From f0de38ad728d4ee0b8244e3438e74b8306b7a74c Mon Sep 17 00:00:00 2001
From: Zbigniew Jędrzejewski-Szmek <zbyszek@fedoraproject.org>
Date: Sep 30 2021 08:36:41 +0000
Subject: Merge #147 `Fix bug introduced by recent patches and clean up the code a bit`


---

diff --git a/rust2rpm/__main__.py b/rust2rpm/__main__.py
index b2d82a2..aa8846f 100644
--- a/rust2rpm/__main__.py
+++ b/rust2rpm/__main__.py
@@ -3,6 +3,7 @@ import configparser
 import contextlib
 from datetime import datetime, timezone
 import difflib
+import functools
 import itertools
 import os
 import pathlib
@@ -44,6 +45,12 @@ LICENSES = re.compile(
          r"GNU-.*[0-9].*|GPL-.*[0-9].*|LGPL-.*[0-9].*|MIT-.*[0-9].*|"
          r"MPL-.*[0-9].*|OFL-.*[0-9].*)")
 
+def sortify(func):
+    """Return a sorted list from a generator"""
+    def wrapper(*args, **kwargs):
+        return sorted(func(*args, **kwargs))
+    return functools.update_wrapper(wrapper, func)
+
 def get_default_target():
     try:
         os_release_file = open('/etc/os-release')
@@ -125,6 +132,9 @@ def local_toml(toml, version):
         doc_files = get_doc_files(toml)
         license_files = get_license_files(toml)
         toml = os.path.join(toml, "Cargo.toml")
+    else:
+        doc_files = []
+        license_files = []
 
     return toml, None, version, doc_files, license_files
 
@@ -205,18 +215,18 @@ def make_patch(toml, enabled=True, tmpfile=False):
 def _is_path(path):
     return "/" in path or path in {".", ".."}
 
+@sortify
 def get_license_files(path):
-    license_files = []
     exclude = { "vendor", "example", "examples", "_example", "_examples",
-                   "testdata", "_testdata", ".github", "tests", "test"}
+                "testdata", "_testdata", ".github", "tests", "test" }
     for root, dirs, files in os.walk(path, topdown=True):
         dirs[:] = [d for d in dirs if d not in exclude]
-        license_files.extend([os.path.relpath(os.path.join(root, f), path) for f in files if LICENSES.match(f)])
-    license_files.sort()
-    return license_files
+        for f in files:
+            if LICENSES.match(f):
+                yield os.path.relpath(os.path.join(root, f), path)
 
+@sortify
 def get_doc_files(path):
-    doc_files = []
     matcher = re.compile(
         r"(.*\.md|.*\.markdown|.*\.mdown|.*\.mkdn|.*\.rst|.*\.txt|AUTHORS|"
         r"AUTHORS[\.\-].*|CONTRIBUTORS|CONTRIBUTORS[\.\-].*|README|"
@@ -225,9 +235,9 @@ def get_doc_files(path):
     matcherex = re.compile(r"CMakeLists\.txt")
     for root, dirs, files in os.walk(path, topdown=True):
         dirs[:] = []
-        doc_files.extend([os.path.relpath(os.path.join(root, f), path) for f in files if matcher.match(f) and not LICENSES.match(f) and not matcherex.match(f)])
-    doc_files.sort()
-    return doc_files
+        for f in files:
+            if matcher.match(f) and not LICENSES.match(f) and not matcherex.match(f):
+                yield os.path.relpath(os.path.join(root, f), path)
 
 def make_diff_metadata(crate, version, patch=False, store=False):
     if _is_path(crate):
@@ -245,10 +255,9 @@ def make_diff_metadata(crate, version, patch=False, store=False):
     else:
         cratef, crate, version = download(crate, version)
 
-    with files_from_crate(cratef, crate, version) as files:
-        diff = make_patch(files[0], enabled=patch)
-        metadata = Metadata.from_file(files[0])
-        doc_files, license_files = files[1:3]
+    with files_from_crate(cratef, crate, version) as (toml, doc_files, license_files):
+        diff = make_patch(toml, enabled=patch)
+        metadata = Metadata.from_file(toml)
     if store:
         shutil.copy2(cratef, os.path.join(os.getcwd(), f"{metadata.name}-{version}.crate"))
     return crate, diff, metadata, doc_files, license_files