[2] | 1 | #!/usr/bin/perl -w
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| 2 | #
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[395] | 3 | # Base subroutines brought by the the Project-Builder project
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| 4 | # which can be easily used by whatever perl project
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[2] | 5 | #
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[395] | 6 | # Copyright B. Cornec 2007-2008
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| 7 | # Provided under the GPL v2
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| 8 | #
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[2] | 9 | # $Id$
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| 10 | #
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| 11 |
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[318] | 12 | package ProjectBuilder::Base;
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| 13 |
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[18] | 14 | use strict;
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[5] | 15 | use lib qw (lib);
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[9] | 16 | use File::Path;
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[318] | 17 | use File::Temp qw(tempdir);
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[8] | 18 | use Data::Dumper;
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[318] | 19 | use Time::localtime qw(localtime);
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[397] | 20 | use Pod::Usage;
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[328] | 21 | use English;
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[681] | 22 | use POSIX qw(locale_h);
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[2] | 23 |
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[318] | 24 | # Inherit from the "Exporter" module which handles exporting functions.
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| 25 |
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| 26 | use Exporter;
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| 27 |
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| 28 | # Export, by default, all the functions into the namespace of
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| 29 | # any code which uses this module.
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| 30 |
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[495] | 31 | our $pbdebug = 0; # Global debug level
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| 32 | our $pbLOG = \*STDOUT; # File descriptor of the log file
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| 33 | our $pbsynmsg = "Error"; # Global error message
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| 34 | our $pbdisplaytype = "text";
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| 35 | # default display mode for messages
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| 36 | our $pblocale = "C";
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[318] | 37 |
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| 38 | our @ISA = qw(Exporter);
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[974] | 39 | our @EXPORT = qw(pb_mkdir_p pb_system pb_rm_rf pb_get_date pb_log pb_log_init pb_get_uri pb_get_content pb_set_content pb_display_file pb_syntax_init pb_syntax pb_temp_init pb_get_arch pb_check_requirements $pbdebug $pbLOG $pbdisplaytype $pblocale);
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[318] | 40 |
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[395] | 41 | =pod
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[2] | 42 |
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[395] | 43 | =head1 NAME
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[2] | 44 |
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[395] | 45 | ProjectBuilder::Base, part of the project-builder.org - module dealing with generic functions suitable for perl project development
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[355] | 46 |
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[395] | 47 | =head1 DESCRIPTION
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[69] | 48 |
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[395] | 49 | This modules provides generic functions suitable for perl project development
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[69] | 50 |
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[395] | 51 | =head1 SYNOPSIS
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[69] | 52 |
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[395] | 53 | use ProjectBuilder::Base;
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[313] | 54 |
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[395] | 55 | #
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| 56 | # Create a directory and its parents
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| 57 | #
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| 58 | pb_mkdir_p("/tmp/foo/bar");
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[313] | 59 |
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[395] | 60 | #
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| 61 | # Remove recursively a directory and its children
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| 62 | #
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| 63 | pb_rm_rf("/tmp/foo");
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[313] | 64 |
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[395] | 65 | #
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| 66 | # Encapsulate the system call for better output and return value test
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| 67 | #
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| 68 | pb_system("ls -l", "Printing directory content");
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[314] | 69 |
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[395] | 70 | #
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| 71 | # Analysis a URI and return its components in a table
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| 72 | #
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[1076] | 73 | my ($scheme, $account, $host, $port, $path) = pb_get_uri("svn+ssh://ac@my.server.org:port/path/to/dir");
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[313] | 74 |
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[395] | 75 | #
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| 76 | # Gives the current date in a table
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| 77 | #
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| 78 | @date = pb_get_date();
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[2] | 79 |
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[395] | 80 | #
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| 81 | # Manages logs of the program
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| 82 | #
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| 83 | pb_log_init(2,\*STDOUT);
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| 84 | pb_log(1,"Message to print\n");
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[313] | 85 |
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[395] | 86 | #
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| 87 | # Manages content of a file
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| 88 | #
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[1063] | 89 | pb_display_file("/etc/passwd",\*STDERR);
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[395] | 90 | my $cnt = pb_get_content("/etc/passwd");
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[313] | 91 |
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[395] | 92 | =head1 USAGE
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[320] | 93 |
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[395] | 94 | =over 4
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[323] | 95 |
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[395] | 96 | =item B<pb_mkdir_p>
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[314] | 97 |
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[395] | 98 | Internal mkdir -p function. Forces mode to 755. Supports multiple parameters.
