diff options
Diffstat (limited to 'vendor/env_logger/src/filter')
| -rw-r--r-- | vendor/env_logger/src/filter/mod.rs | 868 | ||||
| -rw-r--r-- | vendor/env_logger/src/filter/regex.rs | 29 | ||||
| -rw-r--r-- | vendor/env_logger/src/filter/string.rs | 24 |
3 files changed, 921 insertions, 0 deletions
diff --git a/vendor/env_logger/src/filter/mod.rs b/vendor/env_logger/src/filter/mod.rs new file mode 100644 index 000000000..721dcb463 --- /dev/null +++ b/vendor/env_logger/src/filter/mod.rs @@ -0,0 +1,868 @@ +//! Filtering for log records. +//! +//! This module contains the log filtering used by `env_logger` to match records. +//! You can use the `Filter` type in your own logger implementation to use the same +//! filter parsing and matching as `env_logger`. For more details about the format +//! for directive strings see [Enabling Logging]. +//! +//! ## Using `env_logger` in your own logger +//! +//! You can use `env_logger`'s filtering functionality with your own logger. +//! Call [`Builder::parse`] to parse directives from a string when constructing +//! your logger. Call [`Filter::matches`] to check whether a record should be +//! logged based on the parsed filters when log records are received. +//! +//! ``` +//! extern crate log; +//! extern crate env_logger; +//! use env_logger::filter::Filter; +//! use log::{Log, Metadata, Record}; +//! +//! struct MyLogger { +//! filter: Filter +//! } +//! +//! impl MyLogger { +//! fn new() -> MyLogger { +//! use env_logger::filter::Builder; +//! let mut builder = Builder::new(); +//! +//! // Parse a directives string from an environment variable +//! if let Ok(ref filter) = std::env::var("MY_LOG_LEVEL") { +//! builder.parse(filter); +//! } +//! +//! MyLogger { +//! filter: builder.build() +//! } +//! } +//! } +//! +//! impl Log for MyLogger { +//! fn enabled(&self, metadata: &Metadata) -> bool { +//! self.filter.enabled(metadata) +//! } +//! +//! fn log(&self, record: &Record) { +//! // Check if the record is matched by the filter +//! if self.filter.matches(record) { +//! println!("{:?}", record); +//! } +//! } +//! +//! fn flush(&self) {} +//! } +//! ``` +//! +//! [Enabling Logging]: ../index.html#enabling-logging +//! [`Builder::parse`]: struct.Builder.html#method.parse +//! [`Filter::matches`]: struct.Filter.html#method.matches + +use log::{Level, LevelFilter, Metadata, Record}; +use std::collections::HashMap; +use std::env; +use std::fmt; +use std::mem; + +#[cfg(feature = "regex")] +#[path = "regex.rs"] +mod inner; + +#[cfg(not(feature = "regex"))] +#[path = "string.rs"] +mod inner; + +/// A log filter. +/// +/// This struct can be used to determine whether or not a log record +/// should be written to the output. +/// Use the [`Builder`] type to parse and construct a `Filter`. +/// +/// [`Builder`]: struct.Builder.html +pub struct Filter { + directives: Vec<Directive>, + filter: Option<inner::Filter>, +} + +/// A builder for a log filter. +/// +/// It can be used to parse a set of directives from a string before building +/// a [`Filter`] instance. +/// +/// ## Example +/// +/// ``` +/// # #[macro_use] extern crate log; +/// # use std::env; +/// use env_logger::filter::Builder; +/// +/// let mut builder = Builder::new(); +/// +/// // Parse a logging filter from an environment variable. +/// if let Ok(rust_log) = env::var("RUST_LOG") { +/// builder.parse(&rust_log); +/// } +/// +/// let filter = builder.build(); +/// ``` +/// +/// [`Filter`]: struct.Filter.html +pub struct Builder { + directives: HashMap<Option<String>, LevelFilter>, + filter: Option<inner::Filter>, + built: bool, +} + +#[derive(Debug)] +struct Directive { + name: Option<String>, + level: LevelFilter, +} + +impl Filter { + /// Returns the maximum `LevelFilter` that this filter instance is + /// configured to output. + /// + /// # Example + /// + /// ```rust + /// use log::LevelFilter; + /// use env_logger::filter::Builder; + /// + /// let mut builder = Builder::new(); + /// builder.filter(Some("module1"), LevelFilter::Info); + /// builder.filter(Some("module2"), LevelFilter::Error); + /// + /// let filter = builder.build(); + /// assert_eq!