203 lines
8.2 KiB
Fortran
203 lines
8.2 KiB
Fortran
module vt100
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character, parameter :: EFFECT_NORMAL = "0"
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character, parameter :: EFFECT_BOLD = "1"
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character, parameter :: EFFECT_ITALIC = "3"
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character, parameter :: EFFECT_UNDERLINE = "4"
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character, parameter :: EFFECT_BLINK = "5"
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character, parameter :: EFFECT_REVERSE = "7"
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character, parameter :: COLOUR_GREY = "0"
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character, parameter :: COLOUR_RED = "1"
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character, parameter :: COLOUR_GREEN = "2"
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character, parameter :: COLOUR_YELLOW = "3"
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character, parameter :: COLOUR_BLUE = "4"
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character, parameter :: COLOUR_PINK = "5"
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character, parameter :: COLOUR_CYAN = "6"
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character, parameter :: COLOUR_WHITE = "7"
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end module vt100
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program xscii
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use vt100
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integer :: code = 0
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do while (code /= 2 ** 7)
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call print_base (code, 2, 7, '0', COLOUR_WHITE, EFFECT_NORMAL)
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call print_base (code, 8, 3, '0', COLOUR_CYAN, EFFECT_NORMAL)
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call print_base (code, 10, 3, ' ', COLOUR_CYAN, EFFECT_ITALIC)
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call print_base (code, 16, 2, '0', COLOUR_CYAN, EFFECT_BOLD)
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call print_code (code, COLOUR_BLUE, EFFECT_BOLD)
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call print_name (code, COLOUR_PINK, EFFECT_NORMAL)
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if (modulo (code, 2) /= 0) then
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call print_line
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end if
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code = code + 1
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end do
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end program xscii
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subroutine print_line
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print *
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end subroutine print_line
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subroutine print_letter (letter)
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character, intent (in) :: letter
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write (*, '(a)', advance='no') letter
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end subroutine print_letter
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subroutine print_string (string)
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character (len=*), intent (in) :: string
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write (*, '(a)', advance='no') string
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end subroutine print_string
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subroutine print_align (limit, align)
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integer, intent (in) :: limit
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character, intent (in) :: align
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do i = 1, limit
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call print_string (align)
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end do
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end subroutine print_align
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subroutine print_colour (colour, effect)
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use vt100
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character, intent (in) :: colour
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character, intent (in) :: effect
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call print_string (char (27) // "[" // effect // ";3" // colour // "m")
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end subroutine print_colour
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subroutine print_cancel
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call print_string (char (27) // "[0m")
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end subroutine print_cancel
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subroutine print_bar
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use vt100
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call print_colour (COLOUR_GREY, EFFECT_BOLD)
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write (*, '(a)', advance='no') " | "
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call print_cancel
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end subroutine print_bar
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subroutine print_base (code, base, limit, align, colour, effect)
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use vt100
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integer, intent (in) :: code
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integer, intent (in) :: base
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integer, intent (in) :: limit
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character, intent (in) :: align
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character, intent (in) :: colour
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character, intent (in) :: effect
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character (16) :: cypher
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character (16) :: output
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integer :: length
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integer :: modify
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cypher = "0123456789ABCDEF"
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output = " "
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length = 1
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modify = code
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call print_bar
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call print_colour (colour, effect)
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if (modify == 0) then
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call print_align (limit - 1, align)
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call print_string ("0")
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call print_cancel
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return
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end if
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do while (modify /= 0)
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i = modulo (modify, base) + 1
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output (length : length) = cypher (i : i)
