1 unstable release
0.1.0 | Aug 1, 2024 |
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#5 in #byte-offset
33 downloads per month
14KB
338 lines
reading-liner
Reading and convert offset and line-column location.
A Stream reader which can convert between byte offset and line-column numbers.
Support any type which implements io::Read
.
Core methods
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Stream::line_index(&mut self, offset:: location::Offset) -> io::Result<location::line_column::ZeroBased>
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Stream::offset_of(&mut self, line_index: location::line_column::ZeroBased) -> io::Result<location::Offset>
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Stream::read_line_index(&mut self, offset:: location::Offset, buf: &mut Vec<u8>) -> io::Result<location::line_column::ZeroBased>
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Stream::read_offset_of(&mut self, line_index: location::line_column::ZeroBased, buf: &mut Vec<u8>) -> io::Result<location::Offset>
Example
use stream_locate_converter::Stream;
use stream_locate_converter::location;
use std::fs;
fn main() -> io::Result<()> {
let file = fs::File::open("foo.rs")?;
let mut stream = Stream::from(file);
let offset = location::Offset::new(20);
let line_index = stream.line_index(offset)?;
let (line, col) = line_index.one_based().raw();
println!("The offset is on line {line}, column {col}.");
}