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#--------------------------------------------------------------------------- |
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package Data::Walker; |
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# Copyright (c) 1999,2000 John Nolan. All rights reserved. |
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# This program is free software. You may modify and/or |
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# distribute it under the same terms as Perl itself. |
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# This copyright notice must remain attached to the file. |
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# |
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# You can run this file through either pod2text, pod2man or |
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# pod2html to produce pretty documentation in text, manpage or |
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# html file format (these utilities are part of the |
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# Perl 5 distribution). |
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use Data::Dumper; |
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use overload; # We will use overload::StrVal() |
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use vars qw( $VERSION @ISA $AUTOLOAD @EXPORT %EXPORT_TAGS ); |
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use vars qw( $WALKER %Config @Commands %Commands @ExportedCommands ); |
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require Exporter; |
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@ISA = qw(Exporter); |
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@Commands = qw/ls ll la all lla lal cd pwd |
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print type cat dump show set walk cli/; |
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@ExportedCommands = (@Commands, qw/unwalk/); |
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@EXPORT_OK = @ExportedCommands; |
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%EXPORT_TAGS = ( direct => [ @ExportedCommands ] ); |
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push @Commands, qw/chdir/; # chdir is not exported |
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use strict; |
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$VERSION = '1.05'; |
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sub Version { $VERSION }; |
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#################################################################### |
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# ---{ B E G I N P O D D O C U M E N T A T I O N }-------------- |
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# |
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=head1 NAME |
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B - A tool for navigating through Perl data structures |
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=head1 SYNOPSIS |
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Without any explicit objects: |
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use Data::Walker; |
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Data::Walker->cli( $data_structure ); |
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Object-style invocation: |
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use Data::Walker; |
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my $w = new Data::Walker; |
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$w->walk( $data_structure ); |
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$w->ls("-al"); |
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$w->pwd; |
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$w->cli; |
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Importing methods into the current package: |
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use Data::Walker qw(:direct); |
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walk $data_structure; |
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ls "-al"; |
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pwd; |
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cli; |
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71
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=head1 DESCRIPTION |
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This module allows you to "walk" an arbitrary Perl data |
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structure in the same way that you can walk a directory tree |
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from a UNIX command line. It reuses familiar unix commands |
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(such as "ls", "cd", "pwd") and applies these to data structures. |
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It has a command-line interface which behaves like a UNIX shell. |
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You can also use object-style sytax to invoke the CLI commands from |
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outside the CLI. Data::Walker objects are encapsulated, |
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so that you can hop into and out of a CLI without losing state, |
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and you can have several Data::Walker objects pointing at |
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different structures. |
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The main functions can also be imported and used directly |
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from within the Perl debugger's CLI. |
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=head1 INSTALLATION |
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To install this package, just into the directory which |
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you created by untarring the package, and type the following: |
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perl Makefile.PL |
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make test |
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make |
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make install |
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This will copy Walker.pm to your perl library directory for |
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use by all perl scripts. You probably must be root to do this, |
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unless you have installed a personal copy of perl or you have |
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write access to a Perl lib directory. |
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104
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=head1 USAGE |
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106
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You open a command-line interface by invoking the cli() function. |
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108
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use Data::Walker; |
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Data::Walker->cli( $data_structure ); |
110
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111
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You can customize certain features, like so: |
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113
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use Data::Walker; |
114
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$Data::Walker::Config{'skipdoublerefs'} = 0; |
115
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Data::Walker->cli( $data_structure ); |
116
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117
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If you prefer to use object-style notation, then you |
118
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can use this syntax to customize the settings. |
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You can invoke the walk() method directly, our you |
120
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can let the cli() method call walk() implicitly: |
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122
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use Data::Walker; |
123
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my $w1 = new Data::Walker; |
124
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$w1->walk( $data_structure ); |
125
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$w1->cli; |
126
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127
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my $w2 = new Data::Walker; |
128
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$w2->cli( $data_structure ); |
129
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130
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my $w3 = new Data::Walker( 'skipdoublerefs' => 0 ); |
131
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$w3->walk( $data_structure ); |
132
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$w3->cli(); |
133
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134
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$w3->showrecursion(0); |
135
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$w3->cli(); |
136
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137
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You can also import most of the functions directly into |
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the current package. This is especially useful from within |
139
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the debugger (see the example below). |
140
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141
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use Data::Walker qw(:direct); |
142
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walk $data_structure; |
143
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ls "-al"; |
144
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pwd; |
145
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cli; |
146
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147
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When you use the :direct pragma and invoke the walk() function, |
148
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a Data::Walker object is implicitly created, and is available |
149
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as $Data::Walker::WALKER. |
150
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151
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Imagine a data structure like so: |
152
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153
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my $s = { |
154
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155
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a => [ 10, 20, "thirty" ], |
156
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b => { |
157
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"w" => "forty", |
158
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"x" => "fifty", |
159
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"y" => 60, |
160
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"z" => \70, |
161
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}, |
162
