?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Delay flushing send queue
[MacVim.git] / src / if_python.c
blobbaf505c594eb19e22e3febacc4189c81e40d09d6
1 /* vi:set ts=8 sts=4 sw=4:
2 *
3 * VIM - Vi IMproved by Bram Moolenaar
4 *
5 * Do ":help uganda" in Vim to read copying and usage conditions.
6 * Do ":help credits" in Vim to see a list of people who contributed.
7 * See README.txt for an overview of the Vim source code.
8 */
9 /*
10 * Python extensions by Paul Moore.
11 * Changes for Unix by David Leonard.
12 *
13 * This consists of four parts:
14 * 1. Python interpreter main program
15 * 2. Python output stream: writes output via [e]msg().
16 * 3. Implementation of the Vim module for Python
17 * 4. Utility functions for handling the interface between Vim and Python.
18 */
19
20 #include "vim.h"
21
22 #include <limits.h>
23
24 /* Python.h defines _POSIX_THREADS itself (if needed) */
25 #ifdef _POSIX_THREADS
26 # undef _POSIX_THREADS
27 #endif
28
29 #if defined(_WIN32) && defined (HAVE_FCNTL_H)
30 # undef HAVE_FCNTL_H
31 #endif
32
33 #ifdef _DEBUG
34 # undef _DEBUG
35 #endif
36
37 #ifdef HAVE_STDARG_H
38 # undef HAVE_STDARG_H /* Python's config.h defines it as well. */
39 #endif
40
41 #define PY_SSIZE_T_CLEAN
42
43 #include <Python.h>
44 #if defined(MACOS) && !defined(MACOS_X_UNIX)
45 # include "macglue.h"
46 # include <CodeFragments.h>
47 #endif
48 #undef main /* Defined in python.h - aargh */
49 #undef HAVE_FCNTL_H /* Clash with os_win32.h */
50
51 #if !defined(FEAT_PYTHON) && defined(PROTO)
52 /* Use this to be able to generate prototypes without python being used. */
53 # define PyObject Py_ssize_t
54 # define PyThreadState Py_ssize_t
55 # define PyTypeObject Py_ssize_t
56 struct PyMethodDef { Py_ssize_t a; };
57 # define PySequenceMethods Py_ssize_t
58 #endif
59
60 #if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02050000
61 # define PyInt Py_ssize_t
62 # define PyInquiry lenfunc
63 # define PyIntArgFunc ssizeargfunc
64 # define PyIntIntArgFunc ssizessizeargfunc
65 # define PyIntObjArgProc ssizeobjargproc
66 # define PyIntIntObjArgProc ssizessizeobjargproc
67 # define Py_ssize_t_fmt "n"
68 #else
69 # define PyInt int
70 # define PyInquiry inquiry
71 # define PyIntArgFunc intargfunc
72 # define PyIntIntArgFunc intintargfunc
73 # define PyIntObjArgProc intobjargproc
74 # define PyIntIntObjArgProc intintobjargproc
75 # define Py_ssize_t_fmt "i"
76 #endif
77
78 /* Parser flags */
79 #define single_input 256
80 #define file_input 257
81 #define eval_input 258
82
83 #if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x020300F0
84 /* Python 2.3: can invoke ":python" recursively. */
85 # define PY_CAN_RECURSE
86 #endif
87
88 #if defined(DYNAMIC_PYTHON) || defined(PROTO)
89 # ifndef DYNAMIC_PYTHON
90 # define HINSTANCE long_u /* for generating prototypes */
91 # endif
92
93 /* This makes if_python.c compile without warnings against Python 2.5
94 * on Win32 and Win64. */
95 #undef PyRun_SimpleString
96 #undef PyArg_Parse
97 #undef PyArg_ParseTuple
98 #undef Py_BuildValue
99 #undef Py_InitModule4
100 #undef Py_InitModule4_64
101
102 /*
103 * Wrapper defines
104 */
105 # define PyArg_Parse dll_PyArg_Parse
106 # define PyArg_ParseTuple dll_PyArg_ParseTuple
107 # define PyDict_SetItemString dll_PyDict_SetItemString
108 # define PyErr_BadArgument dll_PyErr_BadArgument
109 # define PyErr_Clear dll_PyErr_Clear
110 # define PyErr_NoMemory dll_PyErr_NoMemory
111 # define PyErr_Occurred dll_PyErr_Occurred
112 # define PyErr_SetNone dll_PyErr_SetNone
113 # define PyErr_SetString dll_PyErr_SetString
114 # define PyEval_InitThreads dll_PyEval_InitThreads
115 # define PyEval_RestoreThread dll_PyEval_RestoreThread
116 # define PyEval_SaveThread dll_PyEval_SaveThread
117 # ifdef PY_CAN_RECURSE
118 # define PyGILState_Ensure dll_PyGILState_Ensure
119 # define PyGILState_Release dll_PyGILState_Release
120 # endif
121 # define PyInt_AsLong dll_PyInt_AsLong
122 # define PyInt_FromLong dll_PyInt_FromLong
123 # define PyInt_Type (*dll_PyInt_Type)
124 # define PyList_GetItem dll_PyList_GetItem
125 # define PyList_Append dll_PyList_Append
126 # define PyList_New dll_PyList_New
127 # define PyList_SetItem dll_PyList_SetItem
128 # define PyList_Size dll_PyList_Size
129 # define PyList_Type (*dll_PyList_Type)
130 # define PyImport_ImportModule dll_PyImport_ImportModule
131 # define PyDict_New dll_PyDict_New
132 # define PyDict_GetItemString dll_PyDict_GetItemString
133 # define PyModule_GetDict dll_PyModule_GetDict
134 # define PyRun_SimpleString dll_PyRun_SimpleString
135 # define PyString_AsString dll_PyString_AsString
136 # define PyString_FromString dll_PyString_FromString
137 # define PyString_FromStringAndSize dll_PyString_FromStringAndSize
138 # define PyString_Size dll_PyString_Size
139 # define PyString_Type (*dll_PyString_Type)
140 # define PySys_SetObject dll_PySys_SetObject
141 # define PySys_SetArgv dll_PySys_SetArgv
142 # define PyType_Type (*dll_PyType_Type)
143 # define Py_BuildValue dll_Py_BuildValue
144 # define Py_FindMethod dll_Py_FindMethod
145 # define Py_InitModule4 dll_Py_InitModule4
146 # define Py_Initialize dll_Py_Initialize
147 # define Py_Finalize dll_Py_Finalize
148 # define Py_IsInitialized dll_Py_IsInitialized
149 # define _PyObject_New dll__PyObject_New
150 # define _Py_NoneStruct (*dll__Py_NoneStruct)
151 # define PyObject_Init dll__PyObject_Init
152 # if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02020000
153 # define PyType_IsSubtype dll_PyType_IsSubtype
154 # endif
155 # if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02030000
156 # define PyObject_Malloc dll_PyObject_Malloc
157 # define PyObject_Free dll_PyObject_Free
158 # endif
159
160 /*
161 * Pointers for dynamic link
162 */
163 static int(*dll_PyArg_Parse)(PyObject *, char *, ...);
164 static int(*dll_PyArg_ParseTuple)(PyObject *, char *, ...);
165 static int(*dll_PyDict_SetItemString)(PyObject *dp, char *key, PyObject *item);
166 static int(*dll_PyErr_BadArgument)(void);
167 static void(*dll_PyErr_Clear)(void);
168 static PyObject*(*dll_PyErr_NoMemory)(void);
169 static PyObject*(*dll_PyErr_Occurred)(void);
170 static void(*dll_PyErr_SetNone)(PyObject *);
171 static void(*dll_PyErr_SetString)(PyObject *, const char *);
172 static void(*dll_PyEval_InitThreads)(void);
173 static void(*dll_PyEval_RestoreThread)(PyThreadState *);
174 static PyThreadState*(*dll_PyEval_SaveThread)(void);
175 # ifdef PY_CAN_RECURSE
176 static PyGILState_STATE (*dll_PyGILState_Ensure)(void);
177 static void (*dll_PyGILState_Release)(PyGILState_STATE);
178 #endif
179 static long(*dll_PyInt_AsLong)(PyObject *);
180 static PyObject*(*dll_PyInt_FromLong)(long);
181 static PyTypeObject* dll_PyInt_Type;
182 static PyObject*(*dll_PyList_GetItem)(PyObject *, PyInt);
183 static PyObject*(*dll_PyList_Append)(PyObject *, PyObject *);
184 static PyObject*(*dll_PyList_New)(PyInt size);
185 static int(*dll_PyList_SetItem)(PyObject *, PyInt, PyObject *);
186 static PyInt(*dll_PyList_Size)(PyObject *);
187 static PyTypeObject* dll_PyList_Type;
188 static PyObject*(*dll_PyImport_ImportModule)(const char *);
189 static PyObject*(*dll_PyDict_New)(void);
190 static PyObject*(*dll_PyDict_GetItemString)(PyObject *, const char *);
191 static PyObject*(*dll_PyModule_GetDict)(PyObject *);
192 static int(*dll_PyRun_SimpleString)(char *);
193 static char*(*dll_PyString_AsString)(PyObject *);
194 static PyObject*(*dll_PyString_FromString)(const char *);
195 static PyObject*(*dll_PyString_FromStringAndSize)(const char *, PyInt);
196 static PyInt(*dll_PyString_Size)(PyObject *);
197 static PyTypeObject* dll_PyString_Type;
198 static int(*dll_PySys_SetObject)(char *, PyObject *);
199 static int(*dll_PySys_SetArgv)(int, char **);
200 static PyTypeObject* dll_PyType_Type;
201 static PyObject*(*dll_Py_BuildValue)(char *, ...);
202 static PyObject*(*dll_Py_FindMethod)(struct PyMethodDef[], PyObject *, char *);
203 static PyObject*(*dll_Py_InitModule4)(char *, struct PyMethodDef *, char *, PyObject *, int);
204 static void(*dll_Py_Initialize)(void);
205 static void(*dll_Py_Finalize)(void);
206 static int(*dll_Py_IsInitialized)(void);
207 static PyObject*(*dll__PyObject_New)(PyTypeObject *, PyObject *);
208 static PyObject*(*dll__PyObject_Init)(PyObject *, PyTypeObject *);
209 static PyObject* dll__Py_NoneStruct;
210 # if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02020000
211 static int (*dll_PyType_IsSubtype)(PyTypeObject *, PyTypeObject *);
212 # endif
213 # if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02030000
214 static void* (*dll_PyObject_Malloc)(size_t);
215 static void (*dll_PyObject_Free)(void*);
216 # endif
217
218 static HINSTANCE hinstPython = 0; /* Instance of python.dll */
219
220 /* Imported exception objects */
221 static PyObject *imp_PyExc_AttributeError;
222 static PyObject *imp_PyExc_IndexError;
223 static PyObject *imp_PyExc_KeyboardInterrupt;
224 static PyObject *imp_PyExc_TypeError;
225 static PyObject *imp_PyExc_ValueError;
226
227 # define PyExc_AttributeError imp_PyExc_AttributeError
228 # define PyExc_IndexError imp_PyExc_IndexError
229 # define PyExc_KeyboardInterrupt imp_PyExc_KeyboardInterrupt
230 # define PyExc_TypeError imp_PyExc_TypeError
231 # define PyExc_ValueError imp_PyExc_ValueError
232
233 /*
234 * Table of name to function pointer of python.
