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

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Revision 1.11 - (show annotations)
Mon Jun 23 17:41:50 2003 UTC (20 years, 10 months ago) by jonen
Branch: MAIN
Changes since 1.10: +48 -11 lines
+ NEW - used IPC::Session instead of IPC::Run to get better results at linux

1 ## ---------------------------------------------------------------------------
2 ## $Id: shortcuts.pm,v 1.10 2003/06/23 15:59:16 joko Exp $
3 ## ---------------------------------------------------------------------------
4 ## $Log: shortcuts.pm,v $
5 ## Revision 1.10 2003/06/23 15:59:16 joko
6 ## major/minor fixes?
7 ##
8 ## Revision 1.9 2003/05/13 05:36:24 joko
9 ## heavy modifications to run_cmd
10 ## + sub get_executable
11 ## + sub get_executable_wrapper
12 ##
13 ## Revision 1.8 2003/04/04 17:31:59 joko
14 ## + sub make_guid
15 ##
16 ## Revision 1.7 2003/03/29 07:24:10 joko
17 ## enhanced 'run_cmd': now tries to execute program with appropriate application (e.g. 'cmd.exe' or 'perl')
18 ##
19 ## Revision 1.6 2003/03/28 06:58:06 joko
20 ## new: 'run_cmd' now asynchronous! (via IPC::Run...)
21 ##
22 ## Revision 1.5 2003/02/22 17:26:13 joko
23 ## + enhanced unix compatibility fix
24 ##
25 ## Revision 1.4 2003/02/22 17:19:36 joko
26 ## + unix compatibility fix
27 ##
28 ## Revision 1.3 2003/02/14 14:17:04 joko
29 ## - shortened seperator
30 ##
31 ## Revision 1.2 2003/02/11 05:14:28 joko
32 ## + refactored code from libp.pm
33 ##
34 ## Revision 1.1 2003/02/09 04:49:45 joko
35 ## + shortcuts now refactored to this file
36 ##
37 ## ---------------------------------------------------------------------------
38
39
40 package shortcuts;
41
42 use strict;
43 use warnings;
44
45 require Exporter;
46 our @ISA = qw( Exporter );
47 our @EXPORT_OK = qw(
48 strftime
49 now today
50 run_cmd run_cmds
51 get_chomped
52 bool2status
53 make_guid
54 );
55
56
57 use Data::Dumper;
58 use POSIX qw( strftime );
59 #use IPC::Run qw( run timeout );
60 use IPC::Run qw( start pump finish timeout run ) ;
61 use Carp;
62
63 # NEW - 2003-06-23
64 use IPC::Session;
65
66
67 # $now_string = strftime "%a %b %e %H:%M:%S %Y", localtime;
68 # see "perldoc -f localtime"
69 sub now {
70 my $options = shift;
71 my $pattern = "%Y-%m-%d %H:%M:%S";
72 $pattern = "%Y-%m-%d_%H-%M-%S" if $options->{fs};
73 my $result = strftime($pattern, localtime);
74 return $result;
75 }
76
77 sub today {
78 return strftime("%Y-%m-%d", localtime);
79 }
80
81 sub get_executable {
82 my $cmd = shift;
83 # FIXME: detect type of program and run with proper application/interpreter
84 # using IPC::Run we have to dispatch this on our own! *no* os-interaction or interpolation here!?
85 # => better use absolute path-names only?!
86 my $application = '';
87 if ($cmd =~ m/\w+\.pl\s*.*/) {
88 # NEW 2003-06-23 - needed if used with IPC::Session (at Linux)
89 # whats about Win32?
90 $application = 'perl ';
91 } else {
92 $application = './';
93 }
94 return $application;
95 }
96
97 sub get_executable_wrapper {
98 my $cmd = shift;
99 my $application = '';
100 # Required to adapt to IPC::Run on win32.
101 #if (RUNNING_IN_HELL()) {
102 #$application = 'cmd.exe /C';
103 #}
104 return $application;
105 }
106
107
108 sub run_cmd {
109 my $cmd = shift;
110 my $caption = shift;
111 my $options = shift;
112 #$cmd = 'perl ' . $cmd;
113
114 #print Dumper($options);
115
116 # report - header
117 my $sep = "-" x 60;
118 print $sep, "\n";
119 #print " ", $cmd, "\n";
120 #print " ", " $caption", "\n" if $caption;
121 print " ", $cmd;
122 print " - ", $caption if $caption;
123 print "\n";
124 print $sep, "\n";
125
126 # strip name of executable from full command string
127 $cmd =~ m/(.+?)\s/;
