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| <section id='main' class="content"><pre class="line-numbers"><span id="1"> 1</span> |
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| </pre><pre class="rust "> |
| <span class="comment">// Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT</span> |
| <span class="comment">// file at the top-level directory of this distribution and at</span> |
| <span class="comment">// http://rust-lang.org/COPYRIGHT.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span> |
| <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span> |
| <span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span> |
| <span class="comment">// option. This file may not be copied, modified, or distributed</span> |
| <span class="comment">// except according to those terms.</span> |
| |
| <span class="doccomment">//! A logger configured via an environment variable which writes to standard</span> |
| <span class="doccomment">//! error.</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ## Example</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ```</span> |
| <span class="doccomment">//! #[macro_use] extern crate log;</span> |
| <span class="doccomment">//! extern crate env_logger;</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! use log::LogLevel;</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! fn main() {</span> |
| <span class="doccomment">//! env_logger::init().unwrap();</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! debug!("this is a debug {}", "message");</span> |
| <span class="doccomment">//! error!("this is printed by default");</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! if log_enabled!(LogLevel::Info) {</span> |
| <span class="doccomment">//! let x = 3 * 4; // expensive computation</span> |
| <span class="doccomment">//! info!("the answer was: {}", x);</span> |
| <span class="doccomment">//! }</span> |
| <span class="doccomment">//! }</span> |
| <span class="doccomment">//! ```</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! Assumes the binary is `main`:</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ```{.bash}</span> |
| <span class="doccomment">//! $ RUST_LOG=error ./main</span> |
| <span class="doccomment">//! ERROR:main: this is printed by default</span> |
| <span class="doccomment">//! ```</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ```{.bash}</span> |
| <span class="doccomment">//! $ RUST_LOG=info ./main</span> |
| <span class="doccomment">//! ERROR:main: this is printed by default</span> |
| <span class="doccomment">//! INFO:main: the answer was: 12</span> |
| <span class="doccomment">//! ```</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ```{.bash}</span> |
| <span class="doccomment">//! $ RUST_LOG=debug ./main</span> |
| <span class="doccomment">//! DEBUG:main: this is a debug message</span> |
| <span class="doccomment">//! ERROR:main: this is printed by default</span> |
| <span class="doccomment">//! INFO:main: the answer was: 12</span> |
| <span class="doccomment">//! ```</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! You can also set the log level on a per module basis:</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ```{.bash}</span> |
| <span class="doccomment">//! $ RUST_LOG=main=info ./main</span> |
| <span class="doccomment">//! ERROR:main: this is printed by default</span> |
| <span class="doccomment">//! INFO:main: the answer was: 12</span> |
| <span class="doccomment">//! ```</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! And enable all logging:</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ```{.bash}</span> |
| <span class="doccomment">//! $ RUST_LOG=main ./main</span> |
| <span class="doccomment">//! DEBUG:main: this is a debug message</span> |
| <span class="doccomment">//! ERROR:main: this is printed by default</span> |
| <span class="doccomment">//! INFO:main: the answer was: 12</span> |
| <span class="doccomment">//! ```</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! See the documentation for the log crate for more information about its API.</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ## Enabling logging</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! Log levels are controlled on a per-module basis, and by default all logging</span> |
| <span class="doccomment">//! is disabled except for `error!`. Logging is controlled via the `RUST_LOG`</span> |
| <span class="doccomment">//! environment variable. The value of this environment variable is a</span> |
| <span class="doccomment">//! comma-separated list of logging directives. A logging directive is of the</span> |
| <span class="doccomment">//! form:</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ```text</span> |
| <span class="doccomment">//! path::to::module=log_level</span> |
| <span class="doccomment">//! ```</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! The path to the module is rooted in the name of the crate it was compiled</span> |
| <span class="doccomment">//! for, so if your program is contained in a file `hello.rs`, for example, to</span> |
| <span class="doccomment">//! turn on logging for this file you would use a value of `RUST_LOG=hello`.</span> |
| <span class="doccomment">//! Furthermore, this path is a prefix-search, so all modules nested in the</span> |
| <span class="doccomment">//! specified module will also have logging enabled.</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! The actual `log_level` is optional to specify. If omitted, all logging will</span> |
| <span class="doccomment">//! be enabled. If specified, it must be one of the strings `debug`, `error`,</span> |
| <span class="doccomment">//! `info`, `warn`, or `trace`.</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! As the log level for a module is optional, the module to enable logging for</span> |
| <span class="doccomment">//! is also optional. If only a `log_level` is provided, then the global log</span> |
| <span class="doccomment">//! level for all modules is set to this value.</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! Some examples of valid values of `RUST_LOG` are:</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! * `hello` turns on all logging for the 'hello' module</span> |
| <span class="doccomment">//! * `info` turns on all info logging</span> |
| <span class="doccomment">//! * `hello=debug` turns on debug logging for 'hello'</span> |
| <span class="doccomment">//! * `hello,std::option` turns on hello, and std's option logging</span> |
