Initial revision

Tools/scripts/h2py.py

@@ -0,0 +1,50 @@
+#! /ufs/guido/bin/sgi/python
+#! /usr/local/python
+
+# Read #define's from stdin and translate to Python code on stdout.
+# Very primitive: non-#define's are ignored, no check for valid Python
+# syntax is made -- you will have to edit the output in most cases.
+
+# XXX To do:
+# - accept filename arguments
+# - turn trailing C comments into Python comments
+# - turn C string quotes into Python comments
+# - turn C Boolean operators "&& || !" into Python "and or not"
+# - what to do about #if(def)?
+# - what to do about macros with parameters?
+# - reject definitions with semicolons in them
+
+import sys, regex, string
+
+p_define = regex.compile('^#[\t ]*define[\t ]+\([a-zA-Z0-9_]+\)[\t ]+')
+
+p_comment = regex.compile('/\*\([^*]+\|\*+[^/]\)*\*+/')
+
+def main():
+	process(sys.stdin)
+
+def process(fp):
+	lineno = 0
+	while 1:
+		line = fp.readline()
+		if not line: break
+		lineno = lineno + 1
+		if p_define.match(line) >= 0:
+			# gobble up continuation lines
+			while line[-2:] == '\\\n':
+				nextline = fp.readline()
+				if not nextline: break
+				lineno = lineno + 1
+				line = line + nextline
+			regs = p_define.regs
+			a, b = regs[1] # where the macro name is
+			name = line[a:b]
+			a, b = regs[0] # the whole match
+			body = line[b:]
+			# replace comments by spaces
+			while p_comment.search(body) >= 0:
+				a, b = p_comment.regs[0]
+				body = body[:a] + ' ' + body[b:]
+			print name, '=', string.strip(body)
+
+main()