Provided by: libtext-format-perl_0.59-3_all 
NAME
Text::Format - Various subroutines to format text.
SYNOPSIS
use Text::Format;
my $text = Text::Format->new (
{
text => [], # all
columns => 72, # format, paragraphs, center
leftMargin => 0, # format, paragraphs, center
rightMargin => 0, # format, paragraphs, center
firstIndent => 4, # format, paragraphs
bodyIndent => 0, # format, paragraphs
rightFill => 0, # format, paragraphs
rightAlign => 0, # format, paragraphs
justify => 0, # format, paragraphs
extraSpace => 0, # format, paragraphs
abbrevs => {}, # format, paragraphs
hangingIndent => 0, # format, paragraphs
hangingText => [], # format, paragraphs
noBreak => 0, # format, paragraphs
noBreakRegex => {}, # format, paragraphs
tabstop => 8, # expand, unexpand, center
}
); # these are the default values
my %abbr = (foo => 1, bar => 1);
$text->abbrevs(\%abbr);
$text->abbrevs();
$text->abbrevs({foo => 1,bar => 1});
$text->abbrevs(qw/foo bar/);
$text->text(\@text);
$text->columns(132);
$text->tabstop(4);
$text->extraSpace(1);
$text->firstIndent(8);
$text->bodyIndent(4);
$text->config({tabstop => 4,firstIndent => 0});
$text->rightFill(0);
$text->rightAlign(0);
DESCRIPTION
The format routine will format under all circumstances even if the width isn't enough to
contain the longest words. Text::Wrap will die under these circumstances, although I am
told this is fixed. If columns is set to a small number and words are longer than that
and the leading 'whitespace' than there will be a single word on each line. This will let
you make a simple word list which could be indented or right aligned. There is a chance
for croaking if you try to subvert the module. If you don't pass in text then the
internal text is worked on, though not modfied.
Text::Format is meant for more powerful text formatting than what Text::Wrap allows. I
also have a module called Text::NWrap that is meant as a direct replacement for
Text::Wrap. Text::NWrap requires Text::Format since it uses Text::Format->format to do
the actual wrapping but gives you the interface of Text::Wrap.
General setup should be explained with the below graph.
columns
<------------------------------------------------------------>
<----------><------><---------------------------><----------->
leftMargin indent text is formatted into here rightMargin
indent is firstIndent or bodyIndent depending on where we are in the paragraph.
format @ARRAY || \@ARRAY || [<FILEHANDLE>] || NOTHING
Allows one to do some advanced formatting of text into a paragraph, with indent for
first line and body set separately. Can specify total width of text, right fill with
spaces or right align or justify (align to both margins), right margin and left
margin, non-breaking space, two spaces at end of sentence, hanging indents (tagged
paragraphs). Strips all leading and trailing whitespace before proceeding. Text is
first split into words and then reassembled. If no text is passed in then the
internal text in the object is formatted.
paragraphs @ARRAY || \@ARRAY || [<FILEHANDLE>] || NOTHING
Considers each element of text as a paragraph and if the indents are the same for
first line and the body then the paragraphs are separated by a single empty line
otherwise they follow one under the other. If hanging indent is set then a single
empty line will separate each paragraph as well. Calls format to do the actual
formatting. If no text is passed in then the internal text in the object is
formatted, though not changed.
center @ARRAY || NOTHING
Centers a list of strings in @ARRAY or internal text. Empty lines appear as, you
guessed it, empty lines. Center strips all leading and trailing whitespace before
proceeding. Left margin and right margin can be set. If no text is passed in then
the internal text in the object is formatted.
expand @ARRAY || NOTHING
Expand tabs in the list of text to tabstop number of spaces in @ARRAY or internal
text. Doesn't modify the internal text just passes back the modified text. If no
text is passed in then the internal text in the object is formatted.
unexpand @ARRAY || NOTHING
Tabstop number of spaces are turned into tabs in @ARRAY or internal text. Doesn't
modify the internal text just passes back the modified text. If no text is passed in
then the internal text in the object is formatted.
new \%HASH || NOTHING
Instantiates the object. If you pass a reference to a hash, or an anonymous hash then
it is used in setting attributes.
config \%HASH
Allows the configuration of all object attributes at once. Returns the object prior
to configuration. You can use it to make a clone of your object before you change
attributes.
columns NUMBER || NOTHING
Set width of text or retrieve width. This is total width and includes indentation and
the right and left margins.
tabstop NUMBER || NOTHING
Set tabstop size or retrieve tabstop size, only used by expand, unexpand and center.
firstIndent NUMBER || NOTHING
Set or get indent for the first line of paragraph. This is the number of spaces to
indent.
bodyIndent NUMBER || NOTHING
Set or get indent for the body of paragraph. This is the number of spaces to indent.
leftMargin NUMBER || NOTHING
Set or get width of left margin. This is the number of spaces used for the margin.
rightMargin NUMBER || NOTHING
Set or get width of right margin. This is the number of spaces used for the margin.