| <span class="doccomment">//! * `error,hello=warn` turn on global error logging and also warn for hello</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ## Filtering results</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! A RUST_LOG directive may include a regex filter. The syntax is to append `/`</span> |
| <span class="doccomment">//! followed by a regex. Each message is checked against the regex, and is only</span> |
| <span class="doccomment">//! logged if it matches. Note that the matching is done after formatting the</span> |
| <span class="doccomment">//! log string but before adding any logging meta-data. There is a single filter</span> |
| <span class="doccomment">//! for all modules.</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! Some examples:</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! * `hello/foo` turns on all logging for the 'hello' module where the log</span> |
| <span class="doccomment">//! message includes 'foo'.</span> |
| <span class="doccomment">//! * `info/f.o` turns on all info logging where the log message includes 'foo',</span> |
| <span class="doccomment">//! 'f1o', 'fao', etc.</span> |
| <span class="doccomment">//! * `hello=debug/foo*foo` turns on debug logging for 'hello' where the log</span> |
| <span class="doccomment">//! message includes 'foofoo' or 'fofoo' or 'fooooooofoo', etc.</span> |
| <span class="doccomment">//! * `error,hello=warn/[0-9] scopes` turn on global error logging and also</span> |
| <span class="doccomment">//! warn for hello. In both cases the log message must include a single digit</span> |
| <span class="doccomment">//! number followed by 'scopes'.</span> |
| |
| <span class="attribute">#<span class="op">!</span>[<span class="ident">doc</span>(<span class="ident">html_logo_url</span> <span class="op">=</span> <span class="string">"http://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png"</span>, |
| <span class="ident">html_favicon_url</span> <span class="op">=</span> <span class="string">"http://www.rust-lang.org/favicon.ico"</span>, |
| <span class="ident">html_root_url</span> <span class="op">=</span> <span class="string">"http://doc.rust-lang.org/env_logger/"</span>)]</span> |
| <span class="attribute">#<span class="op">!</span>[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">deny</span>(<span class="ident">warnings</span>))]</span> |
| |
| <span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">log</span>; |
| |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">env</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::<span class="ident">prelude</span>::<span class="kw-2">*</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">mem</span>; |
| |
| <span class="kw">use</span> <span class="ident">log</span>::{<span class="ident">Log</span>, <span class="ident">LogLevel</span>, <span class="ident">LogLevelFilter</span>, <span class="ident">LogRecord</span>, <span class="ident">SetLoggerError</span>, <span class="ident">LogMetadata</span>}; |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"regex"</span>)]</span> |
| <span class="attribute">#[<span class="ident">path</span> <span class="op">=</span> <span class="string">"regex.rs"</span>]</span> |
| <span class="kw">mod</span> <span class="ident">filter</span>; |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"regex"</span>))]</span> |
| <span class="attribute">#[<span class="ident">path</span> <span class="op">=</span> <span class="string">"string.rs"</span>]</span> |
| <span class="kw">mod</span> <span class="ident">filter</span>; |
| |
| <span class="doccomment">/// The logger.</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Logger</span> { |
| <span class="ident">directives</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">LogDirective</span><span class="op">></span>, |
| <span class="ident">filter</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">filter</span>::<span class="ident">Filter</span><span class="op">></span>, |
| <span class="ident">format</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">LogRecord</span>) <span class="op">-></span> <span class="ident">String</span> <span class="op">+</span> <span class="ident">Sync</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span>, |
| } |
| |
| <span class="doccomment">/// LogBuilder acts as builder for initializing the Logger.</span> |
| <span class="doccomment">/// It can be used to customize the log format, change the enviromental variable used</span> |
| <span class="doccomment">/// to provide the logging directives and also set the default log level filter.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// ## Example</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// ```</span> |
| <span class="doccomment">/// #[macro_use]</span> |
| <span class="doccomment">/// extern crate log;</span> |
| <span class="doccomment">/// extern crate env_logger;</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// use std::env;</span> |
| <span class="doccomment">/// use log::{LogRecord, LogLevelFilter};</span> |
| <span class="doccomment">/// use env_logger::LogBuilder;</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// fn main() {</span> |
| <span class="doccomment">/// let format = |record: &LogRecord| {</span> |
| <span class="doccomment">/// format!("{} - {}", record.level(), record.args())</span> |
| <span class="doccomment">/// };</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// let mut builder = LogBuilder::new();</span> |
| <span class="doccomment">/// builder.format(format).filter(None, LogLevelFilter::Info);</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// if env::var("RUST_LOG").is_ok() {</span> |
| <span class="doccomment">/// builder.parse(&env::var("RUST_LOG").unwrap());</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// builder.init().unwrap();</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// error!("error message");</span> |
| <span class="doccomment">/// info!("info message");</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// ```</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">LogBuilder</span> { |
| <span class="ident">directives</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">LogDirective</span><span class="op">></span>, |
| <span class="ident">filter</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">filter</span>::<span class="ident">Filter</span><span class="op">></span>, |
