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Text::ParseWords(3perl) Perl Programmers Reference Guide Text::ParseWords(3perl)
NAME
Text::ParseWords - parse text into an array of tokens or array of arrays
SYNOPSIS
use Text::ParseWords;
@lists = nested_quotewords($delim, $keep, @lines);
@words = quotewords($delim, $keep, @lines);
@words = shellwords(@lines);
@words = parse_line($delim, $keep, $line);
@words = old_shellwords(@lines); # DEPRECATED!
DESCRIPTION
The &nested_quotewords() and "ewords() functions accept a delimiter (which can be a
regular expression) and a list of lines and then breaks those lines up into a list of
words ignoring delimiters that appear inside quotes. "ewords() returns all of the
tokens in a single long list, while &nested_quotewords() returns a list of token lists
corresponding to the elements of @lines. &parse_line() does tokenizing on a single
string. The &*quotewords() functions simply call &parse_line(), so if you're only
splitting one line you can call &parse_line() directly and save a function call.
The $keep argument is a boolean flag. If true, then the tokens are split on the specified
delimiter, but all other characters (including quotes and backslashes) are kept in the
tokens. If $keep is false then the &*quotewords() functions remove all quotes and
backslashes that are not themselves backslash-escaped or inside of single quotes (i.e.,
"ewords() tries to interpret these characters just like the Bourne shell). NB: these
semantics are significantly different from the original version of this module shipped
with Perl 5.000 through 5.004. As an additional feature, $keep may be the keyword
"delimiters" which causes the functions to preserve the delimiters in each string as
tokens in the token lists, in addition to preserving quote and backslash characters.
&shellwords() is written as a special case of "ewords(), and it does token parsing
with whitespace as a delimiter-- similar to most Unix shells.
EXAMPLES
The sample program:
use Text::ParseWords;
@words = quotewords('\s+', 0, q{this is "a test" of\ quotewords \"for you});
$i = 0;
foreach (@words) {
print "$i: <$_>\n";
$i++;
}
produces:
0: <this>
1: <is>
2: <a test>
3: <of quotewords>
4: <"for>
5: <you>
demonstrating:
0 a simple word
1 multiple spaces are skipped because of our $delim
2 use of quotes to include a space in a word
3 use of a backslash to include a space in a word
4 use of a backslash to remove the special meaning of a double-quote
5 another simple word (note the lack of effect of the backslashed double-quote)
Replacing "quotewords('\s+', 0, q{this is...})" with "shellwords(q{this is...})" is a
simpler way to accomplish the same thing.
SEE ALSO
Text::CSV - for parsing CSV files
AUTHORS
Maintainer: Alexandr Ciornii <alexchornyATgmail.com>.
Previous maintainer: Hal Pomeranz <pomeranz AT netcom.com>, 1994-1997 (Original author
unknown). Much of the code for &parse_line() (including the primary regexp) from Joerk
Behrends <jbehrends AT multimediaproduzenten.de>.
Examples section another documentation provided by John Heidemann <johnh AT ISI.EDU>
Bug reports, patches, and nagging provided by lots of folks-- thanks everybody! Special
thanks to Michael Schwern <schwern AT envirolink.org> for assuring me that a
&nested_quotewords() would be useful, and to Jeff Friedl <jfriedl AT yahoo-inc.com> for
telling me not to worry about error-checking (sort of-- you had to be there).
COPYRIGHT AND LICENSE
This library is free software; you may redistribute and/or modify it under the same terms
as Perl itself.
perl v5.34.0 2025-07-25 Text::ParseWords(3perl)
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On Apache
Under GNU General Public License
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