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import sys, os, re
import md5
API_FILES = ['arraymethods.c',
'arrayobject.c',
'arraytypes.inc.src',
'multiarraymodule.c',
'scalartypes.inc.src',
'ufuncobject.c',
]
THIS_DIR = os.path.dirname(__file__)
API_FILES = [os.path.join(THIS_DIR, '..', 'src', a) for a in API_FILES]
def remove_whitespace(s):
return ''.join(s.split())
class Function(object):
def __init__(self, name, return_type, args, doc=''):
self.name = name
self.return_type = return_type
self.args = args
self.doc = doc
def _format_arg(self, (typename, name)):
if typename.endswith('*'):
return typename + name
else:
return typename + ' ' + name
def argtypes_string(self):
if not self.args:
return 'void'
argstr = ', '.join(a[0] for a in self.args)
return argstr
def __str__(self):
argstr = ', '.join(self._format_arg(a) for a in self.args)
if self.doc:
doccomment = '/* %s */\n' % self.doc
else:
doccomment = ''
return '%s%s %s(%s)' % (doccomment, self.return_type, self.name, argstr)
def api_hash(self):
m = md5.new()
m.update(remove_whitespace(self.return_type))
m.update('\000')
m.update(self.name)
m.update('\000')
for typename, name in self.args:
m.update(remove_whitespace(typename))
m.update('\000')
return m.hexdigest()[:8]
class ParseError(Exception):
def __init__(self, filename, lineno, msg):
self.filename = filename
self.lineno = lineno
self.msg = msg
def __str__(self):
return '%s:%s:%s' % (self.filename, self.lineno, self.msg)
def skip_brackets(s, lbrac, rbrac):
count = 0
for i, c in enumerate(s):
if c == lbrac:
count += 1
elif c == rbrac:
count -= 1
if count == 0:
return i
raise ValueError("no match '%s' for '%s' (%r)" % (lbrac, rbrac, s))
def split_arguments(argstr):
arguments = []
bracket_counts = {'(': 0, '[': 0}
current_argument = []
state = 0
i = 0
def finish_arg():
if current_argument:
argstr = ''.join(current_argument).strip()
m = re.match(r'(.*(\s+|[*]))(\w+)$', argstr)
if m:
typename = m.group(1).strip()
name = m.group(3)
else:
typename = argstr
name = ''
arguments.append((typename, name))
del current_argument[:]
while i < len(argstr):
c = argstr[i]
if c == ',':
finish_arg()
elif c == '(':
p = skip_brackets(argstr[i:], '(', ')')
current_argument += argstr[i:i+p]
i += p-1
else:
current_argument += c
i += 1
finish_arg()
return arguments
def find_functions(filename, tag='API'):
fo = open(filename, 'r')
functions = []
return_type = None
function_name = None
function_args = []
doclist = []
SCANNING, STATE_DOC, STATE_RETTYPE, STATE_NAME, STATE_ARGS = range(5)
state = SCANNING
tagcomment = '/*' + tag
for lineno, line in enumerate(fo):
try:
line = line.strip()
if state == SCANNING:
if line.startswith(tagcomment):
if line.endswith('*/'):
state = STATE_RETTYPE
else:
state = STATE_DOC
elif state == STATE_DOC:
if line.startswith('*/'):
state = STATE_RETTYPE
else:
line = line.lstrip(' *')
doclist.append(line)
elif state == STATE_RETTYPE: #first line of declaration with return type
m = re.match(r'static\s+(.*)$', line)
if m:
line = m.group(1)
return_type = line
state = STATE_NAME
elif state == STATE_NAME: # second line, with function name
m = re.match(r'(\w+)\s*\(', line)
if m:
function_name = m.group(1)
else:
raise ParseError(filename, lineno+1, 'could not find function name')
function_args.append(line[m.end():])
state = STATE_ARGS
elif state == STATE_ARGS:
if line.startswith('{'): # finished
fargs_str = ' '.join(function_args).rstrip(' )')
fargs = split_arguments(fargs_str)
f = Function(function_name, return_type, fargs,
' '.join(doclist))
functions.append(f)
return_type = None
function_name = None
function_args = []
doclist = []
state = 0
else:
function_args.append(line)
except:
print filename, lineno+1
raise
fo.close()
return functions
def read_order(order_file):
fo = open(order_file, 'r')
order = {}
i = 0
for line in fo:
line = line.strip()
if not line.startswith('#'):
order[line] = i
i += 1
fo.close()
return order
def get_api_functions(tagname, order_file):
if not os.path.exists(order_file):
order_file = os.path.join(THIS_DIR, order_file)
order = read_order(order_file)
functions = []
for f in API_FILES:
functions.extend(find_functions(f, tagname))
dfunctions = []
for func in functions:
o = order[func.name]
dfunctions.append( (o, func) )
dfunctions.sort()
return [a[1] for a in dfunctions]
def add_api_list(offset, APIname, api_list,
module_list, extension_list, init_list):
"""Add the API function declerations to the appropiate lists for use in
the headers.
"""
for k, func in enumerate(api_list):
num = offset + k
astr = "static %s %s \\\n (%s);" % \
(func.return_type, func.name, func.argtypes_string())
module_list.append(astr)
astr = "#define %s \\\n (*(%s (*)(%s)) \\\n"\
" %s[%d])" % (func.name,func.return_type,
func.argtypes_string(), APIname, num)
extension_list.append(astr)
astr = " (void *) %s," % func.name
init_list.append(astr)
def main():
tagname = sys.argv[1]
order_file = sys.argv[2]
functions = get_api_functions(tagname, order_file)
m = md5.new(tagname)
for func in functions:
print func
ah = func.api_hash()
m.update(ah)
print hex(int(ah,16))
print hex(int(m.hexdigest()[:8],16))
if __name__ == '__main__':
main()
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