Import env_logger-0.7.1

Change-Id: I26daac7e33bfb65bcb57e1eee8b61f76e5e84dea

1 files changed, 63 insertions, 0 deletions

diff --git a/src/fmt/writer/termcolor/shim_impl.rs b/src/fmt/writer/termcolor/shim_impl.rs
new file mode 100644
index 0000000..563f8ad
--- /dev/null
+++ b/src/fmt/writer/termcolor/shim_impl.rs
@@ -0,0 +1,63 @@
+use std::io;
+
+use crate::fmt::{Target, WriteStyle};
+
+pub(in crate::fmt::writer) mod glob {}
+
+pub(in crate::fmt::writer) struct BufferWriter {
+    target: Target,
+}
+
+pub(in crate::fmt) struct Buffer(Vec<u8>);
+
+impl BufferWriter {
+    pub(in crate::fmt::writer) fn stderr(_is_test: bool, _write_style: WriteStyle) -> Self {
+        BufferWriter {
+            target: Target::Stderr,
+        }
+    }
+
+    pub(in crate::fmt::writer) fn stdout(_is_test: bool, _write_style: WriteStyle) -> Self {
+        BufferWriter {
+            target: Target::Stdout,
+        }
+    }
+
+    pub(in crate::fmt::writer) fn buffer(&self) -> Buffer {
+        Buffer(Vec::new())
+    }
+
+    pub(in crate::fmt::writer) fn print(&self, buf: &Buffer) -> io::Result<()> {
+        // This impl uses the `eprint` and `print` macros
+        // instead of using the streams directly.
+        // This is so their output can be captured by `cargo test`
+        let log = String::from_utf8_lossy(&buf.0);
+
+        match self.target {
+            Target::Stderr => eprint!("{}", log),
+            Target::Stdout => print!("{}", log),
+        }
+
+        Ok(())
+    }
+}
+
+impl Buffer {
+    pub(in crate::fmt) fn clear(&mut self) {
+        self.0.clear();
+    }
+
+    pub(in crate::fmt) fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+        self.0.extend(buf);
+        Ok(buf.len())
+    }
+
+    pub(in crate::fmt) fn flush(&mut self) -> io::Result<()> {
+        Ok(())
+    }
+
+    #[cfg(test)]
+    pub(in crate::fmt) fn bytes(&self) -> &[u8] {
+        &self.0
+    }
+}