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1 | package Term::Cap; |
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2 | |
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3 | use Carp; |
7cae2445 |
4 | use strict; |
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5 | |
d2492938 |
6 | use vars qw($VERSION $VMS_TERMCAP); |
7cae2445 |
7 | use vars qw($termpat $state $first $entry); |
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8 | |
8bb18277 |
9 | $VERSION = '1.07'; |
b75c8c73 |
10 | |
e14c93b3 |
11 | # Version undef: Thu Dec 14 20:02:42 CST 1995 by sanders@bsdi.com |
12 | # Version 1.00: Thu Nov 30 23:34:29 EST 2000 by schwern@pobox.com |
13 | # [PATCH] $VERSION crusade, strict, tests, etc... all over lib/ |
14 | # Version 1.01: Wed May 23 00:00:00 CST 2001 by d-lewart@uiuc.edu |
15 | # Avoid warnings in Tgetent and Tputs |
2ef86165 |
16 | # Version 1.02: Sat Nov 17 13:50:39 GMT 2001 by jns@gellyfish.com |
17 | # Altered layout of the POD |
18 | # Added Test::More to PREREQ_PM in Makefile.PL |
19 | # Fixed no argument Tgetent() |
2ab0daaa |
20 | # Version 1.03: Wed Nov 28 10:09:38 GMT 2001 |
21 | # VMS Support from Charles Lane <lane@DUPHY4.Physics.Drexel.Edu> |
2608af5d |
22 | # Version 1.04: Thu Nov 29 16:22:03 GMT 2001 |
23 | # Fixed warnings in test |
7cae2445 |
24 | # Version 1.05: Mon Dec 3 15:33:49 GMT 2001 |
25 | # Don't try to fall back on infocmp if it's not there. From chromatic. |
d2492938 |
26 | # Version 1.06: Thu Dec 6 18:43:22 GMT 2001 |
27 | # Preload the default VMS termcap from Charles Lane |
28 | # Don't carp at setting OSPEED unless warnings are on. |
8bb18277 |
29 | # Version 1.07: Wed Jan 2 21:35:09 GMT 2002 |
30 | # Sanity check on infocmp output from Norton Allen |
31 | # Repaired INSTALLDIRS thanks to Michael Schwern |
a687059c |
32 | |
cb1a09d0 |
33 | # TODO: |
34 | # support Berkeley DB termcaps |
35 | # should probably be a .xs module |
36 | # force $FH into callers package? |
37 | # keep $FH in object at Tgetent time? |
38 | |
39 | =head1 NAME |
40 | |
41 | Term::Cap - Perl termcap interface |
42 | |
43 | =head1 SYNOPSIS |
44 | |
45 | require Term::Cap; |
46 | $terminal = Tgetent Term::Cap { TERM => undef, OSPEED => $ospeed }; |
47 | $terminal->Trequire(qw/ce ku kd/); |
48 | $terminal->Tgoto('cm', $col, $row, $FH); |
49 | $terminal->Tputs('dl', $count, $FH); |
50 | $terminal->Tpad($string, $count, $FH); |
51 | |
52 | =head1 DESCRIPTION |
53 | |
54 | These are low-level functions to extract and use capabilities from |
55 | a terminal capability (termcap) database. |
56 | |
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57 | More information on the terminal capabilities will be found in the |
58 | termcap manpage on most Unix-like systems. |
cb1a09d0 |
59 | |
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60 | =head2 METHODS |
cb1a09d0 |
61 | |
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62 | =over 4 |
cb1a09d0 |
63 | |
64 | The output strings for B<Tputs> are cached for counts of 1 for performance. |
65 | B<Tgoto> and B<Tpad> do not cache. C<$self-E<gt>{_xx}> is the raw termcap |
66 | data and C<$self-E<gt>{xx}> is the cached version. |
67 | |
68 | print $terminal->Tpad($self->{_xx}, 1); |
69 | |
70 | B<Tgoto>, B<Tputs>, and B<Tpad> return the string and will also |
