if_python.c
资源名称:vim53src.zip [点击查看]
上传用户:gddssl
上传日期:2007-01-06
资源大小:1003k
文件大小:53k
源码类别:
编辑器/阅读器
开发平台:
DOS
- /* 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.
- */
- /*
- * 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 <stdio.h>
- #include <stdarg.h>
- #include <limits.h>
- #include <Python.h>
- #ifdef macintosh
- # include "macglue.h"
- #endif
- #undef main /* Defined in python.h - aargh */
- #undef HAVE_FCNTL_H /* Clash with os_win32.h */
- /* Parser flags */
- #define single_input 256
- #define file_input 257
- #define eval_input 258
- #include "vim.h"
- /******************************************************
- * Internal function prototypes.
- */
- static int DoPythonCommand(EXARG *, 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 *, int);
- static PyObject *GetBufferLineList(BUF *, int, int);
- static int SetBufferLine(BUF *, int, PyObject *, int *);
- static int SetBufferLineList(BUF *, int, int, PyObject *, int *);
- static int InsertBufferLines(BUF *, 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 /* Python 1.4 */
- static PyThreadState* saved_python_thread = NULL;
- /* suspend a thread of the python interpreter
- - other threads are allowed to run */
- static void Python_SaveThread() {
- saved_python_thread = PyEval_SaveThread();
- }
- /* restore a thread of the python interpreter
- - waits for other threads to block */
- static void Python_RestoreThread() {
- PyEval_RestoreThread( saved_python_thread );
- saved_python_thread = NULL;
- }
- /* obtain a lock on the Vim data structures */
- static void Python_Lock_Vim() {
- }
- /* release a lock on the Vim data structures */
- static void Python_Release_Vim() {
- }
- static int
- Python_Init(void)
- {
- if (!initialised)
- {
- #ifndef macintosh
- Py_Initialize();
- #else
- PyMac_Initialize();
- #endif
- if (PythonIO_Init())
- goto fail;
- if (PythonMod_Init())
- goto fail;
- /* the first python thread is vim's */
- 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 int
- DoPythonCommand(EXARG *eap, const char *cmd)
- {
- #ifdef macintosh
- GrafPtr oldPort;
- GetPort (&oldPort);
- #endif
- if (Python_Init())
- return FAIL;
- RangeStart = eap->line1;
- RangeEnd = eap->line2;
- Python_Release_Vim(); /* leave vim */
- Python_RestoreThread(); /* enter python */
- PyRun_SimpleString((char *)(cmd));
- Python_SaveThread(); /* leave python */
- Python_Lock_Vim(); /* enter vim */
- PythonIO_Flush();
- #ifdef macintosh
- SetPort (oldPort);
- #endif
- return OK;
- }
- int
- do_python(EXARG *eap)
- {
- return DoPythonCommand(eap, (char *)eap->arg);
- }
- #define BUFFER_SIZE 1024
- int
- do_pyfile(EXARG *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 != ' ')
- return FAIL;
- /* Put in the terminating "')" and a null */
- *p++ = ''';
- *p++ = ')';
- *p++ = ' ';
- /* Execute the file */
- return 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)
- {
- EMSG("Out of memory!");
- 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 *)(&Output));
- PySys_SetObject("stderr", (PyObject *)(&Error));
- if (PyErr_Occurred())
- {
- EMSG("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 *win;
- }
- WindowObject;
- #define INVALID_WINDOW_VALUE ((WIN*)(-1))
- #define WindowType_Check(obj) ((obj)->ob_type == &WindowType)
- static PyObject *WindowNew(WIN *);
- 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 *buf;
- }
- BufferObject;
- #define INVALID_BUFFER_VALUE ((BUF*)(-1))
