intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 37 insertions, 0 deletions

diff --git a/contrib/python/cffi/gen/main.py b/contrib/python/cffi/gen/main.py
new file mode 100644
index 00000000000..106293d3c53
--- /dev/null
+++ b/contrib/python/cffi/gen/main.py
@@ -0,0 +1,37 @@
+import os.path
+import sys
+
+from cffi.setuptools_ext import execfile
+
+usage = '''Usage: {} INPUT:VAR OUTPUT
+Generate CFFI C module source code.
+
+INPUT is a source .py file.
+VAR is a cffi.FFI() object defined in the source file.
+OUTPUT is a .c or .cpp output file.
+'''
+
+
+def main():
+    if len(sys.argv) != 3 or ':' not in sys.argv[1]:
+        sys.stdout.write(usage.format(sys.argv[0]))
+        sys.exit(1)
+
+    mod_spec, c_file = sys.argv[1:3]
+    build_file_name, ffi_var_name = mod_spec.rsplit(':', 1)
+
+    source_dir = os.path.dirname(os.path.abspath(build_file_name))
+    sys._MEIPASS = source_dir  # For pygit2.
+    sys.dont_write_bytecode = True
+    sys.path = [source_dir]
+    mod_vars = {'__name__': '__cffi__', '__file__': build_file_name}
+    execfile(build_file_name, mod_vars)
+
+    ffi = mod_vars[ffi_var_name]
+    if callable(ffi):
+        ffi = ffi()
+    ffi.emit_c_code(c_file)
+
+
+if __name__ == '__main__':
+    main()