = "$application $cmd" if $application;
113			$application .= ' ';
114
115	joko	1.10	} else {
116			$application = './';
117	joko	1.9	}
118			return $application;
119			}
120
121	joko	1.13	sub get_interpreter_wrapper {
122	joko	1.9	my $cmd = shift;
123	joko	1.13	my $language = shift;
124			$language \|\|= '';
125
126			my $wrapper = '';
127
128			if ($language eq 'perl') {
129
130			if (RUNNING_IN_HELL()) {
131			# Required to adapt to IPC::Run on win32.
132	joko	1.14	#$wrapper = 'cmd.exe /C perl';
133			#$wrapper = 'start perl';
134			$wrapper = 'perl';
135			#$wrapper = 'cmd.exe /C';
136	joko	1.13	} else {
137			# NEW 2003-06-23 - needed if used with IPC::Session (at Linux)
138			# whats about Win32?
139			$wrapper = 'perl';
140			}
141
142			} else {
143			die("No wrapper for language '$language'.");
144			}
145
146			return $wrapper;
147	joko	1.9	}
148
149
150	joko	1.1	sub run_cmd {
151			my $cmd = shift;
152			my $caption = shift;
153	joko	1.6	my $options = shift;
154
155	joko	1.14	#print STDOUT "run_cmd - options: ", Dumper($options), "\n";
156	joko	1.9
157	joko	1.6	# report - header
158	joko	1.3	my $sep = "-" x 60;
159	joko	1.14	print STDOUT $sep, "\n";
160			print STDOUT " ", $cmd;
161			print STDOUT " - ", $caption if $caption;
162			print STDOUT "\n", $sep, "\n";
163	joko	1.4
164	joko	1.5	# strip name of executable from full command string
165	joko	1.14	$cmd =~ m/^(.+?)\s(.*)$/;
166	joko	1.5	my $executable = $1;
167	joko	1.14	my $executable_args = $2;
168	joko	1.5
169	joko	1.9	=pod
170	joko	1.5	# for unix: check if executable is in local directory, if so - prefix with './'
171	joko	1.4	if (!RUNNING_IN_HELL()) {
172	joko	1.5	#if ($cmd !~ m/\//) {
173			if (-e $executable) {
174	joko	1.4	}
175			}
176	joko	1.9	=cut
177
178			# new of 2003-05-07: basedir option to be prepended to command string
179			my $basedir = $options->{BASEDIR};
180			my $use_path = $options->{USE_PATH};
181
182			# for all systems: check existance of files - use basedir if given, try current directory otherwise
183			if ($basedir) {
184			-e "$basedir/$executable" or die("$basedir/$executable does not exist.");
185			$basedir .= '/';
186	joko	1.14	$cmd = "$basedir$cmd";
187	joko	1.9	} elsif ($use_path) {
188	joko	1.14	#$basedir = "";
189			$basedir = findpath($executable);
190			#print "basedir: $basedir", "\n";
191			my $abspath = File::Spec->catfile($basedir, $executable);
192			#print STDOUT "PATH: ", $abspath, "\n";
193			-e $abspath or die("$abspath does not exist.");
194			$cmd = $abspath . ' ' . $executable_args;
195	joko	1.9	} else {
196			-e $executable or die("$executable does not exist.");
197			#$basedir = ".";
198	joko	1.10	#$basedir .= './';
199	joko	1.12	$basedir = "";
200	joko	1.14	$cmd = "$basedir$cmd";
201	joko	1.9	}
202
203	joko	1.6	# V1 - backticks or qq{}
204	joko	1.1	#`$cmd`;
205	joko	1.6	#qq{$cmd};
206
207			# V2 - via 'system'
208			#system($cmd);
209
210	joko	1.14	#if (not $use_path) {
211	joko	1.10	my $application = get_executable($cmd);
212			$cmd = "$application$cmd" if $application;
213	joko	1.14	#}
214	joko	1.10
215	joko	1.16	my @cmd = split(' ', $cmd);
216
217	jonen	1.11	# V3 - using IPC (optional)
218	joko	1.6	if ($options->{async}) {
219	jonen	1.11
220	joko	1.6	#run \@cmd, \$in, \$out, \$err, timeout( 10 ) or die "cat: $?";
221	joko	1.16
222			print STDOUT "run_cmd[async]: Proc::Background: $cmd", "\n";
223	joko	1.6
224	jonen	1.11	# V3.1 - using IPC::Run
225			#
226			# tests:
227	joko	1.13
228			if (RUNNING_IN_HELL()) {
229
230			#my $in; my $out; my $err;
231	joko	1.14
232			#print STDOUT "findpath: ", findpath('rap.pl'), "\n";
233	joko	1.13
234			# no success!
235			#start \@cmd, timeout(0) or croak("run_cmd: IPC::Run could not start '$cmd'.");
236			#
237			# success on Win32, but seems broken at 'timeout' on linux:
238	joko	1.14	#run(\@cmd, timeout(3)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
239			#start(\@cmd, timer(2)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
240			#start(\@cmd, \undef) or croak("run_cmd: IPC::Run could not start '$cmd'.");
241			#start \@cmd or croak("run_cmd: IPC::Run could not start '$cmd'.");
242			#start(\@cmd, timeout(1)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
243	joko	1.13
244			# other tests ;)
245			#$IPC::Run::Timer::timeout = 2000;
246			#start $cmd or die("IPC::Run could not start '$cmd'.");
247
248	joko	1.14	#my $in; my $out; my $t;
249			#my $harness = start( \@cmd, \$in, \$out, $t = timer( 5 ) ) ;
250			#my $harness = start( \@cmd ) ;
251			#$harness->pump_nb();
252
253			#my $postfix = '2>&1 \|';
254			#open PIPE, "$cmd $postfix" or die("run_cmd: could not run in background via open!");
255
256			my $proc1 = Proc::Background->new(@cmd);
257			print "pid: ", $proc1->pid(), "\n";
258
259
260	joko	1.13	} else {
261
262	jonen	1.15	#print STDOUT "run_cmd: IPC::Session: $cmd", "\n";
263	joko	1.13
264			# V3.2 - using IPC::Session
265			# success on Linux AND Win32 ??
