/
if_python3.c
2781 lines (2319 loc) · 69.5 KB
/
if_python3.c
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/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* Python extensions by Paul Moore.
* Changes for Unix by David Leonard.
*
* This consists of four parts:
* 1. Python interpreter main program
* 2. Python output stream: writes output via [e]msg().
* 3. Implementation of the Vim module for Python
* 4. Utility functions for handling the interface between Vim and Python.
*/
/*
* Roland Puntaier 2009/sept/16:
* Adaptations to support both python3.x and python2.x
*/
// uncomment this if used with the debug version of python
// #define Py_DEBUG
#include "vim.h"
#include <limits.h>
/* Python.h defines _POSIX_THREADS itself (if needed) */
#ifdef _POSIX_THREADS
# undef _POSIX_THREADS
#endif
#if defined(_WIN32) && defined (HAVE_FCNTL_H)
# undef HAVE_FCNTL_H
#endif
#ifdef _DEBUG
# undef _DEBUG
#endif
#define PY_SSIZE_T_CLEAN
#ifdef F_BLANK
# undef F_BLANK
#endif
#ifdef HAVE_STDARG_H
# undef HAVE_STDARG_H /* Python's config.h defines it as well. */
#endif
#ifdef _POSIX_C_SOURCE /* defined in feature.h */
# undef _POSIX_C_SOURCE
#endif
#ifdef _XOPEN_SOURCE
# undef _XOPEN_SOURCE /* pyconfig.h defines it as well. */
#endif
#include <Python.h>
#if defined(MACOS) && !defined(MACOS_X_UNIX)
# include "macglue.h"
# include <CodeFragments.h>
#endif
#undef main /* Defined in python.h - aargh */
#undef HAVE_FCNTL_H /* Clash with os_win32.h */
static void init_structs(void);
#if defined(DYNAMIC_PYTHON3)
#ifndef WIN3264
#include <dlfcn.h>
#define FARPROC void*
#define HINSTANCE void*
#define load_dll(n) dlopen((n), RTLD_LAZY|RTLD_GLOBAL)
#define close_dll dlclose
#define symbol_from_dll dlsym
#else
#define load_dll LoadLibrary
#define close_dll FreeLibrary
#define symbol_from_dll GetProcAddress
#endif
/*
* Wrapper defines
*/
#undef PyArg_Parse
# define PyArg_Parse py3_PyArg_Parse
#undef PyArg_ParseTuple
# define PyArg_ParseTuple py3_PyArg_ParseTuple
# define PyDict_SetItemString py3_PyDict_SetItemString
# define PyErr_BadArgument py3_PyErr_BadArgument
# define PyErr_Clear py3_PyErr_Clear
# define PyErr_NoMemory py3_PyErr_NoMemory
# define PyErr_Occurred py3_PyErr_Occurred
# define PyErr_SetNone py3_PyErr_SetNone
# define PyErr_SetString py3_PyErr_SetString
# define PyEval_InitThreads py3_PyEval_InitThreads
# define PyEval_RestoreThread py3_PyEval_RestoreThread
# define PyEval_SaveThread py3_PyEval_SaveThread
# define PyGILState_Ensure py3_PyGILState_Ensure
# define PyGILState_Release py3_PyGILState_Release
# define PyLong_AsLong py3_PyLong_AsLong
# define PyLong_FromLong py3_PyLong_FromLong
# define PyList_GetItem py3_PyList_GetItem
# define PyList_Append py3_PyList_Append
# define PyList_New py3_PyList_New
# define PyList_SetItem py3_PyList_SetItem
# define PyList_Size py3_PyList_Size
# define PySlice_GetIndicesEx py3_PySlice_GetIndicesEx
# define PyImport_ImportModule py3_PyImport_ImportModule
# define PyObject_Init py3__PyObject_Init
# define PyDict_New py3_PyDict_New
# define PyDict_GetItemString py3_PyDict_GetItemString
# define PyModule_GetDict py3_PyModule_GetDict
#undef PyRun_SimpleString