235 */
236 # define PYTHON_PROC FARPROC
237 static struct
238 {
239 char *name;
240 PYTHON_PROC *ptr;
241 } python_funcname_table[] =
242 {
243 {"PyArg_Parse", (PYTHON_PROC*)&dll_PyArg_Parse},
244 {"PyArg_ParseTuple", (PYTHON_PROC*)&dll_PyArg_ParseTuple},
245 {"PyDict_SetItemString", (PYTHON_PROC*)&dll_PyDict_SetItemString},
246 {"PyErr_BadArgument", (PYTHON_PROC*)&dll_PyErr_BadArgument},
247 {"PyErr_Clear", (PYTHON_PROC*)&dll_PyErr_Clear},
248 {"PyErr_NoMemory", (PYTHON_PROC*)&dll_PyErr_NoMemory},
249 {"PyErr_Occurred", (PYTHON_PROC*)&dll_PyErr_Occurred},
250 {"PyErr_SetNone", (PYTHON_PROC*)&dll_PyErr_SetNone},
251 {"PyErr_SetString", (PYTHON_PROC*)&dll_PyErr_SetString},
252 {"PyEval_InitThreads", (PYTHON_PROC*)&dll_PyEval_InitThreads},
253 {"PyEval_RestoreThread", (PYTHON_PROC*)&dll_PyEval_RestoreThread},
254 {"PyEval_SaveThread", (PYTHON_PROC*)&dll_PyEval_SaveThread},
255 # ifdef PY_CAN_RECURSE
256 {"PyGILState_Ensure", (PYTHON_PROC*)&dll_PyGILState_Ensure},
257 {"PyGILState_Release", (PYTHON_PROC*)&dll_PyGILState_Release},
258 # endif
259 {"PyInt_AsLong", (PYTHON_PROC*)&dll_PyInt_AsLong},
260 {"PyInt_FromLong", (PYTHON_PROC*)&dll_PyInt_FromLong},
261 {"PyInt_Type", (PYTHON_PROC*)&dll_PyInt_Type},
262 {"PyList_GetItem", (PYTHON_PROC*)&dll_PyList_GetItem},
263 {"PyList_Append", (PYTHON_PROC*)&dll_PyList_Append},
264 {"PyList_New", (PYTHON_PROC*)&dll_PyList_New},
265 {"PyList_SetItem", (PYTHON_PROC*)&dll_PyList_SetItem},
266 {"PyList_Size", (PYTHON_PROC*)&dll_PyList_Size},
267 {"PyList_Type", (PYTHON_PROC*)&dll_PyList_Type},
268 {"PyImport_ImportModule", (PYTHON_PROC*)&dll_PyImport_ImportModule},
269 {"PyDict_GetItemString", (PYTHON_PROC*)&dll_PyDict_GetItemString},
270 {"PyDict_New", (PYTHON_PROC*)&dll_PyDict_New},
271 {"PyModule_GetDict", (PYTHON_PROC*)&dll_PyModule_GetDict},
272 {"PyRun_SimpleString", (PYTHON_PROC*)&dll_PyRun_SimpleString},
273 {"PyString_AsString", (PYTHON_PROC*)&dll_PyString_AsString},
274 {"PyString_FromString", (PYTHON_PROC*)&dll_PyString_FromString},
275 {"PyString_FromStringAndSize", (PYTHON_PROC*)&dll_PyString_FromStringAndSize},
276 {"PyString_Size", (PYTHON_PROC*)&dll_PyString_Size},
277 {"PyString_Type", (PYTHON_PROC*)&dll_PyString_Type},
278 {"PySys_SetObject", (PYTHON_PROC*)&dll_PySys_SetObject},
279 {"PySys_SetArgv", (PYTHON_PROC*)&dll_PySys_SetArgv},
280 {"PyType_Type", (PYTHON_PROC*)&dll_PyType_Type},
281 {"Py_BuildValue", (PYTHON_PROC*)&dll_Py_BuildValue},
282 {"Py_FindMethod", (PYTHON_PROC*)&dll_Py_FindMethod},
283 # if (PY_VERSION_HEX >= 0x02050000) && SIZEOF_SIZE_T != SIZEOF_INT
284 {"Py_InitModule4_64", (PYTHON_PROC*)&dll_Py_InitModule4},
285 # else
286 {"Py_InitModule4", (PYTHON_PROC*)&dll_Py_InitModule4},
287 # endif
288 {"Py_Initialize", (PYTHON_PROC*)&dll_Py_Initialize},
289 {"Py_Finalize", (PYTHON_PROC*)&dll_Py_Finalize},
290 {"Py_IsInitialized", (PYTHON_PROC*)&dll_Py_IsInitialized},
291 {"_PyObject_New", (PYTHON_PROC*)&dll__PyObject_New},
292 {"PyObject_Init", (PYTHON_PROC*)&dll__PyObject_Init},
293 {"_Py_NoneStruct", (PYTHON_PROC*)&dll__Py_NoneStruct},
294 # if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02020000
295 {"PyType_IsSubtype", (PYTHON_PROC*)&dll_PyType_IsSubtype},
296 # endif
297 # if defined(PY_VERSION_HEX) && PY_VERSION_HEX >= 0x02030000
298 {"PyObject_Malloc", (PYTHON_PROC*)&dll_PyObject_Malloc},
299 {"PyObject_Free", (PYTHON_PROC*)&dll_PyObject_Free},
300 # endif
301 {"", NULL},
302 };
303
304 /*
305 * Free python.dll
306 */
307 static void
308 end_dynamic_python(void)
309 {
310 if (hinstPython)
311 {
312 FreeLibrary(hinstPython);
313 hinstPython = 0;
314 }
315 }
316
317 /*
318 * Load library and get all pointers.
319 * Parameter 'libname' provides name of DLL.
320 * Return OK or FAIL.
321 */
322 static int
323 python_runtime_link_init(char *libname, int verbose)
324 {
325 int i;
326
327 if (hinstPython)
328 return OK;
329 hinstPython = LoadLibrary(libname);
330 if (!hinstPython)
331 {
332 if (verbose)
333 EMSG2(_(e_loadlib), libname);
334 return FAIL;
335 }
336
337 for (i = 0; python_funcname_table[i].ptr; ++i)
338 {
339 if ((*python_funcname_table[i].ptr = GetProcAddress(hinstPython,
340 python_funcname_table[i].name)) == NULL)
341 {
342 FreeLibrary(hinstPython);
343 hinstPython = 0;
344 if (verbose)
345 EMSG2(_(e_loadfunc), python_funcname_table[i].name);
346 return FAIL;
347 }
348 }
349 return OK;
350 }
351
352 /*
353 * If python is enabled (there is installed python on Windows system) return
354 * TRUE, else FALSE.
355 */
356 int
357 python_enabled(int verbose)
358 {
359 return python_runtime_link_init(DYNAMIC_PYTHON_DLL, verbose) == OK;
360 }
361
362 /* Load the standard Python exceptions - don't import the symbols from the
363 * DLL, as this can cause errors (importing data symbols is not reliable).
364 */
365 static void get_exceptions __ARGS((void));
366
367 static void
368 get_exceptions()
369 {
370 PyObject *exmod = PyImport_ImportModule("exceptions");
371 PyObject *exdict = PyModule_GetDict(exmod);
372 imp_PyExc_AttributeError = PyDict_GetItemString(exdict, "AttributeError");
373 imp_PyExc_IndexError = PyDict_GetItemString(exdict, "IndexError");
374 imp_PyExc_KeyboardInterrupt = PyDict_GetItemString(exdict, "KeyboardInterrupt");
375 imp_PyExc_TypeError = PyDict_GetItemString(exdict, "TypeError");
376 imp_PyExc_ValueError = PyDict_GetItemString(exdict, "ValueError");
377 Py_XINCREF(imp_PyExc_AttributeError);
378 Py_XINCREF(imp_PyExc_IndexError);
379 Py_XINCREF(imp_PyExc_KeyboardInterrupt);
380 Py_XINCREF(imp_PyExc_TypeError);
381 Py_XINCREF(imp_PyExc_ValueError);
382 Py_XDECREF(exmod);
383 }
384 #endif /* DYNAMIC_PYTHON */
385
386 /******************************************************
387 * Internal function prototypes.
388 */
389
390 static void DoPythonCommand(exarg_T *, const char *);
391 static PyInt RangeStart;
392 static PyInt RangeEnd;
393
394 static void PythonIO_Flush(void);
395 static int PythonIO_Init(void);
396 static int PythonMod_Init(void);
397
398 /* Utility functions for the vim/python interface
399 * ----------------------------------------------
400 */
401 static PyObject *GetBufferLine(buf_T *, PyInt);
402 static PyObject *GetBufferLineList(buf_T *, PyInt, PyInt);
403
404 static int SetBufferLine(buf_T *, PyInt, PyObject *, PyInt *);
405 static int SetBufferLineList(buf_T *, PyInt, PyInt, PyObject *, PyInt *);
406 static int InsertBufferLines(buf_T *, PyInt, PyObject *, PyInt *);
407
408 static PyObject *LineToString(const char *);
409 static char *StringToLine(PyObject *);
410
411 static int VimErrorCheck(void);
412
413 #define PyErr_SetVim(str) PyErr_SetString(VimError, str)
414
415 /******************************************************
416 * 1. Python interpreter main program.
417 */
418
419 static int initialised = 0;
420
421 #if PYTHON_API_VERSION < 1007 /* Python 1.4 */
422 typedef PyObject PyThreadState;
423 #endif
424
425 #ifdef PY_CAN_RECURSE
426 static PyGILState_STATE pygilstate = PyGILState_UNLOCKED;
427 #else
428 static PyThreadState *saved_python_thread = NULL;
429 #endif
430
431 /*
432 * Suspend a thread of the Python interpreter, other threads are allowed to
433 * run.
434 */
435 static void
436 Python_SaveThread(void)
437 {
438 #ifdef PY_CAN_RECURSE
439 PyGILState_Release(pygilstate);
440 #else
441 saved_python_thread = PyEval_SaveThread();
442 #endif
443 }
444
445 /*
446 * Restore a thread of the Python interpreter, waits for other threads to
447 * block.
448 */
449 static void
450 Python_RestoreThread(void)
451 {
452 #ifdef PY_CAN_RECURSE
453 pygilstate = PyGILState_Ensure();
454 #else
455 PyEval_RestoreThread(saved_python_thread);
456 saved_python_thread = NULL;
457 #endif
458 }
459
460 /*
461 * obtain a lock on the Vim data structures
462 */
463 static void Python_Lock_Vim(void)
464 {
465 }
466
467 /*
468 * release a lock on the Vim data structures
469 */
470 static void Python_Release_Vim(void)
471 {
472 }
473
474 void
475 python_end()
476 {
477 static int recurse = 0;
478
479 /* If a crash occurs while doing this, don't try again. */
480 if (recurse != 0)
481 return;
482
483 ++recurse;
484
485 #ifdef DYNAMIC_PYTHON
486 if (hinstPython && Py_IsInitialized())
487 {
488 Python_RestoreThread(); /* enter python */
489 Py_Finalize();
490 }
491 end_dynamic_python();
492 #else
493 if (Py_IsInitialized())
494 {
495 Python_RestoreThread(); /* enter python */
496 Py_Finalize();
497 }
498 #endif
499
500 --recurse;
501 }
502
503 static int
504 Python_Init(void)
505 {
506 if (!initialised)
507 {
508 #ifdef DYNAMIC_PYTHON
509 if (!python_enabled(TRUE))
510 {
511 EMSG(_("E263: Sorry, this command is disabled, the Python library could not be loaded."));
512 goto fail;
513 }
514 #endif
515
516 #if !defined(MACOS) || defined(MACOS_X_UNIX)
517 Py_Initialize();
518 #else
519 PyMac_Initialize();
520 #endif
521 /* initialise threads */
522 PyEval_InitThreads();
523
524 #ifdef DYNAMIC_PYTHON
525 get_exceptions();
526 #endif
527
528 if (PythonIO_Init())
529 goto fail;
530
531 if (PythonMod_Init())
532 goto fail;
533
534 /* the first python thread is vim's, release the lock */
535 Python_SaveThread();
536
537 initialised = 1;
538 }
539
540 return 0;
541
542 fail:
543 /* We call PythonIO_Flush() here to print any Python errors.
544 * This is OK, as it is possible to call this function even
545 * if PythonIO_Init() has not completed successfully (it will
546 * not do anything in this case).
547 */
548 PythonIO_Flush();
549 return -1;
550 }
551
552 /*
553 * External interface
554 */
555 static void
556 DoPythonCommand(exarg_T *eap, const char *cmd)
557 {
558 #ifndef PY_CAN_RECURSE
559 static int recursive = 0;
560 #endif
561 #if defined(MACOS) && !defined(MACOS_X_UNIX)
562 GrafPtr oldPort;
563 #endif
564 #if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
565 char *saved_locale;
566 #endif
567
568 #ifndef PY_CAN_RECURSE
569 if (recursive)
570 {
571 EMSG(_("E659: Cannot invoke Python recursively"));
572 return;
573 }
574 ++recursive;
575 #endif
576
577 #if defined(MACOS) && !defined(MACOS_X_UNIX)
578 GetPort(&oldPort);
579 /* Check if the Python library is available */
580 if ((Ptr)PyMac_Initialize == (Ptr)kUnresolvedCFragSymbolAddress)
581 goto theend;
582 #endif
583 if (Python_Init())
584 goto theend;
585
586 RangeStart = eap->line1;
587 RangeEnd = eap->line2;
588 Python_Release_Vim(); /* leave vim */
589
590 #if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
591 /* Python only works properly when the LC_NUMERIC locale is "C". */
592 saved_locale = setlocale(LC_NUMERIC, NULL);
593 if (saved_locale == NULL || STRCMP(saved_locale, "C") == 0)
594 saved_locale = NULL;
595 else
596 {
597 /* Need to make a copy, value may change when setting new locale. */
598 saved_locale = (char *)vim_strsave((char_u *)saved_locale);
599 (void)setlocale(LC_NUMERIC, "C");
600 }
601 #endif
602
603 Python_RestoreThread(); /* enter python */
604
605 PyRun_SimpleString((char *)(cmd));
606
607 Python_SaveThread(); /* leave python */
608
609 #if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
610 if (saved_locale != NULL)
611 {
612 (void)setlocale(LC_NUMERIC, saved_locale);
613 vim_free(saved_locale);
614 }
615 #endif
616
617 Python_Lock_Vim(); /* enter vim */
618 PythonIO_Flush();
619 #if defined(MACOS) && !defined(MACOS_X_UNIX)
620 SetPort(oldPort);
621 #endif
622
623 theend:
624 #ifndef PY_CAN_RECURSE
625 --recursive;
626 #endif
627 return; /* keeps lint happy */
628 }
629
630 /*
631 * ":python"
632 */
633 void
634 ex_python(exarg_T *eap)
635 {
636 char_u *script;
637
638 script = script_get(eap, eap->arg);
639 if (!eap->skip)
640 {
641 if (script == NULL)
642 DoPythonCommand(eap, (char *)eap->arg);
643 else
644 DoPythonCommand(eap, (char *)script);
645 }
646 vim_free(script);
647 }
648
649 #define BUFFER_SIZE 1024
650
651 /*
652 * ":pyfile"
653 */
654 void
655 ex_pyfile(exarg_T *eap)
656 {
657 static char buffer[BUFFER_SIZE];
658 const char *file = (char *)eap->arg;
659 char *p;
660
661 /* Have to do it like this. PyRun_SimpleFile requires you to pass a
662 * stdio file pointer, but Vim and the Python DLL are compiled with
663 * different options under Windows, meaning that stdio pointers aren't
664 * compatible between the two. Yuk.
