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if_python.c
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if_python.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.
*/
#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
#ifdef HAVE_STDARG_H
# undef HAVE_STDARG_H /* Python's config.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 */
#if !defined(FEAT_PYTHON) && defined(PROTO)
/* Use this to be able to generate prototypes without python being used. */
# define PyObject int
# define PyThreadState int
# define PyTypeObject int
struct PyMethodDef { int a; };
# define PySequenceMethods int
#endif
/* Parser flags */
#define single_input 256
#define file_input 257
#define eval_input 258
#if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x020300F0
/* Python 2.3: can invoke ":python" recursively. */
# define PY_CAN_RECURSE
#endif
#if defined(DYNAMIC_PYTHON) || defined(PROTO)
# ifndef DYNAMIC_PYTHON
# define HINSTANCE int /* for generating prototypes */
# endif
/*
* Wrapper defines
*/
# define PyArg_Parse dll_PyArg_Parse
# define PyArg_ParseTuple dll_PyArg_ParseTuple
# define PyDict_SetItemString dll_PyDict_SetItemString
# define PyErr_BadArgument dll_PyErr_BadArgument
# define PyErr_Clear dll_PyErr_Clear
# define PyErr_NoMemory dll_PyErr_NoMemory
# define PyErr_Occurred dll_PyErr_Occurred
# define PyErr_SetNone dll_PyErr_SetNone
# define PyErr_SetString dll_PyErr_SetString
# define PyEval_InitThreads dll_PyEval_InitThreads
# define PyEval_RestoreThread dll_PyEval_RestoreThread
# define PyEval_SaveThread dll_PyEval_SaveThread
# ifdef PY_CAN_RECURSE
# define PyGILState_Ensure dll_PyGILState_Ensure
# define PyGILState_Release dll_PyGILState_Release
# endif
# define PyInt_AsLong dll_PyInt_AsLong
# define PyInt_FromLong dll_PyInt_FromLong
# define PyInt_Type (*dll_PyInt_Type)
# define PyList_GetItem dll_PyList_GetItem
# define PyList_Append dll_PyList_Append
# define PyList_New dll_PyList_New
# define PyList_SetItem dll_PyList_SetItem
# define PyList_Size dll_PyList_Size
# define PyList_Type (*dll_PyList_Type)
# define PyImport_ImportModule dll_PyImport_ImportModule
# define PyDict_New dll_PyDict_New
# define PyDict_GetItemString dll_PyDict_GetItemString
# define PyModule_GetDict dll_PyModule_GetDict
# define PyRun_SimpleString dll_PyRun_SimpleString
# define PyString_AsString dll_PyString_AsString
# define PyString_FromString dll_PyString_FromString
# define PyString_FromStringAndSize dll_PyString_FromStringAndSize
# define PyString_Size dll_PyString_Size
# define PyString_Type (*dll_PyString_Type)
# define PySys_SetObject dll_PySys_SetObject
# define PySys_SetArgv dll_PySys_SetArgv
# define PyType_Type (*dll_PyType_Type)
# define Py_BuildValue dll_Py_BuildValue
# define Py_FindMethod dll_Py_FindMethod
# define Py_InitModule4 dll_Py_InitModule4
# define Py_Initialize dll_Py_Initialize
# define Py_Finalize dll_Py_Finalize
# define Py_IsInitialized dll_Py_IsInitialized
# define _PyObject_New dll__PyObject_New
# define _Py_NoneStruct (*dll__Py_NoneStruct)
# define PyObject_Init dll__PyObject_Init
# if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02020000
# define PyType_IsSubtype dll_PyType_IsSubtype
# endif
# if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02030000
# define PyObject_Malloc dll_PyObject_Malloc
# define PyObject_Free dll_PyObject_Free
# endif
/*
