[405] | 1 | #!/usr/bin/perl -w
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| 2 | #
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| 3 | # ProjectBuilder Conf module
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| 4 | # Conf files subroutines brought by the the Project-Builder project
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| 5 | # which can be easily used by wahtever perl project
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| 6 | #
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[2032] | 7 | # Copyright B. Cornec 2007-2016
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[1528] | 8 | # Eric Anderson's changes are (c) Copyright 2012 Hewlett Packard
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| 9 | # Provided under the GPL v2
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| 10 | #
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[405] | 11 | # $Id$
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| 12 | #
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| 13 |
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| 14 | package ProjectBuilder::Conf;
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| 15 |
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| 16 | use strict;
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[1507] | 17 | use Carp 'confess';
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[405] | 18 | use Data::Dumper;
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| 19 | use ProjectBuilder::Base;
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[1148] | 20 | use ProjectBuilder::Version;
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[2241] | 21 | #use YAML;
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[405] | 22 |
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| 23 | # Inherit from the "Exporter" module which handles exporting functions.
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| 24 |
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[2241] | 25 | use vars qw($VERSION $REVISION @ISA @EXPORT);
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[405] | 26 | use Exporter;
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| 27 |
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| 28 | # Export, by default, all the functions into the namespace of
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| 29 | # any code which uses this module.
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| 30 |
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| 31 | our @ISA = qw(Exporter);
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[2154] | 32 | our @EXPORT = qw(pb_conf_init pb_conf_add pb_conf_read pb_conf_read_if pb_conf_write pb_conf_get pb_conf_get_if pb_conf_get_all pb_conf_get_hash pb_conf_cache);
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[2241] | 33 | ($VERSION,$REVISION) = pb_version_init();
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[405] | 34 |
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[898] | 35 | # Global hash of conf files
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| 36 | # Key is the conf file name
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| 37 | # Value is its rank
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| 38 | my %pbconffiles;
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[409] | 39 |
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[1495] | 40 | # Global hash of conf file content
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| 41 | # Key is the config keyword
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| 42 | # Value is a hash whose key depends on the nature of the config keyword as documented
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| 43 | # and value is the confguration value
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[898] | 44 | # We consider that values can not change during the life of pb
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[1495] | 45 | my $h = ();
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[898] | 46 |
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[405] | 47 | =pod
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| 48 |
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| 49 | =head1 NAME
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| 50 |
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| 51 | ProjectBuilder::Conf, part of the project-builder.org - module dealing with configuration files
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| 52 |
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| 53 | =head1 DESCRIPTION
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| 54 |
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| 55 | This modules provides functions dealing with configuration files.
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| 56 |
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| 57 | =head1 SYNOPSIS
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| 58 |
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| 59 | use ProjectBuilder::Conf;
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| 60 |
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| 61 | #
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| 62 | # Read hash codes of values from a configuration file and return table of pointers
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| 63 | #
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| 64 | my ($k1, $k2) = pb_conf_read_if("$ENV{'HOME'}/.pbrc","key1","key2");
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| 65 | my ($k) = pb_conf_read("$ENV{'HOME'}/.pbrc","key");
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| 66 |
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| 67 | =head1 USAGE
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| 68 |
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[2152] | 69 | The configuration files are loaded in a specific order from most generic to the most specific
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| 70 | to allow for overwrite to work:
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| 71 |
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[2250] | 72 | For recent versions of pb (>= 0.15):
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| 73 | 1. /usr/share/pb/pb.yml - the read-only system conf file provided by install
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| 74 | 2. /etc/pb/pb.yml - the same global conf file given to the sysadmin in order to make system wide modifications
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| 75 | 3. /path/to/project.yml - Configuration file for the project we're building for
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| 76 | 4. /vm|vepath/to/.pbrc.yml - configuration file for VM, VE or RM specific parameters. Cumulative should be orthogonal
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| 77 | 5. $HOME/.pbrc.yml - user's configuration file
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| 78 |
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| 79 | For versions of pb up to 0.14:
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[2241] | 80 | 1. /usr/share/pb/pb.conf - the read-only system conf file provided by install
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| 81 | 2. /etc/pb/pb.conf - the same global conf file given to the sysadmin in order to make system wide modifications
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[2152] | 82 | 3. /path/to/project.pb - Configuration file for the project we're building for
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| 83 | 4. /(vm|ve|rm)path/to/.pbrc - configuration file for VM, VE or RM specific parameters. Cumulative should be orthogonal
