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1 | // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
11 | /// The underlying OsString/OsStr implementation on Unix systems: just | |
12 | /// a `Vec<u8>`/`[u8]`. | |
13 | ||
c34b1796 | 14 | use borrow::Cow; |
85aaf69f | 15 | use fmt::{self, Debug}; |
85aaf69f | 16 | use str; |
85aaf69f | 17 | use mem; |
7453a54e | 18 | use sys_common::{AsInner, IntoInner}; |
85aaf69f SL |
19 | |
20 | #[derive(Clone, Hash)] | |
21 | pub struct Buf { | |
22 | pub inner: Vec<u8> | |
23 | } | |
24 | ||
25 | pub struct Slice { | |
26 | pub inner: [u8] | |
27 | } | |
28 | ||
29 | impl Debug for Slice { | |
30 | fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> { | |
31 | self.to_string_lossy().fmt(formatter) | |
32 | } | |
33 | } | |
34 | ||
35 | impl Debug for Buf { | |
36 | fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> { | |
37 | self.as_slice().fmt(formatter) | |
38 | } | |
39 | } | |
40 | ||
7453a54e SL |
41 | impl IntoInner<Vec<u8>> for Buf { |
42 | fn into_inner(self) -> Vec<u8> { | |
43 | self.inner | |
44 | } | |
45 | } | |
46 | ||
47 | impl AsInner<[u8]> for Buf { | |
48 | fn as_inner(&self) -> &[u8] { | |
49 | &self.inner | |
50 | } | |
51 | } | |
52 | ||
53 | ||
85aaf69f SL |
54 | impl Buf { |
55 | pub fn from_string(s: String) -> Buf { | |
56 | Buf { inner: s.into_bytes() } | |
57 | } | |
58 | ||
7453a54e SL |
59 | #[inline] |
60 | pub fn with_capacity(capacity: usize) -> Buf { | |
61 | Buf { | |
62 | inner: Vec::with_capacity(capacity) | |
63 | } | |
64 | } | |
65 | ||
66 | #[inline] | |
67 | pub fn clear(&mut self) { | |
68 | self.inner.clear() | |
69 | } | |
70 | ||
71 | #[inline] | |
72 | pub fn capacity(&self) -> usize { | |
73 | self.inner.capacity() | |
74 | } | |
75 | ||
76 | #[inline] | |
77 | pub fn reserve(&mut self, additional: usize) { | |
78 | self.inner.reserve(additional) | |
79 | } | |
80 | ||
81 | #[inline] | |
82 | pub fn reserve_exact(&mut self, additional: usize) { | |
83 | self.inner.reserve_exact(additional) | |
84 | } | |
85 | ||
85aaf69f SL |
86 | pub fn as_slice(&self) -> &Slice { |
87 | unsafe { mem::transmute(&*self.inner) } | |
88 | } | |
89 | ||
90 | pub fn into_string(self) -> Result<String, Buf> { | |
91 | String::from_utf8(self.inner).map_err(|p| Buf { inner: p.into_bytes() } ) | |
92 | } | |
93 | ||
94 | pub fn push_slice(&mut self, s: &Slice) { | |
92a42be0 | 95 | self.inner.extend_from_slice(&s.inner) |
85aaf69f SL |
96 | } |
97 | } | |
98 | ||
99 | impl Slice { | |
100 | fn from_u8_slice(s: &[u8]) -> &Slice { | |
101 | unsafe { mem::transmute(s) } | |
102 | } | |
103 | ||
104 | pub fn from_str(s: &str) -> &Slice { | |
c34b1796 | 105 | Slice::from_u8_slice(s.as_bytes()) |
85aaf69f SL |
106 | } |
107 | ||
108 | pub fn to_str(&self) -> Option<&str> { | |
109 | str::from_utf8(&self.inner).ok() | |
110 | } | |
111 | ||
c34b1796 | 112 | pub fn to_string_lossy(&self) -> Cow<str> { |
85aaf69f SL |
113 | String::from_utf8_lossy(&self.inner) |
114 | } | |
115 | ||
116 | pub fn to_owned(&self) -> Buf { | |
117 | Buf { inner: self.inner.to_vec() } | |
118 | } | |
119 | } |