Unify "script" and "project" under "util".

util/generate_amalgamation.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+
+import sys
+from os.path import basename, dirname, join, realpath
+from glob import iglob
+import re
+
+INCLUDE_PATTERN = re.compile(r'^\s*#include "([\w.]+)"')
+GUARD_PATTERN = re.compile(r'^#ifndef wren(_\w+)?_h$')
+WREN_DIR = dirname(dirname(realpath(__file__)))
+
+seen_files = set()
+out = sys.stdout
+
+# Prints a plain text file, adding comment markers.
+def add_comment_file(filename):
+  with open(filename, 'r') as f:
+    for line in f:
+      out.write('// ')
+      out.write(line)
+
+# Prints the given C source file, recursively resolving local #includes.
+def add_file(filename):
+  bname = basename(filename)
+  # Only include each file at most once.
+  if bname in seen_files:
+    return
+  once = False
+  path = dirname(filename)
+
+  out.write('// Begin file "{0}"\n'.format(filename))
+  with open(filename, 'r') as f:
+    for line in f:
+      m = INCLUDE_PATTERN.match(line)
+      if m:
+        add_file(join(path, m.group(1)))
+      else:
+        out.write(line)
+      if GUARD_PATTERN.match(line):
+        once = True
+  out.write('// End file "{0}"\n'.format(filename))
+
+  # Only skip header files which use #ifndef guards.
+  # This is necessary because of the X Macro technique.
+  if once:
+    seen_files.add(bname)
+
+# Print license on top.
+add_comment_file(join(WREN_DIR, 'LICENSE'))
+out.write('\n')
+
+# Source files.
+add_file(join(WREN_DIR, 'src', 'include', 'wren.h'))
+
+# Must be included here because of conditional compilation.
+add_file(join(WREN_DIR, 'src', 'vm', 'wren_debug.h'))
+
+for f in iglob(join(WREN_DIR, 'src', 'vm', '*.c')):
+  add_file(f)