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| 84 | 5. $HOME/.pbrc - user's configuration file
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| 85 |
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[2250] | 86 | The format of the configuration file is as follows:
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| 87 |
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| 88 | For recent versions of pb (>= 0.15):
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| 89 | YAML format is now used - The version of the configuration files is
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| 90 |
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| 91 | Supposing the file is called "$ENV{'HOME'}/.pbrc.yml", containing the following:
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| 92 |
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| 93 | $ cat $HOME/.pbrc.yml
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| 94 | ---
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| 95 | pbver:
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| 96 | - pb: 3
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| 97 | - default: 1
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| 98 | pblist:
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| 99 | - pb: 12,25
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| 100 |
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| 101 | calling it like this:
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| 102 |
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| 103 | my ($k1, $k2) = pb_conf_read_if("$ENV{'HOME'}/.pbrc.yml","pbver","pblist");
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| 104 |
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| 105 | will allow to get the mapping:
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| 106 |
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| 107 | $k1->{'pb'} contains 3
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| 108 | $k1->{'default'} contains 1
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| 109 | $k2->{'pb'} contains 12,25
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| 110 |
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| 111 | For versions of pb up to 0.14:
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| 112 | An own format was used - The version of the configuration files is 0
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| 113 |
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| 114 | key tag = value1,value2,...
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| 115 |
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| 116 | Supposing the file is called "$ENV{'HOME'}/.pbrc", containing the following:
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| 117 |
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| 118 | $ cat $HOME/.pbrc
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| 119 | pbver pb = 3
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| 120 | pbver default = 1
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| 121 | pblist pb = 12,25
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| 122 |
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| 123 | calling it like this:
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| 124 |
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| 125 | my ($k1, $k2) = pb_conf_read_if("$ENV{'HOME'}/.pbrc","pbver","pblist");
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| 126 |
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| 127 | will allow to get the mapping:
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| 128 |
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| 129 | $k1->{'pb'} contains 3
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| 130 | $k1->{'default'} contains 1
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| 131 | $k2->{'pb'} contains 12,25
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| 132 |
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| 133 | Valid chars for keys and tags are letters, numbers, '-' and '_'.
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| 134 |
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[405] | 135 | =over 4
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| 136 |
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[505] | 137 | =item B<pb_conf_init>
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| 138 |
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[898] | 139 | This function setup the environment PBPROJ for project-builder function usage from other projects.
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[505] | 140 | The first parameter is the project name.
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[898] | 141 | It sets up environment variables (PBPROJ)
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[505] | 142 |
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| 143 | =cut
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| 144 |
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| 145 | sub pb_conf_init {
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| 146 |
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[1907] | 147 | my $proj=shift;
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[505] | 148 |
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[1495] | 149 | pb_log(1,"Entering pb_conf_init\n");
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[1584] | 150 | #
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| 151 | # Check project name
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| 152 | # Could be with env var PBPROJ
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| 153 | # or option -p
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| 154 | # if not defined take the first in conf file
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| 155 | #
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| 156 | if ((defined $ENV{'PBPROJ'}) &&
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| 157 | (not defined $proj)) {
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| 158 | pb_log(2,"PBPROJ env var setup ($ENV{'PBPROJ'}) so using it\n");
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| 159 | $proj = $ENV{'PBPROJ'};
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| 160 | }
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| 161 |
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[505] | 162 | if (defined $proj) {
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| 163 | $ENV{'PBPROJ'} = $proj;
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| 164 | } else {
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| 165 | $ENV{'PBPROJ'} = "default";
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| 166 | }
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[1495] | 167 | pb_log(1,"PBPROJ = $ENV{'PBPROJ'}\n");
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[505] | 168 | }
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| 169 |
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| 170 |
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[1495] | 171 | =item B<pb_conf_cache>
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[505] | 172 |
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[2250] | 173 | This function caches the configuration file content passed as first parameter into the hash passed in second parameter
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[1495] | 174 | It returns the modified hash
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| 175 | Can be used in correlation with the %h hash to store permanently values or not if temporarily.
