1 files changed, 217 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..e8c0576fd9b
--- /dev/null
+++ b/src/mesa/glapi/gl_enums.py
@@ -0,0 +1,217 @@
+#!/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]>
+
+import license
+import gl_XML
+import sys, getopt
+
+class PrintGlEnums(gl_XML.gl_print_base):
+
+	def __init__(self):
+		gl_XML.gl_print_base.__init__(self)
+
+		self.name = "gl_enums.py (from Mesa)"
+		self.license = license.bsd_license_template % ( \
+"""Copyright (C) 1999-2005 Brian Paul All Rights Reserved.""", "BRIAN PAUL")
+		self.enum_table = {}
+
+
+	def printRealHeader(self):
+		print '#include "glheader.h"'
+		print '#include "enums.h"'
+		print '#include "imports.h"'
+		print ''
+		print 'typedef struct {'
+		print '   size_t offset;'
+		print '   int n;'
+		print '} enum_elt;'
+		print ''
+		return
+
+	def print_code(self):
+		print """
+#define Elements(x) sizeof(x)/sizeof(*x)
+
+typedef int (*cfunc)(const void *, const void *);
+
+/**
+ * Compare a key name to an element in the \c all_enums array.
+ *
+ * \c bsearch always passes the key as the first parameter and the pointer
+ * to the array element as the second parameter.  We can elimiate some
+ * extra work by taking advantage of that fact.
+ *
+ * \param a  Pointer to the desired enum name.
+ * \param b  Pointer to an element of the \c all_enums array.
+ */
+static int compar_name( const char *a, const enum_elt *b )
+{
+   return _mesa_strcmp( a, & enum_string_table[ b->offset ] );
+}
+
+/**
+ * Compare a key enum value to an element in the \c all_enums array.
+ *
+ * \c bsearch always passes the key as the first parameter and the pointer
+ * to the array element as the second parameter.  We can elimiate some
+ * extra work by taking advantage of that fact.
+ *
+ * \param a  Pointer to the desired enum name.
+ * \param b  Pointer to an index into the \c all_enums array.
+ */
+static int compar_nr( const int *a, const unsigned *b )
+{
+   return a[0] - all_enums[*b].n;
+}
+
+
+static char token_tmp[20];
+
+const char *_mesa_lookup_enum_by_nr( int nr )
+{
+   unsigned * i;
+
+   i = (unsigned *)bsearch( & nr, reduced_enums, Elements(reduced_enums),
+                            sizeof(reduced_enums[0]), (cfunc) compar_nr );
+
+   if ( i != NULL ) {
+      return & enum_string_table[ all_enums[ *i ].offset ];
+   }
+   else {
+      /* this is not re-entrant safe, no big deal here */
+      _mesa_sprintf(token_tmp, "0x%x", nr);
+      return token_tmp;
+   }
+}
+
+int _mesa_lookup_enum_by_name( const char *symbol )
+{
+   enum_elt * f = NULL;
+
+   if ( symbol != NULL ) {
+      f = (enum_elt *)bsearch( symbol, all_enums, Elements(all_enums),
+			       sizeof( enum_elt ), (cfunc) compar_name );
+   }
+
+   return (f != NULL) ? f->n : -1;
+}
+
+"""
+		return
+
+
+	def printBody(self, api):
+		self.process_enums( api )
+
+		keys = self.enum_table.keys()
+		keys.sort()
+
+		name_table = []
+		enum_table = {}
+
+		for enum in keys:
+			low_pri = 9
+			for [name, pri] in self.enum_table[ enum ]:
+				name_table.append( [name, enum] )
+
+				if pri < low_pri:
+					low_pri = pri
+					enum_table[enum] = name
+						
+
+		name_table.sort()
+
+		string_offsets = {}
+		i = 0;
+		print 'static const char enum_string_table[] = '
+		for [name, enum] in name_table:
+			print '   "%s\\0"' % (name)
+			string_offsets[ name ] = i
+			i += len(name) + 1
+
+		print '   ;'
+		print ''
+
+
+		print 'static const enum_elt all_enums[%u] =' % (len(name_table))
+		print '{'
+		for [name, enum] in name_table:
+			print '   { %5u, 0x%08X }, /* %s */' % (string_offsets[name], enum, name)
+		print '};'
+		print ''
+
+		print 'static const unsigned reduced_enums[%u] =' % (len(keys))
+		print '{'
+		for enum in keys:
+			name = enum_table[ enum ]
+			if [name, enum] not in name_table:
+				print '      /* Error! %s, 0x%04x */ 0,' % (name, enum)
+			else:
+				i = name_table.index( [name, enum] )
+
+				print '      %4u, /* %s */' % (i, name)
+		print '};'
+
+
+		self.print_code()
+		return
+
+
+	def process_enums(self, api):
+		self.enum_table = {}
+		
+		for obj in api.enumIterateByName():
+			if obj.value not in self.enum_table:
+				self.enum_table[ obj.value ] = []
+
+
+			name = "GL_" + obj.name
+			priority = obj.priority()
+			self.enum_table[ obj.value ].append( [name, priority] )
+
+
+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
+
+	api = gl_XML.parse_GL_API( file_name )
+
+	printer = PrintGlEnums()
+	printer.Print( api )