# -*- coding: utf-8 -*- # pyswip -- Python SWI-Prolog bridge # (c) 2006-2007 Yüce TEKOL # (c) 2010-2011 Manuel ROTTER # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, # MA 02110-1301, USA. import sys import os import warnings from subprocess import Popen, PIPE from ctypes import * from ctypes.util import find_library def _fixWindowsPath(dll): """ When the path to the DLL is not in Windows search path, Windows will not be able to find other DLLs on the same directory, so we have to add it to the path. This function takes care of it. :param dll: File name of the DLL :type dll: string """ if sys.platform[:3] != 'win': return # Nothing to do here pathToDll = os.path.dirname(dll) currentWindowsPath = os.getenv('PATH') if pathToDll not in currentWindowsPath: # We will prepend the path, to avoid conflicts between DLLs newPath = pathToDll + ';' + currentWindowsPath os.putenv('PATH', newPath) def _findYap(): """ This function makes a big effort to find the path to the SWI-Prolog shared library. Since this is both OS dependent and installation dependent, we may not aways succeed. If we do, we return a name/path that can be used by CDLL(). Otherwise we raise an exception. :return: Name or path to the library that can be used by CDLL :rtype: String :raises ImportError: If we cannot guess the name of the library """ # Now begins the guesswork platform = sys.platform[:3] # use YAPLIBDIR first path=os.getenv('YAPLIBDIR') if path is not None: if platform == 'lin': name = 'libYap.so' elif platform == 'dar': name = 'libYap.dylib' path = os.path.join(path, name) if os.path.exists(path): return path # No matter what the platform is, the first try should alway be # find_library. path = find_library('Yap') # or find_library('swipl') or find_library('pl') if path is not None: return path if platform == 'win': # In Windows, we have the default installer path and # the registry to look dllName = 'yap.dll' # First try: check the usual installation path (this is faster but # hardcoded) programFiles = os.getenv('ProgramFiles') path = os.path.join(programFiles, r'pl\bin', dllName) if os.path.exists(path): return path # Second try: use reg.exe to find the installation path in the registry # (reg should be installed in all Windows XPs) try: cmd = Popen(['reg', 'query', r'HKEY_LOCAL_MACHINE\Software\SWI\Prolog', '/v', 'home'], stdout=PIPE) ret = cmd.communicate() # Result is like: # ! REG.EXE VERSION 3.0 # # HKEY_LOCAL_MACHINE\Software\SWI\Prolog # home REG_SZ C:\Program Files\pl # (Note: spaces are \t in the output) ret = ret[0].splitlines() ret = [line for line in ret if len(line) > 0] data = ret[-1].split('\t') path = data[-1] path = os.path.join(path, 'bin', dllName) if os.path.exists(path): return path except OSError: # reg.exe not found? Weird... pass # Last try: maybe it is in the current dir if os.path.exists(dllName): return dllName elif platform == 'lin': # In Linux we will try some hardcoded paths. find_library will have # already done almost all we can paths = ['/lib', '/usr/lib', '/usr/local/lib', '.', './lib'] name = 'libYap.so' #, 'libswipl.so', 'libpl.so'] for path in paths: path = os.path.join(path, name) if os.path.exists(path): return path spaths=os.getenv('LD_LIBRARY_DIR') if (spaths): paths = spaths.split(':') for path in paths: path = os.path.join(path, name) if os.path.exists(path): return path elif platform == "dar": # Help with MacOS is welcome!! paths = ['.', './lib'] names = ['libYap.dylib'] #, 'libswipl.dylib', 'libpl.dylib'] for name in names: for path in paths: path = os.path.join(path, name) if os.path.exists(path): return path # Last resource: see if executable is on the path try: # try to get library path from swipl executable. cmd = Popen(['yap', '-dump-runtime-variables'], stdout=PIPE) ret = cmd.communicate() # Parse the output into a dictionary ret = ret[0].replace(';', '').splitlines() ret = [line.split('=', 1) for line in ret] rtvars = dict((name, value[1:-1]) for name, value in ret) if rtvars['PLSHARED'] == 'yes': # determine platform specific path if platform in ("win", "cyg"): dllName = rtvars['PLLIB'][:-4] + '.' + rtvars['PLSOEXT'] path = os.path.join(rtvars['PLBASE'], 'bin') else: # assume UNIX-like dllName = 'lib' + rtvars['PLLIB'][2:] + '.' + rtvars['PLSOEXT'] path = os.path.join(rtvars['PLBASE'], 'lib', rtvars['PLARCH']) fullName = os.path.join(path, dllName) if os.path.exists(fullName): return fullName # If it does not exist, search for a name like dllName in path files = os.listdir(path) for f in files: if dllName in f: fullName = os.path.join(path, f) return fullName else: # PLSHARED="no" raise ImportError('SWI-Prolog is not installed as a shared library.') except (OSError, KeyError): # KeyError from accessing rtvars pass # This is a catch all raise raise ImportError('Could not find the SWI-Prolog library in this platform. ' 'If you are sure it is installed, please open an issue.') class c_void(Structure): _fields_ = [('dummy', c_int)] c_void_p = POINTER(c_void) # Load the library path = _findYap() _fixWindowsPath(path) print path _lib = CDLL(path) # PySWIP constants PYSWIP_MAXSTR = 1024 c_int_p = POINTER(c_int) c_long_p = POINTER(c_long) c_double_p = POINTER(c_double) # constants (from SWI-Prolog.h) # PL_unify_term() arguments PL_VARIABLE = 1 # nothing PL_ATOM = 2 # const char PL_INTEGER = 3 # int PL_FLOAT = 4 # double PL_STRING = 5 # const char * PL_TERM = 6 # # PL_unify_term() PL_FUNCTOR = 10 # functor_t, arg ... PL_LIST = 11 # length, arg ... PL_CHARS = 12 # const char * PL_POINTER = 13 # void * # /* PlArg::PlArg(text, type) */ #define PL_CODE_LIST (14) /* [ascii...] */ #define PL_CHAR_LIST (15) /* [h,e,l,l,o] */ #define PL_BOOL (16) /* PL_set_feature() */ #define PL_FUNCTOR_CHARS (17) /* PL_unify_term() */ #define _PL_PREDICATE_INDICATOR (18) /* predicate_t (Procedure) */ #define PL_SHORT (19) /* short */ #define PL_INT (20) /* int */ #define PL_LONG (21) /* long */ #define PL_DOUBLE (22) /* double */ #define PL_NCHARS (23) /* unsigned, const char * */ #define PL_UTF8_CHARS (24) /* const char * */ #define PL_UTF8_STRING (25) /* const char * */ #define PL_INT64 (26) /* int64_t */ #define PL_NUTF8_CHARS (27) /* unsigned, const char * */ #define PL_NUTF8_CODES (29) /* unsigned, const char * */ #define PL_NUTF8_STRING (30) /* unsigned, const