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| <span id="652">652</span> |
| </pre><pre class="rust"><code><span class="doccomment">//! Formatting for log records. |
| //! |
| //! This module contains a [`Formatter`] that can be used to format log records |
| //! into without needing temporary allocations. Usually you won't need to worry |
| //! about the contents of this module and can use the `Formatter` like an ordinary |
| //! [`Write`]. |
| //! |
| //! # Formatting log records |
| //! |
| //! The format used to print log records can be customised using the [`Builder::format`] |
| //! method. |
| //! Custom formats can apply different color and weight to printed values using |
| //! [`Style`] builders. |
| //! |
| //! ``` |
| //! use std::io::Write; |
| //! |
| //! let mut builder = env_logger::Builder::new(); |
| //! |
| //! builder.format(|buf, record| { |
| //! writeln!(buf, "{}: {}", |
| //! record.level(), |
| //! record.args()) |
| //! }); |
| //! ``` |
| //! |
| //! [`Formatter`]: struct.Formatter.html |
| //! [`Style`]: struct.Style.html |
| //! [`Builder::format`]: ../struct.Builder.html#method.format |
| //! [`Write`]: https://doc.rust-lang.org/stable/std/io/trait.Write.html |
| |
| </span><span class="kw">use </span>std::cell::RefCell; |
| <span class="kw">use </span>std::fmt::Display; |
| <span class="kw">use </span>std::io::prelude::<span class="kw-2">*</span>; |
| <span class="kw">use </span>std::rc::Rc; |
| <span class="kw">use </span>std::{fmt, io, mem}; |
| |
| <span class="kw">use </span>log::Record; |
| |
| <span class="kw">mod </span>humantime; |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">mod </span>writer; |
| |
| <span class="kw">pub use </span><span class="self">self</span>::humantime::glob::<span class="kw-2">*</span>; |
| <span class="kw">pub use </span><span class="self">self</span>::writer::glob::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span><span class="self">self</span>::writer::{Buffer, Writer}; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">mod </span>glob { |
| <span class="kw">pub use super</span>::{Target, TimestampPrecision, WriteStyle}; |
| } |
| |
| <span class="doccomment">/// Formatting precision of timestamps. |
| /// |
| /// Seconds give precision of full seconds, milliseconds give thousands of a |
| /// second (3 decimal digits), microseconds are millionth of a second (6 decimal |
| /// digits) and nanoseconds are billionth of a second (9 decimal digits). |
| </span><span class="attribute">#[derive(Copy, Clone, Debug)] |
| </span><span class="kw">pub enum </span>TimestampPrecision { |
| <span class="doccomment">/// Full second precision (0 decimal digits) |
| </span>Seconds, |
| <span class="doccomment">/// Millisecond precision (3 decimal digits) |
| </span>Millis, |
| <span class="doccomment">/// Microsecond precision (6 decimal digits) |
| </span>Micros, |
| <span class="doccomment">/// Nanosecond precision (9 decimal digits) |
| </span>Nanos, |
| } |
| |
| <span class="doccomment">/// The default timestamp precision is seconds. |
| </span><span class="kw">impl </span>Default <span class="kw">for </span>TimestampPrecision { |
| <span class="kw">fn </span>default() -> <span class="self">Self </span>{ |
| TimestampPrecision::Seconds |
| } |
| } |
| |
| <span class="doccomment">/// A formatter to write logs into. |
| /// |
| /// `Formatter` implements the standard [`Write`] trait for writing log records. |
| /// It also supports terminal colors, through the [`style`] method. |
| /// |
| /// # Examples |
| /// |
| /// Use the [`writeln`] macro to format a log record. |
| /// An instance of a `Formatter` is passed to an `env_logger` format as `buf`: |
| /// |
| /// ``` |
| /// use std::io::Write; |
| /// |
| /// let mut builder = env_logger::Builder::new(); |
| /// |
| /// builder.format(|buf, record| writeln!(buf, "{}: {}", record.level(), record.args())); |
| /// ``` |
| /// |
| /// [`Write`]: https://doc.rust-lang.org/stable/std/io/trait.Write.html |
| /// [`writeln`]: https://doc.rust-lang.org/stable/std/macro.writeln.html |
| /// [`style`]: #method.style |
| </span><span class="kw">pub struct </span>Formatter { |
