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std.io.BufferedReader: add readRemaining

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This commit is contained in:
Andrew Kelley 2025-05-01 19:20:42 -07:00
parent cbe5920975
commit b3da216f1b
1 changed files with 14 additions and 0 deletions
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14
lib/std/io/BufferedReader.zig
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@ -90,6 +90,20 @@ pub fn readAll(br: *BufferedReader, bw: *BufferedWriter, limit: Reader.Limit) Re
}
}
/// "Pump" data from the reader to the writer, handling `error.EndOfStream` as
/// a success case.
///
/// Returns total number of bytes written to `bw`.
pub fn readRemaining(br: *BufferedReader, bw: *BufferedWriter) Reader.RwRemainingError!usize {
var offset: usize = 0;
while (true) {
offset += br.read(bw, .unlimited) catch |err| switch (err) {
error.EndOfStream => return offset,
else => |e| return e,
};
}
}
/// Equivalent to `readVec` but reads at most `limit` bytes.
pub fn readVecLimit(br: *BufferedReader, data: []const []u8, limit: Reader.Limit) Reader.Error!usize {
_ = br;