| 1 |
joko |
1.1 |
## ------------------------------------------------------------------------ |
| 2 |
joko |
1.3 |
## $Id: Group.pm,v 1.2 2003/02/14 14:17:42 joko Exp $ |
| 3 |
joko |
1.1 |
## ------------------------------------------------------------------------ |
| 4 |
joko |
1.2 |
## $Log: Group.pm,v $ |
| 5 |
joko |
1.3 |
## Revision 1.2 2003/02/14 14:17:42 joko |
| 6 |
|
|
## + more warnings and verbosing |
| 7 |
|
|
## |
| 8 |
joko |
1.2 |
## Revision 1.1 2002/12/22 14:16:39 joko |
| 9 |
|
|
## + initial check-in |
| 10 |
|
|
## |
| 11 |
joko |
1.1 |
## ------------------------------------------------------------------------ |
| 12 |
|
|
|
| 13 |
|
|
|
| 14 |
|
|
package Regexp::Group; |
| 15 |
|
|
|
| 16 |
|
|
use strict; |
| 17 |
|
|
use warnings; |
| 18 |
|
|
|
| 19 |
joko |
1.3 |
use base qw( DesignPattern::Logger ); |
| 20 |
joko |
1.1 |
|
| 21 |
|
|
|
| 22 |
|
|
use Data::Dumper; |
| 23 |
|
|
|
| 24 |
|
|
use Data::Compare::Struct qw( isEmpty ); |
| 25 |
|
|
|
| 26 |
|
|
my @patterns; |
| 27 |
|
|
|
| 28 |
|
|
# ------------ common perl object constructor ------------ |
| 29 |
|
|
sub new { |
| 30 |
|
|
my $invocant = shift; |
| 31 |
|
|
my $class = ref($invocant) || $invocant; |
| 32 |
|
|
my @args = (); |
| 33 |
|
|
@_ && (@args = @_); |
| 34 |
|
|
#$logger->debug( __PACKAGE__ . "->new( @args )" ); # this is not "common"! |
| 35 |
|
|
my $self = { @_ }; |
| 36 |
|
|
bless $self, $class; |
| 37 |
|
|
$self->{caller} = caller; |
| 38 |
|
|
|
| 39 |
|
|
#print Dumper(caller(2)); |
| 40 |
|
|
#exit; |
| 41 |
|
|
|
| 42 |
|
|
$self->_init(); |
| 43 |
|
|
return $self; |
| 44 |
|
|
} |
| 45 |
|
|
|
| 46 |
|
|
sub _init { |
| 47 |
|
|
my $self = shift; |
| 48 |
|
|
|
| 49 |
|
|
# TODO/REVIEW: compile patterns? |
| 50 |
|
|
#@patterns = map{ qr/$_/ } @patterns; |
| 51 |
|
|
|
| 52 |
|
|
# dereference main/raw data (payload) |
| 53 |
|
|
$self->{data} = ${$self->{data}}; |
| 54 |
|
|
} |
| 55 |
|
|
|
| 56 |
|
|
sub scan { |
| 57 |
|
|
my $self = shift; |
| 58 |
|
|
my $stepkeys = shift; |
| 59 |
|
|
my $coderef = shift; |
| 60 |
|
|
|
| 61 |
|
|
#my $nodecount_default = shift; |
| 62 |
|
|
my $nodecount_default = 19; |
| 63 |
|
|
|
| 64 |
|
|
#print "SCAN", "\n"; |
| 65 |
|
|
#print $self->{pattern}, "\n"; |
| 66 |
|
|
$self->{result} = []; |
| 67 |
|
|
$self->{result_raw} = []; |
| 68 |
|
|
|
| 69 |
|
|
# configure tracing |
| 70 |
|
|
# respects additional trace-options passed to _trace-method |
| 71 |
|
|
$self->{TRACE_OPTIONS} = 1; |
| 72 |
|
|
# disables _any_ tracing - even if sub-conditions evaluate to true values |
| 73 |
|
|
$self->{TRACE_DISABLED} = 0; |
| 74 |
|
|
|
| 75 |
|
|
$self->log('starting to scan'); |
| 76 |
|
|
|
| 77 |
|
|
#for (1..20) { |
| 78 |
|
|
|
| 79 |
|
|
my $patterncount = 0; |
| 80 |
|
|
my $match_in_loop; |
| 81 |
|
|
|
| 82 |
|
|