- #define BufferType_Check(obj) ((obj)->ob_type == &BufferType)
- static PyObject *BufferNew (BUF *);
- 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
- * --------------------------------------
- */
- typedef struct
- {
- PyObject_HEAD
- BufferObject *buf;
- int start;
- int end;
- }
- RangeObject;
- #define RangeType_Check(obj) ((obj)->ob_type == &RangeType)
- static PyObject *RangeNew(BUF *, int, int);
- static void RangeDestructor(PyObject *);
- static PyObject *RangeGetattr(PyObject *, char *);
- static PyObject *RangeRepr(PyObject *);
- static int RangeLength(PyObject *);
- static PyObject *RangeItem(PyObject *, int);
- static PyObject *RangeSlice(PyObject *, int, int);
- static int RangeAssItem(PyObject *, int, PyObject *);
- static int RangeAssSlice(PyObject *, int, int, PyObject *);
- static PyObject *RangeAppend(PyObject *, PyObject *);
- /* Window list type - Implementation functions
- * -------------------------------------------
- */
- static int WinListLength(PyObject *);
- static PyObject *WinListItem(PyObject *, int);
- /* Buffer list type - Implementation functions
- * -------------------------------------------
- */
- static int BufListLength(PyObject *);
- static PyObject *BufListItem(PyObject *, int);
- /* Current objects type - Implementation functions
- * -----------------------------------------------
- */
- static PyObject *CurrentGetattr(PyObject *, char *);
- static int CurrentSetattr(PyObject *, char *, PyObject *);
- /* Vim module - Definitions
- */
- static struct PyMethodDef VimMethods[] = {
- /* name, function, calling, documentation */
- {"command", VimCommand, 1, "" },
- {"eval", VimEval, 1, "" },
- { NULL, NULL, 0, NULL }
- };
- /* Vim module - Implementation
- */
- /*ARGSUSED*/
- static PyObject *
- VimCommand(PyObject *self, PyObject *args)
- {
- char *cmd;
- PyObject *result;
- if (!PyArg_ParseTuple(args, "s", &cmd))
- return NULL;
- PyErr_Clear();
- Py_BEGIN_ALLOW_THREADS
- Python_Lock_Vim();
- do_cmdline((char_u *)cmd, NULL, NULL, DOCMD_NOWAIT|DOCMD_VERBOSE);
- update_screen(NOT_VALID);
- Python_Release_Vim();
- Py_END_ALLOW_THREADS
- if (VimErrorCheck())
- result = NULL;
- else
- result = Py_None;
- Py_XINCREF(result);
- return result;
- }
- /*ARGSUSED*/
- static PyObject *
- VimEval(PyObject *self, PyObject *args)
- {
- char *expr;
- char *str;
- PyObject *result;
- if (!PyArg_ParseTuple(args, "s", &expr))
- return NULL;
- #ifdef WANT_EVAL
- Py_BEGIN_ALLOW_THREADS
- Python_Lock_Vim();
- str = (char *)eval_to_string((char_u *)expr, NULL);
- Python_Release_Vim();
- Py_END_ALLOW_THREADS
- if (str == NULL)
- {
- PyErr_SetVim("invalid expression");
- return NULL;
- }
- #else
- PyErr_SetVim("expressions disabled at compile time");
- return NULL;
- #endif
- result = Py_BuildValue("s", str);
- Py_BEGIN_ALLOW_THREADS
- Python_Lock_Vim();
- vim_free(str);
- Python_Release_Vim();
- Py_END_ALLOW_THREADS
- return result;
- }
- /* Common routines for buffers and line ranges
- * -------------------------------------------
- */
- static int
- CheckBuffer(BufferObject *this)
- {
- if (this->buf == INVALID_BUFFER_VALUE)
- {
- PyErr_SetVim("attempt to refer to deleted buffer");
- return -1;
- }
- return 0;
- }
- static PyObject *
- RBItem(BufferObject *self, int n, int start, int end)
- {
- if (CheckBuffer(self))
- return NULL;
- if (n < 0 || n > end - start)
- {
- PyErr_SetString(PyExc_IndexError, "line number out of range");
- return NULL;
- }
- return GetBufferLine(self->buf, n+start);
