+++ /dev/null
-#!/usr/bin/perl
-
-### SDC - small desktop calculator ###
-# reverse polish notition calculator using curses
-# by Shiar <shiar.org>
-
-# 1.01 06-18 - start
-# 1.03 06-25 -
-# 1.04 08-04 14:45 - error dialog (don't mess up screen)
-# 1.05 09-10 19:45 - hp48-like drop (backspace but not editing value)
-# - argument checking
-# - command backspacing
-# 1.06 09-15 23:10 - menu contents in module
-# - new commands: a?(sin|cos|tan)h, inv, !, rand
-# - x and v shortkeys
-# 1.07 09-24 23:50 - numeric modifiers hardcoded instead of in action hash
-# - action undo: last stack alteration can be undone
-# - enter on no value repeats last val on stack
-# - new commands: sr/sr, shortkeys ( )
-
-use strict;
-use warnings;
-use utf8;
-
-use Term::ReadKey;
-use Curses;
-use SDC::Menu 1.006;
-
-initscr;
-ReadMode 3; # cbreak mode
-END {
- ReadMode 0;
- endwin;
-} # restore terminal on quit
-
-my $height = $LINES<3 ? 4 : $LINES-3; # stack depth (lines of stack plus one)
-my $width = $COLS || 42; # limit value precision, stetch menu
-
-my %val = qw(i 0 frac 0); # i, frac
-my @stack;
-my %var;
-my @menu;
-my $menumin;
-my %set = (
- base => 10,
- numb => 0, # fixed scientific engineering
- card => 1, # degrees radians grades
- coord => 0, # cartesian polar spherical
- complex => 0, # real complex
- menushow => 12,
-); # %set
-
-@menu = @{$menus[0]};
-$menumin = 0;
-
-my %falias = (
- "\033" => 0, # esc
- "\033\117\120" => 1, # f1
- "\033\133\061\061\176" => 1, # f1
- "\033\133\061\062\176" => 2, # f2
- "\033\133\061\063\176" => 3, # f3
- "\033\133\061\064\176" => 4, # f4
- "\033\117\121" => 2, # f2
- "\033\117\122" => 3, # f3
- "\033\117\123" => 4, # f4
- "\033\133\061\065\176" => 5, # f5
- "\033\133\061\067\176" => 6, # f6
- "\033\133\061\070\176" => 7, # f7
- "\033\133\061\071\176" => 8, # f8
- "\033\133\062\060\176" => 9, # f9
- "\033\133\062\061\176" => 10, # f10
- "\033\133\062\063\176" => 11, # f11/F1
- "\033\133\062\064\176" => 12, # f12/F2
- "\033\133\062\065\176" => 13, # F3
- "\033\133\062\066\176" => 14, # F4
- "\033\133\062\070\176" => 15, # F5
- "\033\133\062\071\176" => 16, # F6
- "\033\133\063\061\176" => 17, # F7
- "\033\133\063\062\176" => 18, # F8
- "\033\133\063\063\176" => 19, # F9
- "\033\133\063\064\176" => 20, # F10
- "\033\133\062\063\073\062\176" => 21, # F11
- "\033\133\062\064\073\062\176" => 22, # F12
-); # %falias
-
-my %alias = (
- chr 4 => 'quit', # ^D
- chr 9 => 'more', # tab
- '_' => 'chs', # change sign; 48: y
- 'e' => 'eex', # exponent; 48: z
- "\033\133\062\176" => 'eex', # ins
- "\033\133\063\176" => "clear", # del
- chr 127 => 'drop', # backspace
- chr 8 => 'drop', # backspace
- chr 13 => 'enter', # enter
- ' ' => 'enter', # space
- "\014" => 'refresh', # ^L
-# "\033\133\110" => 'refresh', # home
-
-# "\033\133\101" => '', # up; 48: k (stack)
- "\033\133\104" => 'undo', # left; 48: p (picture)
-# "\033\133\102" => '', # down; 48: q (view)
- "\033\133\103" => 'swap', # right; 48: r (swap)
-
- '&' => 'and',
- '|' => 'or',
- '#' => 'xor',
- '~' => 'not',
- '(' => 'sl',
- ')' => 'sr',
-
- "s" => "sin",
- "\033s" => "asin",
- "c" => "cos",
- "\033c" => "acos",
- "t" => "tan",
- "\033t" => "atan",
- "l" => "log",
