D7net
Home
Console
Upload
information
Create File
Create Folder
About
Tools
:
/
usr
/
local
/
lp
/
sonarperl
/
man
/
man3
/
Filename :
Term::Cap.3
back
Copy
.\" -*- mode: troff; coding: utf-8 -*- .\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>. .ie n \{\ . ds C` "" . ds C' "" 'br\} .el\{\ . ds C` . ds C' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is >0, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .\" .\" Avoid warning from groff about undefined register 'F'. .de IX .. .nr rF 0 .if \n(.g .if rF .nr rF 1 .if (\n(rF:(\n(.g==0)) \{\ . if \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} . \} .\} .rr rF .\" ======================================================================== .\" .IX Title "Term::Cap 3" .TH Term::Cap 3 2023-05-26 "perl v5.38.0" "Perl Programmers Reference Guide" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH NAME Term::Cap \- Perl termcap interface .SH SYNOPSIS .IX Header "SYNOPSIS" .Vb 6 \& require Term::Cap; \& $terminal = Term::Cap\->Tgetent({ TERM => undef, OSPEED => $ospeed }); \& $terminal\->Trequire(qw/ce ku kd/); \& $terminal\->Tgoto(\*(Aqcm\*(Aq, $col, $row, $FH); \& $terminal\->Tputs(\*(Aqdl\*(Aq, $count, $FH); \& $terminal\->Tpad($string, $count, $FH); .Ve .SH DESCRIPTION .IX Header "DESCRIPTION" These are low-level functions to extract and use capabilities from a terminal capability (termcap) database. .PP More information on the terminal capabilities will be found in the termcap manpage on most Unix-like systems. .SS METHODS .IX Subsection "METHODS" The output strings for \fBTputs\fR are cached for counts of 1 for performance. \&\fBTgoto\fR and \fBTpad\fR do not cache. \f(CW\*(C`$self\->{_xx}\*(C'\fR is the raw termcap data and \f(CW\*(C`$self\->{xx}\*(C'\fR is the cached version. .PP .Vb 1 \& print $terminal\->Tpad($self\->{_xx}, 1); .Ve .PP \&\fBTgoto\fR, \fBTputs\fR, and \fBTpad\fR return the string and will also output the string to \f(CW$FH\fR if specified. .IP \fBTgetent\fR 4 .IX Item "Tgetent" Returns a blessed object reference which the user can then use to send the control strings to the terminal using \fBTputs\fR and \fBTgoto\fR. .Sp The function extracts the entry of the specified terminal type \fITERM\fR (defaults to the environment variable \fITERM\fR) from the database. .Sp It will look in the environment for a \fITERMCAP\fR variable. If found, and the value does not begin with a slash, and the terminal type name is the same as the environment string \fITERM\fR, the \&\fITERMCAP\fR string is used instead of reading a termcap file. If it does begin with a slash, the string is used as a path name of the termcap file to search. If \fITERMCAP\fR does not begin with a slash and name is different from \fITERM\fR, \fBTgetent\fR searches the files \fR\f(CI$HOME\fR\fI/.termcap\fR, \fI/etc/termcap\fR, and \fI/usr/share/misc/termcap\fR, in that order, unless the environment variable \fITERMPATH\fR exists, in which case it specifies a list of file pathnames (separated by spaces or colons) to be searched \fBinstead\fR. 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 \f(CW\*(C`:tc=...:\*(C'\fR in the \fITERMCAP\fR environment variable string it will continue the search in the files as above. .Sp The extracted termcap entry is available in the object as \f(CW\*(C`$self\->{TERMCAP}\*(C'\fR. .Sp It takes a hash reference as an argument with two optional keys: .RS 4 .IP OSPEED 2 .IX Item "OSPEED" The terminal output bit rate (often mistakenly called the baud rate) for this terminal \- if not set a warning will be generated and it will be defaulted to 9600. \fIOSPEED\fR can be specified as either a POSIX termios/SYSV termio speeds (where 9600 equals 9600) or an old DSD-style speed ( where 13 equals 9600). .IP TERM 2 .IX Item "TERM" The terminal type whose termcap entry will be used \- if not supplied it will default to \f(CW$ENV\fR{TERM}: if that is not set then \fBTgetent\fR will croak. .RE .RS 4 .Sp It calls \f(CW\*(C`croak\*(C'\fR on failure. .RE .IP \fBTpad\fR 4 .IX Item "Tpad" Outputs a literal string with appropriate padding for the current terminal. .Sp It takes three arguments: .RS 4 .ie n .IP \fR\fB$string\fR\fB\fR 2 .el .IP \fR\f(CB$string\fR\fB\fR 