diff options
Diffstat (limited to 'src/libextra')
| -rw-r--r-- | src/libextra/flate.rs | 129 | ||||
| -rw-r--r-- | src/libextra/lib.rs | 1 |
2 files changed, 0 insertions, 130 deletions
diff --git a/src/libextra/flate.rs b/src/libextra/flate.rs deleted file mode 100644 index faceb17af47..00000000000 --- a/src/libextra/flate.rs +++ /dev/null @@ -1,129 +0,0 @@ -// Copyright 2012 The Rust Project Developers. See the COPYRIGHT -// file at the top-level directory of this distribution and at -// http://rust-lang.org/COPYRIGHT. -// -// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or -// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license -// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your -// option. This file may not be copied, modified, or distributed -// except according to those terms. - -/*! - -Simple compression - -*/ - -#[allow(missing_doc)]; - -use std::libc::{c_void, size_t, c_int}; -use std::libc; -use std::vec; - -pub mod rustrt { - use std::libc::{c_int, c_void, size_t}; - - #[link(name = "rustrt", kind = "static")] - extern { - pub fn tdefl_compress_mem_to_heap(psrc_buf: *c_void, - src_buf_len: size_t, - pout_len: *mut size_t, - flags: c_int) - -> *c_void; - - pub fn tinfl_decompress_mem_to_heap(psrc_buf: *c_void, - src_buf_len: size_t, - pout_len: *mut size_t, - flags: c_int) - -> *c_void; - } -} - -static LZ_NORM : c_int = 0x80; // LZ with 128 probes, "normal" -static TINFL_FLAG_PARSE_ZLIB_HEADER : c_int = 0x1; // parse zlib header and adler32 checksum -static TDEFL_WRITE_ZLIB_HEADER : c_int = 0x01000; // write zlib header and adler32 checksum - -fn deflate_bytes_internal(bytes: &[u8], flags: c_int) -> ~[u8] { - unsafe { - let mut outsz : size_t = 0; - let res = rustrt::tdefl_compress_mem_to_heap(bytes.as_ptr() as *c_void, - bytes.len() as size_t, - &mut outsz, - flags); - assert!(res as int != 0); - let out = vec::raw::from_buf_raw(res as *u8, - outsz as uint); - libc::free(res as *mut c_void); - out - } -} - -pub fn deflate_bytes(bytes: &[u8]) -> ~[u8] { - deflate_bytes_internal(bytes, LZ_NORM) -} - -pub fn deflate_bytes_zlib(bytes: &[u8]) -> ~[u8] { - deflate_bytes_internal(bytes, LZ_NORM | TDEFL_WRITE_ZLIB_HEADER) -} - -fn inflate_bytes_internal(bytes: &[u8], flags: c_int) -> ~[u8] { - unsafe { - let mut outsz : size_t = 0; - let res = rustrt::tinfl_decompress_mem_to_heap(bytes.as_ptr() as *c_void, - bytes.len() as size_t, - &mut outsz, - flags); - assert!(res as int != 0); - let out = vec::raw::from_buf_raw(res as *u8, - outsz as uint); - libc::free(res as *mut c_void); - out - } -} - -pub fn inflate_bytes(bytes: &[u8]) -> ~[u8] { - inflate_bytes_internal(bytes, 0) -} - -pub fn inflate_bytes_zlib(bytes: &[u8]) -> ~[u8] { - inflate_bytes_internal(bytes, TINFL_FLAG_PARSE_ZLIB_HEADER) -} - -#[cfg(test)] -mod tests { - use super::*; - use std::rand; - use std::rand::Rng; - - #[test] - fn test_flate_round_trip() { - let mut r = rand::rng(); - let mut words = ~[]; - 20.times(|| { - let range = r.gen_range(1u, 10); - words.push(r.gen_vec::<u8>(range)); - }); - 20.times(|| { - let mut input = ~[]; - 2000.times(|| { - input.push_all(r.choose(words)); - }); - debug!("de/inflate of {} bytes of random word-sequences", - input.len()); - let cmp = deflate_bytes(input); - let out = inflate_bytes(cmp); - debug!("{} bytes deflated to {} ({:.1f}% size)", - input.len(), cmp.len(), - 100.0 * ((cmp.len() as f64) / (input.len() as f64))); - assert_eq!(input, out); - }); - } - - #[test] - fn test_zlib_flate() { - let bytes = ~[1, 2, 3, 4, 5]; - let deflated = deflate_bytes(bytes); - let inflated = inflate_bytes(deflated); - assert_eq!(inflated, bytes); - } -} diff --git a/src/libextra/lib.rs b/src/libextra/lib.rs index fc0cc045175..5a4fedd2b2a 100644 --- a/src/libextra/lib.rs +++ b/src/libextra/lib.rs @@ -82,7 +82,6 @@ pub mod rational; pub mod complex; pub mod stats; pub mod semver; -pub mod flate; pub mod hex; pub mod uuid; |