my $steps; |
| 83 |
|
|
if ($stepkeys) { |
| 84 |
|
|
$steps = $stepkeys; |
| 85 |
|
|
$patterncount++; |
| 86 |
|
|
} else { |
| 87 |
|
|
$steps = $self->{metadata}->{steps}; |
| 88 |
|
|
} |
| 89 |
|
|
|
| 90 |
|
|
#print "cb-2: $coderef", "\n"; |
| 91 |
|
|
|
| 92 |
|
|
foreach my $stepkey_current (@{$steps}) { |
| 93 |
|
|
$self->_scan_step($stepkey_current, $coderef); |
| 94 |
|
|
$patterncount++; |
| 95 |
|
|
} |
| 96 |
|
|
|
| 97 |
|
|
#} |
| 98 |
|
|
|
| 99 |
|
|
# ... propagate them to processing |
| 100 |
|
|
|
| 101 |
|
|
# assign result to property of object's current instance |
| 102 |
|
|
#push @{$self->{result}}, $result; |
| 103 |
|
|
|
| 104 |
|
|
#$self->{code}->($self->{caller}, $self); |
| 105 |
|
|
|
| 106 |
|
|
} |
| 107 |
|
|
|
| 108 |
|
|
sub _scan_step { |
| 109 |
|
|
|
| 110 |
|
|
my $self = shift; |
| 111 |
|
|
my $stepkey = shift; |
| 112 |
|
|
my $callback = shift; |
| 113 |
|
|
|
| 114 |
|
|
#print "cb-3: $callback", "\n"; |
| 115 |
|
|
|
| 116 |
|
|
#$self->log("running step '$stepkey'", 'debug'); |
| 117 |
|
|
$self->log("running step '$stepkey'"); |
| 118 |
|
|
|
| 119 |
|
|
my $dataref = $self->{data}; |
| 120 |
|
|
my $metadata = $self->{metadata}->{$stepkey}; |
| 121 |
|
|
my $pattern = $self->{patterns}->{$stepkey}; |
| 122 |
|
|
my $coderef = $self->{coderefs}->{$stepkey}; |
| 123 |
|
|
|
| 124 |
|
|
#print Dumper($coderef); |
| 125 |
|
|
#print Dumper($self->{data}); |
| 126 |
|
|
#exit; |
| 127 |
|
|
|
| 128 |
|
|
$self->trace("data used", $dataref, 0, undef, { tag => '', exit => 0 }); |
| 129 |
|
|
$self->trace("metadata used", $metadata, 0, undef, { tag => '', exit => 0 }); |
| 130 |
|
|
$self->trace("pattern used", $pattern, 0, undef, { tag => '', exit => 0 }); |
| 131 |
|
|
$self->trace("coderef used", $coderef, 0, undef, { tag => '', exit => 0 }); |
| 132 |
|
|
|
| 133 |
|
|
#print "pattern: $pattern", "\n"; |
| 134 |
|
|
#exit; |
| 135 |
|
|
|
| 136 |
|
|
# if metadata variable "noscan" is supplied, don't kick off the regex-engine, just call the coderef |
| 137 |
|
|
# TODO: log this event |
| 138 |
|
|
if ($metadata->{noscan} && $metadata->{noscan} == 1) { |
| 139 |
|
|
$coderef->($self, undef, undef, $callback); |
| 140 |
|
|
return; |
| 141 |
|
|
} |
| 142 |
|
|
|
| 143 |
|
|
# dereference data if its still referenced |
| 144 |
|
|
my $data = ${$self->{data}}; |
| 145 |
|
|
|
| 146 |
joko |
1.2 |
if (!$data) { |
| 147 |
|
|
$self->log("data is empty: stepkey=$stepkey", 'warning'); |
| 148 |
|
|
return; |
| 149 |
|
|
} |
| 150 |
|
|
|
| 151 |
joko |
1.1 |
#$self->{data} =~ s{ |
| 152 |
|
|
$data =~ s{ |
| 153 |
|
|
|
| 154 |
|
|
$pattern # the pattern itself - as contained in a string - actually gets interpolated here |
| 155 |
|
|
|
| 156 |
|
|
}{ |
| 157 |
|
|
|
| 158 |
|
|
print "." if $self->{verbose}; |
| 159 |
|
|
|
