1Config::IniFiles(3) User Contributed Perl Documentation Config::IniFiles(3)
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6 Config::IniFiles - A module for reading .ini-style configuration files.
7
9 version 3.000002
10
12 use Config::IniFiles;
13 my $cfg = Config::IniFiles->new( -file => "/path/configfile.ini" );
14 print "The value is " . $cfg->val( 'Section', 'Parameter' ) . "."
15 if $cfg->val( 'Section', 'Parameter' );
16
18 Config::IniFiles provides a way to have readable configuration files
19 outside your Perl script. Configurations can be imported (inherited,
20 stacked,...), sections can be grouped, and settings can be accessed
21 from a tied hash.
22
24 version 3.000002
25
27 INI files consist of a number of sections, each preceded with the
28 section name in square brackets, followed by parameter names and their
29 values.
30
31 [a section]
32 Parameter=Value
33
34 [section 2]
35 AnotherParameter=Some value
36 Setting=Something else
37 Parameter=Different scope than the one in the first section
38
39 The first non-blank character of the line indicating a section must be
40 a left bracket and the last non-blank character of a line indicating a
41 section must be a right bracket. The characters making up the section
42 name can be any symbols at all. However section names must be unique.
43
44 Parameters are specified in each section as Name=Value. Any spaces
45 around the equals sign will be ignored, and the value extends to the
46 end of the line (including any whitespace at the end of the line.
47 Parameter names are localized to the namespace of the section, but must
48 be unique within a section.
49
50 Both the hash mark (#) and the semicolon (;) are comment characters.
51 by default (this can be changed by configuration). Lines that begin
52 with either of these characters will be ignored. Any amount of
53 whitespace may precede the comment character.
54
55 Multi-line or multi-valued parameters may also be defined ala UNIX
56 "here document" syntax:
57
58 Parameter=<<EOT
59 value/line 1
60 value/line 2
61 EOT
62
63 You may use any string you want in place of "EOT". Note that whatever
64 follows the "<<" and what appears at the end of the text MUST match
65 exactly, including any trailing whitespace.
66
67 Alternately, as a configuration option (default is off), continuation
68 lines can be allowed:
69
70 [Section]
71 Parameter=this parameter \
72 spreads across \
73 a few lines
74
76 Get a new Config::IniFiles object with the new method:
77
78 $cfg = Config::IniFiles->new( -file => "/path/config_file.ini" );
79 $cfg = new Config::IniFiles -file => "/path/config_file.ini";
80
81 Optional named parameters may be specified after the configuration file
82 name. See the new in the METHODS section, below.
83
84 Values from the config file are fetched with the val method:
85
86 $value = $cfg->val('Section', 'Parameter');
87
88 If you want a multi-line/value field returned as an array, just specify
89 an array as the receiver:
90
91 @values = $cfg->val('Section', 'Parameter');
92
94 new ( [-option=>value ...] )
95 Returns a new configuration object (or "undef" if the configuration
96 file has an error, in which case check the global
97 @Config::IniFiles::errors array for reasons why). One Config::IniFiles
98 object is required per configuration file. The following named
99 parameters are available:
100
101 -file filename
102 Specifies a file to load the parameters from. This 'file' may
103 actually be any of the following things:
104
105 1) the pathname of a file
106
107 $cfg = Config::IniFiles->new( -file => "/path/to/config_file.ini" );
108
109 2) a simple filehandle
110
111 $cfg = Config::IniFiles->new( -file => STDIN );
112
113 3) a filehandle glob
114
115 open( CONFIG, "/path/to/config_file.ini" );
116 $cfg = Config::IniFiles->new( -file => *CONFIG );
117
118 4) a reference to a glob
119
120 open( CONFIG, "/path/to/config_file.ini" );
121 $cfg = Config::IniFiles->new( -file => \*CONFIG );
122
123 5) an IO::File object
124
125 $io = IO::File->new( "/path/to/config_file.ini" );
126 $cfg = Config::IniFiles->new( -file => $io );
127
128 or
129
130 open my $fh, '<', "/path/to/config_file.ini" or die $!;
131 $cfg = Config::IniFiles->new( -file => $fh );
132
133 6) A reference to a scalar (requires newer versions of IO::Scalar)
134
135 $ini_file_contents = <<EOT
136 [section name]
137 Parameter=A value
138 Setting=Another value
139 EOT
140
141 $cfg = Config::IniFiles->new( -file => \$ini_file_contents );
142
143 If this option is not specified, (i.e. you are creating a
144 config file from scratch) you must specify a target file
145 using SetFileName in order to save the parameters.