char * */ #define PL_NWCHARS (31) /* unsigned, const wchar_t * */ #define PL_NWCODES (32) /* unsigned, const wchar_t * */ #define PL_NWSTRING (33) /* unsigned, const wchar_t * */ #define PL_MBCHARS (34) /* const char * */ #define PL_MBCODES (35) /* const char * */ #define PL_MBSTRING (36) /* const char * */ # /******************************** # * NON-DETERMINISTIC CALL/RETURN * # *********************************/ # # Note 1: Non-deterministic foreign functions may also use the deterministic # return methods PL_succeed and PL_fail. # # Note 2: The argument to PL_retry is a 30 bits signed integer (long). PL_FIRST_CALL = 0 PL_CUTTED = 1 PL_REDO = 2 PL_FA_NOTRACE = 0x01 # foreign cannot be traced PL_FA_TRANSPARENT = 0x02 # foreign is module transparent PL_FA_NONDETERMINISTIC = 0x04 # foreign is non-deterministic PL_FA_VARARGS = 0x08 # call using t0, ac, ctx PL_FA_CREF = 0x10 # Internal: has clause-reference */ # /******************************* # * CALL-BACK * # *******************************/ PL_Q_DEBUG = 0x01 # = TRUE for backward compatibility PL_Q_NORMAL = 0x02 # normal usage PL_Q_NODEBUG = 0x04 # use this one PL_Q_CATCH_EXCEPTION = 0x08 # handle exceptions in C PL_Q_PASS_EXCEPTION = 0x10 # pass to parent environment PL_Q_DETERMINISTIC = 0x20 # call was deterministic # /******************************* # * BLOBS * # *******************************/ #define PL_BLOB_MAGIC_B 0x75293a00 /* Magic to validate a blob-type */ #define PL_BLOB_VERSION 1 /* Current version */ #define PL_BLOB_MAGIC (PL_BLOB_MAGIC_B|PL_BLOB_VERSION) #define PL_BLOB_UNIQUE 0x01 /* Blob content is unique */ #define PL_BLOB_TEXT 0x02 /* blob contains text */ #define PL_BLOB_NOCOPY 0x04 /* do not copy the data */ #define PL_BLOB_WCHAR 0x08 /* wide character string */ # /******************************* # * CHAR BUFFERS * # *******************************/ CVT_ATOM = 0x0001 CVT_STRING = 0x0002 CVT_LIST = 0x0004 CVT_INTEGER = 0x0008 CVT_FLOAT = 0x0010 CVT_VARIABLE = 0x0020 CVT_NUMBER = CVT_INTEGER | CVT_FLOAT CVT_ATOMIC = CVT_NUMBER | CVT_ATOM | CVT_STRING CVT_WRITE = 0x0040 # as of version 3.2.10 CVT_ALL = CVT_ATOMIC | CVT_LIST CVT_MASK = 0x00ff BUF_DISCARDABLE = 0x0000 BUF_RING = 0x0100 BUF_MALLOC = 0x0200 CVT_EXCEPTION = 0x10000 # throw exception on error argv = (c_char_p*(len(sys.argv) + 1))() for i, arg in enumerate(sys.argv): argv[i] = arg argv[-1] = None argc = len(sys.argv) # types atom_t = c_ulong term_t = c_ulong fid_t = c_ulong module_t = c_void_p predicate_t = c_void_p record_t = c_void_p qid_t = c_ulong PL_fid_t = c_ulong control_t = c_void_p PL_engine_t = c_void_p functor_t = c_ulong PL_atomic_t = c_ulong foreign_t = c_ulong pl_wchar_t = c_wchar ##_lib.PL_initialise(len(sys.argv), _argv) PL_initialise = _lib.PL_initialise PL_initialise.argtypes = [c_int, POINTER(c_char_p)] PL_open_foreign_frame = _lib.PL_open_foreign_frame PL_open_foreign_frame.restype = fid_t PL_new_term_ref = _lib.PL_new_term_ref PL_new_term_ref.restype = term_t PL_new_term_refs = _lib.PL_new_term_refs PL_new_term_refs.restype = term_t PL_chars_to_term = _lib.PL_chars_to_term PL_chars_to_term.argtypes = [c_char_p, term_t] PL_call = _lib.PL_call PL_call.argtypes = [term_t, module_t] PL_call_predicate = _lib.PL_call_predicate PL_call_predicate.argtypes = [module_t, c_int, predicate_t, term_t] PL_discard_foreign_frame = _lib.PL_discard_foreign_frame PL_discard_foreign_frame.argtypes = [fid_t] PL_put_list_chars = _lib.PL_put_list_chars PL_put_list_chars.argtypes = [term_t, c_char_p] #PL_put_list_chars = _lib.PL_put_list_nchars #PL_put_list_nchars.argtypes = [term_t, c_size_t, c_char_p] #PL_EXPORT(void) PL_register_atom(atom_t a); PL_register_atom = _lib.PL_register_atom PL_register_atom.argtypes = [atom_t] #PL_EXPORT(void) PL_unregister_atom(atom_t a); PL_unregister_atom = _lib.PL_unregister_atom PL_unregister_atom.argtypes = [atom_t] #PL_EXPORT(atom_t) PL_functor_name(functor_t f); PL_functor_name = _lib.PL_functor_name PL_functor_name.argtypes = [functor_t] PL_functor_name.restype = atom_t #PL_EXPORT(int) PL_functor_arity(functor_t f); PL_functor_arity = _lib.PL_functor_arity PL_functor_arity.argtypes = [functor_t] # /* Get C-values from Prolog terms */ #PL_EXPORT(int) PL_get_atom(term_t t, atom_t *a); PL_get_atom = _lib.PL_get_atom PL_get_atom.argtypes = [term_t, POINTER(atom_t)] PL_get_atom_ex = _lib.PL_get_atom_ex PL_get_atom_ex.argtypes = [term_t, POINTER(atom_t)] #PL_EXPORT(int) PL_get_atom_chars(term_t t, char **a); PL_get_atom_chars = _lib.PL_get_atom_chars PL_get_atom_chars.argtypes = [term_t, POINTER(c_char_p)] PL_get_atom_nchars = _lib.PL_get_atom_nchars PL_get_atom_nchars.argtypes = [term_t, POINTER(c_size_t), POINTER(c_char_p)] #PL_EXPORT(int) PL_get_bool(term_t t, int *value); PL_get_bool = _lib.PL_get_bool PL_get_bool.argtypes = [term_t, POINTER(c_int)] ##define PL_get_string_chars(t, s, l) PL_get_string(t,s,l) # /* PL_get_string() is depricated */ #PL_EXPORT(int) PL_get_string(term_t t, char **s, size_t *len); #PL_get_string = _lib.PL_get_string #PL_get_string_chars = PL_get_string_chars #PL_get_string_chars.argtypes = [term_t, POINTER(c_char_p), c_int_p] #PL_EXPORT(int) PL_get_chars(term_t t, char **s, unsigned int flags); PL_get_chars = _lib.PL_get_chars PL_get_chars.argtypes = [term_t, POINTER(c_char_p), c_uint] #PL_EXPORT(int) PL_get_list_chars(term_t l, char **s, # unsigned int flags); #PL_EXPORT(int) PL_get_atom_nchars(term_t t, size_t *len, char **a); #PL_EXPORT(int) PL_get_list_nchars(term_t l, # size_t *len, char **s, # unsigned int flags); #PL_EXPORT(int) PL_get_nchars(term_t t, # size_t *len, char **s, # unsigned int flags); #PL_EXPORT(int) PL_get_integer(term_t t, int *i); PL_get_integer = _lib.PL_get_integer PL_get_integer.argtypes = [term_t, c_int_p] #PL_EXPORT(int) PL_get_long(term_t t, long *i); PL_get_long = _lib.PL_get_long PL_get_long.argtypes = [term_t, c_long_p] #PL_EXPORT(int) PL_get_pointer(term_t t, void **ptr); PL_get_pointer = _lib.PL_get_pointer PL_get_pointer.argtypes = [term_t, POINTER(c_void_p)] #PL_EXPORT(int) PL_get_float(term_t t, double *f); PL_get_float = _lib.PL_get_float PL_get_float.argtypes = [term_t, c_double_p] #PL_EXPORT(int) PL_get_functor(term_t t, functor_t *f); PL_get_functor = _lib.PL_get_functor #PL_get_functor.argtypes = [term_t, c_ulong] PL_get_functor.argtypes = [term_t, POINTER(functor_t)] #PL_EXPORT(int) PL_get_name_arity(term_t t, atom_t *name, int *arity); PL_get_name_arity = _lib.PL_get_name_arity PL_get_name_arity.argtypes = [term_t, POINTER(atom_t), POINTER(c_int)] #PL_EXPORT(int) PL_get_module(term_t t, module_t *module); #PL_EXPORT(int) PL_get_arg(int index, term_t t, term_t a); PL_get_arg = _lib.PL_get_arg PL_get_arg.argtypes = [c_int, term_t, term_t] #PL_EXPORT(int) PL_get_list(term_t l, term_t h, term_t t); #PL_EXPORT(int) PL_get_head(term_t l, term_t h); PL_get_head = _lib.PL_get_head PL_get_head.argtypes = [term_t, term_t] #PL_EXPORT(int) PL_get_tail(term_t l, term_t t); PL_get_tail = _lib.PL_get_tail PL_get_tail.argtypes = [term_t, term_t] #PL_EXPORT(int) PL_get_nil(term_t l); PL_get_nil = _lib.PL_get_nil PL_get_nil.argtypes = [term_t] #PL_EXPORT(int) PL_get_term_value(term_t t, term_value_t *v); #PL_EXPORT(char *) PL_quote(int chr, const char *data); PL_put_atom_chars = _lib.PL_put_atom_chars PL_put_atom_chars.argtypes = [term_t, c_char_p] PL_put_atom_nchars = _lib.PL_put_atom_nchars PL_put_atom_nchars.argtypes = [term_t, c_size_t, c_char_p] PL_atom_chars = _lib.PL_atom_chars PL_atom_chars.argtypes = [atom_t] PL_atom_chars.restype = c_char_p PL_predicate = _lib.PL_predicate PL_predicate.argtypes = [c_char_p, c_int, c_char_p] PL_predicate.restype = predicate_t PL_pred = _lib.PL_pred PL_pred.argtypes = [functor_t, module_t] PL_pred.restype = predicate_t PL_open_query = _lib.PL_open_query PL_open_query.argtypes = [module_t, c_int, predicate_t, term_t] PL_open_query.restype = qid_t PL_next_solution = _lib.PL_next_solution PL_next_solution.argtypes = [qid_t] PL_copy_term_ref = _lib.PL_copy_term_ref PL_copy_term_ref.argtypes = [term_t] PL_copy_term_ref.restype = term_t PL_get_list = _lib.PL_get_list PL_get_list.argtypes = [term_t, term_t, term_t] PL_close_query = _lib.PL_close_query PL_close_query.argtypes = [qid_t] #void PL_cut_query(qid) PL_cut_query = _lib.PL_cut_query PL_cut_query.argtypes = [qid_t] PL_halt = _lib.PL_halt PL_halt.argtypes = [c_int] PL_unify_integer = _lib.PL_unify_integer PL_unify_integer.argtypes = [term_t,c_int] PL_unify = _lib.PL_unify PL_unify.argtypes = [term_t,term_t] PL_unify_arg = _lib.PL_unify_arg PL_unify_arg.argtypes = [c_int,term_t,term_t] # Verify types PL_term_type = _lib.PL_term_type PL_term_type.argtypes = [term_t] PL_term_type.restype = c_int PL_is_variable = _lib.PL_is_variable PL_is_variable.argtypes = [term_t] PL_is_variable.restype = c_int PL_is_ground = _lib.PL_is_ground PL_is_ground.argtypes = [term_t] PL_is_ground.restype = c_int PL_is_atom = _lib.PL_is_atom PL_is_atom.argtypes = [term_t] PL_is_atom.restype = c_int PL_is_integer = _lib.PL_is_integer PL_is_integer.argtypes = [term_t] PL_is_integer.restype = c_int PL_is_string = _lib.PL_is_string PL_is_string.argtypes = [term_t] PL_is_string.restype = c_int PL_is_float = _lib.PL_is_float PL_is_float.argtypes = [term_t] PL_is_float.restype = c_int #PL_is_rational = _lib.PL_is_rational #PL_is_rational.argtypes = [term_t] #PL_is_rational.restype = c_int PL_is_compound = _lib.PL_is_compound PL_is_compound.argtypes = [term_t] PL_is_compound.restype = c_int PL_is_functor = _lib.PL_is_functor PL_is_functor.argtypes = [term_t, functor_t] PL_is_functor.restype = c_int PL_is_list = _lib.PL_is_list PL_is_list.argtypes = [term_t] PL_is_list.restype = c_int PL_is_atomic = _lib.PL_is_atomic PL_is_atomic.argtypes = [term_t] PL_is_atomic.restype = c_int PL_is_number = _lib.PL_is_number PL_is_number.argtypes = [term_t] PL_is_number.restype = c_int # /* Assign to term-references */ #PL_EXPORT(void) PL_put_variable(term_t t); PL_put_variable = _lib.PL_put_variable PL_put_variable.argtypes = [term_t] PL_put_variable.restype = None #PL_EXPORT(void) PL_put_atom(term_t t, atom_t a); #PL_EXPORT(void) PL_put_atom_chars(term_t t, const char *chars); #PL_EXPORT(void) PL_put_string_chars(term_t t, const char *chars); #PL_EXPORT(void) PL_put_list_chars(term_t t, const char *chars); #PL_EXPORT(void) PL_put_list_codes(term_t t, const char *chars); #PL_EXPORT(void) PL_put_atom_nchars(term_t t, size_t l, const char *chars); #PL_EXPORT(void) PL_put_string_nchars(term_t t, size_t len, const char *chars); #PL_EXPORT(void) PL_put_list_nchars(term_t t, size_t l, const char *chars); #PL_EXPORT(void) PL_put_list_ncodes(term_t t, size_t l, const char *chars); #PL_EXPORT(void) PL_put_integer(term_t t, long i); PL_put_integer = _lib.PL_put_integer PL_put_integer.argtypes = [term_t, c_long] PL_put_integer.restype = None #PL_EXPORT(void) PL_put_pointer(term_t t, void *ptr); #PL_EXPORT(void) PL_put_float(term_t t, double f); #PL_EXPORT(void) PL_put_functor(term_t t, functor_t functor); PL_put_functor = _lib.PL_put_functor PL_put_functor.argtypes = [term_t, functor_t] PL_put_functor.restype = None #PL_EXPORT(void) PL_put_list(term_t l); PL_put_list = _lib.PL_put_list PL_put_list.argtypes = [term_t] PL_put_list.restype = None #PL_EXPORT(void) PL_put_nil(term_t l); PL_put_nil = _lib.PL_put_nil PL_put_nil.argtypes = [term_t] PL_put_nil.restype = None #PL_EXPORT(void) PL_put_term(term_t t1, term_t t2); PL_put_term = _lib.PL_put_term PL_put_term.argtypes = [term_t, term_t] PL_put_term.restype = None # /* construct a functor or list-cell */ #PL_EXPORT(void) PL_cons_functor(term_t h, functor_t f, ...); #class _PL_cons_functor(object): #PL_cons_functor = _lib.PL_cons_functor # FIXME: #PL_cons_functor.argtypes = [term_t, functor_t, #PL_EXPORT(void) PL_cons_functor_v(term_t h, functor_t fd, term_t a0); PL_cons_functor_v = _lib.PL_cons_functor_v PL_cons_functor_v.argtypes = [term_t, functor_t, term_t] PL_cons_functor_v.restype = None #PL_EXPORT(void) PL_cons_list(term_t l, term_t h, term_t t); PL_cons_list = _lib.PL_cons_list PL_cons_list.argtypes = [term_t, term_t, term_t] # # term_t PL_exception(qid_t qid) PL_exception = _lib.PL_exception PL_exception.argtypes = [qid_t] PL_exception.restype = term_t # #func_t = CFUNCTYPE(c_int) PL_register_foreign = _lib.PL_register_foreign PL_register_foreign.argtypes = [c_char_p, c_int, c_void_p, c_int] # #PL_EXPORT(atom_t) PL_new_atom(const char *s); PL_new_atom = _lib.PL_new_atom PL_new_atom.argtypes = [c_char_p] PL_new_atom.restype = atom_t #PL_EXPORT(functor_t) PL_new_functor(atom_t f, int a); PL_new_functor = _lib.PL_new_functor PL_new_functor.argtypes = [atom_t, c_int] PL_new_functor.restype = functor_t # /******************************* # * RECORDED DATABASE * # *******************************/ # #PL_EXPORT(record_t) PL_record(term_t term); PL_record = _lib.PL_record PL_record.argtypes = [term_t] PL_record.restype = record_t #PL_EXPORT(void) PL_recorded(record_t record, term_t term); PL_recorded = _lib.PL_recorded PL_recorded.argtypes = [record_t,term_t] #PL_EXPORT(void) PL_erase(record_t record); PL_erase = _lib.PL_erase PL_erase.argtypes = [record_t] # #PL_EXPORT(char *) PL_record_external(term_t t, size_t *size); #PL_EXPORT(int) PL_recorded_external(const char *rec, term_t term); #PL_EXPORT(int) PL_erase_external(char *rec); PL_new_module = _lib.PL_new_module PL_new_module.argtypes = [atom_t] PL_new_module.restype = module_t intptr_t = c_long ssize_t = intptr_t wint_t = c_uint #typedef struct #{ # int __count; # union # { # wint_t __wch; # char __wchb[4]; # } __value; /* Value so far. */ #} __mbstate_t; class _mbstate_t_value(Union): _fields_ = [("__wch",wint_t), ("__wchb",c_char*4)] class mbstate_t(Structure): _fields_ = [("__count",c_int), ("__value",_mbstate_t_value)] # stream related funcs Sread_function = CFUNCTYPE(ssize_t, c_void_p, c_char_p, c_size_t) Swrite_function = CFUNCTYPE(ssize_t, c_void_p, c_char_p, c_size_t) Sseek_function = CFUNCTYPE(c_long, c_void_p, c_long, c_int) Sseek64_function = CFUNCTYPE(c_int64, c_void_p, c_int64, c_int) Sclose_function = CFUNCTYPE(c_int, c_void_p) Scontrol_function = CFUNCTYPE(c_int, c_void_p, c_int, c_void_p) # IOLOCK IOLOCK = c_void_p # IOFUNCTIONS class IOFUNCTIONS(Structure): _fields_ = [("read",Sread_function), ("write",Swrite_function), ("seek",Sseek_function), ("close",Sclose_function), ("seek64",Sseek64_function), ("reserved",intptr_t*2)] # IOENC ENC_UNKNOWN,ENC_OCTET,ENC_ASCII,ENC_ISO_LATIN_1,ENC_ANSI,ENC_UTF8,ENC_UNICODE_BE,ENC_UNICODE_LE,ENC_WCHAR = range(9) IOENC = c_int # IOPOS class IOPOS(Structure): _fields_ = [("byteno",c_int64), ("charno",c_int64), ("lineno",c_int), ("linepos",c_int), ("reserved", intptr_t*2)] # IOSTREAM class IOSTREAM(Structure): _fields_ = [("bufp",c_char_p), ("limitp",c_char_p), ("buffer",c_char_p), ("unbuffer",c_char_p), ("lastc",c_int), ("magic",c_int), ("bufsize",c_int), ("flags",c_int), ("posbuf",IOPOS), ("position",POINTER(IOPOS)), ("handle",c_void_p), ("functions",IOFUNCTIONS), ("locks",c_int), ("mutex",IOLOCK), ("closure_hook",CFUNCTYPE(None, c_void_p)), ("closure",c_void_p), ("timeout",c_int), ("message",c_char_p), ("encoding",IOENC)] IOSTREAM._fields_.extend([("tee",IOSTREAM), ("mbstate",POINTER(mbstate_t)), ("reserved",intptr_t*6)]) #PL_EXPORT(IOSTREAM *) Sopen_string(IOSTREAM *s, char *buf, size_t sz, const char *m); Sopen_string = _lib.Sopen_string Sopen_string.argtypes = [POINTER(IOSTREAM), c_char_p, c_size_t, c_char_p] Sopen_string.restype = POINTER(IOSTREAM) #PL_EXPORT(int) Sclose(IOSTREAM *s); Sclose = _lib.Sclose Sclose.argtypes = [POINTER(IOSTREAM)] #PL_EXPORT(int) PL_unify_stream(term_t t, IOSTREAM *s); PL_unify_stream = _lib.PL_unify_stream PL_unify_stream.argtypes = [term_t, POINTER(IOSTREAM)]