logparse_pretty_print/render/
write_fmt.rs

1use crate::{Render, RenderAnnotated, Text, render::Annotation};
2use alloc::rc::Rc;
3use color_ansi::AnsiStyle;
4use core::fmt::{Debug, Error, Formatter};
5
6/// Writes to something implementing `std::fmt::Write`
7pub struct FmtWrite<W> {
8    upstream: W,
9}
10/// Represents a terminal writer.
11#[derive(Debug)]
12pub struct BufferWrite<T> {
13    buffer: Vec<T>,
14    annotations: Vec<(usize, Annotation<AnsiStyle>)>,
15}
16
17impl<'a, T: Text<'a>> BufferWrite<T> {
18    /// Creates a new terminal writer.
19    pub fn new(capacity: usize) -> Self {
20        BufferWrite { buffer: Vec::with_capacity(capacity), annotations: Vec::new() }
21    }
22    /// Creates a new terminal writer.
23    pub fn render<W>(&mut self, render: &mut W) -> Result<(), W::Error>
24    where
25        W: RenderAnnotated<'a, T>,
26        W: ?Sized,
27    {
28        let mut start = 0;
29        for (end, annotation) in &self.annotations {
30            let s = &self.buffer[start..*end];
31            if !s.is_empty() {
32                render.write_all(s)?;
33            }
34            start = *end;
35            match annotation {
36                Annotation::Push(a) => render.push_annotation(a.clone())?,
37                Annotation::Pop => render.pop_annotation()?,
38            }
39        }
40        let s = &self.buffer[start..];
41        if !s.is_empty() {
42            render.write_all(s)?;
43        }
44        Ok(())
45    }
46}
47
48impl<'a, T: Clone> Render<'a, T> for BufferWrite<T> {
49    type Error = Error;
50
51    fn write_all(&mut self, s: &[T]) -> Result<(), Self::Error> {
52        self.buffer.extend(s.iter().cloned());
53        Ok(())
54    }
55
56    fn fail_doc(&self) -> Self::Error {
57        Error
58    }
59}
60
61impl<'a, W, T: Text<'a>> RenderAnnotated<'a, T> for FmtWrite<W>
62where
63    W: core::fmt::Write,
64{
65    fn push_annotation(&mut self, _: Rc<AnsiStyle>) -> Result<(), Self::Error> {
66        Ok(())
67    }
68
69    fn pop_annotation(&mut self) -> Result<(), Self::Error> {
70        Ok(())
71    }
72}
73
74impl<'a, T: Clone> RenderAnnotated<'a, T> for BufferWrite<T> {
75    fn push_annotation(&mut self, annotation: Rc<AnsiStyle>) -> Result<(), Self::Error> {
76        self.annotations.push((self.buffer.len(), Annotation::Push(annotation)));
77        Ok(())
78    }
79
80    fn pop_annotation(&mut self) -> Result<(), Self::Error> {
81        self.annotations.push((self.buffer.len(), Annotation::Pop));
82        Ok(())
83    }
84}
85
86impl<W> Debug for FmtWrite<W> {
87    fn fmt(&self, f: &mut Formatter<'_>) -> core::fmt::Result {
88        f.debug_struct("IoWrite").finish()
89    }
90}
91
92impl<W> FmtWrite<W> {
93    /// Create a new `FmtWrite` from something implementing `std::fmt::Write`
94    pub fn new(upstream: W) -> FmtWrite<W> {
95        FmtWrite { upstream }
96    }
97}
98
99impl<'a, W, T: Text<'a>> Render<'a, T> for FmtWrite<W>
100where
101    W: core::fmt::Write,
102{
103    type Error = Error;
104
105    fn write_all(&mut self, s: &[T]) -> core::fmt::Result {
106        for i in s {
107            self.upstream.write_str(i.as_str().as_ref())?
108        }
109        Ok(())
110    }
111
112    fn fail_doc(&self) -> Self::Error {
113        Error
114    }
115}
logparse_pretty_print/render/write_fmt.rs

logparse_pretty_print/render/
write_fmt.rs