(filter.filter(), LevelFilter::Info); + /// ``` + pub fn filter(&self) -> LevelFilter { + self.directives + .iter() + .map(|d| d.level) + .max() + .unwrap_or(LevelFilter::Off) + } + + /// Checks if this record matches the configured filter. + pub fn matches(&self, record: &Record) -> bool { + if !self.enabled(record.metadata()) { + return false; + } + + if let Some(filter) = self.filter.as_ref() { + if !filter.is_match(&record.args().to_string()) { + return false; + } + } + + true + } + + /// Determines if a log message with the specified metadata would be logged. + pub fn enabled(&self, metadata: &Metadata) -> bool { + let level = metadata.level(); + let target = metadata.target(); + + enabled(&self.directives, level, target) + } +} + +impl Builder { + /// Initializes the filter builder with defaults. + pub fn new() -> Builder { + Builder { + directives: HashMap::new(), + filter: None, + built: false, + } + } + + /// Initializes the filter builder from an environment. + pub fn from_env(env: &str) -> Builder { + let mut builder = Builder::new(); + + if let Ok(s) = env::var(env) { + builder.parse(&s); + } + + builder + } + + /// Adds a directive to the filter for a specific module. + pub fn filter_module(&mut self, module: &str, level: LevelFilter) -> &mut Self { + self.filter(Some(module), level) + } + + /// Adds a directive to the filter for all modules. + pub fn filter_level(&mut self, level: LevelFilter) -> &mut Self { + self.filter(None, level) + } + + /// Adds a directive to the filter. + /// + /// The given module (if any) will log at most the specified level provided. + /// If no module is provided then the filter will apply to all log messages. + pub fn filter(&mut self, module: Option<&str>, level: LevelFilter) -> &mut Self { + self.directives.insert(module.map(|s| s.to_string()), level); + self + } + + /// Parses the directives string. + /// + /// See the [Enabling Logging] section for more details. + /// + /// [Enabling Logging]: ../index.html#enabling-logging + pub fn parse(&mut self, filters: &str) -> &mut Self { + let (directives, filter) = parse_spec(filters); + + self.filter = filter; + + for directive in directives { + self.directives.insert(directive.name, directive.level); + } + self + } + + /// Build a log filter. + pub fn build(&mut self) -> Filter { + assert!(!self.built, "attempt to re-use consumed builder"); + self.built = true; + + let mut directives = Vec::new(); + if self.directives.is_empty() { + // Adds the default filter if none exist + directives.push(Directive { + name: None, + level: LevelFilter::Error, + }); + } else { + // Consume map of directives. + let directives_map = mem::take(&mut self.directives); + directives = directives_map + .into_iter() + .map(|(name, level)| Directive { name, level }) + .collect(); + // Sort the directives by length of their name, this allows a + // little more efficient lookup at runtime. + directives.sort_by(|a, b| { + let alen = a.name.as_ref().map(|a| a.len()).unwrap_or(0); + let blen = b.name.as_ref().map(|b| b.len()).unwrap_or(0); + alen.cmp(&blen) + }); + } + + Filter { + directives: mem::take(&mut directives), + filter: mem::replace(&mut self.filter, None), + } + } +} + +impl Default for Builder { + fn default() -> Self { + Builder::new() + } +} + +impl fmt::Debug for Filter { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Filter") + .field("filter", &self.filter) + .field("directives", &self.directives) + .finish() + } +} + +impl fmt::Debug for Builder { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + if self.built { + f.debug_struct("Filter").field("built", &true).finish() + } else { + f.debug_struct("Filter") + .field("filter", &self.filter) + .field("directives", &self.directives) + .finish() + } + } +} + +/// Parse a logging specification string (e.g: "crate1,crate2::mod3,crate3::x=error/foo") +/// and return a vector with log directives. +fn parse_spec(spec: &str) -> (Vec<Directive>, Option<inner::Filter>) { + let mut dirs = Vec::new(); + + let mut parts = spec.split('/'); + let mods = parts.next(); + let filter = parts.next(); + if parts.next().is_some() { + eprintln!( + "warning: invalid logging spec '{}', \ + ignoring it (too many '/'s)", + spec + ); + return (dirs, None); + } + if let Some(m) = mods { + for s in m.split(',').map(|ss| ss.trim()) { + if s.is_empty() { + continue; + } + let mut parts = s.split('='); + let (log_level, name) = + match (parts.next(), parts.next().map(|s| s.trim()), parts.next()) { + (Some(part0), None, None) => { + // if the single argument is a log-level string or number, + // treat that as a global fallback + match part0.parse() { + Ok(num) => (num, None), + Err(_) => (LevelFilter::max(), Some(part0)), + } + } + (Some(part0), Some(""), None) => (LevelFilter::max(), Some(part0)), + (Some(part0), Some(part1), None) => match part1.parse() { + Ok(num) => (num, Some(part0)), + _ => { + eprintln!