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c => sub { print "I'm a data structure!\n"; }, |
163
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d => 80, |
164
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}; |
165
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$s->{e} = \$s->{d}; |
166
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167
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168
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Here is a sample CLI session examining this structure ('/>' is the prompt): |
169
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170
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171
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/> |
172
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/> ls -l |
173
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a ARRAY (3) |
174
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b HASH (4) |
175
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c CODE |
176
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d scalar 80 |
177
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e SCALAR 80 |
178
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/> cd a |
179
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/->{a}> ls -al |
180
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.. HASH (5) |
181
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. ARRAY (3) |
182
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0 scalar 10 |
183
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1 scalar 20 |
184
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2 scalar 'thirty' |
185
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/->{a}> cd ../b |
186
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/->{b}> ls -al |
187
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.. HASH (5) |
188
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. HASH (4) |
189
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w scalar 'forty' |
190
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x scalar 'fifty' |
191
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y scalar 60 |
192
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z SCALAR 70 |
193
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/->{b}> cd .. |
194
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/> dump b |
195
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dump--> 'b' |
196
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$b = { |
197
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'x' => 'fifty', |
198
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'y' => 60, |
199
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'z' => \70, |
200
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'w' => 'forty' |
201
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}; |
202
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/> ls -al |
203
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.. HASH (5) |
204
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. HASH (5) |
205
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a ARRAY (3) |
206
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b HASH (4) |
207
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c CODE |
208
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d scalar 80 |
209
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e SCALAR 80 |
210
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/> ! $cur->{d} += 3 |
211
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eval--> $cur->{d} += 3 |
212
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retv--> 83 |
213
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/> ls -al |
214
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.. HASH (5) |
215
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. HASH (5) |
216
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a ARRAY (3) |
217
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b HASH (4) |
218
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c CODE |
219
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d scalar 83 |
220
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e SCALAR 83 |
221
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/> |
222
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223
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224
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Below is a sample debugger session examining this structure. |
225
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226
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Note that the walk() function returns a reference to the "cursor", |
227
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|
which is itself a reference to whatever is the "current directory," |
228
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|
so to speak. The actual Data::Walker object iself is managed |
229
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|
implicitly, and is available as $Data::Walker::WALKER. |
230
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When you are finished, you can undef this object directly, |
231
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or use the unwalk() function, which does this for you. |
232
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But if you saved a copy of the cursor, then you will need to |
233
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undef this on your own. |
234
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(violet) ~/perl/walker/Data-Walker-0.18 > perl -d sample_db |
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Loading DB routines from perl5db.pl version 1.0401 |
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Emacs support available. |
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Enter h or `h h' for help. |
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main::(sample:19): d => 80, |
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DB<1> n |
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main::(sample:22): $s->{e} = \$s->{d}; |
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DB<1> n |
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main::(sample:30): 1; |
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DB<1> use Data::Walker qw(:direct) |
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DB<2> $cur = walk $s |
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DB<3> pwd |
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/ |
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DB<4> ls |
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a b c d e |
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DB<5> lal |
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.. HASH (5) |
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. HASH (5) |
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a ARRAY (3) |
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b HASH (4) |
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c CODE |
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d scalar 80 |
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e SCALAR 80 |
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DB<6> cd a |
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/->{a} |
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DB<7> ll |
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0 scalar 10 |
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1 scalar 20 |
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2 scalar 'thirty' |
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DB<8> cd '../b' |
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/->{b} |
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DB<9> lal |
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.. HASH (5) |
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. HASH (4) |
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w scalar 'forty' |
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x scalar 'fifty' |
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y scalar 60 |
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z SCALAR 70 |
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DB<10> cd '..' |
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/ |
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DB<11> dump b |
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dump--> 'b' |
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$b = { |
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'x' => 'fifty', |
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'y' => 60, |
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'z' => \70, |
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'w' => 'forty' |
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}; |
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DB<12> ll |
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a ARRAY (3) |
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b HASH (4) |
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c CODE |
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d scalar 80 |
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e SCALAR 80 |
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DB<13> $$cur->{d} += 3 |
296
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297
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DB<14> ll |
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a ARRAY (3) |
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b HASH (4) |
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c CODE |
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d scalar 83 |
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e SCALAR 83 |
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DB<15> |
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DB<16> pwd |
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/ |
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DB<17> cli |
307
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/> cd b |
308
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/->{b}> ls -l |
309
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w scalar 'forty' |
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x scalar 'fifty' |
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y scalar 60 |
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z SCALAR 70 |
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/->{b}> print y |
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60 |
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/->{b}> print x |
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fifty |
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/->{b}> exit |
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319
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DB<18> pwd |
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/->{b} |
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DB<19> ll |
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w scalar 'forty' |
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x scalar 'fifty' |
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y scalar 60 |
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z SCALAR 70 |
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DB<20> unwalk |
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328
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DB<21> undef $cur |