- "\033l" => "alog",
- "n" => "ln",
- "\033n" => "exp",
- "q" => "sq",
- "\033q" => "sqrt",
- "x" => "^",
- "\033x" => "xroot",
- "\033^" => "xroot",
- "v" => "inv",
-); # %alias
-
-=cut
-HP48 keys:
- S T U V W X
- - sin cos tan sqrt ^ 1/x
- < asin acos atan sq alog exp
- > [a] ∫ ∑ xroot log ln
-=cut
-
-my %action = (
- 'more' => [-1, sub {
- $menumin += $set{menushow};
- $menumin = 0 if $menumin>=$#menu;
- showmenu();
- }], # tab
- 'chs' => [0, sub {$stack[0] = -$stack[0]}], # negative
-
- 'drop' => [0, sub {shift @stack}], # backspace
- 'clear'=> [0, sub {@stack = (); %val = (i=>undef, frac=>0) }], # clear all #todo: if (val{i}) delete char after cursor
-
- 'enter'=> [0, sub {
- unshift @stack, defined $val{i} ? $val{i} : $stack[0];
- %val = (i=>undef, frac=>0);
- }], # duplication
-
- 'swap' => [1, sub {@stack[0, 1] = @stack[1, 0]}], # swap x<->y
-
- '=' => [1, sub {$var{a} = $stack[0]}], # copy
- '?' => [1, sub {$var{a} = shift @stack}], # assign
-
- '+' => [2, sub {$stack[1] += shift @stack}], # addition
- '-' => [2, sub {$stack[1] -= shift @stack}], # substraction
- '*' => [2, sub {$stack[1] *= shift @stack}], # multiplication
- '/' => [2, sub {$stack[1] /= shift @stack}], # division
- 'mod' => [2, sub {$stack[1] %= shift @stack}], # modulo
-
- 'inv' => [1, sub {$stack[0] = 1 / $stack[0]}], # 1/x
- 'sqrt' => [1, sub {$stack[0] = sqrt $stack[0]}], # square root
- 'sq' => [1, sub {$stack[0] *= $stack[0]}], # squared
- '^' => [2, sub {$stack[1] **= shift @stack}], # exponentiation
- 'xroot'=> [2, sub {$stack[1] **= 1 / shift @stack}], # x-root of y
-
- 'log' => [1, sub {$stack[0] = log($stack[0]) / log(10)}], # logarithm
- 'alog' => [1, sub {$stack[0] = 10 ** $stack[0]}], # 10^x
- 'ln' => [1, sub {$stack[0] = log $stack[0]}], # natural logaritm
- 'lnp1' => [1, sub {$stack[0] = log($stack[0]+1)}], # ln(x+1)
- 'exp' => [1, sub {$stack[0] = exp($stack[0])}], # e^x
- 'expm' => [1, sub {$stack[0] = exp($stack[0])-1}], # exp(x)-1
-
- 'sin' => [1, sub {$stack[0] = sin $stack[0]}], # sine
- 'asin' => [1, sub {$stack[0] = atan2($stack[0], sqrt(1 - $stack[0]*$stack[0]))}], # inverse sine
- 'cos' => [1, sub {$stack[0] = cos $stack[0]}], # cosine
- 'acos' => [1, sub {$stack[0] = atan2(sqrt(1 - $stack[0]*$stack[0]), $stack[0])}], # inverse cosine
- 'tan' => [1, sub {$stack[0] = sin($stack[0]) / cos($stack[0])}], # tangent
-# 'atan' => [1, sub {}], # arctangent
-
- 'sinh' => [1, sub {$stack[0] = ( exp($stack[0]) - exp(-$stack[0]) )/2}], # hyperbolic sine
- 'cosh' => [1, sub {$stack[0] = ( exp($stack[0]) + exp(-$stack[0]) )/2}], # hyperbolic cosine
- 'tanh' => [1, sub {$stack[0] = ( exp($stack[0]) - exp(-$stack[0]) )/( exp($stack[0]) + exp(-$stack[0]) )}], # hyperbolic tangent (sinh/cosh)
- 'asinh'=> [1, sub {$stack[0] = log( sqrt($stack[0]**2+1)+$stack[0] )}], # inverse hyperbolic sine
- 'acosh'=> [1, sub {$stack[0] = log( sqrt($stack[0]**2-1)+$stack[0] )}], # inverse hyperbolic cosine
- 'atanh'=> [1, sub {$stack[0] = log( (1+$stack[0]) / (1-$stack[0]) )/2}], # inverse hyperbolic tangent
-
- '%' => [2, sub {$stack[0] /= shift @stack}], # percentage
- '%ch' => [2, sub {$val{i} = 100*(shift(@stack)-$val{i})/$val{i}}], # percentage change
