def _geos_c_version():
func = _lgeos.GEOSversion
func.restype = c_char_p
v = func().split('-')[2]
return tuple(int(n) for n in v.split('.'))
geos_capi_version = geos_c_version = _geos_c_version()
# If we have the new interface, then record a baseline so that we know what
# additional functions are declared in ctypes_declarations.
if geos_c_version >= (1, 5, 0):
start_set = set(_lgeos.__dict__)
# Apply prototypes for the libgeos_c functions
prototype(_lgeos, geos_c_version)
# If we have the new interface, automatically detect all function
# declarations, and declare their re-entrant counterpart.
if geos_c_version >= (1, 5, 0):
end_set = set(_lgeos.__dict__)
new_func_names = end_set - start_set
for func_name in new_func_names:
new_func_name = "%s_r" % func_name
if hasattr(_lgeos, new_func_name):
new_func = getattr(_lgeos, new_func_name)
old_func = getattr(_lgeos, func_name)
new_func.restype = old_func.restype
if old_func.argtypes is None:
# Handle functions that didn't take an argument before,
def _geos_c_version():
func = _lgeos.GEOSversion
func.restype = c_char_p
v = func().split('-')[2]
return tuple(int(n) for n in v.split('.'))
geos_capi_version = geos_c_version = _geos_c_version()
# If we have the new interface, then record a baseline so that we know what
# additional functions are declared in ctypes_declarations.
if geos_c_version >= (1,5,0):
start_set = set(_lgeos.__dict__)
# Apply prototypes for the libgeos_c functions
prototype(_lgeos, geos_c_version)
# If we have the new interface, automatically detect all function
# declarations, and declare their re-entrant counterpart.
if geos_c_version >= (1,5,0):
end_set = set(_lgeos.__dict__)
new_func_names = end_set - start_set
for func_name in new_func_names:
new_func_name = "%s_r" % func_name
if hasattr(_lgeos, new_func_name):
new_func = getattr(_lgeos, new_func_name)
old_func = getattr(_lgeos, func_name)
new_func.restype = old_func.restype
if old_func.argtypes is None:
# Handle functions that didn't take an argument before,
free.restype=None
else:
# Try the major versioned name first, falling back on the unversioned name.
try:
lgeos = PyDLL('libgeos_c.so.1')
except (OSError, ImportError):
lgeos = PyDLL('libgeos_c.so')
except:
raise
free = CDLL('libc.so.6').free
free.argtypes=[c_void_p]
free.restype=None
# Prototype the libgeos_c functions using new code from `tarley` in
# http://trac.gispython.org/lab/ticket/189
prototype(lgeos)
class allocated_c_char_p(c_char_p):
pass
# Exceptions
class ReadingError(Exception):
pass
class DimensionError(Exception):
pass
class TopologicalError(Exception):
pass