std/backtrace/src/
types.rs
1cfg_if::cfg_if! {
4 if #[cfg(feature = "std")] {
5 use std::borrow::Cow;
6 use std::fmt;
7 use std::path::PathBuf;
8 use std::prelude::v1::*;
9 use std::str;
10 }
11}
12
13#[derive(Debug)]
17pub enum BytesOrWideString<'a> {
18 Bytes(&'a [u8]),
20 Wide(&'a [u16]),
22}
23
24#[cfg(feature = "std")]
25impl<'a> BytesOrWideString<'a> {
26 pub fn to_str_lossy(&self) -> Cow<'a, str> {
34 use self::BytesOrWideString::*;
35
36 match *self {
37 Bytes(slice) => String::from_utf8_lossy(slice),
38 Wide(wide) => Cow::Owned(String::from_utf16_lossy(wide)),
39 }
40 }
41
42 pub fn into_path_buf(self) -> PathBuf {
49 #[cfg(unix)]
50 {
51 use std::ffi::OsStr;
52 use std::os::unix::ffi::OsStrExt;
53
54 if let BytesOrWideString::Bytes(slice) = self {
55 return PathBuf::from(OsStr::from_bytes(slice));
56 }
57 }
58
59 #[cfg(windows)]
60 {
61 use std::ffi::OsString;
62 use std::os::windows::ffi::OsStringExt;
63
64 if let BytesOrWideString::Wide(slice) = self {
65 return PathBuf::from(OsString::from_wide(slice));
66 }
67 }
68
69 if let BytesOrWideString::Bytes(b) = self {
70 if let Ok(s) = str::from_utf8(b) {
71 return PathBuf::from(s);
72 }
73 }
74 unreachable!()
75 }
76}
77
78#[cfg(feature = "std")]
79impl<'a> fmt::Display for BytesOrWideString<'a> {
80 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
81 self.to_str_lossy().fmt(f)
82 }
83}