Struct grep_searcher::sinks::Lossy

pub struct Lossy<F>(pub F)
 where
    F: FnMut(u64, &str) -> Result<bool, Error>;

A sink that provides line numbers and matches as (lossily converted) strings while ignoring everything else.

This is like UTF8, except that if a match contains invalid UTF-8, then it will be lossily converted to valid UTF-8 by substituting invalid UTF-8 with Unicode replacement characters.

This implementation will return an error on the first match if the searcher was not configured to count lines.

The closure accepts two parameters: a line number and a UTF-8 string containing the matched data. The closure returns a Result<bool, io::Error>. If the bool is false, then the search stops immediately. Otherwise, searching continues.

If multi line mode was enabled, the line number refers to the line number of the first line in the match.

Trait Implementations

impl<F> Sink for Lossy<F> where
    F: FnMut(u64, &str) -> Result<bool, Error>, 

type Error = Error

The type of an error that should be reported by a searcher.

fn matched(
    &mut self,
    _searcher: &Searcher,
    mat: &SinkMatch
) -> Result<bool, Error>

This method is called whenever a match is found.

fn context(
    &mut self,
    _searcher: &Searcher,
    _context: &SinkContext
) -> Result<bool, Self::Error>

This method is called whenever a context line is found, and is optional to implement. By default, it does nothing and returns true.

fn context_break(&mut self, _searcher: &Searcher) -> Result<bool, Self::Error>

This method is called whenever a break in contextual lines is found, and is optional to implement. By default, it does nothing and returns true.

fn binary_data(
    &mut self,
    _searcher: &Searcher,
    _binary_byte_offset: u64
) -> Result<bool, Self::Error>

This method is called whenever binary detection is enabled and binary data is found. If binary data is found, then this is called at least once for the first occurrence with the absolute byte offset at which the binary data begins.

fn begin(&mut self, _searcher: &Searcher) -> Result<bool, Self::Error>

This method is called when a search has begun, before any search is executed. By default, this does nothing.

fn finish(
    &mut self,
    _searcher: &Searcher,
    _: &SinkFinish
) -> Result<(), Self::Error>

This method is called when a search has completed. By default, this does nothing.

impl<F: Clone> Clone for Lossy<F> where
    F: FnMut(u64, &str) -> Result<bool, Error>, 

fn clone(&self) -> Lossy<F>

Returns a copy of the value.

default fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<F: Debug> Debug for Lossy<F> where
    F: FnMut(u64, &str) -> Result<bool, Error>, 

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.