146
147 -default section
148 Specifies a section to be used for default values. For
149 example, in the following configuration file, if you look up
150 the "permissions" parameter in the "joe" section, there is
151 none.
152
153 [all]
154 permissions=Nothing
155
156 [jane]
157 name=Jane
158 permissions=Open files
159
160 [joe]
161 name=Joseph
162
163 If you create your Config::IniFiles object with a default
164 section of "all" like this:
165
166 $cfg = Config::IniFiles->new( -file => "file.ini", -default => "all" );
167
168 Then requesting a value for a "permissions" in the [joe]
169 section will check for a value from [all] before returning
170 undef.
171
172 $permissions = $cfg->val( "joe", "permissions"); // returns "Nothing"
173
174 -fallback section
175 Specifies a section to be used for parameters outside a
176 section. Default is none. Without -fallback specified (which
177 is the default), reading a configuration file which has a
178 parameter outside a section will fail. With this set to, say,
179 "GENERAL", this configuration:
180
181 wrong=wronger
182
183 [joe]
184 name=Joseph
185
186 will be assumed as:
187
188 [GENERAL]
189 wrong=wronger
190
191 [joe]
192 name=Joseph
193
194 Note that Config::IniFiles will also omit the fallback
195 section header when outputting such configuration.
196
197 -nocase 0|1
198 Set -nocase => 1 to handle the config file in a case-
199 insensitive manner (case in values is preserved, however).
200 By default, config files are case-sensitive (i.e., a section
201 named 'Test' is not the same as a section named 'test').
202 Note that there is an added overhead for turning off case
203 sensitivity.
204
205 -import object
206 This allows you to import or inherit existing setting from
207 another Config::IniFiles object. When importing settings from
208 another object, sections with the same name will be merged
209 and parameters that are defined in both the imported object
210 and the -file will take the value of given in the -file.
211
212 If a -default section is also given on this call, and it does
213 not coincide with the default of the imported object, the new
214 default section will be used instead. If no -default section
215 is given, then the default of the imported object will be
216 used.
217
218 -allowcontinue 0|1
219 Set -allowcontinue => 1 to enable continuation lines in the
220 config file. i.e. if a line ends with a backslash "\", then
221 the following line is appended to the parameter value,
222 dropping the backslash and the newline character(s).
223
224 Default behavior is to keep a trailing backslash "\" as a
225 parameter value. Note that continuation cannot be mixed with
226 the "here" value syntax.
227
228 -allowempty 0|1
229 If set to 1, then empty files are allowed at ReadConfig time.
230 If set to 0 (the default), an empty configuration file is
231 considered an error.
232
233 -negativedeltas 0|1
234 If set to 1 (the default if importing this object from
235 another one), parses and honors lines of the following form
236 in the configuration file:
237
238 ; [somesection] is deleted
239
240 or
241
242 [inthissection]
243 ; thisparameter is deleted
244
245 If set to 0 (the default if not importing), these comments
246 are treated like ordinary ones.
247
248 The WriteConfig1)> form will output such comments to indicate
249 deleted sections or parameters. This way, reloading a delta
250 file using the same imported object produces the same results
251 in memory again. See " DELTA FEATURES" in IMPORT for more
252 details.
253
254 -commentchar 'char'
255 The default comment character is "#". You may change this by
256 specifying this option to another character. This can be any
257 character except alphanumeric characters, square brackets or
258 the "equal" sign.
259
260 -allowedcommentchars 'chars'
261 Allowed default comment characters are "#" and ";". By
262 specifying this option you may change the range of characters
263 that are used to denote a comment line to include any set of
264 characters
265
266 Note: that the character specified by -commentchar (see
267 above) is always part of the allowed comment characters.
268
269 Note 2: The given string is evaluated as a regular expression
270 character class, so '\' must be escaped if you wish to use
271 it.
