perl/libs/shortcuts.pm

## ---------------------------------------------------------------------------
##  $Id: shortcuts.pm,v 1.16 2003/06/25 22:49:56 joko Exp $
## ---------------------------------------------------------------------------
##  $Log: shortcuts.pm,v $
##  Revision 1.16  2003/06/25 22:49:56  joko
##  RUNNING_IN_HELL mode for detach option
##
##  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: ", $proc1->pid(), "\n";
    } else {
      print STDOUT "run_cmd[detach]: system('$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	jonen	1.17	## $Id: shortcuts.pm,v 1.16 2003/06/25 22:49:56 joko Exp $
3	joko	1.1	## ---------------------------------------------------------------------------
4			## $Log: shortcuts.pm,v $
5	jonen	1.17	## Revision 1.16 2003/06/25 22:49:56 joko
6			## RUNNING_IN_HELL mode for detach option
7			##
8	joko	1.16	## Revision 1.15 2003/06/24 20:21:12 jonen
9			## + changed linux part of run_cmd to use Proc::Background instead of IPC::...
10			##
11	jonen	1.15	## Revision 1.14 2003/06/24 20:13:18 joko
12			## + sub findpatch
13			## + now using findpatch and Proc::Background for win32/perl
14			##
15	joko	1.14	## Revision 1.13 2003/06/23 20:58:31 joko
16			## restructured, hopefully makes Linux and Windows (and *BSD) more compatible... what about IPC::Cmd???
17			##
18	joko	1.13	## Revision 1.12 2003/06/23 19:43:19 joko
19			## minor cleanup
20			## now using IPC::Session::NoShell
21			##
22	joko	1.12	## Revision 1.11 2003/06/23 17:41:50 jonen
23			## + NEW - used IPC::Session instead of IPC::Run to get better results at linux
24			##
25	jonen	1.11	## Revision 1.10 2003/06/23 15:59:16 joko
26			## major/minor fixes?
27			##
28	joko	1.10	## Revision 1.9 2003/05/13 05:36:24 joko
29			## heavy modifications to run_cmd
30			## + sub get_executable
31			## + sub get_executable_wrapper
32			##
33	joko	1.9	## Revision 1.8 2003/04/04 17:31:59 joko
34			## + sub make_guid
35			##
36	joko	1.8	## Revision 1.7 2003/03/29 07:24:10 joko
37			## enhanced 'run_cmd': now tries to execute program with appropriate application (e.g. 'cmd.exe' or 'perl')
38			##
39	joko	1.7	## Revision 1.6 2003/03/28 06:58:06 joko
40			## new: 'run_cmd' now asynchronous! (via IPC::Run...)
41			##
42	joko	1.6	## Revision 1.5 2003/02/22 17:26:13 joko
43			## + enhanced unix compatibility fix
44			##
45	joko	1.5	## Revision 1.4 2003/02/22 17:19:36 joko
46			## + unix compatibility fix
47			##
48	joko	1.4	## Revision 1.3 2003/02/14 14:17:04 joko
49			## - shortened seperator
50			##
51	joko	1.3	## Revision 1.2 2003/02/11 05:14:28 joko
52			## + refactored code from libp.pm
53			##
54	joko	1.2	## Revision 1.1 2003/02/09 04:49:45 joko
55			## + shortcuts now refactored to this file
56			##
57	joko	1.1	## ---------------------------------------------------------------------------
58
59
60			package shortcuts;
61
62			use strict;
63			use warnings;
64
65			require Exporter;
66			our @ISA = qw( Exporter );
67			our @EXPORT_OK = qw(
68			strftime
69			now today
70			run_cmd run_cmds
71			get_chomped
72	joko	1.2	bool2status
73	joko	1.8	make_guid
74	joko	1.1	);
75
76
77			use Data::Dumper;
78	joko	1.6	use POSIX qw( strftime );
79			#use IPC::Run qw( run timeout );
80	joko	1.14	use IPC::Run qw( start pump finish timeout run timer ) ;
81	joko	1.8	use Carp;
82
83	joko	1.13	# NEW - 2003-06-23 for Linux (what about *BSD?)