665 *
666 * Put the string "execfile('file')" into buffer. But, we need to
667 * escape any backslashes or single quotes in the file name, so that
668 * Python won't mangle the file name.
669 */
670 strcpy(buffer, "execfile('");
671 p = buffer + 10; /* size of "execfile('" */
672
673 while (*file && p < buffer + (BUFFER_SIZE - 3))
674 {
675 if (*file == '\\' || *file == '\'')
676 *p++ = '\\';
677 *p++ = *file++;
678 }
679
680 /* If we didn't finish the file name, we hit a buffer overflow */
681 if (*file != '\0')
682 return;
683
684 /* Put in the terminating "')" and a null */
685 *p++ = '\'';
686 *p++ = ')';
687 *p++ = '\0';
688
689 /* Execute the file */
690 DoPythonCommand(eap, buffer);
691 }
692
693 /******************************************************
694 * 2. Python output stream: writes output via [e]msg().
695 */
696
697 /* Implementation functions
698 */
699
700 static PyObject *OutputGetattr(PyObject *, char *);
701 static int OutputSetattr(PyObject *, char *, PyObject *);
702
703 static PyObject *OutputWrite(PyObject *, PyObject *);
704 static PyObject *OutputWritelines(PyObject *, PyObject *);
705
706 typedef void (*writefn)(char_u *);
707 static void writer(writefn fn, char_u *str, PyInt n);
708
709 /* Output object definition
710 */
711
712 typedef struct
713 {
714 PyObject_HEAD
715 long softspace;
716 long error;
717 } OutputObject;
718
719 static struct PyMethodDef OutputMethods[] = {
720 /* name, function, calling, documentation */
721 {"write", OutputWrite, 1, "" },
722 {"writelines", OutputWritelines, 1, "" },
723 { NULL, NULL, 0, NULL }
724 };
725
726 static PyTypeObject OutputType = {
727 PyObject_HEAD_INIT(0)
728 0,
729 "message",
730 sizeof(OutputObject),
731 0,
732
733 (destructor) 0,
734 (printfunc) 0,
735 (getattrfunc) OutputGetattr,
736 (setattrfunc) OutputSetattr,
737 (cmpfunc) 0,
738 (reprfunc) 0,
739
740 0, /* as number */
741 0, /* as sequence */
742 0, /* as mapping */
743
744 (hashfunc) 0,
745 (ternaryfunc) 0,
746 (reprfunc) 0
747 };
748
749 /*************/
750
751 static PyObject *
752 OutputGetattr(PyObject *self, char *name)
753 {
754 if (strcmp(name, "softspace") == 0)
755 return PyInt_FromLong(((OutputObject *)(self))->softspace);
756
757 return Py_FindMethod(OutputMethods, self, name);
758 }
759
760 static int
761 OutputSetattr(PyObject *self, char *name, PyObject *val)
762 {
763 if (val == NULL) {
764 PyErr_SetString(PyExc_AttributeError, _("can't delete OutputObject attributes"));
765 return -1;
766 }
767
768 if (strcmp(name, "softspace") == 0)
769 {
770 if (!PyInt_Check(val)) {
771 PyErr_SetString(PyExc_TypeError, _("softspace must be an integer"));
772 return -1;
773 }
774
775 ((OutputObject *)(self))->softspace = PyInt_AsLong(val);
776 return 0;
777 }
778
779 PyErr_SetString(PyExc_AttributeError, _("invalid attribute"));
780 return -1;
781 }
782
783 /*************/
784
785 static PyObject *
786 OutputWrite(PyObject *self, PyObject *args)
787 {
788 int len;
789 char *str;
790 int error = ((OutputObject *)(self))->error;
791
792 if (!PyArg_ParseTuple(args, "s#", &str, &len))
793 return NULL;
794
795 Py_BEGIN_ALLOW_THREADS
796 Python_Lock_Vim();
797 writer((writefn)(error ? emsg : msg), (char_u *)str, len);
798 Python_Release_Vim();
799 Py_END_ALLOW_THREADS
800
801 Py_INCREF(Py_None);
802 return Py_None;
803 }
804
805 static PyObject *
806 OutputWritelines(PyObject *self, PyObject *args)
807 {
808 PyInt n;
809 PyInt i;
810 PyObject *list;
811 int error = ((OutputObject *)(self))->error;
812
813 if (!PyArg_ParseTuple(args, "O", &list))
814 return NULL;
815 Py_INCREF(list);
816
817 if (!PyList_Check(list)) {
818 PyErr_SetString(PyExc_TypeError, _("writelines() requires list of strings"));
819 Py_DECREF(list);
820 return NULL;
821 }
822
823 n = PyList_Size(list);
824
825 for (i = 0; i < n; ++i)
826 {
827 PyObject *line = PyList_GetItem(list, i);
828 char *str;
829 PyInt len;
830
831 if (!PyArg_Parse(line, "s#", &str, &len)) {
832 PyErr_SetString(PyExc_TypeError, _("writelines() requires list of strings"));
833 Py_DECREF(list);
834 return NULL;
835 }
836
837 Py_BEGIN_ALLOW_THREADS
838 Python_Lock_Vim();
839 writer((writefn)(error ? emsg : msg), (char_u *)str, len);
840 Python_Release_Vim();
841 Py_END_ALLOW_THREADS
842 }
843
844 Py_DECREF(list);
845 Py_INCREF(Py_None);
846 return Py_None;
847 }
848
849 /* Output buffer management
850 */
851
852 static char_u *buffer = NULL;
853 static PyInt buffer_len = 0;
854 static PyInt buffer_size = 0;
855
856 static writefn old_fn = NULL;
857
858 static void
859 buffer_ensure(PyInt n)
860 {
861 PyInt new_size;
862 char_u *new_buffer;
863
864 if (n < buffer_size)
865 return;
866
867 new_size = buffer_size;
868 while (new_size < n)
869 new_size += 80;
870
871 if (new_size != buffer_size)
872 {
873 new_buffer = alloc((unsigned)new_size);
874 if (new_buffer == NULL)
875 return;
876
877 if (buffer)
878 {
879 memcpy(new_buffer, buffer, buffer_len);
880 vim_free(buffer);
881 }
882
883 buffer = new_buffer;
884 buffer_size = new_size;
885 }
886 }
887
888 static void
889 PythonIO_Flush(void)
890 {
891 if (old_fn && buffer_len)
892 {
893 buffer[buffer_len] = 0;
894 old_fn(buffer);
895 }
896
897 buffer_len = 0;
898 }
899
900 static void
901 writer(writefn fn, char_u *str, PyInt n)
902 {
903 char_u *ptr;
904
905 if (fn != old_fn && old_fn != NULL)
906 PythonIO_Flush();
907
908 old_fn = fn;
909
910 while (n > 0 && (ptr = memchr(str, '\n', n)) != NULL)
911 {
912 PyInt len = ptr - str;
913
914 buffer_ensure(buffer_len + len + 1);
915
916 memcpy(buffer + buffer_len, str, len);
917 buffer_len += len;
918 buffer[buffer_len] = 0;
919 fn(buffer);
920 str = ptr + 1;
921 n -= len + 1;
922 buffer_len = 0;
923 }
924
925 /* Put the remaining text into the buffer for later printing */
926 buffer_ensure(buffer_len + n + 1);
927 memcpy(buffer + buffer_len, str, n);
928 buffer_len += n;
929 }
930
931 /***************/
932
933 static OutputObject Output =
934 {
935 PyObject_HEAD_INIT(&OutputType)
936 0,
937 0
938 };
939
940 static OutputObject Error =
941 {
942 PyObject_HEAD_INIT(&OutputType)
943 0,
944 1
945 };
946
947 static int
948 PythonIO_Init(void)
949 {
950 /* Fixups... */
951 OutputType.ob_type = &PyType_Type;
952
953 PySys_SetObject("stdout", (PyObject *)(void *)&Output);
954 PySys_SetObject("stderr", (PyObject *)(void *)&Error);
955
956 if (PyErr_Occurred())
957 {
958 EMSG(_("E264: Python: Error initialising I/O objects"));
959 return -1;
960 }
961
962 return 0;
963 }
964
965 /******************************************************
966 * 3. Implementation of the Vim module for Python
967 */
968
969 /* Vim module - Implementation functions
970 * -------------------------------------
971 */
972
973 static PyObject *VimError;
974
975 static PyObject *VimCommand(PyObject *, PyObject *);
976 static PyObject *VimEval(PyObject *, PyObject *);
977
978 /* Window type - Implementation functions
979 * --------------------------------------
980 */
981
982 typedef struct
983 {
984 PyObject_HEAD
985 win_T *win;
986 }
987 WindowObject;
988
989 #define INVALID_WINDOW_VALUE ((win_T *)(-1))
990
991 #define WindowType_Check(obj) ((obj)->ob_type == &WindowType)
992
993 static PyObject *WindowNew(win_T *);
994
995 static void WindowDestructor(PyObject *);
996 static PyObject *WindowGetattr(PyObject *, char *);
997 static int WindowSetattr(PyObject *, char *, PyObject *);
998 static PyObject *WindowRepr(PyObject *);
999
1000 /* Buffer type - Implementation functions
1001 * --------------------------------------
1002 */
1003
1004 typedef struct
1005 {
1006 PyObject_HEAD
1007 buf_T *buf;
1008 }
1009 BufferObject;
1010
1011 #define INVALID_BUFFER_VALUE ((buf_T *)(-1))
1012
1013 #define BufferType_Check(obj) ((obj)->ob_type == &BufferType)
1014
1015 static PyObject *BufferNew (buf_T *);
1016
1017 static void BufferDestructor(PyObject *);
1018 static PyObject *BufferGetattr(PyObject *, char *);
1019 static PyObject *BufferRepr(PyObject *);
1020
1021 static PyInt BufferLength(PyObject *);
1022 static PyObject *BufferItem(PyObject *, PyInt);
1023 static PyObject *BufferSlice(PyObject *, PyInt, PyInt);
1024 static PyInt BufferAssItem(PyObject *, PyInt, PyObject *);
1025 static PyInt BufferAssSlice(PyObject *, PyInt, PyInt, PyObject *);
1026
1027 static PyObject *BufferAppend(PyObject *, PyObject *);
1028 static PyObject *BufferMark(PyObject *, PyObject *);
1029 static PyObject *BufferRange(PyObject *, PyObject *);
1030
1031 /* Line range type - Implementation functions
1032 * --------------------------------------
1033 */
1034
1035 typedef struct
1036 {
1037 PyObject_HEAD
1038 BufferObject *buf;
1039 PyInt start;
1040 PyInt end;
1041 }
1042 RangeObject;
1043
1044 #define RangeType_Check(obj) ((obj)->ob_type == &RangeType)
1045
1046 static PyObject *RangeNew(buf_T *, PyInt, PyInt);
1047
1048 static void RangeDestructor(PyObject *);
1049 static PyObject *RangeGetattr(PyObject *, char *);
1050 static PyObject *RangeRepr(PyObject *);
1051
1052 static PyInt RangeLength(PyObject *);
1053 static PyObject *RangeItem(PyObject *, PyInt);
1054 static PyObject *RangeSlice(PyObject *, PyInt, PyInt);
1055 static PyInt RangeAssItem(PyObject *, PyInt, PyObject *);
1056 static PyInt RangeAssSlice(PyObject *, PyInt, PyInt, PyObject *);
1057
1058 static PyObject *RangeAppend(PyObject *, PyObject *);
1059
1060 /* Window list type - Implementation functions
1061 * -------------------------------------------
1062 */
1063
1064 static PyInt WinListLength(PyObject *);
1065 static PyObject *WinListItem(PyObject *, PyInt);
1066
1067 /* Buffer list type - Implementation functions
1068 * -------------------------------------------
1069 */
1070
1071 static PyInt BufListLength(PyObject *);
1072 static PyObject *BufListItem(PyObject *, PyInt);
1073
1074 /* Current objects type - Implementation functions
1075 * -----------------------------------------------
1076 */
1077
1078 static PyObject *CurrentGetattr(PyObject *, char *);
1079 static int CurrentSetattr(PyObject *, char *, PyObject *);
1080
1081 /* Vim module - Definitions
1082 */
1083
1084 static struct PyMethodDef VimMethods[] = {
1085 /* name, function, calling, documentation */
1086 {"command", VimCommand, 1, "Execute a Vim ex-mode command" },
1087 {"eval", VimEval, 1, "Evaluate an expression using Vim evaluator" },
1088 { NULL, NULL, 0, NULL }
1089 };
1090
1091 /* Vim module - Implementation
1092 */
1093 /*ARGSUSED*/
1094 static PyObject *
1095 VimCommand(PyObject *self, PyObject *args)
1096 {
1097 char *cmd;
1098 PyObject *result;
1099
1100 if (!PyArg_ParseTuple(args, "s", &cmd))
1101 return NULL;
1102
1103 PyErr_Clear();
1104
1105 Py_BEGIN_ALLOW_THREADS
1106 Python_Lock_Vim();
1107
1108 do_cmdline_cmd((char_u *)cmd);
1109 update_screen(VALID);
1110
1111 Python_Release_Vim();
1112 Py_END_ALLOW_THREADS
1113
1114 if (VimErrorCheck())
1115 result = NULL;
1116 else
1117 result = Py_None;
1118
1119 Py_XINCREF(result);
1120 return result;
1121 }
1122
1123 #ifdef FEAT_EVAL
1124 /*
1125 * Function to translate a typval_T into a PyObject; this will recursively
1126 * translate lists/dictionaries into their Python equivalents.
