[Repo] Add gitignore generator for ya.make

Author: jkuradobery

generate_gitignore.py

@@ -0,0 +1,41 @@
+import subprocess
+from pathlib import Path
+
+
+for path in subprocess.check_output(
+    ["grep", "-r", "--include", "ya.make", "PROGRAM"]
+    ).decode().splitlines():
+    [ya_make_path, contents] = path.split(":")
+    if not ya_make_path.endswith("ya.make"):
+        continue
+    if "contrib" in ya_make_path:
+        continue
+    if ya_make_path.startswith("build"):
+        continue
+    if ya_make_path.startswith("library"):
+        continue
+    if ya_make_path.startswith("vendor"):
+        continue
+    if ya_make_path.startswith("tools"):
+        continue
+    if ya_make_path.startswith("yt"):
+        continue
+    dir_path = ya_make_path.replace("/ya.make", "")
+    directory = dir_path.split("/")[-1]
+    name = ""
+    if "PROGRAM" in contents:
+        if "PROGRAM(" not in contents:
+            continue
+        name = contents.split("PROGRAM(")[1].split(")")[0]
+        if name == "":
+            name = directory
+    if name == "":
+        continue
+    dir_path = Path(dir_path)
+    gitignore = dir_path / ".gitignore"
+    gitignore_text = name
+    if (gitignore).exists():
+        if name in gitignore.read_text():
+            continue
+        gitignore_text = gitignore.read_text() + "\n" + name
+    gitignore.write_text(gitignore_text)