iterate

src/data.rs

@@ -38,4 +38,49 @@ pub fn distance(p1: impl IntoUsize, p2: impl IntoUsize) -> usize {
         Ordering::Greater => p1 - p2,
         Ordering::Equal => 0,
     }
-}
+}
+
+mod pointer_iterator {
+
+    pub trait Pointer {
+        type IterType;
+        fn into_iter(self) -> Self::IterType;
+    }
+
+    pub struct PIter<T>(*const T);
+    pub struct PIterMut<T>(*mut T);
+
+    impl<T: 'static> Iterator for PIter<T> {
+        type Item = &'static T;
+        fn next(&mut self) -> Option<Self::Item> {
+            unsafe {
+                let r = Some(&*self.0);
+                self.0 = self.0.offset(1isize);
+                r
+            }
+        }
+    }
+
+    impl<T: 'static> Iterator for PIterMut<T> {
+        type Item = &'static mut T;
+        fn next(&mut self) -> Option<Self::Item> {
+            unsafe {
+                let r = Some(&mut *self.0);
+                self.0 = self.0.offset(1isize);
+                r
+            }
+        }
+    }
+    impl<T> Pointer for *const T { 
+        type IterType = PIter<T>;
+        fn into_iter(self) -> Self::IterType { PIter(self) }
+    }
+    impl<T> Pointer for *mut T { 
+        type IterType = PIterMut<T>;
+        fn into_iter(self) -> Self::IterType { PIterMut(self) }
+    }
+}
+
+pub fn iterate<T: pointer_iterator::Pointer>(pointer: T) -> T::IterType {
+    pointer.into_iter()
+}

src/lib.rs

@@ -30,7 +30,7 @@ pub use cffi::*;
 pub mod win32;
 
 #[cfg(feature = "win32")]
-pub use win32::{ image_base, image_header, find_kernel32 };
+pub use win32::{ image_base, image_header, find_kernel32, process_executable };
 
 
 /// re-export the signature macro

tests/test_data.rs

@@ -1,13 +1,27 @@
-
 #[test]
 pub fn test_distance() {
+    let _ = x::dur![ 5 days 4 hours 7 minutes 2 seconds 2 minutes ];
 
-    let a = x::dur![ 5 days 4 hours 7 minutes 2 seconds 2 minutes ];
-
-    let a = [0u8,2,3];
+    let a = [0u8, 2, 3];
     let p1 = &a[0];
     let p2 = &a[2];
     assert_eq!(x::distance(p1, p2), 2);
     assert_eq!(x::distance(p2, p1), 2);
     assert_eq!(x::distance(p1, p1), 0);
+
+
+    let a = b"Hello World\0".as_ptr();
+    assert_eq!(Some(11), x::iterate(a).position(|&a| a == 0));
+
+    let b = b"H\0e\0l\0l\0o\0 \0W\0o\0r\0l\0d\0\0\0".as_ptr() as *const u16;
+    let bytes: Vec<u16> = x::iterate(b)
+        .take_while(|&&c| c != 0)
+        .cloned().collect();
+    assert_eq!("Hello World", String::from_utf16_lossy(bytes.as_slice()));
+
+
+    let hello_world: String = char::decode_utf16(
+        x::iterate(b).cloned().take_while(|&c| c != 0))
+        .filter_map(|_r| _r.ok()).collect();
+    assert_eq!("Hello World", hello_world);
 }