| <span class="ident">format</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">LogRecord</span>) <span class="op">-></span> <span class="ident">String</span> <span class="op">+</span> <span class="ident">Sync</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span>, |
| } |
| |
| <span class="kw">impl</span> <span class="ident">LogBuilder</span> { |
| <span class="doccomment">/// Initializes the log builder with defaults</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="ident">LogBuilder</span> { |
| <span class="ident">LogBuilder</span> { |
| <span class="ident">directives</span>: <span class="ident">Vec</span>::<span class="ident">new</span>(), |
| <span class="ident">filter</span>: <span class="prelude-val">None</span>, |
| <span class="ident">format</span>: <span class="ident">Box</span>::<span class="ident">new</span>(<span class="op">|</span><span class="ident">record</span>: <span class="kw-2">&</span><span class="ident">LogRecord</span><span class="op">|</span> { |
| <span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}:{}: {}"</span>, <span class="ident">record</span>.<span class="ident">level</span>(), |
| <span class="ident">record</span>.<span class="ident">location</span>().<span class="ident">module_path</span>(), <span class="ident">record</span>.<span class="ident">args</span>()) |
| }), |
| } |
| } |
| |
| <span class="doccomment">/// Adds filters to the logger</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The given module (if any) will log at most the specified level provided.</span> |
| <span class="doccomment">/// If no module is provided then the filter will apply to all log messages.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">filter</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, |
| <span class="ident">module</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span><span class="op">></span>, |
| <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">Self</span> { |
| <span class="self">self</span>.<span class="ident">directives</span>.<span class="ident">push</span>(<span class="ident">LogDirective</span> { |
| <span class="ident">name</span>: <span class="ident">module</span>.<span class="ident">map</span>(<span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="ident">s</span>.<span class="ident">to_string</span>()), |
| <span class="ident">level</span>: <span class="ident">level</span>, |
| }); |
| <span class="self">self</span> |
| } |
| |
| <span class="doccomment">/// Sets the format function for formatting the log output.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This function is called on each record logged to produce a string which</span> |
| <span class="doccomment">/// is actually printed out.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">format</span><span class="op"><</span><span class="ident">F</span>: <span class="lifetime">'static</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">format</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">Self</span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">LogRecord</span>) <span class="op">-></span> <span class="ident">String</span> <span class="op">+</span> <span class="ident">Sync</span> <span class="op">+</span> <span class="ident">Send</span> |
| { |
| <span class="self">self</span>.<span class="ident">format</span> <span class="op">=</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">format</span>); |
| <span class="self">self</span> |
| } |
| |
| <span class="doccomment">/// Parses the directives string in the same form as the RUST_LOG</span> |
| <span class="doccomment">/// environment variable.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// See the module documentation for more details.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">parse</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">filters</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">Self</span> { |
| <span class="kw">let</span> (<span class="ident">directives</span>, <span class="ident">filter</span>) <span class="op">=</span> <span class="ident">parse_logging_spec</span>(<span class="ident">filters</span>); |
| |
| <span class="self">self</span>.<span class="ident">filter</span> <span class="op">=</span> <span class="ident">filter</span>; |
| |
| <span class="kw">for</span> <span class="ident">directive</span> <span class="kw">in</span> <span class="ident">directives</span> { |
| <span class="self">self</span>.<span class="ident">directives</span>.<span class="ident">push</span>(<span class="ident">directive</span>); |
| } |
| <span class="self">self</span> |
| } |
| |
| <span class="doccomment">/// Initializes the global logger with an env logger.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This should be called early in the execution of a Rust program, and the</span> |
| <span class="doccomment">/// global logger may only be initialized once. Future initialization</span> |
| <span class="doccomment">/// attempts will return an error.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">init</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">SetLoggerError</span><span class="op">></span> { |
| <span class="ident">log</span>::<span class="ident">set_logger</span>(<span class="op">|</span><span class="ident">max_level</span><span class="op">|</span> { |
| <span class="kw">let</span> <span class="ident">logger</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">build</span>(); |
| <span class="ident">max_level</span>.<span class="ident">set</span>(<span class="ident">logger</span>.<span class="ident">filter</span>()); |
| <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">logger</span>) |
| }) |
| } |
| |
| <span class="doccomment">/// Build an env logger.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">build</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">Logger</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">directives</span>.<span class="ident">is_empty</span>() { |
| <span class="comment">// Adds the default filter if none exist</span> |
| <span class="self">self</span>.<span class="ident">directives</span>.<span class="ident">push</span>(<span class="ident">LogDirective</span> { |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Error</span>, |
| }); |
| } <span class="kw">else</span> { |
| <span class="comment">// Sort the directives by length of their name, this allows a</span> |
| <span class="comment">// little more efficient lookup at runtime.</span> |
