Auto generating Python bindings (#70)

Auto generating python bindings

python/scripts/parse.py

@@ -1,4 +1,9 @@
 import re
+import subprocess
+from subprocess import PIPE
+import os
+
+
 def remove_comments(text):
     def replacer(match):
         s = match.group(0)
@@ -10,4 +15,42 @@ def remove_comments(text):
         r'//.*?$|/\*.*?\*/|\'(?:\\.|[^\\\'])*\'|"(?:\\.|[^\\"])*"',
         re.DOTALL | re.MULTILINE
     )
-    return re.sub(pattern, replacer, text)
+    return re.sub(pattern, replacer, text)
+
+
+
+
+#based on ccsyspath: https://github.com/AndrewWalker/ccsyspath
+
+def compiler_preprocessor_verbose(compiler, extraflags):
+    """Capture the compiler preprocessor stage in verbose mode
+    """
+    lines = []
+    with open(os.devnull, 'r', encoding='utf-8') as devnull:
+        cmd = [compiler, '-E'] 
+        cmd += extraflags
+        cmd += ['-', '-v']
+        p = subprocess.Popen(cmd, stdin=devnull, stdout=PIPE, stderr=PIPE)
+        p.wait()
+        lines = p.stderr.read()
+        lines = lines.splitlines()
+    return lines
+    
+def system_include_paths(compiler, cpp=True):
+    extraflags = []
+    if cpp:
+        extraflags = b'-x c++'.split()
+    lines = compiler_preprocessor_verbose(compiler, extraflags)
+    lines = [ line.strip() for line in lines ]
+
+    start = lines.index(b'#include <...> search starts here:')
+    end   = lines.index(b'End of search list.')
+
+    lines = lines[start+1:end]
+    paths = []
+    for line in lines:
+        line = line.replace(b'(framework directory)', b'')
+        line = line.strip()
+        paths.append(line)
+    paths = [p.decode('utf-8') for p in paths]
+    return paths