rightFill 0 || 1 || NOTHING
Set right fill or retrieve its value. The filling is done with spaces. Keep in mind
that if rightAlign is also set then both rightFill and rightAlign are ignored.
rightAlign 0 || 1 || NOTHING
Set right align or retrieve its value. Text is aligned with the right side of the
margin. Keep in mind that if rightFill is also set then both rightFill and rightAlign
are ignored.
justify 0 || 1 || NOTHING
Set justify or retrieve its value. Text is aligned with both margins, adding extra
spaces as necessary to align text with left and right margins. Keep in mind that if
either of rightAlign or rightFill are set then justify is ignored, even if both are
set in which case they are all ignored.
text \@ARRAY || NOTHING
Pass in a reference to your text, or an anonymous array of text that you want the
routines to manipulate. Returns the text held in the object.
hangingIndent 0 || 1 || NOTHING
Use hanging indents in front of a paragraph, returns current value of attribute. This
is also called a tagged paragraph.
hangingText \@ARRAY || NOTHING
The text that will be displayed in front of each paragraph, if you call format then
only the first element is used, if you call paragraphs then paragraphs cycles through
all of them. If you have more paragraphs than elements in your array than the
remainder of the paragraphs will not have a hanging indented text. Pass a reference
to your array. This is also called a tagged paragraph.
noBreak 0 || 1 || NOTHING
Set whether you want to use the non-breaking space feature (see noBreakRegex below).
noBreakRegex \%HASH || NOTHING
Pass in a reference to a hash that would hold the regexes on which not to break. In
order for this to happen, it requires noBreak to be set to true - see above. Without
any arguments, it returns the hash. E.g:
{'^Mrs?\.$' => '^\S+$','^\S+$' => '^(?:S|J)r\.$'}
don't break names such as Mr. Jones, Mrs. Jones, Jones Jr.
The breaking algorithm is simple. If there should not be a break at the current end
of sentence, then a backtrack is done till there are two words on which breaking is
allowed. If no two such words are found then the end of sentence is broken anyhow.
If there is a single word on current line then no backtrack is done and the word is
stuck on the end. This is so you can make a list of names for example.
Note: this feature requires noBreak to be set to true.
extraSpace 0 || 1 || NOTHING
Add extra space after end of sentence, normally format would add 1 space after end of
sentence, if this is set to 1 then 2 spaces are used. Abbreviations are not followed
by two spaces. There are a few internal abbreviations and you can add your own to the
object with abbrevs
abbrevs \%HASH || @ARRAY || NOTHING
Add to the current abbreviations, takes a reference to your hash or an array of
abbreviations, if called a second time the original reference is removed and replaced
by the new one. Returns the current INTERNAL abbreviations.
EXAMPLE
use Text::Format;
my $text = Text::Format->new;
$text->rightFill(1);
$text->columns(65);
$text->tabstop(4);
print $text->format("a line to format to an indented regular
paragraph using 65 character wide display");
print $text->paragraphs("paragraph one","paragraph two");
print $text->center("hello world","nifty line 2");
print $text->expand("\t\thello world\n","hmm,\twell\n");
print $text->unexpand(" hello world\n"," hmm");
$text->config({columns => 132, tabstop => 4});
$text = Text::Format->new();
print $text->format(@text);
print $text->paragraphs(@text);
print $text->center(@text);
print $text->format([<FILEHANDLE>]);
print $text->format([$fh->getlines()]);
print $text->paragraphs([<FILEHANDLE>]);
print $text->expand(@text);
print $text->unexpand(@text);
$text = Text::Format->new
({tabstop => 4,bodyIndent => 4,text => \@text});
print $text->format();
print $text->paragraphs();
print $text->center();
print $text->expand();
print $text->unexpand();
print Text::Format->new({columns => 95})->format(@text);
BUGS
Line length can exceed the number of specified columns if columns is set to a small number
and long words plus leading whitespace exceed the specified column length. Actually I see
this as a feature since it can be used to make up a nice word list.
LICENSE
Copyright (c) 1998 Gabor Egressy. All rights reserved.
This program is free software; you can redistribute and/or modify it under the same terms
as Perl itself.
AUTHOR
Gabor Egressy gabor@vmunix.com
Copyright (c) 1998 Gabor Egressy. All rights reserved. All wrongs reversed. This
program is free software; you can redistribute and/or modify it under the same terms as
Perl itself.
Adopted and modified by Shlomi Fish, <http://www.shlomifish.org/> - all rights disclaimed.
ACKNOWLEDGMENTS
Tom Phoenix
Found a bug with code for two spaces at the end of the sentence and provided a code
fragment for a better solution. Also some preliminary suggestions on the design.
Brad Appleton
Suggestion and explanation of hanging indents, suggestion for non-breaking whitespace,
general suggestions with regard to interface design.
Byron Brummer
Suggestion for better interface design and object design, code for better implementation
of getting abbreviations.
H. Merijn Brand
Suggestion for a justify feature and original code for doing the justification. I changed
the code to take into account the extra space at end of sentence feature.
Anne Wainwright
Inspired a documentation clarification about noBreak required by noBreakRegex , thanks to
a report with a problem.