71 | output the string to $FH if specified. |
72 | |
cb1a09d0 |
73 | |
74 | =cut |
75 | |
d2492938 |
76 | # Preload the default VMS termcap. |
77 | # If a different termcap is required then the text of one can be supplied |
78 | # in $Term::Cap::VMS_TERMCAP before Tgetent is called. |
79 | |
80 | if ( $^O eq 'VMS') { |
81 | chomp (my @entry = <DATA>); |
82 | $VMS_TERMCAP = join '', @entry; |
83 | } |
84 | |
cb1a09d0 |
85 | # Returns a list of termcap files to check. |
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86 | |
cb1a09d0 |
87 | sub termcap_path { ## private |
88 | my @termcap_path; |
89 | # $TERMCAP, if it's a filespec |
7a2e2cd6 |
90 | push(@termcap_path, $ENV{TERMCAP}) |
91 | if ((exists $ENV{TERMCAP}) && |
39e571d4 |
92 | (($^O eq 'os2' || $^O eq 'MSWin32' || $^O eq 'dos') |
fe6f1558 |
93 | ? $ENV{TERMCAP} =~ /^[a-z]:[\\\/]/is |
94 | : $ENV{TERMCAP} =~ /^\//s)); |
c07a80fd |
95 | if ((exists $ENV{TERMPATH}) && ($ENV{TERMPATH})) { |
cb1a09d0 |
96 | # Add the users $TERMPATH |
97 | push(@termcap_path, split(/(:|\s+)/, $ENV{TERMPATH})) |
98 | } |
99 | else { |
100 | # Defaults |
101 | push(@termcap_path, |
102 | $ENV{'HOME'} . '/.termcap', |
103 | '/etc/termcap', |
104 | '/usr/share/misc/termcap', |
105 | ); |
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106 | } |
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107 | |
cb1a09d0 |
108 | # return the list of those termcaps that exist |
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109 | return grep(-f, @termcap_path); |
748a9306 |
110 | } |
111 | |
2ef86165 |
112 | =item B<Tgetent> |
113 | |
114 | Returns a blessed object reference which the user can |
115 | then use to send the control strings to the terminal using B<Tputs> |
116 | and B<Tgoto>. |
117 | |
118 | The function extracts the entry of the specified terminal |
119 | type I<TERM> (defaults to the environment variable I<TERM>) from the |
120 | database. |
121 | |
122 | It will look in the environment for a I<TERMCAP> variable. If |
123 | found, and the value does not begin with a slash, and the terminal |
124 | type name is the same as the environment string I<TERM>, the |
125 | I<TERMCAP> string is used instead of reading a termcap file. If |
126 | it does begin with a slash, the string is used as a path name of |
127 | the termcap file to search. If I<TERMCAP> does not begin with a |
128 | slash and name is different from I<TERM>, B<Tgetent> searches the |
129 | files F<$HOME/.termcap>, F</etc/termcap>, and F</usr/share/misc/termcap>, |
130 | in that order, unless the environment variable I<TERMPATH> exists, |
131 | in which case it specifies a list of file pathnames (separated by |
132 | spaces or colons) to be searched B<instead>. Whenever multiple |
133 | files are searched and a tc field occurs in the requested entry, |
134 | the entry it names must be found in the same file or one of the |
135 | succeeding files. If there is a C<:tc=...:> in the I<TERMCAP> |
136 | environment variable string it will continue the search in the |
137 | files as above. |
138 | |
139 | The extracted termcap entry is available in the object |
140 | as C<$self-E<gt>{TERMCAP}>. |
141 | |
142 | It takes a hash reference as an argument with two optional keys: |
143 | |
144 | =over 2 |
145 | |
146 | =item OSPEED |
147 | |
