use std::io::{self, Write};
use std::sync::Mutex;
use termcolor::{self, ColorSpec, WriteColor};
use crate::fmt::{WritableTarget, WriteStyle};
pub(in crate::fmt::writer) struct BufferWriter {
inner: termcolor::BufferWriter,
uncolored_target: Option<WritableTarget>,
write_style: WriteStyle,
}
impl BufferWriter {
pub(in crate::fmt::writer) fn stderr(is_test: bool, write_style: WriteStyle) -> Self {
BufferWriter {
inner: termcolor::BufferWriter::stderr(write_style.into_color_choice()),
uncolored_target: if is_test {
Some(WritableTarget::PrintStderr)
} else {
None
},
write_style,
}
}
pub(in crate::fmt::writer) fn stdout(is_test: bool, write_style: WriteStyle) -> Self {
BufferWriter {
inner: termcolor::BufferWriter::stdout(write_style.into_color_choice()),
uncolored_target: if is_test {
Some(WritableTarget::PrintStdout)
} else {
None
},
write_style,
}
}
pub(in crate::fmt::writer) fn pipe(pipe: Box<Mutex<dyn io::Write + Send + 'static>>) -> Self {
let write_style = WriteStyle::Never;
BufferWriter {
inner: termcolor::BufferWriter::stderr(write_style.into_color_choice()),
uncolored_target: Some(WritableTarget::Pipe(pipe)),
write_style,
}
}
pub(in crate::fmt::writer) fn write_style(&self) -> WriteStyle {
self.write_style
}
pub(in crate::fmt::writer) fn buffer(&self) -> Buffer {
Buffer {
inner: self.inner.buffer(),
has_uncolored_target: self.uncolored_target.is_some(),
}
}
pub(in crate::fmt::writer) fn print(&self, buf: &Buffer) -> io::Result<()> {
if let Some(target) = &self.uncolored_target {
target.print(buf)
} else {
self.inner.print(&buf.inner)
}
}
}
pub(in crate::fmt) struct Buffer {
inner: termcolor::Buffer,
has_uncolored_target: bool,
}
impl Buffer {
pub(in crate::fmt) fn clear(&mut self) {
self.inner.clear()
}
pub(in crate::fmt) fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
self.inner.write(buf)
}
pub(in crate::fmt) fn flush(&mut self) -> io::Result<()> {
self.inner.flush()
}
pub(in crate::fmt) fn as_bytes(&self) -> &[u8] {
self.inner.as_slice()
}
pub(in crate::fmt) fn set_color(&mut self, spec: &ColorSpec) -> io::Result<()> {
if !self.has_uncolored_target {
self.inner.set_color(spec)
} else {
Ok(())
}
}
pub(in crate::fmt) fn reset(&mut self) -> io::Result<()> {
if !self.has_uncolored_target {
self.inner.reset()
} else {
Ok(())
}
}
}