- '%t' => [2, sub {$val{i} = 100*$val{i}/shift(@stack)}], # percentage total
-
- 'and' => [2, sub {$stack[1] &= shift @stack}], # bitwise and
- 'or' => [2, sub {$stack[1] |= shift @stack}], # bitwise or
- 'xor' => [2, sub {$stack[1] ^= shift @stack}], # bitwise xor
- 'not' => [2, sub {$stack[0] = ~$stack[0]}], # bitwise not
- 'sl' => [1, sub {$stack[0] *= 2}], # shift left
- 'sr' => [1, sub {$stack[0] /= 2}], # shift right
-
- 'abs' => [1, sub {$stack[0] = abs $stack[0]}], # absolute #todo
- 'sign' => [1, sub {$stack[0] = $stack[0] <=> 0}], # sign
- 'ip' => [1, sub {$stack[0] = int $stack[0]}], # integer part
- 'fp' => [1, sub {$stack[0] -= int $stack[0]}], # fractional part
-
- 'rnd' => [1, sub {local $_ = 10**shift @stack; $val{i} = int(($val{i}+.5)*$_)/$_}], # round
- 'trnc' => [1, sub {local $_ = 10**shift @stack; $val{i} = int($val{i}*$_)/$_}], # truncate
- 'floor'=> [1, sub {$stack[0] = int $stack[0]}], # floor
- 'ceil' => [1, sub {$stack[0] = int $stack[0]+.9999}], # ceil
-
- 'min' => [2, sub {local $_ = shift @stack; $stack[0] = $_ if $_<$stack[0] }], # minimum
- 'max' => [2, sub {local $_ = shift @stack; $stack[0] = $_ if $_>$stack[0] }], # maximum
-
- 'dec' => [0, sub {$set{base} = 10}], # decimal
- 'bin' => [0, sub {$set{base} = 2}], # binary
- 'oct' => [0, sub {$set{base} = 8}], # octal
- 'hex' => [0, sub {$set{base} = 16}], # hexadecimal
- 'base' => [1, sub {$set{base} = shift @stack}], # alphanumerical
-
- '!' => [1, sub {local $_ = $stack[0]; $stack[0] *= $_ while --$_>1}], # factor
- 'rand' => [0, sub {unshift @stack, rand}], # random value <1
-
- 'undo' => [0, sub {@stack = @{ $var{undo} }}], # undo
-); # %action
-
-my %unit;
-{
-my $i = 0;
-$unit{$_->[0]} = { name=>$_->[0], type=>$i, val=>$_->[1] } for map {$i++; @$_} (
- [
- ['m', 1],
- ['cm', .01],
- ['mm', .001],
- ['km', 1000],
- ['ft', .3048],
- ['in', .0254],
- ['yd', .9144],
- ['mile', 1609.344],
- ['nmile', 1852],
- ['lyr', 9.46052840488e+15],
- ['mil', 2.54e-5],
- # _m _cm _mm _yd _ft _in _Mpc _pc _lyr _au _km _mi
- # _nmi _miUS _chain _rd _fath _ftUS _Mil _μ _Å _fermi
- ], # lengths
- [
- ['m^3', 1],
- ['cm^3', 1e-6],
- ['ft^3', .028316846592],
- ['in^3', 1.6387064e-5],
- ], # volume
-);
-} # create unit table
-
-
-sub error($) {
- attron(A_REVERSE);
- addstr(0, 0, shift);
- attroff(A_REVERSE);
- clrtoeol;
- refresh;
-
- ReadKey; # wait for confirm
- 1 while defined (ReadKey -1); # clear key buffer
-} # error
-
-sub showval($$);
-sub showval($$) {
- my ($val, $base) = @_;
- return '' unless defined $val;
- return $val if $base==10;
-
- my $int = int $val;
- my $frac = $val-$int;
- my $exp = 0;
-
- my $txt = '';
- while ($int>$base**10) {
- $int /= $base;
- $exp++;
- } # exponent part
- while ($int>=1) {
- my $char = $int%$base;
- $txt = ($char<10 ? $char : chr($char+55)).$txt;
- $int /= $base;
- } # integer part
-
- $txt .= '.' if $frac>0;
- for (my $i = 0; length $txt<$width-2 && $frac>0; $i++) {
- $frac *= $base;
- my $char = int $frac;
- $frac -= $char;
- $txt .= $char<10 ? $char : chr($char+55);
- } # fraction part
-
- $txt .= 'e'.showval($exp, $base) if $exp;
-
- return $txt;
-} # showval
-
-sub showstack() {
- for (0..@stack-1) {