( + "warning: invalid logging spec '{}', \ + ignoring it", + part1 + ); + continue; + } + }, + _ => { + eprintln!( + "warning: invalid logging spec '{}', \ + ignoring it", + s + ); + continue; + } + }; + dirs.push(Directive { + name: name.map(|s| s.to_string()), + level: log_level, + }); + } + } + + let filter = filter.and_then(|filter| match inner::Filter::new(filter) { + Ok(re) => Some(re), + Err(e) => { + eprintln!("warning: invalid regex filter - {}", e); + None + } + }); + + (dirs, filter) +} + +// Check whether a level and target are enabled by the set of directives. +fn enabled(directives: &[Directive], level: Level, target: &str) -> bool { + // Search for the longest match, the vector is assumed to be pre-sorted. + for directive in directives.iter().rev() { + match directive.name { + Some(ref name) if !target.starts_with(&**name) => {} + Some(..) | None => return level <= directive.level, + } + } + false +} + +#[cfg(test)] +mod tests { + use log::{Level, LevelFilter}; + + use super::{enabled, parse_spec, Builder, Directive, Filter}; + + fn make_logger_filter(dirs: Vec<Directive>) -> Filter { + let mut logger = Builder::new().build(); + logger.directives = dirs; + logger + } + + #[test] + fn filter_info() { + let logger = Builder::new().filter(None, LevelFilter::Info).build(); + assert!(enabled(&logger.directives, Level::Info, "crate1")); + assert!(!enabled(&logger.directives, Level::Debug, "crate1")); + } + + #[test] + fn filter_beginning_longest_match() { + let logger = Builder::new() + .filter(Some("crate2"), LevelFilter::Info) + .filter(Some("crate2::mod"), LevelFilter::Debug) + .filter(Some("crate1::mod1"), LevelFilter::Warn) + .build(); + assert!(enabled(&logger.directives, Level::Debug, "crate2::mod1")); + assert!(!enabled(&logger.directives, Level::Debug, "crate2")); + } + + // Some of our tests are only correct or complete when they cover the full + // universe of variants for log::Level. In the unlikely event that a new + // variant is added in the future, this test will detect the scenario and + // alert us to the need to review and update the tests. In such a + // situation, this test will fail to compile, and the error message will + // look something like this: + // + // error[E0004]: non-exhaustive patterns: `NewVariant` not covered + // --> src/filter/mod.rs:413:15 + // | + // 413 | match level_universe { + // | ^^^^^^^^^^^^^^ pattern `NewVariant` not covered + #[test] + fn ensure_tests_cover_level_universe() { + let level_universe: Level = Level::Trace; // use of trace variant is arbitrary + match level_universe { + Level::Error | Level::Warn | Level::Info | Level::Debug | Level::Trace => (), + } + } + + #[test] + fn parse_default() { + let logger = Builder::new().parse("info,crate1::mod1=warn").build(); + assert!(enabled(&logger.directives, Level::Warn, "crate1::mod1")); + assert!(enabled(&logger.directives, Level::Info, "crate2::mod2")); + } + + #[test] + fn parse_default_bare_level_off_lc() { + let logger = Builder::new().parse("off").build(); + assert!(!enabled(&logger.directives, Level::Error, "")); + assert!(!enabled(&logger.directives, Level::Warn, "")); + assert!(!enabled(&logger.directives, Level::Info, "")); + assert!(!enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + + #[test] + fn parse_default_bare_level_off_uc() { + let logger = Builder::new().parse("OFF").build(); + assert!(!enabled(&logger.directives, Level::Error, "")); + assert!(!enabled(&logger.directives, Level::Warn, "")); + assert!(!enabled(&logger.directives, Level::Info, "")); + assert!(!enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + + #[test] + fn parse_default_bare_level_error_lc() { + let logger = Builder::new().parse("error").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(!enabled(&logger.directives, Level::Warn, "")); + assert!(!enabled(&logger.directives, Level::Info, "")); + assert!(!enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + + #[test] + fn parse_default_bare_level_error_uc() { + let logger = Builder::new().parse("ERROR").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(!enabled(&logger.directives, Level::Warn, "")); + assert!(!enabled(&logger.directives, Level::Info, "")); + assert!