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#!/usr/bin/env python
##########################################################################
#
# Copyright 2014 VMware, Inc
# 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 the rights
# to use, copy, modify, merge, publish, distribute, sublicense, 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 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS 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.
#
##########################################################################/
#
# Script to half-generate *api.py based on Khronos' *.xml
#
import optparse
import sys
import xml.etree.ElementTree as ET
import c2api
def appendToken(tokens, text):
for token in text.split():
if token.startswith('*'):
for c in token:
tokens.append(c)
else:
tokens.append(token)
def getType(node):
tokens = []
if node.text is not None:
appendToken(tokens, node.text)
ptype = node.find('ptype')
if ptype is not None:
appendToken(tokens, ptype.text)
appendToken(tokens, ptype.tail)
# Array
lenExpr = node.get('len')
if lenExpr is not None:
assert tokens[-1] == '*'
tokens = tokens[:-1]
if lenExpr == "COMPSIZE(pname)":
lenExpr = "_gl_param_size(pname)"
typeText = ' '.join(tokens)
parser = c2api.DeclParser()
parser.tokenize(typeText + ';')
typeExpr = parser.parse_type()
if lenExpr is not None:
if lenExpr == "1":
typeExpr = 'Pointer(%s)' % (typeExpr)
else:
if not lenExpr.isdigit():
lenExpr = '"' + lenExpr + '"'
typeExpr = 'Array(%s, %s)' % (typeExpr, lenExpr)
return typeExpr
def processCommand(prototypes, command):
proto = command.find('proto')
functionName = proto.find('name').text
retType = getType(proto)
args = []
for param in command.findall('param'):
argName = param.find('name').text
#print argName, param.text
argType = getType(param)
if argName.lower() == 'hdc':
argName = 'hDC'
arg = '(%s, "%s")' % (argType, argName)
args.append(arg)
if namespace == 'WGL':
constructor = 'StdFunction'
else:
constructor = 'GlFunction'
prototype = '%s(%s, "%s", [%s])' % (constructor, retType, functionName, ', '.join(args))
prototypes[functionName] = prototype
def processRequire(node, filterName):
nodeName = node.get('name')
if filterName is not None and nodeName != filterName:
return
commands = []
for requireNode in node.findall('require'):
commands.extend(requireNode.findall('command'))
if not commands:
return
functionNames = [command.get('name') for command in commands]
return nodeName, functionNames
def printPrototypes(prototypes, extensionName, functionNames):
print ' # %s' % extensionName
if extensionName == 'GL_EXT_direct_state_access':
functionNames.sort()
for functionName in functionNames:
prototype = prototypes[functionName]
print ' %s,' % prototype
print
def main():
optparser = optparse.OptionParser(
usage='\n\t%prog [options] <xml> ...',
version='%%prog')
optparser.add_option(
'--filter', metavar='NAME',
type='string', dest='filter',
help='filter feature/extension')
(options, args) = optparser.parse_args(sys.argv[1:])
global prototypes
global namespace
for arg in args:
tree = ET.parse(arg)
root = tree.getroot()
prototypes = {}
for commands in root.findall('commands'):
namespace = commands.get('namespace')
for command in commands.findall('command'):
processCommand(prototypes, command)
# Extract features
features = []
for feature in root.findall('feature'):
ret = processRequire(feature, options.filter)
if ret is not None:
features.append(ret)
# Extract extensions
extensions = []
for extension in root.find('extensions').findall('extension'):
ret = processRequire(extension, options.filter)
if ret is not None:
extensions.append(ret)
# Eliminate the functions from features that are in extensions
for extensionName, extensionFunctionNames in extensions:
for featureName, featureFunctionNames in features:
for functionName in extensionFunctionNames:
try:
featureFunctionNames.remove(functionName)
except ValueError:
pass
# Print all
for extensionName, functionNames in features + extensions:
printPrototypes(prototypes, extensionName, functionNames)
if __name__ == '__main__':
main()
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