148 | The terminal output bit rate (often mistakenly called the baud rate) |
149 | for this terminal - if not set a warning will be generated |
150 | and it will be defaulted to 9600. I<OSPEED> can be be specified as |
151 | either a POSIX termios/SYSV termio speeds (where 9600 equals 9600) or |
152 | an old DSD-style speed ( where 13 equals 9600). |
153 | |
154 | |
155 | =item TERM |
156 | |
157 | The terminal type whose termcap entry will be used - if not supplied it will |
158 | default to $ENV{TERM}: if that is not set then B<Tgetent> will croak. |
159 | |
160 | =back |
161 | |
162 | It calls C<croak> on failure. |
163 | |
164 | =cut |
165 | |
cb1a09d0 |
166 | sub Tgetent { ## public -- static method |
167 | my $class = shift; |
2ef86165 |
168 | my ($self) = @_; |
169 | |
170 | $self = {} unless defined $self; |
171 | bless $self, $class; |
172 | |
cb1a09d0 |
173 | my($term,$cap,$search,$field,$max,$tmp_term,$TERMCAP); |
174 | local($termpat,$state,$first,$entry); # used inside eval |
175 | local $_; |
176 | |
177 | # Compute PADDING factor from OSPEED (to be used by Tpad) |
178 | if (! $self->{OSPEED}) { |
d2492938 |
179 | if ( $^W ) { |
180 | carp "OSPEED was not set, defaulting to 9600"; |
181 | } |
cb1a09d0 |
182 | $self->{OSPEED} = 9600; |
183 | } |
184 | if ($self->{OSPEED} < 16) { |
185 | # delays for old style speeds |
186 | my @pad = (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); |
187 | $self->{PADDING} = $pad[$self->{OSPEED}]; |
188 | } |
189 | else { |
190 | $self->{PADDING} = 10000 / $self->{OSPEED}; |
191 | } |
192 | |
193 | $self->{TERM} = ($self->{TERM} || $ENV{TERM} || croak "TERM not set"); |
194 | $term = $self->{TERM}; # $term is the term type we are looking for |
195 | |
196 | # $tmp_term is always the next term (possibly :tc=...:) we are looking for |
197 | $tmp_term = $self->{TERM}; |
198 | # protect any pattern metacharacters in $tmp_term |
199 | $termpat = $tmp_term; $termpat =~ s/(\W)/\\$1/g; |
200 | |
c07a80fd |
201 | my $foo = (exists $ENV{TERMCAP} ? $ENV{TERMCAP} : ''); |
cb1a09d0 |
202 | |
203 | # $entry is the extracted termcap entry |
fe6f1558 |
204 | if (($foo !~ m:^/:s) && ($foo =~ m/(^|\|)${termpat}[:|]/s)) { |
cb1a09d0 |
205 | $entry = $foo; |
206 | } |
207 | |
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208 | my @termcap_path = termcap_path(); |
e66fb0c2 |
209 | |
210 | unless (@termcap_path || $entry) |
211 | { |
212 | # last resort--fake up a termcap from terminfo |
213 | local $ENV{TERM} = $term; |
2ab0daaa |
214 | |
7cae2445 |
215 | if ( $^O eq 'VMS' ) { |
d2492938 |
216 | $entry = $VMS_TERMCAP; |
7cae2445 |
217 | } |
218 | else { |
8bb18277 |
219 | if ( grep { -x "$_/infocmp" } split /:/, $ENV{PATH} ) { |
220 | eval |
221 | { |
222 | my $tmp = `infocmp -C 2>/dev/null`; |
223 | |
224 | if (( $tmp !~ m%^/%s ) && ( $tmp =~ /(^|\|)${termpat}[:|]/s)) { |
225 | $entry = $tmp; |
226 | } |
227 | }; |
7cae2445 |
228 | } |
229 | } |
2f6e8d9f |
230 | } |
e66fb0c2 |
231 | |
cb1a09d0 |
232 | croak "Can't find a valid termcap file" unless @termcap_path || $entry; |
233 | |
234 | $state = 1; # 0 == finished |
235 | # 1 == next file |
236 | # 2 == search again |
237 | |
238 | $first = 0; # first entry (keeps term name) |
239 | |
240 | $max = 32; # max :tc=...:'s |
241 | |
242 | if ($entry) { |
243 | # ok, we're starting with $TERMCAP |