84			use IPC::Session;
85	joko	1.8
86	joko	1.14	use File::Spec;
87			use Proc::Background;
88
89	joko	1.1
90			# $now_string = strftime "%a %b %e %H:%M:%S %Y", localtime;
91			# see "perldoc -f localtime"
92			sub now {
93			my $options = shift;
94			my $pattern = "%Y-%m-%d %H:%M:%S";
95			$pattern = "%Y-%m-%d_%H-%M-%S" if $options->{fs};
96			my $result = strftime($pattern, localtime);
97			return $result;
98			}
99
100			sub today {
101			return strftime("%Y-%m-%d", localtime);
102			}
103
104	joko	1.12	sub RUNNING_IN_HELL () { $^O eq 'MSWin32' }
105
106
107	joko	1.9	sub get_executable {
108			my $cmd = shift;
109			# FIXME: detect type of program and run with proper application/interpreter
110			# using IPC::Run we have to dispatch this on our own! no os-interaction or interpolation here!?
111			# => better use absolute path-names only?!
112			my $application = '';
113			if ($cmd =~ m/\w+\.pl\s./) {
114	joko	1.13	$application = get_interpreter_wrapper($cmd, 'perl');
115			#$cmd = "$application $cmd" if $application;
116			$application .= ' ';
117
118	joko	1.10	} else {
119			$application = './';
120	joko	1.9	}
121			return $application;
122			}
123
124	joko	1.13	sub get_interpreter_wrapper {
125	joko	1.9	my $cmd = shift;
126	joko	1.13	my $language = shift;
127			$language \|\|= '';
128
129			my $wrapper = '';
130
131			if ($language eq 'perl') {
132
133			if (RUNNING_IN_HELL()) {
134			# Required to adapt to IPC::Run on win32.
135	joko	1.14	#$wrapper = 'cmd.exe /C perl';
136			#$wrapper = 'start perl';
137			$wrapper = 'perl';
138			#$wrapper = 'cmd.exe /C';
139	joko	1.13	} else {
140			# NEW 2003-06-23 - needed if used with IPC::Session (at Linux)
141			# whats about Win32?
142			$wrapper = 'perl';
143			}
144
145			} else {
146			die("No wrapper for language '$language'.");
147			}
148
149			return $wrapper;
150	joko	1.9	}
151
152
153	joko	1.1	sub run_cmd {
154			my $cmd = shift;
155			my $caption = shift;
156	joko	1.6	my $options = shift;
157
158	joko	1.14	#print STDOUT "run_cmd - options: ", Dumper($options), "\n";
159	joko	1.9
160	joko	1.6	# report - header
161	joko	1.3	my $sep = "-" x 60;
162	joko	1.14	print STDOUT $sep, "\n";
163			print STDOUT " ", $cmd;
164			print STDOUT " - ", $caption if $caption;
165			print STDOUT "\n", $sep, "\n";
166	joko	1.4
167	joko	1.5	# strip name of executable from full command string
168	joko	1.14	$cmd =~ m/^(.+?)\s(.*)$/;
169	joko	1.5	my $executable = $1;
170	joko	1.14	my $executable_args = $2;
171	joko	1.5
172	joko	1.9	=pod
173	joko	1.5	# for unix: check if executable is in local directory, if so - prefix with './'
174	joko	1.4	if (!RUNNING_IN_HELL()) {
175	joko	1.5	#if ($cmd !~ m/\//) {
176			if (-e $executable) {
177	joko	1.4	}
178			}
179	joko	1.9	=cut
180
181			# new of 2003-05-07: basedir option to be prepended to command string
182			my $basedir = $options->{BASEDIR};
183			my $use_path = $options->{USE_PATH};
184
185			# for all systems: check existance of files - use basedir if given, try current directory otherwise
186			if ($basedir) {
187			-e "$basedir/$executable" or die("$basedir/$executable does not exist.");
188			$basedir .= '/';
189	joko	1.14	$cmd = "$basedir$cmd";
190	joko	1.9	} elsif ($use_path) {
191	joko	1.14	#$basedir = "";
192			$basedir = findpath($executable);
193			#print "basedir: $basedir", "\n";
194			my $abspath = File::Spec->catfile($basedir, $executable);
195			#print STDOUT "PATH: ", $abspath, "\n";
196			-e $abspath or die("$abspath does not exist.");
197			$cmd = $abspath . ' ' . $executable_args;
198	joko	1.9	} else {
199			-e $executable or die("$executable does not exist.");
200			#$basedir = ".";
201	joko	1.10	#$basedir .= './';
202	joko	1.12	$basedir = "";
203	joko	1.14	$cmd = "$basedir$cmd";
204	joko	1.9	}
205
206	joko	1.6	# V1 - backticks or qq{}
