Try to read package.metadata from Cargo.toml.orig first

Author: onur

src/db/add_package.rs

@@ -39,7 +39,7 @@ pub fn add_package_into_database(conn: &Connection,
         &TargetKind::Lib(_) => true,
         _ => false,
     };
-    let metadata = Metadata::from_package(pkg);
+    let metadata = Metadata::from_package(pkg)?;
 
     let release_id: i32 = {
         let rows = try!(conn.query("SELECT id FROM releases WHERE crate_id = $1 AND version = $2",

src/docbuilder/metadata.rs

@@ -2,6 +2,7 @@
 use std::path::Path;
 use cargo::core::Package;
 use toml::Value;
+use error::Result;
 
 
 /// Metadata for custom builds
@@ -55,8 +56,15 @@ pub struct Metadata {
 
 
 impl Metadata {
-    pub fn from_package(pkg: &Package) -> Metadata {
-        Metadata::from_manifest(pkg.manifest_path())
+    pub fn from_package(pkg: &Package) -> Result<Metadata> {
+        let src_path = pkg.manifest_path().parent().ok_or("Source path not available")?;
+        for c in ["Cargo.toml.orig", "Cargo.toml"].iter() {
+            let manifest_path = src_path.clone().join(c);
+            if manifest_path.exists() {
+                return Ok(Metadata::from_manifest(manifest_path));
+            }
+        }
+        Err("Manifest not found".into())
     }
 
     pub fn from_manifest<P: AsRef<Path>>(path: P) -> Metadata {

src/utils/build_doc.rs

@@ -44,7 +44,7 @@ pub fn build_doc(name: &str, vers: Option<&str>, target: Option<&str>) -> CargoR
     let current_dir = try!(env::current_dir());
     let target_dir = PathBuf::from(current_dir).join("cratesfyi");
 
-    let metadata = Metadata::from_package(&pkg);
+    let metadata = Metadata::from_package(&pkg).map_err(|e| human(e.description()))?;
 
     let opts = ops::CompileOptions {
         config: &config,