1127 *
1128 * The depth parameter is to avoid infinite recursion, set it to 1 when
1129 * you call VimToPython.
1130 */
1131 static PyObject *
1132 VimToPython(typval_T *our_tv, int depth, PyObject *lookupDict)
1133 {
1134 PyObject *result;
1135 PyObject *newObj;
1136 char ptrBuf[NUMBUFLEN];
1137
1138 /* Avoid infinite recursion */
1139 if (depth > 100)
1140 {
1141 Py_INCREF(Py_None);
1142 result = Py_None;
1143 return result;
1144 }
1145
1146 /* Check if we run into a recursive loop. The item must be in lookupDict
1147 * then and we can use it again. */
1148 sprintf(ptrBuf, PRINTF_DECIMAL_LONG_U, (long_u)our_tv);
1149 result = PyDict_GetItemString(lookupDict, ptrBuf);
1150 if (result != NULL)
1151 Py_INCREF(result);
1152 else if (our_tv->v_type == VAR_STRING)
1153 {
1154 result = Py_BuildValue("s", our_tv->vval.v_string);
1155 PyDict_SetItemString(lookupDict, ptrBuf, result);
1156 }
1157 else if (our_tv->v_type == VAR_NUMBER)
1158 {
1159 char buf[NUMBUFLEN];
1160
1161 /* For backwards compatibility numbers are stored as strings. */
1162 sprintf(buf, "%ld", (long)our_tv->vval.v_number);
1163 result = Py_BuildValue("s", buf);
1164 PyDict_SetItemString(lookupDict, ptrBuf, result);
1165 }
1166 # ifdef FEAT_FLOAT
1167 else if (our_tv->v_type == VAR_FLOAT)
1168 {
1169 char buf[NUMBUFLEN];
1170
1171 sprintf(buf, "%f", our_tv->vval.v_float);
1172 result = Py_BuildValue("s", buf);
1173 PyDict_SetItemString(lookupDict, ptrBuf, result);
1174 }
1175 # endif
1176 else if (our_tv->v_type == VAR_LIST)
1177 {
1178 list_T *list = our_tv->vval.v_list;
1179 listitem_T *curr;
1180
1181 result = PyList_New(0);
1182 PyDict_SetItemString(lookupDict, ptrBuf, result);
1183
1184 if (list != NULL)
1185 {
1186 for (curr = list->lv_first; curr != NULL; curr = curr->li_next)
1187 {
1188 newObj = VimToPython(&curr->li_tv, depth + 1, lookupDict);
1189 PyList_Append(result, newObj);
1190 Py_DECREF(newObj);
1191 }
1192 }
1193 }
1194 else if (our_tv->v_type == VAR_DICT)
1195 {
1196 result = PyDict_New();
1197 PyDict_SetItemString(lookupDict, ptrBuf, result);
1198
1199 if (our_tv->vval.v_dict != NULL)
1200 {
1201 hashtab_T *ht = &our_tv->vval.v_dict->dv_hashtab;
1202 long_u todo = ht->ht_used;
1203 hashitem_T *hi;
1204 dictitem_T *di;
1205
1206 for (hi = ht->ht_array; todo > 0; ++hi)
1207 {
1208 if (!HASHITEM_EMPTY(hi))
1209 {
1210 --todo;
1211
1212 di = dict_lookup(hi);
1213 newObj = VimToPython(&di->di_tv, depth + 1, lookupDict);
1214 PyDict_SetItemString(result, (char *)hi->hi_key, newObj);
1215 Py_DECREF(newObj);
1216 }
1217 }
1218 }
1219 }
1220 else
1221 {
1222 Py_INCREF(Py_None);
1223 result = Py_None;
1224 }
1225
1226 return result;
1227 }
1228 #endif
1229
1230 /*ARGSUSED*/
1231 static PyObject *
1232 VimEval(PyObject *self, PyObject *args)
1233 {
1234 #ifdef FEAT_EVAL
1235 char *expr;
1236 typval_T *our_tv;
1237 PyObject *result;
1238 PyObject *lookup_dict;
1239
1240 if (!PyArg_ParseTuple(args, "s", &expr))
1241 return NULL;
1242
1243 Py_BEGIN_ALLOW_THREADS
1244 Python_Lock_Vim();
1245 our_tv = eval_expr((char_u *)expr, NULL);
1246
1247 Python_Release_Vim();
1248 Py_END_ALLOW_THREADS
1249
1250 if (our_tv == NULL)
1251 {
1252 PyErr_SetVim(_("invalid expression"));
1253 return NULL;
1254 }
1255
1256 /* Convert the Vim type into a Python type. Create a dictionary that's
1257 * used to check for recursive loops. */
1258 lookup_dict = PyDict_New();
1259 result = VimToPython(our_tv, 1, lookup_dict);
1260 Py_DECREF(lookup_dict);
1261
1262
1263 Py_BEGIN_ALLOW_THREADS
1264 Python_Lock_Vim();
1265 free_tv(our_tv);
1266 Python_Release_Vim();
1267 Py_END_ALLOW_THREADS
1268
1269 return result;
1270 #else
1271 PyErr_SetVim(_("expressions disabled at compile time"));
1272 return NULL;
1273 #endif
1274 }
1275
1276 /* Common routines for buffers and line ranges
1277 * -------------------------------------------
1278 */
1279 static int
1280 CheckBuffer(BufferObject *this)
1281 {
1282 if (this->buf == INVALID_BUFFER_VALUE)
1283 {
1284 PyErr_SetVim(_("attempt to refer to deleted buffer"));
1285 return -1;
1286 }
1287
1288 return 0;
1289 }
1290
1291 static PyObject *
1292 RBItem(BufferObject *self, PyInt n, PyInt start, PyInt end)
1293 {
1294 if (CheckBuffer(self))
1295 return NULL;
1296
1297 if (n < 0 || n > end - start)
1298 {
1299 PyErr_SetString(PyExc_IndexError, _("line number out of range"));
1300 return NULL;
1301 }
1302
1303 return GetBufferLine(self->buf, n+start);
1304 }
1305
1306 static PyObject *
1307 RBSlice(BufferObject *self, PyInt lo, PyInt hi, PyInt start, PyInt end)
1308 {
1309 PyInt size;
1310
1311 if (CheckBuffer(self))
1312 return NULL;
1313
1314 size = end - start + 1;
1315
1316 if (lo < 0)
1317 lo = 0;
1318 else if (lo > size)
1319 lo = size;
1320 if (hi < 0)
1321 hi = 0;
1322 if (hi < lo)
1323 hi = lo;
1324 else if (hi > size)
1325 hi = size;
1326
1327 return GetBufferLineList(self->buf, lo+start, hi+start);
1328 }
1329
1330 static PyInt
1331 RBAssItem(BufferObject *self, PyInt n, PyObject *val, PyInt start, PyInt end, PyInt *new_end)
1332 {
1333 PyInt len_change;
1334
1335 if (CheckBuffer(self))
1336 return -1;
1337
1338 if (n < 0 || n > end - start)
1339 {
1340 PyErr_SetString(PyExc_IndexError, _("line number out of range"));
1341 return -1;
1342 }
1343
1344 if (SetBufferLine(self->buf, n+start, val, &len_change) == FAIL)
1345 return -1;
1346
1347 if (new_end)
1348 *new_end = end + len_change;
1349
1350 return 0;
1351 }
1352
1353 static PyInt
1354 RBAssSlice(BufferObject *self, PyInt lo, PyInt hi, PyObject *val, PyInt start, PyInt end, PyInt *new_end)
1355 {
1356 PyInt size;
1357 PyInt len_change;
1358
1359 /* Self must be a valid buffer */
1360 if (CheckBuffer(self))
1361 return -1;
1362
1363 /* Sort out the slice range */
1364 size = end - start + 1;
1365
1366 if (lo < 0)
1367 lo = 0;
1368 else if (lo > size)
1369 lo = size;
1370 if (hi < 0)
1371 hi = 0;
1372 if (hi < lo)
1373 hi = lo;
1374 else if (hi > size)
1375 hi = size;
1376
1377 if (SetBufferLineList(self->buf, lo+start, hi+start, val, &len_change) == FAIL)
1378 return -1;
1379
1380 if (new_end)
1381 *new_end = end + len_change;
1382
1383 return 0;
1384 }
1385
1386 static PyObject *
1387 RBAppend(BufferObject *self, PyObject *args, PyInt start, PyInt end, PyInt *new_end)
1388 {
1389 PyObject *lines;
1390 PyInt len_change;
1391 PyInt max;
1392 PyInt n;
1393
1394 if (CheckBuffer(self))
1395 return NULL;
1396
1397 max = n = end - start + 1;
1398
1399 if (!PyArg_ParseTuple(args, "O|" Py_ssize_t_fmt, &lines, &n))
1400 return NULL;
1401
1402 if (n < 0 || n > max)
1403 {
1404 PyErr_SetString(PyExc_ValueError, _("line number out of range"));
1405 return NULL;
1406 }
1407
1408 if (InsertBufferLines(self->buf, n + start - 1, lines, &len_change) == FAIL)
1409 return NULL;
1410
1411 if (new_end)
1412 *new_end = end + len_change;
1413
1414 Py_INCREF(Py_None);
1415 return Py_None;
1416 }
1417
1418
1419 /* Buffer object - Definitions
1420 */
1421
1422 static struct PyMethodDef BufferMethods[] = {
1423 /* name, function, calling, documentation */
1424 {"append", BufferAppend, 1, "Append data to Vim buffer" },
1425 {"mark", BufferMark, 1, "Return (row,col) representing position of named mark" },
1426 {"range", BufferRange, 1, "Return a range object which represents the part of the given buffer between line numbers s and e" },
1427 { NULL, NULL, 0, NULL }
1428 };
1429
1430 static PySequenceMethods BufferAsSeq = {
1431 (PyInquiry) BufferLength, /* sq_length, len(x) */
1432 (binaryfunc) 0, /* BufferConcat, */ /* sq_concat, x+y */
1433 (PyIntArgFunc) 0, /* BufferRepeat, */ /* sq_repeat, x*n */
1434 (PyIntArgFunc) BufferItem, /* sq_item, x[i] */
1435 (PyIntIntArgFunc) BufferSlice, /* sq_slice, x[i:j] */
1436 (PyIntObjArgProc) BufferAssItem, /* sq_ass_item, x[i]=v */
1437 (PyIntIntObjArgProc) BufferAssSlice, /* sq_ass_slice, x[i:j]=v */
1438 };
1439
1440 static PyTypeObject BufferType = {
1441 PyObject_HEAD_INIT(0)
1442 0,
1443 "buffer",
1444 sizeof(BufferObject),
1445 0,
1446
1447 (destructor) BufferDestructor, /* tp_dealloc, refcount==0 */
1448 (printfunc) 0, /* tp_print, print x */
1449 (getattrfunc) BufferGetattr, /* tp_getattr, x.attr */
1450 (setattrfunc) 0, /* tp_setattr, x.attr=v */
1451 (cmpfunc) 0, /* tp_compare, x>y */
1452 (reprfunc) BufferRepr, /* tp_repr, `x`, print x */
1453
1454 0, /* as number */
1455 &BufferAsSeq, /* as sequence */
1456 0, /* as mapping */
1457
1458 (hashfunc) 0, /* tp_hash, dict(x) */
1459 (ternaryfunc) 0, /* tp_call, x() */
1460 (reprfunc) 0, /* tp_str, str(x) */
1461 };
1462
1463 /* Buffer object - Implementation
1464 */
1465
1466 static PyObject *
1467 BufferNew(buf_T *buf)
1468 {
1469 /* We need to handle deletion of buffers underneath us.