| buf: Rc<RefCell<Buffer>>, |
| write_style: WriteStyle, |
| } |
| |
| <span class="kw">impl </span>Formatter { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new(writer: <span class="kw-2">&</span>Writer) -> <span class="self">Self </span>{ |
| Formatter { |
| buf: Rc::new(RefCell::new(writer.buffer())), |
| write_style: writer.write_style(), |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>write_style(<span class="kw-2">&</span><span class="self">self</span>) -> WriteStyle { |
| <span class="self">self</span>.write_style |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>print(<span class="kw-2">&</span><span class="self">self</span>, writer: <span class="kw-2">&</span>Writer) -> io::Result<()> { |
| writer.print(<span class="kw-2">&</span><span class="self">self</span>.buf.borrow()) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>clear(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.buf.borrow_mut().clear() |
| } |
| } |
| |
| <span class="kw">impl </span>Write <span class="kw">for </span>Formatter { |
| <span class="kw">fn </span>write(<span class="kw-2">&mut </span><span class="self">self</span>, buf: <span class="kw-2">&</span>[u8]) -> io::Result<usize> { |
| <span class="self">self</span>.buf.borrow_mut().write(buf) |
| } |
| |
| <span class="kw">fn </span>flush(<span class="kw-2">&mut </span><span class="self">self</span>) -> io::Result<()> { |
| <span class="self">self</span>.buf.borrow_mut().flush() |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>Formatter { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| f.debug_struct(<span class="string">"Formatter"</span>).finish() |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">type </span>FormatFn = Box<<span class="kw">dyn </span>Fn(<span class="kw-2">&mut </span>Formatter, <span class="kw-2">&</span>Record) -> io::Result<()> + Sync + Send>; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Builder { |
| <span class="kw">pub </span>format_timestamp: <span class="prelude-ty">Option</span><TimestampPrecision>, |
| <span class="kw">pub </span>format_module_path: bool, |
| <span class="kw">pub </span>format_target: bool, |
| <span class="kw">pub </span>format_level: bool, |
| <span class="kw">pub </span>format_indent: <span class="prelude-ty">Option</span><usize>, |
| <span class="kw">pub </span>custom_format: <span class="prelude-ty">Option</span><FormatFn>, |
| <span class="kw">pub </span>format_suffix: <span class="kw-2">&</span><span class="lifetime">'static </span>str, |
| built: bool, |
| } |
| |
| <span class="kw">impl </span>Default <span class="kw">for </span>Builder { |
| <span class="kw">fn </span>default() -> <span class="self">Self </span>{ |
| Builder { |
| format_timestamp: <span class="prelude-val">Some</span>(Default::default()), |
| format_module_path: <span class="bool-val">false</span>, |
| format_target: <span class="bool-val">true</span>, |
| format_level: <span class="bool-val">true</span>, |
| format_indent: <span class="prelude-val">Some</span>(<span class="number">4</span>), |
| custom_format: <span class="prelude-val">None</span>, |
| format_suffix: <span class="string">"\n"</span>, |
| built: <span class="bool-val">false</span>, |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>Builder { |
| <span class="doccomment">/// Convert the format into a callable function. |
| /// |
| /// If the `custom_format` is `Some`, then any `default_format` switches are ignored. |
| /// If the `custom_format` is `None`, then a default format is returned. |
| /// Any `default_format` switches set to `false` won't be written by the format. |
| </span><span class="kw">pub fn </span>build(<span class="kw-2">&mut </span><span class="self">self</span>) -> FormatFn { |
| <span class="macro">assert!</span>(!<span class="self">self</span>.built, <span class="string">"attempt to re-use consumed builder"</span>); |
| |
| <span class="kw">let </span>built = mem::replace( |
| <span class="self">self</span>, |
| Builder { |
| built: <span class="bool-val">true</span>, |
| ..Default::default() |
| }, |
| ); |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(fmt) = built.custom_format { |
| fmt |
