Add try_init
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parent
6973b1cf0f
commit
078d9a24a7
32
src/lib.rs
32
src/lib.rs
@ -23,7 +23,7 @@
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//! you can leave this line in your Unix builds too, it will simply do nothing.
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#[cfg(windows)]
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pub fn init() {
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pub fn try_init() -> Result<(), ()> {
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use winapi::shared::minwindef::DWORD;
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use winapi::um::consoleapi::{GetConsoleMode, SetConsoleMode};
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use winapi::um::processenv::GetStdHandle;
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@ -33,11 +33,33 @@ pub fn init() {
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let console_out = unsafe { GetStdHandle(STD_OUTPUT_HANDLE) };
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let mut state: DWORD = 0;
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assert_ne!(unsafe { GetConsoleMode(console_out, &mut state) }, 0);
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state |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
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state &= !DISABLE_NEWLINE_AUTO_RETURN;
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assert_ne!(unsafe { SetConsoleMode(console_out, state) }, 0);
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let mut ret: Result<(), _> = Ok(());
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unsafe {
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let mut e: DWORD = 0;
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if GetConsoleMode(console_out, &mut state) == 0 {
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ret = Err(());
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}
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if ret.is_ok() {
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state |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
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state &= !DISABLE_NEWLINE_AUTO_RETURN;
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if SetConsoleMode(console_out, state) == 0 {
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ret = Err(());
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}
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}
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}
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return ret;
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}
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#[cfg(windows)]
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pub fn init() {
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assert_eq!(try_init().is_ok(), true);
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}
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#[cfg(not(windows))]
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pub fn try_init() -> Result<(), ()> {
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Ok(())
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}
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#[cfg(not(windows))]
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pub fn init() {
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;
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