- addstr($height-$_, 1, "$_: ".showval($stack[$_], $set{base}));
- clrtoeol;
- } # show stack
- clrtoeol($height-$#stack-1, 1);
-} # showstack
-
-sub showmenu() {
- clrtoeol($height+2, 1);
- my $nr = 0;
- for (grep exists $menu[$_], $menumin+1..$menumin+$set{menushow}) {
- my $sub = (my $s = $menu[$_]) =~ s/>\d+$//;
- addstr($height+2, $width/$set{menushow}*($nr++), $_);
- attron(A_REVERSE);
- addstr($s);
- attroff(A_REVERSE);
- addch('>') if $sub;
- } # display menu txts
-} # showmenu
-
-
-DRAW:
-clear;
-showmenu();
-showstack();
-addstr($height+1, 0, "> "); # prompt
-
-while (1) {
- addstr($height+1, 2, showval($val{i}, $set{base}));
- addstr('_'.$val{unit}{name}) if exists $val{unit};
- addstr($val{bla}) if exists $val{bla};
- clrtoeol;
- refresh;
-
- $_ = ReadKey;
- if ($_ eq chr 27) {
- while (defined (my $key = ReadKey -1)) {
- $_ .= $key;
- } # read additional keys
- } # escape sequence
-
- exists $alias{$_} and $_ = $alias{$_}; # command shortkeys
- if (exists $falias{$_}) {
- unless ($_ = $menu[$falias{$_}]) {
- error("* no such menu entry *");
- goto DRAW;
- }
- } # function key
-
- $_ = delete $val{bla} if exists $val{bla} and $_ eq 'enter';
-
- if ($_ eq 'quit') {
- last;
- } # quit
- elsif ($_ eq 'refresh') {
- goto DRAW;
- } # refresh
-
- elsif (exists $val{bla} or /^[A-Z]$/) {
- if (defined $val{i}) {
- unshift @stack, $val{i};
- %val = (i=>undef, frac=>0);
- showstack();
- } # enter present value
- if ($_ eq "drop") {
- $val{bla} = substr $val{bla}, 0, -1 or delete $val{bla};
- } # backspace
- else {
- $val{bla} .= lc $_;
- } # add character
- } # manual command
-
- elsif (/^\d$/) {
- $val{i} = 0 unless defined $val{i};
- $val{i} = ($val{frac} *= 10) ? $val{i}+$_/$val{frac} : $val{i}*10+$_;
- }
- elsif ($_ eq '.') {
- $val{i} = 0 unless defined $val{i};
- $val{frac} = 1;
- } # decimal point
- elsif ($_ eq 'eex') {
- $val{i} = 1 unless defined $val{i};
- #todo
- } # exponent
- elsif ($_ eq 'chs' and defined $val{i}) {
- $val{i} = -$val{i};
- } # change sign
- elsif ($_ eq 'drop' and defined $val{i}) {
- $val{i} = ($val{frac} = int $val{frac}/10)
- ? int($val{i}*$val{frac})/$val{frac} : int $val{i}/10
- } # backspace
-
- elsif (exists $action{$_} or /^\d$/) {
- my ($type, $cmd) = @{ $action{$_} };
- if ($type>0 and defined $val{i}) {
- unshift @stack, $val{i};
- %val = (i=>undef, frac=>0);
- } # auto enter
- if ($type>0 and $type>@stack) {
- error("* insufficient stack arguments for operation *");
- goto DRAW;
- } # insufficient arguments
- $var{undo} = [@stack] if $type>=0 and $_ ne 'undo';
- $cmd->();
- showstack() if $type>=0;
- } # some operation
-
- elsif (/>(\d+)$/) {
- @menu = @{ $menus[$1] };
- $menumin = 0;
- showmenu();
- } # submenu
-
- elsif ($_ =~ /^_/) {{
- $_ = $unit{substr $_, 1} or next;
- if (exists $val{unit} and $val{unit}{type}==$_->{type}) {
- unshift @stack, $val{i} if defined $val{i};
- $stack[0] *= delete($val{unit})->{val} / $_->{val};
- showstack();
- %val = (i=>undef, frac=>0);
- } # convert
- else {
- $val{unit} = $_;
- } # set source unit
- }} # conversion
-
- else {
- error("* error: ".join(' ', map ord, split //, $_)." *");
- goto DRAW; # screen messed up
- } # error
-} # input loop
-
git.shiar.nl / descalc.git / blobdiff