mirror of
https://github.com/cc65/cc65.git
synced 2024-06-28 19:29:53 +00:00
63 lines
1.6 KiB
Plaintext
63 lines
1.6 KiB
Plaintext
; Convert characters to screen codes
|
|
|
|
; Helper macro that converts and outputs one character
|
|
.macro _scrcode char
|
|
.if (char >= '@' .and char <= 'z')
|
|
.byte (char - '@')
|
|
.elseif (char >= 'A' .and char <= 'Z')
|
|
.byte (char - 'A' + 65)
|
|
.elseif (char = '[')
|
|
.byte 27
|
|
.elseif (char = ']')
|
|
.byte 29
|
|
.elseif (char = '^')
|
|
.byte 30
|
|
.elseif (char = '_')
|
|
.byte 31
|
|
.elseif (char < 256)
|
|
.byte char
|
|
.else
|
|
.error "scrcode: Character constant out of range"
|
|
.endif
|
|
.endmacro
|
|
|
|
.macro scrcode arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9
|
|
|
|
; Bail out if next argument is empty
|
|
.if .blank (arg1)
|
|
.exitmacro
|
|
.endif
|
|
|
|
; Check for a string
|
|
.if .match ({arg1}, "")
|
|
|
|
; Walk over all string chars
|
|
.repeat .strlen (arg1), i
|
|
_scrcode {.strat (arg1, i)}
|
|
.endrepeat
|
|
|
|
; Check for a number
|
|
.elseif .match (.left (1, {arg1}), 0)
|
|
|
|
; Just output the number
|
|
_scrcode arg1
|
|
|
|
; Check for a character
|
|
.elseif .match (.left (1, {arg1}), 'a')
|
|
|
|
; Just output the character
|
|
_scrcode arg1
|
|
|
|
; Anything else is an error
|
|
.else
|
|
|
|
.error "scrcode: invalid argument type"
|
|
|
|
.endif
|
|
|
|
; Call the macro recursively with the remaining args
|
|
scrcode arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9
|
|
.endmacro
|
|
|
|
|