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[358] | 99 |
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[396] | 100 | Based on File::Path mkpath.
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| 101 |
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[395] | 102 | =cut
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[273] | 103 |
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[74] | 104 | sub pb_mkdir_p {
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[29] | 105 | my @dir = @_;
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| 106 | my $ret = mkpath(@dir, 0, 0755);
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| 107 | return($ret);
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[9] | 108 | }
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| 109 |
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[396] | 110 | =item B<pb_rm_rf>
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[395] | 111 |
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| 112 | Internal rm -rf function. Supports multiple parameters.
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| 113 |
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[396] | 114 | Based on File::Path rmtree.
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| 115 |
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[395] | 116 | =cut
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| 117 |
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[74] | 118 | sub pb_rm_rf {
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[29] | 119 | my @dir = @_;
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| 120 | my $ret = rmtree(@dir, 0, 0);
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| 121 | return($ret);
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[9] | 122 | }
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| 123 |
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[395] | 124 | =item B<pb_system>
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| 125 |
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| 126 | Encapsulate the "system" call for better output and return value test
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| 127 | Needs a $ENV{'PBTMP'} variable which is created by calling the pb_mktemp_init function
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| 128 | Needs pb_log support, so pb_log_init should have benn called before.
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| 129 |
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| 130 | The first parameter is the shell command to call.
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| 131 | The second parameter is the message to print on screen. If none is given, then the command is printed.
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[473] | 132 | The third parameter print the result of the command after correct execution if value is verbose. If value is noredir, it avoids redirecting outputs (e.g. for vi).
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[395] | 133 | This function returns the result the return value of the system command.
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[396] | 134 |
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[395] | 135 | If no error reported, it prints OK on the screen, just after the message. Else it prints the errors generated.
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| 136 |
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| 137 | =cut
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| 138 |
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[74] | 139 | sub pb_system {
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[29] | 140 |
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| 141 | my $cmd=shift;
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[30] | 142 | my $cmt=shift || $cmd;
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[471] | 143 | my $verbose=shift || undef;
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[473] | 144 | my $redir = "";
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[29] | 145 |
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[503] | 146 | pb_log(0,"$cmt... ") if ((! defined $verbose) || ($verbose ne "quiet"));
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[395] | 147 | pb_log(1,"Executing $cmd\n");
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[482] | 148 | unlink("$ENV{'PBTMP'}/system.log") if (-f "$ENV{'PBTMP'}/system.log");
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| 149 | $redir = "2>> $ENV{'PBTMP'}/system.log 1>> $ENV{'PBTMP'}/system.log" if ((! defined $verbose) || ($verbose ne "noredir"));
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[473] | 150 | system("$cmd $redir");
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[347] | 151 | my $res = $?;
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[500] | 152 | # Exit now if the command may fail
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| 153 | if ((defined $verbose) and ($verbose eq "mayfail")) {
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| 154 | pb_log(0,"N/A\n") if ($res != 0);
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| 155 | pb_log(0,"OK\n") if ($res == 0);
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| 156 | return($res)
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| 157 | }
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[347] | 158 | if ($res == -1) {
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[503] | 159 | pb_log(0,"failed to execute ($cmd): $!\n") if ((! defined $verbose) || ($verbose ne "quiet"));
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| 160 | pb_display_file("$ENV{'PBTMP'}/system.log") if ((-f "$ENV{'PBTMP'}/system.log") and ((! defined $verbose) || ($verbose ne "quiet")));
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[347] | 161 | } elsif ($res & 127) {
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[503] | 162 | pb_log(0, "child ($cmd) died with signal ".($? & 127).", ".($? & 128) ? 'with' : 'without'." coredump\n") if ((! defined $verbose) || ($verbose ne "quiet"));
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| 163 | pb_display_file("$ENV{'PBTMP'}/system.log") if ((-f "$ENV{'PBTMP'}/system.log") and ((! defined $verbose) || ($verbose ne "quiet")));
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[347] | 164 | } elsif ($res == 0) {
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[503] | 165 | pb_log(0,"OK\n") if ((! defined $verbose) || ($verbose ne "quiet"));
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[500] | 166 | pb_display_file("$ENV{'PBTMP'}/system.log") if ((defined $verbose) and (-f "$ENV{'PBTMP'}/system.log") and ($verbose ne "quiet"));
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[29] | 167 | } else {
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[503] | 168 | pb_log(0, "child ($cmd) exited with value ".($? >> 8)."\n") if ((! defined $verbose) || ($verbose ne "quiet"));
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| 169 | pb_display_file("$ENV{'PBTMP'}/system.log") if ((-f "$ENV{'PBTMP'}/system.log") and ((! defined $verbose) || ($verbose ne "quiet")));
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[29] | 170 | }
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[347] | 171 | return($res);
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[30] | 172 | }
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[74] | 173 |
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[395] | 174 | =item B<pb_get_uri>
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| 175 |
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| 176 | This function returns a list of 6 parameters indicating the protocol, account, password, server, port, and path contained in the URI passed in parameter.
