1File::Inplace(3) User Contributed Perl Documentation File::Inplace(3)
2
3
4
6 File::Inplace - Perl module for in-place editing of files
7
9 use File::Inplace;
10
11 my $editor = new File::Inplace(file => "file.txt");
12 while (my ($line) = $editor->next_line) {
13 $editor->replace_line(reverse $line);
14 }
15 $editor->commit;
16
18 File::Inplace is a perl module intended to ease the common task of
19 editing a file in-place. Inspired by variations of perl's -i option,
20 this module is intended for somewhat more structured and reusable
21 editing than command line perl typically allows. File::Inplace
22 endeavors to guarantee file integrity; that is, either all of the
23 changes made will be saved to the file, or none will. It also offers
24 functionality such as backup creation, automatic field splitting per-
25 line, automatic chomping/unchomping, and aborting edits partially
26 through without affecting the original file.
27
29 File::Inplace offers one constructor that accepts a number of
30 parameters, one of which is required.
31
32 File::Inplace->new(file => "filename", ...)
33 file
34 The one required parameter. This is the name of the file to
35 edit.
36
37 suffix
38 The suffix for backup files. If not specified, no backups are
39 made.
40
41 chomp
42 If set to zero, then automatic chomping will not be performed.
43 Newlines (actually, the contents of $/) will remain in strings
44 returned from "next_line". Additionally, the contents of $/
45 will not be appended when replacing lines.
46
47 regex
48 If specified, then each line will be split by this parameter
49 when using "next_line_split" method. If unspecified, then this
50 defaults to \s+.
51
52 separator
53 The default character used to join each line when replace_line
54 is invoked with a list instead of a single value. Defaults to
55 a single space.
56
58 $editor->next_line ()
59 In scalar context, it returns the next line of the input file, or
60 undef if there is no line. In an array context, it returns a
61 single value of the line, or an empty list if there is no line.
62
63 $editor->replace_line (value)
64 Replaces the current line in the output file with the specified
65 value. If passed a list, then each valie is joined by the
66 "separator" specified at construction time.
67
68 $editor->next_line_split ()
69 Line "next_line", except splits based on the "regex" specified in
70 the constructor.
71
72 $editor->has_lines ()
73 Returns true if the file contains any further lines.
74
75 $editor->all_lines ()
76 Returns an array of all lines in the file being edited.
77
78 $editor->replace_all_lines (@lines)
79 Replaces all remaining lines in the file with the specified @lines.
80
81 $editor->commit ()
82 Completes the edit operation and saves the changes to the edited
83 file.
84
85 $editor->rollback ()
86 Aborts the edit process.
87
88 $editor->commit_to_backup ()
89 Saves edits to the backup file instead of the original file.
90
92 Chip Turner, <chipt@cpan.org>
93
95 Copyright (C) 2005 by Chip Turner
96
97 This library is free software; you can redistribute it and/or modify it
98 under the same terms as Perl itself, either Perl version 5.6.0 or, at
99 your option, any later version of Perl 5 you may have available.
100
102 Hey! The above document had some coding errors, which are explained
103 below:
104
105 Around line 283:
106 You forgot a '=back' before '=head1'
107
108 Around line 285:
109 '=item' outside of any '=over'
110
111
112
113perl v5.28.1 2005-01-29 File::Inplace(3)