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#!/usr/bin/env python
import re
import sys
from xml.dom.minidom import parse, Node
#
# DOM traversal utility functions
#
def findChildren(node, path):
result = []
if len(path)==1:
for i in node.childNodes:
if i.nodeType==Node.ELEMENT_NODE:
if i.tagName==path[0]:
result.append(i)
else:
for i in node.childNodes:
if i.nodeType==Node.ELEMENT_NODE:
if i.tagName==path[0]:
result.extend(findChildren(i, path[1:]))
return result
def findData(node, path):
return [ i.firstChild.data for i in findChildren(node, path) ]
isPointer = re.compile('(.*)([ ]+)([*]+)')
def findParams(node):
n = findData(node, ['name'])[0]
t = ''
for i in node.childNodes:
if i.nodeType==Node.TEXT_NODE:
t += i.data
if i.nodeType==Node.ELEMENT_NODE and i.tagName=='ptype':
t += i.firstChild.data
t.strip()
m = isPointer.match(t)
if m:
t = ('%s%s'%(m.group(1), m.group(3))).strip()
return ( t, n.strip())
def findEnums(dom):
ret = {}
for i in findChildren(dom, [ 'registry', 'enums', 'enum' ]):
n = i.getAttribute('name')
v = i.getAttribute('value')
ret[n] = v
return ret
def findCommands(dom):
ret = {}
for i in findChildren(dom, [ 'registry', 'commands', 'command' ]):
r,n = findParams(findChildren(i, ['proto'])[0])
p = [ findParams(j) for j in findChildren(i, ['param'])]
ret[n] = (r, p)
return ret
def findFeatures(dom):
ret = {}
for i in findChildren(dom, [ 'registry', 'feature' ]):
n = i.getAttribute('name')
e = []
c = []
for j in findChildren(i, [ 'require', 'enum' ]):
e.append(j.getAttribute("name"))
for j in findChildren(i, [ 'require', 'command' ]):
c.append(j.getAttribute("name"))
ret[n] = (e,c)
return ret
def findExtensions(dom):
ret = {}
for i in findChildren(dom, [ 'registry', 'extensions', 'extension' ]):
n = i.getAttribute('name')
e = []
c = []
for j in findChildren(i, [ 'require', 'enum' ]):
e.append(j.getAttribute("name"))
for j in findChildren(i, [ 'require', 'command' ]):
c.append(j.getAttribute("name"))
ret[n] = (e,c)
return ret
def findApi(dom, name):
enums = findEnums(dom)
commands = findCommands(dom)
features = findFeatures(dom)
extensions = findExtensions(dom)
return (enums, commands, features, extensions)
#
#
#
isWGL = re.compile('WGL_([A-Z0-9]+)_.*')
def writeExtension(f, name, extension, enums, commands):
f.write(('%s\n'%name).encode())
url = 'https://www.khronos.org/registry/egl/specs/eglspec.1.5.pdf'
m = isWGL.match(name)
if m:
url = 'https://www.khronos.org/registry/OpenGL/extensions/%s/%s.txt'%(m.group(1), name)
f.write(('%s\n'%(url)).encode())
if name.find('_VERSION_')==-1:
f.write(('%s\n'%name).encode())
else:
f.write('\n'.encode())
f.write('\n'.encode())
enums = [ (j, enums[j]) for j in extension[0] ]
for e in sorted(enums, key=lambda i: i[1]):
f.write(('\t%s %s\n'%(e[0], e[1])).encode())
commands = [ (j, commands[j]) for j in extension[1] ]
for c in sorted(commands):
params = ', '.join( [ '%s %s'%(j[0].strip(), j[1].strip()) for j in c[1][1] ] )
if len(params)==0:
params = 'void'
f.write(('\t%s %s (%s)\n'%(c[1][0].strip(), c[0].strip(), params)).encode())
if __name__ == '__main__':
from argparse import ArgumentParser
import os
parser = ArgumentParser(description='usage: %prog [options] [XML specs...]')
parser.add_argument("--core", dest="core", help="location for core outputs", default='')
parser.add_argument("--api", dest="name", help="API name: egl, wgl, glx, etc", default='')
parser.add_argument("--extensions", dest="extensions", help="location for extensions outputs", default='')
(options, args) = parser.parse_known_args()
options = vars(options)
for i in args:
dom = parse(i)
api = findApi(dom, options['name'])
print('Found {} enums, {} commands, {} features and {} extensions.'.format(
len(api[0]), len(api[1]), len(api[2]), len(api[3])))
if len(options['core']):
for i in api[2].keys():
f = open('%s/%s'%(options['core'], i), 'wb')
writeExtension(f, i, api[2][i], api[0], api[1])
f.close()
if len(options['extensions']):
for i in api[3].keys():
f = open('%s/%s'%(options['extensions'], i), 'wb')
writeExtension(f, i, api[3][i], api[0], api[1])
f.close()
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