# define PyRun_SimpleString py3_PyRun_SimpleString
# define PySys_SetObject py3_PySys_SetObject
# define PySys_SetArgv py3_PySys_SetArgv
# define PyType_Type (*py3_PyType_Type)
# define PyType_Ready py3_PyType_Ready
#undef Py_BuildValue
# define Py_BuildValue py3_Py_BuildValue
# define Py_Initialize py3_Py_Initialize
# define Py_Finalize py3_Py_Finalize
# define Py_IsInitialized py3_Py_IsInitialized
# define _Py_NoneStruct (*py3__Py_NoneStruct)
# define PyModule_AddObject py3_PyModule_AddObject
# define PyImport_AppendInittab py3_PyImport_AppendInittab
# define _PyUnicode_AsString py3__PyUnicode_AsString
# define PyObject_GenericGetAttr py3_PyObject_GenericGetAttr
# define PySlice_Type (*py3_PySlice_Type)
#ifdef Py_DEBUG
# define _Py_NegativeRefcount py3__Py_NegativeRefcount
# define _Py_RefTotal (*py3__Py_RefTotal)
# define _Py_Dealloc py3__Py_Dealloc
# define _PyObject_DebugMalloc py3__PyObject_DebugMalloc
# define _PyObject_DebugFree py3__PyObject_DebugFree
#else
# define PyObject_Malloc py3_PyObject_Malloc
# define PyObject_Free py3_PyObject_Free
#endif
# define PyType_GenericAlloc py3_PyType_GenericAlloc
# define PyType_GenericNew py3_PyType_GenericNew
# define PyModule_Create2 py3_PyModule_Create2
#undef PyUnicode_FromString
# define PyUnicode_FromString py3_PyUnicode_FromString
#undef PyUnicode_FromStringAndSize
# define PyUnicode_FromStringAndSize py3_PyUnicode_FromStringAndSize
#ifdef Py_DEBUG
#undef PyObject_NEW
#define PyObject_NEW(type, typeobj) \
( (type *) PyObject_Init( \
(PyObject *) _PyObject_DebugMalloc( _PyObject_SIZE(typeobj) ), (typeobj)) )
#endif
/*
* Pointers for dynamic link
*/
static int (*py3_PySys_SetArgv)(int, wchar_t **);
static void (*py3_Py_Initialize)(void);
static PyObject* (*py3_PyList_New)(Py_ssize_t size);
static PyGILState_STATE (*py3_PyGILState_Ensure)(void);
static void (*py3_PyGILState_Release)(PyGILState_STATE);
static int (*py3_PySys_SetObject)(char *, PyObject *);
static PyObject* (*py3_PyList_Append)(PyObject *, PyObject *);
static Py_ssize_t (*py3_PyList_Size)(PyObject *);
static int (*py3_PySlice_GetIndicesEx)(PySliceObject *r, Py_ssize_t length,
Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step, Py_ssize_t *slicelength);
static PyObject* (*py3_PyErr_NoMemory)(void);
static void (*py3_Py_Finalize)(void);
static void (*py3_PyErr_SetString)(PyObject *, const char *);
static int (*py3_PyRun_SimpleString)(char *);
static PyObject* (*py3_PyList_GetItem)(PyObject *, Py_ssize_t);
static PyObject* (*py3_PyImport_ImportModule)(const char *);
static int (*py3_PyErr_BadArgument)(void);
static PyTypeObject* py3_PyType_Type;
static PyObject* (*py3_PyErr_Occurred)(void);
static PyObject* (*py3_PyModule_GetDict)(PyObject *);
static int (*py3_PyList_SetItem)(PyObject *, Py_ssize_t, PyObject *);
static PyObject* (*py3_PyDict_GetItemString)(PyObject *, const char *);
static PyObject* (*py3_PyLong_FromLong)(long);