| <span class="self">self</span>.<span class="ident">directives</span>.<span class="ident">sort_by</span>(<span class="op">|</span><span class="ident">a</span>, <span class="ident">b</span><span class="op">|</span> { |
| <span class="kw">let</span> <span class="ident">alen</span> <span class="op">=</span> <span class="ident">a</span>.<span class="ident">name</span>.<span class="ident">as_ref</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">a</span><span class="op">|</span> <span class="ident">a</span>.<span class="ident">len</span>()).<span class="ident">unwrap_or</span>(<span class="number">0</span>); |
| <span class="kw">let</span> <span class="ident">blen</span> <span class="op">=</span> <span class="ident">b</span>.<span class="ident">name</span>.<span class="ident">as_ref</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">b</span><span class="op">|</span> <span class="ident">b</span>.<span class="ident">len</span>()).<span class="ident">unwrap_or</span>(<span class="number">0</span>); |
| <span class="ident">alen</span>.<span class="ident">cmp</span>(<span class="kw-2">&</span><span class="ident">blen</span>) |
| }); |
| } |
| |
| <span class="ident">Logger</span> { |
| <span class="ident">directives</span>: <span class="ident">mem</span>::<span class="ident">replace</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">directives</span>, <span class="ident">Vec</span>::<span class="ident">new</span>()), |
| <span class="ident">filter</span>: <span class="ident">mem</span>::<span class="ident">replace</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">filter</span>, <span class="prelude-val">None</span>), |
| <span class="ident">format</span>: <span class="ident">mem</span>::<span class="ident">replace</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">format</span>, <span class="ident">Box</span>::<span class="ident">new</span>(<span class="op">|</span>_<span class="op">|</span> <span class="ident">String</span>::<span class="ident">new</span>())), |
| } |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Logger</span> { |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="ident">Logger</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">builder</span> <span class="op">=</span> <span class="ident">LogBuilder</span>::<span class="ident">new</span>(); |
| |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">s</span>) <span class="op">=</span> <span class="ident">env</span>::<span class="ident">var</span>(<span class="string">"RUST_LOG"</span>) { |
| <span class="ident">builder</span>.<span class="ident">parse</span>(<span class="kw-2">&</span><span class="ident">s</span>); |
| } |
| |
| <span class="ident">builder</span>.<span class="ident">build</span>() |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">filter</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">LogLevelFilter</span> { |
| <span class="self">self</span>.<span class="ident">directives</span>.<span class="ident">iter</span>() |
| .<span class="ident">map</span>(<span class="op">|</span><span class="ident">d</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">level</span>).<span class="ident">max</span>() |
| .<span class="ident">unwrap_or</span>(<span class="ident">LogLevelFilter</span>::<span class="ident">Off</span>) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">enabled</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">level</span>: <span class="ident">LogLevel</span>, <span class="ident">target</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="comment">// Search for the longest match, the vector is assumed to be pre-sorted.</span> |
| <span class="kw">for</span> <span class="ident">directive</span> <span class="kw">in</span> <span class="self">self</span>.<span class="ident">directives</span>.<span class="ident">iter</span>().<span class="ident">rev</span>() { |
| <span class="kw">match</span> <span class="ident">directive</span>.<span class="ident">name</span> { |
| <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="ident">name</span>) <span class="kw">if</span> <span class="op">!</span><span class="ident">target</span>.<span class="ident">starts_with</span>(<span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">name</span>) <span class="op">=></span> {}, |
| <span class="prelude-val">Some</span>(..) <span class="op">|</span> <span class="prelude-val">None</span> <span class="op">=></span> { |
| <span class="kw">return</span> <span class="ident">level</span> <span class="op"><=</span> <span class="ident">directive</span>.<span class="ident">level</span> |
| } |
| } |
| } |
| <span class="bool-val">false</span> |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Log</span> <span class="kw">for</span> <span class="ident">Logger</span> { |
| <span class="kw">fn</span> <span class="ident">enabled</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">metadata</span>: <span class="kw-2">&</span><span class="ident">LogMetadata</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="self">self</span>.<span class="ident">enabled</span>(<span class="ident">metadata</span>.<span class="ident">level</span>(), <span class="ident">metadata</span>.<span class="ident">target</span>()) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">log</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">record</span>: <span class="kw-2">&</span><span class="ident">LogRecord</span>) { |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">Log</span>::<span class="ident">enabled</span>(<span class="self">self</span>, <span class="ident">record</span>.<span class="ident">metadata</span>()) { |
| <span class="kw">return</span>; |
| } |
| |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">filter</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">filter</span>.<span class="ident">as_ref</span>() { |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">filter</span>.<span class="ident">is_match</span>(<span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">record</span>.<span class="ident">args</span>().<span class="ident">to_string</span>()) { |
| <span class="kw">return</span>; |
| } |
| } |
| |
| <span class="kw">let</span> _ <span class="op">=</span> <span class="macro">writeln</span><span class="macro">!</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">io</span>::<span class="ident">stderr</span>(), <span class="string">"{}"</span>, (<span class="self">self</span>.<span class="ident">format</span>)(<span class="ident">record</span>)); |
| } |
| } |
| |
| <span class="kw">struct</span> <span class="ident">LogDirective</span> { |