329
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330
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DB<22> |
331
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332
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333
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The following commands are available from within the CLI. |
334
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With these commands, you can navigate around the data |
335
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structure as if it were a directory tree. |
336
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337
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cd like UNIX cd |
338
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ls like UNIX ls (also respects options -a, -l) |
339
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print prints the item as a scalar |
340
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dump invokes Data::Dumper |
341
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set set configuration variables |
342
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show show configuration variables |
343
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! or eval eval arbitrary perl (careful!) |
344
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help this help message |
345
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help set lists the available config variables |
346
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347
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348
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For each session (or object) the following items can be configured: |
349
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350
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rootname (default: '/' ) displays the root node |
351
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refname (default: 'ref' ) displays embedded refs |
352
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scalarname (default: 'scalar') displays simple scalars |
353
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undefname (default: 'undef' ) displays undefined scalars |
354
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355
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maxdepth (default: 1 ) maximum dump-depth (Data::Dumper) |
356
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indent (default: 1 ) amount of indent (Data::Dumper) |
357
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lscol1width (default: 15 ) column widths for 'ls' displays |
358
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lscol2width (default: 25 ) column widths for 'ls' displays |
359
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360
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showrecursion (default: 1 ) note recursion in the prompt |
361
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showids (default: 0 ) show ref id numbers in ls lists |
362
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skipdoublerefs (default: 1 ) hop over ref-to-refs during walks |
363
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skipwarning (default: 1 ) warn when hopping over ref-to-refs |
364
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truncatescalars (default: 37 ) truncate scalars in 'ls' displays |
365
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autoprint (default: 1 ) print directory after chdir when not in CLI |
366
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367
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promptchar (default: '>') customize the session prompt |
368
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arrowshaft (default: '-') ('-' in '->') |
369
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arrowhead (default: '>') ('>' in '->') |
370
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371
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curname (default: 'cur' ) how to refer to the cursor for evals |
372
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|
parname (default: 'par' ) how to refer to the parent ref for evals |
373
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374
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375
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|
=head1 CHANGES |
376
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377
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=over 4 |
378
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379
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=item * Version 1.05 |
380
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381
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Patch to the test scripts for compatibility with |
382
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perl 5.8.0, which stringifies references-to-references |
383
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|
|
differently. In previous versions of perl, |
384
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|
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references-to-references were stringified |
385
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|
|
as 'SCALAR(0x???)', but perl 5.8.0 stringifies |
386
|
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|
|
them as 'REF(0x???)'. |
387
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388
|
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|
All versions of perl's 'ref' function return |
389
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|
|
'REF' for references-to-references. |
390
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391
|
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|
|
=item * Version 1.02-1.04 |
392
|
|
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393
|
|
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|
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|
|
Minor changes to installer tests. |
394
|
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|
|
395
|
|
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|
|
=item * Version 1.01 |
396
|
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|
|
397
|
|
|
|
|
|
|
Minor changes to the documentation. |
398
|
|
|
|
|
|
|
Added walker_http.pl, which is a library for using |
399
|
|
|
|
|
|
|
Data::Walker together with HTTP::Daemon to view objects |
400
|
|
|
|
|
|
|
with a Web browser. Two example scripts are also included. |
401
|
|
|
|
|
|
|
|
402
|
|
|
|
|
|
|
=item * Version 0.21 |
403
|
|
|
|
|
|
|
|
404
|
|
|
|
|
|
|
Minor changes to the documentation |
405
|
|
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|
|
406
|
|
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|
|
|
|
=item * Version 0.19-0.20 |
407
|
|
|
|
|
|
|
|
408
|
|
|
|
|
|
|
Added new tests and updated the documentation. |
409
|
|
|
|
|
|
|
|
410
|
|
|
|
|
|
|
=item * Version 0.18 |
411
|
|
|
|
|
|
|
|
412
|
|
|
|
|
|
|
Completely separated the CLI loop, command-parsing regexes, |
413
|
|
|
|
|
|
|
and the functions which implement the commands. AUTOLOAD is now |
414
|
|
|
|
|
|
|
set up to handle any commands that the CLI can parse (except |
415
|
|
|
|
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|
|
for eval() ). |
416
|
|
|
|
|
|
|
|
417
|
|
|
|
|
|
|
By using the :direct pragma, you can now import AUTOLOADed functions |
418
|
|
|
|
|
|
|
into the current package, so that you can easily invoke them |
419
|
|
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|
|
|
|
from the perl debugger. |
420
|
|
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|
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421
|
|
|
|
|
|
|
=item * Version 0.16-0.17 |
422
|
|
|
|
|
|
|
|
423
|
|
|
|
|
|
|
The Data::Walker objects are now fully encapsulated. |
424
|
|
|
|
|
|
|
|
425
|
|
|
|
|
|
|
NOTE: The walk() function has been separated into two functions, |
426
|
|
|
|
|
|
|
namely walk() and cli(). The usage instructions have changed. |
427
|
|
|
|
|
|
|
Please have a look. |
428
|
|
|
|
|
|
|
|
429
|
|
|
|
|
|
|
=item * Version 0.15 |
430
|
|
|
|
|
|
|
|
431
|
|
|
|
|
|
|
Reorganized the installation tests. |
432
|
|
|
|
|
|
|
A few minor changes to the module itself. |
433
|
|
|
|
|
|
|
|
434
|
|
|
|
|
|
|
=item * Version 0.13-0.14 |
435
|
|
|
|
|
|
|
|
436
|
|
|
|
|
|
|
Moved some functionality from the CLI-loop |
437
|
|
|
|
|
|
|
into distinct functions. |
438
|
|
|
|
|
|
|
|
439
|
|
|
|
|
|
|
=item * Version 0.12 |
440
|
|
|
|
|
|
|
|
441
|
|
|
|
|
|
|
Blessed references to non-hashes are now handled correctly. |
442
|
|
|
|
|
|
|
Modified the output of "ls" commands (looks different). |
443
|
|
|
|
|
|
|
Added new options: |
444
|
|
|
|
|
|
|
showids, lscol2width, scalarname, undefname, |
445
|
|
|
|
|
|
|
skipwarning |
446
|
|
|
|
|
|
|
Numerous internal changes. |
447
|
|
|
|
|
|
|
|
448
|
|
|
|
|
|
|
=item * Version 0.11 |
449
|
|
|
|
|
|
|
|
450
|
|
|
|
|
|
|
Fixed some misspellings in the help information. |
451
|
|
|
|
|
|
|
Modified the pretty-print format of scalars. |
452
|
|
|
|
|
|
|
Added some new comments to the source code. |
453
|
|
|
|
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|
|
Various other small updates. |
454
|
|
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|
|
455
|
|
|
|
|
|
|
=back |
456
|
|
|
|
|
|
|
|
457
|
|
|
|
|
|
|
=head1 THANKS |
458
|
|
|
|
|
|
|
|
459
|
|
|
|
|
|
|
Thanks to Gurusamy Sarathy for writing Data::Dumper, |
460
|
|
|
|
|
|
|
and to Dominique Dumont for writing Tk::ObjScanner. |
461
|
|
|
|
|
|
|
|
462
|
|
|
|
|
|
|
Thanks to Matthew Persico for sending some ideas on |
463
|
|
|
|
|
|
|
how this module might be useful in the debugger. |
464
|
|
|
|
|
|
|
|
465
|
|
|
|
|
|
|
Thanks to Scott Lindsey for pointing out that this module |
466
|
|
|
|
|
|
|
is useful for reading files created with the Storable module, |
467
|
|
|
|
|
|
|
and for sending a sample script to do this. |
468
|
|
|
|
|
|
|
|
469
|
|
|
|
|
|
|
=head1 AUTHOR |
470
|
|
|
|
|
|
|
|
471
|
|
|
|
|
|
|
John Nolan jpnolan@sonic.net 1999,2000. |
472
|
|
|
|
|
|
|
A copyright statment is contained within the source code itself. |
473
|
|
|
|
|
|
|
|
474
|
|
|
|
|
|
|
=cut |
475
|
|
|
|
|
|
|
|
476
|
|
|
|
|
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|
|
477
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
478
|
|
|
|
|
|
|
# Default values - these can be overridden, either when an object |
479
|
|
|
|
|
|
|
# is instantiated or during an interactive session. |
480
|
|
|
|
|
|
|
# |
481
|
|
|
|
|
|
|
%Config = ( |
482
|
|
|
|
|
|
|
|
483
|
|
|
|
|
|
|
rootname => '/' , # Any string |
484
|
|
|
|
|
|
|
refname => 'ref', # Any string |
485
|
|
|
|
|
|
|
curname => 'cur', # Any string |
486
|
|
|
|
|
|
|
parname => 'par', # Any string |
487
|
|
|
|
|
|
|
scalarname => 'scalar', # Any string |
488
|
|
|
|
|
|
|
undefname => 'undef', # Any string |
489
|
|
|
|
|
|
|
|
490
|
|
|
|
|
|
|
maxdepth => 1 , # Any integer, gets passed right to Data::Dumper |
491
|
|
|
|
|
|
|
indent => 1 , # 1,2 or 3, gets passed right to Data::Dumper |
492
|
|
|
|
|
|
|
lscol1width => 13 , # Any integer |
493
|
|
|
|
|
|
|
lscol2width => 25 , # Any integer |
494
|
|
|
|
|
|
|
|
495
|
|
|
|
|
|
|
showrecursion => 1 , # Boolean |
496
|
|
|
|
|
|
|
showids => 0 , # Boolean |
497
|
|
|
|
|
|
|
skipdoublerefs => 1 , # Boolean |
498
|
|
|
|
|
|
|
skipwarning => 1 , # Boolean |
499
|
|
|
|
|
|
|
warning => 1 , # Boolean |