static PyObject* (*py3_PyDict_New)(void);
static PyObject* (*py3_Py_BuildValue)(char *, ...);
static int (*py3_PyType_Ready)(PyTypeObject *type);
static int (*py3_PyDict_SetItemString)(PyObject *dp, char *key, PyObject *item);
static PyObject* (*py3_PyUnicode_FromString)(const char *u);
static PyObject* (*py3_PyUnicode_FromStringAndSize)(const char *u, Py_ssize_t size);
static long (*py3_PyLong_AsLong)(PyObject *);
static void (*py3_PyErr_SetNone)(PyObject *);
static void (*py3_PyEval_InitThreads)(void);
static void(*py3_PyEval_RestoreThread)(PyThreadState *);
static PyThreadState*(*py3_PyEval_SaveThread)(void);
static int (*py3_PyArg_Parse)(PyObject *, char *, ...);
static int (*py3_PyArg_ParseTuple)(PyObject *, char *, ...);
static int (*py3_Py_IsInitialized)(void);
static void (*py3_PyErr_Clear)(void);
static PyObject*(*py3__PyObject_Init)(PyObject *, PyTypeObject *);
static PyObject* py3__Py_NoneStruct;
static int (*py3_PyModule_AddObject)(PyObject *m, const char *name, PyObject *o);
static int (*py3_PyImport_AppendInittab)(const char *name, PyObject* (*initfunc)(void));
static char* (*py3__PyUnicode_AsString)(PyObject *unicode);
static PyObject* (*py3_PyObject_GenericGetAttr)(PyObject *obj, PyObject *name);
static PyObject* (*py3_PyModule_Create2)(struct PyModuleDef* module, int module_api_version);
static PyObject* (*py3_PyType_GenericAlloc)(PyTypeObject *type, Py_ssize_t nitems);
static PyObject* (*py3_PyType_GenericNew)(PyTypeObject *type, PyObject *args, PyObject *kwds);
static PyTypeObject* py3_PySlice_Type;
#ifdef Py_DEBUG
static void (*py3__Py_NegativeRefcount)(const char *fname, int lineno, PyObject *op);
static Py_ssize_t* py3__Py_RefTotal;
static void (*py3__Py_Dealloc)(PyObject *obj);
static void (*py3__PyObject_DebugFree)(void*);
static void* (*py3__PyObject_DebugMalloc)(size_t);
#else
static void (*py3_PyObject_Free)(void*);
static void* (*py3_PyObject_Malloc)(size_t);
#endif
static HINSTANCE hinstPy3 = 0; /* Instance of python.dll */
/* Imported exception objects */
static PyObject *p3imp_PyExc_AttributeError;
static PyObject *p3imp_PyExc_IndexError;
static PyObject *p3imp_PyExc_KeyboardInterrupt;
static PyObject *p3imp_PyExc_TypeError;
static PyObject *p3imp_PyExc_ValueError;
# define PyExc_AttributeError p3imp_PyExc_AttributeError
# define PyExc_IndexError p3imp_PyExc_IndexError
# define PyExc_KeyboardInterrupt p3imp_PyExc_KeyboardInterrupt
# define PyExc_TypeError p3imp_PyExc_TypeError
# define PyExc_ValueError p3imp_PyExc_ValueError
/*
* Table of name to function pointer of python.
*/
# define PYTHON_PROC FARPROC
static struct
{
char *name;
PYTHON_PROC *ptr;
} py3_funcname_table[] =
{
{"PySys_SetArgv", (PYTHON_PROC*)&py3_PySys_SetArgv},
{"Py_Initialize", (PYTHON_PROC*)&py3_Py_Initialize},
{"PyArg_ParseTuple", (PYTHON_PROC*)&py3_PyArg_ParseTuple},
{"PyList_New", (PYTHON_PROC*)&py3_PyList_New},
{"PyGILState_Ensure", (PYTHON_PROC*)&py3_PyGILState_Ensure},
{"PyGILState_Release", (PYTHON_PROC*)&py3_PyGILState_Release},
