1 files changed, 76 insertions, 0 deletions
diff --git a/vendor/gix-packetline-blocking/src/encode/blocking_io.rs b/vendor/gix-packetline-blocking/src/encode/blocking_io.rs
new file mode 100644
index 000000000..41b705e0b
--- /dev/null
+++ b/vendor/gix-packetline-blocking/src/encode/blocking_io.rs
@@ -0,0 +1,76 @@
+use std::io;
+
+use super::u16_to_hex;
+use crate::{encode::Error, Channel, DELIMITER_LINE, ERR_PREFIX, FLUSH_LINE, MAX_DATA_LEN, RESPONSE_END_LINE};
+
+/// Write a response-end message to `out`.
+pub fn response_end_to_write(mut out: impl io::Write) -> io::Result<usize> {
+    out.write_all(RESPONSE_END_LINE).map(|_| 4)
+}
+
+/// Write a delim message to `out`.
+pub fn delim_to_write(mut out: impl io::Write) -> io::Result<usize> {
+    out.write_all(DELIMITER_LINE).map(|_| 4)
+}
+
+/// Write a flush message to `out`.
+pub fn flush_to_write(mut out: impl io::Write) -> io::Result<usize> {
+    out.write_all(FLUSH_LINE).map(|_| 4)
+}
+
+/// Write an error `message` to `out`.
+pub fn error_to_write(message: &[u8], out: impl io::Write) -> io::Result<usize> {
+    prefixed_data_to_write(ERR_PREFIX, message, out)
+}
+
+/// Write `data` of `kind` to `out` using side-band encoding.
+pub fn band_to_write(kind: Channel, data: &[u8], out: impl io::Write) -> io::Result<usize> {
+    prefixed_data_to_write(&[kind as u8], data, out)
+}
+
+/// Write a `data` message to `out`.
+pub fn data_to_write(data: &[u8], out: impl io::Write) -> io::Result<usize> {
+    prefixed_data_to_write(&[], data, out)
+}
+
+/// Write a `text` message to `out`, which is assured to end in a newline.
+pub fn text_to_write(text: &[u8], out: impl io::Write) -> io::Result<usize> {
+    prefixed_and_suffixed_data_to_write(&[], text, &[b'\n'], out)
+}
+
+fn prefixed_data_to_write(prefix: &[u8], data: &[u8], out: impl io::Write) -> io::Result<usize> {
+    prefixed_and_suffixed_data_to_write(prefix, data, &[], out)
+}
+
+fn prefixed_and_suffixed_data_to_write(
+    prefix: &[u8],
+    data: &[u8],
+    suffix: &[u8],
+    mut out: impl io::Write,
+) -> io::Result<usize> {
+    let data_len = prefix.len() + data.len() + suffix.len();
+    if data_len > MAX_DATA_LEN {
+        return Err(io::Error::new(
+            io::ErrorKind::Other,
+            Error::DataLengthLimitExceeded {
+                length_in_bytes: data_len,
+            },
+        ));
+    }
+    if data.is_empty() {
+        return Err(io::Error::new(io::ErrorKind::Other, Error::DataIsEmpty));
+    }
+
+    let data_len = data_len + 4;
+    let buf = u16_to_hex(data_len as u16);
+
+    out.write_all(&buf)?;
+    if !prefix.is_empty() {
+        out.write_all(prefix)?;
+    }
+    out.write_all(data)?;
+    if !suffix.is_empty() {
+        out.write_all(suffix)?;
+    }
+    Ok(data_len)
+}