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| 177 |
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| 178 | A URI has the format protocol://[ac@]host[:port][path[?query][#fragment]].
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[396] | 179 |
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[395] | 180 | Cf man URI.
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| 181 |
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| 182 | =cut
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| 183 |
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[314] | 184 | sub pb_get_uri {
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[313] | 185 |
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[314] | 186 | my $uri = shift || undef;
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[313] | 187 |
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[318] | 188 | pb_log(2,"DEBUG: uri:$uri\n");
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[314] | 189 | my ($scheme, $authority, $path, $query, $fragment) =
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[318] | 190 | $uri =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?| if (defined $uri);
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| 191 | my ($account,$host,$port) = $authority =~ m|(?:([^\@]+)\@)?([^:]+)(:(?:[0-9]+))?| if (defined $authority);
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| 192 |
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| 193 | $scheme = "" if (not defined $scheme);
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| 194 | $authority = "" if (not defined $authority);
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| 195 | $path = "" if (not defined $path);
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| 196 | $account = "" if (not defined $account);
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| 197 | $host = "" if (not defined $host);
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[1076] | 198 | if (not defined $port) {
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| 199 | $port = ""
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| 200 | } else {
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| 201 | # Remove extra : at start
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| 202 | $port =~ s/^://;
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| 203 | }
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[318] | 204 |
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[315] | 205 | pb_log(2,"DEBUG: scheme:$scheme ac:$account host:$host port:$port path:$path\n");
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[314] | 206 | return($scheme, $account, $host, $port, $path);
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[313] | 207 | }
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| 208 |
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[395] | 209 | =item B<pb_get_date>
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[313] | 210 |
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[395] | 211 | This function returns a list of 9 parameters indicating the seconds, minutes, hours, day, month, year, day in the week, day in the year, and daylight saving time flag of the current time.
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[74] | 212 |
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[395] | 213 | Cf: man ctime and description of the struct tm.
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[74] | 214 |
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[395] | 215 | =cut
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[339] | 216 |
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[315] | 217 | sub pb_get_date {
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| 218 |
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| 219 | return(localtime->sec(), localtime->min(), localtime->hour(), localtime->mday(), localtime->mon(), localtime->year(), localtime->wday(), localtime->yday(), localtime->isdst());
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| 220 | }
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| 221 |
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[395] | 222 | =item B<pb_log_init>
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[315] | 223 |
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[395] | 224 | This function initializes the global variables used by the pb_log function.
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[106] | 225 |
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[395] | 226 | The first parameter is the debug level which will be considered during the run of the program?
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| 227 | The second parameter is a pointer on a file descriptor used to print the log info.
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[315] | 228 |
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[396] | 229 | As an example, if you set the debug level to 2 in that function, every call to pb_log which contains a value less or equal than 2 will be printed. Calls with a value greater than 2 won't be printed.
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| 230 |
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| 231 | The call to B<pb_log_init> is typically done after getting a parameter on the CLI indicating the level of verbosity expected.
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| 232 |
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[395] | 233 | =cut
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[319] | 234 |
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[315] | 235 | sub pb_log_init {
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[77] | 236 |
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[495] | 237 | $pbdebug = shift || 0;
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| 238 | $pbLOG = shift || \*STDOUT;
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| 239 | pb_log(1,"Debug value: $pbdebug\n");
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[315] | 240 |
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| 241 | }
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| 242 |
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[396] | 243 | =item B<pb_log>
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| 244 |
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| 245 | This function logs the messages passed as the second parameter if the value passed as first parameter is lesser or equal than the value passed to the B<pb_log_init> function.