500
|
|
|
|
|
|
|
autoprint => '' , # Boolean |
501
|
|
|
|
|
|
|
|
502
|
|
|
|
|
|
|
truncatescalars => 35 , # Truncate to how many chars; use 0 for no truncation |
503
|
|
|
|
|
|
|
|
504
|
|
|
|
|
|
|
promptchar => '>' , # Any string |
505
|
|
|
|
|
|
|
arrowshaft => '-' , # Any string |
506
|
|
|
|
|
|
|
arrowhead => '>' , # Any string |
507
|
|
|
|
|
|
|
); |
508
|
|
|
|
|
|
|
|
509
|
|
|
|
|
|
|
$Config{arrow} = $Config{arrowshaft} . $Config{arrowhead}; |
510
|
|
|
|
|
|
|
|
511
|
|
|
|
|
|
|
# Make a list of all UNIX-like commands that we are going to export |
512
|
|
|
|
|
|
|
# |
513
|
|
|
|
|
|
|
#@Commands = qw( ls ll la all lla lal cd chdir pwd print type cat dump show set ); |
514
|
|
|
|
|
|
|
@Commands{@Commands} = @Commands; |
515
|
|
|
|
|
|
|
|
516
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
517
|
|
|
|
|
|
|
# Set up a new Data::Walker object |
518
|
|
|
|
|
|
|
# |
519
|
|
|
|
|
|
|
sub new { |
520
|
|
|
|
|
|
|
|
521
|
2
|
|
|
2
|
0
|
423
|
my $class = shift; |
522
|
2
|
|
|
|
|
8
|
my %ARGS = @_; |
523
|
|
|
|
|
|
|
|
524
|
2
|
|
|
|
|
52
|
my $self = { (%Config) }; |
525
|
|
|
|
|
|
|
|
526
|
2
|
|
|
|
|
10
|
bless $self,$class; |
527
|
|
|
|
|
|
|
|
528
|
2
|
|
|
|
|
11
|
foreach (keys %ARGS) { |
529
|
|
|
|
|
|
|
|
530
|
0
|
0
|
|
|
|
0
|
if (exists $Config{$_}) { |
531
|
|
|
|
|
|
|
|
532
|
0
|
|
|
|
|
0
|
$self->{$_} = $ARGS{$_}; |
533
|
|
|
|
|
|
|
|
534
|
|
|
|
|
|
|
} else { |
535
|
|
|
|
|
|
|
|
536
|
0
|
|
|
|
|
0
|
print "$_ is not a configuration variable for $class."; |
537
|
|
|
|
|
|
|
} |
538
|
|
|
|
|
|
|
} |
539
|
2
|
|
|
|
|
12
|
return $self; |
540
|
|
|
|
|
|
|
|
541
|
|
|
|
|
|
|
} #End sub new |
542
|
|
|
|
|
|
|
|
543
|
|
|
|
|
|
|
|
544
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
545
|
|
|
|
|
|
|
# Undef the implicit Data::Walker object |
546
|
|
|
|
|
|
|
# |
547
|
|
|
|
|
|
|
sub unwalk { |
548
|
|
|
|
|
|
|
|
549
|
0
|
|
|
0
|
0
|
0
|
undef($WALKER); |
550
|
|
|
|
|
|
|
} |
551
|
|
|
|
|
|
|
|
552
|
|
|
|
|
|
|
|
553
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
554
|
|
|
|
|
|
|
# Point a Data::Walker object at a given reference |
555
|
|
|
|
|
|
|
# |
556
|
|
|
|
|
|
|
sub walk { |
557
|
|
|
|
|
|
|
|
558
|
|
|
|
|
|
|
# This code handles both OO invocation as a method and |
559
|
|
|
|
|
|
|
# non-OO invocation |
560
|
|
|
|
|
|
|
# |
561
|
1
|
|
|
1
|
0
|
47
|
my $class = __PACKAGE__; |
562
|
1
|
|
|
|
|
2
|
my ($self,$ref); |
563
|
|
|
|
|
|
|
|
564
|
1
|
50
|
33
|
|
|
11
|
if (defined $_[0] and ref($_[0]) eq $class) { |
565
|
|
|
|
|
|
|
|
566
|
1
|
|
|
|
|
3
|
$self = shift; |
567
|
|
|
|
|
|
|
|
568
|
|
|
|
|
|
|
} else { |
569
|
|
|
|
|
|
|
|
570
|
0
|
|
|
|
|
0
|
$self = $WALKER = new Data::Walker; |
571
|
|
|
|
|
|
|
} |
572
|
|
|
|
|
|
|
|
573
|
1
|
|
|
|
|
2
|
$ref = shift; |
574
|
|
|
|
|
|
|
|
575
|
1
|
50
|
33
|
|
|
22
|
unless (defined $ref and ref $ref) { |
576
|
|
|
|
|
|
|
|
577
|
0
|
|
|
|
|
0
|
print "Parameter to walk is missing, undefined, or is not a reference"; |
578
|
0
|
|
|
|
|
0
|
return 0; |
579
|
|
|
|
|
|
|
} |
580
|
|
|
|
|
|
|
|
581
|
1
|
|
|
|
|
66
|
$self->{namepath} = [$self->{rootname}]; |
582
|
1
|
|
|
|
|
4
|
$self->{refpath} = [$ref]; |
583
|
1
|
|
|
|
|
2
|
$self->{cursor} = $ref; |
584
|
|
|
|
|
|
|
|
585
|
1
|
|
|
|
|
2
|
$self->{prev_namepath} = []; |
586
|
1
|
|
|
|
|
3
|
$self->{prev_refpath} = []; |
587
|
1
|
|
|
|
|
2
|
$self->{tmp_namepath} = []; |
588
|
1
|
|
|
|
|
3
|
$self->{tmp_refpath} = []; |
589
|
|
|
|
|
|
|
|
590
|
1
|
|
|
|
|
4
|
return \$self->{cursor}; # Return a ref to the cursor |
591
|
|
|
|
|
|
|
} |
592
|
|
|
|
|
|
|
|
593
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
594
|
|
|
|
|
|
|
# Find out what a reference actually points to |
595
|
|
|
|
|
|
|
# |
596
|
|
|
|
|
|
|
sub reftype { |
597
|
|
|
|
|
|
|
|
598
|
267
|
|
|
267
|
0
|
322
|
my ($ref) = @_; |
599
|
|
|
|
|
|
|
|
600
|
267
|
50
|
|
|
|
587
|
return unless ref($ref); |
601
|
|
|
|
|
|
|
|
602
|
267
|
|
|
|
|
632
|
my($realpack, $realtype, $id) = |
603
|
|
|
|
|
|
|
(overload::StrVal($ref) =~ /^(?:(.*)\=)?([^=]*)\(([^\(]*)\)$/); |
604
|
|
|
|
|
|
|
|
605
|
|
|
|
|
|
|
# For some reason, stringified version of a ref-to-ref gives a |
606
|
|
|
|
|
|
|
# type of "SCALAR" rather than "REF". Go figure. |
607
|
|
|
|
|
|
|
# |
608
|
267
|
50
|
66
|
|
|
2620
|
$realtype = 'REF' if $realtype eq 'SCALAR' and ref($$ref); |
609
|
|
|
|
|
|
|
|
610
|
267
|
100
|
|
|
|
967
|
wantarray ? return ($realtype,$realpack,$id) : return $realtype; |
611
|
|
|
|
|
|
|
|
612
|
|
|
|
|
|
|
} #End sub reftype |
613
|
|
|
|
|
|
|
|
614
|
|
|
|
|
|
|
|
615
|
|
|
|
|
|
|
|
616
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
617
|
|
|
|
|
|
|
# Print out a short string describing the type of thing |
618
|
|
|
|
|
|
|
# this reference is pointing to. Follow ref-to-refs if necessary. |
619
|
|
|
|
|
|
|
# |
620
|
|
|
|
|
|
|
sub printref { |
621
|
|
|
|
|
|
|
|
622
|
154
|
|
|
154
|
0
|
3420
|
my ($self,$ref,$recurse) = @_; |
623
|
|
|
|
|
|
|
|
624
|
154
|
100
|
|
|
|
370
|
$recurse = {} unless defined $recurse; |
625
|
|
|
|
|
|
|
|
626
|
154
|
|
|
|
|
237
|
my ($type, $value) = ("error: type is empty","error: value is empty"); |
627
|
|
|
|
|
|
|
|
628
|
154
|
50
|
|
|
|
361
|
if (not defined $ref) { |
|
|
100
|
|
|
|
|
|
629
|
|
|
|
|
|
|
|
630
|
0
|
|
|
|
|
0
|
$type = $self->{scalarname}; |
631
|
0
|
|
|
|
|
0
|
$value = $self->{undefname}; |
632
|
|
|
|
|
|
|
|
633
|
|
|
|
|
|
|
} elsif (ref $ref) { |
634
|
|
|
|
|
|
|
|
635
|
101
|
|
|
|
|
160
|
my ($reftype,$refpackage,$id) = reftype($ref); |
636
|
|
|
|
|
|
|
|
637
|
101
|
|
|
|
|
165
|
$type = $reftype; |
638
|
101
|
100
|
66
|
|
|
277
|
$type = $refpackage . "=" . $type if defined($refpackage) and $refpackage ne ""; |
639
|
101
|
100
|
|
|
|
238
|
$type .= "($id)" if $self->{showids}; |
640
|
|
|
|
|
|
|
|
641
|
101
|
100
|
|
|
|
161
|
if ($reftype eq "REF") { |
642
|
|
|
|
|
|
|
|
643
|
|
|
|
|
|
|
# If this is a ref-to-ref, then recurse until we find |
644
|
|
|
|
|
|
|
# what it ultimately points to. |
645
|
|
|
|
|
|
|
# But stop if we detect a reference loop. |
646
|
|
|
|
|
|
|
# |
647
|
15
|
50
|
|
|
|
35
|
if (exists $recurse->{$ref}) { |
648
|
|
|
|
|
|
|
|
649
|
0
|
|
|
|
|
0
|
my $hops = (scalar keys %$recurse) - $recurse->{$ref}; |
650
|
0
|
0
|
|
|
|
0
|
$value = "(recurses in $hops " . ($hops > 1 ? "hops" : "hop") . ")"; |
651
|
|
|
|
|
|
|
|
652
|
|
|
|
|
|
|
} else { |
653
|
|
|
|
|
|
|
|
654
|
15
|
|
|
|
|
62
|
$recurse->{$ref} = scalar keys(%$recurse); |
655
|
15
|
|
|
|
|
44
|
my ($nexttype, $nextvalue, $nextid) = $self->printref($$ref,$recurse); |
656
|
15
|
|
|
|
|
31
|
$type .= $self->{arrow} . $nexttype; |
657
|
15
|
|
|
|
|
30
|
$value = $nextvalue; |
658
|
|
|
|
|
|
|
} |
659
|
|
|
|
|
|
|
|
660
|
|
|
|
|
|
|
} else { |
661
|
|
|
|
|
|
|
|
662
|
86
|
|
|
|
|
122
|
$recurse = {}; |
663
|
|
|
|
|
|
|
|
664
|
86
|
100
|
66
|
|
|
318
|
if ($reftype eq "HASH") { |
|
|
100
|
66
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
665
|
|
|
|
|
|
|
|
666
|
30
|
|
|
|
|
86
|
$value = "(" . scalar keys(%$ref) . ")"; |
667
|
|
|
|
|
|
|
|
668
|
|
|
|
|
|
|
} elsif ($reftype eq "ARRAY") { |
669
|
|
|
|
|
|
|
|
670
|
31
|
|
|
|
|
69
|
$value = "(" . scalar @$ref . ")"; |
671
|
|
|
|
|
|
|
|
672
|
|
|
|
|
|
|
} elsif ($reftype eq "SCALAR" and not defined($$ref) ) { |
673
|
|
|
|
|
|
|
|
674
|
0
|
|
|
|
|
0
|
$value = $self->{undefname}; |
675
|
|
|
|
|
|
|
|
676
|
|
|
|
|
|
|
} elsif ($reftype eq "SCALAR" and defined $$ref ) { |
677
|
|
|
|
|
|
|
|
678
|
12
|
|
|
|
|
23
|
$value = $$ref; |
679
|
|
|
|
|
|
|
|
680
|
|
|
|
|
|
|
} else { |
681
|
|
|
|
|
|
|
|
682
|
13
|
|
|
|
|
25
|
$value = ""; # We decline to displey other data types. :) |
683
|
|
|
|
|
|
|
|
684
|
|
|
|
|
|
|
} #End if ($reftype eq ...) |
685
|
|
|
|
|
|
|
|
686
|
|
|
|
|
|
|
} #End if ($reftype eq "REF") |
687
|
|
|
|
|
|
|
|
688
|
|
|
|
|
|
|
|
689
|
|
|
|
|
|
|
} else { |
690
|
|
|
|
|
|
|
|
691
|
|
|
|
|
|
|
# It's not a reference, so it must actually be a scalar. |
692
|
|
|
|
|
|
|
# |
693
|
53
|
|
|
|
|
80
|
$type = $self->{scalarname}; |
694
|
53
|
|
|
|
|
56
|
$value = $ref; |
695
|
|
|
|
|
|
|
|
696
|
53
|
50
|
33
|
|
|
272
|
if ($self->{truncatescalars} > 0 and length($ref) > $self->{truncatescalars} - 2) { |
697
|
|
|
|
|
|
|
|
698
|
0
|
|
|
|
|
0
|
$value = substr($ref,0,$self->{truncatescalars} - 5) . "..." ; |
699
|
|
|
|
|
|
|
} |
700
|
|
|
|
|
|
|
|
701
|
|
|
|
|
|
|
# Quote anything that's not a decimal value. |
702
|
|
|
|
|
|
|
# |
703
|
53
|
100
|
|
|
|
208
|
unless ($value =~ /^(?:0|-?[1-9]\d{0,8})$/) { |
704
|
|
|
|
|
|
|
|
705
|
14
|
|
|
|
|
25
|
$value = '\'' . $value . '\''; |
706
|
|
|
|
|
|
|
} |
707
|
|
|
|
|
|
|
|
708
|
|
|
|
|
|
|
} #End if (not defined $ref) -- elsif (ref $ref) |
709
|
|
|
|
|
|
|
|
710
|
|
|
|
|
|
|
|
711
|
154
|
100
|
|
|
|
615
|
wantarray ? return ($type,$value) : return $type; |
712
|
|
|
|
|
|
|
|
713
|
|
|
|
|
|
|
} #End sub printref |
714
|
|
|
|
|
|
|
|
715
|
|
|
|
|
|
|
|
716
|
|
|
|
|
|
|
|
717
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
718
|
|
|
|
|
|
|
# This function is used for "chdir'ing" down a reference. |
719
|
|
|
|
|
|
|
# |
720
|
|
|
|
|
|
|
sub down { |
721
|
|
|
|
|
|
|
|
722
|
33
|
|
|
33
|
0
|
972
|
my ($self,$name,$ref,$recurse) = @_; |
723
|
|
|
|
|
|
|
|
724
|
|
|
|
|
|
|
# The hash $recurse contains elements only when |
725
|
|
|
|
|
|
|
# this function is called recursively. This typically |
726
|
|
|
|
|
|
|
# happens when we are chdir'ing down ref-to-refs. |
727
|
|
|
|
|
|
|
# |
728
|
33
|
100
|
|
|
|
92
|
$recurse = {} unless defined $recurse; |
729
|
|
|
|
|
|
|
|
730
|
33
|
100
|
|
|
|
94
|
my $what_is_it = ref($ref) ? reftype($ref) . " reference" : "scalar"; |
731
|
|
|
|
|
|
|
|
732
|
33
|
100
|
|
|
|
170
|
unless ($what_is_it =~ /(ARRAY|HASH|REF)/) { |
733
|
|
|
|
|
|
|
|
734
|
5
|
50
|
|
|
|
16
|
print "'$name' is a $what_is_it, can't cd into it.\n" |
735
|
|
|
|
|
|
|
if $self->{warning}; |
736
|
5
|
|
|
|
|
9
|
$self->{cursor} = undef; # The caller must handle this |
737
|
5
|
|
|
|
|
23
|
return; |
738
|
|
|
|
|
|
|
} |
739
|
|
|
|
|
|
|
|
740
|
28
|
100
|
|
|
|
71
|
$name = "{$name}" if reftype($self->{refpath}[-1]) eq "HASH"; |
741
|
28
|
50
|
|
|
|
74
|
$name = "[$name]" if reftype($self->{refpath}[-1]) eq "ARRAY"; |
742
|
|
|
|
|
|
|
|
743
|
28
|
|
|
|
|
36
|
push @{$self->{namepath}}, $name; |
|
28
|
|
|
|
|
72
|
|
744
|
28
|
|
|
|
|
44
|
push @{$self->{refpath}}, $ref; |
|
28
|
|
|
|
|
53
|
|
745
|
|
|
|
|
|
|
|
746
|
28
|
|
|
|
|
45
|
$self->{cursor} = $ref; |
747
|
|
|
|
|
|
|
|
748
|
|
|
|
|
|
|
#------------------------------ |
749
|
|
|
|
|
|
|
# If the 'skipdoublerefs' config value is set, |
750
|
|
|
|
|
|
|
# and if the reference itself refers to a reference, |
751
|
|
|
|
|
|
|
# then skip it and go down further. This is recursive, |
752
|
|
|
|
|
|
|
# so we will keep skipping until we come to |
753
|
|
|
|
|
|
|
# something which is not a ref-to-ref. |
754
|
|
|
|
|
|
|
# |
755
|
|
|
|
|
|
|
# We need to watch out for reference loops. |
756
|
|
|
|
|
|
|
# Keep track of already-seen references in %$recurse. |
757
|
|
|
|
|
|
|
# Pass $recurse to this function, recursively. |
758
|
|
|
|
|
|
|
# |
759
|
28
|
100
|
100
|
|
|
144
|
if ($self->{skipdoublerefs} and ref($self->{cursor}) eq "REF") { |
760
|
|
|
|
|
|
|
|
761
|
|
|
|
|
|
|
# Remember that we have seen the current reference. |
762
|
4
|
|
|
|
|
18
|