1470 * If we add a "b_python_ref" field to the buf_T structure,
1471 * then we can get at it in buf_freeall() in vim. We then
1472 * need to create only ONE Python object per buffer - if
1473 * we try to create a second, just INCREF the existing one
1474 * and return it. The (single) Python object referring to
1475 * the buffer is stored in "b_python_ref".
1476 * Question: what to do on a buf_freeall(). We'll probably
1477 * have to either delete the Python object (DECREF it to
1478 * zero - a bad idea, as it leaves dangling refs!) or
1479 * set the buf_T * value to an invalid value (-1?), which
1480 * means we need checks in all access functions... Bah.
1481 */
1482
1483 BufferObject *self;
1484
1485 if (buf->b_python_ref != NULL)
1486 {
1487 self = buf->b_python_ref;
1488 Py_INCREF(self);
1489 }
1490 else
1491 {
1492 self = PyObject_NEW(BufferObject, &BufferType);
1493 if (self == NULL)
1494 return NULL;
1495 self->buf = buf;
1496 buf->b_python_ref = self;
1497 }
1498
1499 return (PyObject *)(self);
1500 }
1501
1502 static void
1503 BufferDestructor(PyObject *self)
1504 {
1505 BufferObject *this = (BufferObject *)(self);
1506
1507 if (this->buf && this->buf != INVALID_BUFFER_VALUE)
1508 this->buf->b_python_ref = NULL;
1509
1510 Py_DECREF(self);
1511 }
1512
1513 static PyObject *
1514 BufferGetattr(PyObject *self, char *name)
1515 {
1516 BufferObject *this = (BufferObject *)(self);
1517
1518 if (CheckBuffer(this))
1519 return NULL;
1520
1521 if (strcmp(name, "name") == 0)
1522 return Py_BuildValue("s", this->buf->b_ffname);
1523 else if (strcmp(name, "number") == 0)
1524 return Py_BuildValue(Py_ssize_t_fmt, this->buf->b_fnum);
1525 else if (strcmp(name,"__members__") == 0)
1526 return Py_BuildValue("[ss]", "name", "number");
1527 else
1528 return Py_FindMethod(BufferMethods, self, name);
1529 }
1530
1531 static PyObject *
1532 BufferRepr(PyObject *self)
1533 {
1534 static char repr[100];
1535 BufferObject *this = (BufferObject *)(self);
1536
1537 if (this->buf == INVALID_BUFFER_VALUE)
1538 {
1539 vim_snprintf(repr, 100, _("<buffer object (deleted) at %p>"), (self));
1540 return PyString_FromString(repr);
1541 }
1542 else
1543 {
1544 char *name = (char *)this->buf->b_fname;
1545 PyInt len;
1546
1547 if (name == NULL)
1548 name = "";
1549 len = strlen(name);
1550
1551 if (len > 35)
1552 name = name + (35 - len);
1553
1554 vim_snprintf(repr, 100, "<buffer %s%s>", len > 35 ? "..." : "", name);
1555
1556 return PyString_FromString(repr);
1557 }
1558 }
1559
1560 /******************/
1561
1562 static PyInt
1563 BufferLength(PyObject *self)
1564 {
1565 /* HOW DO WE SIGNAL AN ERROR FROM THIS FUNCTION? */
1566 if (CheckBuffer((BufferObject *)(self)))
1567 return -1; /* ??? */
1568
1569 return (((BufferObject *)(self))->buf->b_ml.ml_line_count);
1570 }
1571
1572 static PyObject *
1573 BufferItem(PyObject *self, PyInt n)
1574 {
1575 return RBItem((BufferObject *)(self), n, 1,
1576 (int)((BufferObject *)(self))->buf->b_ml.ml_line_count);
1577 }
1578
1579 static PyObject *
1580 BufferSlice(PyObject *self, PyInt lo, PyInt hi)
1581 {
1582 return RBSlice((BufferObject *)(self), lo, hi, 1,
1583 (int)((BufferObject *)(self))->buf->b_ml.ml_line_count);
1584 }
1585
1586 static PyInt
1587 BufferAssItem(PyObject *self, PyInt n, PyObject *val)
1588 {
1589 return RBAssItem((BufferObject *)(self), n, val, 1,
1590 (PyInt)((BufferObject *)(self))->buf->b_ml.ml_line_count,
1591 NULL);
1592 }
1593
1594 static PyInt
1595 BufferAssSlice(PyObject *self, PyInt lo, PyInt hi, PyObject *val)
1596 {
1597 return RBAssSlice((BufferObject *)(self), lo, hi, val, 1,
1598 (PyInt)((BufferObject *)(self))->buf->b_ml.ml_line_count,
1599 NULL);
1600 }
1601
1602 static PyObject *
1603 BufferAppend(PyObject *self, PyObject *args)
1604 {
1605 return RBAppend((BufferObject *)(self), args, 1,
1606 (PyInt)((BufferObject *)(self))->buf->b_ml.ml_line_count,
1607 NULL);
1608 }
1609
1610 static PyObject *
1611 BufferMark(PyObject *self, PyObject *args)
1612 {
1613 pos_T *posp;
1614 char mark;
1615 buf_T *curbuf_save;
1616
1617 if (CheckBuffer((BufferObject *)(self)))
1618 return NULL;
1619
1620 if (!PyArg_ParseTuple(args, "c", &mark))
1621 return NULL;
1622
1623 curbuf_save = curbuf;
1624 curbuf = ((BufferObject *)(self))->buf;
1625 posp = getmark(mark, FALSE);
1626 curbuf = curbuf_save;
1627
1628 if (posp == NULL)
1629 {
1630 PyErr_SetVim(_("invalid mark name"));
1631 return NULL;
1632 }
1633
1634 /* Ckeck for keyboard interrupt */
1635 if (VimErrorCheck())
1636 return NULL;
1637
1638 if (posp->lnum <= 0)
1639 {
1640 /* Or raise an error? */
1641 Py_INCREF(Py_None);
1642 return Py_None;
1643 }
1644
1645 return Py_BuildValue("(ll)", (long)(posp->lnum), (long)(posp->col));
1646 }
1647
1648 static PyObject *
1649 BufferRange(PyObject *self, PyObject *args)
1650 {
1651 PyInt start;
1652 PyInt end;
1653
1654 if (CheckBuffer((BufferObject *)(self)))
1655 return NULL;
1656
1657 if (!PyArg_ParseTuple(args, Py_ssize_t_fmt Py_ssize_t_fmt, &start, &end))
1658 return NULL;
1659
1660 return RangeNew(((BufferObject *)(self))->buf, start, end);
1661 }
1662
1663 /* Line range object - Definitions
1664 */
1665
1666 static struct PyMethodDef RangeMethods[] = {
1667 /* name, function, calling, documentation */
1668 {"append", RangeAppend, 1, "Append data to the Vim range" },
1669 { NULL, NULL, 0, NULL }
1670 };
1671
1672 static PySequenceMethods RangeAsSeq = {
1673 (PyInquiry) RangeLength, /* sq_length, len(x) */
1674 (binaryfunc) 0, /* RangeConcat, */ /* sq_concat, x+y */
1675 (PyIntArgFunc) 0, /* RangeRepeat, */ /* sq_repeat, x*n */
1676 (PyIntArgFunc) RangeItem, /* sq_item, x[i] */
1677 (PyIntIntArgFunc) RangeSlice, /* sq_slice, x[i:j] */
1678 (PyIntObjArgProc) RangeAssItem, /* sq_ass_item, x[i]=v */
1679 (PyIntIntObjArgProc) RangeAssSlice, /* sq_ass_slice, x[i:j]=v */
1680 };
1681
1682 static PyTypeObject RangeType = {
1683 PyObject_HEAD_INIT(0)
1684 0,
1685 "range",
1686 sizeof(RangeObject),
1687 0,
1688
1689 (destructor) RangeDestructor, /* tp_dealloc, refcount==0 */
1690 (printfunc) 0, /* tp_print, print x */
1691 (getattrfunc) RangeGetattr, /* tp_getattr, x.attr */
1692 (setattrfunc) 0, /* tp_setattr, x.attr=v */
1693 (cmpfunc) 0, /* tp_compare, x>y */
1694 (reprfunc) RangeRepr, /* tp_repr, `x`, print x */
1695
1696 0, /* as number */
1697 &RangeAsSeq, /* as sequence */
1698 0, /* as mapping */
1699
1700 (hashfunc) 0, /* tp_hash, dict(x) */
1701 (ternaryfunc) 0, /* tp_call, x() */
1702 (reprfunc) 0, /* tp_str, str(x) */
1703 };
1704
1705 /* Line range object - Implementation
1706 */
1707
1708 static PyObject *
1709 RangeNew(buf_T *buf, PyInt start, PyInt end)
1710 {
1711 BufferObject *bufr;
1712 RangeObject *self;
1713 self = PyObject_NEW(RangeObject, &RangeType);
1714 if (self == NULL)
1715 return NULL;
1716
1717 bufr = (BufferObject *)BufferNew(buf);
1718 if (bufr == NULL)
1719 {
1720 Py_DECREF(self);
1721 return NULL;
1722 }
1723 Py_INCREF(bufr);
1724
1725 self->buf = bufr;
1726 self->start = start;
1727 self->end = end;
1728
1729 return (PyObject *)(self);
1730 }
1731
1732 static void
1733 RangeDestructor(PyObject *self)
1734 {
1735 Py_DECREF(((RangeObject *)(self))->buf);
1736 Py_DECREF(self);
1737 }
1738
1739 static PyObject *
1740 RangeGetattr(PyObject *self, char *name)
1741 {
1742 if (strcmp(name, "start") == 0)
1743 return Py_BuildValue(Py_ssize_t_fmt, ((RangeObject *)(self))->start - 1);
1744 else if (strcmp(name, "end") == 0)
1745 return Py_BuildValue(Py_ssize_t_fmt, ((RangeObject *)(self))->end - 1);
1746 else
1747 return Py_FindMethod(RangeMethods, self, name);
1748 }
1749
1750 static PyObject *
1751 RangeRepr(PyObject *self)
1752 {
1753 static char repr[100];
1754 RangeObject *this = (RangeObject *)(self);
1755
1756 if (this->buf->buf == INVALID_BUFFER_VALUE)
1757 {
1758 vim_snprintf(repr, 100, "<range object (for deleted buffer) at %p>",
1759 (self));
1760 return PyString_FromString(repr);
1761 }
1762 else
1763 {
1764 char *name = (char *)this->buf->buf->b_fname;
1765 int len;
1766
1767 if (name == NULL)
1768 name = "";
1769 len = (int)strlen(name);
1770
1771 if (len > 45)
1772 name = name + (45 - len);
1773
1774 vim_snprintf(repr, 100, "<range %s%s (%d:%d)>",
1775 len > 45 ? "..." : "", name,
1776 this->start, this->end);
1777
1778 return PyString_FromString(repr);
1779 }
1780 }
1781
1782 /****************/
1783
1784 static PyInt
1785 RangeLength(PyObject *self)
1786 {
1787 /* HOW DO WE SIGNAL AN ERROR FROM THIS FUNCTION? */
1788 if (CheckBuffer(((RangeObject *)(self))->buf))
1789 return -1; /* ??? */
1790
1791 return (((RangeObject *)(self))->end - ((RangeObject *)(self))->start + 1);
1792 }
1793
1794 static PyObject *
1795 RangeItem(PyObject *self, PyInt n)
1796 {
1797 return RBItem(((RangeObject *)(self))->buf, n,
1798 ((RangeObject *)(self))->start,
1799 ((RangeObject *)(self))->end);
1800 }
1801
1802 static PyObject *
1803 RangeSlice(PyObject *self, PyInt lo, PyInt hi)
1804 {
1805 return RBSlice(((RangeObject *)(self))->buf, lo, hi,
1806 ((RangeObject *)(self))->start,
1807 ((RangeObject *)(self))->end);
1808 }
1809
1810 static PyInt
1811 RangeAssItem(PyObject *self, PyInt n, PyObject *val)
1812 {
1813 return RBAssItem(((RangeObject *)(self))->buf, n, val,
1814 ((RangeObject *)(self))->start,
1815 ((RangeObject *)(self))->end,
1816 &((RangeObject *)(self))->end);
1817 }
1818
1819 static PyInt
1820 RangeAssSlice(PyObject *self, PyInt lo, PyInt hi, PyObject *val)
1821 {
1822 return RBAssSlice(((RangeObject *)(self))->buf, lo, hi, val,
1823 ((RangeObject *)(self))->start,
1824 ((RangeObject *)(self))->end,
