[ новости /+++ | форум | теги | ]

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 &quotewords() 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.
     &quotewords() 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_lines(), so if
     you're only splitting one line you can call &parse_lines()
     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 (quotes, backslashes, etc.) 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.,
     &quotewords() 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 &quotewords(),
     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

quote
     4 use of a backslash to remove the special meaning of a double-

double-quote)
     5 another simple word (note the lack of effect of the backslashed

     Replacing &quotewords('\s+', 0, q{this   is...}) with
     &shellwords(q{this   is...}) is a simpler way to accomplish
     the same thing.



AUTHORS
     Maintainer is Hal Pomeranz <pomeranz@netcom.com>, 1994-1997
     (Original author unknown).  Much of the code for
     &parse_line() (including the primary regexp) from Joerk
     Behrends <jbehrends@multimediaproduzenten.de>.

     Examples section another documentation provided by John
     Heidemann <johnh@ISI.EDU>

     Bug reports, patches, and nagging provided by lots of
     folks-- thanks everybody!  Special thanks to Michael Schwern
     <schwern@envirolink.org> for assuring me that a
     &nested_quotewords() would be useful, and to Jeff Friedl
     <jfriedl@yahoo-inc.com> for telling me not to worry about
     error-checking (sort of-- you had to be there).









Поиск по тексту MAN-ов: 


























Партнёры:










Хостинг:










Закладки на сайте

Проследить за страницей


Created 1996-2024 by Maxim Chirkov

Добавить, Поддержать, Вебмастеру