#!/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;
+ReadMode 3; # cbreak mode
+END {
+ ReadMode 0;
+ endwin;
+} # restore terminal on quit
-my $height = $LINES-3;
-my $width = 42; #COLS
+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 @val;
-my $nopush; # 0=push and reset next; 1=reset next; 2=do nothing
-my $base = 10;
+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
-INIT: {
+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($) {
+ attron(A_REVERSE);
+ addstr(0, 0, shift);
+ attroff(A_REVERSE);
+ clrtoeol;
+ refresh;
-@stack = ();
-@val = (0, 0); # val, frac
-$nopush = 1;
+ 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++) {
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($stack[$_], $base));
+ addstr($height-$_, 1, "$_: ".showval($stack[$_], $set{base}));
clrtoeol;
} # show stack
clrtoeol($height-$#stack-1, 1);
} # showstack
-sub showmenu($) {
- my @menus = ([qw(xroot log alog)], [qw(dec bin oct hex)]);
- @menu = @{$menus[shift]};
- attron(A_REVERSE);
- addstr($height+2, $width/6*$_+1, join " ", $menu[$_]) for grep exists $menu[$_], 0..5;
- attroff(A_REVERSE);
- clrtoeol;
- addstr($height+2, $width/6*$_, $_+1) for grep exists $menu[$_], 0..5;
+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
-my %falias = (
- chr(27).chr(79).chr(80) => 0, # F1
- chr(27).chr(79).chr(81) => 1, # F2
- chr(27).chr(79).chr(82) => 2, # F3
- chr(27).chr(79).chr(83) => 3, # F4
- chr(27).chr(91).chr(49).chr(53).chr(126) => 4, # F5
- chr(27).chr(91).chr(49).chr(55).chr(126) => 5, # F6
- chr(27).chr(91).chr(49).chr(56).chr(126) => 6, # F7
- chr(27).chr(91).chr(49).chr(57).chr(126) => 7, # F8
- chr(27).chr(91).chr(50).chr(48).chr(126) => 8, # F9
- chr(27).chr(91).chr(50).chr(49).chr(126) => 9, # F10
- chr(27).chr(91).chr(50).chr(51).chr(126) => 10, # F11
- chr(27).chr(91).chr(50).chr(52).chr(126) => 10, # F12
-); # %falias
-
-my %alias = (
- q => chr 4, # quit
- s => 'sin',
- c => 'cos',
- t => 'tan',
- l => 'log',
- x => 'xroot',
- chr 8 => chr 127, # backspace
-); # %alias
-
-my %action = (
- chr 13 => sub {
- unshift @stack, $stack[0];
- $nopush = 1;
- }, # duplication
-
- '+' => sub {
- $stack[1] += shift @stack;
- }, # addition
- '-' => sub {
- $stack[1] -= shift @stack;
- }, # substraction
- '*' => sub {
- $stack[1] *= shift @stack;
- }, # multiplication
- '/' => sub {
- $stack[1] /= shift @stack;
- }, # division
- '%' => sub {
- $stack[1] %= shift @stack;
- }, # modulus
-
- '^' => sub {
- $stack[1] **= shift @stack;
- }, # exponentiation
- 'xroot' => sub {
- $stack[1] **= 1/shift @stack;
- }, # x-root of y
-
- '&' => sub {
- $stack[1] &= shift @stack;
- }, # bitwise and
- '|' => sub {
- $stack[1] |= shift @stack;
- }, # bitwise or
- '#' => sub {
- $stack[1] ^= shift @stack;
- }, # bitwise xor
- '~' => sub {
- unshift @stack, ~(shift @stack);
- }, # bitwise not
-
- 'log' => sub {
- unshift @stack, log shift @stack;
- }, # logarithm
- 'alog' => sub {
- unshift @stack, 10 ** shift @stack;
- }, # 10^x
-
- 'sin' => sub {
- unshift @stack, sin shift @stack;
- }, # sine
- 'cos' => sub {
- unshift @stack, cos shift @stack;
- }, # cosine
- 'tan' => sub {
- local $_ = shift @stack;
- unshift @stack, sin($_) / cos($_);
- }, # tangent
-
- 'abs' => sub {
- unshift @stack, abs shift @stack;
- }, # absolute
- '_' => sub {
- unshift @stack, -shift @stack;
- }, # negative
- 'min' => sub {
- local $_ = shift @stack;
- $stack[1] = $_ if $_<$stack[1];
- }, # minimum
-
- 'dec' => sub {
- $base = 10;
- }, # decimal
- 'bin' => sub {
- $base = 2;
- }, # binary
- 'oct' => sub {
- $base = 8;
- }, # octal
- 'hex' => sub {
- $base = 16;
- }, # hexadecimal
- 'base36' => sub {
- $base = 36;
- }, # alphanumerical
-); # %action
+DRAW:
clear;
-showmenu(0);
-addstr($height+1, 0, "> ");
+showmenu();
+showstack();
+addstr($height+1, 0, "> "); # prompt
while (1) {
- addstr($height+1, 2, showval($val[0], $base));
+ addstr($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;
while (defined (my $key = ReadKey -1)) {
$_ .= $key;
} # read additional keys
- } # escape
-
- exists $alias{$_} and $_ = $alias{$_};
- exists $falias{$_} and $_ = $menu[$falias{$_}];
-
- if ($_ eq chr 4) {
- last INIT;
- } # ^D
- elsif ($_ eq chr 27) {
- redo INIT;
- } # escape
-
- elsif (/^[\d.]$/) {
- unshift @stack, $val[0] and showstack() unless $nopush;
- @val = (0, 0) if $nopush<2; # replace current
- $nopush = 2;
- if ($_ eq '.') {
- $val[1] = 1;
- } # dot
- elsif ($val[1] *= 10) {
- $val[0] += $_/$val[1];
- } # fraction
- else {
- $val[0] = $val[0]*10+$_;
- } # integer
- } # number
- elsif ($_ eq chr 127) {
- if ($val[1] = int $val[1]/10) {
- $val[0] = int($val[0]*$val[1])/$val[1];
- } else {
- $val[0] = int $val[0]/10
+ } # 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 $action{$_}) {
- unshift @stack, $val[0];
- $nopush = 0;
- $action{$_}();
- $val[0] = shift @stack;
- showstack();
+ 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 {
- print "\n* error: ", join(' ', map ord, split //, $_), "\n";
- }
+ error("* error: ".join(' ', map ord, split //, $_)." *");
+ goto DRAW; # screen messed up
+ } # error
} # input loop
-}
-
-ReadMode 0;
-endwin;
git.shiar.nl / descalc.git / blobdiff