159 lines
4.6 KiB
Perl
159 lines
4.6 KiB
Perl
# ======================================================================
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# Perl SOE config file access
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# Copyright 2003, Sony Online Entertainment
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# All rights reserved.
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# ======================================================================
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package ConfigFile;
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use strict;
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# ======================================================================
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# Setup variables that can be imported by Exporter into user modules.
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# ======================================================================
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use vars qw(@ISA @EXPORT_OK $VERSION);
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use Exporter;
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$VERSION = 1.00;
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@ISA = qw(Exporter);
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# These symbols are okay to export if specifically requested.
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@EXPORT_OK = qw(&processConfigFile &getVariableAsArray &getVariablesMatchingRegex);
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# ======================================================================
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# ConfigFile private variables.
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# ======================================================================
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my %sectionHash;
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my $debug = 0;
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my $currentSectionName = "global";
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# ======================================================================
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# ConfigFile public functions.
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# ======================================================================
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# Forward declare this so it can be called within processConfigFile.
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sub processConfigFile;
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sub processConfigFile
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{
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my $fileName = shift;
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print "BEGIN: processing file [$fileName].\n" if $debug;
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# Convert backslashes to forward slashes.
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$fileName =~ s!\\!/!g;
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# Strip off directory path for use in include resolution.
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my $directoryPath = $fileName;
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$directoryPath =~ s!^(.*/)[^/]+$!$1!;
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my $file;
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open($file, '<' . $fileName) or die "failed to open file [$fileName]: $!";
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while (<$file>)
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{
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chomp();
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my $line = $_;
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if ($line =~ m/\.include\s*\"([^\"]*)\"/)
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{
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my $fullIncludePath = $directoryPath . $1;
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print "Found include directive for file [$1], using full path [$fullIncludePath].\n" if $debug;
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processConfigFile $fullIncludePath;
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}
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elsif ($line =~ m/\[\s*(\w+)\s*\]/)
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{
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print "Found start of section [$1]\n" if $debug;
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$currentSectionName = $1;
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}
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elsif ($line =~ m/\s*(\w+)\s*=\s*([^\s]+)/)
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{
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print "\tvariable [$1] = [$2]\n" if $debug;
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# Make sure array reference exists for this section variable.
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if (!defined($sectionHash{$currentSectionName}->{$1}))
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{
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$sectionHash{$currentSectionName}->{$1} = [];
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}
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# Add value to array of values for this given section variable name.
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my $arrayRef = $sectionHash{$currentSectionName}->{$1};
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push(@$arrayRef,$2);
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}
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}
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close($file);
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print "END: processing file [$fileName].\n" if $debug;
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}
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# ----------------------------------------------------------------------
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# @syntax getValueAsArray(sectionName,variableName)
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#
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# @return an array containing copies of all values assigned to the
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# specified variable, one value per array entry.
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# ----------------------------------------------------------------------
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sub getVariableAsArray
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{
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# Get hash mapping variables to value arrays for the given section name.
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my $sectionName = shift;
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if (!exists $sectionHash{$sectionName})
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{
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# Section name didn't appear.
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return ();
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}
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my $sectionHashRef = $sectionHash{$sectionName};
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# Get array of values for the specified variable name.
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my $variableName = shift;
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if (!exists $$sectionHashRef{$variableName})
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{
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# Variable name didn't appear in section.
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return ();
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}
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my $valueArrayRef = $$sectionHashRef{$variableName};
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# Return a copy of the value array.
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return @$valueArrayRef;
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}
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# ----------------------------------------------------------------------
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# @syntax getVariablesMatchingRegex(sectionName, variableNameRegex)
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#
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# @return a hash of all variables with a name matching variableNameRegex
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# within the given section name. Each key is the name of a variable;
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# the value for each key is an array reference where the array contains
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# copies of all values assigned to the variable name.
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# ----------------------------------------------------------------------
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sub getVariablesMatchingRegex
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{
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# Get hash mapping variables to value arrays for the given section name.
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my $sectionName = shift;
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if (!exists $sectionHash{$sectionName})
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{
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# Section name didn't appear.
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return ();
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}
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my $sectionHashRef = $sectionHash{$sectionName};
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# Test all variables in the section against $variableNameRegex.
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my $variableNameRegex = shift;
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my %returnHash = ();
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foreach my $variableName (keys %$sectionHashRef)
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{
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if ($variableName =~ m/$variableNameRegex/)
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{
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# Return a reference to an array containing value entries for the variable.
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$returnHash{$variableName} = [ getVariableAsArray($sectionName, $variableName) ];
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}
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}
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return %returnHash;
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}
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# ======================================================================
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1;
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