NAME
String::BOM - simple utilities to check for a BOM and strip a BOM
VERSION
This document describes String::BOM version 0.3
SYNOPSIS
use String::BOM qw(string_has_bom);
if (my $bom = string_has_bom($string)) {
print "According to the string's BOM it is '$bom'\n";
}DESCRIPTION
See if a string or file has a BOM. Remove the BOM from a string or file.
You [c|sh]ould use PPI to do this is you are looking at a perl file
Something like this modified PPI sysnopsis example should detect and remove a BOM:
use PPI;
my $Document = PPI::Document->new('Module.pm');
# Does it contain a BOM?
if ( $Document->find_any('PPI::Token::BOM') ) {
print "Module contains BOM!!\n";
$Document->prune('PPI::Token::BOM');
$Document->save('Module.pm.bom_free');
}INTERFACE
All of these functions can be imported.
string_has_bom()
Takes a string and returns true (the type of BOM it is) if there is a BOM.
strip_bom_from_string()
Takes a string and returns a version with the BOM, if any, removed.
file_has_bom()
Takes a path and returns true (the type of BOM it is) if there is a BOM.
Check $! for file operation failure when it returns false.
strip_bom_from_file()
Takes a path and removes the BOM, if any, from it.
Check $! for file operation failure when it returns false.
A second argument with a true value will make it leave the original document on the file system with a .bak extension added.
Note: If the file had no BOM and was thus not edited then there is no .bak file.
DOM TYPES
The DOM data is the same as PPI::Token::BOM which are taken from http://www.unicode.org/faq/utf_bom.html#BOM.
DIAGNOSTICS
String::BOM throws no warnings or errors
CONFIGURATION AND ENVIRONMENT
String::BOM requires no configuration files or environment variables.
DEPENDENCIES
None.
INCOMPATIBILITIES
None reported.
BUGS AND LIMITATIONS
No bugs have been reported.
Please report any bugs or feature requests to bug-string-bom@rt.cpan.org, or through the web interface at http://rt.cpan.org.
SEE ALSO
File::Bom doesn't really do what this module does and has other utility functions that we don't need for the purposes of this module.
AUTHOR
Daniel Muey <http://drmuey.com/cpan_contact.pl>
LICENCE AND COPYRIGHT
Copyright (c) 2010, Daniel Muey <http://drmuey.com/cpan_contact.pl>. All rights reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.
DISCLAIMER OF WARRANTY
BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.
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