1825 &((RangeObject *)(self))->end);
1826 }
1827
1828 static PyObject *
1829 RangeAppend(PyObject *self, PyObject *args)
1830 {
1831 return RBAppend(((RangeObject *)(self))->buf, args,
1832 ((RangeObject *)(self))->start,
1833 ((RangeObject *)(self))->end,
1834 &((RangeObject *)(self))->end);
1835 }
1836
1837 /* Buffer list object - Definitions
1838 */
1839
1840 typedef struct
1841 {
1842 PyObject_HEAD
1843 }
1844 BufListObject;
1845
1846 static PySequenceMethods BufListAsSeq = {
1847 (PyInquiry) BufListLength, /* sq_length, len(x) */
1848 (binaryfunc) 0, /* sq_concat, x+y */
1849 (PyIntArgFunc) 0, /* sq_repeat, x*n */
1850 (PyIntArgFunc) BufListItem, /* sq_item, x[i] */
1851 (PyIntIntArgFunc) 0, /* sq_slice, x[i:j] */
1852 (PyIntObjArgProc) 0, /* sq_ass_item, x[i]=v */
1853 (PyIntIntObjArgProc) 0, /* sq_ass_slice, x[i:j]=v */
1854 };
1855
1856 static PyTypeObject BufListType = {
1857 PyObject_HEAD_INIT(0)
1858 0,
1859 "buffer list",
1860 sizeof(BufListObject),
1861 0,
1862
1863 (destructor) 0, /* tp_dealloc, refcount==0 */
1864 (printfunc) 0, /* tp_print, print x */
1865 (getattrfunc) 0, /* tp_getattr, x.attr */
1866 (setattrfunc) 0, /* tp_setattr, x.attr=v */
1867 (cmpfunc) 0, /* tp_compare, x>y */
1868 (reprfunc) 0, /* tp_repr, `x`, print x */
1869
1870 0, /* as number */
1871 &BufListAsSeq, /* as sequence */
1872 0, /* as mapping */
1873
1874 (hashfunc) 0, /* tp_hash, dict(x) */
1875 (ternaryfunc) 0, /* tp_call, x() */
1876 (reprfunc) 0, /* tp_str, str(x) */
1877 };
1878
1879 /* Buffer list object - Implementation
1880 */
1881
1882 /*ARGSUSED*/
1883 static PyInt
1884 BufListLength(PyObject *self)
1885 {
1886 buf_T *b = firstbuf;
1887 PyInt n = 0;
1888
1889 while (b)
1890 {
1891 ++n;
1892 b = b->b_next;
1893 }
1894
1895 return n;
1896 }
1897
1898 /*ARGSUSED*/
1899 static PyObject *
1900 BufListItem(PyObject *self, PyInt n)
1901 {
1902 buf_T *b;
1903
1904 for (b = firstbuf; b; b = b->b_next, --n)
1905 {
1906 if (n == 0)
1907 return BufferNew(b);
1908 }
1909
1910 PyErr_SetString(PyExc_IndexError, _("no such buffer"));
1911 return NULL;
1912 }
1913
1914 /* Window object - Definitions
1915 */
1916
1917 static struct PyMethodDef WindowMethods[] = {
1918 /* name, function, calling, documentation */
1919 { NULL, NULL, 0, NULL }
1920 };
1921
1922 static PyTypeObject WindowType = {
1923 PyObject_HEAD_INIT(0)
1924 0,
1925 "window",
1926 sizeof(WindowObject),
1927 0,
1928
1929 (destructor) WindowDestructor, /* tp_dealloc, refcount==0 */
1930 (printfunc) 0, /* tp_print, print x */
1931 (getattrfunc) WindowGetattr, /* tp_getattr, x.attr */
1932 (setattrfunc) WindowSetattr, /* tp_setattr, x.attr=v */
1933 (cmpfunc) 0, /* tp_compare, x>y */
1934 (reprfunc) WindowRepr, /* tp_repr, `x`, print x */
1935
1936 0, /* as number */
1937 0, /* as sequence */
1938 0, /* as mapping */
1939
1940 (hashfunc) 0, /* tp_hash, dict(x) */
1941 (ternaryfunc) 0, /* tp_call, x() */
1942 (reprfunc) 0, /* tp_str, str(x) */
1943 };
1944
1945 /* Window object - Implementation
1946 */
1947
1948 static PyObject *
1949 WindowNew(win_T *win)
1950 {
1951 /* We need to handle deletion of windows underneath us.
1952 * If we add a "w_python_ref" field to the win_T structure,
1953 * then we can get at it in win_free() in vim. We then
1954 * need to create only ONE Python object per window - if
1955 * we try to create a second, just INCREF the existing one
1956 * and return it. The (single) Python object referring to
1957 * the window is stored in "w_python_ref".
1958 * On a win_free() we set the Python object's win_T* field
1959 * to an invalid value. We trap all uses of a window
1960 * object, and reject them if the win_T* field is invalid.
1961 */
1962
1963 WindowObject *self;
1964
1965 if (win->w_python_ref)
1966 {
1967 self = win->w_python_ref;
1968 Py_INCREF(self);
1969 }
1970 else
1971 {
1972 self = PyObject_NEW(WindowObject, &WindowType);
1973 if (self == NULL)
1974 return NULL;
1975 self->win = win;
1976 win->w_python_ref = self;
1977 }
1978
1979 return (PyObject *)(self);
1980 }
1981
1982 static void
1983 WindowDestructor(PyObject *self)
1984 {
1985 WindowObject *this = (WindowObject *)(self);
1986
1987 if (this->win && this->win != INVALID_WINDOW_VALUE)
1988 this->win->w_python_ref = NULL;
1989
1990 Py_DECREF(self);
1991 }
1992
1993 static int
1994 CheckWindow(WindowObject *this)
1995 {
1996 if (this->win == INVALID_WINDOW_VALUE)
1997 {
1998 PyErr_SetVim(_("attempt to refer to deleted window"));
1999 return -1;
2000 }
2001
2002 return 0;
2003 }
2004
2005 static PyObject *
2006 WindowGetattr(PyObject *self, char *name)
2007 {
2008 WindowObject *this = (WindowObject *)(self);
2009
2010 if (CheckWindow(this))
2011 return NULL;
2012
2013 if (strcmp(name, "buffer") == 0)
2014 return (PyObject *)BufferNew(this->win->w_buffer);
2015 else if (strcmp(name, "cursor") == 0)
2016 {
2017 pos_T *pos = &this->win->w_cursor;
2018
2019 return Py_BuildValue("(ll)", (long)(pos->lnum), (long)(pos->col));
2020 }
2021 else if (strcmp(name, "height") == 0)
2022 return Py_BuildValue("l", (long)(this->win->w_height));
2023 #ifdef FEAT_VERTSPLIT
2024 else if (strcmp(name, "width") == 0)
2025 return Py_BuildValue("l", (long)(W_WIDTH(this->win)));
2026 #endif
2027 else if (strcmp(name,"__members__") == 0)
2028 return Py_BuildValue("[sss]", "buffer", "cursor", "height");
2029 else
2030 return Py_FindMethod(WindowMethods, self, name);
2031 }
2032
2033 static int
2034 WindowSetattr(PyObject *self, char *name, PyObject *val)
2035 {
2036 WindowObject *this = (WindowObject *)(self);
2037
2038 if (CheckWindow(this))
2039 return -1;
2040
2041 if (strcmp(name, "buffer") == 0)
2042 {
2043 PyErr_SetString(PyExc_TypeError, _("readonly attribute"));
2044 return -1;
2045 }
2046 else if (strcmp(name, "cursor") == 0)
2047 {
2048 long lnum;
2049 long col;
2050
2051 if (!PyArg_Parse(val, "(ll)", &lnum, &col))
2052 return -1;
2053
2054 if (lnum <= 0 || lnum > this->win->w_buffer->b_ml.ml_line_count)
2055 {
2056 PyErr_SetVim(_("cursor position outside buffer"));
2057 return -1;
2058 }
2059
2060 /* Check for keyboard interrupts */
2061 if (VimErrorCheck())
2062 return -1;
2063
2064 /* NO CHECK ON COLUMN - SEEMS NOT TO MATTER */
2065
2066 this->win->w_cursor.lnum = lnum;
2067 this->win->w_cursor.col = col;
2068 update_screen(VALID);
2069
2070 return 0;
2071 }
2072 else if (strcmp(name, "height") == 0)
2073 {
2074 int height;
2075 win_T *savewin;
2076
2077 if (!PyArg_Parse(val, "i", &height))
2078 return -1;
2079
2080 #ifdef FEAT_GUI
2081 need_mouse_correct = TRUE;
2082 #endif
2083 savewin = curwin;
2084 curwin = this->win;
2085 win_setheight(height);
2086 curwin = savewin;
2087
2088 /* Check for keyboard interrupts */
2089 if (VimErrorCheck())
2090 return -1;
2091
2092 return 0;
2093 }
2094 #ifdef FEAT_VERTSPLIT
2095 else if (strcmp(name, "width") == 0)
2096 {
2097 int width;
2098 win_T *savewin;
2099
2100 if (!PyArg_Parse(val, "i", &width))
2101 return -1;
2102
2103 #ifdef FEAT_GUI
2104 need_mouse_correct = TRUE;
2105 #endif
2106 savewin = curwin;
2107 curwin = this->win;
2108 win_setwidth(width);
2109 curwin = savewin;
2110
2111 /* Check for keyboard interrupts */
2112 if (VimErrorCheck())
2113 return -1;
2114
2115 return 0;
2116 }
2117 #endif
2118 else
2119 {
2120 PyErr_SetString(PyExc_AttributeError, name);
2121 return -1;
2122 }
2123 }
2124
2125 static PyObject *
2126 WindowRepr(PyObject *self)
2127 {
2128 static char repr[100];
2129 WindowObject *this = (WindowObject *)(self);
2130
2131 if (this->win == INVALID_WINDOW_VALUE)
2132 {
2133 vim_snprintf(repr, 100, _("<window object (deleted) at %p>"), (self));
2134 return PyString_FromString(repr);
2135 }
2136 else
2137 {
2138 int i = 0;
2139 win_T *w;
2140
2141 for (w = firstwin; w != NULL && w != this->win; w = W_NEXT(w))
2142 ++i;
2143
2144 if (w == NULL)
2145 vim_snprintf(repr, 100, _("<window object (unknown) at %p>"),
2146 (self));
2147 else
2148 vim_snprintf(repr, 100, _("<window %d>"), i);
2149
2150 return PyString_FromString(repr);
2151 }
2152 }
2153
2154 /* Window list object - Definitions
2155 */
2156
2157 typedef struct
2158 {
2159 PyObject_HEAD
2160 }
2161 WinListObject;
2162
2163 static PySequenceMethods WinListAsSeq = {
2164 (PyInquiry) WinListLength, /* sq_length, len(x) */
2165 (binaryfunc) 0, /* sq_concat, x+y */
2166 (PyIntArgFunc) 0, /* sq_repeat, x*n */
2167 (PyIntArgFunc) WinListItem, /* sq_item, x[i] */
2168 (PyIntIntArgFunc) 0, /* sq_slice, x[i:j] */
2169 (PyIntObjArgProc) 0, /* sq_ass_item, x[i]=v */
2170 (PyIntIntObjArgProc) 0, /* sq_ass_slice, x[i:j]=v */
2171 };
2172
2173 static PyTypeObject WinListType = {
2174 PyObject_HEAD_INIT(0)
2175 0,
2176 "window list",
2177 sizeof(WinListObject),
2178 0,
2179
2180 (destructor) 0, /* tp_dealloc, refcount==0 */
2181 (printfunc) 0, /* tp_print, print x */
2182 (getattrfunc) 0, /* tp_getattr, x.attr */
2183 (setattrfunc) 0, /* tp_setattr, x.attr=v */
2184 (cmpfunc) 0, /* tp_compare, x>y */
2185 (reprfunc) 0, /* tp_repr, `x`, print x */
2186
2187 0, /* as number */
2188 &WinListAsSeq, /* as sequence */
2189 0, /* as mapping */
2190
2191 (hashfunc) 0, /* tp_hash, dict(x) */
2192 (ternaryfunc) 0, /* tp_call, x() */
2193 (reprfunc) 0, /* tp_str, str(x) */
2194 };
2195
2196 /* Window list object - Implementation
2197 */
2198 /*ARGSUSED*/
2199 static PyInt
2200 WinListLength(PyObject *self)
2201 {
2202 win_T *w = firstwin;
2203 PyInt n = 0;
2204
2205 while (w != NULL)
2206 {
2207 ++n;
2208 w = W_NEXT(w);
2209 }
2210
2211 return n;
2212 }
2213
2214 /*ARGSUSED*/
2215 static PyObject *
2216 WinListItem(PyObject *self, PyInt n)