207	joko	1.1	#`$cmd`;
208	joko	1.6	#qq{$cmd};
209
210			# V2 - via 'system'
211			#system($cmd);
212
213	joko	1.14	#if (not $use_path) {
214	joko	1.10	my $application = get_executable($cmd);
215			$cmd = "$application$cmd" if $application;
216	joko	1.14	#}
217	joko	1.10
218	joko	1.16	my @cmd = split(' ', $cmd);
219
220	jonen	1.11	# V3 - using IPC (optional)
221	joko	1.6	if ($options->{async}) {
222	jonen	1.11
223	joko	1.6	#run \@cmd, \$in, \$out, \$err, timeout( 10 ) or die "cat: $?";
224	joko	1.16
225			print STDOUT "run_cmd[async]: Proc::Background: $cmd", "\n";
226	joko	1.6
227	jonen	1.11	# V3.1 - using IPC::Run
228			#
229			# tests:
230	joko	1.13
231			if (RUNNING_IN_HELL()) {
232
233			#my $in; my $out; my $err;
234	joko	1.14
235			#print STDOUT "findpath: ", findpath('rap.pl'), "\n";
236	joko	1.13
237			# no success!
238			#start \@cmd, timeout(0) or croak("run_cmd: IPC::Run could not start '$cmd'.");
239			#
240			# success on Win32, but seems broken at 'timeout' on linux:
241	joko	1.14	#run(\@cmd, timeout(3)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
242			#start(\@cmd, timer(2)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
243			#start(\@cmd, \undef) or croak("run_cmd: IPC::Run could not start '$cmd'.");
244			#start \@cmd or croak("run_cmd: IPC::Run could not start '$cmd'.");
245			#start(\@cmd, timeout(1)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
246	joko	1.13
247			# other tests ;)
248			#$IPC::Run::Timer::timeout = 2000;
249			#start $cmd or die("IPC::Run could not start '$cmd'.");
250
251	joko	1.14	#my $in; my $out; my $t;
252			#my $harness = start( \@cmd, \$in, \$out, $t = timer( 5 ) ) ;
253			#my $harness = start( \@cmd ) ;
254			#$harness->pump_nb();
255
256			#my $postfix = '2>&1 \|';
257			#open PIPE, "$cmd $postfix" or die("run_cmd: could not run in background via open!");
258
259			my $proc1 = Proc::Background->new(@cmd);
260			print "pid: ", $proc1->pid(), "\n";
261
262
263	joko	1.13	} else {
264
265	jonen	1.15	#print STDOUT "run_cmd: IPC::Session: $cmd", "\n";
266	joko	1.13
267			# V3.2 - using IPC::Session
268			# success on Linux AND Win32 ??
269			#
270			# set timeout:
271	jonen	1.15	# (don't really know why we needs some secconds
272	joko	1.13	# to wait for init of process !?!)
273	jonen	1.15	#my $session_timeout = 15;
274	joko	1.13	# set session name (default: cmd as string):
275	jonen	1.15	#my $session_command = $cmd;
276			#my $session_shell = "/bin/sh";
277			# create session (beware of using '->new' here!?):
278			#my $session = new IPC::Session($session_shell, $session_timeout);
279	joko	1.13
280			# send 'cmd' to session - not required since complete command is sent via constructor above
281	jonen	1.15	#$session->send($cmd);
282
283			#my $output = $session->stdout();
284			#print "WS::Admin started.\n" if $output = ' ';
285
286			# tests
287			#$session->send("echo hello");
288			#chomp(my $hello = $session->stdout());
289			#print "ok 3\n" if $hello eq "hello";
290	joko	1.13
291			# optional switch case:
292			#for ($session->stdout()) {
293	jonen	1.15	# /_bootDataBases/ && do { print "WS::Admin started.\n" };
294	joko	1.13	#}
295			# optional get error:
296			#my $err = session->stderr();
297	jonen	1.15	#print "ERR: " . Dumper($err) . "\n";
298
299			#open( *OUT, ">out.txt" ) ;
300			#open( *ERR, ">err.txt" ) ;
301			#run(\@cmd, \undef, \OUT, \ERR ) or croak("run_cmd: IPC::Run could not start '$cmd'.");
302			#my ($out, $err);
303			#my $h = start(\@cmd, \undef, \OUT, \ERR ) or croak("run_cmd: IPC::Run could not start '$cmd'.");
304			#finish $h if $err =~ /error/;
305
306			# get child pid
307			#my $kid;
308			#do { $kid=wait(); } until $kid > 0;
309			#print "Child PID: " . $kid . "n";
310
311			#finish $h;
312
313
314			# test using Proc::Background - success !!