$recurse->{$self->{cursor}} = scalar keys(%$recurse); |
763
|
|
|
|
|
|
|
|
764
|
4
|
50
|
33
|
|
|
27
|
print "Skipping down ref-to-ref.\n" if $self->{skipwarning} and $self->{warning}; |
765
|
|
|
|
|
|
|
|
766
|
4
|
100
|
|
|
|
7
|
if (exists $recurse->{ ${$self->{cursor}} }) { |
|
4
|
|
|
|
|
15
|
|
767
|
|
|
|
|
|
|
|
768
|
|
|
|
|
|
|
#------------------------------ |
769
|
|
|
|
|
|
|
# If $recurse->{ ${$self->{cursor}} } exists, then we must have seen it before. |
770
|
|
|
|
|
|
|
# This means we have detected a reference loop. |
771
|
|
|
|
|
|
|
# |
772
|
|
|
|
|
|
|
# The value of $recurse->{$self->{cursor}} is the number of reference-hops |
773
|
|
|
|
|
|
|
# to the current reference, and the value of $recurse->{ ${$self->{cursor}} } |
774
|
|
|
|
|
|
|
# the number of hops to ${$self->{cursor}}, which is a smaller number, |
775
|
|
|
|
|
|
|
# because we saw it before, on a previous hop. |
776
|
|
|
|
|
|
|
# |
777
|
|
|
|
|
|
|
# To get the size of the reference loop, get the number of hops between them, |
778
|
|
|
|
|
|
|
# and add one hop (to count the final hop back to the beginning of the loop). |
779
|
|
|
|
|
|
|
# |
780
|
2
|
|
|
|
|
6
|
my $hops = 1 + $recurse->{$self->{cursor}} - $recurse->{ ${$self->{cursor}} }; |
|
2
|
|
|
|
|
6
|
|
781
|
2
|
0
|
|
|
|
8
|
print |
|
|
50
|
|
|
|
|
|
782
|
|
|
|
|
|
|
"Reference loop detected: $hops ". ($hops > 1 ? "hops" : "hop") . ".\n" |
783
|
|
|
|
|
|
|
if $self->{warning} |
784
|
|
|
|
|
|
|
; |
785
|
|
|
|
|
|
|
|
786
|
|
|
|
|
|
|
} else { |
787
|
|
|
|
|
|
|
|
788
|
2
|
|
|
|
|
5
|
$self->down( $self->{refname}, ${$self->{cursor}}, $recurse ); |
|
2
|
|
|
|
|
15
|
|
789
|
|
|
|
|
|
|
|
790
|
|
|
|
|
|
|
#------------------------------ |
791
|
|
|
|
|
|
|
# The call to the down() method in the previous line will fail |
792
|
|
|
|
|
|
|
# if the target happens to be a SCALAR or some other item which |
793
|
|
|
|
|
|
|
# we can't cd into. In this case, we need to cd back up, |
794
|
|
|
|
|
|
|
# until the current ref is no longer a ref-to-ref. |
795
|
|
|
|
|
|
|
# |
796
|
|
|
|
|
|
|
# The following lines of code will be executed one time |
797
|
|
|
|
|
|
|
# for each *successful* previous call to the down() method, |
798
|
|
|
|
|
|
|
# which is what we want. We back out just like we came in. |
799
|
|
|
|
|
|
|
# |
800
|
2
|
50
|
33
|
|
|
22
|
if (ref($self->{cursor}) eq 'REF' and scalar @{$self->{refpath}} > 1) { |
|
0
|
|
|
|
|
0
|
|
801
|
|
|
|
|
|
|
|
802
|
0
|
0
|
0
|
|
|
0
|
print "Skipping up ref-to-ref.\n" |
803
|
|
|
|
|
|
|
if $self->{skipwarning} and $self->{warning}; |
804
|
0
|
|
|
|
|
0
|
$self->up(); |
805
|
|
|
|
|
|
|
} |
806
|
|
|
|
|
|
|
|
807
|
|
|
|
|
|
|
} #End if (exists $recurse->{ ${$self->{cursor}} }) |
808
|
|
|
|
|
|
|
|
809
|
|
|
|
|
|
|
} else { |
810
|
|
|
|
|
|
|
|
811
|
|
|
|
|
|
|
# Intentionally empty |
812
|
|
|
|
|
|
|
# |
813
|
|
|
|
|
|
|
# If 'skipdoublerefs' is not set, then we will be able to cd into |
814
|
|
|
|
|
|
|
# ref-to-refs and run ls from within them. |
815
|
|
|
|
|
|
|
|
816
|
|
|
|
|
|
|
} #End if ($self->{skipdoublerefs} and ref($self->{cursor}) eq "REF") |
817
|
|
|
|
|
|
|
|
818
|
28
|
|
|
|
|
101
|
return $self->{cursor}; |
819
|
|
|
|
|
|
|
|
820
|
|
|
|
|
|
|
} #End sub down |
821
|
|
|
|
|
|
|
|
822
|
|
|
|
|
|
|
|
823
|
|
|
|
|
|
|
|
824
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
825
|
|
|
|
|
|
|
# This function is used for "chdir'ing" up a reference. |
826
|
|
|
|
|
|
|
# |
827
|
|
|
|
|
|
|
sub up { |
828
|
|
|
|
|
|
|
|
829
|
13
|
|
|
13
|
0
|
1213
|
my ($self) = @_; |
830
|
|
|
|
|
|
|
|
831
|
13
|
100
|
|
|
|
16
|
return $self->{refpath}[0] if scalar @{$self->{refpath}} == 1; |
|
13
|
|
|
|
|
51
|
|
832
|
|
|
|
|
|
|
|
833
|
12
|
|
|
|
|
18
|
my $name = pop @{$self->{namepath}}; |
|
12
|
|
|
|
|
26
|
|
834
|
12
|
|
|
|
|
18
|
pop @{$self->{refpath}}; |
|
12
|
|
|
|
|
21
|
|
835
|
|
|
|
|
|
|
|
836
|
|
|
|
|
|
|
# We don't need to watch out for recursion here, |
837
|
|
|
|
|
|
|
# because we can only go back up the way we came down. |
838
|
|
|
|
|
|
|
# |
839
|
12
|
100
|
100
|
|
|
72
|
if ($self->{skipdoublerefs} and $name eq $self->{refname} and $#{$self->{refpath}} > 0) { |
|
3
|
|
66
|
|
|
15
|
|
840
|
|
|
|
|
|
|
|
841
|
3
|
50
|
33
|
|
|
566
|
print "Skipping up ref-to-ref.\n" if $self->{skipwarning} and $self->{warning}; |
842
|
3
|
|
|
|
|
13
|
$self->up(); |
843
|
|
|
|
|
|
|
} |
844
|
12
|
|
|
|
|
28
|
$self->{cursor} = $self->{refpath}[-1]; |
845
|
|
|
|
|
|
|
|
846
|
12
|
|
|
|
|
45
|
return $self->{cursor}; |
847
|
|
|
|
|
|
|
|
848
|
|
|
|
|
|
|
} #End sub up |
849
|
|
|
|
|
|
|
|
850
|
|
|
|
|
|
|
|
851
|
|
|
|
|
|
|
|
852
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
853
|
0
|
|
|
0
|
|
0
|
sub DESTROY { |
854
|
|
|
|
|
|
|
|
855
|
|
|
|
|
|
|
# Intentionally empty |
856
|
|
|
|
|
|
|
} |
857
|
|
|
|
|
|
|
|
858
|
|
|
|
|
|
|
|
859
|
|
|
|
|
|
|
|
860
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
861
|
|
|
|
|
|
|
# This is used for setting configuration variables OR |
862
|
|
|
|
|
|
|
# for invoking UNIX-like shell functions |
863
|
|
|
|
|
|
|
# |
864
|
|
|
|
|
|
|
sub AUTOLOAD { |
865
|
|
|
|
|
|
|
|
866
|
|
|
|
|
|
|
# Grab the name of the function we attempted to invoke |
867
|
|
|
|
|
|
|
# |
868
|
89
|
|
|
89
|
|
22866
|
(my $func = $AUTOLOAD) =~ s/^.*:://; |
869
|
|
|
|
|
|
|
|
870
|
89
|
|
|
|
|
122
|
my $self; |
871
|
|
|
|
|
|
|
|
872
|
89
|
50
|
33
|
|
|
483
|
if (defined $_[0] and ref($_[0]) eq __PACKAGE__) { |
|
|
0
|
0
|
|
|
|
|
873
|
|
|
|
|
|
|
|
874
|
89
|
|
|
|
|
127
|
$self = shift; |
875
|
|
|
|
|
|
|
|
876
|
|
|
|
|
|
|
} elsif (defined $WALKER and ref($WALKER) eq __PACKAGE__) { |
877
|
|
|
|
|
|
|
|
878
|
0
|
|
|
|
|
0
|
$self = $WALKER; |
879
|
0
|
0
|
|
|
|
0
|
$self->{autoprint} = 1 if $self->{autoprint} eq ""; |
880
|
|
|
|
|
|
|
|
881
|
|
|
|
|
|
|
} else { |
882
|
|
|
|
|
|
|
|
883
|
0
|
|
|
|
|
0
|
print "$func (AUTOLOAD): Use the walk() function to assign a target reference.\n"; |
884
|
0
|
|
|
|
|
0
|
return ""; |
885
|
|
|
|
|
|
|
} |
886
|
|
|
|
|
|
|
|
887
|
|
|
|
|
|
|
|
888
|
|
|
|
|
|
|
# This might be an invocation of a walker function... |
889
|
|
|
|
|
|
|
# |
890
|
89
|
100
|
|
|
|
226
|
if (exists $Commands{$func}) { |
891
|
|
|
|
|
|
|
|
892
|
80
|
50
|
33
|
|
|
403
|
unless (exists $self->{cursor} and ref $self->{cursor}) { |
893
|
|
|
|
|
|
|
|
894
|
0
|
|
|
|
|
0
|
print "$func (AUTOLOAD): No reference! Please use walk() to initialize a reference to a data structure.\n"; |
895
|
0
|
|
|
|
|
0
|
return ""; |
896
|
|
|
|
|
|
|
} |
897
|
|
|
|
|
|
|
|
898
|
80
|
|
|
|
|
191
|
my $retval = $self->parse_command($func,@_); |
899
|
80
|
|
|
|
|
117
|
chomp $retval; |
900
|
|
|
|
|
|
|
|
901
|
80
|
50
|
|
|
|
185
|
if ($self->{autoprint}) { |
902
|
|
|
|
|
|
|
|
903
|
0
|
|
|
|
|
0
|
print $retval; |
904
|
0
|
0
|
|
|
|
0
|
print $self->walker_pwd if $func =~ /(cd|chdir)/; |
905
|
|
|
|
|
|
|
} |
906
|
|
|
|
|
|
|
|
907
|
80
|
|
|
|
|
779
|
return $retval; |
908
|
|
|
|
|
|
|
|
909
|
|
|
|
|
|
|
|
910
|
|
|
|
|
|
|
# ...or it might be an attempt to set a configuration variable. |
911
|
|
|
|
|
|
|
# |
912
|
|
|
|
|
|
|
} else { |
913
|
|
|
|
|
|
|
|
914
|
9
|
|
|
|
|
26
|
my $msg = $self->walker_set($func,$_[0]); |
915
|
9
|
50
|
|
|
|
24
|
print $msg if ($msg); |
916
|
9
|
|
|
|
|
39
|
return $self->{$func}; |
917
|
|
|
|
|
|
|
} |
918
|
|
|
|
|
|
|
|
919
|
|
|
|
|
|
|
} |
920
|
|
|
|
|
|
|
|
921
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
922
|
|
|
|
|
|
|
# Check the values assigned to configuration variables, |
923
|
|
|
|
|
|
|
# and accept them if they are OK. |
924
|
|
|
|
|
|
|
# |
925
|
|
|
|
|
|
|
sub walker_set { |
926
|
|
|
|
|
|
|
|
927
|
15
|
|
|
15
|
0
|
564
|
my ($self,$key,$value) = @_; |
928
|
|
|
|
|
|
|
|
929
|
15
|
50
|
|
|
|
35
|
return "Attempt to assign to undefined key" |
930
|
|
|
|
|
|
|
unless defined $key; |
931
|
15
|
50
|
|
|
|
28
|
return "Attempt to assign undefined value to key '" . lc($key) . "'" |
932
|
|
|
|
|
|
|
unless defined $value; |
933
|
|
|
|
|
|
|
|
934
|
|
|
|
|
|
|
# Handle empty strings |
935
|
15
|
50
|
33
|
|
|
102
|
$value = '' if $value eq qq/''/ or $value eq q/""/; |
936
|
|
|
|
|
|
|
|
937
|
15
|
50
|
|
|
|
65
|
if ($value =~ /^".*"$/) { |
|
|
50
|
|
|
|
|
|
938
|
0
|
|
|
|
|
0
|
$value =~ s/^"(.*)"$/$1/; |
939
|
|
|
|
|
|
|
|
940
|
|
|
|
|
|
|
} elsif ($value =~ /^'.*'$/) { |
941
|
0
|
|
|
|
|
0
|
$value =~ s/^'(.*)'$/$1/; |
942
|
|
|
|
|
|
|
} |
943
|
|
|
|
|
|
|
|
944
|
15
|
|
|
|
|
21
|
my $msg = ""; |
945
|
|
|
|
|
|
|
|
946
|
15
|
|
|
|
|
29
|
for ($key) { |
947
|
|
|
|
|
|
|
|
948
|
|
|
|
|
|
|
/(truncatescalars|lscol?width|maxdepth)/i |
949
|
15
|
50
|
|
|
|
152
|
and do { |
950
|
0
|
|
|
|
|
0
|
my $key = $1; |
951
|
0
|
0
|
0
|
|
|
0
|
unless ($value =~ /\d+/ and $value >= 0) { |
952
|
0
|
|
|
|
|
0
|
$msg = lc($key) . " must be a positive integer"; last; |
|
0
|
|
|
|
|
0
|
|
953
|
|
|
|
|
|
|
} |
954
|
0
|
|
|
|
|
0
|
$self->{lc $key} = $value; |
955
|
0
|
|
|
|
|
0
|
last; |
956
|
|
|
|
|
|
|
}; |
957
|
|
|
|
|
|
|
/indent/i |
958
|
15
|
50
|
|
|
|
40
|
and do { |
959
|
0
|
0
|
|
|
|
0
|
unless ($value =~ /(1|2|3)/) { |
960
|
0
|
|
|
|
|
0
|
$msg = "indent must be a either 1, 2 or 3"; last; |
|
0
|
|
|
|
|
0
|
|
961
|
|
|
|
|
|
|
} |
962
|
0
|
|
|
|
|
0
|
$self->{indent} = $value; |
963
|
0
|
|
|
|
|
0
|
last; |
964
|
|
|
|
|
|
|
}; |
965
|
|
|
|
|
|
|
/rootname/i |
966
|
15
|
50
|
|
|
|
38
|
and do { |
967
|
0
|
|
|
|
|
0
|
$self->{rootname} = $value; |
968
|
0
|
0
|
|
|
|
0
|
$self->{namepath}[0] = $value if defined $self->{namepath}; |
969
|
0
|
0
|
|
|
|
0
|
$self->{prev_namepath}[0] = $value if defined $self->{prev_namepath}; |
970
|
0
|
|
|
|
|
0
|
last; |
971
|
|
|
|
|
|
|
}; |
972
|
|
|
|
|
|
|
/^arrow$/i |
973
|
15
|
50
|
|
|
|
43
|
and do { |
974
|
0
|
|
|
|
|
0
|
$msg = "Can't modify arrow directly. Instead, modify arrowshaft and arrowhead"; |
975
|
0
|
|
|
|
|
0
|
last; |
976
|
|
|
|
|
|
|
}; |
977
|
|
|
|
|
|
|
|
978
|
|
|
|
|
|
|
# We check this here, so that we can handle exceptional strings beforehand |
979
|
|
|
|
|
|
|
# |
980
|
15
|
50
|
|
|
|
39
|
unless (exists $Config{$key}) { |
981
|
|
|
|
|
|
|
|
982
|
0
|
|
|
|
|
0
|
$msg = "No such config variable as '" . lc($key) . "'"; |
983
|
0
|
|
|
|
|
0
|
return $msg; |
984
|
|
|
|
|
|
|
} |
985
|
|
|
|
|
|
|
|
986
|
|
|
|
|
|
|
# Otherwise, just accept whatever value. |
987
|
|
|
|
|
|
|
# |
988
|
15
|
50
|
|
|
|
81
|
$self->{$key} = $value if exists $self->{$key}; |
989
|
|
|
|
|
|
|
|
990
|
|
|
|
|
|
|
} #End for ($key) |
991
|
|
|
|
|
|
|
|
992
|
15
|
|
|
|
|
44
|
$self->{arrow} = $self->{arrowshaft} . $self->{arrowhead}; |
993
|
|
|
|
|
|
|
|
994
|
15
|
|
|
|
|
34
|
return $msg; |
995
|
|
|
|
|
|
|
|
996
|
|
|
|
|
|
|
} #End sub walker_set |
997
|
|
|
|
|
|
|
|
998
|
|
|
|
|
|
|
|
999
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
1000
|
|
|
|
|
|
|
# Implement chdir logic |
1001
|
|
|
|
|
|
|
# |
1002
|
|
|
|
|
|
|
sub walker_chdir { |
1003
|
|
|
|
|
|
|
|
1004
|
26
|
|
|
26
|
0
|
60
|
my ($self,$dirspec) = @_; |
1005
|
26
|
|
|
|
|
36
|
my @temp_refpath = (); |
1006
|
26
|
|
|
|
|
35
|
my @temp_namepath = (); |
1007
|
|
|
|
|
|
|
|
1008
|
26
|
|
|
|
|
53
|
$dirspec =~ s/^\s+//; # Strip leading whitespace |
1009
|
26
|
|
|
|
|
40
|
$dirspec =~ s/\s+$//; # Strip trailing whitespace |
1010
|
|
|
|
|
|
|
|
1011
|
|
|
|
|
|
|
#------------------------------ |
1012
|
|
|
|
|
|
|