272
273 -reloadwarn 0|1
274 Set -reloadwarn => 1 to enable a warning message (output to
275 STDERR) whenever the config file is reloaded. The reload
276 message is of the form:
277
278 PID <PID> reloading config file <file> at YYYY.MM.DD HH:MM:SS
279
280 Default behavior is to not warn (i.e. -reloadwarn => 0).
281
282 This is generally only useful when using Config::IniFiles in
283 a server or daemon application. The application is still
284 responsible for determining when the object is to be
285 reloaded.
286
287 -nomultiline 0|1
288 Set -nomultiline => 1 to output multi-valued parameter as:
289
290 param=value1
291 param=value2
292
293 instead of the default:
294
295 param=<<EOT
296 value1
297 value2
298 EOT
299
300 As the latter might not be compatible with all applications.
301
302 -handle_trailing_comment 0|1
303 Set -handle_trailing_comment => 1 to enable support of
304 parameter trailing comments.
305
306 For example, if we have a parameter line like this:
307
308 param1=value1;comment1
309
310 by default, handle_trailing_comment will be set to 0, and we
311 will get value1;comment1 as the value of param1. If we have
312 -handle_trailing_comment set to 1, then we will get value1 as
313 the value for param1, and comment1 as the trailing comment of
314 param1.
315
316 Set and get methods for trailing comments are provided as
317 "SetParameterTrailingComment" and
318 "GetParameterTrailingComment".
319
320 -php_compat 0|1
321 Set -php_compat => 1 to enable support for PHP like
322 configfiles.
323
324 The differences between parse_ini_file and Config::IniFiles
325 are:
326
327 # parse_ini_file
328 [group]
329 val1="value"
330 val2[]=1
331 val2[]=2
332
333 vs
334
335 # Config::IniFiles
336 [group]
337 val1=value
338 val2=1
339 val2=2
340
341 This option only affect parsing, not writing new configfiles.
342
343 Some features from parse_ini_file are not compatible:
344
345 [group]
346 val1="val"'ue'
347 val1[key]=1
348
349 val ($section, $parameter [, $default] )
350 Returns the value of the specified parameter ($parameter) in section
351 $section, returns undef (or $default if specified) if no section or no
352 parameter for the given section exists.
353
354 If you want a multi-line/value field returned as an array, just specify
355 an array as the receiver:
356
357 @values = $cfg->val('Section', 'Parameter');
358
359 A multi-line/value field that is returned in a scalar context will be
360 joined using $/ (input record separator, default is \n) if defined,
361 otherwise the values will be joined using \n.
362
363 exists($section, $parameter)
364 True if and only if there exists a section $section, with a parameter
365 $parameter inside, not counting default values.
366
367 push ($section, $parameter, $value, [ $value2, ...])
368 Pushes new values at the end of existing value(s) of parameter
369 $parameter in section $section. See below for methods to write the new
370 configuration back out to a file.
371
372 You may not set a parameter that didn't exist in the original
373 configuration file. push will return undef if this is attempted. See
374 newval below to do this. Otherwise, it returns 1.
375
376 setval ($section, $parameter, $value, [ $value2, ... ])
377 Sets the value of parameter $parameter in section $section to $value
378 (or to a set of values). See below for methods to write the new
379 configuration back out to a file.
380
381 You may not set a parameter that didn't exist in the original
382 configuration file. setval will return undef if this is attempted. See
383 newval below to do this. Otherwise, it returns 1.
384
385 newval($section, $parameter, $value [, $value2, ...])
386 Assigns a new value, $value (or set of values) to the parameter
387 $parameter in section $section in the configuration file.
388
389 delval($section, $parameter)
390 Deletes the specified parameter from the configuration file
391
392 ReadConfig
393 Forces the configuration file to be re-read. Returns undef if the file
394 can not be opened, no filename was defined (with the "-file" option)
395 when the object was constructed, or an error occurred while reading.
396
397 If an error occurs while parsing the INI file the
398 @Config::IniFiles::errors array will contain messages that might help
399 you figure out where the problem is in the file.
400
401 Sections
402 Returns an array containing section names in the configuration file.
403 If the nocase option was turned on when the config object was created,
404 the section names will be returned in lowercase.
