[Buildroot] [next, v2 1/2] utils/get-developers: bail out on parsing errors

[Ricardo Martincoski <ricardo.martincoski@gmail.com>]

Currently 4 types of parsing errors/warnings can be found:
- entry for a file that is not in the tree anymore (warning)
- developer entry with no file entry (error)
- file entry with no developer (error)
- entry that is not a developer, a file or a comment (hard error)

Currently only the last one ends the script with -v with error code.

Make all 3 error types into hard errors and bail out at the first error
found, because the rest of the state machine is not designed to handle
malformed input.
Suggested-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
---
Changes v1 -> v2:
  - do not change warning to error, an entry for a file that is not in
    the tree anymore is not a syntax error (Thomas)
  - add the lineno on the warning messages in the next patch instead of
    this patch

check-*:
https://gitlab.com/RicardoMartincoski/buildroot/-/pipelines/706249815

tests.utils.test_get_developers.TestGetDevelopers:
https://gitlab.com/RicardoMartincoski/buildroot/-/pipelines/706249847
---
 support/testing/tests/utils/test_get_developers.py | 9 ++++-----
 utils/getdeveloperlib.py                           | 1 +
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/support/testing/tests/utils/test_get_developers.py b/support/testing/tests/utils/test_get_developers.py
index 12710fe8d3..0b313c7c59 100644
--- a/support/testing/tests/utils/test_get_developers.py
+++ b/support/testing/tests/utils/test_get_developers.py
@@ -70,11 +70,11 @@ class TestGetDevelopers(unittest.TestCase):
                      b'F:\tutils/get-developers\n'
         out, err, rc = call_get_developers("get-developers", ["-v"], self.WITH_UTILS_IN_PATH, topdir, developers)
         self.assertIn("Syntax error in DEVELOPERS file, line 1", err)
-        self.assertEqual(rc, 0)
+        self.assertEqual(rc, 1)
         self.assertEqual(len(out), 0)
         self.assertEqual(len(err), 1)
 
-        # -v generating error for developer entry with no file entries
+        # -v generating error for developer entry with no file entries, stopping on first error
         developers = b'# comment\n' \
                      b'# comment\n' \
                      b'\n' \
@@ -84,10 +84,9 @@ class TestGetDevelopers(unittest.TestCase):
                      b'F:\tutils/get-developers\n'
         out, err, rc = call_get_developers("get-developers", ["-v"], self.WITH_UTILS_IN_PATH, topdir, developers)
         self.assertIn("Syntax error in DEVELOPERS file, line 1", err)
-        self.assertIn("Syntax error in DEVELOPERS file, line 2", err)
-        self.assertEqual(rc, 0)
+        self.assertEqual(rc, 1)
         self.assertEqual(len(out), 0)
-        self.assertEqual(len(err), 2)
+        self.assertEqual(len(err), 1)
 
         # -v not generating error for developer entry with empty list of file entries
         developers = b'# comment\n' \
diff --git a/utils/getdeveloperlib.py b/utils/getdeveloperlib.py
index 2a8d5c213c..dbd21af443 100644
--- a/utils/getdeveloperlib.py
+++ b/utils/getdeveloperlib.py
@@ -243,6 +243,7 @@ def parse_developers(filename=None):
                 if name is not None or len(files) != 0:
                     print("Syntax error in DEVELOPERS file, line %d" % linen,
                           file=sys.stderr)
+                    return None
                 name = line[2:].strip()
             elif line.startswith("F:"):
                 fname = line[2:].strip()
-- 
2.34.1

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