| 160 |
|
|
$self->log("match in step '$stepkey'"); |
| 161 |
|
|
|
| 162 |
|
|
# have a clean item to fill in slots |
| 163 |
|
|
my $result_item = []; |
| 164 |
|
|
|
| 165 |
|
|
# 1. build matched structure from slots - grouping functionality for slots |
| 166 |
|
|
|
| 167 |
|
|
# V1 - hand-rolled |
| 168 |
|
|
#my $result = [$1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19, $20]; |
| 169 |
|
|
#print Dumper($result); |
| 170 |
|
|
|
| 171 |
|
|
my $count = $metadata->{nodecount}; |
| 172 |
|
|
|
| 173 |
|
|
# TODO: re-renable this! |
| 174 |
|
|
#$count ||= $nodecount_default; |
| 175 |
|
|
|
| 176 |
|
|
# V2 - iterate! |
| 177 |
|
|
# push dummy item to slot '0' to mimic known behaviour of accessing $1, $2, $3, .... |
| 178 |
|
|
push @{$result_item}, 'n/a'; |
| 179 |
|
|
for my $i (1..$count) { |
| 180 |
|
|
my $slot = '$' . $i; |
| 181 |
|
|
push @{$result_item}, eval($slot); |
| 182 |
|
|
} |
| 183 |
|
|
|
| 184 |
|
|
|
| 185 |
|
|
# 2. remember built result (raw) in object - grouping functionality for items |
| 186 |
|
|
$self->log("pushing raw result"); |
| 187 |
|
|
push @{$self->{result_raw}}, $result_item; |
| 188 |
|
|
|
| 189 |
|
|
|
| 190 |
|
|
# 4. check/modify further metadata |
| 191 |
|
|
# e.g. 'column_positions' means: "this step is a ColumnProvider" |
| 192 |
|
|
#print Dumper($metadata); |
| 193 |
|
|
if (my $positions = $metadata->{column_positions}) { |
| 194 |
|
|
$self->trace('positions', $positions, 0); |
| 195 |
|
|
|
| 196 |
|
|
#print Dumper($result_item); |
| 197 |
|
|
|
| 198 |
|
|
# build column-names array from position-metadata |
| 199 |
|
|
my @column_names; |
| 200 |
|
|
map { |
| 201 |
|
|
push @column_names, $result_item->[$_]; |
| 202 |
|
|
} @$positions; |
| 203 |
|
|
|
| 204 |
|
|
# store additional metadata |
| 205 |
|
|
$metadata->{column_names} = \@column_names; |
| 206 |
|
|
} |
| 207 |
|
|
|
| 208 |
|
|
$self->trace('column-names', $metadata->{column_names}, 0); |
| 209 |
|
|
|
| 210 |
|
|
|
| 211 |
|
|
#return ''; |
| 212 |
|
|
#$&; |
| 213 |
|
|
push(@{$self->{matches}->{parsed_chunks}}, $&); |
| 214 |
|
|
#undef; |
| 215 |
|
|
|
| 216 |
|
|
my $matchpos = pos($data); |
| 217 |
|
|
$self->{matches}->{position} = $matchpos; |
| 218 |
|
|
push @{$self->{matches}->{positions}}, $matchpos; |
| 219 |
|
|
|
| 220 |
|
|
|
| 221 |
|
|
# 3. call coderef to get _processed_ result if given (callback) |
| 222 |
|
|
$self->log("calling coderef '$coderef'"); |
| 223 |
|
|
if ($coderef) { |
| 224 |
|
|
my $result_processed = {}; |
| 225 |
|
|
if ($coderef->($self, $result_item, $result_processed, $callback)) { |
| 226 |
|
|
$self->trace("pushing processed result", $result_processed, 0); |
| 227 |
|
|
push @{$self->{result}}, $result_processed if $result_processed; |
| 228 |
|
|
} else { |
| 229 |
|
|
