vt52chars.pl revision a5ae21e4 
1#!/usr/bin/env perl
2# $XTermId: vt52chars.pl,v 1.1 2019/07/08 20:27:21 tom Exp $
3# -----------------------------------------------------------------------------
4# Copyright 2019 by Thomas E. Dickey
5#
6#                         All Rights Reserved
7#
8# Permission is hereby granted, free of charge, to any person obtaining a
9# copy of this software and associated documentation files (the
10# "Software"), to deal in the Software without restriction, including
11# without limitation the rights to use, copy, modify, merge, publish,
12# distribute, sublicense, and/or sell copies of the Software, and to
13# permit persons to whom the Software is furnished to do so, subject to
14# the following conditions:
15#
16# The above copyright notice and this permission notice shall be included
17# in all copies or substantial portions of the Software.
18#
19# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22# IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
23# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26#
27# Except as contained in this notice, the name(s) of the above copyright
28# holders shall not be used in advertising or otherwise to promote the
29# sale, use or other dealings in this Software without prior written
30# authorization.
31# -----------------------------------------------------------------------------
32# show the vt52 graphic characters, annotatated in a table.
33
34sub clear() {
35    printf "\033H";    # home
36    printf "\033J";    # erase
37}
38
39sub move($$) {
40    my $y = shift;
41    my $x = shift;
42    printf "\033Y%c%c", $y + 32, $x + 32;
43}
44
45sub start_vt52() {
46    printf "\033[?2l";
47}
48
49sub stop_vt52() {
50    printf "\033<";
51}
52
53sub show_char() {
54    my $value  = shift;
55    my $string = shift;
56    my $chr    = $value - 0140;
57    return if ( $chr < 0 );    # not supported by xterm
58    $value &= 0xff;
59    my $y = 2 + int( $chr % 16 );
60    my $x = 6 + int( $chr / 16 ) * 40;
61    &move( $y, $x );
62    printf "%03o \033F%s\033G %s", $value, chr($value), $string;
63}
64
65sub show_table() {
66    &clear;
67    &move( 0, 28 );
68    printf "VT52 graphic characters";
69    &show_char( 0140, "reserved" );
70    &show_char( 0141, "solid rectangle" );
71    &show_char( 0142, "1/" );
72    &show_char( 0143, "3/" );
73    &show_char( 0144, "5/" );
74    &show_char( 0145, "7/" );
75    &show_char( 0146, "degrees" );
76    &show_char( 0147, "plus or minus" );
77    &show_char( 0150, "right arrow" );
78    &show_char( 0151, "ellipsis" );
79    &show_char( 0152, "divide by" );
80    &show_char( 0153, "down arrow" );
81    &show_char( 0154, "bar at scan 0" );
82    &show_char( 0155, "bar at scan 1" );
83    &show_char( 0156, "bar at scan 2" );
84    &show_char( 0157, "bar at scan 3" );
85    &show_char( 0160, "bar at scan 4" );
86    &show_char( 0161, "bar at scan 5" );
87    &show_char( 0162, "bar at scan 6" );
88    &show_char( 0163, "bar at scan 7" );
89    &show_char( 0164, "subscript 0" );
90    &show_char( 0165, "subscript 1" );
91    &show_char( 0166, "subscript 2" );
92    &show_char( 0167, "subscript 3" );
93    &show_char( 0170, "subscript 4" );
94    &show_char( 0171, "subscript 5" );
95    &show_char( 0172, "subscript 6" );
96    &show_char( 0173, "subscript 7" );
97    &show_char( 0174, "subscript 8" );
98    &show_char( 0175, "subscript 9" );
99    &show_char( 0176, "paragraph" );
100    &move( 19, 6 );
101    printf "BAR[\033F\154\155\156\157\160\161\162\163\033G]";
102    &move( 23, 0 );
103}
104
105&start_vt52;
106&show_table;
107&stop_vt52;
108
1091;
110