- }
- static PyObject *
- RBSlice(BufferObject *self, int lo, int hi, int start, int end)
- {
- int size;
- if (CheckBuffer(self))
- return NULL;
- size = end - start + 1;
- if (lo < 0)
- lo = 0;
- else if (lo > size)
- lo = size;
- if (hi < 0)
- hi = 0;
- if (hi < lo)
- hi = lo;
- else if (hi > size)
- hi = size;
- return GetBufferLineList(self->buf, lo+start, hi+start);
- }
- static int
- RBAssItem(BufferObject *self, int n, PyObject *val, int start, int end, int *new_end)
- {
- int len_change;
- if (CheckBuffer(self))
- return -1;
- if (n < 0 || n > end - start)
- {
- PyErr_SetString(PyExc_IndexError, "line number out of range");
- return -1;
- }
- if (SetBufferLine(self->buf, n+start, val, &len_change) == FAIL)
- return -1;
- if (new_end)
- *new_end = end + len_change;
- return 0;
- }
- static int
- RBAssSlice(BufferObject *self, int lo, int hi, PyObject *val, int start, int end, int *new_end)
- {
- int size;
- int len_change;
- /* Self must be a valid buffer */
- if (CheckBuffer(self))
- return -1;
- /* Sort out the slice range */
- size = end - start + 1;
- if (lo < 0)
- lo = 0;
- else if (lo > size)
- lo = size;
- if (hi < 0)
- hi = 0;
- if (hi < lo)
- hi = lo;
- else if (hi > size)
- hi = size;
- if (SetBufferLineList(self->buf, lo+start, hi+start, val, &len_change) == FAIL)
- return -1;
- if (new_end)
- *new_end = end + len_change;
- return 0;
- }
- static PyObject *
- RBAppend(BufferObject *self, PyObject *args, int start, int end, int *new_end)
- {
- PyObject *lines;
- int len_change;
- int max;
- int n;
- if (CheckBuffer(self))
- return NULL;
- max = n = end - start + 1;
- if (!PyArg_ParseTuple(args, "O|i", &lines, &n))
- return NULL;
- if (n < 0 || n > max)
- {
- PyErr_SetString(PyExc_ValueError, "line number out of range");
- return NULL;
- }
- if (InsertBufferLines(self->buf, n + start - 1, lines, &len_change) == FAIL)
- return NULL;
- if (new_end)
- *new_end = end + len_change;
- Py_INCREF(Py_None);
- return Py_None;
- }
- /* Buffer object - Definitions
- */
- static struct PyMethodDef BufferMethods[] = {
- /* name, function, calling, documentation */
- {"append", BufferAppend, 1, "" },
- {"mark", BufferMark, 1, "" },
- {"range", BufferRange, 1, "" },
- { NULL, NULL, 0, NULL }
- };
- static PySequenceMethods BufferAsSeq = {
- (inquiry) BufferLength, /* sq_length, len(x) */
- (binaryfunc) 0, /* BufferConcat, */ /* sq_concat, x+y */
- (intargfunc) 0, /* BufferRepeat, */ /* sq_repeat, x*n */
- (intargfunc) BufferItem, /* sq_item, x[i] */
- (intintargfunc) BufferSlice, /* sq_slice, x[i:j] */
- (intobjargproc) BufferAssItem, /* sq_ass_item, x[i]=v */
- (intintobjargproc) BufferAssSlice, /* sq_ass_slice, x[i:j]=v */
- };
- static PyTypeObject BufferType = {
- PyObject_HEAD_INIT(0)
- 0,
- "buffer",
- sizeof(BufferObject),
- 0,
- (destructor) BufferDestructor, /* tp_dealloc, refcount==0 */
- (printfunc) 0, /* tp_print, print x */
- (getattrfunc) BufferGetattr, /* tp_getattr, x.attr */
- (setattrfunc) 0, /* tp_setattr, x.attr=v */
- (cmpfunc) 0, /* tp_compare, x>y */
- (reprfunc) BufferRepr, /* tp_repr, `x`, print x */
- 0, /* as number */
- &BufferAsSeq, /* as sequence */
- 0, /* as mapping */
- (hashfunc) 0, /* tp_hash, dict(x) */
- (ternaryfunc) 0, /* tp_call, x() */
- (reprfunc) 0, /* tp_str, str(x) */
- };
- /* Buffer object - Implementation
- */
- static PyObject *
- BufferNew(BUF *buf)
- {
- /* We need to handle deletion of buffers underneath us.