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| 176 |
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| 177 | =cut
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| 178 |
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| 179 | sub pb_conf_cache {
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| 180 |
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| 181 | my $cf = shift;
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| 182 | my $lh = shift;
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| 183 |
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[2249] | 184 | my $ldfunc;
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| 185 |
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[2077] | 186 | # Read the content of the config file and cache it in the %h hash then available for queries
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[2241] | 187 | if ($confver < 0.15) {
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[2176] | 188 | open(CONF,$cf) || confess "Unable to open $cf";
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| 189 | # This is the original conf file format for versions up to 0.14
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| 190 | while(<CONF>) {
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| 191 | next if (/^#/);
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| 192 | if (/^\s*([A-z0-9-_.]+)\s+([[A-z0-9-_.\?\[\]\*\+\\]+)\s*=\s*(.*)$/) {
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| 193 | pb_log(3,"DEBUG: 1:$1 2:$2 3:$3\n");
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| 194 | $lh->{$1}->{$2}=$3;
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| 195 | }
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[1495] | 196 | }
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[2176] | 197 | close(CONF);
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| 198 | } else {
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[2249] | 199 | eval {
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| 200 | require YAML;
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| 201 | YAML->import();
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| 202 | };
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| 203 | if ($@) {
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| 204 | eval {
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| 205 | # No YAML found using a more std but less complete one. Old perl only
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| 206 | require Module::Build::YAML;
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| 207 | Module::Build::YAML->import();
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| 208 | };
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| 209 | if ($@) {
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| 210 | die "Unable to handle YAML configuration files without a YAML.pm module\n";
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| 211 | } else {
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| 212 | $ldfunc = \&Module::Build::YAML::LoadFile;
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| 213 | }
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| 214 | } else {
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| 215 | $ldfunc = \&YAML::LoadFile;
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| 216 | }
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| 217 |
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| 218 | $lh = $ldfunc->($cf);
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[1495] | 219 | }
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| 220 | return($lh);
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| 221 | }
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| 222 |
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[409] | 223 | =item B<pb_conf_add>
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| 224 |
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[1495] | 225 | This function adds the configuration file to the list last, and cache their content in the %h hash
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[409] | 226 |
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| 227 | =cut
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| 228 |
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| 229 | sub pb_conf_add {
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| 230 |
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[415] | 231 | pb_log(2,"DEBUG: pb_conf_add with ".Dumper(@_)."\n");
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[1495] | 232 | my $lh;
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[898] | 233 |
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| 234 | foreach my $cf (@_) {
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[1495] | 235 | if (! -r $cf) {
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| 236 | pb_log(0,"WARNING: pb_conf_add can not read $cf\n");
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| 237 | next;
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| 238 | }
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[898] | 239 | # Skip already used conf files
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[1495] | 240 | return($lh) if (defined $pbconffiles{$cf});
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| 241 |
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[2154] | 242 | # The new conf file overload values already managed
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[898] | 243 | my $num = keys %pbconffiles;
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[1495] | 244 | pb_log(2,"DEBUG: pb_conf_cache of $cf at position $num\n");
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[898] | 245 | $pbconffiles{$cf} = $num;
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[1495] | 246 |
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| 247 | # Read the content of the config file
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| 248 | $lh = pb_conf_cache($cf,$lh);
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| 249 | # and cache it in the %h hash for further queries but after the previous
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| 250 | # as we load conf files in reverse order (most precise first)
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| 251 | pb_conf_add_last_in_hash($lh)
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[409] | 252 | }
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[898] | 253 | }
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[409] | 254 |
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[1495] | 255 |
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[405] | 256 | =item B<pb_conf_read_if>
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| 257 |
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| 258 | This function returns a table of pointers on hashes
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| 259 | corresponding to the keys in a configuration file passed in parameter.
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| 260 | If that file doesn't exist, it returns undef.