* Pointers for dynamic link
*/
static int(*dll_PyArg_Parse)(PyObject *, char *, ...);
static int(*dll_PyArg_ParseTuple)(PyObject *, char *, ...);
static int(*dll_PyDict_SetItemString)(PyObject *dp, char *key, PyObject *item);
static int(*dll_PyErr_BadArgument)(void);
static void(*dll_PyErr_Clear)(void);
static PyObject*(*dll_PyErr_NoMemory)(void);
static PyObject*(*dll_PyErr_Occurred)(void);
static void(*dll_PyErr_SetNone)(PyObject *);
static void(*dll_PyErr_SetString)(PyObject *, const char *);
static void(*dll_PyEval_InitThreads)(void);
static void(*dll_PyEval_RestoreThread)(PyThreadState *);
static PyThreadState*(*dll_PyEval_SaveThread)(void);
# ifdef PY_CAN_RECURSE
static PyGILState_STATE (*dll_PyGILState_Ensure)(void);
static void (*dll_PyGILState_Release)(PyGILState_STATE);
#endif
static long(*dll_PyInt_AsLong)(PyObject *);
static PyObject*(*dll_PyInt_FromLong)(long);
static PyTypeObject* dll_PyInt_Type;
static PyObject*(*dll_PyList_GetItem)(PyObject *, int);
static PyObject*(*dll_PyList_Append)(PyObject *, PyObject *);
static PyObject*(*dll_PyList_New)(int size);
static int(*dll_PyList_SetItem)(PyObject *, int, PyObject *);
static int(*dll_PyList_Size)(PyObject *);
static PyTypeObject* dll_PyList_Type;
static PyObject*(*dll_PyImport_ImportModule)(const char *);
static PyObject*(*dll_PyDict_New)(void);
static PyObject*(*dll_PyDict_GetItemString)(PyObject *, const char *);
static PyObject*(*dll_PyModule_GetDict)(PyObject *);
static int(*dll_PyRun_SimpleString)(char *);
static char*(*dll_PyString_AsString)(PyObject *);
static PyObject*(*dll_PyString_FromString)(const char *);
static PyObject*(*dll_PyString_FromStringAndSize)(const char *, int);
static int(*dll_PyString_Size)(PyObject *);
static PyTypeObject* dll_PyString_Type;
static int(*dll_PySys_SetObject)(char *, PyObject *);
static int(*dll_PySys_SetArgv)(int, char **);
static PyTypeObject* dll_PyType_Type;
static PyObject*(*dll_Py_BuildValue)(char *, ...);
static PyObject*(*dll_Py_FindMethod)(struct PyMethodDef[], PyObject *, char *);
static PyObject*(*dll_Py_InitModule4)(char *, struct PyMethodDef *, char *, PyObject *, int);
static void(*dll_Py_Initialize)(void);
static void(*dll_Py_Finalize)(void);
static int(*dll_Py_IsInitialized)(void);
static PyObject*(*dll__PyObject_New)(PyTypeObject *, PyObject *);
static PyObject*(*dll__PyObject_Init)(PyObject *, PyTypeObject *);
static PyObject* dll__Py_NoneStruct;
# if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02020000
static int (*dll_PyType_IsSubtype)(PyTypeObject *, PyTypeObject *);
# endif
# if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02030000
static void* (*dll_PyObject_Malloc)(size_t);
static void (*dll_PyObject_Free)(void*);
# endif
static HINSTANCE hinstPython = 0; /* Instance of python.dll */
/* Imported exception objects */
static PyObject *imp_PyExc_AttributeError;
static PyObject *imp_PyExc_IndexError;
static PyObject *imp_PyExc_KeyboardInterrupt;
static PyObject *imp_PyExc_TypeError;
static PyObject *imp_PyExc_ValueError;
# define PyExc_AttributeError imp_PyExc_AttributeError
# define PyExc_IndexError imp_PyExc_IndexError
# define PyExc_KeyboardInterrupt imp_PyExc_KeyboardInterrupt
# define PyExc_TypeError imp_PyExc_TypeError
# define PyExc_ValueError imp_PyExc_ValueError
/*
* Table of name to function pointer of python.