$self->log('processing of container failed', 'warning'); |
| 230 |
|
|
return; |
| 231 |
|
|
} |
| 232 |
|
|
} else { |
| 233 |
|
|
# TODO: croak 'no coderef'; |
| 234 |
|
|
} |
| 235 |
|
|
|
| 236 |
|
|
# pass back matched content if we are not the ones to delete something (pass-back-if-not-remover) |
| 237 |
|
|
# with this mechanism, we can iterate over the same content again and again and don't loose data while doing this |
| 238 |
|
|
# without this, multiple scan stepping would not be possible since each step would either remove its |
| 239 |
|
|
# matched content - or not: no flexibility. |
| 240 |
|
|
# as it seems we need flexibility at any point ;-( in order not to break our necks with code-maintenance ;-) |
| 241 |
|
|
# this also can get configured here (this flag is contained in the metadata-part of your filter-declaration) |
| 242 |
|
|
$& if !$metadata->{remover}; |
| 243 |
|
|
|
| 244 |
|
|
}xge; |
| 245 |
|
|
|
| 246 |
|
|
|
| 247 |
|
|
#$self->{data_rest} = \$data; |
| 248 |
|
|
$self->{data} = \$data; |
| 249 |
|
|
|
| 250 |
|
|
#$self->trace('matches', $self->getMatches(), 1); |
| 251 |
|
|
#$self->trace('matches-positions', $self->getMatchPositions(), 1); |
| 252 |
joko |
1.2 |
|
| 253 |
|
|
#print "\r" if $self->{verbose}; |
| 254 |
|
|
print " " x 50 if $self->{verbose}; |
| 255 |
|
|
print "\r" if $self->{verbose}; |
| 256 |
joko |
1.1 |
|
| 257 |
|
|
} |
| 258 |
|
|
|
| 259 |
|
|
sub continue { |
| 260 |
|
|
my $self = shift; |
| 261 |
|
|
my $scankey = shift; |
| 262 |
|
|
#print "CONTINUE!", "\n"; |
| 263 |
|
|
#$self->{data} = $self->{data_rest}; |
| 264 |
|
|
return $self->scan($scankey); |
| 265 |
|
|
} |
| 266 |
|
|
|
| 267 |
|
|
sub getMatches { |
| 268 |
|
|
my $self = shift; |
| 269 |
|
|
return $self->{result_raw}; |
| 270 |
|
|
} |
| 271 |
|
|
|
| 272 |
|
|
sub getResults { |
| 273 |
|
|
my $self = shift; |
| 274 |
|
|
return $self->{result}; |
| 275 |
|
|
} |
| 276 |
|
|
|
| 277 |
|
|
sub getDataRest { |
| 278 |
|
|
my $self = shift; |
| 279 |
|
|
return $self->{data_rest}; |
| 280 |
|
|
} |
| 281 |
|
|
|
| 282 |
|
|
sub getMatchCount { |
| 283 |
|
|
my $self = shift; |
| 284 |
|
|
|
| 285 |
|
|
my $matches = $self->getMatches(); |
| 286 |
|
|
return if isEmpty($matches); |
| 287 |
|
|
|
| 288 |
|
|
my $count = $#{$matches}; |
| 289 |
|
|
$count++; |
| 290 |
|
|
return $count; |
| 291 |
|
|
} |
| 292 |
|
|
|
| 293 |
|
|
sub getMatchPositions { |
| 294 |
|
|
my $self = shift; |
| 295 |
|
|
if (!$self->getMatchCount()) { |
| 296 |
|
|
$self->{matches}->{positions} = []; |
| 297 |
|
|
} |
| 298 |
|
|
return $self->{matches}->{positions}; |
| 299 |
|
|
} |
| 300 |
|
|
|
| 301 |
|
|
sub getMatchPosition { |
| 302 |
|
|
my $self = shift; |
| 303 |
|
|
return $self->{matches}->{position}; |
| 304 |
|
|
} |
| 305 |
|
|
|
| 306 |
|
|
1; |
Parent Directory
| 
Revision Log