(!enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + + #[test] + fn parse_default_bare_level_warn_lc() { + let logger = Builder::new().parse("warn").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(!enabled(&logger.directives, Level::Info, "")); + assert!(!enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + + #[test] + fn parse_default_bare_level_warn_uc() { + let logger = Builder::new().parse("WARN").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(!enabled(&logger.directives, Level::Info, "")); + assert!(!enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + + #[test] + fn parse_default_bare_level_info_lc() { + let logger = Builder::new().parse("info").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(enabled(&logger.directives, Level::Info, "")); + assert!(!enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + + #[test] + fn parse_default_bare_level_info_uc() { + let logger = Builder::new().parse("INFO").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(enabled(&logger.directives, Level::Info, "")); + assert!(!enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + + #[test] + fn parse_default_bare_level_debug_lc() { + let logger = Builder::new().parse("debug").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(enabled(&logger.directives, Level::Info, "")); + assert!(enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + + #[test] + fn parse_default_bare_level_debug_uc() { + let logger = Builder::new().parse("DEBUG").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(enabled(&logger.directives, Level::Info, "")); + assert!(enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + + #[test] + fn parse_default_bare_level_trace_lc() { + let logger = Builder::new().parse("trace").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(enabled(&logger.directives, Level::Info, "")); + assert!(enabled(&logger.directives, Level::Debug, "")); + assert!(enabled(&logger.directives, Level::Trace, "")); + } + + #[test] + fn parse_default_bare_level_trace_uc() { + let logger = Builder::new().parse("TRACE").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(enabled(&logger.directives, Level::Info, "")); + assert!(enabled(&logger.directives, Level::Debug, "")); + assert!(enabled(&logger.directives, Level::Trace, "")); + } + + // In practice, the desired log level is typically specified by a token + // that is either all lowercase (e.g., 'trace') or all uppercase (.e.g, + // 'TRACE'), but this tests serves as a reminder that + // log::Level::from_str() ignores all case variants. + #[test] + fn parse_default_bare_level_debug_mixed() { + { + let logger = Builder::new().parse("Debug").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(enabled(&logger.directives, Level::Info, "")); + assert!(enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + { + let logger = Builder::new().parse("debuG").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(enabled(&logger.directives, Level::Info, "")); + assert!(enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + { + let logger = Builder::new().parse("deBug").build(); + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(enabled(&logger.directives, Level::Info, "")); + assert!(enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + { + let logger = Builder::new().parse("DeBuG").build(); // LaTeX flavor! + assert!(enabled(&logger.directives, Level::Error, "")); + assert!(enabled(&logger.directives, Level::Warn, "")); + assert!(enabled(&logger.directives, Level::Info, "")); + assert!(enabled(&logger.directives, Level::Debug, "")); + assert!(!enabled(&logger.directives, Level::Trace, "")); + } + } + + #[test] + fn match_full_path() { + let logger = make_logger_filter(vec![ + Directive { + name: Some("crate2".to_string()), + level: LevelFilter::Info, + }, + Directive { + name: Some("crate1::mod1".to_string()), + level: LevelFilter::Warn, + }, + ]); + assert!(enabled(&logger.directives, Level::Warn, "crate1::mod1")); + assert!(!enabled(&logger.directives, Level::Info, "crate1::mod1")); + assert!(enabled(&logger.directives, Level::Info, "crate2")); + assert!(!enabled(&logger.directives, Level::Debug, "crate2")); + } + + #[test] + fn no_match() { + let logger = make_logger_filter(vec![ + Directive { + name: Some("crate2".to_string()), + level: LevelFilter::Info, + }, + Directive { + name: Some("crate1::mod1".to_string()), + level: LevelFilter::Warn, + }, + ]); + assert!