*/
# define PYTHON_PROC FARPROC
static struct
{
char *name;
PYTHON_PROC *ptr;
} python_funcname_table[] =
{
{"PyArg_Parse", (PYTHON_PROC*)&dll_PyArg_Parse},
{"PyArg_ParseTuple", (PYTHON_PROC*)&dll_PyArg_ParseTuple},
{"PyDict_SetItemString", (PYTHON_PROC*)&dll_PyDict_SetItemString},
{"PyErr_BadArgument", (PYTHON_PROC*)&dll_PyErr_BadArgument},
{"PyErr_Clear", (PYTHON_PROC*)&dll_PyErr_Clear},
{"PyErr_NoMemory", (PYTHON_PROC*)&dll_PyErr_NoMemory},
{"PyErr_Occurred", (PYTHON_PROC*)&dll_PyErr_Occurred},
{"PyErr_SetNone", (PYTHON_PROC*)&dll_PyErr_SetNone},
{"PyErr_SetString", (PYTHON_PROC*)&dll_PyErr_SetString},
{"PyEval_InitThreads", (PYTHON_PROC*)&dll_PyEval_InitThreads},
{"PyEval_RestoreThread", (PYTHON_PROC*)&dll_PyEval_RestoreThread},
{"PyEval_SaveThread", (PYTHON_PROC*)&dll_PyEval_SaveThread},
# ifdef PY_CAN_RECURSE
{"PyGILState_Ensure", (PYTHON_PROC*)&dll_PyGILState_Ensure},
{"PyGILState_Release", (PYTHON_PROC*)&dll_PyGILState_Release},
# endif
{"PyInt_AsLong", (PYTHON_PROC*)&dll_PyInt_AsLong},
{"PyInt_FromLong", (PYTHON_PROC*)&dll_PyInt_FromLong},
{"PyInt_Type", (PYTHON_PROC*)&dll_PyInt_Type},
{"PyList_GetItem", (PYTHON_PROC*)&dll_PyList_GetItem},
{"PyList_Append", (PYTHON_PROC*)&dll_PyList_Append},
{"PyList_New", (PYTHON_PROC*)&dll_PyList_New},
{"PyList_SetItem", (PYTHON_PROC*)&dll_PyList_SetItem},
{"PyList_Size", (PYTHON_PROC*)&dll_PyList_Size},
{"PyList_Type", (PYTHON_PROC*)&dll_PyList_Type},
{"PyImport_ImportModule", (PYTHON_PROC*)&dll_PyImport_ImportModule},
{"PyDict_GetItemString", (PYTHON_PROC*)&dll_PyDict_GetItemString},
{"PyDict_New", (PYTHON_PROC*)&dll_PyDict_New},
{"PyModule_GetDict", (PYTHON_PROC*)&dll_PyModule_GetDict},
{"PyRun_SimpleString", (PYTHON_PROC*)&dll_PyRun_SimpleString},
{"PyString_AsString", (PYTHON_PROC*)&dll_PyString_AsString},
{"PyString_FromString", (PYTHON_PROC*)&dll_PyString_FromString},
{"PyString_FromStringAndSize", (PYTHON_PROC*)&dll_PyString_FromStringAndSize},
{"PyString_Size", (PYTHON_PROC*)&dll_PyString_Size},
{"PyString_Type", (PYTHON_PROC*)&dll_PyString_Type},
{"PySys_SetObject", (PYTHON_PROC*)&dll_PySys_SetObject},
{"PySys_SetArgv", (PYTHON_PROC*)&dll_PySys_SetArgv},
{"PyType_Type", (PYTHON_PROC*)&dll_PyType_Type},
{"Py_BuildValue", (PYTHON_PROC*)&dll_Py_BuildValue},
{"Py_FindMethod", (PYTHON_PROC*)&dll_Py_FindMethod},
{"Py_InitModule4", (PYTHON_PROC*)&dll_Py_InitModule4},
{"Py_Initialize", (PYTHON_PROC*)&dll_Py_Initialize},
{"Py_Finalize", (PYTHON_PROC*)&dll_Py_Finalize},
{"Py_IsInitialized", (PYTHON_PROC*)&dll_Py_IsInitialized},
{"_PyObject_New", (PYTHON_PROC*)&dll__PyObject_New},
{"PyObject_Init", (PYTHON_PROC*)&dll__PyObject_Init},
{"_Py_NoneStruct", (PYTHON_PROC*)&dll__Py_NoneStruct},
# if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02020000
{"PyType_IsSubtype", (PYTHON_PROC*)&dll_PyType_IsSubtype},
# endif
# if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02030000
{"PyObject_Malloc", (PYTHON_PROC*)&dll_PyObject_Malloc},
{"PyObject_Free", (PYTHON_PROC*)&dll_PyObject_Free},
# endif
{"", NULL},
};
/*
* Free python.dll
*/
static void
end_dynamic_python(void)
{
if (hinstPython)
{
FreeLibrary(hinstPython);
hinstPython = 0;
}
}
/*
* Load library and get all pointers.
* Parameter 'libname' provides name of DLL.
* Return OK or FAIL.
*/
static int
python_runtime_link_init(char *libname, int verbose)
{
int i;
if (hinstPython)
return OK;
hinstPython = LoadLibrary(libname);
if (!hinstPython)
{
if (verbose)
EMSG2(_(e_loadlib), libname);
return FAIL;
}
for (i = 0; python_funcname_table[i].ptr; ++i)
{
if ((*python_funcname_table[i].ptr = GetProcAddress(hinstPython,
python_funcname_table[i].name)) == NULL)
{
FreeLibrary(hinstPython);
hinstPython = 0;
if (verbose)
EMSG2(_(e_loadfunc), python_funcname_table[i].name);
return FAIL;
}
}
return OK;
}
/*
* If python is enabled (there is installed python on Windows system) return
* TRUE, else FALSE.
