/ 
Text-FixEOL-1.08
River stage zero No dependents
/ Text::FixEOL

NAME

Text::FixEOL - Canonicalizes text to a specified EOL/EOF convention, repairing any 'mixed' usages

SYNOPSIS

use Text::FixEOL;

my $fixer = Text::FixEOL->new({ EOL     => 'platform|asis|mac|dos|unix|vms|netware|network|os2|cygwin|crlf|cr|lf|literal:$value',
                                EOF     => 'platform|add|asis|remove|mac|dos|unix|vms|netware|cygwin|network|os2',
                                FixLast => 'platform|yes|no|mac|dos|unix|vms|netware|network|os2|cygwin',
            });
my $fixed_text = $fixer->fix_eol($string);

my $mac_text     = $fixer->eol_to_mac($string);
my $windows_text = $fixer->eol_to_dos($string);
my $unix_text    = $fixer->eol_to_unix($string);
my $crlf_text    = $fixer->to_crlf($string);
my $network_text = $fixer->to_network($string);

DESCRIPTION

Converts the EOL and EOF conventions in the passed string to a canonicalization form that handles 'mixed' EOL conventions.

It canonicalizes EOL as \n (the platform defined EOL) if it does not know the particular platform. Can also 'fix' the end-of-file mark if needed and ensure that the last line of the string is EOL terminated.

METHODS

new({ [EOL => 'platform|asis|mac|dos|unix|vms|netware|network|os2|cygwin|crlf|cr|lf|literal:$value', ] [EOF => 'platform|add|asis|remove|mac|dos|unix|vms|netware|network|os2|cygwin', ] [FixLast => 'platform|yes|no|mac|dos|unix|vms|netware|network|os2|cygwin', ] });

Instantates a new Text::FixEOL object and (optionally) allows setting the modes of operation.

fix_eol($input);

Converts the EOLs/EOF in the passed text to a canonicalization form. This includes fixing EOLs to the appropriate values, as well as handling EOF issues. Specifically, the presence of terminal Ctrl-Z characters (EOF) and whether or not the last line of the string is terminated with EOL (FixLast).

When running in default mode (all setting at 'platform') on an unrecognized platform, it will attempt to convert to the local machine conventions using \n for EOL, 'remove' for EOF and 'yes' for FixLast.

It attempts to 'Do What I Mean' (DWIM) for mixed EOL values (text where there is a mixture of differing EOL conventions such as can happen when a document is editted in more than one environment).

Example:

my $fixed_string = $fixer->fix_eol($string);

The full grid of platform defaults is as follows:

                  EOL        EOF       FixLast
unix              \012      remove       yes
dos           \015\012        asis       yes
windows       \015\012        asis       yes
mswin32       \015\012        asis       yes
mac               \015      remove       yes
macos             \015      remove       yes
vms           \015\012      remove       yes
os2           \015\012        asis       yes
netware       \015\012        asis       yes
cygwin        \015\012        asis       yes
network       \015\012      remove       yes

The EOL canonicalization form is premised on the following example map which attempts to 'DWIM' for all cases of between 1 and 4 consecutive CR/LF characters. The values shown in the table are for illustrative purposes only. The actual values depend on the conversion modes specified.

["\012" => "\012"],
["\015" => "\012"],

["\012\015" => "\012"],
["\015\012" => "\012"],
["\015\012\015" => "\012\012"],
["\012\015\012" => "\012\012"],

["\012a\012b\012" => "\012a\012b\012"],
["\012a\012b\015" => "\012a\012b\012"],
["\012a\015b\012" => "\012a\012b\012"],
["\012a\015b\015" => "\012a\012b\012"],
["\015a\012b\012" => "\012a\012b\012"],
["\015a\012b\015" => "\012a\012b\012"],
["\015a\015b\012" => "\012a\012b\012"],
["\015a\015b\015" => "\012a\012b\012"],

["\012\015a\012\015b\012\015" => "\012a\012b\012"],
["\012\015a\012\015b\015"     => "\012a\012b\012"],
["\012\015a\015b\012\015"     => "\012a\012b\012"],
["\012\015a\015b\015"         => "\012a\012b\012"],
["\015a\012\015b\012\015"     => "\012a\012b\012"],
["\015a\012\015b\015"         => "\012a\012b\012"],
["\015a\015b\012\015"         => "\012a\012b\012"],

["\015\012a\015\012b\015\012" => "\012a\012b\012"],
["\015\012a\015\012b\015"     => "\012a\012b\012"],
["\015\012a\015b\015\012"     => "\012a\012b\012"],
["\015\012a\015b\015"         => "\012a\012b\012"],
["\015a\015\012b\015\012"     => "\012a\012b\012"],
["\015a\015\012b\015"         => "\012a\012b\012"],
["\015a\015b\015\012"         => "\012a\012b\012"],
["\015\012\015a\015\012\015b\015\012\015" => "\012\012a\012\012b\012\012"],
["\015\012\015a\015\012\015b\015"         => "\012\012a\012\012b\012"],
["\015\012\015a\015b\015\012\015"         => "\012\012a\012b\012\012"],
["\015\012\015a\015b\015"                 => "\012\012a\012b\012"],
["\015a\015\012\015b\015\012\015"         => "\012a\012\012b\012\012"],
["\015a\015\012\015b\015"                 => "\012a\012\012b\012"],
["\015a\015b\015\012\015"                 => "\012a\012b\012\012"],