- * If we add a "python_ref" field to the BUF structure,
- * then we can get at it in buf_freeall() in vim. We then
- * need to create only ONE Python object per buffer - if
- * we try to create a second, just INCREF the existing one
- * and return it. The (single) Python object referring to
- * the buffer is stored in "python_ref".
- * Question: what to do on a buf_freeall(). We'll probably
- * have to either delete the Python object (DECREF it to
- * zero - a bad idea, as it leaves dangling refs!) or
- * set the BUF* value to an invalid value (-1?), which
- * means we need checks in all access functions... Bah.
- */
- BufferObject *self;
- if (buf->python_ref)
- self = buf->python_ref;
- else
- {
- self = PyObject_NEW(BufferObject, &BufferType);
- if (self == NULL)
- return NULL;
- self->buf = buf;
- buf->python_ref = self;
- }
- return (PyObject *)(self);
- }
- static void
- BufferDestructor(PyObject *self)
- {
- BufferObject *this = (BufferObject *)(self);
- if (this->buf && this->buf != INVALID_BUFFER_VALUE)
- this->buf->python_ref = NULL;
- PyMem_DEL(self);
- }
- static PyObject *
- BufferGetattr(PyObject *self, char *name)
- {
- BufferObject *this = (BufferObject *)(self);
- if (CheckBuffer(this))
- return NULL;
- if (strcmp(name, "name") == 0)
- return Py_BuildValue("s",this->buf->b_ffname);
- else if (strcmp(name,"__members__") == 0)
- return Py_BuildValue("[s]", "name");
- else
- return Py_FindMethod(BufferMethods, self, name);
- }
- static PyObject *
- BufferRepr(PyObject *self)
- {
- static char repr[50];
- BufferObject *this = (BufferObject *)(self);
- if (this->buf == INVALID_BUFFER_VALUE)
- {
- sprintf(repr, "<buffer object (deleted) at %8lX>", (long)(self));
- return PyString_FromString(repr);
- }
- else
- {
- char *name = (char *)this->buf->b_fname;
- int len = strlen(name);
- if (len > 35)
- name = name + (35 - len);
- sprintf(repr, "<buffer %s%s>", len > 35 ? "..." : "", name);
- return PyString_FromString(repr);
- }
- }
- /******************/
- static int
- BufferLength(PyObject *self)
- {
- /* HOW DO WE SIGNAL AN ERROR FROM THIS FUNCTION? */
- if (CheckBuffer((BufferObject *)(self)))
- return -1; /* ??? */
- return (((BufferObject *)(self))->buf->b_ml.ml_line_count);
- }
- static PyObject *
- BufferItem(PyObject *self, int n)
- {
- return RBItem((BufferObject *)(self), n, 1,
- (int)((BufferObject *)(self))->buf->b_ml.ml_line_count);
- }
- static PyObject *
- BufferSlice(PyObject *self, int lo, int hi)
- {
- return RBSlice((BufferObject *)(self), lo, hi, 1,
- (int)((BufferObject *)(self))->buf->b_ml.ml_line_count);
- }
- static int
- BufferAssItem(PyObject *self, int n, PyObject *val)
- {
- return RBAssItem((BufferObject *)(self), n, val, 1,
- (int)((BufferObject *)(self))->buf->b_ml.ml_line_count,
- NULL);
- }
- static int
- BufferAssSlice(PyObject *self, int lo, int hi, PyObject *val)
- {
- return RBAssSlice((BufferObject *)(self), lo, hi, val, 1,
- (int)((BufferObject *)(self))->buf->b_ml.ml_line_count,
- NULL);
- }
