Get rid of freeze (now its own directory).

Added some new demos.  Fixed a few others.

Tools/scripts/h2py.py

@@ -1,32 +1,43 @@
 #! /usr/local/bin/python
 
-# Read #define's from stdin and translate to Python code on stdout.
-# Very primitive: non-#define's are ignored, as is anything that isn't
-# valid Python as it stands.
+# Read #define's and translate to Python code.
+# Handle #include statements.
+# Handle #define macros with one argument.
+# Anything that isn't recognized or doesn't translate into valid
+# Python is ignored.
+
+# Without filename arguments, acts as a filter.
 # If one or more filenames are given, output is written to corresponding
 # filenames in the local directory, translated to all uppercase, with
 # the extension replaced by ".py".
+
 # By passing one or more options of the form "-i regular_expression"
 # you can specify additional strings to be ignored.  This is useful
 # e.g. to ignore casts to u_long: simply specify "-i '(u_long)'".
 
 # XXX To do:
 # - 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 #include?
-# - what to do about macros with parameters?
-# - reject definitions with semicolons in them
+# - what to do about macros with multiple parameters?
 
-import sys, regex, string, getopt, os
+import sys, regex, regsub, string, getopt, os
 
 p_define = regex.compile('^#[\t ]*define[\t ]+\([a-zA-Z0-9_]+\)[\t ]+')
 
+p_macro = regex.compile(
+  '^#[\t ]*define[\t ]+\([a-zA-Z0-9_]+\)(\([_a-zA-Z][_a-zA-Z0-9]*\))[\t ]+')
+
+p_include = regex.compile('^#[\t ]*include[\t ]+<\([a-zA-Z0-9_/\.]+\)')
+
 p_comment = regex.compile('/\*\([^*]+\|\*+[^/]\)*\(\*+/\)?')
 
 ignores = [p_comment]
 
+p_char = regex.compile("'\(\\\\.[^\\\\]*\|[^\\\\]\)'")
+
+filedict = {}
+
 def main():
 	opts, args = getopt.getopt(sys.argv[1:], 'i:')
 	for o, a in opts:
@@ -47,40 +58,65 @@ def main():
 			outfile = outfile + '.py'
 			outfp = open(outfile, 'w')
 			outfp.write('# Generated by h2py from %s\n' % filename)
+			filedict = {}
+			if filename[:13] == '/usr/include/':
+				filedict[filename[13:]] = None
 			process(fp, outfp)
 			outfp.close()
 			fp.close()
 
-def process(fp, outfp):
-	env = {}
+def process(fp, outfp, env = {}):
 	lineno = 0
 	while 1:
 		line = fp.readline()
 		if not line: break
 		lineno = lineno + 1
-		# gobble up continuation lines
-		while line[-2:] == '\\\n':
-			nextline = fp.readline()
-			if not nextline: break
-			lineno = lineno + 1
-			line = line + nextline
 		n = p_define.match(line)
 		if n >= 0:
+			# gobble up continuation lines
+			while line[-2:] == '\\\n':
+				nextline = fp.readline()
+				if not nextline: break
+				lineno = lineno + 1
+				line = line + nextline
 			name = p_define.group(1)
 			body = line[n:]
 			# replace ignored patterns by spaces
 			for p in ignores:
-				while p.search(body) >= 0:
-					a, b = p.regs[0]
-					body = body[:a] + ' ' + body[b:]
+				body = regsub.gsub(p, ' ', body)
+			# replace char literals by ord(...)
+			body = regsub.gsub(p_char, 'ord(\\0)', body)
 			stmt = '%s = %s\n' % (name, string.strip(body))
 			ok = 0
 			try:
 				exec stmt in env
-				ok = 1
 			except:
 				sys.stderr.write('Skipping: %s' % stmt)
-			if ok:
+			else:
 				outfp.write(stmt)
-
+		n =p_macro.match(line)
+		if n >= 0:
+			macro, arg = p_macro.group(1, 2)
+			body = line[n:]
+			for p in ignores:
+				body = regsub.gsub(p, ' ', body)
+			body = regsub.gsub(p_char, 'ord(\\0)', body)
+			stmt = 'def %s(%s): return %s\n' % (macro, arg, body)
+			try:
+				exec stmt in env
+			except:
+				sys.stderr.write('Skipping: %s' % stmt)
+			else:
+				outfp.write(stmt)
+		if p_include.match(line) >= 0:
+			regs = p_include.regs
+			a, b = regs[1]
+			filename = line[a:b]
+			if not filedict.has_key(filename):
+				filedict[filename] = None
+				outfp.write(
+					'\n# Included from %s\n' % filename)
+				inclfp = open('/usr/include/' + filename, 'r')
+				process(inclfp, outfp, env)
 main()
+