use Carp;
use strict;
use vars qw($VERSION $VMS_TERMCAP);
$VERSION = '1.08';
# Version undef: Thu Dec 14 20:02:42 CST 1995 by sanders@bsdi.com
# Version 1.00: Thu Nov 30 23:34:29 EST 2000 by schwern@pobox.com
# [PATCH] $VERSION crusade, strict, tests, etc... all over lib/
# Version 1.01: Wed May 23 00:00:00 CST 2001 by d-lewart@uiuc.edu
# Avoid warnings in Tgetent and Tputs
# Version 1.02: Sat Nov 17 13:50:39 GMT 2001 by jns@gellyfish.com
# Altered layout of the POD
# Added Test::More to PREREQ_PM in Makefile.PL
# Fixed no argument Tgetent()
# Version 1.03: Wed Nov 28 10:09:38 GMT 2001
# VMS Support from Charles Lane <lane@DUPHY4.Physics.Drexel.Edu>
# Version 1.04: Thu Nov 29 16:22:03 GMT 2001
# Fixed warnings in test
# Version 1.05: Mon Dec 3 15:33:49 GMT 2001
# Don't try to fall back on infocmp if it's not there. From chromatic.
# Version 1.06: Thu Dec 6 18:43:22 GMT 2001
# Preload the default VMS termcap from Charles Lane
# Don't carp at setting OSPEED unless warnings are on.
# Version 1.07: Wed Jan 2 21:35:09 GMT 2002
# Sanity check on infocmp output from Norton Allen
# Repaired INSTALLDIRS thanks to Michael Schwern
# Version 1.08: Fri Aug 30 14:15:55 CEST 2002
# Cope with comments lines from 'infocmp' from Brendan O'Dea
# TODO:
# support Berkeley DB termcaps
# should probably be a .xs module
# force $FH into callers package?
# keep $FH in object at Tgetent time?
=head1 NAME
Term::Cap - Perl termcap interface
=head1 SYNOPSIS
require Term::Cap;
$terminal = Tgetent Term::Cap { TERM => undef, OSPEED => $ospeed };
$terminal->Tgoto('cm', $col, $row, $FH);
$terminal->Tputs('dl', $count, $FH);
$terminal->Tpad($string, $count, $FH);
=head1 DESCRIPTION
These are low-level functions to extract and use capabilities from
a terminal capability (termcap) database.
More information on the terminal capabilities will be found in the
termcap manpage on most Unix-like systems.
=head2 METHODS
=over 4
The output strings for B<Tputs> are cached for counts of 1 for performance.
B<Tgoto> and B<Tpad> do not cache. C<$self-E<gt>{_xx}> is the raw termcap
data and C<$self-E<gt>{xx}> is the cached version.
print $terminal->Tpad($self->{_xx}, 1);
B<Tgoto>, B<Tputs>, and B<Tpad> return the string and will also
output the string to $FH if specified.
=cut
# Preload the default VMS termcap.
# If a different termcap is required then the text of one can be supplied
# in $Term::Cap::VMS_TERMCAP before Tgetent is called.
if ( $^O eq 'VMS') {
}
# Returns a list of termcap files to check.
my @termcap_path;
# $TERMCAP, if it's a filespec
(($^O eq 'os2' || $^O eq 'MSWin32' || $^O eq 'dos')
# Add the users $TERMPATH
}
else {
# Defaults
push(@termcap_path,
);
}
# return the list of those termcaps that exist
return grep(-f, @termcap_path);
}
=item B<Tgetent>
Returns a blessed object reference which the user can
then use to send the control strings to the terminal using B<Tputs>
and B<Tgoto>.
The function extracts the entry of the specified terminal
type I<TERM> (defaults to the environment variable I<TERM>) from the
database.
It will look in the environment for a I<TERMCAP> variable. If
found, and the value does not begin with a slash, and the terminal
type name is the same as the environment string I<TERM>, the
I<TERMCAP> string is used instead of reading a termcap file. If
it does begin with a slash, the string is used as a path name of
the termcap file to search. If I<TERMCAP> does not begin with a
slash and name is different from I<TERM>, B<Tgetent> searches the
in that order, unless the environment variable I<TERMPATH> exists,
in which case it specifies a list of file pathnames (separated by
spaces or colons) to be searched B<instead>. Whenever multiple
files are searched and a tc field occurs in the requested entry,
the entry it names must be found in the same file or one of the
succeeding files. If there is a C<:tc=...:> in the I<TERMCAP>
environment variable string it will continue the search in the
files as above.