{"PySys_SetObject", (PYTHON_PROC*)&py3_PySys_SetObject},
{"PyList_Append", (PYTHON_PROC*)&py3_PyList_Append},
{"PyList_Size", (PYTHON_PROC*)&py3_PyList_Size},
{"PySlice_GetIndicesEx", (PYTHON_PROC*)&py3_PySlice_GetIndicesEx},
{"PyErr_NoMemory", (PYTHON_PROC*)&py3_PyErr_NoMemory},
{"Py_Finalize", (PYTHON_PROC*)&py3_Py_Finalize},
{"PyErr_SetString", (PYTHON_PROC*)&py3_PyErr_SetString},
{"PyRun_SimpleString", (PYTHON_PROC*)&py3_PyRun_SimpleString},
{"PyList_GetItem", (PYTHON_PROC*)&py3_PyList_GetItem},
{"PyImport_ImportModule", (PYTHON_PROC*)&py3_PyImport_ImportModule},
{"PyErr_BadArgument", (PYTHON_PROC*)&py3_PyErr_BadArgument},
{"PyType_Type", (PYTHON_PROC*)&py3_PyType_Type},
{"PyErr_Occurred", (PYTHON_PROC*)&py3_PyErr_Occurred},
{"PyModule_GetDict", (PYTHON_PROC*)&py3_PyModule_GetDict},
{"PyList_SetItem", (PYTHON_PROC*)&py3_PyList_SetItem},
{"PyDict_GetItemString", (PYTHON_PROC*)&py3_PyDict_GetItemString},
{"PyLong_FromLong", (PYTHON_PROC*)&py3_PyLong_FromLong},
{"PyDict_New", (PYTHON_PROC*)&py3_PyDict_New},
{"Py_BuildValue", (PYTHON_PROC*)&py3_Py_BuildValue},
{"PyType_Ready", (PYTHON_PROC*)&py3_PyType_Ready},
{"PyDict_SetItemString", (PYTHON_PROC*)&py3_PyDict_SetItemString},
{"PyLong_AsLong", (PYTHON_PROC*)&py3_PyLong_AsLong},
{"PyErr_SetNone", (PYTHON_PROC*)&py3_PyErr_SetNone},
{"PyEval_InitThreads", (PYTHON_PROC*)&py3_PyEval_InitThreads},
{"PyEval_RestoreThread", (PYTHON_PROC*)&py3_PyEval_RestoreThread},
{"PyEval_SaveThread", (PYTHON_PROC*)&py3_PyEval_SaveThread},
{"PyArg_Parse", (PYTHON_PROC*)&py3_PyArg_Parse},
{"PyArg_ParseTuple", (PYTHON_PROC*)&py3_PyArg_ParseTuple},
{"Py_IsInitialized", (PYTHON_PROC*)&py3_Py_IsInitialized},
{"_Py_NoneStruct", (PYTHON_PROC*)&py3__Py_NoneStruct},
{"PyErr_Clear", (PYTHON_PROC*)&py3_PyErr_Clear},
{"PyObject_Init", (PYTHON_PROC*)&py3__PyObject_Init},
{"PyModule_AddObject", (PYTHON_PROC*)&py3_PyModule_AddObject},
{"PyImport_AppendInittab", (PYTHON_PROC*)&py3_PyImport_AppendInittab},
{"_PyUnicode_AsString", (PYTHON_PROC*)&py3__PyUnicode_AsString},
{"PyObject_GenericGetAttr", (PYTHON_PROC*)&py3_PyObject_GenericGetAttr},
{"PyModule_Create2", (PYTHON_PROC*)&py3_PyModule_Create2},
{"PyType_GenericAlloc", (PYTHON_PROC*)&py3_PyType_GenericAlloc},
{"PyType_GenericNew", (PYTHON_PROC*)&py3_PyType_GenericNew},
{"PySlice_Type", (PYTHON_PROC*)&py3_PySlice_Type},
#ifdef Py_DEBUG
{"_Py_NegativeRefcount", (PYTHON_PROC*)&py3__Py_NegativeRefcount},
{"_Py_RefTotal", (PYTHON_PROC*)&py3__Py_RefTotal},
{"_Py_Dealloc", (PYTHON_PROC*)&py3__Py_Dealloc},
{"_PyObject_DebugFree", (PYTHON_PROC*)&py3__PyObject_DebugFree},
{"_PyObject_DebugMalloc", (PYTHON_PROC*)&py3__PyObject_DebugMalloc},
#else
{"PyObject_Malloc", (PYTHON_PROC*)&py3_PyObject_Malloc},
{"PyObject_Free", (PYTHON_PROC*)&py3_PyObject_Free},
#endif
{"", NULL},
};
/*
* Free python.dll
*/
static void end_dynamic_python3(void)
{
if (hinstPy3 != 0)
{
close_dll(hinstPy3);
hinstPy3 = 0;
}
}
/*
* Load library and get all pointers.
* Parameter 'libname' provides name of DLL.
* Return OK or FAIL.
