Playing with Rust and Python

README.md

@@ -1,3 +1,10 @@
+# About the "rust" branch
+
+I'm really excited about Rust and I'm trying out a Rust implementation of dupeGuru's bottlenecks
+(PE's image comparison).
+
+For fun.
+
 # dupeGuru
 
 [dupeGuru][dupeguru] is a cross-platform (Linux, OS X, Windows) GUI tool to find duplicate files in

core_pe/rustmodule/Cargo.lock

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+[root]
+name = "block"
+version = "0.0.1"
+dependencies = [
+ "image 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "byteorder"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "enum_primitive"
+version = "0.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "num 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "image"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "byteorder 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "enum_primitive 0.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "libc"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "log"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "num"
+version = "0.1.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-serialize 0.3.12 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rustc-serialize"
+version = "0.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+

core_pe/rustmodule/Cargo.toml

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+[package]
+name = "block"
+version = "0.0.1"
+authors = ["Virgil Dupras <hsoft@hardcoded.net>"]
+
+[lib]
+name = "block"
+crate-type = ["dylib"]
+
+[dependencies]
+image = "*"
+

core_pe/rustmodule/foo.py

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+import ctypes
+
+p = 'target/release/libblock-b7b66d53f276d597.so'
+imgp = b'/home/hsoft/src/dupeguru/images/dgme_logo_128.png'
+block = ctypes.CDLL(p)
+s = ctypes.create_string_buffer(imgp)
+print(repr(block.block(imgp)))
+

core_pe/rustmodule/src/block.rs

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+#![feature(libc)]
+extern crate libc;
+extern crate image;
+use libc::c_char;
+use std::ffi::CStr;
+use std::str;
+use std::path::Path;
+use image::GenericImage;
+
+#[no_mangle]
+pub extern "C" fn block(value: *const c_char) -> u32 {
+    let slice = unsafe { CStr::from_ptr(value) };
+    let path = &Path::new(str::from_utf8(slice.to_bytes()).unwrap());
+    let image = image::open(path).unwrap().to_rgb();
+    let mut totr: u32 = 0;
+    let mut totg: u32 = 0;
+    let mut totb: u32 = 0;
+    for pixel in image.pixels() {
+        let data = pixel.data;
+        totr += data[0] as u32;
+        totg += data[1] as u32;
+        totb += data[2] as u32;
+    }
+    println!("foo! {} {} {}", totr, totg, totb);
+    42
+}
+