From c3a5fcfa262bf91e9677630b7fa156c813375939 Mon Sep 17 00:00:00 2001
From: heck <heck@pep.foundation>
Date: Sat, 5 Dec 2020 22:14:53 +0100
Subject: [PATCH] first draft - engine header file parser. (create data
 structure to represent engine functions, structs and enums - to generate DSL
 when we have a definition)

---
 gen/extract.py | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100755 gen/extract.py

diff --git a/gen/extract.py b/gen/extract.py
new file mode 100755
index 0000000..c01c504
--- /dev/null
+++ b/gen/extract.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import re
+import os
+import pprint
+
+def create_paths_list(dirname, filenames):
+    paths = []
+    for basename in filenames:
+        path = dirname + basename
+        paths.append(path)
+    return paths
+
+
+def read_files(paths):
+    content = []
+    for path in paths:
+        file_info = read_file(path)
+        content.append(file_info)
+    return content
+
+
+def read_file(path):
+    with open(path) as f:
+        file_content = f.read()
+        item = {"path": path,
+                "content": file_content}
+    return item
+
+
+def extract_functions(file_content):
+    pattr = re.compile("DYNAMIC_API.*?\);", re.DOTALL)
+    res = pattr.findall(file_content)
+    return res
+
+
+def main():
+    # Input
+    prefix = r"/Users/heck/local-default/"
+    filenames = ["pEpEngine.h",
+                 "keymanagement.h"]
+
+    # Output
+    out_dir = "data/"
+
+    basename = prefix + r"include/pEp/"
+
+    # Create out dir
+    if not os.path.isdir(out_dir):
+        os.makedirs(out_dir)
+
+    # Parse input
+    paths = create_paths_list(basename, filenames)
+    headers = read_files(paths)
+
+    # Process and create data structure
+    for header in headers:
+        print("processing path: " + header.get("path") + "...")
+        basename = os.path.basename(header.get("path"))
+
+        # add outpath
+        outpath = out_dir + basename
+        header["outpath"] = outpath
+
+        # add functions
+        functions = extract_functions(header.get("content"))
+        header["functions"] = functions
+
+
+    # Output
+    for header in headers:
+        with open(header.get("outpath"), "w+") as f:
+            pprint.pp(header)
+
+if __name__ == "__main__":
+    main()