(!enabled(&logger.directives, Level::Warn, "crate3")); + } + + #[test] + fn match_beginning() { + let logger = make_logger_filter(vec![ + Directive { + name: Some("crate2".to_string()), + level: LevelFilter::Info, + }, + Directive { + name: Some("crate1::mod1".to_string()), + level: LevelFilter::Warn, + }, + ]); + assert!(enabled(&logger.directives, Level::Info, "crate2::mod1")); + } + + #[test] + fn match_beginning_longest_match() { + let logger = make_logger_filter(vec![ + Directive { + name: Some("crate2".to_string()), + level: LevelFilter::Info, + }, + Directive { + name: Some("crate2::mod".to_string()), + level: LevelFilter::Debug, + }, + Directive { + name: Some("crate1::mod1".to_string()), + level: LevelFilter::Warn, + }, + ]); + assert!(enabled(&logger.directives, Level::Debug, "crate2::mod1")); + assert!(!enabled(&logger.directives, Level::Debug, "crate2")); + } + + #[test] + fn match_default() { + let logger = make_logger_filter(vec![ + Directive { + name: None, + level: LevelFilter::Info, + }, + Directive { + name: Some("crate1::mod1".to_string()), + level: LevelFilter::Warn, + }, + ]); + assert!(enabled(&logger.directives, Level::Warn, "crate1::mod1")); + assert!(enabled(&logger.directives, Level::Info, "crate2::mod2")); + } + + #[test] + fn zero_level() { + let logger = make_logger_filter(vec![ + Directive { + name: None, + level: LevelFilter::Info, + }, + Directive { + name: Some("crate1::mod1".to_string()), + level: LevelFilter::Off, + }, + ]); + assert!(!enabled(&logger.directives, Level::Error, "crate1::mod1")); + assert!(enabled(&logger.directives, Level::Info, "crate2::mod2")); + } + + #[test] + fn parse_spec_valid() { + let (dirs, filter) = parse_spec("crate1::mod1=error,crate1::mod2,crate2=debug"); + assert_eq!(dirs.len(), 3); + assert_eq!(dirs[0].name, Some("crate1::mod1".to_string())); + assert_eq!(dirs[0].level, LevelFilter::Error); + + assert_eq!(dirs[1].name, Some("crate1::mod2".to_string())); + assert_eq!(dirs[1].level, LevelFilter::max()); + + assert_eq!(dirs[2].name, Some("crate2".to_string())); + assert_eq!(dirs[2].level, LevelFilter::Debug); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_invalid_crate() { + // test parse_spec with multiple = in specification + let (dirs, filter) = parse_spec("crate1::mod1=warn=info,crate2=debug"); + assert_eq!(dirs.len(), 1); + assert_eq!(dirs[0].name, Some("crate2".to_string())); + assert_eq!(dirs[0].level, LevelFilter::Debug); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_invalid_level() { + // test parse_spec with 'noNumber' as log level + let (dirs, filter) = parse_spec("crate1::mod1=noNumber,crate2=debug"); + assert_eq!(dirs.len(), 1); + assert_eq!(dirs[0].name, Some("crate2".to_string())); + assert_eq!(dirs[0].level, LevelFilter::Debug); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_string_level() { + // test parse_spec with 'warn' as log level + let (dirs, filter) = parse_spec("crate1::mod1=wrong,crate2=warn"); + assert_eq!(dirs.len(), 1); + assert_eq!(dirs[0].name, Some("crate2".to_string())); + assert_eq!(dirs[0].level, LevelFilter::Warn); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_empty_level() { + // test parse_spec with '' as log level + let (dirs, filter) = parse_spec("crate1::mod1=wrong,crate2="); + assert_eq!(dirs.len(), 1); + assert_eq!(dirs[0].name, Some("crate2".to_string())); + assert_eq!(dirs[0].level, LevelFilter::max()); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_empty_level_isolated() { + // test parse_spec with "" as log level (and the entire spec str) + let (dirs, filter) = parse_spec(""); // should be ignored + assert_eq!(dirs.len(), 0); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_blank_level_isolated() { + // test parse_spec with a white-space-only string specified as the log + // level (and the entire spec str) + let (dirs, filter) = parse_spec(" "); // should be ignored + assert_eq!(dirs.len(), 0); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_blank_level_isolated_comma_only() { + // The spec should contain zero or more comma-separated string slices, + // so a comma-only string should be interpreted as two empty strings + // (which should both be treated as invalid, so ignored). + let (dirs, filter) = parse_spec(","); // should be ignored + assert_eq!(dirs.len(), 0); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_blank_level_isolated_comma_blank() { + // The spec should contain zero or more comma-separated string slices, + // so this bogus spec should be interpreted as containing one empty + // string and one blank string. Both should both be treated as + // invalid, so ignored. + let (dirs, filter) = parse_spec(", "); // should be ignored + assert_eq!