1 files changed, 61 insertions, 0 deletions
diff --git a/notmuch/src/utils.rs b/notmuch/src/utils.rs
new file mode 100644
index 0000000..b5b90f0
--- /dev/null
+++ b/notmuch/src/utils.rs
@@ -0,0 +1,61 @@
+use libc;
+use std::{ffi, str};
+use std::borrow::Cow;
+use supercow::{Supercow, DefaultFeatures/*, NonSyncFeatures*/};
+use supercow::ext::{BoxedStorage};
+
+
+pub trait ToStr {
+    fn to_str<'a>(&self) -> Result<&'a str, str::Utf8Error>;
+
+    fn to_str_unchecked<'a>(&self) -> &'a str;
+
+    fn to_string_lossy<'a>(&self) -> Cow<'a, str>;
+}
+
+impl ToStr for *const libc::c_char {
+    fn to_str<'a>(&self) -> Result<&'a str, str::Utf8Error> {
+        str::from_utf8(unsafe { ffi::CStr::from_ptr(*self) }.to_bytes())
+    }
+
+    fn to_str_unchecked<'a>(&self) -> &'a str {
+        unsafe { str::from_utf8_unchecked(ffi::CStr::from_ptr(*self).to_bytes()) }
+    }
+
+    fn to_string_lossy<'a>(&self) -> Cow<'a, str> {
+        unsafe { ffi::CStr::from_ptr(*self) }.to_string_lossy()
+    }
+}
+
+pub trait ToString {
+    fn to_string(&self) -> String;
+}
+
+impl ToString for *const libc::c_char {
+    fn to_string(&self) -> String {
+        unsafe { ffi::CStr::from_ptr(*self).to_string_lossy().into_owned() }
+    }
+}
+
+
+#[cfg(not(nonsync))]
+pub type ScopedPhantomcow<'a, OWNED, BORROWED = OWNED, 
+                              SHARED = Box<dyn DefaultFeatures<'a> + 'a>,
+                              STORAGE = BoxedStorage> =
+    Supercow<'a, OWNED, BORROWED, SHARED, STORAGE, ()>;
+
+#[cfg(not(nonsync))]
+pub type ScopedSupercow<'a, OWNED, BORROWED = OWNED, SHARED = Box<dyn DefaultFeatures<'a> + 'a>> =
+    Supercow<'a, OWNED, BORROWED, SHARED, BoxedStorage>;
+
+
+#[cfg(nonsync)]
+pub type ScopedPhantomcow<'a, OWNED, BORROWED = OWNED, 
+                              SHARED = Box<dyn NonSyncFeatures<'a> + 'a>,
+                              STORAGE = BoxedStorage> =
+    Supercow<'a, OWNED, BORROWED, SHARED, STORAGE, ()>;
+
+#[cfg(nonsync)]
+pub type ScopedSupercow<'a, OWNED, BORROWED = OWNED, SHARED = Box<dyn NonSyncFeatures<'a> + 'a>> =
+    Supercow<'a, OWNED, BORROWED, SHARED, BoxedStorage>;
+