["\012\012\012a\012\012\012b\012\012\012" => "\012\012\012a\012\012\012b\012\012\012"],
["\012\012\015a\012\012\015b\012\012\015" => "\012\012a\012\012b\012\012"],
["\012\015\012a\012\015\012b\012\015\012" => "\012\012a\012\012b\012\012"],
["\012\015\015a\012\015\015b\012\015\015" => "\012\012a\012\012b\012\012"],
["\015\012\012a\015\012\012b\015\012\012" => "\012\012a\012\012b\012\012"],
["\015\012\015a\015\012\015b\015\012\015" => "\012\012a\012\012b\012\012"],
["\015\015\012a\015\015\012b\015\015\012" => "\012\012a\012\012b\012\012"],
["\015\015\015a\015\015\015b\015\015\015" => "\012\012\012a\012\012\012b\012\012\012"],


["\012\012\012\012a\012\012\012\012b\012\012\012\012" => "\012\012\012\012a\012\012\012\012b\012\012\012\012"],
["\012\012\012\015a\012\012\012\015b\012\012\012\015" => "\012\012\012a\012\012\012b\012\012\012"],
["\012\012\015\012a\012\012\015\012b\012\012\015\012" => "\012\012\012a\012\012\012b\012\012\012"],
["\012\012\015\015a\012\012\015\015b\012\012\015\015" => "\012\012\012a\012\012\012b\012\012\012"],
["\012\015\012\012a\012\015\012\012b\012\015\012\012" => "\012\012\012a\012\012\012b\012\012\012"],
["\012\015\012\015a\012\015\012\015b\012\015\012\015" => "\012\012a\012\012b\012\012"],
["\012\015\015\012a\012\015\015\012b\012\015\015\012" => "\012\012a\012\012b\012\012"],
["\012\015\015\015a\012\015\015\015b\012\015\015\015" => "\012\012\012a\012\012\012b\012\012\012"],
["\015\012\012\012a\015\012\012\012b\015\012\012\012" => "\012\012\012a\012\012\012b\012\012\012"],
["\015\012\012\015a\015\012\012\015b\015\012\012\015" => "\012\012a\012\012b\012\012"],
["\015\012\015\012a\015\012\015\012b\015\012\015\012" => "\012\012a\012\012b\012\012"],
["\015\012\015\015a\015\012\015\015b\015\012\015\015" => "\012\012\012a\012\012\012b\012\012\012"],
["\015\015\012\012a\015\015\012\012b\015\015\012\012" => "\012\012\012a\012\012\012b\012\012\012"],
["\015\015\012\015a\015\015\012\015b\015\015\012\015" => "\012\012\012a\012\012\012b\012\012\012"],
["\015\015\015\012a\015\015\015\012b\015\015\015\012" => "\012\012\012a\012\012\012b\012\012\012"],
["\015\015\015\015a\015\015\015\015b\015\015\015\015" => "\012\012\012\012a\012\012\012\012b\012\012\012\012"],

Additionally any Ctrl-Z (EOF) characters are processed according to the EOF setting.

eol_to_unix($string);

Converts the passed string to Unix EOL/EOF conventions. This is equivalent to using fix_eol with

EOL     => 'unix',
EOF     => 'unix',
FixLast => 'unix'

The Unix EOL convention terminates all lines with \012. Ctrl-Z (EOF) characters at the end of the string are removed.

eol_to_dos($string);

Converts the passed string to Windows/DOS EOL/EOF conventions This is equivalent to using fix_eol with

EOL     => 'dos',
EOF     => 'dos',
FixLast => 'dos'

The DOS EOL convention terminates all lines with \015\012. Ctrl-Z (EOF) characters at the end of the string are left alone if present.

eol_to_mac($string);

Converts the passed string to Macintosh EOL/EOF conventions This is equivalent to using fix_eol with

EOL     => 'mac',
EOF     => 'mac',
FixLast => 'mac'

The Mac EOL convention terminates all lines with \012. Ctrl-Z (EOF) characters at the end of the string are removed.

eol_to_network($string);

Converts the passed string to network EOL/EOF conventions. This is equivalent to using fix_eol with

EOL     => 'network',
EOF     => 'network',
FixLast => 'network'

The network EOL convention terminates all lines with \015\012. Ctrl-Z (EOF) characters at the end of the string are removed.

eol_to_crlf($string);

Converts the passed string to CRLF format without otherwise changing it.