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| 246 |
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| 247 | Here is a usage example:
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| 248 |
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| 249 | pb_log_init(2,\*STDERR);
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| 250 | pb_log(1,"Hello World 1\n");
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| 251 | pb_log(2,"Hello World 2\n");
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| 252 | pb_log(3,"Hello World 3\n");
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| 253 |
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| 254 | will print:
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| 255 |
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| 256 | Hello World 1
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| 257 | Hello World 2
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| 258 |
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| 259 | =cut
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| 260 |
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[315] | 261 | sub pb_log {
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| 262 |
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| 263 | my $dlevel = shift;
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| 264 | my $msg = shift;
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| 265 |
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[495] | 266 | print $pbLOG "$msg" if ($dlevel <= $pbdebug);
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[1060] | 267 | print "$msg" if (($dlevel == 0) && ($pbLOG != \*STDOUT));
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[315] | 268 | }
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| 269 |
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[495] | 270 |
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[396] | 271 | =item B<pb_display_file>
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| 272 |
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| 273 | This function print the content of the file passed in parameter.
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[1063] | 274 | If a second parameter is given, this is the descriptor of the logfile to write to in addtion to STDOUT.
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[396] | 275 |
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| 276 | This is a cat equivalent function.
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| 277 |
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| 278 | =cut
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| 279 |
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[395] | 280 | sub pb_display_file {
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[316] | 281 |
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[395] | 282 | my $file=shift;
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[1063] | 283 | my $desc=shift || undef;
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[316] | 284 |
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[395] | 285 | return if (not -f $file);
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[1063] | 286 | my $cnt = pb_get_content($file);
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| 287 | print "$cnt\n";
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| 288 | print $desc "$cnt\n" if (defined $desc);
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[316] | 289 | }
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| 290 |
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[396] | 291 | =item B<pb_get_content>
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| 292 |
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| 293 | This function returns the content of the file passed in parameter.
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| 294 |
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| 295 | =cut
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| 296 |
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[395] | 297 | sub pb_get_content {
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[353] | 298 |
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[395] | 299 | my $file=shift;
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[353] | 300 |
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[395] | 301 | my $bkp = $/;
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| 302 | undef $/;
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| 303 | open(R,$file) || die "Unable to open $file: $!";
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| 304 | my $content=<R>;
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| 305 | close(R);
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| 306 | chomp($content);
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| 307 | $/ = $bkp;
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| 308 | return($content);
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[353] | 309 | }
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| 310 |
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[556] | 311 |
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| 312 | =item B<pb_set_content>
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| 313 |
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| 314 | This function put the content of a file into the file passed in parameter.
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| 315 |
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| 316 | =cut
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| 317 |
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| 318 | sub pb_set_content {
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| 319 |
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| 320 | my $file=shift;
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| 321 | my $content=shift;
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| 322 |
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| 323 | my $bkp = $/;
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| 324 | undef $/;
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| 325 | open(R,"> $file") || die "Unable to write to $file: $!";
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| 326 | print R "$content";
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| 327 | close(R);
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| 328 | $/ = $bkp;
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| 329 | }
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| 330 |
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[397] | 331 | =item B<pb_syntax_init>
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| 332 |
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| 333 | This function initializes the global variable used by the pb_syntax function.
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| 334 |
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| 335 | The parameter is the message string which will be printed when calling pb_syntax
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| 336 |
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| 337 | =cut
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| 338 |
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| 339 | sub pb_syntax_init {
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| 340 |
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[495] | 341 | $pbsynmsg = shift || "Error";
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[397] | 342 | }
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| 343 |
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| 344 | =item B<pb_syntax>
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| 345 |
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| 346 | This function prints the syntax expected by the application, based on pod2usage, and exits.
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| 347 | The first parameter is the return value of the exit.
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| 348 | The second parameter is the verbosity as expected by pod2usage.
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| 349 |
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| 350 | Cf: man Pod::Usage
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| 351 |
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| 352 | =cut
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| 353 |
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| 354 | sub pb_syntax {
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| 355 |
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| 356 | my $exit_status = shift || -1;
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| 357 | my $verbose_level = shift || 0;
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| 358 |
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| 359 | my $filehandle = \*STDERR;
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| 360 |
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| 361 | $filehandle = \*STDOUT if ($exit_status == 0);
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| 362 |
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[495] | 363 | pod2usage( { -message => $pbsynmsg,
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[397] | 364 | -exitval => $exit_status ,
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| 365 | -verbose => $verbose_level,
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| 366 | -output => $filehandle } );
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| 367 | }
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| 368 |
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| 369 | =item B<pb_temp_init>
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| 370 |
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| 371 | This function initializes the environemnt variable PBTMP to a random value. This directory can be safely used during the whole program, it will be removed at the end automatically.
