Do not fail with --replace-originals

These archive should not crash extraction when using --replace-originals

Reported-by: Smascer @Smascer
Reported-by: Bryan Sutula @sutula
Reference: #31
Reference: aboutcode-org/scancode-toolkit#2723
Signed-off-by: Philippe Ombredanne <pombredanne@nexb.com>

Author: pombredanne

src/extractcode/extract.py

@@ -126,9 +126,17 @@ def extract(
     processed_events_append = processed_events.append
     for event in extract_events:
         yield event
+        if event.warnings or event.errors:
+            if TRACE:
+                logger.debug(
+                    f'extract:replace_originals: {event} has errors. '
+                    'not replacing originals'
+                )
+            continue
         if replace_originals:
             processed_events_append(event)
 
+
     # move files around when done
     if replace_originals:
         for xevent in reversed(processed_events):

tests/data/cli/replace-originals/issue6550.gz

@@ -0,0 +1 @@
+download_url: https://golang.org/src/compress/gzip/testdata/issue6550.gz.base64

tests/data/cli/replace-originals/issue6550.gz.ABOUT

@@ -0,0 +1 @@
+download_url: https://github.com/ruby/rake/blob/v0.9.2.2/doc/rake.1.gz?raw=true

tests/data/cli/replace-originals/rake.1.gz

@@ -274,19 +274,21 @@ def test_extract_tree_recursive_replace_originals(self):
         check_files(test_dir, expected)
 
     def test_extract_with_replace_originals_does_not_fail_with_gz_with_trailing(self):
-        expected = (
-        )
+        expected = ('rake.1.gz',)
         test_dir = self.get_test_loc('extract/replace-originals/rake.1.gz', copy=True)
         result = list(extract.extract(test_dir, recurse=True, replace_originals=True))
-        check_no_error(result)
+        r = result[-1]
+        assert r.errors and all(e.startswith('Not a gzipped file') for e in r.errors)
+        assert not r.warnings
         check_files(test_dir, expected)
 
     def test_extract_with_replace_originals_does_not_fail_with_corrupted_archive(self):
-        expected = (
-        )
+        expected = ('issue6550.gz',)
         test_dir = self.get_test_loc('extract/replace-originals/issue6550.gz', copy=True)
         result = list(extract.extract(test_dir, recurse=True, replace_originals=True))
-        check_no_error(result)
+        r = result[-1]
+        assert r.errors and all(e.startswith('Error') for e in r.errors)
+        assert not r.warnings
         check_files(test_dir, expected)
 
     def test_extract_tree_shallow_then_recursive(self):

tests/data/cli/replace-originals/rake.1.gz.ABOUT

@@ -261,6 +261,22 @@ def test_extractcode_command_can_ignore():
     assert sorted(expected) == sorted(file_result)
 
 
+def test_extractcode_command_does_not_crash_with_replace_originals_and_corrupted_archives():
+    test_dir = test_env.get_test_loc('cli/replace-originals', copy=True)
+    result = run_extract(['--replace-originals', '--verbose', test_dir] , expected_rc=1)
+
+    assert not os.path.exists(os.path.join(test_dir, 'rake.1.gz-extract'))
+    assert 'rake.1.gz' in result.stdout
+
+    assert 'Extracting archives...' in result.stderr
+    assert 'ERROR extracting' in result.stderr
+    assert 'rake.1.gz' in result.stderr
+    assert 'Not a gzipped file ' in result.stderr
+    assert 'issue6550.gz' in result.stderr
+    assert ' too many length or distance symbols' in result.stderr
+    assert 'Extracting done.' in result.stderr
+
+
 @pytest.mark.skipif(on_windows, reason='FIXME: this test fails on Windows until we have support for long file names.')
 def test_extractcode_command_can_extract_nuget():
     test_dir = test_env.get_test_loc('cli/extract_nuget', copy=True)