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std: add LinearFifo().inStream

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daurnimator 2020-04-02 21:14:15 +11:00
parent 2a031c8825
commit 34524a1792
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1 changed files with 19 additions and 0 deletions
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19
lib/std/fifo.zig
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@ -215,6 +215,16 @@ pub fn LinearFifo(
return dst.len - dst_left.len;
}
/// Same as `read` except it returns an error union
/// The purpose of this function existing is to match `std.io.InStream` API.
fn readFn(self: *Self, dest: []u8) error{}!usize {
return self.read(dest);
}
pub fn inStream(self: *Self) std.io.InStream(*Self, error{}, readFn) {
return .{ .context = self };
}
/// Returns number of items available in fifo
pub fn writableLength(self: Self) usize {
return self.buf.len - self.count;
@ -414,6 +424,15 @@ test "LinearFifo(u8, .Dynamic)" {
testing.expectEqualSlices(u8, "Hello, World!", result[0..fifo.read(&result)]);
testing.expectEqual(@as(usize, 0), fifo.readableLength());
}
{
try fifo.outStream().writeAll("This is a test");
var result: [30]u8 = undefined;
testing.expectEqualSlices(u8, "This", (try fifo.inStream().readUntilDelimiterOrEof(&result, ' ')).?);
testing.expectEqualSlices(u8, "is", (try fifo.inStream().readUntilDelimiterOrEof(&result, ' ')).?);
testing.expectEqualSlices(u8, "a", (try fifo.inStream().readUntilDelimiterOrEof(&result, ' ')).?);
testing.expectEqualSlices(u8, "test", (try fifo.inStream().readUntilDelimiterOrEof(&result, ' ')).?);
}
}
test "LinearFifo" {