| } <span class="kw">else </span>{ |
| Box::new(<span class="kw">move </span>|buf, record| { |
| <span class="kw">let </span>fmt = DefaultFormat { |
| timestamp: built.format_timestamp, |
| module_path: built.format_module_path, |
| target: built.format_target, |
| level: built.format_level, |
| written_header_value: <span class="bool-val">false</span>, |
| indent: built.format_indent, |
| suffix: built.format_suffix, |
| buf, |
| }; |
| |
| fmt.write(record) |
| }) |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"termcolor"</span>)] |
| </span><span class="kw">type </span>SubtleStyle = StyledValue<<span class="lifetime">'static</span>, <span class="kw-2">&</span><span class="lifetime">'static </span>str>; |
| <span class="attribute">#[cfg(not(feature = <span class="string">"termcolor"</span>))] |
| </span><span class="kw">type </span>SubtleStyle = <span class="kw-2">&</span><span class="lifetime">'static </span>str; |
| |
| <span class="doccomment">/// The default format. |
| /// |
| /// This format needs to work with any combination of crate features. |
| </span><span class="kw">struct </span>DefaultFormat<<span class="lifetime">'a</span>> { |
| timestamp: <span class="prelude-ty">Option</span><TimestampPrecision>, |
| module_path: bool, |
| target: bool, |
| level: bool, |
| written_header_value: bool, |
| indent: <span class="prelude-ty">Option</span><usize>, |
| buf: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>Formatter, |
| suffix: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> DefaultFormat<<span class="lifetime">'a</span>> { |
| <span class="kw">fn </span>write(<span class="kw-2">mut </span><span class="self">self</span>, record: <span class="kw-2">&</span>Record) -> io::Result<()> { |
| <span class="self">self</span>.write_timestamp()<span class="question-mark">?</span>; |
| <span class="self">self</span>.write_level(record)<span class="question-mark">?</span>; |
| <span class="self">self</span>.write_module_path(record)<span class="question-mark">?</span>; |
| <span class="self">self</span>.write_target(record)<span class="question-mark">?</span>; |
| <span class="self">self</span>.finish_header()<span class="question-mark">?</span>; |
| |
| <span class="self">self</span>.write_args(record) |
| } |
| |
| <span class="kw">fn </span>subtle_style(<span class="kw-2">&</span><span class="self">self</span>, text: <span class="kw-2">&</span><span class="lifetime">'static </span>str) -> SubtleStyle { |
| <span class="attribute">#[cfg(feature = <span class="string">"termcolor"</span>)] |
| </span>{ |
| <span class="self">self</span>.buf |
| .style() |
| .set_color(Color::Black) |
| .set_intense(<span class="bool-val">true</span>) |
| .clone() |
| .into_value(text) |
| } |
| <span class="attribute">#[cfg(not(feature = <span class="string">"termcolor"</span>))] |
| </span>{ |
| text |
| } |
| } |
| |
| <span class="kw">fn </span>write_header_value<T>(<span class="kw-2">&mut </span><span class="self">self</span>, value: T) -> io::Result<()> |
| <span class="kw">where |
| </span>T: Display, |
| { |
| <span class="kw">if </span>!<span class="self">self</span>.written_header_value { |
| <span class="self">self</span>.written_header_value = <span class="bool-val">true</span>; |
| |
| <span class="kw">let </span>open_brace = <span class="self">self</span>.subtle_style(<span class="string">"["</span>); |
| <span class="macro">write!</span>(<span class="self">self</span>.buf, <span class="string">"{}{}"</span>, open_brace, value) |
| } <span class="kw">else </span>{ |
| <span class="macro">write!</span>(<span class="self">self</span>.buf, <span class="string">" {}"</span>, value) |
| } |
| } |
| |
| <span class="kw">fn </span>write_level(<span class="kw-2">&mut </span><span class="self">self</span>, record: <span class="kw-2">&</span>Record) -> io::Result<()> { |
| <span class="kw">if </span>!<span class="self">self</span>.level { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(()); |
| } |
| |
| <span class="kw">let </span>level = { |
| <span class="attribute">#[cfg(feature = <span class="string">"termcolor"</span>)] |
| </span>{ |
| <span class="self">self</span>.buf.default_styled_level(record.level()) |