The extracted termcap entry is available in the object
as C<$self-E<gt>{TERMCAP}>.
It takes a hash reference as an argument with two optional keys:
=over 2
=item OSPEED
The terminal output bit rate (often mistakenly called the baud rate)
for this terminal - if not set a warning will be generated
and it will be defaulted to 9600. I<OSPEED> can be be specified as
an old DSD-style speed ( where 13 equals 9600).
=item TERM
The terminal type whose termcap entry will be used - if not supplied it will
default to $ENV{TERM}: if that is not set then B<Tgetent> will croak.
=back
It calls C<croak> on failure.
=cut
my $class = shift;
my ($self) = @_;
local $_;
# Compute PADDING factor from OSPEED (to be used by Tpad)
if ( $^W ) {
carp "OSPEED was not set, defaulting to 9600";
}
}
# delays for old style speeds
}
else {
}
# $tmp_term is always the next term (possibly :tc=...:) we are looking for
# protect any pattern metacharacters in $tmp_term
# $entry is the extracted termcap entry
}
my @termcap_path = termcap_path();
unless (@termcap_path || $entry)
{
# last resort--fake up a termcap from terminfo
if ( $^O eq 'VMS' ) {
$entry = $VMS_TERMCAP;
}
else {
eval {
$tmp =~ s/^#.*\n//gm; # remove comments
}
};
}
}
}
# 1 == next file
# 2 == search again
if ($entry) {
# ok, we're starting with $TERMCAP
$first++; # we're the first entry
# do we need to continue?
$tmp_term = $1;
# protect any pattern metacharacters in $tmp_term
}
else {
}
}
# This is eval'ed inside the while loop for each file
$search = q{
while (<TERMCAP>) {
next if /^\\t/ || /^#/;
if ($_ =~ m/(^|\\|)${termpat}[:|]/o) {
chomp;
s/^[^:]*:// if $first++;
$state = 0;
while ($_ =~ s/\\\\$//) {
defined(my $x = <TERMCAP>) or last;
$_ .= $x; chomp;
}
last;
}
}
$entry .= $_ if $_;
};
while ($state != 0) {
if ($state == 1) {
# get the next TERMCAP
$TERMCAP = shift @termcap_path
|| croak "failed termcap lookup on $tmp_term";
}
else {
# do the same file again
# prevent endless recursion
$max-- || croak "failed termcap loop at $tmp_term";
}
eval $search;
die $@ if $@;
close TERMCAP;
# If :tc=...: found then search this file again
# protect any pattern metacharacters in $tmp_term
}
$entry =~ s/:+\s*:+/:/g; # cleanup $entry
$entry =~ s/:+/:/g; # cleanup $entry
# print STDERR "DEBUG: $entry = ", $entry, "\n";
# Precompile $entry into the object
$entry =~ s/^[^:]*://;
# print STDERR "DEBUG: flag $1\n";
}
# print STDERR "DEBUG: unset $1\n";
}
# print STDERR "DEBUG: numeric $1 = $2\n";
}
# print STDERR "DEBUG: string $1 = $2\n";
$_ = $2;
s/\\E/\033/g;
s/\\n/\n/g;
s/\\r/\r/g;
s/\\t/\t/g;
s/\\b/\b/g;
s/\\f/\f/g;
s/\\\^/\377/g;
s/\^\?/\177/g;
s/\\(.)/$1/g;
s/\377/^/g;
}
# else { carp "junk in $term ignored: $field"; }
}
$self;
}
# $terminal->Tpad($string, $cnt, $FH);
=item B<Tpad>
Outputs a literal string with appropriate padding for the current terminal.
It takes three arguments:
=over 2
=item B<$string>
The literal string to be output. If it starts with a number and an optional
'*' then the padding will be increased by an amount relative to this number,
if the '*' is present then this amount will me multiplied by $cnt. This part
of $string is removed before output/
=item B<$cnt>
Will be used to modify the padding applied to string as described above.
