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-rw-r--r--lib/Term/Cap.pm251
1 files changed, 182 insertions, 69 deletions
diff --git a/lib/Term/Cap.pm b/lib/Term/Cap.pm
index e1476a3411..061ca704b7 100644
--- a/lib/Term/Cap.pm
+++ b/lib/Term/Cap.pm
@@ -1,74 +1,138 @@
+# Term::Cap.pm -- Termcap interface routines
package Term::Cap;
-require 5.000;
-require Exporter;
-use Carp;
-@ISA = qw(Exporter);
-@EXPORT = qw(&Tgetent &Tputs &Tgoto $ispeed $ospeed %TC);
-
-# $RCSfile: termcap.pl,v $$Revision: 4.1 $$Date: 92/08/07 18:24:16 $
+# Converted to package on 25 Feb 1994 <sanders@bsdi.com>
#
# Usage:
# require 'ioctl.pl';
-# ioctl(TTY,$TIOCGETP,$foo);
-# ($ispeed,$ospeed) = unpack('cc',$foo);
-# use Termcap;
-# &Tgetent('vt100'); # sets $TC{'cm'}, etc.
-# &Tputs(&Tgoto($TC{'cm'},$col,$row), 0, 'FILEHANDLE');
-# &Tputs($TC{'dl'},$affcnt,'FILEHANDLE');
+# ioctl(TTY,$TIOCGETP,$sgtty);
+# ($ispeed,$ospeed) = unpack('cc',$sgtty);
+#
+# require Term::Cap;
+#
+# $term = Tgetent Term::Cap { TERM => undef, OSPEED => $ospeed };
+# sets $term->{'_cm'}, etc.
+# $this->Trequire(qw/ce ku kd/);
+# die unless entries are defined for the terminal
+# $term->Tgoto('cm', $col, $row, $FH);
+# $term->Tputs('dl', $cnt = 1, $FH);
+# $this->Tpad($string, $cnt = 1, $FH);
+# processes a termcap string and adds padding if needed
+# if $FH is undefined these just return the string
+#
+# CHANGES:
+# Converted to package
+# Allows :tc=...: in $ENV{'TERMCAP'} (flows to default termcap file)
+# Now die's properly if it can't open $TERMCAP or if the eval $loop fails
+# Tputs() results are cached (use Tgoto or Tpad to avoid)
+# Tgoto() will do output if $FH is passed (like Tputs without caching)
+# Supports POSIX termios speeds and old style speeds
+# Searches termcaps properly (TERMPATH, etc)
+# The output routines are optimized for cached Tputs().
+# $this->{_xx} is the raw termcap data and $this->{xx} is a
+# cached and padded string for count == 1.
#
-sub Tgetent {
- local($TERM) = @_;
- local($TERMCAP,$_,$entry,$loop,$field);
- warn "Tgetent: no ospeed set" unless $ospeed;
- foreach $key (keys(%TC)) {
- delete $TC{$key};
+# internal routines
+sub getenv { defined $ENV{$_[0]} ? $ENV{$_[0]} : ''; }
+sub termcap_path {
+ local @termcap_path = ('/etc/termcap', '/usr/share/misc/termcap');
+ local $v;
+ if ($v = getenv(TERMPATH)) {
+ # user specified path
+ @termcap_path = split(':', $v);
+ } else {
+ # default path
+ @termcap_path = ('/etc/termcap', '/usr/share/misc/termcap');
+ $v = getenv(HOME);
+ unshift(@termcap_path, $v . '/.termcap') if $v;
}
- $TERM = $ENV{'TERM'} unless $TERM;
- $TERM =~ s/(\W)/\\$1/g;
- $TERMCAP = $ENV{'TERMCAP'};
- $TERMCAP = '/etc/termcap' unless $TERMCAP;
- if ($TERMCAP !~ m:^/:) {
- if ($TERMCAP !~ /(^|\|)$TERM[:\|]/) {
- $TERMCAP = '/etc/termcap';
- }
- }
- if ($TERMCAP =~ m:^/:) {
- $entry = '';
+ # we always search TERMCAP first