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| 261 |
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[1495] | 262 | The file read is forgotten after its usage. If you want permanent caching of the data, use pb_conf_add then pb_conf_get
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| 263 |
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[405] | 264 | =cut
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| 265 |
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| 266 | sub pb_conf_read_if {
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| 267 |
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| 268 | my $conffile = shift;
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| 269 | my @param = @_;
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| 270 |
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| 271 | open(CONF,$conffile) || return((undef));
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| 272 | close(CONF);
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| 273 | return(pb_conf_read($conffile,@param));
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| 274 | }
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| 275 |
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| 276 | =item B<pb_conf_read>
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| 277 |
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| 278 | This function is similar to B<pb_conf_read_if> except that it dies when the file in parameter doesn't exist.
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| 279 |
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| 280 | =cut
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| 281 |
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| 282 | sub pb_conf_read {
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| 283 |
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| 284 | my $conffile = shift;
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| 285 | my @param = @_;
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| 286 | my @ptr;
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[1495] | 287 | my $lh;
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[405] | 288 |
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[1495] | 289 | $lh = pb_conf_cache($conffile,$lh);
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| 290 |
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| 291 | foreach my $param (@param) {
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| 292 | push @ptr,$lh->{$param};
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[405] | 293 | }
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[1495] | 294 | return(@ptr);
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| 295 | }
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[405] | 296 |
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[1904] | 297 | =item B<pb_conf_write>
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[1495] | 298 |
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[1904] | 299 | This function writes in the file passed ias first parameter the hash of values passed as second parameter
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[1495] | 300 |
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[1904] | 301 | =cut
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| 302 |
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| 303 | sub pb_conf_write {
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| 304 |
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| 305 | my $conffile = shift;
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[1905] | 306 | my $h = shift;
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[2249] | 307 | my $dpfunc;
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[1904] | 308 |
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[1905] | 309 | confess "No configuration file defined to write into !" if (not defined $conffile);
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| 310 | confess "No hash defined to read from !" if (not defined $h);
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| 311 | open(CONF,"> $conffile") || confess "Unable to write into $conffile";
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[1904] | 312 |
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[2241] | 313 | if ($confver < 0.15) {
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[2176] | 314 | # This is the original conf file format for versions up to 0.14
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| 315 | foreach my $p (sort keys %$h) {
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| 316 | my $j = $h->{$p};
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| 317 | foreach my $k (sort keys %$j) {
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| 318 | print CONF "$p $k = $j->{$k}\n";
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| 319 | }
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[1904] | 320 | }
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[2176] | 321 | } else {
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| 322 | # This is the new YAML format
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[2249] | 323 | eval {
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| 324 | require YAML;
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| 325 | YAML->import();
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| 326 | };
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| 327 | if ($@) {
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| 328 | eval {
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| 329 | # No YAML found using a more std but less complete one. Old perl only
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| 330 | require Module::Build::YAML;
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| 331 | Module::Build::YAML->import();
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| 332 | };
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| 333 | if ($@) {
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| 334 | die "Unable to handle YAML configuration files without a YAML.pm module\n";
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| 335 | } else {
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| 336 | $dpfunc = \&Module::Build::YAML::Dump;
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| 337 | }
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| 338 | } else {
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| 339 | $dpfunc = \&YAML::Dump;
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| 340 | }
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| 341 |
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| 342 | print CONF $dpfunc->($h);
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[1904] | 343 | }
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| 344 | close(CONF);
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| 345 | }
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| 346 |
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| 347 |
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| 348 |
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[1495] | 349 | =item B<pb_conf_get_in_hash_if>
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| 350 |
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[1594] | 351 | This function returns a table, corresponding to a set of values queried in the hash passed in parameter or undef if it doesn't exist.
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| 352 | It takes a table of keys as an input parameter.
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[1495] | 353 |
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| 354 | =cut
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| 355 |
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| 356 | sub pb_conf_get_in_hash_if {
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| 357 |
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| 358 | my $lh = shift || return(());
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| 359 | my @params = @_;
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| 360 | my @ptr = ();
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| 361 |
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| 362 | pb_log(2,"DEBUG: pb_conf_get_in_hash_if on params ".join(' ',@params)."\n");
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| 363 | foreach my $k (@params) {
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| 364 | push @ptr,$lh->{$k};
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[405] | 365 | }
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[1495] | 366 |
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| 367 | pb_log(2,"DEBUG: pb_conf_get_in_hash_if returns\n".Dumper(@ptr));
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[405] | 368 | return(@ptr);
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| 369 | }
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| 370 |
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[1495] | 371 |
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| 372 |
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[409] | 373 | =item B<pb_conf_get_if>
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[405] | 374 |
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[1495] | 375 | This function returns a table, corresponding to a set of values queried in the %h hash or undef if it doen't exist. It takes a table of keys as an input parameter.