=item B<$FH>
An optional filehandle (or IO::Handle ) that output will be printed to.
=back
The padded $string is returned.
=cut
my $self = shift;
$ms = $1;
$string = $3;
if ($decr > .1) {
}
}
$string;
}
# $terminal->Tputs($cap, $cnt, $FH);
=item B<Tputs>
Output the string for the given capability padded as appropriate without
any parameter substitution.
It takes three arguments:
=over 2
=item B<$cap>
The capability whose string is to be output.
=item B<$cnt>
A count passed to Tpad to modify the padding applied to the output string.
If $cnt is zero or one then the resulting string will be cached.
=item B<$FH>
An optional filehandle (or IO::Handle ) that output will be printed to.
=back
The appropriate string for the capability will be returned.
=cut
my $self = shift;
my $string;
if ($cnt > 1) {
} else {
# cache result because Tpad can be slow
}
}
$string;
}
# $terminal->Tgoto($cap, $col, $row, $FH);
=item B<Tgoto>
B<Tgoto> decodes a cursor addressing string with the given parameters.
There are four arguments:
=over 2
=item B<$cap>
The name of the capability to be output.
=item B<$col>
The first value to be substituted in the output string ( usually the column
in a cursor addressing capability )
=item B<$row>
The second value to be substituted in the output string (usually the row
in cursor addressing capabilities)
=item B<$FH>
An optional filehandle (or IO::Handle ) to which the output string will be
printed.
=back
Substitutions are made with $col and $row in the output string with the
following sprintf() line formats:
%% output `%'
%d output value as in printf %d
%2 output value as in printf %2d
%3 output value as in printf %3d
%. output value as in printf %c
%+x add x to value, then do %.
%>xy if value > x then add y, no output
%r reverse order of two parameters, no output
%i increment by one, no output
%B BCD (16*(value/10)) + (value%10), no output
%n exclusive-or all parameters with 0140 (Datamedia 2500)
%D Reverse coding (value - 2*(value%16)), no output (Delta Data)
The output string will be returned.
=cut
my $self = shift;
my $result = '';
my $after = '';
my $online = 0;
while ($string =~ /^([^%]*)%(.)(.*)/) {
$result .= $1;
$code = $2;
$string = $3;
if ($code eq 'd') {
}
elsif ($code eq '.') {
if ($online) {
}
else {
}
}
}
elsif ($code eq '+') {
}
elsif ($code eq 'r') {
}
elsif ($code eq '>') {
}
}
elsif ($code eq '2') {
}
elsif ($code eq '3') {
}
elsif ($code eq 'i') {
}
else {
return "OOPS";
}
}
$string;
}
=item B<Trequire>
Takes a list of capabilities as an argument and will croak if one is not
found.
=cut
my $self = shift;
foreach $cap (@_) {
}
croak "Terminal does not support: (@undefined)" if @undefined;
}
=back
=head1 EXAMPLES
use Term::Cap;
# Get terminal output speed
require POSIX;
my $termios = new POSIX::Termios;
$termios->getattr;
my $ospeed = $termios->getospeed;
# Old-style ioctl code to get ospeed:
# require 'ioctl.pl';
# ioctl(TTY,$TIOCGETP,$sgtty);
# ($ispeed,$ospeed) = unpack('cc',$sgtty);
# allocate and initialize a terminal structure
$terminal = Tgetent Term::Cap { TERM => undef, OSPEED => $ospeed };
# require certain capabilities to be available
# Output Routines, if $FH is undefined these just return the string
# Tgoto does the % expansion stuff with the given args
$terminal->Tgoto('cm', $col, $row, $FH);
# Tputs doesn't do any % expansion.
$terminal->Tputs('dl', $count = 1, $FH);
=head1 COPYRIGHT AND LICENSE
Please see the README file in distribution.
=head1 AUTHOR
This module is part of the core Perl distribution and is also maintained
for CPAN by Jonathan Stowe <jns@gellyfish.com>.
=head1 SEE ALSO
termcap(5)
=cut
# Below is a default entry for systems where there are terminals but no
# termcap
1;
co#80:li#24:
nd=\E[C:
kb=\0177: