/[cvs]/nfo/perl/libs/shortcuts.pm
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Contents of /nfo/perl/libs/shortcuts.pm

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Revision 1.9 - (show annotations)
Tue May 13 05:36:24 2003 UTC (20 years, 11 months ago) by joko
Branch: MAIN
Changes since 1.8: +68 -20 lines
heavy modifications to run_cmd
+ sub get_executable
+ sub get_executable_wrapper

1 ## ---------------------------------------------------------------------------
2 ## $Id: shortcuts.pm,v 1.8 2003/04/04 17:31:59 joko Exp $
3 ## ---------------------------------------------------------------------------
4 ## $Log: shortcuts.pm,v $
5 ## Revision 1.8 2003/04/04 17:31:59 joko
6 ## + sub make_guid
7 ##
8 ## Revision 1.7 2003/03/29 07:24:10 joko
9 ## enhanced 'run_cmd': now tries to execute program with appropriate application (e.g. 'cmd.exe' or 'perl')
10 ##
11 ## Revision 1.6 2003/03/28 06:58:06 joko
12 ## new: 'run_cmd' now asynchronous! (via IPC::Run...)
13 ##
14 ## Revision 1.5 2003/02/22 17:26:13 joko
15 ## + enhanced unix compatibility fix
16 ##
17 ## Revision 1.4 2003/02/22 17:19:36 joko
18 ## + unix compatibility fix
19 ##
20 ## Revision 1.3 2003/02/14 14:17:04 joko
21 ## - shortened seperator
22 ##
23 ## Revision 1.2 2003/02/11 05:14:28 joko
24 ## + refactored code from libp.pm
25 ##
26 ## Revision 1.1 2003/02/09 04:49:45 joko
27 ## + shortcuts now refactored to this file
28 ##
29 ## ---------------------------------------------------------------------------
30
31
32 package shortcuts;
33
34 use strict;
35 use warnings;
36
37 require Exporter;
38 our @ISA = qw( Exporter );
39 our @EXPORT_OK = qw(
40 strftime
41 now today
42 run_cmd run_cmds
43 get_chomped
44 bool2status
45 make_guid
46 );
47
48
49 use Data::Dumper;
50 use POSIX qw( strftime );
51 #use IPC::Run qw( run timeout );
52 use IPC::Run qw( start pump finish timeout run ) ;
53 use Carp;
54
55
56
57 # $now_string = strftime "%a %b %e %H:%M:%S %Y", localtime;
58 # see "perldoc -f localtime"
59 sub now {
60 my $options = shift;
61 my $pattern = "%Y-%m-%d %H:%M:%S";
62 $pattern = "%Y-%m-%d_%H-%M-%S" if $options->{fs};
63 my $result = strftime($pattern, localtime);
64 return $result;
65 }
66
67 sub today {
68 return strftime("%Y-%m-%d", localtime);
69 }
70
71 sub get_executable {
72 my $cmd = shift;
73 # FIXME: detect type of program and run with proper application/interpreter
74 # using IPC::Run we have to dispatch this on our own! *no* os-interaction or interpolation here!?
75 # => better use absolute path-names only?!
76 my $application = '';
77 if ($cmd =~ m/\w+\.pl\s*.*/) {
78 $application = 'perl';
79 }
80 return $application;
81 }
82
83 sub get_executable_wrapper {
84 my $cmd = shift;
85 my $application = '';
86 # Required to adapt to IPC::Run on win32.
87 if (RUNNING_IN_HELL()) {
88 #$application = 'cmd.exe /C';
89 $application = 'cmd.exe /C';
90 }
91 return $application;
92 }
93
94
95 sub run_cmd {
96 my $cmd = shift;
97 my $caption = shift;
98 my $options = shift;
99 #$cmd = 'perl ' . $cmd;
100
101 #print Dumper($options);
102
103 # report - header
104 my $sep = "-" x 60;
105 print $sep, "\n";
106 #print " ", $cmd, "\n";