*/
static int py3_runtime_link_init(char *libname, int verbose)
{
int i;
void *ucs_from_string, *ucs_from_string_and_size;
#if defined(UNIX) && defined(FEAT_PYTHON)
/* Can't have Python and Python3 loaded at the same time, it may cause a
* crash. */
if (python_loaded())
{
EMSG(_("E999: Python: Cannot use :py and :py3 in one session"));
return FAIL;
}
#endif
if (hinstPy3 != 0)
return OK;
hinstPy3 = load_dll(libname);
if (!hinstPy3)
{
if (verbose)
EMSG2(_(e_loadlib), libname);
return FAIL;
}
for (i = 0; py3_funcname_table[i].ptr; ++i)
{
if ((*py3_funcname_table[i].ptr = symbol_from_dll(hinstPy3,
py3_funcname_table[i].name)) == NULL)
{
close_dll(hinstPy3);
hinstPy3 = 0;
if (verbose)
EMSG2(_(e_loadfunc), py3_funcname_table[i].name);
return FAIL;
}
}
/* Load unicode functions separately as only the ucs2 or the ucs4 functions
* will be present in the library. */
ucs_from_string = symbol_from_dll(hinstPy3, "PyUnicodeUCS2_FromString");
ucs_from_string_and_size = symbol_from_dll(hinstPy3,
"PyUnicodeUCS2_FromStringAndSize");
if (!ucs_from_string || !ucs_from_string_and_size)
{
ucs_from_string = symbol_from_dll(hinstPy3,
"PyUnicodeUCS4_FromString");
ucs_from_string_and_size = symbol_from_dll(hinstPy3,
"PyUnicodeUCS4_FromStringAndSize");
}
if (ucs_from_string && ucs_from_string_and_size)
{
py3_PyUnicode_FromString = ucs_from_string;
py3_PyUnicode_FromStringAndSize = ucs_from_string_and_size;
}
else
{
close_dll(hinstPy3);
hinstPy3 = 0;
if (verbose)
EMSG2(_(e_loadfunc), "PyUnicode_UCSX_*");
return FAIL;
}
return OK;
}
/*
* If python is enabled (there is installed python on Windows system) return
* TRUE, else FALSE.
*/
int python3_enabled(int verbose)
{
return py3_runtime_link_init(DYNAMIC_PYTHON3_DLL, verbose) == OK;
}
/* Load the standard Python exceptions - don't import the symbols from the
* DLL, as this can cause errors (importing data symbols is not reliable).
*/
static void get_py3_exceptions __ARGS((void));
static void get_py3_exceptions()
{
PyObject *exmod = PyImport_ImportModule("builtins");
PyObject *exdict = PyModule_GetDict(exmod);
p3imp_PyExc_AttributeError = PyDict_GetItemString(exdict, "AttributeError");
p3imp_PyExc_IndexError = PyDict_GetItemString(exdict, "IndexError");
p3imp_PyExc_KeyboardInterrupt = PyDict_GetItemString(exdict, "KeyboardInterrupt");
p3imp_PyExc_TypeError = PyDict_GetItemString(exdict, "TypeError");
p3imp_PyExc_ValueError = PyDict_GetItemString(exdict, "ValueError");
Py_XINCREF(p3imp_PyExc_AttributeError);
Py_XINCREF(p3imp_PyExc_IndexError);
Py_XINCREF(p3imp_PyExc_KeyboardInterrupt);
Py_XINCREF(p3imp_PyExc_TypeError);
Py_XINCREF(p3imp_PyExc_ValueError);
Py_XDECREF(exmod);
}
#endif /* DYNAMIC_PYTHON3 */
static void call_PyObject_Free(void *p)
{
#ifdef Py_DEBUG
_PyObject_DebugFree(p);
#else
PyObject_Free(p);
#endif
}
static PyObject* call_PyType_GenericNew(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
return PyType_GenericNew(type,args,kwds);
}
static PyObject* call_PyType_GenericAlloc(PyTypeObject *type, Py_ssize_t nitems)
{
return PyType_GenericAlloc(type,nitems);
}
/******************************************************
* Internal function prototypes.
*/
static void DoPy3Command(exarg_T *, const char *);
static Py_ssize_t RangeStart;
static Py_ssize_t RangeEnd;
static void PythonIO_Flush(void);
static int PythonIO_Init(void);
static void PythonIO_Fini(void);
PyMODINIT_FUNC Py3Init_vim(void);
/* Utility functions for the vim/python interface
* ----------------------------------------------
*/
static PyObject *GetBufferLine(buf_T *, Py_ssize_t);
static int SetBufferLine(buf_T *, Py_ssize_t, PyObject *, Py_ssize_t*);
static int InsertBufferLines(buf_T *, Py_ssize_t, PyObject *, Py_ssize_t*);
static PyObject *GetBufferLineList(buf_T *buf, Py_ssize_t lo, Py_ssize_t hi);
static PyObject *LineToString(const char *);
static char *StringToLine(PyObject *);
static int VimErrorCheck(void);
#define PyErr_SetVim(str) PyErr_SetString(VimError, str)
/******************************************************
* 1. Python interpreter main program.