315			my $proc = Proc::Background->new($cmd);
316			my $kid = $proc->pid();
317			print STDOUT "run_cmd: Proc::Background: $cmd, child PID $kid", "\n";
318			$proc->wait();
319			$proc->die();
320
321	joko	1.13	}
322	jonen	1.15
323
324			} elsif ($options->{detach}) {
325	joko	1.16
326			if (RUNNING_IN_HELL()) {
327			print STDOUT "run_cmd[detach]: Proc::Background: $cmd", "\n";
328			my $proc1 = Proc::Background->new(@cmd);
329			print "pid: ", $proc1->pid(), "\n";
330			} else {
331	jonen	1.17	print STDOUT "run_cmd[detach]: system('$cmd' &).", "\n";
332	joko	1.16	system($cmd . ' &');
333			}
334	jonen	1.15
335	joko	1.6	} else {
336	joko	1.14	print STDOUT "run_cmd: system('$cmd').", "\n";
337	joko	1.6	system($cmd);
338			}
339
340	joko	1.14	print STDOUT "run_cmd: ready.", "\n";
341	joko	1.6
342	joko	1.1	}
343
344			sub run_cmds {
345	joko	1.9	my $options = {};
346			if (ref $_[$#_] eq 'HASH') {
347			#print "YAI", "\n";
348			$options = pop @_;
349			}
350	joko	1.1	foreach (@_) {
351	joko	1.9	run_cmd($_, '', $options);
352	joko	1.1	}
353			}
354
355			sub get_chomped {
356			my $str = shift;
357			chomp($str);
358			return $str;
359	joko	1.2	}
360
361			sub bool2status {
362			my $bool = shift;
363			return ($bool ? 'ok' : 'failed');
364	joko	1.1	}
365	joko	1.4
366	joko	1.8	# create global unique identifers using Data::UUID
367			# if updating this code, please also modify Tangram::Storage::make_guid
368			sub make_guid
369			{
370			my $self = shift;
371
372			my $guid;
373
374			# try to use Data::UUID first ...
375			eval("use Data::UUID;");
376			if (!$@) {
377			my $ug = Data::UUID->new();
378			$guid = $ug->create_str();
379
380			# ... if this fails, try to fallback to Data::UUID::PurePerl instead ...
381			} else {
382			eval("use Data::UUID::PurePerl;");
383			if (!$@) {
384			$guid = Data::UUID::PurePerl::generate_id();
385			} else {
386			croak "couldn't create globally unique identifier";
387			}
388			}
389
390			return $guid;
391			}
392	joko	1.14
393			# [modified] from: http://www.mit.edu/afs/athena/contrib/watchmaker/src/pt/Configure
394			sub findpath {
395			#local($path);
396			#local($arg) = shift;
397			my $arg = shift;
398			my $path;
399			#for my $dir (split(/:/,$ENV{'PATH'})) {
400			for my $dir (File::Spec->path()) {
401			#if (-x "$dir/$arg" && -f _) {
402			#print STDOUT "scanning: ", "$dir/$arg", "\n";
403			if (-e "$dir/$arg") {
404			#$path = "$dir/$arg";
405			#$path = "$dir/";
406			$path = $dir;
407			last;
408			}
409			}
410			$path;
411			}
412	jonen	1.11
413	joko	1.1	1;
414	joko	1.12	__END__
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