107 #print " ", " $caption", "\n" if $caption;
108 print " ", $cmd;
109 print " - ", $caption if $caption;
110 print "\n";
111 print $sep, "\n";
112
113 # strip name of executable from full command string
114 $cmd =~ m/(.+?)\s/;
115 my $executable = $1;
116
117 =pod
118 # for unix: check if executable is in local directory, if so - prefix with './'
119 if (!RUNNING_IN_HELL()) {
120 #if ($cmd !~ m/\//) {
121 if (-e $executable) {
122 }
123 }
124 =cut
125
126 # new of 2003-05-07: basedir option to be prepended to command string
127 my $basedir = $options->{BASEDIR};
128 my $use_path = $options->{USE_PATH};
129
130 # for all systems: check existance of files - use basedir if given, try current directory otherwise
131 if ($basedir) {
132 -e "$basedir/$executable" or die("$basedir/$executable does not exist.");
133 $basedir .= '/';
134 } elsif ($use_path) {
135 $basedir = "";
136 } else {
137 -e $executable or die("$executable does not exist.");
138 #$basedir = ".";
139 $basedir .= './';
140 }
141 $cmd = "$basedir$cmd";
142
143 # V1 - backticks or qq{}
144 #`$cmd`;
145 #qq{$cmd};
146
147 # V2 - via 'system'
148 #system($cmd);
149
150 # V3 - using IPC::Run (optional)
151 if ($options->{async}) {
152 my $application = get_executable_wrapper($cmd);
153 $cmd = "$application $cmd" if $application;
154
155 print "run_cmd: IPC::Run: $cmd", "\n";
156 #run \@cmd, \$in, \$out, \$err, timeout( 10 ) or die "cat: $?";
157
158 my @cmd = split(' ', $cmd);
159
160 my $in; my $out; my $err;
161 #print "IPC::Run: $cmd", "\n";
162 #start \@cmd, timeout(0) or croak("run_cmd: IPC::Run could not start '$cmd'.");
163 run(\@cmd, timeout(2)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
164
165 #$IPC::Run::Timer::timeout = 2000;
166 #start $cmd or die("IPC::Run could not start '$cmd'.");
167
168 } else {
169 if (!$use_path) {
170 my $application = get_executable($cmd);
171 $cmd = "$application $cmd" if $application;
172 }
173 print "run_cmd: system('$cmd').", "\n";
174 system($cmd);
175 }
176
177 print "run_cmd: ready.", "\n";
178
179 }
180
181 sub run_cmds {
182 my $options = {};
183 if (ref $_[$#_] eq 'HASH') {
184 #print "YAI", "\n";
185 $options = pop @_;
186 }
187 foreach (@_) {
188 run_cmd($_, '', $options);
189 }
190 }
191
192 sub get_chomped {
193 my $str = shift;
194 chomp($str);
195 return $str;
196 }
197
198 sub bool2status {
199 my $bool = shift;
200 return ($bool ? 'ok' : 'failed');
201 }
202
203 sub RUNNING_IN_HELL () { $^O eq 'MSWin32' }
204
205 # create global unique identifers using Data::UUID
206 # if updating this code, please also modify Tangram::Storage::make_guid
207 sub make_guid
208 {
209 my $self = shift;
210
211 my $guid;
212
213 # try to use Data::UUID first ...
214 eval("use Data::UUID;");
215 if (!$@) {
216 my $ug = Data::UUID->new();
217 $guid = $ug->create_str();
218
219 # ... if this fails, try to fallback to Data::UUID::PurePerl instead ...
220 } else {
221 eval("use Data::UUID::PurePerl;");
222 if (!$@) {
223 $guid = Data::UUID::PurePerl::generate_id();
224 } else {
225 croak "couldn't create globally unique identifier";
226 }
227 }
228
229 return $guid;
230 }
231
232 1;

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