| <span class="ident">name</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>, |
| <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>, |
| } |
| |
| <span class="doccomment">/// Initializes the global logger with an env logger.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This should be called early in the execution of a Rust program, and the</span> |
| <span class="doccomment">/// global logger may only be initialized once. Future initialization attempts</span> |
| <span class="doccomment">/// will return an error.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">init</span>() <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">SetLoggerError</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">builder</span> <span class="op">=</span> <span class="ident">LogBuilder</span>::<span class="ident">new</span>(); |
| |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">s</span>) <span class="op">=</span> <span class="ident">env</span>::<span class="ident">var</span>(<span class="string">"RUST_LOG"</span>) { |
| <span class="ident">builder</span>.<span class="ident">parse</span>(<span class="kw-2">&</span><span class="ident">s</span>); |
| } |
| |
| <span class="ident">builder</span>.<span class="ident">init</span>() |
| } |
| |
| <span class="doccomment">/// Parse a logging specification string (e.g: "crate1,crate2::mod3,crate3::x=error/foo")</span> |
| <span class="doccomment">/// and return a vector with log directives.</span> |
| <span class="kw">fn</span> <span class="ident">parse_logging_spec</span>(<span class="ident">spec</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> (<span class="ident">Vec</span><span class="op"><</span><span class="ident">LogDirective</span><span class="op">></span>, <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">filter</span>::<span class="ident">Filter</span><span class="op">></span>) { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">dirs</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">new</span>(); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">parts</span> <span class="op">=</span> <span class="ident">spec</span>.<span class="ident">split</span>(<span class="string">'/'</span>); |
| <span class="kw">let</span> <span class="ident">mods</span> <span class="op">=</span> <span class="ident">parts</span>.<span class="ident">next</span>(); |
| <span class="kw">let</span> <span class="ident">filter</span> <span class="op">=</span> <span class="ident">parts</span>.<span class="ident">next</span>(); |
| <span class="kw">if</span> <span class="ident">parts</span>.<span class="ident">next</span>().<span class="ident">is_some</span>() { |
| <span class="macro">println</span><span class="macro">!</span>(<span class="string">"warning: invalid logging spec '{}', \ |
| ignoring it (too many '/'s)"</span>, <span class="ident">spec</span>); |
| <span class="kw">return</span> (<span class="ident">dirs</span>, <span class="prelude-val">None</span>); |
| } |
| <span class="ident">mods</span>.<span class="ident">map</span>(<span class="op">|</span><span class="ident">m</span><span class="op">|</span> { <span class="kw">for</span> <span class="ident">s</span> <span class="kw">in</span> <span class="ident">m</span>.<span class="ident">split</span>(<span class="string">','</span>) { |
| <span class="kw">if</span> <span class="ident">s</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="number">0</span> { <span class="kw">continue</span> } |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">parts</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">split</span>(<span class="string">'='</span>); |
| <span class="kw">let</span> (<span class="ident">log_level</span>, <span class="ident">name</span>) <span class="op">=</span> <span class="kw">match</span> (<span class="ident">parts</span>.<span class="ident">next</span>(), <span class="ident">parts</span>.<span class="ident">next</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="ident">s</span>.<span class="ident">trim</span>()), <span class="ident">parts</span>.<span class="ident">next</span>()) { |
| (<span class="prelude-val">Some</span>(<span class="ident">part0</span>), <span class="prelude-val">None</span>, <span class="prelude-val">None</span>) <span class="op">=></span> { |
| <span class="comment">// if the single argument is a log-level string or number,</span> |
| <span class="comment">// treat that as a global fallback</span> |
| <span class="kw">match</span> <span class="ident">part0</span>.<span class="ident">parse</span>() { |
| <span class="prelude-val">Ok</span>(<span class="ident">num</span>) <span class="op">=></span> (<span class="ident">num</span>, <span class="prelude-val">None</span>), |
| <span class="prelude-val">Err</span>(_) <span class="op">=></span> (<span class="ident">LogLevelFilter</span>::<span class="ident">max</span>(), <span class="prelude-val">Some</span>(<span class="ident">part0</span>)), |
| } |
| } |
| (<span class="prelude-val">Some</span>(<span class="ident">part0</span>), <span class="prelude-val">Some</span>(<span class="string">""</span>), <span class="prelude-val">None</span>) <span class="op">=></span> (<span class="ident">LogLevelFilter</span>::<span class="ident">max</span>(), <span class="prelude-val">Some</span>(<span class="ident">part0</span>)), |
| (<span class="prelude-val">Some</span>(<span class="ident">part0</span>), <span class="prelude-val">Some</span>(<span class="ident">part1</span>), <span class="prelude-val">None</span>) <span class="op">=></span> { |
| <span class="kw">match</span> <span class="ident">part1</span>.<span class="ident">parse</span>() { |
| <span class="prelude-val">Ok</span>(<span class="ident">num</span>) <span class="op">=></span> (<span class="ident">num</span>, <span class="prelude-val">Some</span>(<span class="ident">part0</span>)), |
| _ <span class="op">=></span> { |
| <span class="macro">println</span><span class="macro">!</span>(<span class="string">"warning: invalid logging spec '{}', \ |
| ignoring it"</span>, <span class="ident">part1</span>); |
| <span class="kw">continue</span> |
| } |
| } |
| }, |
| _ <span class="op">=></span> { |
| <span class="macro">println</span><span class="macro">!</span>(<span class="string">"warning: invalid logging spec '{}', \ |
| ignoring it"</span>, <span class="ident">s</span>); |
| <span class="kw">continue</span> |
| } |
| }; |
| <span class="ident">dirs</span>.<span class="ident">push</span>(<span class="ident">LogDirective</span> { |