244 | $first++; # we're the first entry |
245 | # do we need to continue? |
246 | if ($entry =~ s/:tc=([^:]+):/:/) { |
247 | $tmp_term = $1; |
248 | # protect any pattern metacharacters in $tmp_term |
249 | $termpat = $tmp_term; $termpat =~ s/(\W)/\\$1/g; |
250 | } |
251 | else { |
252 | $state = 0; # we're already finished |
253 | } |
254 | } |
255 | |
256 | # This is eval'ed inside the while loop for each file |
257 | $search = q{ |
54310121 |
258 | while (<TERMCAP>) { |
cb1a09d0 |
259 | next if /^\\t/ || /^#/; |
260 | if ($_ =~ m/(^|\\|)${termpat}[:|]/o) { |
261 | chomp; |
262 | s/^[^:]*:// if $first++; |
263 | $state = 0; |
54310121 |
264 | while ($_ =~ s/\\\\$//) { |
265 | defined(my $x = <TERMCAP>) or last; |
266 | $_ .= $x; chomp; |
267 | } |
cb1a09d0 |
268 | last; |
748a9306 |
269 | } |
cb1a09d0 |
270 | } |
55497cff |
271 | defined $entry or $entry = ''; |
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272 | $entry .= $_ if $_; |
cb1a09d0 |
273 | }; |
748a9306 |
274 | |
cb1a09d0 |
275 | while ($state != 0) { |
276 | if ($state == 1) { |
277 | # get the next TERMCAP |
278 | $TERMCAP = shift @termcap_path |
279 | || croak "failed termcap lookup on $tmp_term"; |
280 | } |
281 | else { |
282 | # do the same file again |
283 | # prevent endless recursion |
284 | $max-- || croak "failed termcap loop at $tmp_term"; |
285 | $state = 1; # ok, maybe do a new file next time |
286 | } |
287 | |
288 | open(TERMCAP,"< $TERMCAP\0") || croak "open $TERMCAP: $!"; |
289 | eval $search; |
290 | die $@ if $@; |
291 | close TERMCAP; |
292 | |
293 | # If :tc=...: found then search this file again |
294 | $entry =~ s/:tc=([^:]+):/:/ && ($tmp_term = $1, $state = 2); |
295 | # protect any pattern metacharacters in $tmp_term |
296 | $termpat = $tmp_term; $termpat =~ s/(\W)/\\$1/g; |
a687059c |
297 | } |
cb1a09d0 |
298 | |
299 | croak "Can't find $term" if $entry eq ''; |
300 | $entry =~ s/:+\s*:+/:/g; # cleanup $entry |
301 | $entry =~ s/:+/:/g; # cleanup $entry |
302 | $self->{TERMCAP} = $entry; # save it |
303 | # print STDERR "DEBUG: $entry = ", $entry, "\n"; |
a687059c |
304 | |
748a9306 |
305 | # Precompile $entry into the object |
cb1a09d0 |
306 | $entry =~ s/^[^:]*://; |
748a9306 |
307 | foreach $field (split(/:[\s:\\]*/,$entry)) { |
2608af5d |
308 | if (defined $field && $field =~ /^(\w\w)$/) { |
cb1a09d0 |
309 | $self->{'_' . $field} = 1 unless defined $self->{'_' . $1}; |
310 | # print STDERR "DEBUG: flag $1\n"; |
748a9306 |
311 | } |
2608af5d |
312 | elsif (defined $field && $field =~ /^(\w\w)\@/) { |
cb1a09d0 |
313 | $self->{'_' . $1} = ""; |
314 | # print STDERR "DEBUG: unset $1\n"; |
a687059c |
315 | } |
2608af5d |
316 | elsif (defined $field && $field =~ /^(\w\w)#(.*)/) { |
cb1a09d0 |
317 | $self->{'_' . $1} = $2 unless defined $self->{'_' . $1}; |
318 | # print STDERR "DEBUG: numeric $1 = $2\n"; |
a687059c |
319 | } |
2608af5d |
320 | elsif (defined $field && $field =~ /^(\w\w)=(.*)/) { |
cb1a09d0 |
321 | # print STDERR "DEBUG: string $1 = $2\n"; |
322 | next if defined $self->{'_' . ($cap = $1)}; |
a687059c |
323 | $_ = $2; |
324 | s/\\E/\033/g; |
ecfc5424 |
325 | s/\\(\d\d\d)/pack('c',oct($1) & 0177)/eg; |
a687059c |
326 | s/\\n/\n/g; |
327 | s/\\r/\r/g; |
328 | s/\\t/\t/g; |
329 | s/\\b/\b/g; |
330 | s/\\f/\f/g; |
331 | s/\\\^/\377/g; |
332 | s/\^\?/\177/g; |