+ $v = getenv(TERMCAP);
+ unshift(@termcap_path, $v) if $v =~ /^\//;
+ grep(-f, @termcap_path);
+}
+
+sub Tgetent {
+ local($type) = shift;
+ local($this) = @_;
+ local($TERM,$TERMCAP,$term,$entry,$cap,$loop,$field,$entry,$_);
+
+ warn "Tgetent: no ospeed set\n" unless $this->{OSPEED} > 0;
+ $this->{DECR} = 10000 / $this->{OSPEED} if $this->{OSPEED} > 50;
+ $term = $TERM = $this->{TERM} =
+ $this->{TERM} || getenv(TERM) || die "Tgetent: TERM not set\n";
+
+ $TERMCAP = getenv(TERMCAP);
+ $TERMCAP = '' if $TERMCAP =~ m:^/: || $TERMCAP !~ /(^|\|)$TERM[:\|]/;
+ local @termcap_path = &termcap_path;
+ die "Tgetent: Can't find a valid termcap file\n"
+ unless @termcap_path || $TERMCAP;
+
+ # handle environment TERMCAP, setup for continuation if needed
+ $entry = $TERMCAP;
+ $entry =~ s/:tc=([^:]+):/:/ && ($TERM = $1);
+ if ($TERMCAP eq '' || $1) { # the search goes on
+ local $first = $TERMCAP eq '' ? 1 : 0; # make it pretty
+ local $max = 32; # max :tc=...:'s
+ local $state = 1; # 0 == finished
+ # 1 == next file
+ # 2 == search again
do {
+ if ($state == 1) {
+ $TERMCAP = shift @termcap_path
+ || die "Tgetent: failed lookup on $TERM\n";
+ } else {
+ $max-- || die "Tgetent: termcap loop at $TERM\n";
+ $state = 1; # back to default state
+ }
+
+ open(TERMCAP,"< $TERMCAP\0") || die "Tgetent: $TERMCAP: $!\n";
+ # print STDERR "Trying... $TERMCAP\n";
$loop = "
- open(TERMCAP,'<$TERMCAP') || croak \"Can't open $TERMCAP\";
- while (<TERMCAP>) {
- next if /^#/;
- next if /^\t/;
- if (/(^|\\|)${TERM}[:\\|]/) {
- chop;
- while (chop eq '\\\\') {
- \$_ .= <TERMCAP>;
+ while (<TERMCAP>) {
+ next if /^\t/;
+ next if /^#/;
+ if (/(^|\\|)${TERM}[:\\|]/) {
chop;
+ s/^[^:]*:// unless \$first++;
+ \$state = 0;
+ while (chop eq '\\\\') {
+ \$_ .= <TERMCAP>;
+ chop;
+ }
+ \$_ .= ':';
+ last;
}
- \$_ .= ':';
- last;
}
- }
- close TERMCAP;
- \$entry .= \$_;
+ \$entry .= \$_;
";
eval $loop;
- } while s/:tc=([^:]+):/:/ && ($TERM = $1);
- $TERMCAP = $entry;
+ die $@ if $@;
+ #print STDERR "$TERM: $_\n--------\n"; # DEBUG
+ close TERMCAP;
+ # If :tc=...: found then search this file again
+ $entry =~ s/:tc=([^:]+):/:/ && ($TERM = $1, $state = 2);
+ } while $state != 0;
}
+ die "Tgetent: Can't find $term\n" unless $entry ne '';
+ $entry =~ s/:\s+:/:/g;
+ $this->{TERMCAP} = $entry;
+ #print STDERR $entry, "\n"; # DEBUG
- foreach $field (split(/:[\s:\\]*/,$TERMCAP)) {
+ # Precompile $entry into the object
+ foreach $field (split(/:[\s:\\]*/,$entry)) {
if ($field =~ /^\w\w$/) {
- $TC{$field} = 1;
+ $this->{'_' . $field} = 1 unless defined $this->{'_' . $1};
+ }
+ elsif ($field =~ /^(\w\w)\@/) {
+ $this->{'_' . $1} = "";
}
elsif ($field =~ /^(\w\w)#(.*)/) {
- $TC{$1} = $2 unless defined $TC{$1};
+ $this->{'_' . $1} = $2 unless defined $this->{'_' . $1};
}
elsif ($field =~ /^(\w\w)=(.*)/) {
- $entry = $1;
+ next if defined $this->{'_' . ($cap = $1)};
$_ = $2;
s/\\E/\033/g;
