generate enums.c file (Zack Rusin)

1 files changed, 183 insertions, 0 deletions

diff --git a/src/mesa/glapi/gl_enums.py b/src/mesa/glapi/gl_enums.py
new file mode 100644
index 00000000000..509afec381e
--- /dev/null
+++ b/src/mesa/glapi/gl_enums.py
@@ -0,0 +1,183 @@
+#!/usr/bin/python2
+# -*- Mode: Python; py-indent-offset: 8 -*-
+
+# (C) Copyright Zack Rusin 2005
+# All Rights Reserved.
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# on the rights to use, copy, modify, merge, publish, distribute, sub
+# license, and/or sell copies of the Software, and to permit persons to whom
+# the Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice (including the next
+# paragraph) shall be included in all copies or substantial portions of the
+# Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+#
+# Authors:
+#    Zack Rusin <[email protected]>
+
+from xml.sax import saxutils
+from xml.sax import make_parser
+from xml.sax.handler import feature_namespaces
+
+import license
+import gl_XML
+import sys, getopt
+
+class PrintGlEnums(gl_XML.FilterGLAPISpecBase):
+	name = "gl_enums.py (from Mesa)"
+
+	def __init__(self):
+		gl_XML.FilterGLAPISpecBase.__init__(self)
+		self.license = license.bsd_license_template % ( \
+"""Copyright (C) 1999-2005 Brian Paul All Rights Reserved.""", "BRIAN PAUL")
+
+
+	def printRealHeader(self):
+		print '#include "glheader.h"'
+		print '#include "enums.h"'
+		print '#include "imports.h"'
+		print ''
+		print 'typedef struct {'
+		print '   const char *c;'
+		print '   int n;'
+		print '} enum_elt;'
+		print ''
+		print 'static enum_elt all_enums[] ='
+		print '{'
+		return
+
+	def printRealFooter(self):
+		print """
+};
+
+#define Elements(x) sizeof(x)/sizeof(*x)
+
+typedef int (*cfunc)(const void *, const void *);
+
+static enum_elt **index1;
+static int sorted;
+
+static int compar_name( const enum_elt *a, const enum_elt *b )
+{
+   return _mesa_strcmp(a->c, b->c);
+}
+
+
+/* note the extra level of indirection
+ */
+static int compar_nr( const enum_elt **a, const enum_elt **b )
+{
+   return (*a)->n - (*b)->n;
+}
+
+
+static void sort_enums( void )
+{
+   GLuint i;
+   index1 = (enum_elt **)MALLOC( Elements(all_enums) * sizeof(enum_elt *) );
+   sorted = 1;
+
+   if (!index1)
+      return;  /* what else can we do? */
+
+   qsort( all_enums, Elements(all_enums), sizeof(*all_enums),
+	  (cfunc) compar_name );
+
+   for (i = 0 ; i < Elements(all_enums) ; i++)
+      index1[i] = &all_enums[i];
+
+   qsort( index1, Elements(all_enums), sizeof(*index1), (cfunc) compar_nr );
+}
+
+
+
+int _mesa_lookup_enum_by_name( const char *symbol )
+{
+   enum_elt tmp;
+   enum_elt *e;
+
+   if (!sorted)
+      sort_enums();
+
+   if (!symbol)
+      return 0;
+
+   tmp.c = symbol;
+   e = (enum_elt *)bsearch( &tmp, all_enums, Elements(all_enums),
+			    sizeof(*all_enums), (cfunc) compar_name );
+
+   return e ? e->n : -1;
+}
+
+
+static char token_tmp[20];
+
+const char *_mesa_lookup_enum_by_nr( int nr )
+{
+   enum_elt tmp, *e, **f;
+
+   if (!sorted)
+      sort_enums();
+
+   tmp.n = nr;
+   e = &tmp;
+
+   f = (enum_elt **)bsearch( &e, index1, Elements(all_enums),
+			     sizeof(*index1), (cfunc) compar_nr );
+
+   if (f) {
+      return (*f)->c;
+   }
+   else {
+      /* this isn't re-entrant safe, no big deal here */
+      _mesa_sprintf(token_tmp, "0x%x", nr);
+      return token_tmp;
+   }
+}
+"""
+		return
+
+	def printFunctions(self):
+		for enum in self.enums:
+			print '   { "%s", 0x%X },' % (enum.name, enum.value)
+		return
+
+
+def show_usage():
+	print "Usage: %s [-f input_file_name]" % sys.argv[0]
+	sys.exit(1)
+
+if __name__ == '__main__':
+	file_name = "gl_API.xml"
+    
+	try:
+		(args, trail) = getopt.getopt(sys.argv[1:], "f:")
+	except Exception,e:
+		show_usage()
+
+	for (arg,val) in args:
+		if arg == "-f":
+			file_name = val
+
+	dh = PrintGlEnums()
+
+	parser = make_parser()
+	parser.setFeature(feature_namespaces, 0)
+	parser.setContentHandler(dh)
+
+	f = open(file_name)
+
+	dh.printHeader()
+	parser.parse(f)
+	dh.printFooter()