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package Db::Mediasurface::ReadConfig; |
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$VERSION = '0.01'; |
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use strict; |
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use vars qw( $AUTOLOAD ); |
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use Carp; |
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sub new |
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{ |
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my ($class,%arg) = @_; |
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my $self = { |
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_config_file => $arg{path} || croak("need path to config file"), |
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_config_tree => undef |
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}; |
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croak("config file does not exist") unless -T $self->{_config_file}; |
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my $obj = bless $self, $class; |
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$obj->_parse_config; |
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return $obj; |
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} |
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sub _parse_config |
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{ |
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my $self = $_[0]; |
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return if defined $self->{_config_tree}; |
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use Fcntl; |
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sysopen(CONFIG, $self->{_config_file}, O_RDONLY) |
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or croak("Couldn't open ".$self->{_config_file}." for reading: $!\n"); |
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while (my $line = ){ |
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chomp($line); |
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$line =~ s/#.*$//; |
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my ($key,$value) = split /=/, $line; |
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next unless defined $value; |
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$key =~ s/\s//g; |
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$key =~ s/\./_/g; |
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if ($value =~ /"(.*?)"/){ |
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$value = $1; |
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} elsif ($value =~ /(\d+)/) { |
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$value = $1; |
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} else { |
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$value =~ s/\s//g; |
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} |
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$value =~ s/([^\\]|^)\$([a-zA-Z_][a-zA-Z0-9_]*)/$self->{_config_tree}->{$2}/eg; |
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my $method = "set_$key"; |
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$self->$method($value); |
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} |
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close(CONFIG) |
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or croak("Couldn't close ".$self->{_config_file}.": $!\n"); |
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} |
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sub AUTOLOAD |
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{ |
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no strict "refs"; |
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my ($self, $newval) = @_; |
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if ($AUTOLOAD =~ /.*::get_([a-zA-Z0-9_]+)/) |
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{ |
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my $attr_name = $1; |
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*{$AUTOLOAD} = sub { return $_[0]->{_config_tree}->{$attr_name} }; |
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return $self->{_config_tree}->{$attr_name}; |
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} |
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if ($AUTOLOAD =~ /.*::set_([a-zA-Z0-9_]+)/) |
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{ |
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my $attr_name = $1; |
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*{$AUTOLOAD} = sub { $_[0]->{_config_tree}->{$attr_name} = $_[1]; return; }; |
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$self->{_config_tree}->{$attr_name} = $newval; |
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return; |
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} |
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} |
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1; |
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=head1 NAME |
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Db::Mediasurface::ReadConfig - reads, parses, and stores configuration from a Mediasurface ms.properties file. |
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73
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=head1 VERSION |
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This document refers to version 0.01 of DB::Mediasurface::ReadConfig, released August 3, 2001. |
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=head1 SYNOPSIS |
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use Db::Mediasurface::ReadConfig; |
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81
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my $path = '/opt/ms/3.0.2/etc/ms.properties'; |
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my $config = Db::Mediasurface::ReadConfig->new( path=>$path ); |
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85
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print('oracle user is '.$config->get_username."\n"); |
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=head1 DESCRIPTION |
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=head2 Overview |
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When supplied with a path to a Mediasurface configuration file (usually called ms.properties), this module loads the configuration details into an object, which can be interrogated at a later time. |
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93
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=head2 Constructor |
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=over 4 |
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=item $config = Db::Mediasurface::ReadConfig->new( path=>$path ); |
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99
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This class method constructs a new configuration object by reading the file at location $path. This module assumes that the configuration file is constructed in the following manner... |
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101
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Each key/value pair occurs on a single line, and the key and value are separated by an equals sign (=) and (optionally) white space. Any text on a line is ignored which follows a hash symbol (#). |
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103
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=back |
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105
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=head2 Methods |
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107
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=over 4 |
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109
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=item $value = $config->get_SOME_CONFIG_KEY; |
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Returns the value associated with a particular configuration key. If the key contained a full-stop in the config file, this is replaced by an underscore. For example, to get the value associated with jdbc.driver in the config file, use $config->get_jdbc_driver |
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=item $config->set_SOME_CONFIG_KEY($value); |
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Sets the value of a given key. Does not write the value back to the config file - no permanent damage is done ;) |
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=back |
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119
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=head1 AUTHOR |
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121
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Nigel Wetters (nwetters@cpan.org) |
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=head1 COPYRIGHT |
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Copyright (c) 2001, Nigel Wetters. All Rights Reserved. |
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This module is free software. It may be used, redistributed |
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and/or modified under the same terms as Perl itself. |
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