*/
int
python_enabled(verbose)
int verbose;
{
return python_runtime_link_init(DYNAMIC_PYTHON_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_exceptions __ARGS((void));
static void
get_exceptions()
{
PyObject *exmod = PyImport_ImportModule("exceptions");
PyObject *exdict = PyModule_GetDict(exmod);
imp_PyExc_AttributeError = PyDict_GetItemString(exdict, "AttributeError");
imp_PyExc_IndexError = PyDict_GetItemString(exdict, "IndexError");
imp_PyExc_KeyboardInterrupt = PyDict_GetItemString(exdict, "KeyboardInterrupt");
imp_PyExc_TypeError = PyDict_GetItemString(exdict, "TypeError");
imp_PyExc_ValueError = PyDict_GetItemString(exdict, "ValueError");
Py_XINCREF(imp_PyExc_AttributeError);
Py_XINCREF(imp_PyExc_IndexError);
Py_XINCREF(imp_PyExc_KeyboardInterrupt);
Py_XINCREF(imp_PyExc_TypeError);
Py_XINCREF(imp_PyExc_ValueError);
Py_XDECREF(exmod);
}
#endif /* DYNAMIC_PYTHON */
/******************************************************
* Internal function prototypes.
*/
static void DoPythonCommand(exarg_T *, const char *);
static int RangeStart;
static int RangeEnd;
static void PythonIO_Flush(void);
static int PythonIO_Init(void);
static int PythonMod_Init(void);
/* Utility functions for the vim/python interface
* ----------------------------------------------
*/
static PyObject *GetBufferLine(buf_T *, int);
static PyObject *GetBufferLineList(buf_T *, int, int);
static int SetBufferLine(buf_T *, int, PyObject *, int *);
static int SetBufferLineList(buf_T *, int, int, PyObject *, int *);
static int InsertBufferLines(buf_T *, int, PyObject *, int *);
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 initialised = 0;
#if PYTHON_API_VERSION < 1007 /* Python 1.4 */
typedef PyObject PyThreadState;
#endif
#ifdef PY_CAN_RECURSE
static PyGILState_STATE pygilstate = PyGILState_UNLOCKED;
#else
static PyThreadState *saved_python_thread = NULL;
#endif
/*
* Suspend a thread of the Python interpreter, other threads are allowed to
* run.
*/
static void
Python_SaveThread(void)
{
#ifdef PY_CAN_RECURSE
PyGILState_Release(pygilstate);
#else
saved_python_thread = PyEval_SaveThread();
#endif
}
/*
* Restore a thread of the Python interpreter, waits for other threads to
* block.
*/
static void
Python_RestoreThread(void)
{
#ifdef PY_CAN_RECURSE
pygilstate = PyGILState_Ensure();
#else
PyEval_RestoreThread(saved_python_thread);
saved_python_thread = NULL;
#endif
}
/*
* 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
python_end()
{
static int recurse = 0;
/* If a crash occurs while doing this, don't try again. */
if (recurse != 0)
return;
++recurse;
#ifdef DYNAMIC_PYTHON
if (hinstPython && Py_IsInitialized())
{
Python_RestoreThread(); /* enter python */
Py_Finalize();
}
end_dynamic_python();
#else
if (Py_IsInitialized())
{
Python_RestoreThread(); /* enter python */
Py_Finalize();
}
#endif
--recurse;
}
static int
Python_Init(void)
{
if (!initialised)
{
#ifdef DYNAMIC_PYTHON
if (!python_enabled(TRUE))
{
EMSG(_("E263: Sorry, this command is disabled, the Python library could not be loaded."));
goto fail;
}
#endif
#if !defined(MACOS) || defined(MACOS_X_UNIX)
Py_Initialize();
#else
PyMac_Initialize();
#endif
/* initialise threads */
PyEval_InitThreads();
#ifdef DYNAMIC_PYTHON
get_exceptions();
#endif
if (PythonIO_Init())
goto fail;
if (PythonMod_Init())
goto fail;
/* the first python thread is vim's, release the lock */
Python_SaveThread();
initialised = 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
DoPythonCommand(exarg_T *eap, const char *cmd)
{
#ifndef PY_CAN_RECURSE
static int recursive = 0;
#endif
#if defined(MACOS) && !defined(MACOS_X_UNIX)
GrafPtr oldPort;
#endif
#if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
char *saved_locale;
#endif
#ifndef PY_CAN_RECURSE
if (recursive)
{
EMSG(_("E659: Cannot invoke Python recursively"));
return;
}
++recursive;
#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 (Python_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
Python_RestoreThread(); /* enter python */
PyRun_SimpleString((char *)(cmd));
Python_SaveThread(); /* leave python */
#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:
#ifndef PY_CAN_RECURSE
--recursive;
#endif
return; /* keeps lint happy */
}
/*
* ":python"
*/
void
ex_python(exarg_T *eap)
{
char_u *script;
script = script_get(eap, eap->arg);
if (!eap->skip)
{
if (script == NULL)
DoPythonCommand(eap, (char *)eap->arg);
else
DoPythonCommand(eap, (char *)script);
}
vim_free(script);
}
#define BUFFER_SIZE 1024
/*
* ":pyfile"
*/
void
ex_pyfile(exarg_T *eap)
{
static char buffer[BUFFER_SIZE];
const char *file = (char *)eap->arg;
char *p;
/* 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.
