adding support for iOS based on upstream

Cargo.toml

@@ -12,5 +12,8 @@ description = "Get the filesystem path of a file."
 [target.'cfg(target_os="macos")'.dependencies]
 libc = "0.2"
 
+[target.'cfg(target_os="ios")'.dependencies]
+libc = {version = "0.2", default_features = false}
+
 [target.'cfg(windows)'.dependencies]
 winapi = { version = "0.3", features = ["std", "fileapi"] }

src/lib.rs

@@ -3,7 +3,7 @@
 //! `filepath` contains an extension trait for `std::fs::File` providing a `path` method.
 //!
 
-#[cfg(target_os = "macos")]
+#[cfg(any(target_os = "macos", target_os = "ios"))]
 extern crate libc;
 #[cfg(windows)]
 extern crate winapi;
@@ -24,18 +24,18 @@ use std::os::unix::io::AsRawFd;
 #[cfg(windows)]
 use std::os::windows::io::AsRawHandle;
 
-#[cfg(any(target_os = "macos", windows))]
+#[cfg(any(target_os = "macos", target_os = "ios", windows))]
 use std::ffi::OsString;
 
-#[cfg(target_os = "macos")]
+#[cfg(any(target_os = "macos", target_os = "ios"))]
 use std::os::unix::ffi::OsStringExt;
 #[cfg(windows)]
 use std::os::windows::prelude::*;
 
 #[cfg(windows)]
 use winapi::um::fileapi;
 
-#[cfg(target_os = "macos")]
+#[cfg(any(target_os = "macos", target_os = "ios"))]
 const F_GETPATH: i32 = 50;
 
 /// An extension trait for `std::fs::File` providing a `path` method.
@@ -72,7 +72,7 @@ impl FilePath for File {
         read_link(path)
     }
 
-    #[cfg(target_os = "macos")]
+    #[cfg(any(target_os = "macos", target_os = "ios"))]
     fn path(&self) -> io::Result<PathBuf> {
         let fd = self.as_raw_fd();
         let mut path = vec![0; libc::PATH_MAX as usize + 1];