| } |
| <span class="attribute">#[cfg(not(feature = <span class="string">"termcolor"</span>))] |
| </span>{ |
| record.level() |
| } |
| }; |
| |
| <span class="self">self</span>.write_header_value(<span class="macro">format_args!</span>(<span class="string">"{:<5}"</span>, level)) |
| } |
| |
| <span class="kw">fn </span>write_timestamp(<span class="kw-2">&mut </span><span class="self">self</span>) -> io::Result<()> { |
| <span class="attribute">#[cfg(feature = <span class="string">"humantime"</span>)] |
| </span>{ |
| <span class="kw">use </span><span class="self">self</span>::TimestampPrecision::<span class="kw-2">*</span>; |
| <span class="kw">let </span>ts = <span class="kw">match </span><span class="self">self</span>.timestamp { |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Ok</span>(()), |
| <span class="prelude-val">Some</span>(Seconds) => <span class="self">self</span>.buf.timestamp_seconds(), |
| <span class="prelude-val">Some</span>(Millis) => <span class="self">self</span>.buf.timestamp_millis(), |
| <span class="prelude-val">Some</span>(Micros) => <span class="self">self</span>.buf.timestamp_micros(), |
| <span class="prelude-val">Some</span>(Nanos) => <span class="self">self</span>.buf.timestamp_nanos(), |
| }; |
| |
| <span class="self">self</span>.write_header_value(ts) |
| } |
| <span class="attribute">#[cfg(not(feature = <span class="string">"humantime"</span>))] |
| </span>{ |
| <span class="comment">// Trick the compiler to think we have used self.timestamp |
| // Workaround for "field is never used: `timestamp`" compiler nag. |
| </span><span class="kw">let _ </span>= <span class="self">self</span>.timestamp; |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">fn </span>write_module_path(<span class="kw-2">&mut </span><span class="self">self</span>, record: <span class="kw-2">&</span>Record) -> io::Result<()> { |
| <span class="kw">if </span>!<span class="self">self</span>.module_path { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(()); |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(module_path) = record.module_path() { |
| <span class="self">self</span>.write_header_value(module_path) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">fn </span>write_target(<span class="kw-2">&mut </span><span class="self">self</span>, record: <span class="kw-2">&</span>Record) -> io::Result<()> { |
| <span class="kw">if </span>!<span class="self">self</span>.target { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(()); |
| } |
| |
| <span class="kw">match </span>record.target() { |
| <span class="string">"" </span>=> <span class="prelude-val">Ok</span>(()), |
| target => <span class="self">self</span>.write_header_value(target), |
| } |
| } |
| |
| <span class="kw">fn </span>finish_header(<span class="kw-2">&mut </span><span class="self">self</span>) -> io::Result<()> { |
| <span class="kw">if </span><span class="self">self</span>.written_header_value { |
| <span class="kw">let </span>close_brace = <span class="self">self</span>.subtle_style(<span class="string">"]"</span>); |
| <span class="macro">write!</span>(<span class="self">self</span>.buf, <span class="string">"{} "</span>, close_brace) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">fn </span>write_args(<span class="kw-2">&mut </span><span class="self">self</span>, record: <span class="kw-2">&</span>Record) -> io::Result<()> { |
| <span class="kw">match </span><span class="self">self</span>.indent { |
| <span class="comment">// Fast path for no indentation |
| </span><span class="prelude-val">None </span>=> <span class="macro">write!</span>(<span class="self">self</span>.buf, <span class="string">"{}{}"</span>, record.args(), <span class="self">self</span>.suffix), |
| |
| <span class="prelude-val">Some</span>(indent_count) => { |
| <span class="comment">// Create a wrapper around the buffer only if we have to actually indent the message |
| |
| </span><span class="kw">struct </span>IndentWrapper<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>: <span class="lifetime">'a</span>> { |
| fmt: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>DefaultFormat<<span class="lifetime">'b</span>>, |
