Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
Regexp::Common::URI::gUserrContributed Perl DocuRegexp::Common::URI::gopher(3)

NAME
       Regexp::Common::URI::gopher -- Returns a	pattern	for gopher URIs.

SYNOPSIS
	   use Regexp::Common qw /URI/;

	   while (<>) {
	       /$RE{URI}{gopher}/	and  print "Contains a gopher URI.\n";
	   }

DESCRIPTION
   $RE{URI}{gopher}{-notab}
       Gopher URIs are poorly defined. Originally, RFC 1738 defined gopher
       URIs, but they were later redefined in an internet draft. One that was
       expired in June 1997.

       The internet draft for gopher URIs defines them as follows:

	   "gopher:" "//" host [ ":" port ] "/"	gopher-type selector
			       [ "%09" search [	"%09" gopherplus_string	]]

       Unfortunally, a selector	is defined in such a way that characters may
       be escaped using	the URI	escape mechanism. This includes	tabs, which
       escaped are %09.	Hence, the syntax cannot distinguish between a URI
       that has	both a selector	and a search part, and an URI where the
       selector	includes an escaped tab. (The text of the draft	forbids	tabs
       to be present in	the selector though).

       $RE{URI}{gopher}	follows	the defined syntax. To disallow	escaped	tabs
       in the selector and search parts, use $RE{URI}{gopher}{-notab}.

       There are other differences between the text and	the given syntax.
       According to the	text, selector strings cannot have tabs, linefeeds or
       carriage	returns	in them. The text also allows the entire gopher-path,
       (the part after the slash following the hostport) to be empty; if this
       is empty	the slash may be omitted as well. However, this	isn't
       reflected in the	syntax.

       Under "{-keep}",	the following are returned:

       $1  The entire URI.

       $2  The scheme.

       $3  The host (name or address).

       $4  The port (if	any).

       $5  The "gopher-path", the part after the / following the host and
	   port.

       $6  The gopher-type.

       $7  The selector. (When no "{-notab}" is	used, this includes the	search
	   and gopherplus_string, including the	separating escaped tabs).

       $8  The search, if given. (Only when "{-notab}" is given).

       $9  The gopherplus_string, if given. (Only when "{-notab}" is given).

       head1 REFERENCES

       [RFC 1738]
	   Berners-Lee,	Tim, Masinter, L., McCahill, M.: Uniform Resource
	   Locators (URL). December 1994.

       [RFC 1808]
	   Fielding, R.: Relative Uniform Resource Locators (URL). June	1995.

       [GOPHER URL]
	   Krishnan, Murali R.,	Casey, James: "A Gopher	URL Format". Expired
	   Internet draft draft-murali-url-gopher. December 1996.

SEE ALSO
       Regexp::Common::URI for other supported URIs.

AUTHOR
       Damian Conway (damian@conway.org)

MAINTENANCE
       This package is maintained by Abigail (regexp-common@abigail.be).

BUGS AND IRRITATIONS
       Bound to	be plenty.

LICENSE	and COPYRIGHT
       This software is	Copyright (c) 2001 - 2016, Damian Conway and Abigail.

       This module is free software, and maybe used under any of the following
       licenses:

	1) The Perl Artistic License.	  See the file COPYRIGHT.AL.
	2) The Perl Artistic License 2.0. See the file COPYRIGHT.AL2.
	3) The BSD License.		  See the file COPYRIGHT.BSD.
	4) The MIT License.		  See the file COPYRIGHT.MIT.

perl v5.24.1			  2016-06-08	Regexp::Common::URI::gopher(3)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHOR | MAINTENANCE | BUGS AND IRRITATIONS | LICENSE and COPYRIGHT

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=Regexp::Common::URI::gopher&sektion=3&manpath=FreeBSD+12.1-RELEASE+and+Ports>

home | help