405
406 SectionExists ( $sect_name )
407 Returns 1 if the specified section exists in the INI file, 0 otherwise
408 (undefined if section_name is not defined).
409
410 AddSection ( $sect_name )
411 Ensures that the named section exists in the INI file. If the section
412 already exists, nothing is done. In this case, the "new" section will
413 possibly contain data already.
414
415 If you really need to have a new section with no parameters in it,
416 check that the name that you're adding isn't in the list of sections
417 already.
418
419 DeleteSection ( $sect_name )
420 Completely removes the entire section from the configuration.
421
422 RenameSection ( $old_section_name, $new_section_name,
423 $include_groupmembers)
424 Renames a section if it does not already exist, optionally including
425 groupmembers
426
427 CopySection ( $old_section_name, $new_section_name, $include_groupmembers)
428 Copies one section to another optionally including groupmembers
429
430 Parameters ($sect_name)
431 Returns an array containing the parameters contained in the specified
432 section.
433
434 Groups
435 Returns an array containing the names of available groups.
436
437 Groups are specified in the config file as new sections of the form
438
439 [GroupName MemberName]
440
441 This is useful for building up lists. Note that parameters within a
442 "member" section are referenced normally (i.e., the section name is
443 still "Groupname Membername", including the space) - the concept of
444 Groups is to aid people building more complex configuration files.
445
446 SetGroupMember ( $sect )
447 Makes sure that the specified section is a member of the appropriate
448 group.
449
450 Only intended for use in newval.
451
452 RemoveGroupMember ( $sect )
453 Makes sure that the specified section is no longer a member of the
454 appropriate group. Only intended for use in DeleteSection.
455
456 GroupMembers ($group)
457 Returns an array containing the members of specified $group. Each
458 element of the array is a section name. For example, given the sections
459
460 [Group Element 1]
461 ...
462
463 [Group Element 2]
464 ...
465
466 GroupMembers would return ("Group Element 1", "Group Element 2").
467
468 SetWriteMode ($mode)
469 Sets the mode (permissions) to use when writing the INI file.
470
471 $mode must be a string representation of the octal mode.
472
473 GetWriteMode ($mode)
474 Gets the current mode (permissions) to use when writing the INI file.
475
476 $mode is a string representation of the octal mode.
477
478 WriteConfig ($filename [, %options])
479 Writes out a new copy of the configuration file. A temporary file is
480 written out and then renamed to the specified filename. Also see BUGS
481 below.
482
483 If "-delta" is set to a true value in %options, and this object was
484 imported from another (see "new"), only the differences between this
485 object and the imported one will be recorded. Negative deltas will be
486 encoded into comments, so that a subsequent invocation of new() with
487 the same imported object produces the same results (see the
488 -negativedeltas option in "new").
489
490 %options is not required.
491
492 Returns true on success, "undef" on failure.
493
494 RewriteConfig
495 Same as WriteConfig, but specifies that the original configuration file
496 should be rewritten.
497
498 GetFileName
499 Returns the filename associated with this INI file.
500
501 If no filename has been specified, returns undef.
502
503 SetFileName ($filename)
504 If you created the Config::IniFiles object without initialising from a
505 file, or if you just want to change the name of the file to use for
506 ReadConfig/RewriteConfig from now on, use this method.
507
508 Returns $filename if that was a valid name, undef otherwise.
509
510 $ini->OutputConfigToFileHandle($fh, $delta)
511 Writes OutputConfig to the $fh filehandle. $delta should be set to 1 1
512 if writing only delta. This is a newer and safer version of
513 "OutputConfig()" and one is encouraged to use it instead.
514
515 $ini->OutputConfig($delta)
516 Writes OutputConfig to STDOUT. Use select() to redirect STDOUT to the
517 output target before calling this function. Optional argument should be
518 set to 1 if writing only a delta. Also see OutputConfigToFileHandle
519
520 SetSectionComment($section, @comment)
521 Sets the comment for section $section to the lines contained in
522 @comment.
523
524 Each comment line will be prepended with the comment character (default
525 is "#") if it doesn't already have a comment character (ie: if the line
526 does not start with whitespace followed by an allowed comment
527 character, default is "#" and ";").
