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std: Move platform specific path code into sys
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| // Copyright 2015 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. | ||
|
|
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| use path::Prefix; | ||
| use ffi::OsStr; | ||
|
|
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| #[inline] | ||
| pub fn is_sep_byte(b: u8) -> bool { | ||
| b == b'/' | ||
| } | ||
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| #[inline] | ||
| pub fn is_verbatim_sep(b: u8) -> bool { | ||
| b == b'/' | ||
| } | ||
|
|
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| pub fn parse_prefix(_: &OsStr) -> Option<Prefix> { | ||
| None | ||
| } | ||
|
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| pub const MAIN_SEP_STR: &'static str = "/"; | ||
| pub const MAIN_SEP: char = '/'; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| // Copyright 2015 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. | ||
|
|
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| use ascii::*; | ||
|
|
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| use path::Prefix; | ||
| use ffi::OsStr; | ||
| use mem; | ||
|
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| fn os_str_as_u8_slice(s: &OsStr) -> &[u8] { | ||
| unsafe { mem::transmute(s) } | ||
| } | ||
| unsafe fn u8_slice_as_os_str(s: &[u8]) -> &OsStr { | ||
| mem::transmute(s) | ||
| } | ||
|
|
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| #[inline] | ||
| pub fn is_sep_byte(b: u8) -> bool { | ||
| b == b'/' || b == b'\\' | ||
| } | ||
|
|
||
| #[inline] | ||
| pub fn is_verbatim_sep(b: u8) -> bool { | ||
| b == b'\\' | ||
| } | ||
|
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| pub fn parse_prefix<'a>(path: &'a OsStr) -> Option<Prefix> { | ||
| use path::Prefix::*; | ||
| unsafe { | ||
| // The unsafety here stems from converting between &OsStr and &[u8] | ||
| // and back. This is safe to do because (1) we only look at ASCII | ||
| // contents of the encoding and (2) new &OsStr values are produced | ||
| // only from ASCII-bounded slices of existing &OsStr values. | ||
| let mut path = os_str_as_u8_slice(path); | ||
|
|
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| if path.starts_with(br"\\") { | ||
| // \\ | ||
| path = &path[2..]; | ||
| if path.starts_with(br"?\") { | ||
| // \\?\ | ||
| path = &path[2..]; | ||
| if path.starts_with(br"UNC\") { | ||
| // \\?\UNC\server\share | ||
| path = &path[4..]; | ||
| let (server, share) = match parse_two_comps(path, is_verbatim_sep) { | ||
| Some((server, share)) => | ||
| (u8_slice_as_os_str(server), u8_slice_as_os_str(share)), | ||
| None => (u8_slice_as_os_str(path), u8_slice_as_os_str(&[])), | ||
| }; | ||
| return Some(VerbatimUNC(server, share)); | ||
| } else { | ||
| // \\?\path | ||
| let idx = path.iter().position(|&b| b == b'\\'); | ||
| if idx == Some(2) && path[1] == b':' { | ||
| let c = path[0]; | ||
| if c.is_ascii() && (c as char).is_alphabetic() { | ||
| // \\?\C:\ path | ||
| return Some(VerbatimDisk(c.to_ascii_uppercase())); | ||
| } | ||
| } | ||
| let slice = &path[..idx.unwrap_or(path.len())]; | ||
| return Some(Verbatim(u8_slice_as_os_str(slice))); | ||
| } | ||
| } else if path.starts_with(b".\\") { | ||
| // \\.\path | ||
| path = &path[2..]; | ||
| let pos = path.iter().position(|&b| b == b'\\'); | ||
| let slice = &path[..pos.unwrap_or(path.len())]; | ||
| return Some(DeviceNS(u8_slice_as_os_str(slice))); | ||
| } | ||
| match parse_two_comps(path, is_sep_byte) { | ||
| Some((server, share)) if !server.is_empty() && !share.is_empty() => { | ||
| // \\server\share | ||
| return Some(UNC(u8_slice_as_os_str(server), u8_slice_as_os_str(share))); | ||
| } | ||
| _ => (), | ||
| } | ||
| } else if path.get(1) == Some(& b':') { | ||
| // C: | ||
| let c = path[0]; | ||
| if c.is_ascii() && (c as char).is_alphabetic() { | ||
| return Some(Disk(c.to_ascii_uppercase())); | ||
| } | ||
| } | ||
| return None; | ||
| } | ||
|
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| fn parse_two_comps(mut path: &[u8], f: fn(u8) -> bool) -> Option<(&[u8], &[u8])> { | ||
| let first = match path.iter().position(|x| f(*x)) { | ||
| None => return None, | ||
| Some(x) => &path[..x], | ||
| }; | ||
| path = &path[(first.len() + 1)..]; | ||
| let idx = path.iter().position(|x| f(*x)); | ||
| let second = &path[..idx.unwrap_or(path.len())]; | ||
| Some((first, second)) | ||
| } | ||
| } | ||
|
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| pub const MAIN_SEP_STR: &'static str = "\\"; | ||
| pub const MAIN_SEP: char = '\\'; |