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ParseWords (3)
  • >> ParseWords (3) ( Solaris man: Библиотечные вызовы )
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    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 <[email protected]>, 1994-1997
         (Original author unknown).  Much of the code for
         &parse_line() (including the primary regexp) from Joerk
         Behrends <[email protected]>.
    
         Examples section another documentation provided by John
         Heidemann <[email protected]>
    
         Bug reports, patches, and nagging provided by lots of
         folks-- thanks everybody!  Special thanks to Michael Schwern
         <[email protected]> for assuring me that a
         &nested_quotewords() would be useful, and to Jeff Friedl
         <[email protected]> for telling me not to worry about
         error-checking (sort of-- you had to be there).
    
    
    
    


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