This is equivalent to using fix_eol with

EOL     => 'crlf',
EOF     => 'asis',
FixLast => 'no'
fix_last_handling(['platform|yes|no|mac|dos|unix|vms|netware|network|os2|cygwin']);

Get/set accessor that specifies whether or not the last line of the string should have an EOL added if missing. Default is 'platform'.

fix_last_mode;

Returns the current mode ('yes' or 'no') for the handling of the last line of the string (the actual 'yes'/'no' value rather than the mnemomic used for configuration).

'yes' indicates the processor will ensure the last line is terminated with an EOL value, appending one if needed.

'no' indicates the processor will not append a EOL if it is missing.

eol_handling(['platform|asis|mac|dos|unix|vms|netware|network|os2|cygwin|crlf|cr|lf|literal:$value']);

Sets/gets the end-of-line character handling property. The default is 'platform'.

The full list of supported settings is as follows:

 mac      - use Macintosh default (\015)
 macos    - use Macintosh default (\015)
 dos      - use DOS default       (\015\012)
 windows  - use DOS default       (\015\012)
 mswin32  - use DOS default       (\015\012)
 unix     - use Unix default      (\012)
 vms      - use vms default       (\015\012)
 netware  - use netware default   (\015\012)
 network  - use network default   (\015\012)
 os2      - use OS/2 default      (\015\012)
 cygwin   - use CygWin default    (\015\012)
 platform - use the current execution environment default.
 asis     - leave EOLs alone.
 crlf     - use CRLF              (\015\012)
 cr       - use CR                (\015)
 lf       - use LF                (\012)

'literal:$value' where you replace '$value' with a string value
       instructs the converter to use the literal you specify
       for EOL.
eol_mode;

Returns the current EOL string (the actual string value(s) for the EOL). This is the literal string value, not the mnemomic name used for configuration.

eof_handling(['platform|add|asis|remove|mac|dos|unix|vms|netware|network|os2|cygwin']);

Specifies what is to be done with DOS end-of-file characters (control-Z).

'add'      a Ctrl-Z (EOF) will be appended if not already present.
'asis'     the EOF (whatever it is) will be left alone.
'remove'   any trailing Ctrl-Z (EOF) characters will be removed.
'platform' use the current execution environment platform's default for EOF handling.

The platforms have the following default EOF handling behaviors:

            EOF Handling
unix           remove
dos              asis
windows          asis
mswin32          asis
mac            remove
macos          remove
vms            remove
os2              asis
netware          asis
cygwin           asis
network        remove
eof_mode;

Returns the current EOF mode ('asis', 'remove' or 'add'). This is the actual mode rather than the mnemomic used for configuration.

VERSION

1.08 released 2020.06.19

CHANGES

1.00 2005.05.02 - Initial Release

1.01 2005.05.03 - Changes to Build.PL to have Test::NoWarnings
                  and Test::More as prerequisite modules and changes
                  to META.yml to try to make CPANPLUS happy. Small documentation
                  change to 'new'. No functional changes.

1.02 2005.05.05 - Added more build tests and made various bug
                  fixes and tweaks. 100% code coverage for
                  tests reached. Added Test::Pod to tests.
                  Changed text in POD for licence to correctly
                  identify license as dual Artistic/GPL.

1.03 2005.06.17 - Removed NoWarnings test to improve ability to build on
                  older installations. Added pod coverage test. Made all
                  pod tests optional. No functional changes.

1.04 2005.09.09 - Tweaked POD build tests. Tweaked META.yml. Extended
                  license statement and appended liability disclaimer.
                  Appended Artistic and GPL licenses to distribution.
                  No functional changes.

1.05 2005.09.13 - Changed pod tests to be more CPANTS friendly.
                  Removed usage of 'warnings' pragma  and 'our'
                  for Perl 5.005 compatibility.

1.06 2011.07.30 - Replaced inadvertent Unicode usage in POD with non-Unicode.
                  No functional changes.

1.07 2020.06.19 - Maintainer update. Relicensed under the MIT License.
                  Minor tweaks to build process. Added meta_merge info
                  for GitHub. Set minimum Perl version to 5.006 and
                  added warnings.

1.08 2020.06.19 - Fixed Module::Build perl requires. Removed unused 'DEBUG' method.

AUTHOR

Jerilyn Franz <cpan@jerilyn.info>

COPYRIGHT

Copyright (c) Jerilyn Franz. All rights reserved.

LICENSE

This module is licensed under the MIT License

Copyright 2020 Jerilyn Franz

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

See https://opensource.org/licenses/MIT

DISCLAIMER

THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Use of this software in any way or in any form, source or binary, is not allowed in any country which prohibits disclaimers of any implied warranties of merchantability or fitness for a particular purpose or any disclaimers of a similar nature.

IN NO EVENT SHALL I BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION (INCLUDING, BUT NOT LIMITED TO, LOST PROFITS) EVEN IF I HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE

BUGS

None known.

TODO

Nothing.