# Handle cd - |
1013
|
|
|
|
|
|
|
# |
1014
|
26
|
50
|
|
|
|
51
|
if ($dirspec =~ m#^\s*-\s*$#) { |
1015
|
|
|
|
|
|
|
|
1016
|
|
|
|
|
|
|
# Swap swap, fizz fizz..... |
1017
|
|
|
|
|
|
|
# |
1018
|
0
|
|
|
|
|
0
|
@temp_namepath = @{$self->{namepath}}; |
|
0
|
|
|
|
|
0
|
|
1019
|
0
|
|
|
|
|
0
|
@{$self->{namepath}} = @{$self->{prev_namepath}}; |
|
0
|
|
|
|
|
0
|
|
|
0
|
|
|
|
|
0
|
|
1020
|
0
|
|
|
|
|
0
|
@{$self->{prev_namepath}} = @temp_namepath ; |
|
0
|
|
|
|
|
0
|
|
1021
|
|
|
|
|
|
|
|
1022
|
0
|
|
|
|
|
0
|
@temp_refpath = @{$self->{refpath}}; |
|
0
|
|
|
|
|
0
|
|
1023
|
0
|
|
|
|
|
0
|
@{$self->{refpath}} = @{$self->{prev_refpath}}; |
|
0
|
|
|
|
|
0
|
|
|
0
|
|
|
|
|
0
|
|
1024
|
0
|
|
|
|
|
0
|
@{$self->{prev_refpath}} = @temp_refpath ; |
|
0
|
|
|
|
|
0
|
|
1025
|
|
|
|
|
|
|
|
1026
|
|
|
|
|
|
|
# Use the last ref in the (now) current refpath |
1027
|
|
|
|
|
|
|
# |
1028
|
0
|
|
|
|
|
0
|
$self->{cursor} = $self->{refpath}[-1]; |
1029
|
|
|
|
|
|
|
|
1030
|
0
|
|
|
|
|
0
|
return $self->{cursor}; |
1031
|
|
|
|
|
|
|
|
1032
|
|
|
|
|
|
|
} else { |
1033
|
|
|
|
|
|
|
|
1034
|
|
|
|
|
|
|
# Remember our current paths into the structure, |
1035
|
|
|
|
|
|
|
# in case we have to abort for some reason. |
1036
|
|
|
|
|
|
|
# |
1037
|
26
|
|
|
|
|
34
|
@temp_refpath = @{$self->{refpath}}; |
|
26
|
|
|
|
|
72
|
|
1038
|
26
|
|
|
|
|
51
|
@temp_namepath = @{$self->{namepath}}; |
|
26
|
|
|
|
|
618
|
|
1039
|
|
|
|
|
|
|
|
1040
|
|
|
|
|
|
|
} #End if ($dirspec =~ m#^\s*-\s*$#) { |
1041
|
|
|
|
|
|
|
|
1042
|
|
|
|
|
|
|
#------------------------------ |
1043
|
|
|
|
|
|
|
# Handle dirspec's relative to the root |
1044
|
|
|
|
|
|
|
# |
1045
|
26
|
|
|
|
|
63
|
my $leading_slash = ""; |
1046
|
|
|
|
|
|
|
|
1047
|
26
|
100
|
|
|
|
87
|
if ($dirspec =~ m#^/#) { |
1048
|
|
|
|
|
|
|
|
1049
|
|
|
|
|
|
|
# Set the paths back to the beginning |
1050
|
14
|
|
|
|
|
15
|
$#{$self->{namepath}} = 0; |
|
14
|
|
|
|
|
70
|
|
1051
|
14
|
|
|
|
|
15
|
$#{$self->{refpath}} = 0; |
|
14
|
|
|
|
|
28
|
|
1052
|
|
|
|
|
|
|
|
1053
|
|
|
|
|
|
|
# Set cursor to the first item in the refpath |
1054
|
14
|
|
|
|
|
32
|
$self->{cursor} = $self->{refpath}[0]; |
1055
|
|
|
|
|
|
|
|
1056
|
|
|
|
|
|
|
# Strip any leading '/' chars from $dirspec |
1057
|
|
|
|
|
|
|
# |
1058
|
14
|
|
|
|
|
44
|
$dirspec =~ s#^/+##g; |
1059
|
|
|
|
|
|
|
|
1060
|
14
|
|
|
|
|
28
|
$leading_slash = '/'; |
1061
|
|
|
|
|
|
|
} |
1062
|
|
|
|
|
|
|
|
1063
|
|
|
|
|
|
|
#------------------------------ |
1064
|
|
|
|
|
|
|
# Handle all other dirspec's |
1065
|
|
|
|
|
|
|
# |
1066
|
26
|
|
|
|
|
72
|
my @dirs = split /\//, $dirspec; |
1067
|
|
|
|
|
|
|
|
1068
|
26
|
|
|
|
|
52
|
foreach (@dirs) { |
1069
|
|
|
|
|
|
|
|
1070
|
|
|
|
|
|
|
# The actual value of $self->{cursor} may be modified within this loop, |
1071
|
|
|
|
|
|
|
# so we have to re-check it each time through |
1072
|
|
|
|
|
|
|
# |
1073
|
31
|
|
|
|
|
68
|
my ($reftype,$refpackage) = reftype($self->{cursor}); |
1074
|
|
|
|
|
|
|
|
1075
|
31
|
|
|
|
|
50
|
my $dir = $_; |
1076
|
|
|
|
|
|
|
|
1077
|
31
|
50
|
|
|
|
106
|
if ($dir eq '.') { |
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
1078
|
|
|
|
|
|
|
|
1079
|
|
|
|
|
|
|
# Do nothing |
1080
|
|
|
|
|
|
|
|
1081
|
|
|
|
|
|
|
} elsif ($_ eq '..') { |
1082
|
|
|
|
|
|
|
|
1083
|
5
|
|
|
|
|
13
|
$self->up(); |
1084
|
|
|
|
|
|
|
|
1085
|
|
|
|
|
|
|
} elsif ($reftype eq "REF") { |
1086
|
|
|
|
|
|
|
|
1087
|
4
|
100
|
|
|
|
18
|
unless ($_ eq $self->{refname}) { |
1088
|
|
|
|
|
|
|
|
1089
|
1
|
50
|
|
|
|
4
|
print "'$leading_slash$dirspec' does not exist. " . |
1090
|
|
|
|
|
|
|
"Type 'cd $self->{refname}' to descend into reference.\n" |
1091
|
|
|
|
|
|
|
if $self->{warning}; |
1092
|
|
|
|
|
|
|
|
1093
|
1
|
|
|
|
|
4
|
@{$self->{refpath}} = @temp_refpath; |
|
1
|
|
|
|
|
3
|
|
1094
|
1
|
|
|
|
|
1
|
@{$self->{namepath}} = @temp_namepath; |
|
1
|
|
|
|
|
4
|
|
1095
|
1
|
|
|
|
|
3
|
$self->{cursor} = $self->{refpath}[-1]; |
1096
|
|
|
|
|
|
|
|
1097
|
1
|
|
|
|
|
4
|
return $self->{cursor}; |
1098
|
|
|
|
|
|
|
} |
1099
|
|
|
|
|
|
|
|
1100
|
3
|
|
|
|
|
3
|
$self->down($dir, ${ $self->{cursor} }); |
|
3
|
|
|
|
|
9
|
|
1101
|
|
|
|
|
|
|
|
1102
|
|
|
|
|
|
|
} elsif ($reftype eq "HASH") { |
1103
|
|
|
|
|
|
|
|
1104
|
22
|
50
|
|
|
|
63
|
unless (exists $self->{cursor}->{$dir}) { |
1105
|
|
|
|
|
|
|
|
1106
|
0
|
0
|
|
|
|
0
|
print "No such element as '$leading_slash$dirspec'.\n" if $self->{warning}; |
1107
|
|
|
|
|
|
|
|
1108
|
0
|
|
|
|
|
0
|
@{$self->{refpath}} = @temp_refpath; |
|
0
|
|
|
|
|
0
|
|
1109
|
0
|
|
|
|
|
0
|
@{$self->{namepath}} = @temp_namepath; |
|
0
|
|
|
|
|
0
|
|
1110
|
0
|
|
|
|
|
0
|
$self->{cursor} = $self->{refpath}[-1]; |
1111
|
|
|
|
|
|
|
|
1112
|
0
|
|
|
|
|
0
|
return $self->{cursor}; |
1113
|
|
|
|
|
|
|
|
1114
|
|
|
|
|
|
|
} else { |
1115
|
|
|
|
|
|
|
|
1116
|
22
|
|
|
|
|
65
|
$self->down($dir,$self->{cursor}->{$dir}); |
1117
|
|
|
|
|
|
|
} |
1118
|
|
|
|
|
|
|
|
1119
|
|
|
|
|
|
|
} elsif ($reftype eq "ARRAY") { |
1120
|
|
|
|
|
|
|
|
1121
|
0
|
0
|
0
|
|
|
0
|
unless ($dir =~ /^\d+$/ and scalar(@{ $self->{cursor} }) > $dir) { |
1122
|
|
|
|
|
|
|
|
1123
|
0
|
0
|
|
|
|
0
|
print "No such element as '$leading_slash$dirspec'.\n" if $self->{warning}; |
1124
|
0
|
|
|
|
|
0
|
@{$self->{refpath}} = @temp_refpath; |
|
0
|
|
|
|
|
0
|
|
1125
|
0
|
|
|
|
|
0
|
@{$self->{namepath}} = @temp_namepath; |
|
0
|
|
|
|
|
0
|
|
1126
|
0
|
|
|
|
|
0
|
$self->{cursor} = $self->{refpath}[-1]; |
1127
|
|
|
|
|
|
|
|
1128
|
0
|
|
|
|
|
0
|
return $self->{cursor}; |
1129
|
|
|
|
|
|
|
|
1130
|
|
|
|
|
|
|
} else { |
1131
|
|
|
|
|
|
|
|
1132
|
0
|
|
|
|
|
0
|
$self->down($dir,$self->{cursor}->[$dir]); |
1133
|
|
|
|
|
|
|
} |
1134
|
|
|
|
|
|
|
|
1135
|
|
|
|
|
|
|
} else { |
1136
|
|
|
|
|
|
|
|
1137
|
|
|
|
|
|
|
#------------------------------ |
1138
|
|
|
|
|
|
|
# If $self->{cursor} points to a SCALAR, CODE or something else, then the |
1139
|
|
|
|
|
|
|
# 'cd' command is ignored within it. We should never have chdir'ed |
1140
|
|
|
|
|
|
|
# there in the first place, so this message will only be printed |
1141
|
|
|
|
|
|
|
# if the author of this module has made an error. ;) |
1142
|
|
|
|
|
|
|
# |
1143
|
0
|
0
|
|
|
|
0
|
print "Don't know how to chdir from current directory ($reftype) into '$dirspec'.\n" |
1144
|
|
|
|
|
|
|
if $self->{warning}; |
1145
|
0
|
|
|
|
|
0
|
@{$self->{refpath}} = @temp_refpath; |
|
0
|
|
|
|
|
0
|
|
1146
|
0
|
|
|
|
|
0
|
@{$self->{namepath}} = @temp_namepath; |
|
0
|
|
|
|
|
0
|
|
1147
|
0
|
|
|
|
|
0
|
$self->{cursor} = $self->{refpath}[-1]; |
1148
|
|
|
|
|
|
|
|
1149
|
|
|
|
|
|
|
} #End if ($dir eq ... |
1150
|
|
|
|
|
|
|
|
1151
|
|
|
|
|
|
|
#------------------------------ |
1152
|
|
|
|
|
|
|
# If the calls to down() or up() have failed for some reason, |
1153
|
|
|
|
|
|
|
# then return to wherever were to begin with. |
1154
|
|
|
|
|
|
|
# Don't even bother to parse the rest of the path, |
1155
|
|
|
|
|
|
|
# just return immediately. |
1156
|
|
|
|
|
|
|
# |
1157
|
30
|
100
|
|
|
|
114
|
if (not defined $self->{cursor}) { |
1158
|
|
|
|
|
|
|
|
1159
|
3
|
|
|
|
|
5
|
@{$self->{refpath}} = @temp_refpath; |
|
3
|
|
|
|
|
7
|
|
1160
|
3
|
|
|
|
|
5
|
@{$self->{namepath}} = @temp_namepath; |
|
3
|
|
|
|
|
9
|
|
1161
|
3
|
|
|
|
|
1585
|
$self->{cursor} = $self->{refpath}[-1]; |
1162
|
|
|
|
|
|
|
|
1163
|
3
|
|
|
|
|
12
|
return $self->{cursor}; |
1164
|
|
|
|
|
|
|
} |
1165
|
|
|
|
|
|
|
|
1166
|
|
|
|
|
|
|
} #End foreach (@dirs) |
1167
|
|
|
|
|
|
|
|
1168
|
|
|
|
|
|
|
|
1169
|
|
|
|
|
|
|
# Looks like we successfully chdir'd from one place into another. |
1170
|
|
|
|
|
|
|
# Save our previous location in the structure into the "prev_" variables. |
1171
|
|
|
|
|
|
|
# The previous previous variables (meta-previous?) are now forgotton. |
1172
|
|
|
|
|
|
|
# |
1173
|
22
|
|
|
|
|
31
|
@{$self->{prev_refpath}} = @temp_refpath; |
|
22
|
|
|
|
|
63
|
|
1174
|
22
|
|
|
|
|
31
|
@{$self->{prev_namepath}} = @temp_namepath; |
|
22
|
|
|
|
|
102
|
|
1175
|
|
|
|
|
|
|
|
1176
|
|
|
|
|
|
|
} #End sub walker_chdir |
1177
|
|
|
|
|
|
|
|
1178
|
|
|
|
|
|
|
|
1179
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
1180
|
|
|
|
|
|
|
# Implement "ls" formatting logic |
1181
|
|
|
|
|
|
|
# |
1182
|
|
|
|
|
|
|
sub walker_ls { |
1183
|
|
|
|
|
|
|
|
1184
|
27
|
|
|
27
|
0
|
41
|
my ($self,$option) = @_; |
1185
|
27
|
|
|
|
|
59
|
my ($reftype,$refpackage) = reftype($self->{cursor}); |
1186
|
|
|
|
|
|
|
|
1187
|
27
|
|
|
|
|
49
|
my $retval = ""; |
1188
|
|
|
|
|
|
|
|
1189
|
27
|
100
|
|
|
|
61
|
if ($option =~ /l/) { |
1190
|
|
|
|
|
|
|
|
1191
|
20
|
|
|
|
|
27
|
my $dots = ""; |
1192
|
20
|
|
|
|
|
54
|
my $format = "%-$self->{lscol1width}s %-$self->{lscol2width}s %s\n"; |
1193
|
|
|
|
|
|
|
|
1194
|
20
|
100
|
|
|
|
51
|
if ($option =~ /a/) { |
1195
|
|
|
|
|
|
|
|
1196
|
14
|
|
|
|
|
14
|
my ($type,$value); |
1197
|
|
|
|
|
|
|
|
1198
|
14
|
100
|
|
|
|
16
|
if (scalar @{$self->{namepath}} > 1) { |
|
14
|
|
|
|
|
41
|
|
1199
|
|
|
|
|
|
|
|
1200
|
7
|
|
|
|
|
20
|
($type,$value) = $self->printref($self->{refpath}[-2]); |
1201
|
7
|
|
|
|
|
26
|
$dots .= sprintf( $format, '..', $type, $value ); |
1202
|
7
|
|
|
|
|
24
|
($type,$value) = $self->printref($self->{refpath}[-1]); |
1203
|
|
|
|
|
|
|
|
1204
|
|
|
|
|
|
|
} else { |
1205
|
|
|
|
|
|
|
|
1206
|
7
|
|
|
|
|
22
|
($type,$value) = $self->printref($self->{refpath}[-1]); |
1207
|
7
|
|
|
|
|
31
|
$dots .= sprintf( $format, '..', $type, $value ); |
1208
|
|
|
|
|
|
|
} |
1209
|
|
|
|
|
|
|
|
1210
|
14
|
|
|
|
|
40
|
$dots .= sprintf( $format , '.', $type, $value ); |
1211
|
|
|
|
|
|
|
} |
1212
|
|
|
|
|
|
|
|
1213
|
20
|
50
|
|
|
|
56
|
if ($reftype eq "REF") { |
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
1214
|
|
|
|
|
|
|
|
1215
|
0
|
|
|
|
|
0
|
$retval .= $dots; |
1216
|
0
|
|
|
|
|
0
|
my ($type,$value) = $self->printref(${ $self->{cursor} }); |
|
0
|
|
|
|
|
0
|
|
1217
|
0
|
|
|
|
|
0
|
$retval .= sprintf( $format, $self->{refname}, $type, $value ); |
1218
|
|
|
|
|
|
|
|
1219
|
|
|
|
|
|
|
} elsif ($reftype eq "HASH") { |
1220
|
|
|
|
|
|
|
|
1221
|
10
|
|
|
|
|
20
|
$retval .= $dots; |
1222
|
10
|
|
|
|
|
10
|
foreach (sort keys %{$self->{cursor}}) { |
|
10
|
|
|
|
|
62
|
|
1223
|
|
|
|
|
|
|
|
1224
|
60
|
|
|
|
|
157
|
my ($type,$value) = $self->printref($self->{cursor}->{$_}); |
1225
|
60
|
|
|
|
|
251
|
$retval .= sprintf( $format, $_, $type, $value ); |
1226
|
|
|
|
|
|
|
} |
1227
|
|
|
|
|
|
|
|
1228
|
|
|
|
|
|
|
} elsif ($reftype eq "ARRAY") { |
1229
|
|
|
|
|
|
|
|
1230
|
10
|
|
|
|
|
18
|
$retval .= $dots; |
1231
|
10
|
|
|
|
|
12
|
my $i = 0; |
1232
|
10
|
|
|
|
|
1049
|
foreach (@{ $self->{cursor} }) { |
|
10
|
|
|
|
|
28
|
|
1233
|
|
|
|
|
|
|
|
1234
|
30
|
|
|
|
|
63
|
my ($type,$value) = $self->printref($_); |
1235
|
30
|
|
|
|
|
137
|
$retval .= sprintf( $format, $i++, $type, $value ); |
1236
|
|
|
|
|
|
|
} |
1237
|
|
|
|
|
|
|
|
1238
|
|
|
|
|
|
|
} else { |
1239
|
|
|
|
|
|
|
|
1240
|
0
|
|
|
|
|
0
|
$retval .= "Current ref is a ref to " . $reftype . |
1241
|
|
|
|
|
|
|
", don't know how to emulate ls -l in it.\n"; |
1242
|
|
|
|
|
|
|
} |
1243
|
|
|
|
|
|
|
|
1244
|
|
|
|
|
|
|
} else { |
1245
|
|
|
|
|
|
|
|
1246
|
7
|
100
|
|
|
|
60
|
my $dots = ($option =~ /a/) ? "..\t.\t" : ""; |
1247
|
|
|
|
|
|
|
|
1248
|
7
|
50
|
|
|
|
21
|
if ($reftype eq "REF") { |
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
