| use cached::proc_macro::cached; |
| use log::{log_enabled, trace}; |
| use ordered_float::OrderedFloat; |
|
|
| pub(crate) mod plugins; |
| pub(crate) mod structs; |
|
|
| use plugins::{ |
| ArchaicUpperLowerPlugin, CjkInvalidStopPlugin, MessDetectorPlugin, SuperWeirdWordPlugin, |
| SuspiciousDuplicateAccentPlugin, SuspiciousRangePlugin, TooManyAccentuatedPlugin, |
| TooManySymbolOrPunctuationPlugin, UnprintablePlugin, |
| }; |
| use structs::MessDetectorChar; |
|
|
| |
| |
| |
|
|
| |
| #[cached(size = 2048)] |
| pub(crate) fn mess_ratio( |
| decoded_sequence: String, |
| maximum_threshold: Option<OrderedFloat<f32>>, |
| ) -> f32 { |
| let maximum_threshold = f32::from(maximum_threshold.unwrap_or(OrderedFloat(0.2))); |
| let mut detectors: Vec<Box<dyn MessDetectorPlugin>> = vec![ |
| Box::<TooManySymbolOrPunctuationPlugin>::default(), |
| Box::<TooManyAccentuatedPlugin>::default(), |
| Box::<UnprintablePlugin>::default(), |
| Box::<SuspiciousRangePlugin>::default(), |
| Box::<SuspiciousDuplicateAccentPlugin>::default(), |
| Box::<SuperWeirdWordPlugin>::default(), |
| Box::<CjkInvalidStopPlugin>::default(), |
| Box::<ArchaicUpperLowerPlugin>::default(), |
| ]; |
|
|
| let mut mean_mess_ratio: Option<f32> = None; |
| let early_calc_period: usize = match decoded_sequence.chars().count() { |
| ..=510 => 32, |
| 511..=1023 => 64, |
| _ => 128, |
| }; |
| |
| for (index, ch) in decoded_sequence |
| .chars() |
| .chain(std::iter::once('\n')) |
| .enumerate() |
| { |
| let mess_char = MessDetectorChar::new(ch); |
| detectors |
| .iter_mut() |
| .filter(|detector| detector.eligible(&mess_char)) |
| .for_each(|detector| detector.feed(&mess_char)); |
|
|
| if index % early_calc_period == early_calc_period - 1 { |
| let early_mess_ratio: f32 = detectors.iter().map(|x| x.ratio()).sum(); |
| if early_mess_ratio >= maximum_threshold { |
| mean_mess_ratio = Some(early_mess_ratio); |
| break; |
| } |
| } |
| } |
| let return_ratio = mean_mess_ratio.unwrap_or(detectors.iter().map(|x| x.ratio()).sum()); |
|
|
| if log_enabled!(log::Level::Trace) { |
| trace!( |
| "Mess-detector extended-analysis start: early_calc_period={}, mean_mess_ratio={}, maximum_threshold={} \ |
| {}", |
| early_calc_period, |
| return_ratio, |
| maximum_threshold, |
| detectors |
| .iter() |
| .filter(|d| d.ratio() > 0.0) |
| .map(|d| format!("{} produces ratio: {}", d.name(), d.ratio())) |
| .collect::<Vec<String>>() |
| .join("===") |
| ); |
| } |
|
|
| return_ratio |
| } |
|
|