2 .IX Item "$string" The literal string to be output. If it starts with a number and an optional \&'*' then the padding will be increased by an amount relative to this number, if the '*' is present then this amount will be multiplied by \f(CW$cnt\fR. This part of \f(CW$string\fR is removed before output/ .ie n .IP \fR\fB$cnt\fR\fB\fR 2 .el .IP \fR\f(CB$cnt\fR\fB\fR 2 .IX Item "$cnt" Will be used to modify the padding applied to string as described above. .ie n .IP \fR\fB$FH\fR\fB\fR 2 .el .IP \fR\f(CB$FH\fR\fB\fR 2 .IX Item "$FH" An optional filehandle (or IO::Handle ) that output will be printed to. .RE .RS 4 .Sp The padded \f(CW$string\fR is returned. .RE .IP \fBTputs\fR 4 .IX Item "Tputs" Output the string for the given capability padded as appropriate without any parameter substitution. .Sp It takes three arguments: .RS 4 .ie n .IP \fR\fB$cap\fR\fB\fR 2 .el .IP \fR\f(CB$cap\fR\fB\fR 2 .IX Item "$cap" The capability whose string is to be output. .ie n .IP \fR\fB$cnt\fR\fB\fR 2 .el .IP \fR\f(CB$cnt\fR\fB\fR 2 .IX Item "$cnt" A count passed to Tpad to modify the padding applied to the output string. If \f(CW$cnt\fR is zero or one then the resulting string will be cached. .ie n .IP \fR\fB$FH\fR\fB\fR 2 .el .IP \fR\f(CB$FH\fR\fB\fR 2 .IX Item "$FH" An optional filehandle (or IO::Handle ) that output will be printed to. .RE .RS 4 .Sp The appropriate string for the capability will be returned. .RE .IP \fBTgoto\fR 4 .IX Item "Tgoto" \&\fBTgoto\fR decodes a cursor addressing string with the given parameters. .Sp There are four arguments: .RS 4 .ie n .IP \fR\fB$cap\fR\fB\fR 2 .el .IP \fR\f(CB$cap\fR\fB\fR 2 .IX Item "$cap" The name of the capability to be output. .ie n .IP \fR\fB$col\fR\fB\fR 2 .el .IP \fR\f(CB$col\fR\fB\fR 2 .IX Item "$col" The first value to be substituted in the output string ( usually the column in a cursor addressing capability ) .ie n .IP \fR\fB$row\fR\fB\fR 2 .el .IP \fR\f(CB$row\fR\fB\fR 2 .IX Item "$row" The second value to be substituted in the output string (usually the row in cursor addressing capabilities) .ie n .IP \fR\fB$FH\fR\fB\fR 2 .el .IP \fR\f(CB$FH\fR\fB\fR 2 .IX Item "$FH" An optional filehandle (or IO::Handle ) to which the output string will be printed. .RE .RS 4 .Sp Substitutions are made with \f(CW$col\fR and \f(CW$row\fR in the output string with the following \fBsprintf()\fR line formats: .Sp .Vb 6 \& %% output \`%\*(Aq \& %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) .Ve .Sp The output string will be returned. .RE .IP \fBTrequire\fR 4 .IX Item "Trequire" Takes a list of capabilities as an argument and will croak if one is not found. .SH EXAMPLES .IX Header "EXAMPLES" .Vb 1 \& use Term::Cap; \& \& # Get terminal output speed \& require POSIX; \& my $termios = POSIX::Termios\->new; \& $termios\->getattr; \& my $ospeed = $termios\->getospeed; \& \& # Old\-style ioctl code to get ospeed: \& # require \*(Aqioctl.pl\*(Aq; \& # ioctl(TTY,$TIOCGETP,$sgtty); \& # ($ispeed,$ospeed) = unpack(\*(Aqcc\*(Aq,$sgtty); \& \& # allocate and initialize a terminal structure \& my $terminal = Term::Cap\->Tgetent({ TERM => undef, OSPEED => $ospeed }); \& \& # require certain capabilities to be available \& $terminal\->Trequire(qw/ce ku kd/); \& \& # Output Routines, if $FH is undefined these just return the string \& \& # Tgoto does the % expansion stuff with the given args \& $terminal\->Tgoto(\*(Aqcm\*(Aq, $col, $row, $FH); \& \& # Tputs doesn\*(Aqt do any % expansion. \& $terminal\->Tputs(\*(Aqdl\*(Aq, $count = 1, $FH); .Ve .SH "COPYRIGHT AND LICENSE" .IX Header "COPYRIGHT AND LICENSE" Copyright 1995\-2015 (c) perl5 porters. .PP This software is free software and can be modified and distributed under the same terms as Perl itself. .PP Please see the file README in the Perl source distribution for details of the Perl license. .SH AUTHOR .IX Header "AUTHOR" This module is part of the core Perl distribution and is also maintained for CPAN by Jonathan Stowe <jns@gellyfish.co.uk>. .PP The code is hosted on Github: https://github.com/jonathanstowe/Term\-Cap please feel free to fork, submit patches etc, etc there. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBtermcap\fR\|(5)