(dirs.len(), 0); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_blank_level_isolated_blank_comma() { + // The spec should contain zero or more comma-separated string slices, + // so this bogus spec should be interpreted as containing one blank + // string and one empty string. Both should both be treated as + // invalid, so ignored. + let (dirs, filter) = parse_spec(" ,"); // should be ignored + assert_eq!(dirs.len(), 0); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_global() { + // test parse_spec with no crate + let (dirs, filter) = parse_spec("warn,crate2=debug"); + assert_eq!(dirs.len(), 2); + assert_eq!(dirs[0].name, None); + assert_eq!(dirs[0].level, LevelFilter::Warn); + assert_eq!(dirs[1].name, Some("crate2".to_string())); + assert_eq!(dirs[1].level, LevelFilter::Debug); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_global_bare_warn_lc() { + // test parse_spec with no crate, in isolation, all lowercase + let (dirs, filter) = parse_spec("warn"); + assert_eq!(dirs.len(), 1); + assert_eq!(dirs[0].name, None); + assert_eq!(dirs[0].level, LevelFilter::Warn); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_global_bare_warn_uc() { + // test parse_spec with no crate, in isolation, all uppercase + let (dirs, filter) = parse_spec("WARN"); + assert_eq!(dirs.len(), 1); + assert_eq!(dirs[0].name, None); + assert_eq!(dirs[0].level, LevelFilter::Warn); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_global_bare_warn_mixed() { + // test parse_spec with no crate, in isolation, mixed case + let (dirs, filter) = parse_spec("wArN"); + assert_eq!(dirs.len(), 1); + assert_eq!(dirs[0].name, None); + assert_eq!(dirs[0].level, LevelFilter::Warn); + assert!(filter.is_none()); + } + + #[test] + fn parse_spec_valid_filter() { + let (dirs, filter) = parse_spec("crate1::mod1=error,crate1::mod2,crate2=debug/abc"); + assert_eq!(dirs.len(), 3); + assert_eq!(dirs[0].name, Some("crate1::mod1".to_string())); + assert_eq!(dirs[0].level, LevelFilter::Error); + + assert_eq!(dirs[1].name, Some("crate1::mod2".to_string())); + assert_eq!(dirs[1].level, LevelFilter::max()); + + assert_eq!(dirs[2].name, Some("crate2".to_string())); + assert_eq!(dirs[2].level, LevelFilter::Debug); + assert!(filter.is_some() && filter.unwrap().to_string() == "abc"); + } + + #[test] + fn parse_spec_invalid_crate_filter() { + let (dirs, filter) = parse_spec("crate1::mod1=error=warn,crate2=debug/a.c"); + assert_eq!(dirs.len(), 1); + assert_eq!(dirs[0].name, Some("crate2".to_string())); + assert_eq!(dirs[0].level, LevelFilter::Debug); + assert!(filter.is_some() && filter.unwrap().to_string() == "a.c"); + } + + #[test] + fn parse_spec_empty_with_filter() { + let (dirs, filter) = parse_spec("crate1/a*c"); + assert_eq!(dirs.len(), 1); + assert_eq!(dirs[0].name, Some("crate1".to_string())); + assert_eq!(dirs[0].level, LevelFilter::max()); + assert!(filter.is_some() && filter.unwrap().to_string() == "a*c"); + } +} diff --git a/vendor/env_logger/src/filter/regex.rs b/vendor/env_logger/src/filter/regex.rs new file mode 100644 index 000000000..fb21528a1 --- /dev/null +++ b/vendor/env_logger/src/filter/regex.rs @@ -0,0 +1,29 @@ +extern crate regex; + +use std::fmt; + +use self::regex::Regex; + +#[derive(Debug)] +pub struct Filter { + inner: Regex, +} + +impl Filter { + pub fn new(spec: &str) -> Result<Filter, String> { + match Regex::new(spec) { + Ok(r) => Ok(Filter { inner: r }), + Err(e) => Err(e.to_string()), + } + } + + pub fn is_match(&self, s: &str) -> bool { + self.inner.is_match(s) + } +} + +impl fmt::Display for Filter { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.inner.fmt(f) + } +} diff --git a/vendor/env_logger/src/filter/string.rs b/vendor/env_logger/src/filter/string.rs new file mode 100644 index 000000000..ea476e42f --- /dev/null +++ b/vendor/env_logger/src/filter/string.rs @@ -0,0 +1,24 @@ +use std::fmt; + +#[derive(Debug)] +pub struct Filter { + inner: String, +} + +impl Filter { + pub fn new(spec: &str) -> Result<Filter, String> { + Ok(Filter { + inner: spec.to_string(), + }) + } + + pub fn is_match(&self, s: &str) -> bool { + s.contains(&self.inner) + } +} + +impl fmt::Display for Filter { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.inner.fmt(f) + } +} |