528
529 To clear a section comment, use DeleteSectionComment ($section)
530
531 GetSectionComment ($section)
532 Returns a list of lines, being the comment attached to section
533 $section. In scalar context, returns a string containing the lines of
534 the comment separated by newlines.
535
536 The lines are presented as-is, with whatever comment character was
537 originally used on that line.
538
539 DeleteSectionComment ($section)
540 Removes the comment for the specified section.
541
542 SetParameterComment ($section, $parameter, @comment)
543 Sets the comment attached to a particular parameter.
544
545 Any line of @comment that does not have a comment character will be
546 prepended with one. See "SetSectionComment($section, @comment)" above
547
548 GetParameterComment ($section, $parameter)
549 Gets the comment attached to a parameter. In list context returns all
550 comments - in scalar context returns them joined by newlines.
551
552 DeleteParameterComment ($section, $parameter)
553 Deletes the comment attached to a parameter.
554
555 GetParameterEOT ($section, $parameter)
556 Accessor method for the EOT text (in fact, style) of the specified
557 parameter. If any text is used as an EOT mark, this will be returned.
558 If the parameter was not recorded using HERE style multiple lines,
559 GetParameterEOT returns undef.
560
561 $cfg->SetParameterEOT ($section, $parameter, $EOT)
562 Accessor method for the EOT text for the specified parameter. Sets the
563 HERE style marker text to the value $EOT. Once the EOT text is set,
564 that parameter will be saved in HERE style.
565
566 To un-set the EOT text, use DeleteParameterEOT ($section, $parameter).
567
568 DeleteParameterEOT ($section, $parameter)
569 Removes the EOT marker for the given section and parameter. When
570 writing a configuration file, if no EOT marker is defined then "EOT" is
571 used.
572
573 SetParameterTrailingComment ($section, $parameter, $cmt)
574 Set the end trailing comment for the given section and parameter. If
575 there is a old comment for the parameter, it will be overwritten by the
576 new one.
577
578 If there is a new parameter trailing comment to be added, the value
579 should be added first.
580
581 GetParameterTrailingComment ($section, $parameter)
582 An accessor method to read the trailing comment after the parameter.
583 The trailing comment will be returned if there is one. A null string
584 will be returned if the parameter exists but there is no comment for
585 it. otherwise, undef will be returned.
586
587 Delete
588 Deletes the entire configuration file in memory.
589
591 tie %ini, 'Config::IniFiles', (-file=>$filename, [-option=>value ...] )
592 Using "tie", you can tie a hash to a Config::IniFiles object. This
593 creates a new object which you can access through your hash, so you use
594 this instead of the new method. This actually creates a hash of hashes
595 to access the values in the INI file. The options you provide through
596 "tie" are the same as given for the new method, above.
597
598 Here's an example:
599
600 use Config::IniFiles;
601
602 my %ini;
603 tie %ini, 'Config::IniFiles', ( -file => "/path/configfile.ini" );
604
605 print "We have $ini{Section}{Parameter}." if $ini{Section}{Parameter};
606
607 Accessing and using the hash works just like accessing a regular hash
608 and many of the object methods are made available through the hash
609 interface.
610
611 For those methods that do not coincide with the hash paradigm, you can
612 use the Perl "tied" function to get at the underlying object tied to
613 the hash and call methods on that object. For example, to write the
614 hash out to a new ini file, you would do something like this:
615
616 tied( %ini )->WriteConfig( "/newpath/newconfig.ini" ) ||
617 die "Could not write settings to new file.";
618
619 $val = $ini{$section}{$parameter}
620 Returns the value of $parameter in $section.
621
622 Multiline values accessed through a hash will be returned as a list in
623 list context and a concatenated value in scalar context.
624
625 $ini{$section}{$parameter} = $value;
626 Sets the value of $parameter in $section to $value.
627
628 To set a multiline or multi-value parameter just assign an array
629 reference to the hash entry, like this:
630
631 $ini{$section}{$parameter} = [$value1, $value2, ...];
632
633 If the parameter did not exist in the original file, it will be
634 created. However, Perl does not seem to extend autovivification to tied
635 hashes. That means that if you try to say
636
637 $ini{new_section}{new_paramters} = $val;
638
639 and the section 'new_section' does not exist, then Perl won't properly
640 create it. In order to work around this you will need to create a hash
641 reference in that section and then assign the parameter value.
642 Something like this should do nicely:
643
644 $ini{new_section} = {};
645 $ini{new_section}{new_paramters} = $val;
646
647 %hash = %{$ini{$section}}
648 Using the tie interface, you can copy whole sections of the ini file
649 into another hash. Note that this makes a copy of the entire section.
650 The new hash in no longer tied to the ini file, In particular, this
651 means -default and -nocase settings will not apply to %hash.
652
653 $ini{$section} = {}; %{$ini{$section}} = %parameters;
654 Through the hash interface, you have the ability to replace the entire
655 section with a new set of parameters. This call will fail, however, if
656 the argument passed in NOT a hash reference. You must use both lines,
657 as shown above so that Perl recognizes the section as a hash reference
658 context before COPYing over the values from your %parameters hash.
659
660 delete $ini{$section}{$parameter}
661 When tied to a hash, you can use the Perl "delete" function to
662 completely remove a parameter from a section.
663
664 delete $ini{$section}
665 The tied interface also allows you to delete an entire section from the
666 ini file using the Perl "delete" function.
667
668 %ini = ();
669 If you really want to delete all the items in the ini file, this will
670 do it. Of course, the changes won't be written to the actual file
671 unless you call RewriteConfig on the object tied to the hash.
672
673 Parameter names
674 my @keys = keys %{$ini{$section}}
675 while (($k, $v) = each %{$ini{$section}}) {...}
676 if( exists %{$ini{$section}}, $parameter ) {...}
677
678 When tied to a hash, you use the Perl "keys" and "each" functions to
679 iteratively list the parameters ("keys") or parameters and their values
680 ("each") in a given section.
681
682 You can also use the Perl "exists" function to see if a parameter is
683 defined in a given section.
684
685 Note that none of these will return parameter names that are part of
686 the default section (if set), although accessing an unknown parameter
687 in the specified section will return a value from the default section
688 if there is one.
689
690 Section names
691 foreach( keys %ini ) {...}
692 while (($k, $v) = each %ini) {...}
693 if( exists %ini, $section ) {...}
694
695 When tied to a hash, you use the Perl "keys" and "each" functions to
696 iteratively list the sections in the ini file.
697
698 You can also use the Perl "exists" function to see if a section is
699 defined in the file.
700
702 The -import option to "new" allows one to stack one Config::IniFiles
703 object on top of another (which might be itself stacked in turn and so
704 on recursively, but this is beyond the point). The effect, as briefly
705 explained in "new", is that the fields appearing in the composite
706 object will be a superposition of those coming from the ``original''
707 one and the lines coming from the file, the latter taking precedence.
708 For example, let's say that $master and "overlay" were created like
709 this:
710
711 my $master = Config::IniFiles->new(-file => "master.ini");
712 my $overlay = Config::IniFiles->new(-file => "overlay.ini",
713 -import => $master);
714
715 If the contents of "master.ini" and "overlay.ini" are respectively
716
717 ; master.ini
718 [section1]
719 arg0=unchanged from master.ini
720 arg1=val1
721
722 [section2]
723 arg2=val2
724
725 and
726
727 ; overlay.ini
728 [section1]
729 arg1=overridden
730
731 Then "$overlay->val("section1", "arg1")" is "overridden", while
732 "$overlay->val("section1", "arg0")" is "unchanged from master.ini".
733
734 This feature may be used to ship a ``global defaults'' configuration
735 file for a Perl application, that can be overridden piecewise by a much
736 shorter, per-site configuration file. Assuming UNIX-style path names,
737 this would be done like this:
738
739 my $defaultconfig = Config::IniFiles->new
740 (-file => "/usr/share/myapp/myapp.ini.default");
741 my $config = Config::IniFiles->new
742 (-file => "/etc/myapp.ini", -import => $defaultconfig);
743 # Now use $config and forget about $defaultconfig in the rest of
744 # the program
745
746 Starting with version 2.39, Config::IniFiles also provides features to
747 keep the importing / per-site configuration file small, by only saving
748 those options that were modified by the running program. That is, if
749 one calls
750
751 $overlay->setval("section1", "arg1", "anotherval");
752 $overlay->newval("section3", "arg3", "val3");
753 $overlay->WriteConfig('overlay.ini', -delta=>1);
754
755 "overlay.ini" would now contain
756
757 ; overlay.ini
758 [section1]
759 arg1=anotherval
760
761 [section3]
762 arg3=val3
763
764 This is called a delta file (see "WriteConfig"). The untouched
765 [section2] and arg0 do not appear, and the config file is therefore
766 shorter; while of course, reloading the configuration into $master and
767 $overlay, either through "$overlay->ReadConfig()" or through the same
768 code as above (e.g. when application restarts), would yield exactly the
769 same result had the overlay object been saved in whole to the file
770 system.
771
772 The only problem with this delta technique is one cannot delete the
773 default values in the overlay configuration file, only change them.
774 This is solved by a file format extension, enabled by the
775 -negativedeltas option to "new": if, say, one would delete parameters
776 like this,
777
778 $overlay->DeleteSection("section2");
779 $overlay->delval("section1", "arg0");
780 $overlay->WriteConfig('overlay.ini', -delta=>1);
781
782 The overlay.ini file would now read:
783
784 ; overlay.ini
785 [section1]
786 ; arg0 is deleted
787 arg1=anotherval
788
789 ; [section2] is deleted
790
791 [section3]
792 arg3=val3
793
794 Assuming $overlay was later re-read with "-negativedeltas => 1", the
795 parser would interpret the deletion comments to yield the correct
796 result, that is, [section2] and arg0 would cease to exist in the
797 $overlay object.
798
800 @Config::IniFiles::errors
801 Contains a list of errors encountered while parsing the configuration
802 file. If the new method returns undef, check the value of this to find
803 out what's wrong. This value is reset each time a config file is read.
804
806 · The output from [Re]WriteConfig/OutputConfig might not be as pretty
807 as it can be. Comments are tied to whatever was immediately below
808 them. And case is not preserved for Section and Parameter names if
809 the -nocase option was used.
810
811 · No locking is done by [Re]WriteConfig. When writing servers, take
812 care that only the parent ever calls this, and consider making your
813 own backup.
814
816 Note that this is only a reference for the package maintainers - one of
817 the upcoming revisions to this package will include a total clean up of
818 the data structure.
819
820 $iniconf->{cf} = "config_file_name"
821 ->{startup_settings} = \%orginal_object_parameters
822 ->{imported} = $object WHERE $object->isa("Config::IniFiles")
823 ->{nocase} = 0
824 ->{reloadwarn} = 0
825 ->{sects} = \@sections
826 ->{mysects} = \@sections
827 ->{sCMT}{$sect} = \@comment_lines
828 ->{group}{$group} = \@group_members
829 ->{parms}{$sect} = \@section_parms
830 ->{myparms}{$sect} = \@section_parms
831 ->{EOT}{$sect}{$parm} = "end of text string"
832 ->{pCMT}{$sect}{$parm} = \@comment_lines
833 ->{v}{$sect}{$parm} = $value OR \@values
834 ->{e}{$sect} = 1 OR does not exist
835 ->{mye}{$sect} = 1 OR does not exists
836
838 The original code was written by Scott Hutton. Then handled for a time
839 by Rich Bowen (thanks!), and was later managed by Jeremy Wadsack
840 (thanks!), and now is managed by Shlomi Fish (
841 <http://www.shlomifish.org/> ) with many contributions from various
842 other people.
843
844 In particular, special thanks go to (in roughly chronological order):
845
846 Bernie Cosell, Alan Young, Alex Satrapa, Mike Blazer, Wilbert van de
847 Pieterman, Steve Campbell, Robert Konigsberg, Scott Dellinger, R.
848 Bernstein, Daniel Winkelmann, Pires Claudio, Adrian Phillips, Marek
849 Rouchal, Luc St Louis, Adam Fischler, Kay Roepke, Matt Wilson, Raviraj
850 Murdeshwar and Slaven Rezic, Florian Pfaff
851
852 Geez, that's a lot of people. And apologies to the folks who were
853 missed.
