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import commands
import re
import string
import sys
def clean_func(buf):
buf = strip_comments(buf)
pat = re.compile(r"""\\\n""", re.MULTILINE)
buf = pat.sub('',buf)
pat = re.compile(r"""^[#].*?$""", re.MULTILINE)
buf = pat.sub('',buf)
pat = re.compile(r"""^(typedef|struct|enum)(\s|.|\n)*?;\s*""", re.MULTILINE)
buf = pat.sub('',buf)
pat = re.compile(r"""\s+""", re.MULTILINE)
buf = pat.sub(' ',buf)
pat = re.compile(r""";\s*""", re.MULTILINE)
buf = pat.sub('\n',buf)
buf = buf.lstrip()
#pat=re.compile(r'\s+([*|&]+)\s*(\w+)')
pat = re.compile(r' \s+ ([*|&]+) \s* (\w+)',re.VERBOSE)
buf = pat.sub(r'\1 \2', buf)
pat = re.compile(r'\s+ (\w+) \[ \s* \]',re.VERBOSE)
buf = pat.sub(r'[] \1', buf)
# buf = string.replace(buf, 'G_CONST_RETURN ', 'const-')
buf = string.replace(buf, 'const ', '')
return buf
def strip_comments(buf):
parts = []
lastpos = 0
while 1:
pos = string.find(buf, '/*', lastpos)
if pos >= 0:
parts.append(buf[lastpos:pos])
pos = string.find(buf, '*/', pos)
if pos >= 0:
lastpos = pos + 2
else:
break
else:
parts.append(buf[lastpos:])
break
return string.join(parts, '')
def find_enums(buf):
enums = []
buf = strip_comments(buf)
buf = re.sub('\n', ' ', buf)
enum_pat = re.compile(r'enum\s*{([^}]*)}\s*([A-Z][A-Za-z]*)(\s|;)')
splitter = re.compile(r'\s*,\s', re.MULTILINE)
pos = 0
while pos < len(buf):
m = enum_pat.search(buf, pos)
if not m: break
name = m.group(2)
vals = m.group(1)
isflags = string.find(vals, '<<') >= 0
entries = []
for val in splitter.split(vals):
if not string.strip(val): continue
entries.append(string.split(val)[0])
enums.append((name, isflags, entries))
pos = m.end()
return enums
#typedef unsigned int dbus_bool_t;
#typedef struct {
#
# }
#typedef struct FooStruct FooStruct;
# typedef void (* DBusAddWatchFunction) (DBusWatch *watch,
# void *data);
def find_typedefs(buf):
typedefs = []
buf = re.sub('\n', ' ', strip_comments(buf))
typedef_pat = re.compile(
r"""typedef\s*(?P<type>\w*)
\s*
([(]\s*\*\s*(?P<callback>[\w* ]*)[)]|{([^}]*)}|)
\s*
(?P<args1>[(](?P<args2>[\s\w*,_]*)[)]|[\w ]*)""",
re.MULTILINE | re.VERBOSE)
pat = re.compile(r"""\s+""", re.MULTILINE)
pos = 0
while pos < len(buf):
m = typedef_pat.search(buf, pos)
if not m:
break
if m.group('type') == 'enum':
pos = m.end()
continue
if m.group('args2') != None:
args = pat.sub(' ', m.group('args2'))
current = '%s (* %s) (%s)' % (m.group('type'),
m.group('callback'),
args)
else:
current = '%s %s' % (m.group('type'), m.group('args1'))
typedefs.append(current)
pos = m.end()
return typedefs
proto_pat = re.compile(r"""
(?P<ret>(-|\w|\&|\*|\s)+\s*) # return type
\s+ # skip whitespace
(?P<func>\w+)\s*[(] # match the function name until the opening (
(?P<args>.*?)[)] # group the function arguments
""", re.IGNORECASE|re.VERBOSE)
arg_split_pat = re.compile("\s*,\s*")
def find_functions(buf):
functions = []
buf = clean_func(buf)
buf = string.split(buf,'\n')
for p in buf:
if len(p) == 0:
continue
m = proto_pat.match(p)
if m == None:
continue
func = m.group('func')
ret = m.group('ret')
args = m.group('args')
args = arg_split_pat.split(args)
# for i in range(len(args)):
# spaces = string.count(args[i], ' ')
# if spaces > 1:
# args[i] = string.replace(args[i], ' ', '-', spaces - 1)
functions.append((func, ret, args))
return functions
class Writer:
def __init__(self, filename, enums, typedefs, functions):
if not (enums or typedefs or functions):
return
print 'cdef extern from "%s":' % filename
self.output_enums(enums)
self.output_typedefs(typedefs)
self.output_functions(functions)
print ' pass'
print
def output_enums(self, enums):
for enum in enums:
print ' ctypedef enum %s:' % enum[0]
if enum[1] == 0:
for item in enum[2]:
print ' %s' % item
else:
i = 0
for item in enum[2]:
print ' %s' % item
# print ' %s = 1 << %d' % (item, i)
i += 1
print
def output_typedefs(self, typedefs):
for typedef in typedefs:
if typedef.find('va_list') != -1:
continue
parts = typedef.split()
if parts[0] == 'struct':
if parts[-2] == parts[-1]:
parts = parts[:-1]
print ' ctypedef %s' % ' '.join(parts)
else:
print ' ctypedef %s' % typedef
def output_functions(self, functions):
for func, ret, args in functions:
if func[0] == '_':
continue
str = ', '.join(args)
if str.find('...') != -1:
continue
if str.find('va_list') != -1:
continue
if str.strip() == 'void':
continue
print ' %-20s %s (%s)' % (ret, func, str)
def do_buffer(name, buffer):
functions = find_functions(buffer)
typedefs = find_typedefs(buffer)
enums = find_enums(buffer)
Writer(name, enums, typedefs, functions)
def do_header(filename, name=None):
if name == None:
name = filename
buffer = ""
for line in open(filename).readlines():
if line[0] == '#':
continue
buffer += line
print '# -- %s -- ' % filename
do_buffer(name, buffer)
filename = sys.argv[1]
if filename.endswith('.h'):
do_header(filename)
raise SystemExit
cppflags = ""
for flag in sys.argv[2:]:
cppflags = cppflags + " " + flag
fd = open(filename)
for line in fd.readlines():
if line.startswith('#include'):
filename = line.split(' ')[1][1:-2]
command = "echo '%s'|cpp %s" % (line, cppflags)
sys.stderr.write('running %s' % (command))
output = commands.getoutput(command)
do_buffer(filename, output)
else:
print line[:-1]
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