1249
|
|
|
|
|
|
|
|
1250
|
0
|
|
|
|
|
0
|
$retval .= $dots . $self->{refname} . "\n"; |
1251
|
|
|
|
|
|
|
|
1252
|
|
|
|
|
|
|
} elsif ($reftype eq "HASH") { |
1253
|
|
|
|
|
|
|
|
1254
|
3
|
|
|
|
|
6
|
$retval .= $dots; |
1255
|
3
|
|
|
|
|
4
|
foreach (sort keys %{ $self->{cursor} }) { |
|
3
|
|
|
|
|
36
|
|
1256
|
|
|
|
|
|
|
|
1257
|
18
|
|
|
|
|
27
|
$retval .= $_. "\t"; |
1258
|
|
|
|
|
|
|
} |
1259
|
3
|
|
|
|
|
7
|
$retval .= "\n"; |
1260
|
|
|
|
|
|
|
|
1261
|
|
|
|
|
|
|
} elsif ($reftype eq "ARRAY") { |
1262
|
|
|
|
|
|
|
|
1263
|
4
|
|
|
|
|
6
|
$retval .= $dots; |
1264
|
4
|
|
|
|
|
4
|
my $i = 0; |
1265
|
4
|
|
|
|
|
5
|
foreach (@{ $self->{cursor} }) { |
|
4
|
|
|
|
|
8
|
|
1266
|
|
|
|
|
|
|
|
1267
|
12
|
|
|
|
|
23
|
$retval .= $self->printref($_) . "\t"; |
1268
|
|
|
|
|
|
|
} |
1269
|
|
|
|
|
|
|
|
1270
|
|
|
|
|
|
|
} else { |
1271
|
|
|
|
|
|
|
|
1272
|
0
|
|
|
|
|
0
|
$retval .= "Current ref is a $reftype, don't know how to emulate ls in it.\n"; |
1273
|
|
|
|
|
|
|
} |
1274
|
|
|
|
|
|
|
|
1275
|
|
|
|
|
|
|
} |
1276
|
|
|
|
|
|
|
|
1277
|
27
|
|
|
|
|
94
|
return $retval; |
1278
|
|
|
|
|
|
|
|
1279
|
|
|
|
|
|
|
} #End sub walker_ls |
1280
|
|
|
|
|
|
|
|
1281
|
|
|
|
|
|
|
|
1282
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
1283
|
|
|
|
|
|
|
# Implement "cat" formatting logic |
1284
|
|
|
|
|
|
|
# |
1285
|
|
|
|
|
|
|
sub walker_cat { |
1286
|
|
|
|
|
|
|
|
1287
|
21
|
|
|
21
|
0
|
39
|
my ($self,$target) = @_; |
1288
|
21
|
|
|
|
|
45
|
my ($reftype,$refpackage) = reftype($self->{cursor}); |
1289
|
|
|
|
|
|
|
|
1290
|
21
|
|
|
|
|
35
|
my $retval = ""; |
1291
|
|
|
|
|
|
|
|
1292
|
|
|
|
|
|
|
# Prints "print--> "... |
1293
|
21
|
|
|
|
|
60
|
$retval = "print$self->{arrowshaft}$self->{arrow} '" . $target . "'\n"; |
1294
|
|
|
|
|
|
|
|
1295
|
21
|
50
|
|
|
|
70
|
if ($target eq ".") { |
|
|
50
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
1296
|
|
|
|
|
|
|
|
1297
|
0
|
|
|
|
|
0
|
$retval = $self->{cursor}; |
1298
|
|
|
|
|
|
|
|
1299
|
|
|
|
|
|
|
} elsif ($target eq '..') { |
1300
|
|
|
|
|
|
|
|
1301
|
0
|
0
|
|
|
|
0
|
$retval = ${$self->{refpath}[-2]} if (scalar @{$self->{namepath}} > 1); |
|
0
|
|
|
|
|
0
|
|
|
0
|
|
|
|
|
0
|
|
1302
|
0
|
0
|
|
|
|
0
|
$retval = ${$self->{refpath}[-1]} if (scalar @{$self->{namepath}} <= 1); |
|
0
|
|
|
|
|
0
|
|
|
0
|
|
|
|
|
0
|
|
1303
|
|
|
|
|
|
|
|
1304
|
|
|
|
|
|
|
} elsif ($reftype eq "HASH") { |
1305
|
|
|
|
|
|
|
|
1306
|
15
|
|
|
|
|
31
|
$retval = $self->{cursor}->{$target}; |
1307
|
|
|
|
|
|
|
|
1308
|
|
|
|
|
|
|
} elsif ($reftype eq "ARRAY") { |
1309
|
|
|
|
|
|
|
|
1310
|
6
|
|
|
|
|
13
|
$retval = $self->{cursor}->[$target]; |
1311
|
|
|
|
|
|
|
|
1312
|
|
|
|
|
|
|
} else { |
1313
|
|
|
|
|
|
|
|
1314
|
0
|
0
|
|
|
|
0
|
print "Current ref is a $reftype, don't know how to print from it." |
1315
|
|
|
|
|
|
|
if $self->{warning}; |
1316
|
|
|
|
|
|
|
} |
1317
|
|
|
|
|
|
|
|
1318
|
21
|
|
|
|
|
60
|
return $retval; |
1319
|
|
|
|
|
|
|
|
1320
|
|
|
|
|
|
|
} #End sub walker_cat |
1321
|
|
|
|
|
|
|
|
1322
|
|
|
|
|
|
|
|
1323
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
1324
|
|
|
|
|
|
|
# Print the current path |
1325
|
|
|
|
|
|
|
# |
1326
|
|
|
|
|
|
|
sub walker_pwd { |
1327
|
|
|
|
|
|
|
|
1328
|
0
|
|
|
0
|
0
|
0
|
my $self = shift; |
1329
|
0
|
|
|
|
|
0
|
return join $self->{arrow},@{$self->{namepath}}; |
|
0
|
|
|
|
|
0
|
|
1330
|
|
|
|
|
|
|
} |
1331
|
|
|
|
|
|
|
|
1332
|
|
|
|
|
|
|
|
1333
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
1334
|
|
|
|
|
|
|
# Invoke Data::Dumper::dump |
1335
|
|
|
|
|
|
|
# |
1336
|
|
|
|
|
|
|
sub walker_dump { |
1337
|
|
|
|
|
|
|
|
1338
|
0
|
|
|
0
|
0
|
0
|
my ($self,$target) = @_; |
1339
|
0
|
|
|
|
|
0
|
my ($reftype,$refpackage) = reftype($self->{cursor}); |
1340
|
|
|
|
|
|
|
|
1341
|
0
|
|
|
|
|
0
|
my $retval = ""; |
1342
|
|
|
|
|
|
|
|
1343
|
|
|
|
|
|
|
# Pass config values directly to Data::Dumper |
1344
|
|
|
|
|
|
|
# |
1345
|
0
|
|
|
|
|
0
|
local $Data::Dumper::Indent = $self->{indent}; |
1346
|
0
|
|
|
|
|
0
|
local $Data::Dumper::Maxdepth = $self->{maxdepth}; |
1347
|
|
|
|
|
|
|
|
1348
|
|
|
|
|
|
|
# Prints "dump--> "... |
1349
|
0
|
|
|
|
|
0
|
$retval .= "dump$self->{arrowshaft}$self->{arrow} '$target'\n"; |
1350
|
|
|
|
|
|
|
|
1351
|
0
|
0
|
|
|
|
0
|
if ($target eq ".") { |
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
1352
|
|
|
|
|
|
|
|
1353
|
0
|
|
|
|
|
0
|
$retval .= Data::Dumper->Dump( [ $self->{cursor} ] ); |
1354
|
|
|
|
|
|
|
|
1355
|
|
|
|
|
|
|
} elsif ($target eq '..') { |
1356
|
|
|
|
|
|
|
|
1357
|
0
|
|
|
|
|
0
|
$retval .= Data::Dumper->Dump([ $self->{refpath}[-2] ],[ $self->{namepath}[-2] ]) |
1358
|
0
|
0
|
|
|
|
0
|
if (scalar @{$self->{namepath}} > 1); |
1359
|
0
|
|
|
|
|
0
|
$retval .= Data::Dumper->Dump([ $self->{refpath}[-1] ],[ $self->{namepath}[-1] ]) |
1360
|
0
|
0
|
|
|
|
0
|
if (scalar @{$self->{namepath}} <= 1); |
1361
|
|
|
|
|
|
|
|
1362
|
|
|
|
|
|
|
} elsif ($reftype eq "REF") { |
1363
|
|
|
|
|
|
|
|
1364
|
0
|
|
|
|
|
0
|
$retval .= Data::Dumper->Dump( [ ${$self->{cursor}} ], [ $target ] ); |
|
0
|
|
|
|
|
0
|
|
1365
|
|
|
|
|
|
|
|
1366
|
|
|
|
|
|
|
} elsif ($reftype eq "HASH") { |
1367
|
|
|
|
|
|
|
|
1368
|
0
|
|
|
|
|
0
|
$retval .= Data::Dumper->Dump( [ $self->{cursor}->{$target} ], [ $target ] ); |
1369
|
|
|
|
|
|
|
|
1370
|
|
|
|
|
|
|
} elsif ($reftype eq "ARRAY") { |
1371
|
|
|
|
|
|
|
|
1372
|
0
|
|
|
|
|
0
|
$retval .= Data::Dumper->Dump( [ $self->{cursor}->[$target] ], [ $target ] ); |
1373
|
|
|
|
|
|
|
|
1374
|
|
|
|
|
|
|
} else { |
1375
|
|
|
|
|
|
|
|
1376
|
0
|
0
|
|
|
|
0
|
$retval .= "Current ref is a $reftype, don't know how to dump things from it." |
1377
|
|
|
|
|
|
|
if $self->{warning}; |
1378
|
|
|
|
|
|
|
} |
1379
|
|
|
|
|
|
|
|
1380
|
0
|
|
|
|
|
0
|
return $retval; |
1381
|
|
|
|
|
|
|
|
1382
|
|
|
|
|
|
|
} #End sub walker_dump |
1383
|
|
|
|
|
|
|
|
1384
|
|
|
|
|
|
|
|
1385
|
|
|
|
|
|
|
|
1386
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
1387
|
|
|
|
|
|
|
# Format the CLI prompt (this is called after each command) |
1388
|
|
|
|
|
|
|
# |
1389
|
|
|
|
|
|
|
sub walker_getprompt { |
1390
|
|
|
|
|
|
|
|
1391
|
21
|
|
|
21
|
0
|
86
|
my $self = shift; |
1392
|
|
|
|
|
|
|
|
1393
|
|
|
|
|
|
|
#------------------------------ |
1394
|
|
|
|
|
|
|
# Take a copy of the namepath, because we are going to munge it |
1395
|
|
|
|
|
|
|
# |
1396
|
21
|
|
|
|
|
22
|
my @temp_namepath = @{ $self->{namepath} }; |
|
21
|
|
|
|
|
79
|
|
1397
|
|
|
|
|
|
|
|
1398
|
21
|
|
|
|
|
27
|
my (%seen,%seen_twice); |
1399
|
21
|
|
|
|
|
22
|
my $count = 1; |
1400
|
|
|
|
|
|
|
|
1401
|
21
|
|
|
|
|
28
|
for (my $i = 0; $i < scalar @{$self->{refpath}}; $i++) { |
|
81
|
|
|
|
|
271
|
|
1402
|
|
|
|
|
|
|
|
1403
|
|
|
|
|
|
|
# Check to see if we are seeing this ref for the *second* time. |
1404
|
|
|
|
|
|
|
# If so, define it in the %seen_twice hash. |
1405
|
|
|
|
|
|
|
# |
1406
|
60
|
100
|
66
|
|
|
233
|
if ( |
1407
|
|
|
|
|
|
|
exists $seen{ $self->{refpath}[$i] } |
1408
|
|
|
|
|
|
|
and |
1409
|
|
|
|
|
|
|
not exists $seen_twice{ $self->{refpath}[$i] } |
1410
|
|
|
|
|
|
|
) { |
1411
|
|
|
|
|
|
|
|
1412
|
7
|
|
|
|
|
21
|
$seen_twice{ $self->{refpath}[$i] } = $count++; |
1413
|
|
|
|
|
|
|
} |
1414
|
|
|
|
|
|
|
|
1415
|
60
|
|
|
|
|
184
|
$seen{ $self->{refpath}[$i] } = 1; |
1416
|
|
|
|
|
|
|
} |
1417
|
|
|
|
|
|
|
|
1418
|
21
|
|
|
|
|
31
|
for (my $i = 0; $i < scalar @{$self->{refpath}}; $i++) { |
|
81
|
|
|
|
|
376
|
|
1419
|
|
|
|
|
|
|
|
1420
|
60
|
100
|
|
|
|
202
|
$temp_namepath[$i] .= "-" . $seen_twice{ $self->{refpath}[$i] } . "-" |
1421
|
|
|
|
|
|
|
if exists $seen_twice{ $self->{refpath}[$i] }; |
1422
|
|
|
|
|
|
|
} |
1423
|
|
|
|
|
|
|
|
1424
|
21
|
|
|
|
|
338
|
return sprintf "%s$self->{promptchar} ", join $self->{arrow},@temp_namepath; |
1425
|
|
|
|
|
|
|
|
1426
|
|
|
|
|
|
|
} #End sub walker_getprompt |
1427
|
|
|
|
|
|
|
|
1428
|
|
|
|
|
|
|
|
1429
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
1430
|
|
|
|
|
|
|
# Format help messages |
1431
|
|
|
|
|
|
|
# |
1432
|
|
|
|
|
|
|
sub walker_help { |
1433
|
|
|
|
|
|
|
|
1434
|
0
|
|
|
0
|
0
|
0
|
my ($self,$arg) = @_; |
1435
|
0
|
|
|
|
|
0
|
my $retval = ""; |
1436
|
|
|
|
|
|
|
|
1437
|
0
|
0
|
0
|
|
|
0
|
if (defined $arg and $arg =~ /show/) { |
1438
|
|
|
|
|
|
|
|
1439
|
0
|
|
|
|
|
0
|
($retval =<<" EOM") =~ s/^\s+//gm; |
1440
|
|
|
|
|
|
|
The following items can be configured |
1441
|
|
|
|
|
|
|
(current value is in parenthesis): |
1442
|
|
|
|
|
|
|
|
1443
|
|
|
|
|
|
|
rootname how the root node is displayed ("$$self{rootname}") |
1444
|
|
|
|
|
|
|
refname how embedded refs are listed ("$$self{refname}") |
1445
|
|
|
|
|
|
|
scalarname how simple scalars are listed ("$$self{scalarname}") |
1446
|
|
|
|
|
|
|
undefname how unefined scalars are listed ("$$self{undefname}") |
1447
|
|
|
|
|
|
|
promptchar customize the session prompt ("$$self{promptchar}") |
1448
|
|
|
|
|
|
|
arrowshaft first part of ref arrow ("$$self{arrowshaft}") |
1449
|
|
|
|
|
|
|
arrowhead last part of ref arrow ("$$self{arrowhead}") |
1450
|
|
|
|
|
|
|
|
1451
|
|
|
|
|
|
|
maxdepth maximum dump-depth (Data::Dumper) ($$self{maxdepth}) |
1452
|
|
|
|
|
|
|
indent amount of indent (Data::Dumper) ($$self{indent}) |
1453
|
|
|
|
|
|
|
lscol1width column widths for 'ls' displays ($$self{lscol1width}) |
1454
|
|
|
|
|
|
|
lscol2width column widths for 'ls' displays ($$self{lscol2width}) |
1455
|
|
|
|
|
|
|
|
1456
|
|
|
|
|
|
|
showrecursion note recursion in the prompt ($$self{showrecursion}) |
1457
|
|
|
|
|
|
|
showids show ref id numbers in ls lists ($$self{showids}) |
1458
|
|
|
|
|
|
|
skipdoublerefs hop over ref-to-refs during walks ($$self{skipdoublerefs}) |
1459
|
|
|
|
|
|
|
skipwarning warn when hopping over ref-to-refs ($$self{skipwarning}) |
1460
|
|
|
|
|
|
|
truncatescalars truncate scalars in 'ls' displays ($$self{truncatescalars}) |
1461
|
|
|
|
|
|
|
(use 0 for no truncation) |
1462
|
|
|
|
|
|
|
|
1463
|
|
|
|
|
|
|
type "show " to display a value |
1464
|
|
|
|
|
|
|
type "set " to assign a new value |
1465
|
|
|
|
|
|
|
EOM |
1466
|
|
|
|
|
|
|
|
1467
|
|
|
|
|
|
|
} else { |
1468
|
|
|
|
|
|
|
|
1469
|
0
|
|
|
|
|
0
|
($retval =<<" EOM") =~ s/^\s+//gsm; |
1470
|
|
|
|
|
|
|
The following commands are supported: |
1471
|
|
|
|
|
|
|
|
1472
|
|
|
|
|
|
|
cd like UNIX cd |
1473
|
|
|
|
|
|
|
ls like UNIX ls (also respects options -a, -l) |
1474
|
|
|
|
|
|
|
print prints the item as a scalar |
1475
|
|
|
|
|
|
|
dump invokes Data::Dumper |
1476
|
|
|
|
|
|
|
set set configuration variables |
1477
|
|
|
|
|
|
|
show show configuration variables |
1478
|
|
|
|
|
|
|
! or eval eval arbitrary perl (careful!) |
1479
|
|
|
|
|
|
|
help this help message |
1480
|
|
|
|
|
|
|
help set lists the availabe config variables |
1481
|
|
|
|
|
|
|
EOM |
1482
|
|
|
|
|
|
|
} |
1483
|
|
|
|
|
|
|
|
1484
|
0
|
|
|
|
|
0
|
return $retval; |
1485
|
|
|
|
|
|
|
|
1486
|
|
|
|
|
|
|
} #End sub walker_help |
1487
|
|
|
|
|
|
|
|
1488
|
|
|
|
|
|
|
|
1489
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
1490
|
|
|
|
|
|
|
# Show the walker's config variables |
1491
|
|
|
|
|
|
|
# |
1492
|
|
|
|
|
|
|
sub walker_show { |
1493
|
|
|
|
|
|
|
|
1494
|
0
|
|
|
0
|
0
|
0
|
my ($self,$arg) = @_; |
1495
|
0
|
|
|
|
|
0
|
my $retval = ""; |
1496
|
|
|
|
|
|
|
|
1497
|
0
|
0
|
0
|
|
|
0
|
if (defined $arg and $arg ne "") { |
1498
|
|
|
|