854
855 If you want someone to bug about this, that would be:
856
857 Shlomi Fish <shlomif@cpan.org>
858
859 If you want more information, or want to participate, go to:
860
861 <http://sourceforge.net/projects/config-inifiles/>
862
863 Please submit bug reports using the Request Tracker interface at
864 <https://rt.cpan.org/Public/Dist/Display.html?Name=Config-IniFiles> .
865
866 Development discussion occurs on the mailing list
867 config-inifiles-dev@lists.sourceforge.net, which you can subscribe to
868 by going to the project web site (link above).
869
871 This software is copyright (c) 2000 by Scott Hutton and the rest of the
872 Config::IniFiles contributors.
873
874 This is free software; you can redistribute it and/or modify it under
875 the same terms as the Perl 5 programming language system itself.
876
878 Shlomi Fish <shlomif@cpan.org>
879
881 This software is copyright (c) 2000 by RBOW and others.
882
883 This is free software; you can redistribute it and/or modify it under
884 the same terms as the Perl 5 programming language system itself.
885
887 Please report any bugs or feature requests on the bugtracker website
888 <https://github.com/shlomif/perl-Config-IniFiles/issues>
889
890 When submitting a bug or request, please include a test-file or a patch
891 to an existing test-file that illustrates the bug or desired feature.
892
894 Perldoc
895 You can find documentation for this module with the perldoc command.
896
897 perldoc Config::IniFiles
898
899 Websites
900 The following websites have more information about this module, and may
901 be of help to you. As always, in addition to those websites please use
902 your favorite search engine to discover more resources.
903
904 · MetaCPAN
905
906 A modern, open-source CPAN search engine, useful to view POD in
907 HTML format.
908
909 <https://metacpan.org/release/Config-IniFiles>
910
911 · Search CPAN
912
913 The default CPAN search engine, useful to view POD in HTML format.
914
915 <http://search.cpan.org/dist/Config-IniFiles>
916
917 · RT: CPAN's Bug Tracker
918
919 The RT ( Request Tracker ) website is the default bug/issue
920 tracking system for CPAN.
921
922 <https://rt.cpan.org/Public/Dist/Display.html?Name=Config-IniFiles>
923
924 · AnnoCPAN
925
926 The AnnoCPAN is a website that allows community annotations of Perl
927 module documentation.
928
929 <http://annocpan.org/dist/Config-IniFiles>
930
931 · CPAN Ratings
932
933 The CPAN Ratings is a website that allows community ratings and
934 reviews of Perl modules.
935
936 <http://cpanratings.perl.org/d/Config-IniFiles>
937
938 · CPANTS
939
940 The CPANTS is a website that analyzes the Kwalitee ( code metrics )
941 of a distribution.
942
943 <http://cpants.cpanauthors.org/dist/Config-IniFiles>
944
945 · CPAN Testers
946
947 The CPAN Testers is a network of smoke testers who run automated
948 tests on uploaded CPAN distributions.
949
950 <http://www.cpantesters.org/distro/C/Config-IniFiles>
951
952 · CPAN Testers Matrix
953
954 The CPAN Testers Matrix is a website that provides a visual
955 overview of the test results for a distribution on various
956 Perls/platforms.
957
958 <http://matrix.cpantesters.org/?dist=Config-IniFiles>
959
960 · CPAN Testers Dependencies
961
962 The CPAN Testers Dependencies is a website that shows a chart of
963 the test results of all dependencies for a distribution.
964
965 <http://deps.cpantesters.org/?module=Config::IniFiles>
966
967 Bugs / Feature Requests
968 Please report any bugs or feature requests by email to
969 "bug-config-inifiles at rt.cpan.org", or through the web interface at
970 <https://rt.cpan.org/Public/Bug/Report.html?Queue=Config-IniFiles>. You
971 will be automatically notified of any progress on the request by the
972 system.
973
974 Source Code
975 The code is open to the world, and available for you to hack on. Please
976 feel free to browse it and play with it, or whatever. If you want to
977 contribute patches, please send me a diff or prod me to pull from your
978 repository :)
979
980 <https://github.com/shlomif/perl-Config-IniFiles>
981
982 git clone git://github.com/shlomif/perl-Config-IniFiles.git
983
984
985
986perl v5.30.0 2019-07-26 Config::IniFiles(3)