2217 {
2218 win_T *w;
2219
2220 for (w = firstwin; w != NULL; w = W_NEXT(w), --n)
2221 if (n == 0)
2222 return WindowNew(w);
2223
2224 PyErr_SetString(PyExc_IndexError, _("no such window"));
2225 return NULL;
2226 }
2227
2228 /* Current items object - Definitions
2229 */
2230
2231 typedef struct
2232 {
2233 PyObject_HEAD
2234 }
2235 CurrentObject;
2236
2237 static PyTypeObject CurrentType = {
2238 PyObject_HEAD_INIT(0)
2239 0,
2240 "current data",
2241 sizeof(CurrentObject),
2242 0,
2243
2244 (destructor) 0, /* tp_dealloc, refcount==0 */
2245 (printfunc) 0, /* tp_print, print x */
2246 (getattrfunc) CurrentGetattr, /* tp_getattr, x.attr */
2247 (setattrfunc) CurrentSetattr, /* tp_setattr, x.attr=v */
2248 (cmpfunc) 0, /* tp_compare, x>y */
2249 (reprfunc) 0, /* tp_repr, `x`, print x */
2250
2251 0, /* as number */
2252 0, /* as sequence */
2253 0, /* as mapping */
2254
2255 (hashfunc) 0, /* tp_hash, dict(x) */
2256 (ternaryfunc) 0, /* tp_call, x() */
2257 (reprfunc) 0, /* tp_str, str(x) */
2258 };
2259
2260 /* Current items object - Implementation
2261 */
2262 /*ARGSUSED*/
2263 static PyObject *
2264 CurrentGetattr(PyObject *self, char *name)
2265 {
2266 if (strcmp(name, "buffer") == 0)
2267 return (PyObject *)BufferNew(curbuf);
2268 else if (strcmp(name, "window") == 0)
2269 return (PyObject *)WindowNew(curwin);
2270 else if (strcmp(name, "line") == 0)
2271 return GetBufferLine(curbuf, (PyInt)curwin->w_cursor.lnum);
2272 else if (strcmp(name, "range") == 0)
2273 return RangeNew(curbuf, RangeStart, RangeEnd);
2274 else if (strcmp(name,"__members__") == 0)
2275 return Py_BuildValue("[ssss]", "buffer", "window", "line", "range");
2276 else
2277 {
2278 PyErr_SetString(PyExc_AttributeError, name);
2279 return NULL;
2280 }
2281 }
2282
2283 /*ARGSUSED*/
2284 static int
2285 CurrentSetattr(PyObject *self, char *name, PyObject *value)
2286 {
2287 if (strcmp(name, "line") == 0)
2288 {
2289 if (SetBufferLine(curbuf, (PyInt)curwin->w_cursor.lnum, value, NULL) == FAIL)
2290 return -1;
2291
2292 return 0;
2293 }
2294 else
2295 {
2296 PyErr_SetString(PyExc_AttributeError, name);
2297 return -1;
2298 }
2299 }
2300
2301 /* External interface
2302 */
2303
2304 void
2305 python_buffer_free(buf_T *buf)
2306 {
2307 if (buf->b_python_ref != NULL)
2308 {
2309 BufferObject *bp = buf->b_python_ref;
2310 bp->buf = INVALID_BUFFER_VALUE;
2311 buf->b_python_ref = NULL;
2312 }
2313 }
2314
2315 #if defined(FEAT_WINDOWS) || defined(PROTO)
2316 void
2317 python_window_free(win_T *win)
2318 {
2319 if (win->w_python_ref != NULL)
2320 {
2321 WindowObject *wp = win->w_python_ref;
2322 wp->win = INVALID_WINDOW_VALUE;
2323 win->w_python_ref = NULL;
2324 }
2325 }
2326 #endif
2327
2328 static BufListObject TheBufferList =
2329 {
2330 PyObject_HEAD_INIT(&BufListType)
2331 };
2332
2333 static WinListObject TheWindowList =
2334 {
2335 PyObject_HEAD_INIT(&WinListType)
2336 };
2337
2338 static CurrentObject TheCurrent =
2339 {
2340 PyObject_HEAD_INIT(&CurrentType)
2341 };
2342
2343 static int
2344 PythonMod_Init(void)
2345 {
2346 PyObject *mod;
2347 PyObject *dict;
2348 static char *(argv[2]) = {"", NULL};
2349
2350 /* Fixups... */
2351 BufferType.ob_type = &PyType_Type;
2352 RangeType.ob_type = &PyType_Type;
2353 WindowType.ob_type = &PyType_Type;
2354 BufListType.ob_type = &PyType_Type;
2355 WinListType.ob_type = &PyType_Type;
2356 CurrentType.ob_type = &PyType_Type;
2357
2358 /* Set sys.argv[] to avoid a crash in warn(). */
2359 PySys_SetArgv(1, argv);
2360
2361 mod = Py_InitModule4("vim", VimMethods, (char *)NULL, (PyObject *)NULL, PYTHON_API_VERSION);
2362 dict = PyModule_GetDict(mod);
2363
2364 VimError = Py_BuildValue("s", "vim.error");
2365
2366 PyDict_SetItemString(dict, "error", VimError);
2367 PyDict_SetItemString(dict, "buffers", (PyObject *)(void *)&TheBufferList);
2368 PyDict_SetItemString(dict, "current", (PyObject *)(void *)&TheCurrent);
2369 PyDict_SetItemString(dict, "windows", (PyObject *)(void *)&TheWindowList);
2370
2371 if (PyErr_Occurred())
2372 return -1;
2373
2374 return 0;
2375 }
2376
2377 /*************************************************************************
2378 * 4. Utility functions for handling the interface between Vim and Python.
2379 */
2380
2381 /* Get a line from the specified buffer. The line number is
2382 * in Vim format (1-based). The line is returned as a Python
2383 * string object.
2384 */
2385 static PyObject *
2386 GetBufferLine(buf_T *buf, PyInt n)
2387 {
2388 return LineToString((char *)ml_get_buf(buf, (linenr_T)n, FALSE));
2389 }
2390
2391 /* Get a list of lines from the specified buffer. The line numbers
2392 * are in Vim format (1-based). The range is from lo up to, but not
2393 * including, hi. The list is returned as a Python list of string objects.
2394 */
2395 static PyObject *
2396 GetBufferLineList(buf_T *buf, PyInt lo, PyInt hi)
2397 {
2398 PyInt i;
2399 PyInt n = hi - lo;
2400 PyObject *list = PyList_New(n);
2401
2402 if (list == NULL)
2403 return NULL;
2404
2405 for (i = 0; i < n; ++i)
2406 {
2407 PyObject *str = LineToString((char *)ml_get_buf(buf, (linenr_T)(lo+i), FALSE));
2408
2409 /* Error check - was the Python string creation OK? */
2410 if (str == NULL)
2411 {
2412 Py_DECREF(list);
2413 return NULL;
2414 }
2415
2416 /* Set the list item */
2417 if (PyList_SetItem(list, i, str))
2418 {
2419 Py_DECREF(str);
2420 Py_DECREF(list);
2421 return NULL;
2422 }
2423 }
2424
2425 /* The ownership of the Python list is passed to the caller (ie,
2426 * the caller should Py_DECREF() the object when it is finished
2427 * with it).
2428 */
2429
2430 return list;
2431 }
2432
2433 /*
2434 * Check if deleting lines made the cursor position invalid.
2435 * Changed the lines from "lo" to "hi" and added "extra" lines (negative if
2436 * deleted).
2437 */
2438 static void
2439 py_fix_cursor(linenr_T lo, linenr_T hi, linenr_T extra)
2440 {
2441 if (curwin->w_cursor.lnum >= lo)
2442 {
2443 /* Adjust the cursor position if it's in/after the changed
2444 * lines. */
2445 if (curwin->w_cursor.lnum >= hi)
2446 {
2447 curwin->w_cursor.lnum += extra;
2448 check_cursor_col();
2449 }
2450 else if (extra < 0)
2451 {
2452 curwin->w_cursor.lnum = lo;
2453 check_cursor();
2454 }
2455 else
2456 check_cursor_col();
2457 changed_cline_bef_curs();
2458 }
2459 invalidate_botline();
2460 }
2461
2462 /* Replace a line in the specified buffer. The line number is
2463 * in Vim format (1-based). The replacement line is given as
2464 * a Python string object. The object is checked for validity
2465 * and correct format. Errors are returned as a value of FAIL.
2466 * The return value is OK on success.
2467 * If OK is returned and len_change is not NULL, *len_change
2468 * is set to the change in the buffer length.
2469 */
2470 static int
2471 SetBufferLine(buf_T *buf, PyInt n, PyObject *line, PyInt *len_change)
2472 {
2473 /* First of all, we check the thpe of the supplied Python object.
2474 * There are three cases:
2475 * 1. NULL, or None - this is a deletion.
2476 * 2. A string - this is a replacement.
2477 * 3. Anything else - this is an error.
2478 */
2479 if (line == Py_None || line == NULL)
2480 {
2481 buf_T *savebuf = curbuf;
2482
2483 PyErr_Clear();
2484 curbuf = buf;
2485
2486 if (u_savedel((linenr_T)n, 1L) == FAIL)
2487 PyErr_SetVim(_("cannot save undo information"));
2488 else if (ml_delete((linenr_T)n, FALSE) == FAIL)
2489 PyErr_SetVim(_("cannot delete line"));
2490 else
2491 {
2492 deleted_lines_mark((linenr_T)n, 1L);
2493 if (buf == curwin->w_buffer)
2494 py_fix_cursor((linenr_T)n, (linenr_T)n + 1, (linenr_T)-1);
2495 }
2496
2497 curbuf = savebuf;
2498
2499 if (PyErr_Occurred() || VimErrorCheck())
2500 return FAIL;
2501
2502 if (len_change)
2503 *len_change = -1;
2504
2505 return OK;
2506 }
2507 else if (PyString_Check(line))
2508 {
2509 char *save = StringToLine(line);
2510 buf_T *savebuf = curbuf;
2511
2512 if (save == NULL)
2513 return FAIL;
2514
2515 /* We do not need to free "save" if ml_replace() consumes it. */
2516 PyErr_Clear();
2517 curbuf = buf;
2518
2519 if (u_savesub((linenr_T)n) == FAIL)
2520 {
2521 PyErr_SetVim(_("cannot save undo information"));
2522 vim_free(save);
2523 }
2524 else if (ml_replace((linenr_T)n, (char_u *)save, FALSE) == FAIL)
2525 {
2526 PyErr_SetVim(_("cannot replace line"));
2527 vim_free(save);
2528 }
2529 else
2530 changed_bytes((linenr_T)n, 0);
2531
2532 curbuf = savebuf;
2533
2534 /* Check that the cursor is not beyond the end of the line now. */
2535 if (buf == curwin->w_buffer)
2536 check_cursor_col();
2537
2538 if (PyErr_Occurred() || VimErrorCheck())
2539 return FAIL;
2540
2541 if (len_change)
2542 *len_change = 0;
2543
2544 return OK;
2545 }
2546 else
2547 {
2548 PyErr_BadArgument();
2549 return FAIL;
2550 }
2551 }
2552
2553 /* Replace a range of lines in the specified buffer. The line numbers are in
2554 * Vim format (1-based). The range is from lo up to, but not including, hi.
2555 * The replacement lines are given as a Python list of string objects. The
2556 * list is checked for validity and correct format. Errors are returned as a
2557 * value of FAIL. The return value is OK on success.
2558 * If OK is returned and len_change is not NULL, *len_change
2559 * is set to the change in the buffer length.
2560 */
2561 static int
2562 SetBufferLineList(buf_T *buf, PyInt lo, PyInt hi, PyObject *list, PyInt *len_change)
2563 {
2564 /* First of all, we check the thpe of the supplied Python object.
2565 * There are three cases:
2566 * 1. NULL, or None - this is a deletion.
2567 * 2. A list - this is a replacement.