| indent_count: usize, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'b</span>> Write <span class="kw">for </span>IndentWrapper<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>> { |
| <span class="kw">fn </span>write(<span class="kw-2">&mut </span><span class="self">self</span>, buf: <span class="kw-2">&</span>[u8]) -> io::Result<usize> { |
| <span class="kw">let </span><span class="kw-2">mut </span>first = <span class="bool-val">true</span>; |
| <span class="kw">for </span>chunk <span class="kw">in </span>buf.split(|<span class="kw-2">&</span>x| x == <span class="string">b'\n'</span>) { |
| <span class="kw">if </span>!first { |
| <span class="macro">write!</span>( |
| <span class="self">self</span>.fmt.buf, |
| <span class="string">"{}{:width$}"</span>, |
| <span class="self">self</span>.fmt.suffix, |
| <span class="string">""</span>, |
| width = <span class="self">self</span>.indent_count |
| )<span class="question-mark">?</span>; |
| } |
| <span class="self">self</span>.fmt.buf.write_all(chunk)<span class="question-mark">?</span>; |
| first = <span class="bool-val">false</span>; |
| } |
| |
| <span class="prelude-val">Ok</span>(buf.len()) |
| } |
| |
| <span class="kw">fn </span>flush(<span class="kw-2">&mut </span><span class="self">self</span>) -> io::Result<()> { |
| <span class="self">self</span>.fmt.buf.flush() |
| } |
| } |
| |
| <span class="comment">// The explicit scope here is just to make older versions of Rust happy |
| </span>{ |
| <span class="kw">let </span><span class="kw-2">mut </span>wrapper = IndentWrapper { |
| fmt: <span class="self">self</span>, |
| indent_count, |
| }; |
| <span class="macro">write!</span>(wrapper, <span class="string">"{}"</span>, record.args())<span class="question-mark">?</span>; |
| } |
| |
| <span class="macro">write!</span>(<span class="self">self</span>.buf, <span class="string">"{}"</span>, <span class="self">self</span>.suffix)<span class="question-mark">?</span>; |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span>log::{Level, Record}; |
| |
| <span class="kw">fn </span>write_record(record: Record, fmt: DefaultFormat) -> String { |
| <span class="kw">let </span>buf = fmt.buf.buf.clone(); |
| |
| fmt.write(<span class="kw-2">&</span>record).expect(<span class="string">"failed to write record"</span>); |
| |
| <span class="kw">let </span>buf = buf.borrow(); |
| String::from_utf8(buf.bytes().to_vec()).expect(<span class="string">"failed to read record"</span>) |
| } |
| |
| <span class="kw">fn </span>write_target(target: <span class="kw-2">&</span>str, fmt: DefaultFormat) -> String { |
| write_record( |
| Record::builder() |
| .args(<span class="macro">format_args!</span>(<span class="string">"log\nmessage"</span>)) |
| .level(Level::Info) |
| .file(<span class="prelude-val">Some</span>(<span class="string">"test.rs"</span>)) |
| .line(<span class="prelude-val">Some</span>(<span class="number">144</span>)) |
| .module_path(<span class="prelude-val">Some</span>(<span class="string">"test::path"</span>)) |
| .target(target) |
| .build(), |
| fmt, |
| ) |
| } |
| |
| <span class="kw">fn </span>write(fmt: DefaultFormat) -> String { |
| write_target(<span class="string">""</span>, fmt) |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>format_with_header() { |
| <span class="kw">let </span>writer = writer::Builder::new() |
| .write_style(WriteStyle::Never) |
| .build(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>f = Formatter::new(<span class="kw-2">&</span>writer); |
| |
| <span class="kw">let </span>written = write(DefaultFormat { |
| timestamp: <span class="prelude-val">None</span>, |
| module_path: <span class="bool-val">true</span>, |
| target: <span class="bool-val">false</span>, |
| level: <span class="bool-val">true</span>, |
| written_header_value: <span class="bool-val">false</span>, |
| indent: <span class="prelude-val">None</span>, |
| suffix: <span class="string">"\n"</span>, |
| buf: <span class="kw-2">&mut </span>f, |
| }); |
| |
| <span class="macro">assert_eq!</span>(<span class="string">"[INFO test::path] log\nmessage\n"</span>, written); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>format_no_header() { |