*/
static int py3initialised = 0;
static PyGILState_STATE pygilstate = PyGILState_UNLOCKED;
/*
* obtain a lock on the Vim data structures
*/
static void Python_Lock_Vim(void)
{
}
/*
* release a lock on the Vim data structures
*/
static void Python_Release_Vim(void)
{
}
void python3_end()
{
static int recurse = 0;
/* If a crash occurs while doing this, don't try again. */
if (recurse != 0)
return;
++recurse;
#ifdef DYNAMIC_PYTHON3
if (hinstPy3)
#endif
if (Py_IsInitialized())
{
// acquire lock before finalizing
pygilstate = PyGILState_Ensure();
PythonIO_Fini();
Py_Finalize();
}
#ifdef DYNAMIC_PYTHON3
end_dynamic_python3();
#endif
--recurse;
}
#if (defined(DYNAMIC_PYTHON) && defined(FEAT_PYTHON)) || defined(PROTO)
int
python3_loaded()
{
return (hinstPy3 != 0);
}
#endif
static int Python3_Init(void)
{
if (!py3initialised)
{
#ifdef DYNAMIC_PYTHON3
if (!python3_enabled(TRUE))
{
EMSG(_("E263: Sorry, this command is disabled, the Python library could not be loaded."));
goto fail;
}
#endif
init_structs();
/* initialise threads */
PyEval_InitThreads();
#if !defined(MACOS) || defined(MACOS_X_UNIX)
Py_Initialize();
#else
PyMac_Initialize();
#endif
#ifdef DYNAMIC_PYTHON3
get_py3_exceptions();
#endif
if (PythonIO_Init())
goto fail;
PyImport_AppendInittab("vim", Py3Init_vim);
/* Remove the element from sys.path that was added because of our
* argv[0] value in Py3Init_vim(). Previously we used an empty
* string, but dependinding on the OS we then get an empty entry or
* the current directory in sys.path. */
PyRun_SimpleString("import sys; sys.path = list(filter(lambda x: x != '/must>not&exist', sys.path))");
// lock is created and acquired in PyEval_InitThreads() and thread
// state is created in Py_Initialize()
// there _PyGILState_NoteThreadState() also sets gilcounter to 1
// (python must have threads enabled!)
// so the following does both: unlock GIL and save thread state in TLS
// without deleting thread state
PyGILState_Release(pygilstate);
py3initialised = 1;
}
return 0;
fail:
/* We call PythonIO_Flush() here to print any Python errors.
* This is OK, as it is possible to call this function even
* if PythonIO_Init() has not completed successfully (it will
* not do anything in this case).