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| 372 |
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| 373 | =cut
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| 374 |
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| 375 | sub pb_temp_init {
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| 376 |
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| 377 | if (not defined $ENV{'TMPDIR'}) {
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| 378 | $ENV{'TMPDIR'}="/tmp";
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| 379 | }
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| 380 | $ENV{'PBTMP'} = tempdir( "pb.XXXXXXXXXX", DIR => $ENV{'TMPDIR'}, CLEANUP => 1 );
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| 381 | }
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| 382 |
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[749] | 383 | =item B<pb_get_arch>
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| 384 |
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| 385 | This function returns the architecture of our local environment and
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| 386 | standardize on i386 for those platforms. It also solves issues where a i386 VE on x86_64 returns x86_64 wrongly
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| 387 |
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| 388 | =cut
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| 389 |
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| 390 | sub pb_get_arch {
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| 391 |
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| 392 | my $arch = `uname -m`;
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| 393 | chomp($arch);
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| 394 | $arch =~ s/i.86/i386/;
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[873] | 395 | # For Solaris
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| 396 | $arch =~ s/i86pc/i386/;
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[749] | 397 |
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| 398 | return($arch);
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| 399 | }
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| 400 |
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[974] | 401 | =item B<pb_check_requirements>
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| 402 |
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| 403 | This function checks that the commands needed for the subsystem are indeed present.
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[1077] | 404 | The required commands are passed as a coma separated string as first parameter.
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| 405 | The optional commands are passed as a coma separated string as second parameter.
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[974] | 406 |
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| 407 | =cut
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| 408 |
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| 409 | sub pb_check_requirements {
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| 410 |
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| 411 | my $cmds = shift || "";
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[982] | 412 | my $options = shift || "";
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[974] | 413 |
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| 414 | # cmds is a string of coma separated commands
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[982] | 415 | foreach my $file (split(/,/,$cmds)) {
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[974] | 416 | pb_check_req($file,0);
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| 417 | }
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| 418 |
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| 419 | # opts is a string of coma separated commands
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[982] | 420 | foreach my $file (split(/,/,$options)) {
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[974] | 421 | pb_check_req($file,1);
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| 422 | }
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| 423 | }
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| 424 |
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| 425 | sub pb_check_req {
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| 426 |
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| 427 | my $file = shift;
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| 428 | my $opt = shift || 1;
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| 429 | my $found = 0;
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| 430 |
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| 431 | pb_log(2,"Checking availability of $file...");
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| 432 | # Check for all dirs in the PATH
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| 433 | foreach my $p (split(/:/,$ENV{'PATH'})) {
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| 434 | $found = 1 if (-x "$p/$file");
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| 435 | }
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| 436 | if ($found eq 0) {
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| 437 | pb_log(2,"KO\n");
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| 438 | if ($opt eq 1) {
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| 439 | pb_log(2,"Unable to find optional command $file\n");
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| 440 | } else {
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| 441 | die pb_log(0,"Unable to find required command $file\n");
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| 442 | }
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| 443 | } else {
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| 444 | pb_log(2,"OK\n");
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| 445 | }
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| 446 | }
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| 447 |
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[397] | 448 | =back
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| 449 |
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| 450 | =head1 WEB SITES
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| 451 |
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| 452 | The main Web site of the project is available at L<http://www.project-builder.org/>. Bug reports should be filled using the trac instance of the project at L<http://trac.project-builder.org/>.
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| 453 |
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| 454 | =head1 USER MAILING LIST
|
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| 455 |
|
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| 456 | None exists for the moment.
|
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| 457 |
|
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| 458 | =head1 AUTHORS
|
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| 459 |
|
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| 460 | The Project-Builder.org team L<http://trac.project-builder.org/> lead by Bruno Cornec L<mailto:bruno@project-builder.org>.
|
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| 461 |
|
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| 462 | =head1 COPYRIGHT
|
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| 463 |
|
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| 464 | Project-Builder.org is distributed under the GPL v2.0 license
|
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| 465 | described in the file C<COPYING> included with the distribution.
|
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| 466 |
|
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| 467 | =cut
|
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| 468 |
|
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[2] | 469 | 1;
|
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