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#!/usr/bin/perl |
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## ------------------------------------------------------------------------ |
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## $Id$ |
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## ------------------------------------------------------------------------ |
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## $Log$ |
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## Revision 1.5 2003/02/18 19:18:50 joko |
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## + sub constructor |
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## + sub _stat |
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## + sub _exists |
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## +- rename key |
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## |
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## Revision 1.4 2003/02/11 05:15:45 joko |
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## - no Exporter any more |
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## |
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## Revision 1.3 2003/02/09 04:54:27 joko |
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## - refactored lots of code to Data::Storage::Handler::File::Basic |
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## - sorry! |
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## |
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## ------------------------------------------------------------------------ |
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package Data::Storage::Handler::File; |
package Data::Storage::Handler::File; |
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use strict; |
use strict; |
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use warnings; |
use warnings; |
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require Exporter; |
use base qw( DesignPattern::Object ); |
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our @ISA = qw( Exporter ); |
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our @EXPORT_OK = qw( |
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s2f |
use Data::Storage::Handler::File::Basic qw( s2f a2f f2s ); |
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a2f |
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); |
sub constructor { |
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my $self = shift; |
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sub s2f { |
# patch - backward compatibility |
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my $filename = shift; |
if (!$self->{filename} && $self->{path}) { |
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my $string = shift; |
$self->{filename} = $self->{path}; |
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open(FH, '>' . $filename); |
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print FH $string; |
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print FH "\n"; |
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close(FH); |
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} |
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sub f2s { |
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my $filename = shift; |
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# read file at once (be careful with big files!!!) |
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open(FH, '<' . $filename); |
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my @buf_arr = <FH>; |
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my $buf = join("", @buf_arr); |
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close(FH); |
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return $buf; |
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} |
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sub a2f { |
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my $filename = shift; |
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my $string = shift; |
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open(FH, '>>' . $filename) or do { |
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print "Could not append to \"$filename\"!", "\n"; |
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print "Log-Message was: "; |
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print $string if $string; |
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print "\n"; |
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return; |
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}; |
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#print FH "\n"; |
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print FH $string; |
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print FH "\n"; |
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close(FH); |
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return 1; |
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} |
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sub ris { |
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my $string = shift; |
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my $rules = shift; |
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our $ris_result = 1; |
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if (ref $rules eq 'HASH') { |
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my @re_find = keys %{$rules}; |
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# replace all keys with substitutes from hash "%re_table" |
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foreach my $find (@re_find) { |
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my $replace = $rules->{$find}; |
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$ris_result &= ($string =~ s/$find/$replace/g); |
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} |
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} |
} |
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} |
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if (ref $rules eq 'ARRAY') { |
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foreach my $rule (@{$rules}) { |
sub _stat { |
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my $find = $rule->[0]; |
my $self = shift; |
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my $replace = $rule->[1]; |
if (-e $self->{filename}) { |
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$ris_result &= ($string =~ s/$find/$replace/g); |
$self->{_meta}->{exists} = 1; |
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} |
} else { |
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$self->{_meta}->{exists} = 0; |
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} |
} |
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return $string; |
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} |
} |
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sub rif { |
sub _read { |
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my $filename = shift; |
my $self = shift; |
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my $rules = shift; |
$self->_stat(); |
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my $out_suffix = shift; |
if ($self->exists()) { |
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$self->{_buffer} = f2s($self->{filename}); |
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} |
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#$self->{_buffer_orig} = f2s($self->{filename}); |
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} |
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my $outfile = $filename; |
sub toString { |
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$outfile .= '.' . $out_suffix if ($out_suffix); |
my $self = shift; |
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$self->_read(); |
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return $self->{_buffer}; |
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} |
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my $buf = f2s($filename); |
sub addSuffix { |
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$buf = ris($buf, $rules); |
my $self = shift; |
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s2f($outfile, $buf); |
my $suffix = shift; |
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$self->{filename} .= ".$suffix"; |
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} |
} |
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sub findKeyEntries { |
sub save { |
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my $string = shift; |
my $self = shift; |
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my $pattern = shift; |
if ($self->{_buffer}) { |
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my @arr = split("\n", $string); |
s2f($self->{filename}, $self->{_buffer}); |
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my @entries; |
} else { |
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foreach (@arr) { |
print "please load $self->{filename} before saving.", "\n"; |
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chomp; |
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#print "l: ", $_, "\n"; |
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if (m/$pattern/) { |
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push @entries, $1; |
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} |
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} |
} |
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return \@entries; |
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} |
} |
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# --------------------------------- |
sub backup { |
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# is a context-entry in a file? |
my $self = shift; |
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# a "context-entry" is an entry identified |
my $options = shift; |
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# by a certain keystring, which itself |
my $path = $self->{filename}; |
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# is detected dynamically |
$path .= '.' . $options->{suffix} if $options->{suffix}; |
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sub isEntryInFile { |
s2f($path, $self->{_buffer_orig}); |
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} |
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my $chk = shift; |
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my $content_current = f2s($chk->{filename}); |
sub matches { |
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my $self = shift; |
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# try to find all key-entries via patterns which are "entry-identifiers" |
my $pattern = shift; |
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if (my @keys = @{ findKeyEntries($chk->{'out'}, $chk->{'pattern'}{'EntryIdent'}) }) { |
$self->_read(); |
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# iterate through all "entry-identifiers" |
my $eval = '$self->{_buffer} =~ ' . $pattern . ';'; |
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foreach (@keys) { |
if (eval($eval)) { return 1; } |
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my $pattern = $chk->{'pattern'}{'EntryCheck'}; |
} |
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$pattern =~ s/\@\@KEY\@\@/$_/; |
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my $bool_AlreadyThere = ($content_current =~ m/$pattern/); |
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if ($bool_AlreadyThere) { |
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$chk->{'EntryFound'} = $_; |
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return 1; |
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} |
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} |
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} |
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sub exists { |
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my $self = shift; |
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$self->_stat(); |
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return $self->{_meta}->{exists}; |
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} |
} |
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1; |
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1; |
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__END__ |
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