|
|
|
|
1499
|
0
|
|
|
|
|
0
|
my $key = lc $arg; |
1500
|
0
|
|
|
|
|
0
|
$key =~ s/^\s+//; |
1501
|
0
|
|
|
|
|
0
|
$key =~ s/\s+$//; |
1502
|
|
|
|
|
|
|
|
1503
|
0
|
0
|
|
|
|
0
|
unless (exists $self->{$key}) { |
1504
|
|
|
|
|
|
|
|
1505
|
0
|
|
|
|
|
0
|
return "No such config variable as '$key'\n"; |
1506
|
|
|
|
|
|
|
} |
1507
|
|
|
|
|
|
|
|
1508
|
|
|
|
|
|
|
# Print out the variable key and value. |
1509
|
|
|
|
|
|
|
# Quote anything that's not a decimal value. |
1510
|
|
|
|
|
|
|
# |
1511
|
0
|
0
|
|
|
|
0
|
if ($self->{$key} =~ /^(?:0|-?[1-9]\d{0,8})$/) { |
1512
|
0
|
|
|
|
|
0
|
$retval = "$key = $self->{$key}\n"; |
1513
|
|
|
|
|
|
|
} else { |
1514
|
0
|
|
|
|
|
0
|
$retval = "$key = '$self->{$key}'\n"; |
1515
|
|
|
|
|
|
|
} |
1516
|
|
|
|
|
|
|
|
1517
|
|
|
|
|
|
|
} else { |
1518
|
|
|
|
|
|
|
|
1519
|
0
|
|
|
|
|
0
|
foreach (sort { $a cmp $b } keys %Config) { |
|
0
|
|
|
|
|
0
|
|
1520
|
|
|
|
|
|
|
|
1521
|
|
|
|
|
|
|
# Print out the variable key and value. |
1522
|
|
|
|
|
|
|
# Quote anything that's not a decimal value. |
1523
|
|
|
|
|
|
|
# |
1524
|
0
|
0
|
|
|
|
0
|
if ($self->{$_} =~ /^(?:0|-?[1-9]\d{0,8})$/) { |
1525
|
0
|
|
|
|
|
0
|
$retval .= sprintf "%-15s = %s\n", lc($_), $self->{$_}; |
1526
|
|
|
|
|
|
|
} else { |
1527
|
0
|
|
|
|
|
0
|
$retval .= sprintf "%-15s = '%s'\n", lc($_), $self->{$_}; |
1528
|
|
|
|
|
|
|
} |
1529
|
|
|
|
|
|
|
} |
1530
|
|
|
|
|
|
|
} |
1531
|
|
|
|
|
|
|
|
1532
|
0
|
|
|
|
|
0
|
return $retval; |
1533
|
|
|
|
|
|
|
} |
1534
|
|
|
|
|
|
|
|
1535
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
1536
|
|
|
|
|
|
|
# Parse commands, either from the CLI or from an AUTOLOADed function. |
1537
|
|
|
|
|
|
|
# Dispatch to the proper internal methods. |
1538
|
|
|
|
|
|
|
# |
1539
|
|
|
|
|
|
|
sub parse_command { |
1540
|
|
|
|
|
|
|
|
1541
|
80
|
|
|
80
|
0
|
95
|
my $self = shift; |
1542
|
80
|
|
|
|
|
166
|
my $cmd = join ' ',@_; |
1543
|
|
|
|
|
|
|
|
1544
|
80
|
50
|
|
|
|
174
|
$cmd = '' unless defined $cmd; |
1545
|
80
|
|
|
|
|
92
|
my $retval = ""; |
1546
|
|
|
|
|
|
|
|
1547
|
|
|
|
|
|
|
#------------------------------------------------------------ |
1548
|
|
|
|
|
|
|
# Emulate the pwd command |
1549
|
|
|
|
|
|
|
# |
1550
|
80
|
50
|
|
|
|
910
|
if ($cmd =~ /^(pwd)$/) { |
|
|
50
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
1551
|
|
|
|
|
|
|
|
1552
|
0
|
|
|
|
|
0
|
$retval .= $self->walker_pwd . "\n"; |
1553
|
|
|
|
|
|
|
|
1554
|
|
|
|
|
|
|
#------------------------------------------------------------ |
1555
|
|
|
|
|
|
|
# Print the help blurb |
1556
|
|
|
|
|
|
|
# |
1557
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*(help|h)\s*$/) { |
1558
|
|
|
|
|
|
|
|
1559
|
0
|
|
|
|
|
0
|
$retval .= $self->walker_help; |
1560
|
|
|
|
|
|
|
|
1561
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*help\s+(set|show)\s*$/) { |
1562
|
|
|
|
|
|
|
|
1563
|
0
|
|
|
|
|
0
|
$retval .= $self->walker_help("show"); |
1564
|
|
|
|
|
|
|
|
1565
|
|
|
|
|
|
|
#------------------------------------------------------------ |
1566
|
|
|
|
|
|
|
# Emulate cd |
1567
|
|
|
|
|
|
|
# |
1568
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*(cd|chdir)\s+(.+)$/) { |
1569
|
|
|
|
|
|
|
|
1570
|
|
|
|
|
|
|
# Change directories, but don't print anything. |
1571
|
|
|
|
|
|
|
# (walker_chdir returns a reference) |
1572
|
|
|
|
|
|
|
# |
1573
|
26
|
|
|
|
|
61
|
$self->walker_chdir($2); |
1574
|
|
|
|
|
|
|
|
1575
|
|
|
|
|
|
|
#------------------------------------------------------------ |
1576
|
|
|
|
|
|
|
# Emulate ls -l |
1577
|
|
|
|
|
|
|
# |
1578
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*(lal|lla|all|ll\s+-?a|ls\s+-?al|ls\s+-?la|dir|ls\s+-?a\s+-?l|ls\s+-?l\s+-?a|la\s+-?l)\s*$/) { |
1579
|
|
|
|
|
|
|
|
1580
|
14
|
|
|
|
|
37
|
$retval .= $self->walker_ls("la"); |
1581
|
|
|
|
|
|
|
|
1582
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*(ll|ls\s+-?l|ls\s+-?l)\s*$/) { |
1583
|
|
|
|
|
|
|
|
1584
|
6
|
|
|
|
|
17
|
$retval .= $self->walker_ls("l"); |
1585
|
|
|
|
|
|
|
|
1586
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*(ls\s+-?a|la)\s*$/) { |
1587
|
|
|
|
|
|
|
|
1588
|
5
|
|
|
|
|
14
|
$retval .= $self->walker_ls("a"); |
1589
|
|
|
|
|
|
|
|
1590
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*(l|ls)\s*$/) { |
1591
|
|
|
|
|
|
|
|
1592
|
2
|
|
|
|
|
7
|
$retval .= $self->walker_ls(""); |
1593
|
|
|
|
|
|
|
|
1594
|
|
|
|
|
|
|
#------------------------------------------------------------ |
1595
|
|
|
|
|
|
|
# Emulate cat |
1596
|
|
|
|
|
|
|
# |
1597
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*(cat|type|print|p)\s+(.+?)\s*$/) { |
1598
|
|
|
|
|
|
|
|
1599
|
21
|
|
|
|
|
49
|
$retval .= $self->walker_cat($2) . "\n"; |
1600
|
|
|
|
|
|
|
|
1601
|
|
|
|
|
|
|
#------------------------------------------------------------ |
1602
|
|
|
|
|
|
|
# Invoke dump |
1603
|
|
|
|
|
|
|
# |
1604
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*(dump|d)\s+(.+?)\s*(\d*)$/) { |
1605
|
|
|
|
|
|
|
|
1606
|
0
|
|
|
|
|
0
|
$retval .= $self->walker_dump($2); |
1607
|
|
|
|
|
|
|
|
1608
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*(dump|d)\s*$/) { |
1609
|
|
|
|
|
|
|
|
1610
|
0
|
|
|
|
|
0
|
$retval .= $self->walker_dump('.'); |
1611
|
|
|
|
|
|
|
|
1612
|
|
|
|
|
|
|
#------------------------------------------------------------ |
1613
|
|
|
|
|
|
|
# Adjust config settings ("set indent 2") |
1614
|
|
|
|
|
|
|
# |
1615
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*set\s+(\S+?)\s+(.+)$/i) { |
1616
|
|
|
|
|
|
|
|
1617
|
6
|
|
|
|
|
21
|
my ($key,$value) = (lc($1),$2); |
1618
|
6
|
|
|
|
|
20
|
$value =~ s/^[=\s]*//; |
1619
|
6
|
|
|
|
|
22
|
$value =~ s/[\s]*$//; |
1620
|
|
|
|
|
|
|
|
1621
|
6
|
|
|
|
|
16
|
my $msg = $self->walker_set($key,$value); |
1622
|
6
|
50
|
|
|
|
15
|
$retval .= "$msg.\n" if $msg; |
1623
|
|
|
|
|
|
|
|
1624
|
|
|
|
|
|
|
|
1625
|
|
|
|
|
|
|
#------------------------------------------------------------ |
1626
|
|
|
|
|
|
|
# Show config settings ("show indent" etc.) |
1627
|
|
|
|
|
|
|
# |
1628
|
|
|
|
|
|
|
} elsif ($cmd =~ /^\s*show(.*)$/i) { |
1629
|
|
|
|
|
|
|
|
1630
|
0
|
0
|
|
|
|
0
|
my $arg = defined($1) ? $1 : ""; |
1631
|
|
|
|
|
|
|
|
1632
|
0
|
|
|
|
|
0
|
$retval .= $self->walker_show($arg); |
1633
|
|
|
|
|
|
|
|
1634
|
|
|
|
|
|
|
} else { |
1635
|
|
|
|
|
|
|
|
1636
|
0
|
|
|
|
|
0
|
$retval .= "Ignoring command '$cmd', could not parse. (Type 'help' for help.)\n"; |
1637
|
|
|
|
|
|
|
} |
1638
|
|
|
|
|
|
|
|
1639
|
80
|
|
|
|
|
167
|
return $retval; |
1640
|
|
|
|
|
|
|
|
1641
|
|
|
|
|
|
|
} #End sub parse_command |
1642
|
|
|
|
|
|
|
|
1643
|
|
|
|
|
|
|
|
1644
|
|
|
|
|
|
|
#--------------------------------------------------------------------------- |
1645
|
|
|
|
|
|
|
# "Walk" a data structure. This function implements the CLI. |
1646
|
|
|
|
|
|
|
# |
1647
|
|
|
|
|
|
|
sub cli { |
1648
|
|
|
|
|
|
|
|
1649
|
|
|
|
|
|
|
# This code handles both OO-invocation as a method and |
1650
|
|
|
|
|
|
|
# non-OO invocation |
1651
|
|
|
|
|
|
|
# |
1652
|
0
|
|
|
0
|
0
|
|
my $class = __PACKAGE__; |
1653
|
0
|
|
|
|
|
|
my ($self,$ref); |
1654
|
|
|
|
|
|
|
|
1655
|
0
|
0
|
0
|
|
|
|
if (defined $_[0] and $_[0] eq $class and defined $_[1] and ref $_[1]) { |
|
|
0
|
0
|
|
|
|
|
|
|
0
|
0
|
|
|
|
|
|
|
0
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
1656
|
|
|
|
|
|
|
|
1657
|
|
|
|
|
|
|
# cli() was invoked as a class method, |
1658
|
|
|
|
|
|
|
# so we create an object on the fly. This object will |
1659
|
|
|
|
|
|
|
# be destroyed as soon as $self goes out of scope, |
1660
|
|
|
|
|
|
|
# which is at the end of this function. |
1661
|
|
|
|
|
|
|
# |
1662
|
0
|
|
|
|
|
|
$self = new($class); |
1663
|
0
|
|
|
|
|
|
$ref = $_[1]; |
1664
|
0
|
0
|
|
|
|
|
$self->walk($ref) or return; |
1665
|
|
|
|
|
|
|
|
1666
|
|
|
|
|
|
|
} elsif (defined $_[0] and ref $_[0] eq $class and defined $_[1] and ref $_[1]) { |
1667
|
|
|
|
|
|
|
|
1668
|
|
|
|
|
|
|
# cli() was invoked as a method on an object, |
1669
|
|
|
|
|
|
|
# so we use this object. |
1670
|
|
|
|
|
|
|
# |
1671
|
0
|
|
|
|
|
|
($self,$ref) = @_; |
1672
|
0
|
0
|
|
|
|
|
$self->walk($ref) or return; |
1673
|
|
|
|
|
|
|
|
1674
|
|
|
|
|
|
|
} elsif (ref $_[0] eq $class and defined $_[0]->{cursor}) { |
1675
|
|
|
|
|
|
|
|
1676
|
|
|
|
|
|
|
# cli() was entered on a Data::Walker object which already exists, |
1677
|
|
|
|
|
|
|
# so we use that. |
1678
|
|
|
|
|
|
|
# |
1679
|
0
|
|
|
|
|
|
($self,$ref) = @_; |
1680
|
|
|
|
|
|
|
|
1681
|
|
|
|
|
|
|
} elsif (defined($WALKER) and ref($WALKER) eq __PACKAGE__) { |
1682
|
|
|
|
|
|
|
|
1683
|
|
|
|
|
|
|
# cli() was not invoked with any parameters, but there is an |
1684
|
|
|
|
|
|
|
# implicit Data::Walker object, so we use that. |
1685
|
|
|
|
|
|
|
# |
1686
|
0
|
|
|
|
|
|
$self = $WALKER; |
1687
|
|
|
|
|
|
|
|
1688
|
|
|
|
|
|
|
} else { |
1689
|
|
|
|
|
|
|
|
1690
|
0
|
|
|
|
|
|
print "cli: No reference!"; |
1691
|
0
|
|
|
|
|
|
return; |
1692
|
|
|
|
|
|
|
} |
1693
|
|
|
|
|
|
|
|
1694
|
0
|
|
|
|
|
|
printf "%s$self->{promptchar} ",join $self->{arrow},@{$self->{namepath}}; |
|
0
|
|
|
|
|
|
|
1695
|
|
|
|
|
|
|
|
1696
|
|
|
|
|
|
|
#------------------------------------------------------------ |
1697
|
|
|
|
|
|
|
# Command loop. We loop through here once for each command |
1698
|
|
|
|
|
|
|
# that the user enters at the prompt. |
1699
|
|
|
|
|
|
|
# |
1700
|
0
|
|
|
|
|
|
COMMAND: while(<>) { |
1701
|
|
|
|
|
|
|
|
1702
|
0
|
|
|
|
|
|
chomp; |
1703
|
0
|
0
|
|
|
|
|
next COMMAND unless /\S/; # Ignore empty commands |
1704
|
|
|
|
|
|
|
|
1705
|
0
|
0
|
|
|
|
|
return if m/^\s*(q|qu|quit|ex|exi|exti|exit)\s*$/i; # 50 ways to leave your CLI |
1706
|
|
|
|
|
|
|
|
1707
|
|
|
|
|
|
|
|
1708
|
|
|
|
|
|
|
#------------------------------------------------------------ |
1709
|
|
|
|
|
|
|
# eval: Take whatever the user typed in and eval it |
1710
|
|
|
|
|
|
|
# |
1711
|
0
|
0
|
|
|
|
|
if (s/^\s*(\!|eval)\s+//) { |
1712
|
|
|
|
|
|
|
|
1713
|
|
|
|
|
|
|
# prints "eval--> "... |
1714
|
|
|
|
|
|
|
# |
1715
|
0
|
|
|
|
|
|
print "eval$self->{arrowshaft}$self->{arrow} $_\n"; |
1716
|
|
|
|
|
|
|
|
1717
|
|
|
|
|
|
|
# Let the user refer |
1718
|
0
|
|
|
|
|
|
my ($par,$cur); |
1719
|
0
|
0
|
|
|
|
|
$par = $self->{refpath}->[-2] if scalar @{$self->{refpath}} > 1; |
|
0
|
|
|
|
|
|
|
1720
|
0
|
0
|
|
|
|
|
$par = $self->{refpath}->[-1] if scalar @{$self->{refpath}} == 1; |
|
0
|
|
|
|
|
|
|
1721
|
0
|
|
|
|
|
|
$cur = $self->{cursor}; |
1722
|
|
|
|
|
|
|
|
1723
|
0
|
|
|
|
|
|
s/\$$self->{curname}\b/\$cur/g; |
1724
|
0
|
|
|
|
|
|
s/\$$self->{parname}\b/\$par/g; |
1725
|
|
|
|
|
|
|
|
1726
|
0
|
|
|
|
|
|
my $res = eval; |
1727
|
0
|
0
|
|
|
|
|
$res = "undef" unless defined $res; |
1728
|
|
|
|
|
|
|
|
1729
|
|
|
|
|
|
|
# prints "retv--> "... |
1730
|
|
|
|
|
|
|
# |
1731
|
0
|
|
|
|
|
|
print "retv$self->{arrowshaft}$self->{arrow} $res\n"; |
1732
|
|
|
|
|
|
|
|
1733
|
|
|
|
|
|
|
} else { |
1734
|
|
|
|
|
|
|
|
1735
|
0
|
|
|
|
|
|
print $self->parse_command($_); |
1736
|
|
|
|
|
|
|
} |
1737
|
|
|
|
|
|
|
|
1738
|
|
|
|
|
|
|
} continue { #continuing COMMAND: while(<>) { |
1739
|
|
|
|
|
|
|
|
1740
|
0
|
|
|
|
|
|
print $self->walker_getprompt; |
1741
|
|
|
|
|
|
|
|
1742
|
|
|
|
|
|
|
} #End COMMAND: while(<>) { |
1743
|
|
|
|
|
|
|
|
1744
|
|
|
|
|
|
|
} #End sub cli |
1745
|
|
|
|
|
|
|
|
1746
|
|
|
|
|
|
|
|
1747
|
|
|
|
|
|
|
1; |
1748
|
|
|
|
|
|
|
|
1749
|
|
|
|
|
|
|
|