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[405] | 376 |
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[409] | 377 | =cut
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| 378 |
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| 379 | sub pb_conf_get_if {
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| 380 |
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[2154] | 381 | my @param = @_;
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| 382 | my @return = pb_conf_get_in_hash_if($h,@_);
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| 383 | my $proj = undef;
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| 384 |
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| 385 | if (not defined $ENV{'PBPROJ'}) {
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| 386 | $proj = "unknown";
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| 387 | } else {
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| 388 | $proj = $ENV{'PBPROJ'};
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[405] | 389 | }
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[409] | 390 |
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[2154] | 391 | foreach my $i (0..$#param) {
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| 392 | if (not defined $return[$i]->{$proj}) {
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| 393 | $return[$i]->{$proj} = $return[$i]->{'default'} if (defined $return[$i]->{'default'});
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| 394 | }
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| 395 | }
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| 396 | return(@return);
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| 397 | }
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| 398 |
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[1495] | 399 | =item B<pb_conf_add_last_in_hash>
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[405] | 400 |
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[1495] | 401 | This function merges the values passed in the hash parameter into the %h hash, but only if itdoesn't already contain a value, or if the value is more precise (real value instead of default)
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[405] | 402 |
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[1495] | 403 | It is used internally by pb_conf_add and is not exported.
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[409] | 404 |
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| 405 | =cut
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| 406 |
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[1495] | 407 | sub pb_conf_add_last_in_hash {
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[409] | 408 |
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[1907] | 409 | my $ptr = shift;
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[409] | 410 |
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[1495] | 411 | return if (not defined $ptr);
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| 412 | # TODO: test $ptr is a hash pointer
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[405] | 413 |
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[1509] | 414 | # When called without correct initialization, try to work anyway with default as project
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| 415 | pb_conf_init("default") if (not defined $ENV{'PBPROJ'});
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| 416 |
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[1495] | 417 | my @params = (sort keys %$ptr);
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[405] | 418 |
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[1495] | 419 | # Everything is returned via @h
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| 420 | # @h contains the values overloading what @ptr may contain.
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[2154] | 421 | my @h = pb_conf_get_in_hash_if($h,@params);
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[1495] | 422 | my @ptr = pb_conf_get_in_hash_if($ptr,@params);
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[409] | 423 |
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[405] | 424 | my $p1;
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| 425 | my $p2;
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| 426 |
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[1495] | 427 | pb_log(2,"DEBUG: pb_conf_add_last_in_hash params: ".Dumper(@params)."\n");
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[2154] | 428 | pb_log(2,"DEBUG: pb_conf_add_last_in_hash current hash: ".Dumper(@h)."\n");
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| 429 | pb_log(2,"DEBUG: pb_conf_add_last_in_hash new inputs: ".Dumper(@ptr)."\n");
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[405] | 430 |
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[1495] | 431 | foreach my $i (0..$#params) {
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| 432 | $p1 = $h[$i];
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| 433 | $p2 = $ptr[$i];
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[2154] | 434 | # Always try to take the param from h in priority
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[1495] | 435 | # in order to mask what could be defined already in ptr
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[405] | 436 | if (not defined $p2) {
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[415] | 437 | # exit if no p1 either
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[1509] | 438 | next if (not defined $p1);
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[405] | 439 | } else {
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[409] | 440 | # Ref found in p2
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[405] | 441 | if (not defined $p1) {
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[409] | 442 | # No ref in p1 so use p2's value
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[405] | 443 | $p1 = $p2;
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| 444 | } else {
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| 445 | # Both are defined - handling the overloading
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[2154] | 446 | # Now copy back into p1 all p2 content
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| 447 | # as p1 content always has priority over p2
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[405] | 448 | if (not defined $p1->{$ENV{'PBPROJ'}}) {
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| 449 | if (defined $p2->{$ENV{'PBPROJ'}}) {
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[1594] | 450 | $p1->{$ENV{'PBPROJ'}} = $p2->{$ENV{'PBPROJ'}};
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[405] | 451 | }
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| 452 | }
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| 453 | # Now copy back into p1 all p2 content which doesn't exist in p1
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[2154] | 454 | # # p1 content always has priority over p2
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[405] | 455 | foreach my $k (keys %$p2) {
|
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| 456 | $p1->{$k} = $p2->{$k} if (not defined $p1->{$k});
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| 457 | }
|
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| 458 | }
|
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| 459 | }
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[1495] | 460 | $h->{$params[$i]} = $p1;
|
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[405] | 461 | }
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[1495] | 462 | pb_log(2,"DEBUG: pb_conf_add_last_in_hash output: ".Dumper($h)."\n");
|
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[405] | 463 | }
|
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| 464 |
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[409] | 465 | =item B<pb_conf_get>
|
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[405] | 466 |
|
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[409] | 467 | This function is the same B<pb_conf_get_if>, except that it tests each returned value as they need to exist in that case.
