[3] | 1 | # |
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| 2 | # Copyright (c) 2004-2007 - Consultas, PKG.fr |
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| 3 | # |
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| 4 | # This file is part of A2P. |
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| 5 | # |
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| 6 | # A2P is free software; you can redistribute it and/or modify |
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| 7 | # it under the terms of the GNU General Public License as published by |
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| 8 | # the Free Software Foundation; either version 2 of the License, or |
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| 9 | # (at your option) any later version. |
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| 10 | # |
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| 11 | # A2P is distributed in the hope that it will be useful, |
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| 12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | # GNU General Public License for more details. |
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| 15 | # |
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| 16 | # You should have received a copy of the GNU General Public License |
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| 17 | # along with A2P; if not, write to the Free Software |
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| 18 | # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | # |
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| 20 | # $Id: Init.pm 3 2007-10-18 16:20:19Z guillaume $ |
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| 21 | # |
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| 22 | |
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| 23 | package A2P::Init; |
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| 24 | |
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| 25 | use strict ; |
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| 26 | use integer ; |
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| 27 | |
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| 28 | BEGIN { |
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| 29 | use Exporter (); |
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| 30 | |
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| 31 | our ( $VERSION , @ISA , @EXPORT , @EXPORT_OK ); |
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| 32 | |
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| 33 | $VERSION = sprintf "%s", q$Rev: 415 $ =~ /(\d[0-9.]+)\s+/ ; |
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| 34 | |
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| 35 | @ISA = qw(Exporter); |
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| 36 | @EXPORT = qw( &Init ); |
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| 37 | @EXPORT_OK = qw( &ResetInit ); |
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| 38 | } |
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| 39 | our $VERSION ; |
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| 40 | |
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| 41 | my @Shareds = () ; |
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| 42 | my @ConfFiles = () ; |
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| 43 | my %CONF = () ; |
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| 44 | |
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| 45 | ############################################################################# |
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| 46 | ## Init code - Also called when receiving a HUP signal ## |
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| 47 | ############################################################################# |
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| 48 | sub Init { |
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| 49 | return unless @Shareds or @_ ; |
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| 50 | |
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| 51 | # First call should initialize our ConfFiles list |
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| 52 | return @ConfFiles = @_ if ( ! @ConfFiles and @_ ); |
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| 53 | |
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| 54 | # We have to (re-)read our system conf |
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| 55 | my %Updated = () ; |
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| 56 | |
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| 57 | # Second call should initialize our SHARED and defaults list |
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| 58 | if ( ! %CONF and @_ ) { |
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| 59 | %CONF = @_ ; |
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| 60 | @Shareds = keys(%CONF); |
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| 61 | |
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| 62 | map { |
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| 63 | my ( $strippedkey ) = $_ =~ /^[\$](.*)$/ ; |
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| 64 | $Updated{$_} = $strippedkey ; |
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| 65 | } @Shareds ; |
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| 66 | } |
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| 67 | |
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| 68 | # Next calls will update our conf |
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| 69 | |
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| 70 | foreach my $ConfFile ( @ConfFiles ) { |
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| 71 | next if ( ! -e $ConfFile ); |
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| 72 | |
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| 73 | # Open the file for reading and scan each line for standard shell definition |
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| 74 | if (! open( *CONF , '<', $ConfFile )) { |
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| 75 | warn "Can't open '$ConfFile' for reading" ; |
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| 76 | next ; |
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| 77 | } |
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| 78 | |
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| 79 | my @lines = (<CONF>); |
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| 80 | close(CONF); |
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| 81 | |
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| 82 | @lines = grep { $_ !~ /^\s*#/ } @lines ; # Strip comments |
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| 83 | @lines = grep { /=/ } @lines ; # Keep only variable definition |
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| 84 | |
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| 85 | foreach my $key ( @Shareds ) { # Not optimized but rarely called |
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| 86 | my ( $strippedkey ) = $key =~ /^[\$](.*)$/ ; |
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| 87 | |
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| 88 | # There should be only one line |
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| 89 | foreach my $def ( grep { /^$strippedkey=/ } @lines ) { |
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| 90 | chomp $def ; |
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| 91 | #&debugdev("Analysing $def from $ConfFile conf..."); |
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| 92 | my ( $value ) = $def =~/^$strippedkey=\s*["']?([^"']*)["']?\s*$/; |
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| 93 | if ( ! defined($value) ) { |
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| 94 | warn "Bad configuration line found for '$strippedkey' var: '$def' in '$ConfFile' file" ; |
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| 95 | next ; |
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| 96 | } |
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| 97 | $value = $1 if ( $value =~ m|^(.*)/$| ); # Strip / from folders |
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| 98 | if ( $CONF{$key} ne $value ) { |
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| 99 | $CONF{$key} = $value ; |
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| 100 | #&debugdev("Updating $key to $value"); |
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| 101 | $Updated{$key} = $strippedkey ; |
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| 102 | } |
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| 103 | } |
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| 104 | } |
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| 105 | } |
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| 106 | |
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| 107 | # Get vars that are eventually defined with shell expansion |
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| 108 | my @needshellexpansion = grep { $CONF{$_} =~ /[\$]/ } @Shareds ; |
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| 109 | |
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| 110 | # Does expansion if needed |
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| 111 | foreach my $var ( @needshellexpansion ) { |
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| 112 | #&debugdev("$var has shell expansion: $CONF{$var}"); |
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| 113 | my $limitrecursion = 10 ; |
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| 114 | my $temp = "" ; |
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| 115 | while ( $limitrecursion and $CONF{$var} =~ /[\$]/ ) { |
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| 116 | $limitrecursion -- ; |
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| 117 | foreach my $key ( @Shareds ) { |
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| 118 | my ( $strippedkey ) = $key =~ /^[\$](.*)$/ ; |
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| 119 | next unless $CONF{$var} =~ m|$strippedkey| ; |
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| 120 | #&debugdev("$var has shell expansion with $key=$CONF{$key}"); |
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| 121 | $CONF{$var} =~ s|[\$]$strippedkey|$CONF{$key}| ; |
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| 122 | } |
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| 123 | } |
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| 124 | } |
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| 125 | |
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| 126 | # Returns %ENV string list to evaluate |
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| 127 | return map { |
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| 128 | my $chr = $CONF{$_} =~ /^\d+$/ ? "" : "'" ; |
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| 129 | '$ENV{' . $Updated{$_} . '} = ' . $chr . $CONF{$_} . $chr ; |
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| 130 | } keys(%Updated) ; |
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| 131 | } |
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| 132 | |
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| 133 | sub ResetInit { |
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| 134 | @Shareds = () ; |
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| 135 | @ConfFiles = () ; |
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| 136 | %CONF = () ; |
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| 137 | } |
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| 138 | |
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| 139 | 1; |
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