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std: Add helpers to simplify making str io::writers

This commit is contained in:
Erick Tryzelaar 2012-02-21 09:22:50 -08:00 committed by Brian Anderson
parent b9948baf78
commit ec51d8fd03
1 changed files with 13 additions and 0 deletions
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13
src/libstd/io.rs
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@ -508,6 +508,19 @@ fn mem_buffer_buf(b: mem_buffer) -> [u8] { vec::from_mut(b.buf) }
fn mem_buffer_str(b: mem_buffer) -> str {
let b_ = vec::from_mut(b.buf);
str::from_bytes(b_)
fn with_str_writer(f: fn(writer)) -> str {
let buf = mk_mem_buffer();
let wr = mem_buffer_writer(buf);
f(wr);
io::mem_buffer_str(buf)
}
fn with_buf_writer(f: fn(writer)) -> [u8] {
let buf = mk_mem_buffer();
let wr = mem_buffer_writer(buf);
f(wr);
io::mem_buffer_buf(buf)
}
// Utility functions