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2ac213a3ce
ReadBuffer and WriterBuffer buffer stream reads and writes to a stream. Useful in situations where the underlying stream is sensitive to the number of read or write calls. Signed-off-by: Pierre Curto <pierre.curto@gmail.com>
69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
module std::io @test;
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const DATA = "Lorem ipsum blandit.";
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fn void! readbuffer_large()
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{
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ByteReader src;
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src.init(DATA);
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char[DATA.len] buf;
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ReadBuffer reader_buf;
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reader_buf.init(src.as_stream(), buf[..]);
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char[DATA.len] bytes;
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usz n = reader_buf.read(bytes[..])!;
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assert(n == DATA.len, "large read failed: got %d; want %d", n, DATA.len);
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String got = (String)bytes[..];
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assert(got == DATA, "large read failed: got %d; want %d", got, DATA);
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}
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fn void! readbuffer()
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{
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ByteReader src;
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src.init(DATA);
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char[3] buf;
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ReadBuffer reader_buf;
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reader_buf.init(src.as_stream(), buf[..]);
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ByteWriter bw;
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bw.tinit();
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usz n = reader_buf.as_stream().copy_to(bw.as_stream())!;
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assert(n == DATA.len, "got %d; want %d", n, DATA.len);
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String got = bw.as_str();
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assert(got == DATA, "got %d; want %d", got, DATA);
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}
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fn void! writebuffer_large()
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{
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ByteWriter out;
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out.tinit();
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char[16] buf;
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WriteBuffer write_buf;
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write_buf.init(out.as_stream(), buf[..]);
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usz n = write_buf.write(DATA)!;
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assert(n == DATA.len, "large write failed: got %d; want %d", n, DATA.len);
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String got = out.as_str();
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assert(got == DATA, "large write failed: got %d; want %d", got, DATA);
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}
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fn void! writebuffer()
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{
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ByteReader br;
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br.init(DATA);
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ByteWriter out;
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out.tinit();
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char[3] buf;
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WriteBuffer write_buf;
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write_buf.init(out.as_stream(), buf[..]);
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usz n = br.as_stream().copy_to(write_buf.as_stream())!;
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assert(n == DATA.len, "got %d; want %d", n, DATA.len);
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String got = out.as_str();
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assert(got == DATA, "got %d; want %d", got, DATA);
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} |