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term: add better error detection on Windows

pull/1347/head
joe-conigliaro 2019-07-29 01:19:03 +10:00 committed by Alexander Medvednikov
parent 2a30564ed1
commit c7edeb00a8
1 changed files with 14 additions and 4 deletions
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18
vlib/term/colors.v
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@ -11,14 +11,24 @@ import os
// is imported on a certain os. for example to run this?
pub fn enable_term_color_win() {
$if windows {
mode_wanted := os.ENABLE_PROCESSED_OUTPUT | os.ENABLE_VIRTUAL_TERMINAL_PROCESSING
mut mode_current := 0
h_output := C.GetStdHandle(os.STD_OUTPUT_HANDLE)
if h_output == os.INVALID_HANDLE_VALUE
|| !C.SetConsoleMode(h_output, os.ENABLE_PROCESSED_OUTPUT|os.ENABLE_VIRTUAL_TERMINAL_PROCESSING) {
println('enable_term_color_win() Sorry, there was an error enabling terminal color.')
if h_output == os.INVALID_HANDLE_VALUE {
panic('term.enable_term_color_win(): error getting output handle.')
}
if !C.GetConsoleMode(h_output, &mode_current) {
panic('term.enable_term_color_win(): error getting console mode.')
}
if mode_wanted == mode_current {
return
}
if !C.SetConsoleMode(h_output, mode_wanted) {
panic('term.enable_term_color_win(): error setting console mode.')
}
}
$else {
println('enable_term_color_win() should only be called on windows.')
println('term.enable_term_color_win() should only be called on windows.')
}
}