03ef71e262
.with_c_str() is a replacement for the old .as_c_str(), to avoid unnecessary boilerplate. Replace all usages of .to_c_str().with_ref() with .with_c_str().
39 lines
931 B
Rust
39 lines
931 B
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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extern mod extra;
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use std::libc;
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use std::str;
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use std::vec;
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mod libc {
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#[nolink]
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#[abi = "cdecl"]
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extern {
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#[link_name = "strlen"]
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pub fn my_strlen(str: *u8) -> uint;
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}
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}
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fn strlen(str: ~str) -> uint {
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unsafe {
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// C string is terminated with a zero
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do str.with_c_str |buf| {
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libc::my_strlen(buf as *u8)
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}
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}
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}
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pub fn main() {
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let len = strlen(~"Rust");
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assert_eq!(len, 4u);
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}
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