1 | use super::*; |
2 | use crate::{ |
3 | field::{VisitFmt, VisitOutput}, |
4 | fmt::fmt_layer::{FmtContext, FormattedFields}, |
5 | registry::LookupSpan, |
6 | }; |
7 | |
8 | use std::fmt; |
9 | use tracing_core::{ |
10 | field::{self, Field}, |
11 | Event, Level, Subscriber, |
12 | }; |
13 | |
14 | #[cfg (feature = "tracing-log" )] |
15 | use tracing_log::NormalizeEvent; |
16 | |
17 | use nu_ansi_term::{Color, Style}; |
18 | |
19 | /// An excessively pretty, human-readable event formatter. |
20 | /// |
21 | /// Unlike the [`Full`], [`Compact`], and [`Json`] formatters, this is a |
22 | /// multi-line output format. Each individual event may output multiple lines of |
23 | /// text. |
24 | /// |
25 | /// # Example Output |
26 | /// |
27 | /// <pre><font color="#4E9A06"><b>:;</b></font> <font color="#4E9A06">cargo</font> run --example fmt-pretty |
28 | /// <font color="#4E9A06"><b> Finished</b></font> dev [unoptimized + debuginfo] target(s) in 0.08s |
29 | /// <font color="#4E9A06"><b> Running</b></font> `target/debug/examples/fmt-pretty` |
30 | /// 2022-02-15T18:44:24.535324Z <font color="#4E9A06"> INFO</font> <font color="#4E9A06"><b>fmt_pretty</b></font><font color="#4E9A06">: preparing to shave yaks, </font><font color="#4E9A06"><b>number_of_yaks</b></font><font color="#4E9A06">: 3</font> |
31 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt-pretty.rs:16 <font color="#AAAAAA"><i>on</i></font> main |
32 | /// |
33 | /// 2022-02-15T18:44:24.535403Z <font color="#4E9A06"> INFO</font> <font color="#4E9A06"><b>fmt_pretty::yak_shave</b></font><font color="#4E9A06">: shaving yaks</font> |
34 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:41 <font color="#AAAAAA"><i>on</i></font> main |
35 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
36 | /// |
37 | /// 2022-02-15T18:44:24.535442Z <font color="#75507B">TRACE</font> <font color="#75507B"><b>fmt_pretty::yak_shave</b></font><font color="#75507B">: hello! I'm gonna shave a yak, </font><font color="#75507B"><b>excitement</b></font><font color="#75507B">: "yay!"</font> |
38 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:16 <font color="#AAAAAA"><i>on</i></font> main |
39 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shave</b> <font color="#AAAAAA"><i>with</i></font> <b>yak</b>: 1 |
40 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
41 | /// |
42 | /// 2022-02-15T18:44:24.535469Z <font color="#75507B">TRACE</font> <font color="#75507B"><b>fmt_pretty::yak_shave</b></font><font color="#75507B">: yak shaved successfully</font> |
43 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:25 <font color="#AAAAAA"><i>on</i></font> main |
44 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shave</b> <font color="#AAAAAA"><i>with</i></font> <b>yak</b>: 1 |
45 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
46 | /// |
47 | /// 2022-02-15T18:44:24.535502Z <font color="#3465A4">DEBUG</font> <font color="#3465A4"><b>yak_events</b></font><font color="#3465A4">: </font><font color="#3465A4"><b>yak</b></font><font color="#3465A4">: 1, </font><font color="#3465A4"><b>shaved</b></font><font color="#3465A4">: true</font> |
48 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:46 <font color="#AAAAAA"><i>on</i></font> main |
49 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
50 | /// |
51 | /// 2022-02-15T18:44:24.535524Z <font color="#75507B">TRACE</font> <font color="#75507B"><b>fmt_pretty::yak_shave</b></font><font color="#75507B">: </font><font color="#75507B"><b>yaks_shaved</b></font><font color="#75507B">: 1</font> |