| <span class="ident">name</span>: <span class="ident">name</span>.<span class="ident">map</span>(<span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="ident">s</span>.<span class="ident">to_string</span>()), |
| <span class="ident">level</span>: <span class="ident">log_level</span>, |
| }); |
| }}); |
| |
| <span class="kw">let</span> <span class="ident">filter</span> <span class="op">=</span> <span class="ident">filter</span>.<span class="ident">map_or</span>(<span class="prelude-val">None</span>, <span class="op">|</span><span class="ident">filter</span><span class="op">|</span> { |
| <span class="kw">match</span> <span class="ident">filter</span>::<span class="ident">Filter</span>::<span class="ident">new</span>(<span class="ident">filter</span>) { |
| <span class="prelude-val">Ok</span>(<span class="ident">re</span>) <span class="op">=></span> <span class="prelude-val">Some</span>(<span class="ident">re</span>), |
| <span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> { |
| <span class="macro">println</span><span class="macro">!</span>(<span class="string">"warning: invalid regex filter - {}"</span>, <span class="ident">e</span>); |
| <span class="prelude-val">None</span> |
| } |
| } |
| }); |
| |
| <span class="kw">return</span> (<span class="ident">dirs</span>, <span class="ident">filter</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> |
| <span class="kw">mod</span> <span class="ident">tests</span> { |
| <span class="kw">use</span> <span class="ident">log</span>::{<span class="ident">LogLevel</span>, <span class="ident">LogLevelFilter</span>}; |
| |
| <span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">LogBuilder</span>, <span class="ident">Logger</span>, <span class="ident">LogDirective</span>, <span class="ident">parse_logging_spec</span>}; |
| |
| <span class="kw">fn</span> <span class="ident">make_logger</span>(<span class="ident">dirs</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">LogDirective</span><span class="op">></span>) <span class="op">-></span> <span class="ident">Logger</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">logger</span> <span class="op">=</span> <span class="ident">LogBuilder</span>::<span class="ident">new</span>().<span class="ident">build</span>(); |
| <span class="ident">logger</span>.<span class="ident">directives</span> <span class="op">=</span> <span class="ident">dirs</span>; |
| <span class="ident">logger</span> |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">filter_info</span>() { |
| <span class="kw">let</span> <span class="ident">logger</span> <span class="op">=</span> <span class="ident">LogBuilder</span>::<span class="ident">new</span>().<span class="ident">filter</span>(<span class="prelude-val">None</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">Info</span>).<span class="ident">build</span>(); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Info</span>, <span class="string">"crate1"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Debug</span>, <span class="string">"crate1"</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">filter_beginning_longest_match</span>() { |
| <span class="kw">let</span> <span class="ident">logger</span> <span class="op">=</span> <span class="ident">LogBuilder</span>::<span class="ident">new</span>() |
| .<span class="ident">filter</span>(<span class="prelude-val">Some</span>(<span class="string">"crate2"</span>), <span class="ident">LogLevelFilter</span>::<span class="ident">Info</span>) |
| .<span class="ident">filter</span>(<span class="prelude-val">Some</span>(<span class="string">"crate2::mod"</span>), <span class="ident">LogLevelFilter</span>::<span class="ident">Debug</span>) |
| .<span class="ident">filter</span>(<span class="prelude-val">Some</span>(<span class="string">"crate1::mod1"</span>), <span class="ident">LogLevelFilter</span>::<span class="ident">Warn</span>) |
| .<span class="ident">build</span>(); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Debug</span>, <span class="string">"crate2::mod1"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Debug</span>, <span class="string">"crate2"</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">parse_default</span>() { |
| <span class="kw">let</span> <span class="ident">logger</span> <span class="op">=</span> <span class="ident">LogBuilder</span>::<span class="ident">new</span>().<span class="ident">parse</span>(<span class="string">"info,crate1::mod1=warn"</span>).<span class="ident">build</span>(); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Warn</span>, <span class="string">"crate1::mod1"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Info</span>, <span class="string">"crate2::mod2"</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">match_full_path</span>() { |
| <span class="kw">let</span> <span class="ident">logger</span> <span class="op">=</span> <span class="ident">make_logger</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">LogDirective</span> { |
| <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>()), |
| <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Info</span> |
| }, |
| <span class="ident">LogDirective</span> { |
| <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"crate1::mod1"</span>.<span class="ident">to_string</span>()), |
| <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Warn</span> |
| } |
| ]); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Warn</span>, <span class="string">"crate1::mod1"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Info</span>, <span class="string">"crate1::mod1"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Info</span>, <span class="string">"crate2"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Debug</span>, <span class="string">"crate2"</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">no_match</span>() { |
| <span class="kw">let</span> <span class="ident">logger</span> <span class="op">=</span> <span class="ident">make_logger</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">LogDirective</span> { <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>()), <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Info</span> }, |
| <span class="ident">LogDirective</span> { <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"crate1::mod1"</span>.<span class="ident">to_string</span>()), <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Warn</span> } |
