chore: import upstream snapshot with attribution

tools/coverage/coverage_diff.py

@@ -0,0 +1,124 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""
+usage: coverage_diff.py info_file diff_file > > coverage-diff.info
+"""
+
+import sys
+
+
+def get_diff_file_lines(diff_file):
+    """
+    Args:
+        diff_file (str): File to get modified lines.
+
+    Returns:
+        dict: The diff lines of files.
+    """
+    diff_file_lines = {}
+
+    current_file = None
+    current_line = -1
+
+    with open(diff_file) as diff_file:
+        for line in diff_file:
+            line = line.strip()
+
+            if line.startswith('+++ '):
+                current_file = line.removeprefix('+++ ')
+
+                diff_file_lines[current_file] = []
+
+                continue
+
+            elif line.startswith('@@ '):
+                current_line = line.split()[2]
+                current_line = current_line.lstrip('+').split(',')[0]
+                current_line = int(current_line)
+
+                continue
+
+            elif line.startswith('-'):
+                continue
+
+            elif line.startswith('+'):
+                diff_file_lines[current_file].append(current_line)
+
+            current_line += 1
+
+    return diff_file_lines
+
+
+def get_info_file_lines(info_file, diff_file):
+    """
+    Args:
+        info_file (str): File generated by lcov.
+        diff_file (str): File to get modified lines.
+
+    Returns:
+        None
+    """
+    diff_file_lines = get_diff_file_lines(diff_file)
+
+    current_lines = []
+    current_lf = 0
+    current_lh = 0
+
+    with open(info_file) as info_file:
+        for line in info_file:
+            line = line.strip()
+
+            if line.startswith('SF:'):
+                current_file = line.lstrip('SF:')
+
+                current_file = current_file.removeprefix('/paddle/')
+
+                current_lines = diff_file_lines.get(current_file, [])
+
+            elif line.startswith('DA:'):
+                da = line.lstrip('DA:').split(',')
+
+                if int(da[0]) in current_lines:
+                    current_lf += 1
+
+                    if not line.endswith(',0'):
+                        current_lh += 1
+
+                    print(line)
+
+                continue
+
+            elif line.startswith('LF:'):
+                print(f'LF:{current_lf}')
+
+                continue
+
+            elif line.startswith('LH:'):
+                print(f'LH:{current_lh}')
+
+                continue
+
+            print(line)
+
+
+if __name__ == '__main__':
+    if len(sys.argv) < 3:
+        sys.exit()
+
+    info_file = sys.argv[1]
+    diff_file = sys.argv[2]
+
+    get_info_file_lines(info_file, diff_file)