inspector: find Cargo.toml from binary

rust2rpm/inspector.py

@@ -1,9 +1,36 @@
 import argparse
+import glob
+import os
 import sys
 
 from . import Metadata
 from .metadata import normalize_deps
 
+
+def _get_binaries(cargo_toml):
+    manifest = Metadata.manifest(cargo_toml, check=False)
+    return [
+        t['name'] for t in manifest.get('targets', []) if 'bin' in t['kind']
+    ]
+
+
+def _cargo_toml(source_path, path, exclude_vendor=True):
+    """Find a Cargo.toml related with a binary."""
+    # If path is aready a Cargo.toml file, we are done
+    if path.endswith('Cargo.toml'):
+        return os.path.join(source_path, path)
+
+    binary = os.path.basename(path)
+    cargo_tomls = glob.glob(os.path.join(source_path, '**/Cargo.toml'),
+                            recursive=True)
+    for cargo_toml in cargo_tomls:
+        if exclude_vendor and 'vendor' in cargo_toml.split(os.sep):
+            continue
+
+        if binary in _get_binaries(cargo_toml):
+            return cargo_toml
+
+
 def main():
     parser = argparse.ArgumentParser()
     group = parser.add_mutually_exclusive_group(required=True)
@@ -16,6 +43,7 @@ def main():
     group.add_argument("-R", "--requires", action="store_true", help="Print Requires")
     group.add_argument("-BR", "--build-requires", action="store_true", help="Print BuildRequires")
     group.add_argument("-TR", "--test-requires", action="store_true", help="Print TestRequires")
+    group.add_argument("-p", "--path", default=os.getcwd(), help="Path where the source project is living")
     fgroup = parser.add_mutually_exclusive_group()
     fgroup.add_argument("-a", "--all-features", action="store_true", help="Activate all features")
     fgroup.add_argument("-f", "--features", default="default", help="Feature(s) to work on (comma-separated)")
@@ -23,6 +51,7 @@ def main():
     args = parser.parse_args()
 
     files = args.file or sys.stdin.readlines()
+    files = [_cargo_toml(args.path, f) for f in files]
 
     features = set()
     for f in args.features.split(","):

rust2rpm/metadata.py

@@ -349,10 +349,15 @@ class Metadata:
             raise
 
     @staticmethod
-    def manifest(path):
-        return json.loads(
-            subprocess.check_output(["cargo", "read-manifest",
-                                     f"--manifest-path={path}"]))
+    def manifest(path, check=True):
+        manifest = {}
+        output = subprocess.run(
+            ["cargo", "read-manifest", f"--manifest-path={path}"],
+            check=check, capture_output=True
+        )
+        if not output.returncode:
+            manifest = json.loads(output.stdout)
+        return manifest
 
     @staticmethod
     def metadata(path, deps=False):