79 lines
2.1 KiB
Rust
79 lines
2.1 KiB
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use either::*;
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use libc;
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pub trait Logger {
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fn log(&mut self, msg: Either<~str, &'static str>);
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}
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pub struct StdErrLogger;
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impl Logger for StdErrLogger {
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fn log(&mut self, msg: Either<~str, &'static str>) {
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use io::{Writer, WriterUtil};
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if !should_log_console() {
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return;
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}
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let s: &str = match msg {
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Left(ref s) => {
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let s: &str = *s;
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s
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}
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Right(ref s) => {
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let s: &str = *s;
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s
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}
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};
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let dbg = ::libc::STDERR_FILENO as ::io::fd_t;
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dbg.write_str(s);
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dbg.write_str("\n");
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dbg.flush();
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}
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}
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/// Configure logging by traversing the crate map and setting the
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/// per-module global logging flags based on the logging spec
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pub fn init(crate_map: *u8) {
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use os;
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use str::StrSlice;
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use ptr;
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use option::{Some, None};
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let log_spec = os::getenv("RUST_LOG");
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match log_spec {
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Some(spec) => {
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do spec.as_c_str |buf| {
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unsafe { rust_update_log_settings(crate_map, buf) }
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}
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}
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None => {
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unsafe {
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rust_update_log_settings(crate_map, ptr::null());
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}
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}
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}
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}
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pub fn console_on() { unsafe { rust_log_console_on() } }
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pub fn console_off() { unsafe { rust_log_console_off() } }
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fn should_log_console() -> bool { unsafe { rust_should_log_console() != 0 } }
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extern {
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fn rust_update_log_settings(crate_map: *u8, settings: *libc::c_char);
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fn rust_log_console_on();
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fn rust_log_console_off();
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fn rust_should_log_console() -> libc::uintptr_t;
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}
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