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length = length + 1
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modify = modify / base
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end do
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call print_align (limit - length + 1, align)
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do while (length /= 1)
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call print_letter (output (length - 1 : length - 1))
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length = length - 1
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end do
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call print_cancel
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end subroutine print_base;
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subroutine print_code (code, colour, effect)
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use vt100
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integer, intent (in) :: code
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character, intent (in) :: colour
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character, intent (in) :: effect
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character (3), dimension (32) :: code_name
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code_name = [ &
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"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL", "BS ", "HT ", "LF ", "VT ", "FF ", "CR ", "SO ", "SI ", &
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"DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB", "CAN", "EM ", "SUB", "ESC", "FS ", "GS ", "RS ", "US " &
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]
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call print_bar
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call print_colour (colour, effect)
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if (code == 2 ** 7 - 1) then
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call print_string ("DEL")
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call print_cancel
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return
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end if
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if (code <= 2 ** 5 - 1) then
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call print_string (code_name (code + 1))
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else
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call print_letter (char (code))
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call print_string (" ")
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end if
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call print_cancel
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end subroutine print_code
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subroutine print_name (code, colour, effect)
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use vt100
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integer, intent (in) :: code
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character, intent (in) :: colour
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character, intent (in) :: effect
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character (24), dimension (128) :: code_name
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code_name = [ &
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"Null ", "Start of heading ", "Start of text ", "End of text ", &
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"End of transmission ", "Enquiry ", "Acknowledge ", "Bell ", &
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"Backspace ", "Horizontal tab ", "Line feed ", "Vertical tab ", &
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"Form feed ", "Carriage return ", "Shift out ", "Shift in ", &
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"Data link escape ", "Device control 1 ", "Device control 2 ", "Device control 3 ", &
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"Device control 4 ", "Negative acknowledge ", "Synchronous idle ", "End transmission block ", &
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"Cancel ", "End of medium ", "Substitute ", "Escape ", &
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"File separator ", "Group separator ", "Record separator ", "Unit separator ", &
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"Space ", "Exclamation mark ", "Speech mark ", "Number sign ", &
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"Dollar sign ", "Percent ", "Ampersand ", "Quote ", &
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"Open parenthesis ", "Close parenthesis ", "Asterisk ", "Plus ", &
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"Comma ", "Minus ", "Period ", "Slash ", &
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"Zero ", "One ", "Two ", "Three ", &
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"Four ", "Five ", "Six ", "Seven ", &
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"Eight ", "Nine ", "Colon ", "Semicolon ", &
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"Open angled bracket ", "Equal ", "Close angled bracket ", "Question mark ", &
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"At sign ", "Uppercase A ", "Uppercase B ", "Uppercase C ", &
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"Uppercase D ", "Uppercase E ", "Uppercase F ", "Uppercase G ", &
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"Uppercase H ", "Uppercase I ", "Uppercase J ", "Uppercase K ", &
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"Uppercase L ", "Uppercase M ", "Uppercase N ", "Uppercase O ", &
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"Uppercase P ", "Uppercase Q ", "Uppercase R ", "Uppercase S ", &
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"Uppercase T ", "Uppercase U ", "Uppercase V ", "Uppercase W ", &
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"Uppercase X ", "Uppercase Y ", "Uppercase Z ", "Opening bracket ", &
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"Backslash ", "Closing bracket ", "Caret ", "Underscore ", &
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"Grave ", "Lowercase a ", "Lowercase b ", "Lowercase c ", &
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"Lowercase d ", "Lowercase e ", "Lowercase f ", "Lowercase g ", &
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"Lowercase h ", "Lowercase i ", "Lowercase j ", "Lowercase k ", &
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"Lowercase l ", "Lowercase m ", "Lowercase n ", "Lowercase o ", &
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"Lowercase p ", "Lowercase q ", "Lowercase r ", "Lowercase s ", &
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"Lowercase t ", "Lowercase u ", "Lowercase v ", "Lowercase w ", &
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"Lowercase x ", "Lowercase y ", "Lowercase z ", "Opening brace ", &
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"Vertical bar ", "Closing brace ", "Tilde ", "Delete " &
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]
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call print_bar
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call print_colour (colour, effect)
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call print_string (code_name (code + 1))
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call print_cancel
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end subroutine print_name
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