Restructure, add API, add compression

1 files changed, 65 insertions, 0 deletions

diff --git a/lib/src/lib.rs b/lib/src/lib.rs
new file mode 100644
index 0000000..666c727
--- /dev/null
+++ b/lib/src/lib.rs
@@ -0,0 +1,65 @@
+extern crate phf;
+extern crate flate2;
+
+use std::borrow::{Borrow, Cow};
+use std::io::{self, Cursor, Error, ErrorKind, Read};
+
+use flate2::FlateReadExt;
+
+pub enum Compression {
+    None,
+    Gzip,
+}
+
+/// Runtime access to the included files
+pub struct Files {
+    /// **Do not access this field, it is only public to allow for code generation!**
+    pub files: phf::Map<&'static str, (Compression, &'static [u8])>,
+}
+
+#[cfg(windows)]
+fn as_key(path: &str) -> Cow<str> {
+    Cow::Owned(path.replace("\\", "/"))
+}
+
+#[cfg(not(windows))]
+fn as_key(path: &str) -> Cow<str> {
+    Cow::Borrowed(path)
+}
+
+impl Files {
+    pub fn available(&self, path: &str) -> bool {
+        self.files.contains_key(path)
+    }
+
+    pub fn get(&self, path: &str) -> io::Result<Cow<'static, [u8]>> {
+        let key = as_key(path);
+        match self.files.get(key.borrow() as &str) {
+            Some(b) => {
+                match b.0 {
+                    Compression::None => Ok(Cow::Borrowed(b.1)),
+                    Compression::Gzip => {
+                        let mut r = try!(Cursor::new(b.1).gz_decode());
+                        let mut v = Vec::new();
+                        try!(r.read_to_end(&mut v));
+                        Ok(Cow::Owned(v))
+                    }
+                }
+            }
+            None => Err(Error::new(ErrorKind::NotFound, "Key not found")),
+        }
+    }
+
+    pub fn read(&self, path: &str) -> io::Result<Box<Read>> {
+        let key = as_key(path);
+        match self.files.get(key.borrow() as &str) {
+            Some(b) => {
+                match b.0 {
+                    Compression::None => Ok(Box::new(Cursor::new(b.1))),
+                    Compression::Gzip => Ok(Box::new(try!(Cursor::new(b.1).gz_decode()))),
+                }
+            }
+            None => Err(Error::new(ErrorKind::NotFound, "Key not found")),
+        }
+    }
+}