63f2c1e1 |
333 | s/\^(.)/pack('c',ord($1) & 31)/eg; |
a687059c |
334 | s/\\(.)/$1/g; |
335 | s/\377/^/g; |
cb1a09d0 |
336 | $self->{'_' . $cap} = $_; |
a687059c |
337 | } |
cb1a09d0 |
338 | # else { carp "junk in $term ignored: $field"; } |
a687059c |
339 | } |
cb1a09d0 |
340 | $self->{'_pc'} = "\0" unless defined $self->{'_pc'}; |
341 | $self->{'_bc'} = "\b" unless defined $self->{'_bc'}; |
342 | $self; |
a687059c |
343 | } |
344 | |
cb1a09d0 |
345 | # $terminal->Tpad($string, $cnt, $FH); |
2ef86165 |
346 | |
347 | =item B<Tpad> |
348 | |
349 | Outputs a literal string with appropriate padding for the current terminal. |
350 | |
351 | It takes three arguments: |
352 | |
353 | =over 2 |
354 | |
355 | =item B<$string> |
356 | |
357 | The literal string to be output. If it starts with a number and an optional |
358 | '*' then the padding will be increased by an amount relative to this number, |
359 | if the '*' is present then this amount will me multiplied by $cnt. This part |
360 | of $string is removed before output/ |
361 | |
362 | =item B<$cnt> |
363 | |
364 | Will be used to modify the padding applied to string as described above. |
365 | |
366 | =item B<$FH> |
367 | |
368 | An optional filehandle (or IO::Handle ) that output will be printed to. |
369 | |
370 | =back |
371 | |
372 | The padded $string is returned. |
373 | |
374 | =cut |
375 | |
cb1a09d0 |
376 | sub Tpad { ## public |
377 | my $self = shift; |
378 | my($string, $cnt, $FH) = @_; |
379 | my($decr, $ms); |
a687059c |
380 | |
2608af5d |
381 | if (defined $string && $string =~ /(^[\d.]+)(\*?)(.*)$/) { |
a687059c |
382 | $ms = $1; |
748a9306 |
383 | $ms *= $cnt if $2; |
a687059c |
384 | $string = $3; |
cb1a09d0 |
385 | $decr = $self->{PADDING}; |
a687059c |
386 | if ($decr > .1) { |
387 | $ms += $decr / 2; |
cb1a09d0 |
388 | $string .= $self->{'_pc'} x ($ms / $decr); |
a687059c |
389 | } |
390 | } |
391 | print $FH $string if $FH; |
392 | $string; |
393 | } |
394 | |
cb1a09d0 |
395 | # $terminal->Tputs($cap, $cnt, $FH); |
2ef86165 |
396 | |
397 | =item B<Tputs> |
398 | |
399 | Output the string for the given capability padded as appropriate without |
400 | any parameter substitution. |
401 | |
402 | It takes three arguments: |
403 | |
404 | =over 2 |
405 | |
406 | =item B<$cap> |
407 | |
408 | The capability whose string is to be output. |
409 | |
410 | =item B<$cnt> |
411 | |
412 | A count passed to Tpad to modify the padding applied to the output string. |
413 | If $cnt is zero or one then the resulting string will be cached. |
414 | |
415 | =item B<$FH> |
416 | |
417 | An optional filehandle (or IO::Handle ) that output will be printed to. |
418 | |
419 | =back |
420 | |
421 | The appropriate string for the capability will be returned. |
422 | |
423 | =cut |
424 | |
cb1a09d0 |
425 | sub Tputs { ## public |
426 | my $self = shift; |
427 | my($cap, $cnt, $FH) = @_; |
428 | my $string; |
748a9306 |
429 | |
2ef86165 |
430 | $cnt = 0 unless $cnt; |
431 | |
748a9306 |
432 | if ($cnt > 1) { |
cb1a09d0 |
433 | $string = Tpad($self, $self->{'_' . $cap}, $cnt); |
748a9306 |
434 | } else { |
cb1a09d0 |
435 | # cache result because Tpad can be slow |
e14c93b3 |
436 | unless (exists $self->{$cap}) { |
437 | $self->{$cap} = exists $self->{"_$cap"} ? |
438 | Tpad($self, $self->{"_$cap"}, 1) : undef; |
439 | } |