| <span class="kw">let </span>writer = writer::Builder::new() |
| .write_style(WriteStyle::Never) |
| .build(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>f = Formatter::new(<span class="kw-2">&</span>writer); |
| |
| <span class="kw">let </span>written = write(DefaultFormat { |
| timestamp: <span class="prelude-val">None</span>, |
| module_path: <span class="bool-val">false</span>, |
| target: <span class="bool-val">false</span>, |
| level: <span class="bool-val">false</span>, |
| written_header_value: <span class="bool-val">false</span>, |
| indent: <span class="prelude-val">None</span>, |
| suffix: <span class="string">"\n"</span>, |
| buf: <span class="kw-2">&mut </span>f, |
| }); |
| |
| <span class="macro">assert_eq!</span>(<span class="string">"log\nmessage\n"</span>, written); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>format_indent_spaces() { |
| <span class="kw">let </span>writer = writer::Builder::new() |
| .write_style(WriteStyle::Never) |
| .build(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>f = Formatter::new(<span class="kw-2">&</span>writer); |
| |
| <span class="kw">let </span>written = write(DefaultFormat { |
| timestamp: <span class="prelude-val">None</span>, |
| module_path: <span class="bool-val">true</span>, |
| target: <span class="bool-val">false</span>, |
| level: <span class="bool-val">true</span>, |
| written_header_value: <span class="bool-val">false</span>, |
| indent: <span class="prelude-val">Some</span>(<span class="number">4</span>), |
| suffix: <span class="string">"\n"</span>, |
| buf: <span class="kw-2">&mut </span>f, |
| }); |
| |
| <span class="macro">assert_eq!</span>(<span class="string">"[INFO test::path] log\n message\n"</span>, written); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>format_indent_zero_spaces() { |
| <span class="kw">let </span>writer = writer::Builder::new() |
| .write_style(WriteStyle::Never) |
| .build(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>f = Formatter::new(<span class="kw-2">&</span>writer); |
| |
| <span class="kw">let </span>written = write(DefaultFormat { |
| timestamp: <span class="prelude-val">None</span>, |
| module_path: <span class="bool-val">true</span>, |
| target: <span class="bool-val">false</span>, |
| level: <span class="bool-val">true</span>, |
| written_header_value: <span class="bool-val">false</span>, |
| indent: <span class="prelude-val">Some</span>(<span class="number">0</span>), |
| suffix: <span class="string">"\n"</span>, |
| buf: <span class="kw-2">&mut </span>f, |
| }); |
| |
| <span class="macro">assert_eq!</span>(<span class="string">"[INFO test::path] log\nmessage\n"</span>, written); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>format_indent_spaces_no_header() { |
| <span class="kw">let </span>writer = writer::Builder::new() |
| .write_style(WriteStyle::Never) |
| .build(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>f = Formatter::new(<span class="kw-2">&</span>writer); |
| |
| <span class="kw">let </span>written = write(DefaultFormat { |
| timestamp: <span class="prelude-val">None</span>, |
| module_path: <span class="bool-val">false</span>, |
| target: <span class="bool-val">false</span>, |
| level: <span class="bool-val">false</span>, |
| written_header_value: <span class="bool-val">false</span>, |
| indent: <span class="prelude-val">Some</span>(<span class="number">4</span>), |
| suffix: <span class="string">"\n"</span>, |
| buf: <span class="kw-2">&mut </span>f, |
| }); |
| |
| <span class="macro">assert_eq!</span>(<span class="string">"log\n message\n"</span>, written); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>format_suffix() { |
| <span class="kw">let </span>writer = writer::Builder::new() |
| .write_style(WriteStyle::Never) |
| .build(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>f = Formatter::new(<span class="kw-2">&</span>writer); |
| |
| <span class="kw">let </span>written = write(DefaultFormat { |
| timestamp: <span class="prelude-val">None</span>, |
| module_path: <span class="bool-val">false</span>, |
| target: <span class="bool-val">false</span>, |
| level: <span class="bool-val">false</span>, |