*/
PythonIO_Flush();
return -1;
}
/*
* External interface
*/
static void DoPy3Command(exarg_T *eap, const char *cmd)
{
#if defined(MACOS) && !defined(MACOS_X_UNIX)
GrafPtr oldPort;
#endif
#if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
char *saved_locale;
#endif
#if defined(MACOS) && !defined(MACOS_X_UNIX)
GetPort(&oldPort);
/* Check if the Python library is available */
if ((Ptr)PyMac_Initialize == (Ptr)kUnresolvedCFragSymbolAddress)
goto theend;
#endif
if (Python3_Init())
goto theend;
RangeStart = eap->line1;
RangeEnd = eap->line2;
Python_Release_Vim(); /* leave vim */
#if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
/* Python only works properly when the LC_NUMERIC locale is "C". */
saved_locale = setlocale(LC_NUMERIC, NULL);
if (saved_locale == NULL || STRCMP(saved_locale, "C") == 0)
saved_locale = NULL;
else
{
/* Need to make a copy, value may change when setting new locale. */
saved_locale = (char *)vim_strsave((char_u *)saved_locale);
(void)setlocale(LC_NUMERIC, "C");
}
#endif
pygilstate = PyGILState_Ensure();
PyRun_SimpleString((char *)(cmd));
PyGILState_Release(pygilstate);
#if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
if (saved_locale != NULL)
{
(void)setlocale(LC_NUMERIC, saved_locale);
vim_free(saved_locale);
}
#endif
Python_Lock_Vim(); /* enter vim */
PythonIO_Flush();
#if defined(MACOS) && !defined(MACOS_X_UNIX)
SetPort(oldPort);
#endif
theend:
return; /* keeps lint happy */
}
/*
* ":py3"
*/
void ex_py3(exarg_T *eap)
{
char_u *script;
script = script_get(eap, eap->arg);
if (!eap->skip)
{
if (script == NULL)
DoPy3Command(eap, (char *)eap->arg);
else
DoPy3Command(eap, (char *)script);
}
vim_free(script);
}
#define BUFFER_SIZE 2048
/*
* ":py3file"
*/
void
ex_py3file(exarg_T *eap)
{
static char buffer[BUFFER_SIZE];
const char *file;
char *p;
int i;
/* Have to do it like this. PyRun_SimpleFile requires you to pass a
* stdio file pointer, but Vim and the Python DLL are compiled with
* different options under Windows, meaning that stdio pointers aren't
* compatible between the two. Yuk.
*
* construct: exec(compile(open('a_filename').read(), 'a_filename', 'exec'))
*
* We need to escape any backslashes or single quotes in the file name, so that
* Python won't mangle the file name.
*/
strcpy(buffer, "exec(compile(open('");
p = buffer + 19; /* size of "exec(compile(open('" */
for (i=0; i<2; ++i)
{
file = (char *)eap->arg;
while (*file && p < buffer + (BUFFER_SIZE - 3))
{
if (*file == '\\' || *file == '\'')
*p++ = '\\';
*p++ = *file++;
}
/* If we didn't finish the file name, we hit a buffer overflow */
if (*file != '\0')
return;
if (i==0)
{
strcpy(p,"').read(),'");
p += 11;
}
else
{
strcpy(p,"','exec'))");
p += 10;
}
}
/* Execute the file */
DoPy3Command(eap, buffer);
}
/******************************************************
* 2. Python output stream: writes output via [e]msg().
*/
/* Implementation functions
*/
static PyObject *OutputGetattro(PyObject *, PyObject *);
static int OutputSetattro(PyObject *, PyObject *, PyObject *);
static PyObject *OutputWrite(PyObject *, PyObject *);
static PyObject *OutputWritelines(PyObject *, PyObject *);
typedef void (*writefn)(char_u *);
static void writer(writefn fn, char_u *str, Py_ssize_t n);
/* Output object definition
*/
typedef struct
{
PyObject_HEAD
long softspace;
long error;
} OutputObject;
static struct PyMethodDef OutputMethods[] = {
/* name, function, calling, documentation */
{"write", OutputWrite, 1, "" },
{"writelines", OutputWritelines, 1, "" },
{ NULL, NULL, 0, NULL }
};
static PyTypeObject OutputType;
/*************/
static PyObject * OutputGetattro(PyObject *self, PyObject *nameobj)
{
char *name = "";
if (PyUnicode_Check(nameobj))
name = _PyUnicode_AsString(nameobj);
if (strcmp(name, "softspace") == 0)
return PyLong_FromLong(((OutputObject *)(self))->softspace);
return PyObject_GenericGetAttr(self, nameobj);
}
static int OutputSetattro(PyObject *self, PyObject *nameobj, PyObject *val)
{