*
* Put the string "execfile('file')" into buffer. But, we need to
* escape any backslashes or single quotes in the file name, so that
* Python won't mangle the file name.
*/
strcpy(buffer, "execfile('");
p = buffer + 10; /* size of "execfile('" */
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;
/* Put in the terminating "')" and a null */
*p++ = '\'';
*p++ = ')';
*p++ = '\0';
/* Execute the file */
DoPythonCommand(eap, buffer);
}
/******************************************************
* 2. Python output stream: writes output via [e]msg().
*/
/* Implementation functions
*/
static PyObject *OutputGetattr(PyObject *, char *);
static int OutputSetattr(PyObject *, char *, PyObject *);
static PyObject *OutputWrite(PyObject *, PyObject *);
static PyObject *OutputWritelines(PyObject *, PyObject *);
typedef void (*writefn)(char_u *);
static void writer(writefn fn, char_u *str, int 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 = {
PyObject_HEAD_INIT(0)
0,
"message",
sizeof(OutputObject),
0,
(destructor) 0,
(printfunc) 0,
(getattrfunc) OutputGetattr,
(setattrfunc) OutputSetattr,
(cmpfunc) 0,
(reprfunc) 0,
0, /* as number */
0, /* as sequence */
0, /* as mapping */
(hashfunc) 0,
(ternaryfunc) 0,
(reprfunc) 0
};
/*************/
static PyObject *
OutputGetattr(PyObject *self, char *name)
{
if (strcmp(name, "softspace") == 0)
return PyInt_FromLong(((OutputObject *)(self))->softspace);
return Py_FindMethod(OutputMethods, self, name);
}
static int
OutputSetattr(PyObject *self, char *name, PyObject *val)
{
if (val == NULL) {
PyErr_SetString(PyExc_AttributeError, _("can't delete OutputObject attributes"));
return -1;
}
if (strcmp(name, "softspace") == 0)
{
if (!PyInt_Check(val)) {
PyErr_SetString(PyExc_TypeError, _("softspace must be an integer"));
return -1;
}
((OutputObject *)(self))->softspace = PyInt_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)
{
int n;
int 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;
int 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 int buffer_len = 0;
static int buffer_size = 0;
static writefn old_fn = NULL;
static void
buffer_ensure(int n)
{
int 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, int 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)
{
int 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)
{
/* Fixups... */
OutputType.ob_type = &PyType_Type;
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;
}
/******************************************************
* 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;
}
WindowObject;
#define INVALID_WINDOW_VALUE ((win_T *)(-1))
#define WindowType_Check(obj) ((obj)->ob_type == &WindowType)
static PyObject *WindowNew(win_T *);
static void WindowDestructor(PyObject *);
static PyObject *WindowGetattr(PyObject *, char *);
static int WindowSetattr(PyObject *, char *, PyObject *);
static PyObject *WindowRepr(PyObject *);
/* Buffer type - Implementation functions
* --------------------------------------
*/
typedef struct
{
PyObject_HEAD
buf_T *buf;
}
BufferObject;
#define INVALID_BUFFER_VALUE ((buf_T *)(-1))
#define BufferType_Check(obj) ((obj)->ob_type == &BufferType)
static PyObject *BufferNew (buf_T *);
static void BufferDestructor(PyObject *);
static PyObject *BufferGetattr(PyObject *, char *);
static PyObject *BufferRepr(PyObject *);
static int BufferLength(PyObject *);
static PyObject *BufferItem(PyObject *, int);
static PyObject *BufferSlice(PyObject *, int, int);
static int BufferAssItem(PyObject *, int, PyObject *);
static int BufferAssSlice(PyObject *, int, int, PyObject *);
static PyObject *BufferAppend(PyObject *, PyObject *);
static PyObject *BufferMark(PyObject *, PyObject *);
static PyObject *BufferRange(PyObject *, PyObject *);
/* Line range type - Implementation functions
* --------------------------------------