| ]); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Warn</span>, <span class="string">"crate3"</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">match_beginning</span>() { |
| <span class="kw">let</span> <span class="ident">logger</span> <span class="op">=</span> <span class="ident">make_logger</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">LogDirective</span> { <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>()), <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Info</span> }, |
| <span class="ident">LogDirective</span> { <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"crate1::mod1"</span>.<span class="ident">to_string</span>()), <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Warn</span> } |
| ]); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Info</span>, <span class="string">"crate2::mod1"</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">match_beginning_longest_match</span>() { |
| <span class="kw">let</span> <span class="ident">logger</span> <span class="op">=</span> <span class="ident">make_logger</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">LogDirective</span> { <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>()), <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Info</span> }, |
| <span class="ident">LogDirective</span> { <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"crate2::mod"</span>.<span class="ident">to_string</span>()), <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Debug</span> }, |
| <span class="ident">LogDirective</span> { <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"crate1::mod1"</span>.<span class="ident">to_string</span>()), <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Warn</span> } |
| ]); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Debug</span>, <span class="string">"crate2::mod1"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Debug</span>, <span class="string">"crate2"</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">match_default</span>() { |
| <span class="kw">let</span> <span class="ident">logger</span> <span class="op">=</span> <span class="ident">make_logger</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">LogDirective</span> { <span class="ident">name</span>: <span class="prelude-val">None</span>, <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Info</span> }, |
| <span class="ident">LogDirective</span> { <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"crate1::mod1"</span>.<span class="ident">to_string</span>()), <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Warn</span> } |
| ]); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Warn</span>, <span class="string">"crate1::mod1"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Info</span>, <span class="string">"crate2::mod2"</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">zero_level</span>() { |
| <span class="kw">let</span> <span class="ident">logger</span> <span class="op">=</span> <span class="ident">make_logger</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">LogDirective</span> { <span class="ident">name</span>: <span class="prelude-val">None</span>, <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Info</span> }, |
| <span class="ident">LogDirective</span> { <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"crate1::mod1"</span>.<span class="ident">to_string</span>()), <span class="ident">level</span>: <span class="ident">LogLevelFilter</span>::<span class="ident">Off</span> } |
| ]); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Error</span>, <span class="string">"crate1::mod1"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">logger</span>.<span class="ident">enabled</span>(<span class="ident">LogLevel</span>::<span class="ident">Info</span>, <span class="string">"crate2::mod2"</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">parse_logging_spec_valid</span>() { |
| <span class="kw">let</span> (<span class="ident">dirs</span>, <span class="ident">filter</span>) <span class="op">=</span> <span class="ident">parse_logging_spec</span>(<span class="string">"crate1::mod1=error,crate1::mod2,crate2=debug"</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>.<span class="ident">len</span>(), <span class="number">3</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate1::mod1"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">Error</span>); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">1</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate1::mod2"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">1</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">max</span>()); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">2</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">2</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">Debug</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">filter</span>.<span class="ident">is_none</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">parse_logging_spec_invalid_crate</span>() { |
| <span class="comment">// test parse_logging_spec with multiple = in specification</span> |
| <span class="kw">let</span> (<span class="ident">dirs</span>, <span class="ident">filter</span>) <span class="op">=</span> <span class="ident">parse_logging_spec</span>(<span class="string">"crate1::mod1=warn=info,crate2=debug"</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>.<span class="ident">len</span>(), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">Debug</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">filter</span>.<span class="ident">is_none</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">parse_logging_spec_invalid_log_level</span>() { |
| <span class="comment">// test parse_logging_spec with 'noNumber' as log level</span> |
| <span class="kw">let</span> (<span class="ident">dirs</span>, <span class="ident">filter</span>) <span class="op">=</span> <span class="ident">parse_logging_spec</span>(<span class="string">"crate1::mod1=noNumber,crate2=debug"</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>.<span class="ident">len</span>(), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">Debug</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">filter</span>.<span class="ident">is_none</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">parse_logging_spec_string_log_level</span>() { |
| <span class="comment">// test parse_logging_spec with 'warn' as log level</span> |
