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achart.m
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1994-01-31
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1KB
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/*
ACHART - ASCII Character chart (including PC's upper ASCII).
Invoked by pressing CTRL_A.
(C) Copyright 1988 Marc Adler/Magma Systems All Rights Reserved
*/
#define CTRL_A 1
init()
{
assign_key("ASCII_Chart", CTRL_A);
}
ASCII_Chart()
{
/* Get the color to display the chart in */
fg = get_option("fg");
bg = get_option("bg");
attr = bg * 16 + fg;
for (i = 0; i <= 1; i++)
{
clear_screen();
row = 1;
col = 0;
/* Print the column headings */
for (c = 0; c < 6; c++)
display(0, c*13, 79, attr, "CH DEC HEX");
/* Determine the ending character for the loop */
if (i == 0)
endc = 128;
else
endc = 256;
for (c = i * 127 + 1; c < endc; c++)
{
s = sprintf("%s %d", chr(c), c);
display(row, col, 79, attr, s);
display(row, col+7, 79, attr, itox(c));
if (++row % 24 == 0)
{
col += 13;
row = 1;
}
}
get_tty_str("Press a key to continue...");
} /* end for i */
}
/*
Itox() - takes the passed integer and returns the hex representation
*/
itox(n)
{
hi = n / 16;
if (hi >= 10)
hi = 'A' + hi - 10;
else
hi += '0';
lo = n % 16;
if (lo >= 10)
lo = 'A' + lo - 10;
else
lo += '0';
return strcat(chr(hi), chr(lo));
}