2568 * 3. Anything else - this is an error.
2569 */
2570 if (list == Py_None || list == NULL)
2571 {
2572 PyInt i;
2573 PyInt n = (int)(hi - lo);
2574 buf_T *savebuf = curbuf;
2575
2576 PyErr_Clear();
2577 curbuf = buf;
2578
2579 if (u_savedel((linenr_T)lo, (long)n) == FAIL)
2580 PyErr_SetVim(_("cannot save undo information"));
2581 else
2582 {
2583 for (i = 0; i < n; ++i)
2584 {
2585 if (ml_delete((linenr_T)lo, FALSE) == FAIL)
2586 {
2587 PyErr_SetVim(_("cannot delete line"));
2588 break;
2589 }
2590 }
2591 deleted_lines_mark((linenr_T)lo, (long)i);
2592
2593 if (buf == curwin->w_buffer)
2594 py_fix_cursor((linenr_T)lo, (linenr_T)hi, (linenr_T)-n);
2595 }
2596
2597 curbuf = savebuf;
2598
2599 if (PyErr_Occurred() || VimErrorCheck())
2600 return FAIL;
2601
2602 if (len_change)
2603 *len_change = -n;
2604
2605 return OK;
2606 }
2607 else if (PyList_Check(list))
2608 {
2609 PyInt i;
2610 PyInt new_len = PyList_Size(list);
2611 PyInt old_len = hi - lo;
2612 PyInt extra = 0; /* lines added to text, can be negative */
2613 char **array;
2614 buf_T *savebuf;
2615
2616 if (new_len == 0) /* avoid allocating zero bytes */
2617 array = NULL;
2618 else
2619 {
2620 array = (char **)alloc((unsigned)(new_len * sizeof(char *)));
2621 if (array == NULL)
2622 {
2623 PyErr_NoMemory();
2624 return FAIL;
2625 }
2626 }
2627
2628 for (i = 0; i < new_len; ++i)
2629 {
2630 PyObject *line = PyList_GetItem(list, i);
2631
2632 array[i] = StringToLine(line);
2633 if (array[i] == NULL)
2634 {
2635 while (i)
2636 vim_free(array[--i]);
2637 vim_free(array);
2638 return FAIL;
2639 }
2640 }
2641
2642 savebuf = curbuf;
2643
2644 PyErr_Clear();
2645 curbuf = buf;
2646
2647 if (u_save((linenr_T)(lo-1), (linenr_T)hi) == FAIL)
2648 PyErr_SetVim(_("cannot save undo information"));
2649
2650 /* If the size of the range is reducing (ie, new_len < old_len) we
2651 * need to delete some old_len. We do this at the start, by
2652 * repeatedly deleting line "lo".
2653 */
2654 if (!PyErr_Occurred())
2655 {
2656 for (i = 0; i < old_len - new_len; ++i)
2657 if (ml_delete((linenr_T)lo, FALSE) == FAIL)
2658 {
2659 PyErr_SetVim(_("cannot delete line"));
2660 break;
2661 }
2662 extra -= i;
2663 }
2664
2665 /* For as long as possible, replace the existing old_len with the
2666 * new old_len. This is a more efficient operation, as it requires
2667 * less memory allocation and freeing.
2668 */
2669 if (!PyErr_Occurred())
2670 {
2671 for (i = 0; i < old_len && i < new_len; ++i)
2672 if (ml_replace((linenr_T)(lo+i), (char_u *)array[i], FALSE)
2673 == FAIL)
2674 {
2675 PyErr_SetVim(_("cannot replace line"));
2676 break;
2677 }
2678 }
2679 else
2680 i = 0;
2681
2682 /* Now we may need to insert the remaining new old_len. If we do, we
2683 * must free the strings as we finish with them (we can't pass the
2684 * responsibility to vim in this case).
2685 */
2686 if (!PyErr_Occurred())
2687 {
2688 while (i < new_len)
2689 {
2690 if (ml_append((linenr_T)(lo + i - 1),
2691 (char_u *)array[i], 0, FALSE) == FAIL)
2692 {
2693 PyErr_SetVim(_("cannot insert line"));
2694 break;
2695 }
2696 vim_free(array[i]);
2697 ++i;
2698 ++extra;
2699 }
2700 }
2701
2702 /* Free any left-over old_len, as a result of an error */
2703 while (i < new_len)
2704 {
2705 vim_free(array[i]);
2706 ++i;
2707 }
2708
2709 /* Free the array of old_len. All of its contents have now
2710 * been dealt with (either freed, or the responsibility passed
2711 * to vim.
2712 */
2713 vim_free(array);
2714
2715 /* Adjust marks. Invalidate any which lie in the
2716 * changed range, and move any in the remainder of the buffer.
2717 */
2718 mark_adjust((linenr_T)lo, (linenr_T)(hi - 1),
2719 (long)MAXLNUM, (long)extra);
2720 changed_lines((linenr_T)lo, 0, (linenr_T)hi, (long)extra);
2721
2722 if (buf == curwin->w_buffer)
2723 py_fix_cursor((linenr_T)lo, (linenr_T)hi, (linenr_T)extra);
2724
2725 curbuf = savebuf;
2726
2727 if (PyErr_Occurred() || VimErrorCheck())
2728 return FAIL;
2729
2730 if (len_change)
2731 *len_change = new_len - old_len;
2732
2733 return OK;
2734 }
2735 else
2736 {
2737 PyErr_BadArgument();
2738 return FAIL;
2739 }
2740 }
2741
2742 /* Insert a number of lines into the specified buffer after the specifed line.
2743 * The line number is in Vim format (1-based). The lines to be inserted are
2744 * given as a Python list of string objects or as a single string. The lines
2745 * to be added are checked for validity and correct format. Errors are
2746 * returned as a value of FAIL. The return value is OK on success.
2747 * If OK is returned and len_change is not NULL, *len_change
2748 * is set to the change in the buffer length.
2749 */
2750 static int
2751 InsertBufferLines(buf_T *buf, PyInt n, PyObject *lines, PyInt *len_change)
2752 {
2753 /* First of all, we check the type of the supplied Python object.
2754 * It must be a string or a list, or the call is in error.
2755 */
2756 if (PyString_Check(lines))
2757 {
2758 char *str = StringToLine(lines);
2759 buf_T *savebuf;
2760
2761 if (str == NULL)
2762 return FAIL;
2763
2764 savebuf = curbuf;
2765
2766 PyErr_Clear();
2767 curbuf = buf;
2768
2769 if (u_save((linenr_T)n, (linenr_T)(n+1)) == FAIL)
2770 PyErr_SetVim(_("cannot save undo information"));
2771 else if (ml_append((linenr_T)n, (char_u *)str, 0, FALSE) == FAIL)
2772 PyErr_SetVim(_("cannot insert line"));
2773 else
2774 appended_lines_mark((linenr_T)n, 1L);
2775
2776 vim_free(str);
2777 curbuf = savebuf;
2778 update_screen(VALID);
2779
2780 if (PyErr_Occurred() || VimErrorCheck())
2781 return FAIL;
2782
2783 if (len_change)
2784 *len_change = 1;
2785
2786 return OK;
2787 }
2788 else if (PyList_Check(lines))
2789 {
2790 PyInt i;
2791 PyInt size = PyList_Size(lines);
2792 char **array;
2793 buf_T *savebuf;
2794
2795 array = (char **)alloc((unsigned)(size * sizeof(char *)));
2796 if (array == NULL)
2797 {
2798 PyErr_NoMemory();
2799 return FAIL;
2800 }
2801
2802 for (i = 0; i < size; ++i)
2803 {
2804 PyObject *line = PyList_GetItem(lines, i);
2805 array[i] = StringToLine(line);
2806
2807 if (array[i] == NULL)
2808 {
2809 while (i)
2810 vim_free(array[--i]);
2811 vim_free(array);
2812 return FAIL;
2813 }
2814 }
2815
2816 savebuf = curbuf;
2817
2818 PyErr_Clear();
2819 curbuf = buf;
2820
2821 if (u_save((linenr_T)n, (linenr_T)(n + 1)) == FAIL)
2822 PyErr_SetVim(_("cannot save undo information"));
2823 else
2824 {
2825 for (i = 0; i < size; ++i)
2826 {
2827 if (ml_append((linenr_T)(n + i),
2828 (char_u *)array[i], 0, FALSE) == FAIL)
2829 {
2830 PyErr_SetVim(_("cannot insert line"));
2831
2832 /* Free the rest of the lines */
2833 while (i < size)
2834 vim_free(array[i++]);
2835
2836 break;
2837 }
2838 vim_free(array[i]);
2839 }
2840 if (i > 0)
2841 appended_lines_mark((linenr_T)n, (long)i);
2842 }
2843
2844 /* Free the array of lines. All of its contents have now
2845 * been freed.
2846 */
2847 vim_free(array);
2848
2849 curbuf = savebuf;
2850 update_screen(VALID);
2851
2852 if (PyErr_Occurred() || VimErrorCheck())
2853 return FAIL;
2854
2855 if (len_change)
2856 *len_change = size;
2857
2858 return OK;
2859 }
2860 else
2861 {
2862 PyErr_BadArgument();
2863 return FAIL;
2864 }
2865 }
2866
2867 /* Convert a Vim line into a Python string.
2868 * All internal newlines are replaced by null characters.
2869 *
2870 * On errors, the Python exception data is set, and NULL is returned.
2871 */
2872 static PyObject *
2873 LineToString(const char *str)
2874 {
2875 PyObject *result;
2876 PyInt len = strlen(str);
2877 char *p;
2878
2879 /* Allocate an Python string object, with uninitialised contents. We
2880 * must do it this way, so that we can modify the string in place
2881 * later. See the Python source, Objects/stringobject.c for details.
2882 */
2883 result = PyString_FromStringAndSize(NULL, len);
2884 if (result == NULL)
2885 return NULL;
2886
2887 p = PyString_AsString(result);
2888
2889 while (*str)
2890 {
2891 if (*str == '\n')
2892 *p = '\0';
2893 else
2894 *p = *str;
2895
2896 ++p;
2897 ++str;
2898 }
2899
2900 return result;
2901 }
2902
2903 /* Convert a Python string into a Vim line.
2904 *
2905 * The result is in allocated memory. All internal nulls are replaced by
2906 * newline characters. It is an error for the string to contain newline
2907 * characters.
2908 *
2909 * On errors, the Python exception data is set, and NULL is returned.
2910 */
2911 static char *
2912 StringToLine(PyObject *obj)
2913 {
2914 const char *str;
2915 char *save;
2916 PyInt len;
2917 PyInt i;
2918 char *p;
2919
2920 if (obj == NULL || !PyString_Check(obj))
2921 {
2922 PyErr_BadArgument();
2923 return NULL;
2924 }
2925
2926 str = PyString_AsString(obj);
2927 len = PyString_Size(obj);
2928
2929 /*
2930 * Error checking: String must not contain newlines, as we
2931 * are replacing a single line, and we must replace it with
2932 * a single line.
2933 * A trailing newline is removed, so that append(f.readlines()) works.
2934 */
2935 p = memchr(str, '\n', len);
2936 if (p != NULL)
2937 {
2938 if (p == str + len - 1)
2939 --len;
2940 else
2941 {
2942 PyErr_SetVim(_("string cannot contain newlines"));
2943 return NULL;
2944 }
2945 }
2946
2947 /* Create a copy of the string, with internal nulls replaced by
2948 * newline characters, as is the vim convention.
2949 */
2950 save = (char *)alloc((unsigned)(len+1));
2951 if (save == NULL)
2952 {
2953 PyErr_NoMemory();
2954 return NULL;
2955 }
2956
2957 for (i = 0; i < len; ++i)
2958 {
2959 if (str[i] == '\0')
2960 save[i] = '\n';
2961 else
2962 save[i] = str[i];
2963 }
2964
2965 save[i] = '\0';
2966
2967 return save;
2968 }
2969
2970 /* Check to see whether a Vim error has been reported, or a keyboard
2971 * interrupt has been detected.
2972 */
2973 static int
2974 VimErrorCheck(void)
2975 {
2976 if (got_int)
2977 {
2978 PyErr_SetNone(PyExc_KeyboardInterrupt);
2979 return 1;
2980 }
2981 else if (did_emsg && !PyErr_Occurred())
2982 {
2983 PyErr_SetNone(VimError);
2984 return 1;
2985 }
2986
2987 return 0;
2988 }
2989
2990
2991 /* Don't generate a prototype for the next function, it generates an error on
2992 * newer Python versions. */
2993 #if PYTHON_API_VERSION < 1007 /* Python 1.4 */ && !defined(PROTO)
2994
2995 char *
2996 Py_GetProgramName(void)
2997 {
2998 return "vim";
2999 }
3000 #endif /* Python 1.4 */
Vim for the Mac