128 my $executable = $1;
129
130 =pod
131 # for unix: check if executable is in local directory, if so - prefix with './'
132 if (!RUNNING_IN_HELL()) {
133 #if ($cmd !~ m/\//) {
134 if (-e $executable) {
135 }
136 }
137 =cut
138
139 # new of 2003-05-07: basedir option to be prepended to command string
140 my $basedir = $options->{BASEDIR};
141 my $use_path = $options->{USE_PATH};
142
143 # for all systems: check existance of files - use basedir if given, try current directory otherwise
144 if ($basedir) {
145 -e "$basedir/$executable" or die("$basedir/$executable does not exist.");
146 $basedir .= '/';
147 } elsif ($use_path) {
148 $basedir = "";
149 } else {
150 -e $executable or die("$executable does not exist.");
151 #$basedir = ".";
152 #$basedir .= './';
153 }
154 $cmd = "$basedir$cmd";
155
156 # V1 - backticks or qq{}
157 #`$cmd`;
158 #qq{$cmd};
159
160 # V2 - via 'system'
161 #system($cmd);
162
163 if (not $use_path) {
164 my $application = get_executable($cmd);
165 $cmd = "$application$cmd" if $application;
166 }
167
168 # V3 - using IPC (optional)
169 if ($options->{async}) {
170
171 #$cmd = "$application $cmd" if $application;
172 #my $application = get_executable_wrapper($cmd);
173
174 print "run_cmd: IPC::Run: $cmd", "\n";
175 #run \@cmd, \$in, \$out, \$err, timeout( 10 ) or die "cat: $?";
176
177 my @cmd = split(' ', $cmd);
178
179
180 # V3.1 - using IPC::Run
181 #
182 # tests:
183 #my $in; my $out; my $err;
184 #print "IPC::Run: $cmd", "\n";
185 #start \@cmd, timeout(0) or croak("run_cmd: IPC::Run could not start '$cmd'.");
186 #
187 # success on Win32, but seems broken at 'timeout' on linux:
188 #run(\@cmd, timeout(2)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
189
190 # other tests ;)
191 #$IPC::Run::Timer::timeout = 2000;
192 #start $cmd or die("IPC::Run could not start '$cmd'.");
193
194
195 # V3.2 - using IPC::Session
196 # success on Linux AND Win32 ??
197 #
198 # set timeout:
199 # (don't really know why we needs 2 secconds
200 # to wait for init of process !?!)
201 my $session_timeout = 2;
202 # set session name (default: cmd as string):
203 my $session_name = $cmd;
204 # create session:
205 my $session = new IPC::Session($session_name, $session_timeout);
206 # send 'cmd' to session:
207 $session->send(\@cmd);
208 # optional switch case:
209 #for ($session->stdout()) {
210 #}
211 # optional get error:
212 #my $err = session->stderr();
213
214
215 } else {
216 print "run_cmd: system('$cmd').", "\n";
217 system($cmd);
218 }
219
220 print "run_cmd: ready.", "\n";
221
222 }
223
224 sub run_cmds {
225 my $options = {};
226 if (ref $_[$#_] eq 'HASH') {
227 #print "YAI", "\n";
228 $options = pop @_;
229 }
230 foreach (@_) {
231 run_cmd($_, '', $options);
232 }
233 }
234
235 sub get_chomped {
236 my $str = shift;
237 chomp($str);
238 return $str;
239 }
240
241 sub bool2status {
242 my $bool = shift;
243 return ($bool ? 'ok' : 'failed');
244 }
245
246 sub RUNNING_IN_HELL () { $^O eq 'MSWin32' }
247
248 # create global unique identifers using Data::UUID
249 # if updating this code, please also modify Tangram::Storage::make_guid
250 sub make_guid
251 {
252 my $self = shift;
253
254 my $guid;
255
256 # try to use Data::UUID first ...
257 eval("use Data::UUID;");
258 if (!$@) {
259 my $ug = Data::UUID->new();
260 $guid = $ug->create_str();
261
262 # ... if this fails, try to fallback to Data::UUID::PurePerl instead ...
263 } else {
264 eval("use Data::UUID::PurePerl;");
265 if (!$@) {
266 $guid = Data::UUID::PurePerl::generate_id();
267 } else {
268 croak "couldn't create globally unique identifier";
269 }
270 }
271
272 return $guid;
273 }
274
275
276
277 1;

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