Save original documentation url

Documentation URL is required for #74

Author: onur

src/db/add_package.rs

@@ -52,11 +52,12 @@ pub fn add_package_into_database(conn: &Connection,
                                             rustdoc_status, test_status, license, repository_url, \
                                             homepage_url, description, description_long, readme, \
                                             authors, keywords, have_examples, downloads, files, \
-                                            doc_targets, is_library, doc_rustc_version \
+                                            doc_targets, is_library, doc_rustc_version, \
+                                            documentation_url \
                                         ) \
                                         VALUES ( $1,  $2,  $3,  $4, $5, $6,  $7, $8, $9, $10, \
                                                  $11, $12, $13, $14, $15, $16, $17, $18, $19, \
-                                                 $20, $21, $22, $23 \
+                                                 $20, $21, $22, $23, $24 \
                                         ) \
                                         RETURNING id",
                                        &[&crate_id,
@@ -81,7 +82,8 @@ pub fn add_package_into_database(conn: &Connection,
                                          &files,
                                          &doc_targets.to_json(),
                                          &is_library,
-                                         &res.rustc_version]));
+                                         &res.rustc_version,
+                                         &pkg.manifest().metadata().documentation]));
             // return id
             rows.get(0).get(0)
 
@@ -92,7 +94,7 @@ pub fn add_package_into_database(conn: &Connection,
                              homepage_url = $12, description = $13, description_long = $14, \
                              readme = $15, authors = $16, keywords = $17, have_examples = $18, \
                              downloads = $19, files = $20, doc_targets = $21, is_library = $22, \
-                             doc_rustc_version = $23 \
+                             doc_rustc_version = $23, documentation_url = $24 \
                              WHERE crate_id = $1 AND version = $2",
                             &[&crate_id,
                               &format!("{}", pkg.manifest().version()),
@@ -116,7 +118,8 @@ pub fn add_package_into_database(conn: &Connection,
                               &files,
                               &doc_targets.to_json(),
                               &is_library,
-                              &res.rustc_version]));
+                              &res.rustc_version,
+                              &pkg.manifest().metadata().documentation]));
             rows.get(0).get(0)
         }
     };

src/db/mod.rs

@@ -101,6 +101,7 @@ pub fn create_tables(conn: &Connection) -> Result<(), Error> {
             license VARCHAR(100), \
             repository_url VARCHAR(255), \
             homepage_url VARCHAR(255), \
+            documentation_url VARCHAR(255), \
             description VARCHAR(1024), \
             description_long VARCHAR(51200), \
             readme VARCHAR(51200), \