char *name = "";
if (PyUnicode_Check(nameobj))
name = _PyUnicode_AsString(nameobj);
if (val == NULL) {
PyErr_SetString(PyExc_AttributeError, _("can't delete OutputObject attributes"));
return -1;
}
if (strcmp(name, "softspace") == 0)
{
if (!PyLong_Check(val)) {
PyErr_SetString(PyExc_TypeError, _("softspace must be an integer"));
return -1;
}
((OutputObject *)(self))->softspace = PyLong_AsLong(val);
return 0;
}
PyErr_SetString(PyExc_AttributeError, _("invalid attribute"));
return -1;
}
/*************/
static PyObject * OutputWrite(PyObject *self, PyObject *args)
{
int len;
char *str;
int error = ((OutputObject *)(self))->error;
if (!PyArg_ParseTuple(args, "s#", &str, &len))
return NULL;
Py_BEGIN_ALLOW_THREADS
Python_Lock_Vim();
writer((writefn)(error ? emsg : msg), (char_u *)str, len);
Python_Release_Vim();
Py_END_ALLOW_THREADS
Py_INCREF(Py_None);
return Py_None;
}
static PyObject * OutputWritelines(PyObject *self, PyObject *args)
{
Py_ssize_t n;
Py_ssize_t i;
PyObject *list;
int error = ((OutputObject *)(self))->error;
if (!PyArg_ParseTuple(args, "O", &list))
return NULL;
Py_INCREF(list);
if (!PyList_Check(list)) {
PyErr_SetString(PyExc_TypeError, _("writelines() requires list of strings"));
Py_DECREF(list);
return NULL;
}
n = PyList_Size(list);
for (i = 0; i < n; ++i)
{
PyObject *line = PyList_GetItem(list, i);
char *str;
Py_ssize_t len;
if (!PyArg_Parse(line, "s#", &str, &len)) {
PyErr_SetString(PyExc_TypeError, _("writelines() requires list of strings"));
Py_DECREF(list);
return NULL;
}
Py_BEGIN_ALLOW_THREADS
Python_Lock_Vim();
writer((writefn)(error ? emsg : msg), (char_u *)str, len);
Python_Release_Vim();
Py_END_ALLOW_THREADS
}
Py_DECREF(list);
Py_INCREF(Py_None);
return Py_None;
}
/* Output buffer management
*/
static char_u *buffer = NULL;
static Py_ssize_t buffer_len = 0;
static Py_ssize_t buffer_size = 0;
static writefn old_fn = NULL;
static void buffer_ensure(Py_ssize_t n)
{
Py_ssize_t new_size;
char_u *new_buffer;
if (n < buffer_size)
return;
new_size = buffer_size;
while (new_size < n)
new_size += 80;
if (new_size != buffer_size)
{
new_buffer = alloc((unsigned)new_size);
if (new_buffer == NULL)
return;
if (buffer)
{
memcpy(new_buffer, buffer, buffer_len);
vim_free(buffer);
}
buffer = new_buffer;
buffer_size = new_size;
}
}
static void PythonIO_Flush(void)
{
if (old_fn && buffer_len)
{
buffer[buffer_len] = 0;
old_fn(buffer);
}
buffer_len = 0;
}
static void writer(writefn fn, char_u *str, Py_ssize_t n)
{
char_u *ptr;
if (fn != old_fn && old_fn != NULL)
PythonIO_Flush();
old_fn = fn;
while (n > 0 && (ptr = memchr(str, '\n', n)) != NULL)
{
Py_ssize_t len = ptr - str;
buffer_ensure(buffer_len + len + 1);
memcpy(buffer + buffer_len, str, len);
buffer_len += len;
buffer[buffer_len] = 0;
fn(buffer);
str = ptr + 1;
n -= len + 1;
buffer_len = 0;
}
/* Put the remaining text into the buffer for later printing */
buffer_ensure(buffer_len + n + 1);
memcpy(buffer + buffer_len, str, n);
buffer_len += n;
}
/***************/
static OutputObject Output =
{
PyObject_HEAD_INIT(&OutputType)
0,
0
};
static OutputObject Error =
{
PyObject_HEAD_INIT(&OutputType)
0,
1
};
static int PythonIO_Init(void)
{
PyType_Ready(&OutputType);
PySys_SetObject("stdout", (PyObject *)(void *)&Output);
PySys_SetObject("stderr", (PyObject *)(void *)&Error);
if (PyErr_Occurred())
{
EMSG(_("E264: Python: Error initialising I/O objects"));
return -1;
}
return 0;
}
static void PythonIO_Fini(void)
{
PySys_SetObject("stdout", NULL);
PySys_SetObject("stderr", NULL);
}
/******************************************************
* 3. Implementation of the Vim module for Python
*/
/* Vim module - Implementation functions
* -------------------------------------
*/
static PyObject *VimError;
static PyObject *VimCommand(PyObject *, PyObject *);
static PyObject *VimEval(PyObject *, PyObject *);
/* Window type - Implementation functions
* --------------------------------------
*/
typedef struct
{
PyObject_HEAD
win_T *win;
}