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[PATCH 20/22] Add checkers/splint.py


This patch adds a harness for invoking splint:
  http://splint.org/
returning the results in JSON format.

It runs "splint -csv TEMPFILE +csvoverwrite -strict", then uses
  firehose.parsers.splint.parse_splint_csv
and
  firehose.parsers.splint.parse_splint_stderr
to parse the csv and the stderr, turning them into firehose JSON
(stderr is used to get at version information).

checkers/ChangeLog:
	* splint.py: New file.
---
 checkers/splint.py | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100755 checkers/splint.py

diff --git a/checkers/splint.py b/checkers/splint.py
new file mode 100755
index 0000000..e8f79f2
--- /dev/null
+++ b/checkers/splint.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python
+#   Copyright 2017 David Malcolm <dmalcolm@redhat.com>
+#   Copyright 2017 Red Hat, Inc.
+#
+#   This is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see
+#   <http://www.gnu.org/licenses/>.
+
+import sys
+import tempfile
+
+from firehose.model import File, Issue
+from firehose.parsers.splint import parse_splint_csv, parse_splint_stderr
+
+from checker import Checker, CheckerTests, tool_main
+
+class InvokeSplint(Checker):
+    """
+    Checker subclass that invokes "splint -strict"
+    """
+    name = 'splint'
+
+    def __init__(self, ctxt):
+        Checker.__init__(self, ctxt)
+        self.tempfile = None
+
+    def __del__(self):
+        del self.tempfile
+
+    def raw_invoke(self, gccinv, sourcefile):
+        self.tempfile = tempfile.NamedTemporaryFile()
+        args = ['splint', '-csv', self.tempfile.name, '+csvoverwrite', '-strict', sourcefile]
+        # FIXME: why is overwrite needed?
+        return self._run_subprocess(sourcefile, args)
+
+    def handle_output(self, result):
+        analysis = parse_splint_csv(self.tempfile.name)
+        analysis.metadata.file_ = File(result.sourcefile, None)
+        analysis.metadata.version = parse_splint_stderr(result.err)
+        self.set_custom_fields(result, analysis)
+        return analysis
+
+    def set_custom_fields(self, result, analysis):
+        analysis.set_custom_field('splint-invocation',
+                                  ' '.join(result.argv))
+        result.set_custom_fields(analysis)
+
+class SplintTests(CheckerTests):
+    def make_tool(self):
+        return self.make_tool_from_class(InvokeSplint)
+
+    def verify_basic_metadata(self, analysis, sourcefile):
+        # Verify basic metadata:
+        self.assert_metadata(analysis, 'splint', sourcefile)
+        self.assert_has_custom_field(analysis, 'splint-invocation')
+        self.assert_has_custom_field(analysis, 'stdout')
+        self.assert_has_custom_field(analysis, 'stderr')
+
+    def test_unconditional_leak(self):
+        analysis = self.invoke('test-sources/unconditional-file-leak.c')
+        self.assertEqual(len(analysis.results), 8)
+        r0 = analysis.results[0]
+        self.assertIsInstance(r0, Issue)
+        self.assertEqual(r0.testid, 'internalglobs')
+
+if __name__ == '__main__':
+    sys.exit(tool_main(sys.argv, InvokeSplint))
-- 
1.8.5.3


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