s/\\(\d\d\d)/pack('c',oct($1) & 0177)/eg;
@@ -82,40 +146,77 @@ sub Tgetent {
s/\^(.)/pack('c',ord($1) & 31)/eg;
s/\\(.)/$1/g;
s/\377/^/g;
- $TC{$entry} = $_ unless defined $TC{$entry};
+ $this->{'_' . $cap} = $_;
}
+ # else { warn "Tgetent: junk in $term: $field\n"; }
}
- $TC{'pc'} = "\0" unless defined $TC{'pc'};
- $TC{'bc'} = "\b" unless defined $TC{'bc'};
+ $this->{'_pc'} = "\0" unless defined $this->{'_pc'};
+ $this->{'_bc'} = "\b" unless defined $this->{'_bc'};
+ $this;
}
-@Tputs = (0,200,133.3,90.9,74.3,66.7,50,33.3,16.7,8.3,5.5,4.1,2,1,.5,.2);
+# delays for old style speeds
+@Tpad = (0,200,133.3,90.9,74.3,66.7,50,33.3,16.7,8.3,5.5,4.1,2,1,.5,.2);
+
+# $term->Tpad($string, $cnt, $FH);
+sub Tpad {
+ local($this, $string, $cnt, $FH) = @_;
+ local($decr, $ms);
-sub Tputs {
- local($string,$affcnt,$FH) = @_;
- local($ms);
if ($string =~ /(^[\d.]+)(\*?)(.*)$/) {
$ms = $1;
- $ms *= $affcnt if $2;
+ $ms *= $cnt if $2;
$string = $3;
- $decr = $Tputs[$ospeed];
+ $decr = $this->{OSPEED} < 50 ? $Tpad[$this->{OSPEED}] : $this->{DECR};
if ($decr > .1) {
$ms += $decr / 2;
- $string .= $TC{'pc'} x ($ms / $decr);
+ $string .= $this->{'_pc'} x ($ms / $decr);
}
}
print $FH $string if $FH;
$string;
}
+# $term->Tputs($cap, $cnt, $FH);
+sub Tputs {
+ local($this, $cap, $cnt, $FH) = @_;
+ local $string;
+
+ if ($cnt > 1) {
+ $string = Tpad($this, $this->{'_' . $cap}, $cnt);
+ } else {
+ $string = defined $this->{$cap} ? $this->{$cap} :
+ ($this->{$cap} = Tpad($this, $this->{'_' . $cap}, 1));
+ }
+ print $FH $string if $FH;
+ $string;
+}
+
+# %% 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)
+#
+# $term->Tgoto($cap, $col, $row, $FH);
sub Tgoto {
- local($string) = shift(@_);
- local($result) = '';
- local($after) = '';
- local($code,$tmp) = @_;
- local(@tmp);
- @tmp = ($tmp,$code);
- local($online) = 0;
+ local($this, $cap, $code, $tmp, $FH) = @_;
+ local $string = $this->{'_' . $cap};
+ local $result = '';
+ local $after = '';
+ local $online = 0;
+ local @tmp = ($tmp,$code);
+ local $cnt = $code;
+
while ($string =~ /^([^%]*)%(.)(.*)/) {
$result .= $1;
$code = $2;
@@ -127,10 +228,10 @@ sub Tgoto {
$tmp = shift(@tmp);
if ($tmp == 0 || $tmp == 4 || $tmp == 10) {
if ($online) {
- ++$tmp, $after .= $TC{'up'} if $TC{'up'};
+ ++$tmp, $after .= $this->{'_up'} if $this->{'_up'};
}
else {
- ++$tmp, $after .= $TC{'bc'};
+ ++$tmp, $after .= $this->{'_bc'};
}
}
$result .= sprintf("%c",$tmp);
@@ -168,7 +269,19 @@ sub Tgoto {
return "OOPS";
}
}
- $result . $string . $after;
+ $string = Tpad($this, $result . $string . $after, $cnt);
+ print $FH $string if $FH;
+ $string;
+}
+
+# $this->Trequire($cap1, $cap2, ...);
+sub Trequire {
+ local $this = shift;
+ local $_;
+ foreach (@_) {
+ die "Trequire: Terminal does not support: $_\n"
+ unless defined $this->{'_' . $_} && $this->{'_' . $_};
+ }
}
1;
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