Rust: extract sources of crates

rust/tools/BUILD.bazel

@@ -2,7 +2,7 @@ load("//misc/bazel:pkg.bzl", "codeql_pkg_files")
 
 codeql_pkg_files(
     name = "tools",
-    srcs = glob(["*.cmd"]),
+    srcs = glob(["*.cmd", "autobuild.py"]),
     exes = glob(["*.sh"]),
     visibility = ["//rust:__pkg__"],
 )

rust/tools/autobuild.py

@@ -0,0 +1,27 @@
+
+import os
+import json
+import subprocess
+
+""" 
+run "cargo metadata --format-version=1" 
+"""
+
+
+def get_cargo_metadata():
+    metadata = json.loads(subprocess.check_output(
+        ["cargo", "metadata", "--format-version=1"]))
+    return metadata
+
+
+CODEQL_EXTRACTOR_RUST_ROOT = os.environ.get("CODEQL_EXTRACTOR_RUST_ROOT")
+CODEQL_PLATFORM = os.environ.get("CODEQL_PLATFORM")
+metadata = get_cargo_metadata()
+for package in metadata['packages']:
+    for target in package['targets']:
+        if 'lib' in target['kind']:
+            src_path = target['src_path']
+            dir = os.path.dirname(src_path)
+            autobuild = "{root}/tools/{platform}/autobuild".format(
+                root=CODEQL_EXTRACTOR_RUST_ROOT, platform=CODEQL_PLATFORM)
+            subprocess.run([autobuild], cwd=dir)

rust/tools/autobuild.sh

@@ -3,4 +3,6 @@
 set -eu
 
 export RUST_BACKTRACE=1
-exec "$CODEQL_EXTRACTOR_RUST_ROOT/tools/$CODEQL_PLATFORM/autobuild"
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+
+exec /usr/bin/env python "${SCRIPT_DIR}/autobuild.py"