| written_header_value: <span class="bool-val">false</span>, |
| indent: <span class="prelude-val">None</span>, |
| suffix: <span class="string">"\n\n"</span>, |
| buf: <span class="kw-2">&mut </span>f, |
| }); |
| |
| <span class="macro">assert_eq!</span>(<span class="string">"log\nmessage\n\n"</span>, written); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>format_suffix_with_indent() { |
| <span class="kw">let </span>writer = writer::Builder::new() |
| .write_style(WriteStyle::Never) |
| .build(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>f = Formatter::new(<span class="kw-2">&</span>writer); |
| |
| <span class="kw">let </span>written = write(DefaultFormat { |
| timestamp: <span class="prelude-val">None</span>, |
| module_path: <span class="bool-val">false</span>, |
| target: <span class="bool-val">false</span>, |
| level: <span class="bool-val">false</span>, |
| written_header_value: <span class="bool-val">false</span>, |
| indent: <span class="prelude-val">Some</span>(<span class="number">4</span>), |
| suffix: <span class="string">"\n\n"</span>, |
| buf: <span class="kw-2">&mut </span>f, |
| }); |
| |
| <span class="macro">assert_eq!</span>(<span class="string">"log\n\n message\n\n"</span>, written); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>format_target() { |
| <span class="kw">let </span>writer = writer::Builder::new() |
| .write_style(WriteStyle::Never) |
| .build(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>f = Formatter::new(<span class="kw-2">&</span>writer); |
| |
| <span class="kw">let </span>written = write_target( |
| <span class="string">"target"</span>, |
| DefaultFormat { |
| timestamp: <span class="prelude-val">None</span>, |
| module_path: <span class="bool-val">true</span>, |
| target: <span class="bool-val">true</span>, |
| level: <span class="bool-val">true</span>, |
| written_header_value: <span class="bool-val">false</span>, |
| indent: <span class="prelude-val">None</span>, |
| suffix: <span class="string">"\n"</span>, |
| buf: <span class="kw-2">&mut </span>f, |
| }, |
| ); |
| |
| <span class="macro">assert_eq!</span>(<span class="string">"[INFO test::path target] log\nmessage\n"</span>, written); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>format_empty_target() { |
| <span class="kw">let </span>writer = writer::Builder::new() |
| .write_style(WriteStyle::Never) |
| .build(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>f = Formatter::new(<span class="kw-2">&</span>writer); |
| |
| <span class="kw">let </span>written = write(DefaultFormat { |
| timestamp: <span class="prelude-val">None</span>, |
| module_path: <span class="bool-val">true</span>, |
| target: <span class="bool-val">true</span>, |
| level: <span class="bool-val">true</span>, |
| written_header_value: <span class="bool-val">false</span>, |
| indent: <span class="prelude-val">None</span>, |
| suffix: <span class="string">"\n"</span>, |
| buf: <span class="kw-2">&mut </span>f, |
| }); |
| |
| <span class="macro">assert_eq!</span>(<span class="string">"[INFO test::path] log\nmessage\n"</span>, written); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>format_no_target() { |
| <span class="kw">let </span>writer = writer::Builder::new() |
| .write_style(WriteStyle::Never) |
| .build(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>f = Formatter::new(<span class="kw-2">&</span>writer); |
| |
| <span class="kw">let </span>written = write_target( |
| <span class="string">"target"</span>, |
| DefaultFormat { |
| timestamp: <span class="prelude-val">None</span>, |
| module_path: <span class="bool-val">true</span>, |
| target: <span class="bool-val">false</span>, |
| level: <span class="bool-val">true</span>, |
| written_header_value: <span class="bool-val">false</span>, |
| indent: <span class="prelude-val">None</span>, |
| suffix: <span class="string">"\n"</span>, |
| buf: <span class="kw-2">&mut </span>f, |
| }, |
| ); |
| |
| <span class="macro">assert_eq!</span>(<span class="string">"[INFO test::path] log\nmessage\n"</span>, written); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="env_logger" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