|
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| 468 |
|
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| 469 | =cut
|
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| 470 |
|
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| 471 | sub pb_conf_get {
|
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| 472 |
|
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| 473 | my @param = @_;
|
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| 474 | my @return = pb_conf_get_if(@param);
|
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[932] | 475 | my $proj = undef;
|
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[409] | 476 |
|
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[932] | 477 | if (not defined $ENV{'PBPROJ'}) {
|
---|
| 478 | $proj = "unknown";
|
---|
| 479 | } else {
|
---|
| 480 | $proj = $ENV{'PBPROJ'};
|
---|
| 481 | }
|
---|
[409] | 482 |
|
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[1538] | 483 | confess "No params found for $proj" if (not @return);
|
---|
[932] | 484 |
|
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[409] | 485 | foreach my $i (0..$#param) {
|
---|
[1507] | 486 | confess "No $param[$i] defined for $proj" if (not defined $return[$i]);
|
---|
[409] | 487 | }
|
---|
| 488 | return(@return);
|
---|
| 489 | }
|
---|
| 490 |
|
---|
[1495] | 491 |
|
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[1694] | 492 | =item B<pb_conf_get_all>
|
---|
| 493 |
|
---|
[2077] | 494 | This function returns an array with all configuration parameters
|
---|
[1694] | 495 |
|
---|
| 496 | =cut
|
---|
| 497 |
|
---|
| 498 | sub pb_conf_get_all {
|
---|
| 499 |
|
---|
| 500 | return(sort keys %$h);
|
---|
| 501 | }
|
---|
| 502 |
|
---|
[2077] | 503 |
|
---|
| 504 | =item B<pb_conf_get_hash>
|
---|
| 505 |
|
---|
| 506 | This function returns a pointer to the hash with all configuration parameters
|
---|
| 507 |
|
---|
| 508 | =cut
|
---|
| 509 |
|
---|
| 510 | sub pb_conf_get_hash {
|
---|
| 511 |
|
---|
| 512 | return($h);
|
---|
| 513 | }
|
---|
| 514 |
|
---|
[405] | 515 | =back
|
---|
| 516 |
|
---|
| 517 | =head1 WEB SITES
|
---|
| 518 |
|
---|
| 519 | 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/>.
|
---|
| 520 |
|
---|
| 521 | =head1 USER MAILING LIST
|
---|
| 522 |
|
---|
| 523 | None exists for the moment.
|
---|
| 524 |
|
---|
| 525 | =head1 AUTHORS
|
---|
| 526 |
|
---|
| 527 | The Project-Builder.org team L<http://trac.project-builder.org/> lead by Bruno Cornec L<mailto:bruno@project-builder.org>.
|
---|
| 528 |
|
---|
| 529 | =head1 COPYRIGHT
|
---|
| 530 |
|
---|
| 531 | Project-Builder.org is distributed under the GPL v2.0 license
|
---|
| 532 | described in the file C<COPYING> included with the distribution.
|
---|
| 533 |
|
---|
| 534 | =cut
|
---|
| 535 |
|
---|
| 536 |
|
---|
| 537 | 1;
|
---|