| <span class="kw">let</span> (<span class="ident">dirs</span>, <span class="ident">filter</span>) <span class="op">=</span> <span class="ident">parse_logging_spec</span>(<span class="string">"crate1::mod1=wrong,crate2=warn"</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>.<span class="ident">len</span>(), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">Warn</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">filter</span>.<span class="ident">is_none</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">parse_logging_spec_empty_log_level</span>() { |
| <span class="comment">// test parse_logging_spec with '' as log level</span> |
| <span class="kw">let</span> (<span class="ident">dirs</span>, <span class="ident">filter</span>) <span class="op">=</span> <span class="ident">parse_logging_spec</span>(<span class="string">"crate1::mod1=wrong,crate2="</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>.<span class="ident">len</span>(), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">max</span>()); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">filter</span>.<span class="ident">is_none</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">parse_logging_spec_global</span>() { |
| <span class="comment">// test parse_logging_spec with no crate</span> |
| <span class="kw">let</span> (<span class="ident">dirs</span>, <span class="ident">filter</span>) <span class="op">=</span> <span class="ident">parse_logging_spec</span>(<span class="string">"warn,crate2=debug"</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>.<span class="ident">len</span>(), <span class="number">2</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">name</span>, <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">Warn</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">1</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">1</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">Debug</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">filter</span>.<span class="ident">is_none</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">parse_logging_spec_valid_filter</span>() { |
| <span class="kw">let</span> (<span class="ident">dirs</span>, <span class="ident">filter</span>) <span class="op">=</span> <span class="ident">parse_logging_spec</span>(<span class="string">"crate1::mod1=error,crate1::mod2,crate2=debug/abc"</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>.<span class="ident">len</span>(), <span class="number">3</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate1::mod1"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">Error</span>); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">1</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate1::mod2"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">1</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">max</span>()); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">2</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">2</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">Debug</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">filter</span>.<span class="ident">is_some</span>() <span class="op">&&</span> <span class="ident">filter</span>.<span class="ident">unwrap</span>().<span class="ident">to_string</span>() <span class="op">==</span> <span class="string">"abc"</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">parse_logging_spec_invalid_crate_filter</span>() { |
| <span class="kw">let</span> (<span class="ident">dirs</span>, <span class="ident">filter</span>) <span class="op">=</span> <span class="ident">parse_logging_spec</span>(<span class="string">"crate1::mod1=error=warn,crate2=debug/a.c"</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>.<span class="ident">len</span>(), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate2"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">Debug</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">filter</span>.<span class="ident">is_some</span>() <span class="op">&&</span> <span class="ident">filter</span>.<span class="ident">unwrap</span>().<span class="ident">to_string</span>() <span class="op">==</span> <span class="string">"a.c"</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">parse_logging_spec_empty_with_filter</span>() { |
| <span class="kw">let</span> (<span class="ident">dirs</span>, <span class="ident">filter</span>) <span class="op">=</span> <span class="ident">parse_logging_spec</span>(<span class="string">"crate1/a*c"</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>.<span class="ident">len</span>(), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">name</span>, <span class="prelude-val">Some</span>(<span class="string">"crate1"</span>.<span class="ident">to_string</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dirs</span>[<span class="number">0</span>].<span class="ident">level</span>, <span class="ident">LogLevelFilter</span>::<span class="ident">max</span>()); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">filter</span>.<span class="ident">is_some</span>() <span class="op">&&</span> <span class="ident">filter</span>.<span class="ident">unwrap</span>().<span class="ident">to_string</span>() <span class="op">==</span> <span class="string">"a*c"</span>); |
| } |
| } |
| </pre> |
| </section> |
| <section id='search' class="content hidden"></section> |
| |
| <section class="footer"></section> |
| |
| <aside id="help" class="hidden"> |
| <div> |
| <h1 class="hidden">Help</h1> |
| |
| <div class="shortcuts"> |
| <h2>Keyboard Shortcuts</h2> |
| |
| <dl> |
| <dt>?</dt> |
| <dd>Show this help dialog</dd> |
| <dt>S</dt> |
| <dd>Focus the search field</dd> |
| <dt>⇤</dt> |
| <dd>Move up in search results</dd> |
| <dt>⇥</dt> |
| <dd>Move down in search results</dd> |
| <dt>⏎</dt> |
| <dd>Go to active search result</dd> |
| <dt>+</dt> |
| <dd>Collapse/expand all sections</dd> |
| </dl> |
| </div> |
| |
| <div class="infos"> |
| <h2>Search Tricks</h2> |
| |
| <p> |
| Prefix searches with a type followed by a colon (e.g. |
| <code>fn:</code>) to restrict the search to a given type. |
| </p> |
| |
| <p> |
| Accepted types are: <code>fn</code>, <code>mod</code>, |
| <code>struct</code>, <code>enum</code>, |
| <code>trait</code>, <code>type</code>, <code>macro</code>, |
| and <code>const</code>. |
| </p> |
| |
| <p> |
| Search functions by type signature (e.g. |
| <code>vec -> usize</code> or <code>* -> vec</code>) |
| </p> |
| </div> |
| </div> |
| </aside> |
| |
| |
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| window.rootPath = "../../"; |
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