266			#
267			# set timeout:
268	jonen	1.15	# (don't really know why we needs some secconds
269	joko	1.13	# to wait for init of process !?!)
270	jonen	1.15	#my $session_timeout = 15;
271	joko	1.13	# set session name (default: cmd as string):
272	jonen	1.15	#my $session_command = $cmd;
273			#my $session_shell = "/bin/sh";
274			# create session (beware of using '->new' here!?):
275			#my $session = new IPC::Session($session_shell, $session_timeout);
276	joko	1.13
277			# send 'cmd' to session - not required since complete command is sent via constructor above
278	jonen	1.15	#$session->send($cmd);
279
280			#my $output = $session->stdout();
281			#print "WS::Admin started.\n" if $output = ' ';
282
283			# tests
284			#$session->send("echo hello");
285			#chomp(my $hello = $session->stdout());
286			#print "ok 3\n" if $hello eq "hello";
287	joko	1.13
288			# optional switch case:
289			#for ($session->stdout()) {
290	jonen	1.15	# /_bootDataBases/ && do { print "WS::Admin started.\n" };
291	joko	1.13	#}
292			# optional get error:
293			#my $err = session->stderr();
294	jonen	1.15	#print "ERR: " . Dumper($err) . "\n";
295
296			#open( *OUT, ">out.txt" ) ;
297			#open( *ERR, ">err.txt" ) ;
298			#run(\@cmd, \undef, \OUT, \ERR ) or croak("run_cmd: IPC::Run could not start '$cmd'.");
299			#my ($out, $err);
300			#my $h = start(\@cmd, \undef, \OUT, \ERR ) or croak("run_cmd: IPC::Run could not start '$cmd'.");
301			#finish $h if $err =~ /error/;
302
303			# get child pid
304			#my $kid;
305			#do { $kid=wait(); } until $kid > 0;
306			#print "Child PID: " . $kid . "n";
307
308			#finish $h;
309
310
311			# test using Proc::Background - success !!
312			my $proc = Proc::Background->new($cmd);
313			my $kid = $proc->pid();
314			print STDOUT "run_cmd: Proc::Background: $cmd, child PID $kid", "\n";
315			$proc->wait();
316			$proc->die();
317
318	joko	1.13	}
319	jonen	1.15
320
321			} elsif ($options->{detach}) {
322	joko	1.16
323			if (RUNNING_IN_HELL()) {
324			print STDOUT "run_cmd[detach]: Proc::Background: $cmd", "\n";
325			my $proc1 = Proc::Background->new(@cmd);
326			print "pid: ", $proc1->pid(), "\n";
327			} else {
328			print STDERR "run_cmd[detach]: system('$cmd' &).", "\n";
329			system($cmd . ' &');
330			}
331	jonen	1.15
332	joko	1.6	} else {
333	joko	1.14	print STDOUT "run_cmd: system('$cmd').", "\n";
334	joko	1.6	system($cmd);
335			}
336
337	joko	1.14	print STDOUT "run_cmd: ready.", "\n";
338	joko	1.6
339	joko	1.1	}
340
341			sub run_cmds {
342	joko	1.9	my $options = {};
343			if (ref $_[$#_] eq 'HASH') {
344			#print "YAI", "\n";
345			$options = pop @_;
346			}
347	joko	1.1	foreach (@_) {
348	joko	1.9	run_cmd($_, '', $options);
349	joko	1.1	}
350			}
351
352			sub get_chomped {
353			my $str = shift;
354			chomp($str);
355			return $str;
356	joko	1.2	}
357
358			sub bool2status {
359			my $bool = shift;
360			return ($bool ? 'ok' : 'failed');
361	joko	1.1	}
362	joko	1.4
363	joko	1.8	# create global unique identifers using Data::UUID
364			# if updating this code, please also modify Tangram::Storage::make_guid
365			sub make_guid
366			{
367			my $self = shift;
368
369			my $guid;
370
371			# try to use Data::UUID first ...
372			eval("use Data::UUID;");
373			if (!$@) {
374			my $ug = Data::UUID->new();
375			$guid = $ug->create_str();
376
377			# ... if this fails, try to fallback to Data::UUID::PurePerl instead ...
378			} else {
379			eval("use Data::UUID::PurePerl;");
380			if (!$@) {
381			$guid = Data::UUID::PurePerl::generate_id();
382			} else {
383			croak "couldn't create globally unique identifier";
384			}
385			}
386
387			return $guid;
388			}
389	joko	1.14
390			# [modified] from: http://www.mit.edu/afs/athena/contrib/watchmaker/src/pt/Configure
391			sub findpath {
392			#local($path);
393			#local($arg) = shift;
394			my $arg = shift;
395			my $path;
396			#for my $dir (split(/:/,$ENV{'PATH'})) {
397			for my $dir (File::Spec->path()) {
398			#if (-x "$dir/$arg" && -f _) {
399			#print STDOUT "scanning: ", "$dir/$arg", "\n";
400			if (-e "$dir/$arg") {
401			#$path = "$dir/$arg";
402			#$path = "$dir/";
403			$path = $dir;
404			last;
405			}
406			}
407			$path;
408			}
409	jonen	1.11
410	joko	1.1	1;
411	joko	1.12	__END__
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