440 | $string = $self->{$cap}; |
748a9306 |
441 | } |
442 | print $FH $string if $FH; |
443 | $string; |
444 | } |
445 | |
cb1a09d0 |
446 | # $terminal->Tgoto($cap, $col, $row, $FH); |
2ef86165 |
447 | |
448 | =item B<Tgoto> |
449 | |
450 | B<Tgoto> decodes a cursor addressing string with the given parameters. |
451 | |
452 | There are four arguments: |
453 | |
454 | =over 2 |
455 | |
456 | =item B<$cap> |
457 | |
458 | The name of the capability to be output. |
459 | |
460 | =item B<$col> |
461 | |
462 | The first value to be substituted in the output string ( usually the column |
463 | in a cursor addressing capability ) |
464 | |
465 | =item B<$row> |
466 | |
467 | The second value to be substituted in the output string (usually the row |
468 | in cursor addressing capabilities) |
469 | |
470 | =item B<$FH> |
471 | |
472 | An optional filehandle (or IO::Handle ) to which the output string will be |
473 | printed. |
474 | |
475 | =back |
476 | |
477 | Substitutions are made with $col and $row in the output string with the |
478 | following sprintf() line formats: |
479 | |
480 | %% output `%' |
481 | %d output value as in printf %d |
482 | %2 output value as in printf %2d |
483 | %3 output value as in printf %3d |
484 | %. output value as in printf %c |
485 | %+x add x to value, then do %. |
486 | |
487 | %>xy if value > x then add y, no output |
488 | %r reverse order of two parameters, no output |
489 | %i increment by one, no output |
490 | %B BCD (16*(value/10)) + (value%10), no output |
491 | |
492 | %n exclusive-or all parameters with 0140 (Datamedia 2500) |
493 | %D Reverse coding (value - 2*(value%16)), no output (Delta Data) |
494 | |
495 | The output string will be returned. |
496 | |
497 | =cut |
498 | |
cb1a09d0 |
499 | sub Tgoto { ## public |
500 | my $self = shift; |
501 | my($cap, $code, $tmp, $FH) = @_; |
502 | my $string = $self->{'_' . $cap}; |
503 | my $result = ''; |
504 | my $after = ''; |
505 | my $online = 0; |
506 | my @tmp = ($tmp,$code); |
507 | my $cnt = $code; |
748a9306 |
508 | |
a687059c |
509 | while ($string =~ /^([^%]*)%(.)(.*)/) { |
510 | $result .= $1; |
511 | $code = $2; |
512 | $string = $3; |
513 | if ($code eq 'd') { |
9f68db38 |
514 | $result .= sprintf("%d",shift(@tmp)); |
a687059c |
515 | } |
516 | elsif ($code eq '.') { |
9f68db38 |
517 | $tmp = shift(@tmp); |
a687059c |
518 | if ($tmp == 0 || $tmp == 4 || $tmp == 10) { |
519 | if ($online) { |
cb1a09d0 |
520 | ++$tmp, $after .= $self->{'_up'} if $self->{'_up'}; |
a687059c |
521 | } |
522 | else { |
cb1a09d0 |
523 | ++$tmp, $after .= $self->{'_bc'}; |
a687059c |
524 | } |
525 | } |
526 | $result .= sprintf("%c",$tmp); |
527 | $online = !$online; |
528 | } |
529 | elsif ($code eq '+') { |
9f68db38 |
530 | $result .= sprintf("%c",shift(@tmp)+ord($string)); |
a687059c |
531 | $string = substr($string,1,99); |
532 | $online = !$online; |
533 | } |
534 | elsif ($code eq 'r') { |
9f68db38 |
535 | ($code,$tmp) = @tmp; |
536 | @tmp = ($tmp,$code); |
a687059c |
537 | $online = !$online; |
538 | } |
539 | elsif ($code eq '>') { |
540 | ($code,$tmp,$string) = unpack("CCa99",$string); |
9f68db38 |
541 | if ($tmp[$[] > $code) { |
542 | $tmp[$[] += $tmp; |
a687059c |
543 | } |
544 | } |
545 | elsif ($code eq '2') { |
9f68db38 |
546 | $result .= sprintf("%02d",shift(@tmp)); |
a687059c |