52 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:55 <font color="#AAAAAA"><i>on</i></font> main |
53 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
54 | /// |
55 | /// 2022-02-15T18:44:24.535551Z <font color="#75507B">TRACE</font> <font color="#75507B"><b>fmt_pretty::yak_shave</b></font><font color="#75507B">: hello! I'm gonna shave a yak, </font><font color="#75507B"><b>excitement</b></font><font color="#75507B">: "yay!"</font> |
56 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:16 <font color="#AAAAAA"><i>on</i></font> main |
57 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shave</b> <font color="#AAAAAA"><i>with</i></font> <b>yak</b>: 2 |
58 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
59 | /// |
60 | /// 2022-02-15T18:44:24.535573Z <font color="#75507B">TRACE</font> <font color="#75507B"><b>fmt_pretty::yak_shave</b></font><font color="#75507B">: yak shaved successfully</font> |
61 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:25 <font color="#AAAAAA"><i>on</i></font> main |
62 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shave</b> <font color="#AAAAAA"><i>with</i></font> <b>yak</b>: 2 |
63 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
64 | /// |
65 | /// 2022-02-15T18:44:24.535600Z <font color="#3465A4">DEBUG</font> <font color="#3465A4"><b>yak_events</b></font><font color="#3465A4">: </font><font color="#3465A4"><b>yak</b></font><font color="#3465A4">: 2, </font><font color="#3465A4"><b>shaved</b></font><font color="#3465A4">: true</font> |
66 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:46 <font color="#AAAAAA"><i>on</i></font> main |
67 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
68 | /// |
69 | /// 2022-02-15T18:44:24.535618Z <font color="#75507B">TRACE</font> <font color="#75507B"><b>fmt_pretty::yak_shave</b></font><font color="#75507B">: </font><font color="#75507B"><b>yaks_shaved</b></font><font color="#75507B">: 2</font> |
70 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:55 <font color="#AAAAAA"><i>on</i></font> main |
71 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
72 | /// |
73 | /// 2022-02-15T18:44:24.535644Z <font color="#75507B">TRACE</font> <font color="#75507B"><b>fmt_pretty::yak_shave</b></font><font color="#75507B">: hello! I'm gonna shave a yak, </font><font color="#75507B"><b>excitement</b></font><font color="#75507B">: "yay!"</font> |
74 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:16 <font color="#AAAAAA"><i>on</i></font> main |
75 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shave</b> <font color="#AAAAAA"><i>with</i></font> <b>yak</b>: 3 |
76 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
77 | /// |
78 | /// 2022-02-15T18:44:24.535670Z <font color="#C4A000"> WARN</font> <font color="#C4A000"><b>fmt_pretty::yak_shave</b></font><font color="#C4A000">: could not locate yak</font> |
79 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:18 <font color="#AAAAAA"><i>on</i></font> main |
80 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shave</b> <font color="#AAAAAA"><i>with</i></font> <b>yak</b>: 3 |
81 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
82 | /// |
83 | /// 2022-02-15T18:44:24.535698Z <font color="#3465A4">DEBUG</font> <font color="#3465A4"><b>yak_events</b></font><font color="#3465A4">: </font><font color="#3465A4"><b>yak</b></font><font color="#3465A4">: 3, </font><font color="#3465A4"><b>shaved</b></font><font color="#3465A4">: false</font> |
84 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:46 <font color="#AAAAAA"><i>on</i></font> main |
85 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
86 | /// |
87 | /// 2022-02-15T18:44:24.535720Z <font color="#CC0000">ERROR</font> <font color="#CC0000"><b>fmt_pretty::yak_shave</b></font><font color="#CC0000">: failed to shave yak, </font><font color="#CC0000"><b>yak</b></font><font color="#CC0000">: 3, </font><font color="#CC0000"><b>error</b></font><font color="#CC0000">: missing yak, </font><font color="#CC0000"><b>error.sources</b></font><font color="#CC0000">: [out of space, out of cash]</font> |
88 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:51 <font color="#AAAAAA"><i>on</i></font> main |
89 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
90 | /// |
91 | /// 2022-02-15T18:44:24.535742Z <font color="#75507B">TRACE</font> <font color="#75507B"><b>fmt_pretty::yak_shave</b></font><font color="#75507B">: </font><font color="#75507B"><b>yaks_shaved</b></font><font color="#75507B">: 2</font> |
92 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt/yak_shave.rs:55 <font color="#AAAAAA"><i>on</i></font> main |
93 | /// <font color="#AAAAAA"><i>in</i></font> fmt_pretty::yak_shave::<b>shaving_yaks</b> <font color="#AAAAAA"><i>with</i></font> <b>yaks</b>: 3 |
94 | /// |
95 | /// 2022-02-15T18:44:24.535765Z <font color="#4E9A06"> INFO</font> <font color="#4E9A06"><b>fmt_pretty</b></font><font color="#4E9A06">: yak shaving completed, </font><font color="#4E9A06"><b>all_yaks_shaved</b></font><font color="#4E9A06">: false</font> |
96 | /// <font color="#AAAAAA"><i>at</i></font> examples/examples/fmt-pretty.rs:19 <font color="#AAAAAA"><i>on</i></font> main |
97 | /// </pre> |
98 | #[derive (Debug, Clone, Eq, PartialEq)] |
99 | pub struct Pretty { |
100 | display_location: bool, |
101 | } |
102 | |
103 | /// The [visitor] produced by [`Pretty`]'s [`MakeVisitor`] implementation. |
104 | /// |
105 | /// [visitor]: field::Visit |
106 | /// [`MakeVisitor`]: crate::field::MakeVisitor |
107 | #[derive (Debug)] |
108 | pub struct PrettyVisitor<'a> { |
109 | writer: Writer<'a>, |
110 | is_empty: bool, |
111 | style: Style, |
112 | result: fmt::Result, |
113 | } |
114 | |
115 | /// An excessively pretty, human-readable [`MakeVisitor`] implementation. |
116 | /// |
117 | /// [`MakeVisitor`]: crate::field::MakeVisitor |
118 | #[derive (Debug)] |
119 | pub struct PrettyFields { |
120 | /// A value to override the provided `Writer`'s ANSI formatting |
121 | /// configuration. |
122 | /// |
123 | /// If this is `Some`, we override the `Writer`'s ANSI setting. This is |
124 | /// necessary in order to continue supporting the deprecated |
125 | /// `PrettyFields::with_ansi` method. If it is `None`, we don't override the |
126 | /// ANSI formatting configuration (because the deprecated method was not |
127 | /// called). |
128 | // TODO: when `PrettyFields::with_ansi` is removed, we can get rid |
129 | // of this entirely. |
130 | ansi: Option<bool>, |
131 | } |
132 | |
133 | // === impl Pretty === |
134 | |
135 | impl Default for Pretty { |
136 | fn default() -> Self { |
137 | Self { |
138 | display_location: true, |
139 | } |
140 | } |
141 | } |
142 | |
143 | impl Pretty { |
144 | fn style_for(level: &Level) -> Style { |
145 | match *level { |
146 | Level::TRACE => Style::new().fg(Color::Purple), |
147 | Level::DEBUG => Style::new().fg(Color::Blue), |
148 | Level::INFO => Style::new().fg(Color::Green), |
149 | Level::WARN => Style::new().fg(Color::Yellow), |
150 | Level::ERROR => Style::new().fg(Color::Red), |
151 | } |
152 | } |
153 | |
154 | /// Sets whether the event's source code location is displayed. |
155 | /// |
156 | /// This defaults to `true`. |
157 | #[deprecated ( |
158 | since = "0.3.6" , |
159 | note = "all formatters now support configurable source locations. Use `Format::with_source_location` instead." |
160 | )] |
161 | pub fn with_source_location(self, display_location: bool) -> Self { |
162 | Self { |
163 | display_location, |
164 | ..self |
165 | } |
166 | } |
167 | } |
168 | |
169 | impl<C, N, T> FormatEvent<C, N> for Format<Pretty, T> |
170 | where |
171 | C: Subscriber + for<'a> LookupSpan<'a>, |
172 | N: for<'a> FormatFields<'a> + 'static, |
173 | T: FormatTime, |
174 | { |
175 | fn format_event( |
176 | &self, |
177 | ctx: &FmtContext<'_, C, N>, |
178 | mut writer: Writer<'_>, |
179 | event: &Event<'_>, |
180 | ) -> fmt::Result { |
181 | #[cfg (feature = "tracing-log" )] |
182 | let normalized_meta = event.normalized_metadata(); |
183 | #[cfg (feature = "tracing-log" )] |
184 | let meta = normalized_meta.as_ref().unwrap_or_else(|| event.metadata()); |
185 | #[cfg (not(feature = "tracing-log" ))] |
186 | let meta = event.metadata(); |
187 | write!(&mut writer, " " )?; |
188 | |
189 | // if the `Format` struct *also* has an ANSI color configuration, |
190 | // override the writer...the API for configuring ANSI color codes on the |
191 | // `Format` struct is deprecated, but we still need to honor those |
192 | // configurations. |
193 | if let Some(ansi) = self.ansi { |
194 | writer = writer.with_ansi(ansi); |
195 | } |
196 | |
197 | self.format_timestamp(&mut writer)?; |
198 | |
199 | let style = if self.display_level && writer.has_ansi_escapes() { |
200 | Pretty::style_for(meta.level()) |
201 | } else { |
202 | Style::new() |
203 | }; |
204 | |
205 | if self.display_level { |
206 | write!( |
207 | writer, |
208 | " {} " , |
209 | super::FmtLevel::new(meta.level(), writer.has_ansi_escapes()) |
210 | )?; |
211 | } |
212 | |
213 | if self.display_target { |
214 | let target_style = if writer.has_ansi_escapes() { |
215 | style.bold() |
216 | } else { |
217 | style |
218 | }; |
219 | write!( |
220 | writer, |
221 | " {}{}{}:" , |
222 | target_style.prefix(), |
223 | meta.target(), |
224 | target_style.infix(style) |
225 | )?; |
226 | } |
227 | let line_number = if self.display_line_number { |
228 | meta.line() |
229 | } else { |
230 | None |
231 | }; |
232 | |
233 | // If the file name is disabled, format the line number right after the |
234 | // target. Otherwise, if we also display the file, it'll go on a |
235 | // separate line. |
236 | if let (Some(line_number), false, true) = ( |
237 | line_number, |
238 | self.display_filename, |
239 | self.format.display_location, |
240 | ) { |
241 | write!( |
242 | writer, |
243 | " {}{}{}:" , |
244 | style.prefix(), |
245 | line_number, |
246 | style.infix(style) |
247 | )?; |
248 | } |
249 | |
250 | writer.write_char(' ' )?; |
251 | |
252 | let mut v = PrettyVisitor::new(writer.by_ref(), true).with_style(style); |
253 | event.record(&mut v); |
254 | v.finish()?; |
255 | writer.write_char(' \n' )?; |
256 | |
257 | let dimmed = if writer.has_ansi_escapes() { |
258 | Style::new().dimmed().italic() |
259 | } else { |
260 | Style::new() |
261 | }; |
262 | let thread = self.display_thread_name || self.display_thread_id; |
263 | |
264 | if let (Some(file), true, true) = ( |
265 | meta.file(), |
266 | self.format.display_location, |
267 | self.display_filename, |
268 | ) { |
269 | write!(writer, " {} {}" , dimmed.paint("at" ), file,)?; |
270 | |
271 | if let Some(line) = line_number { |
272 | write!(writer, ": {}" , line)?; |
273 | } |
274 | writer.write_char(if thread { ' ' } else { ' \n' })?; |
275 | } else if thread { |
276 | write!(writer, " " )?; |
277 | }; |
278 | |
279 | if thread { |
280 | write!(writer, " {} " , dimmed.paint("on" ))?; |
281 | let thread = std::thread::current(); |
282 | if self.display_thread_name { |
283 | if let Some(name) = thread.name() { |
284 | write!(writer, " {}" , name)?; |
285 | if self.display_thread_id { |
286 | writer.write_char(' ' )?; |
287 | } |
288 | } |
289 | } |
290 | if self.display_thread_id { |
291 | write!(writer, " {:?}" , thread.id())?; |
292 | } |
293 | writer.write_char(' \n' )?; |
294 | } |
295 | |
296 | let bold = writer.bold(); |
297 | let span = event |
298 | .parent() |
299 | .and_then(|id| ctx.span(id)) |
300 | .or_else(|| ctx.lookup_current()); |
301 | |
302 | let scope = span.into_iter().flat_map(|span| span.scope()); |
303 | |
304 | for span in scope { |
305 | let meta = span.metadata(); |
306 | if self.display_target { |
307 | write!( |
308 | writer, |
309 | " {} {}:: {}" , |
310 | dimmed.paint("in" ), |
311 | meta.target(), |
312 | bold.paint(meta.name()), |
313 | )?; |
314 | } else { |
315 | write!( |
316 | writer, |
317 | " {} {}" , |
318 | dimmed.paint("in" ), |
319 | bold.paint(meta.name()), |
320 | )?; |
321 | } |
322 | |
323 | let ext = span.extensions(); |
324 | let fields = &ext |
325 | .get::<FormattedFields<N>>() |
326 | .expect("Unable to find FormattedFields in extensions; this is a bug" ); |
327 | if !fields.is_empty() { |
328 | write!(writer, " {} {}" , dimmed.paint("with" ), fields)?; |
329 | } |
330 | writer.write_char(' \n' )?; |
331 | } |
332 | |
333 | writer.write_char(' \n' ) |
334 | } |
335 | } |
336 | |
337 | impl<'writer> FormatFields<'writer> for Pretty { |
338 | fn format_fields<R: RecordFields>(&self, writer: Writer<'writer>, fields: R) -> fmt::Result { |
339 | let mut v: PrettyVisitor<'_> = PrettyVisitor::new(writer, is_empty:true); |
340 | fields.record(&mut v); |
341 | v.finish() |
342 | } |
343 | |
344 | fn add_fields( |
345 | &self, |
346 | current: &'writer mut FormattedFields<Self>, |
347 | fields: &span::Record<'_>, |
348 | ) -> fmt::Result { |
349 | let empty: bool = current.is_empty(); |
350 | let writer: Writer<'_> = current.as_writer(); |
351 | let mut v: PrettyVisitor<'_> = PrettyVisitor::new(writer, is_empty:empty); |
352 | fields.record(&mut v); |
353 | v.finish() |
354 | } |
355 | } |
356 | |
357 | // === impl PrettyFields === |
358 | |
359 | impl Default for PrettyFields { |
360 | fn default() -> Self { |
361 | Self::new() |
362 | } |
363 | } |
364 | |
365 | impl PrettyFields { |
366 | /// Returns a new default [`PrettyFields`] implementation. |
367 | pub fn new() -> Self { |
368 | // By default, don't override the `Writer`'s ANSI colors |
369 | // configuration. We'll only do this if the user calls the |
370 | // deprecated `PrettyFields::with_ansi` method. |
371 | Self { ansi: None } |
372 | } |
373 | |
374 | /// Enable ANSI encoding for formatted fields. |
375 | #[deprecated ( |
376 | since = "0.3.3" , |
377 | note = "Use `fmt::Subscriber::with_ansi` or `fmt::Layer::with_ansi` instead." |
378 | )] |
379 | pub fn with_ansi(self, ansi: bool) -> Self { |
380 | Self { |
381 | ansi: Some(ansi), |
382 | ..self |
383 | } |
384 | } |
385 | } |
386 | |
387 | impl<'a> MakeVisitor<Writer<'a>> for PrettyFields { |
388 | type Visitor = PrettyVisitor<'a>; |
389 | |
390 | #[inline ] |
391 | fn make_visitor(&self, mut target: Writer<'a>) -> Self::Visitor { |
392 | if let Some(ansi: bool) = self.ansi { |
393 | target = target.with_ansi(is_ansi:ansi); |
394 | } |
395 | PrettyVisitor::new(writer:target, is_empty:true) |
396 | } |
397 | } |
398 | |
399 | // === impl PrettyVisitor === |
400 | |
401 | impl<'a> PrettyVisitor<'a> { |
402 | /// Returns a new default visitor that formats to the provided `writer`. |
403 | /// |
404 | /// # Arguments |
405 | /// - `writer`: the writer to format to. |
406 | /// - `is_empty`: whether or not any fields have been previously written to |
407 | /// that writer. |
408 | pub fn new(writer: Writer<'a>, is_empty: bool) -> Self { |
409 | Self { |
410 | writer, |
411 | is_empty, |
412 | style: Style::default(), |
413 | result: Ok(()), |
414 | } |
415 | } |
416 | |
417 | pub(crate) fn with_style(self, style: Style) -> Self { |
418 | Self { style, ..self } |
419 | } |
420 | |
421 | fn write_padded(&mut self, value: &impl fmt::Debug) { |
422 | let padding = if self.is_empty { |
423 | self.is_empty = false; |
424 | "" |
425 | } else { |
426 | ", " |
427 | }; |
428 | self.result = write!(self.writer, " {}{:?}" , padding, value); |
429 | } |
430 | |
431 | fn bold(&self) -> Style { |
432 | if self.writer.has_ansi_escapes() { |
433 | self.style.bold() |
434 | } else { |
435 | Style::new() |
436 | } |
437 | } |
438 | } |
439 | |
440 | impl<'a> field::Visit for PrettyVisitor<'a> { |
441 | fn record_str(&mut self, field: &Field, value: &str) { |
442 | if self.result.is_err() { |
443 | return; |
444 | } |
445 | |
446 | if field.name() == "message" { |
447 | self.record_debug(field, &format_args!(" {}" , value)) |
448 | } else { |
449 | self.record_debug(field, &value) |
450 | } |
451 | } |
452 | |
453 | fn record_error(&mut self, field: &Field, value: &(dyn std::error::Error + 'static)) { |
454 | if let Some(source) = value.source() { |
455 | let bold = self.bold(); |
456 | self.record_debug( |
457 | field, |
458 | &format_args!( |
459 | " {}, {}{}.sources {}: {}" , |
460 | value, |
461 | bold.prefix(), |
462 | field, |
463 | bold.infix(self.style), |
464 | ErrorSourceList(source), |
465 | ), |
466 | ) |
467 | } else { |
468 | self.record_debug(field, &format_args!(" {}" , value)) |
469 | } |
470 | } |
471 | |
472 | fn record_debug(&mut self, field: &Field, value: &dyn fmt::Debug) { |
473 | if self.result.is_err() { |
474 | return; |
475 | } |
476 | let bold = self.bold(); |
477 | match field.name() { |
478 | "message" => self.write_padded(&format_args!(" {}{:?}" , self.style.prefix(), value,)), |
479 | // Skip fields that are actually log metadata that have already been handled |
480 | #[cfg (feature = "tracing-log" )] |
481 | name if name.starts_with("log." ) => self.result = Ok(()), |
482 | name if name.starts_with("r#" ) => self.write_padded(&format_args!( |
483 | " {}{}{}: {:?}" , |
484 | bold.prefix(), |
485 | &name[2..], |
486 | bold.infix(self.style), |
487 | value |
488 | )), |
489 | name => self.write_padded(&format_args!( |
490 | " {}{}{}: {:?}" , |
491 | bold.prefix(), |
492 | name, |
493 | bold.infix(self.style), |
494 | value |
495 | )), |
496 | }; |
497 | } |
498 | } |
499 | |
500 | impl<'a> VisitOutput<fmt::Result> for PrettyVisitor<'a> { |
501 | fn finish(mut self) -> fmt::Result { |
502 | write!(&mut self.writer, " {}" , self.style.suffix())?; |
503 | self.result |
504 | } |
505 | } |
506 | |
507 | impl<'a> VisitFmt for PrettyVisitor<'a> { |
508 | fn writer(&mut self) -> &mut dyn fmt::Write { |
509 | &mut self.writer |
510 | } |
511 | } |
512 | |