list packages (after manual make)

.gitignore

@@ -3,3 +3,5 @@
 Cargo.lock
 .idea
 *.iml
+apt-c/lib.o
+apt-c/libapt-c.a

Cargo.toml

@@ -4,6 +4,4 @@ version = "0.1.0"
 authors = ["Chris West (Faux) <git@goeswhere.com>"]
 
 [dependencies]
-
+libc = "0.2.26"
-[build-dependencies]
-bindgen = "0.26.3"

apt-c/Makefile

@@ -0,0 +1,11 @@
+CXXFLAGS=-Wall -Wextra
+
+all: libapt-c.a
+
+lib.o: lib.cpp lib.h
+
+libapt-c.a: lib.o
+	ar rcs $@ $<
+
+clean:
+	$(RM) libapt-c.a lib.o

apt-c/lib.cpp

@@ -0,0 +1,43 @@
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/cachefile.h>
+
+struct PCache {
+    pkgCacheFile *cache_file;
+    pkgCache *cache;
+};
+
+extern "C" {
+    PCache *get_pkg_cache();
+    void free_pkg_cache(PCache *cache);
+
+    int iterate_all_packages(PCache *cache, int (*visit)(const char*));
+}
+
+PCache *get_pkg_cache() {
+    pkgInitConfig(*_config);
+    pkgInitSystem(*_config, _system);
+
+    pkgCacheFile *cache_file = new pkgCacheFile();
+    pkgCache *cache = cache_file->GetPkgCache();
+
+    PCache *ret = new PCache();
+    ret->cache_file = cache_file;
+    ret->cache = cache;
+
+    return ret;
+}
+
+void free_pkg_cache(PCache *cache) {
+    delete cache->cache_file;
+    delete cache;
+}
+
+int iterate_all_packages(PCache *cache, int (*visit)(const char*)) {
+    for (pkgCache::PkgIterator iter = cache->cache->PkgBegin(); iter != cache->cache->PkgEnd(); ++iter) {
+        if (!visit(iter.Name())) {
+            return false;
+        }
+    }
+
+    return true;
+}

build.rs

@@ -1,20 +1,3 @@
-extern crate bindgen;
-
-use std::env;
-use std::path::PathBuf;
-
 fn main() {
-    // command to cargo:
+    println!("cargo:rustc-link-search=apt-c")
-    println!("cargo:rustc-link-lib=apt-pkg");
-
-    let bindings = bindgen::Builder::default()
-        .header("wrapper.hpp")
-        .whitelisted_type("URI")
-        .generate()
-        .expect("Unable to generate bindings");
-
-    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
-    bindings
-        .write_to_file(out_path.join("bindings.rs"))
-        .expect("Couldn't write bindings!");
 }

src/lib.rs

@@ -1,10 +1,26 @@
-mod raw;
+extern crate libc;
+
+pub mod raw;
 
 #[cfg(test)]
 mod tests {
     use super::*;
 
+    use std::ffi::CStr;
+
+    extern fn print_arg(arg: *const libc::c_char) -> libc::c_int {
+        unsafe {
+            println!("{:?}", CStr::from_ptr(arg).to_str());
+            return 1;
+        }
+    }
+
     #[test]
     fn it_works() {
+        unsafe {
+            let cache = raw::get_pkg_cache();
+            println!("{:?}", raw::iterate_all_packages(cache, print_arg));
+            raw::free_pkg_cache(cache);
+        }
     }
 }

src/raw.rs

@@ -1,5 +1,16 @@
-#![allow(non_upper_case_globals)]
+use libc::c_void;
-#![allow(non_camel_case_types)]
+use libc::c_char;
-#![allow(non_snake_case)]
+use libc::c_int;
 
-include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
+#[link(name = "apt-c")]
+#[link(name = "apt-pkg")]
+#[link(name = "stdc++")]
+extern {
+    pub fn get_pkg_cache() -> *mut c_void;
+    pub fn free_pkg_cache(cache: *mut c_void);
+
+    pub fn iterate_all_packages(
+        cache: *mut c_void,
+        visit: extern fn(name: *const c_char) -> c_int,
+    ) -> c_int;
+}

wrapper.hpp

@@ -1,4 +0,0 @@
-#define APT_8_CLEANER_HEADERS
-#define APT_9_CLEANER_HEADERS
-#define APT_10_CLEANER_HEADERS
-#include <apt-pkg/strutl.h>