547 | $online = !$online; |
548 | } |
549 | elsif ($code eq '3') { |
9f68db38 |
550 | $result .= sprintf("%03d",shift(@tmp)); |
a687059c |
551 | $online = !$online; |
552 | } |
553 | elsif ($code eq 'i') { |
9f68db38 |
554 | ($code,$tmp) = @tmp; |
555 | @tmp = ($code+1,$tmp+1); |
a687059c |
556 | } |
557 | else { |
558 | return "OOPS"; |
559 | } |
560 | } |
cb1a09d0 |
561 | $string = Tpad($self, $result . $string . $after, $cnt); |
748a9306 |
562 | print $FH $string if $FH; |
563 | $string; |
564 | } |
565 | |
cb1a09d0 |
566 | # $terminal->Trequire(qw/ce ku kd/); |
2ef86165 |
567 | |
568 | =item B<Trequire> |
569 | |
570 | Takes a list of capabilities as an argument and will croak if one is not |
571 | found. |
572 | |
573 | =cut |
574 | |
cb1a09d0 |
575 | sub Trequire { ## public |
576 | my $self = shift; |
577 | my($cap,@undefined); |
578 | foreach $cap (@_) { |
579 | push(@undefined, $cap) |
580 | unless defined $self->{'_' . $cap} && $self->{'_' . $cap}; |
748a9306 |
581 | } |
cb1a09d0 |
582 | croak "Terminal does not support: (@undefined)" if @undefined; |
a687059c |
583 | } |
584 | |
2ef86165 |
585 | =back |
586 | |
587 | =head1 EXAMPLES |
588 | |
589 | use Term::Cap; |
590 | |
591 | # Get terminal output speed |
592 | require POSIX; |
593 | my $termios = new POSIX::Termios; |
594 | $termios->getattr; |
595 | my $ospeed = $termios->getospeed; |
596 | |
597 | # Old-style ioctl code to get ospeed: |
598 | # require 'ioctl.pl'; |
599 | # ioctl(TTY,$TIOCGETP,$sgtty); |
600 | # ($ispeed,$ospeed) = unpack('cc',$sgtty); |
601 | |
602 | # allocate and initialize a terminal structure |
603 | $terminal = Tgetent Term::Cap { TERM => undef, OSPEED => $ospeed }; |
604 | |
605 | # require certain capabilities to be available |
606 | $terminal->Trequire(qw/ce ku kd/); |
607 | |
608 | # Output Routines, if $FH is undefined these just return the string |
cb1a09d0 |
609 | |
2ef86165 |
610 | # Tgoto does the % expansion stuff with the given args |
611 | $terminal->Tgoto('cm', $col, $row, $FH); |
612 | |
613 | # Tputs doesn't do any % expansion. |
614 | $terminal->Tputs('dl', $count = 1, $FH); |
615 | |
616 | =head1 COPYRIGHT AND LICENSE |
617 | |
618 | Please see the README file in distribution. |
619 | |
620 | =head1 AUTHOR |
621 | |
622 | This module is part of the core Perl distribution and is also maintained |
623 | for CPAN by Jonathan Stowe <jns@gellyfish.com>. |
624 | |
625 | =head1 SEE ALSO |
626 | |
627 | termcap(5) |
628 | |
629 | =cut |
2ab0daaa |
630 | |
631 | # Below is a default entry for systems where there are terminals but no |
632 | # termcap |
633 | 1; |
a69e7784 |
634 | __DATA__ |
2ab0daaa |
635 | vt220|vt200|DEC VT220 in vt100 emulation mode: |
636 | am:mi:xn:xo: |
637 | co#80:li#24: |
638 | RA=\E[?7l:SA=\E[?7h: |
639 | ac=kkllmmjjnnwwqquuttvvxx:ae=\E(B:al=\E[L:as=\E(0: |
640 | bl=^G:cd=\E[J:ce=\E[K:cl=\E[H\E[2J:cm=\E[%i%d;%dH: |
641 | cr=^M:cs=\E[%i%d;%dr:dc=\E[P:dl=\E[M:do=\E[B: |
642 | ei=\E[4l:ho=\E[H:im=\E[4h: |
643 | is=\E[1;24r\E[24;1H: |
644 | nd=\E[C: |
645 | kd=\E[B::kl=\E[D:kr=\E[C:ku=\E[A:le=^H: |
646 | mb=\E[5m:md=\E[1m:me=\E[m:mr=\E[7m: |
647 | kb=\0177: |
648 | r2=\E>\E[24;1H\E[?3l\E[?4l\E[?5l\E[?7h\E[?8h\E=:rc=\E8: |
649 | sc=\E7:se=\E[27m:sf=\ED:so=\E[7m:sr=\EM:ta=^I: |
650 | ue=\E[24m:up=\E[A:us=\E[4m:ve=\E[?25h:vi=\E[?25l: |
651 | |