- static PyObject *
- BufferAppend(PyObject *self, PyObject *args)
- {
- return RBAppend((BufferObject *)(self), args, 1,
- (int)((BufferObject *)(self))->buf->b_ml.ml_line_count,
- NULL);
- }
- static PyObject *
- BufferMark(PyObject *self, PyObject *args)
- {
- FPOS *posp;
- char mark;
- BUF *curbuf_save;
- if (CheckBuffer((BufferObject *)(self)))
- return NULL;
- if (!PyArg_ParseTuple(args, "c", &mark))
- return NULL;
- curbuf_save = curbuf;
- curbuf = ((BufferObject *)(self))->buf;
- posp = getmark(mark, FALSE);
- curbuf = curbuf_save;
- if (posp == NULL)
- {
- PyErr_SetVim("invalid mark name");
- return NULL;
- }
- /* Ckeck for keyboard interrupt */
- if (VimErrorCheck())
- return NULL;
- if (posp->lnum == 0)
- {
- /* Or raise an error? */
- Py_INCREF(Py_None);
- return Py_None;
- }
- return Py_BuildValue("(ll)", (long)(posp->lnum), (long)(posp->col));
- }
- static PyObject *
- BufferRange(PyObject *self, PyObject *args)
- {
- int start;
- int end;
- if (CheckBuffer((BufferObject *)(self)))
- return NULL;
- if (!PyArg_ParseTuple(args, "ii", &start, &end))
- return NULL;
- return RangeNew(((BufferObject *)(self))->buf, start, end);
- }
- /* Line range object - Definitions
- */
- static struct PyMethodDef RangeMethods[] = {
- /* name, function, calling, documentation */
- {"append", RangeAppend, 1, "" },
- { NULL, NULL, 0, NULL }
- };
- static PySequenceMethods RangeAsSeq = {
- (inquiry) RangeLength, /* sq_length, len(x) */
- (binaryfunc) 0, /* RangeConcat, */ /* sq_concat, x+y */
- (intargfunc) 0, /* RangeRepeat, */ /* sq_repeat, x*n */
- (intargfunc) RangeItem, /* sq_item, x[i] */
- (intintargfunc) RangeSlice, /* sq_slice, x[i:j] */
- (intobjargproc) RangeAssItem, /* sq_ass_item, x[i]=v */
- (intintobjargproc) RangeAssSlice, /* sq_ass_slice, x[i:j]=v */
- };
- static PyTypeObject RangeType = {
- PyObject_HEAD_INIT(0)
- 0,
- "range",
- sizeof(RangeObject),
- 0,
- (destructor) RangeDestructor, /* tp_dealloc, refcount==0 */
- (printfunc) 0, /* tp_print, print x */
- (getattrfunc) RangeGetattr, /* tp_getattr, x.attr */
- (setattrfunc) 0, /* tp_setattr, x.attr=v */
- (cmpfunc) 0, /* tp_compare, x>y */
- (reprfunc) RangeRepr, /* tp_repr, `x`, print x */
- 0, /* as number */
- &RangeAsSeq, /* as sequence */
- 0, /* as mapping */
- (hashfunc) 0, /* tp_hash, dict(x) */
- (ternaryfunc) 0, /* tp_call, x() */
- (reprfunc) 0, /* tp_str, str(x) */
- };
- /* Line range object - Implementation
- */
- static PyObject *
- RangeNew(BUF *buf, int start, int end)
- {
- BufferObject *bufr;
- RangeObject *self;
- self = PyObject_NEW(RangeObject, &RangeType);
- if (self == NULL)
- return NULL;
- bufr = (BufferObject *)BufferNew(buf);
- if (bufr == NULL)
- {
- PyMem_DEL(self);
- return NULL;
- }
- Py_INCREF(bufr);
- self->buf = bufr;
- self->start = start;
- self->end = end;
- return (PyObject *)(self);
- }
- static void
- RangeDestructor(PyObject *self)
- {
- Py_DECREF(((RangeObject *)(self))->buf);
- PyMem_DEL(self);
- }
- static PyObject *
- RangeGetattr(PyObject *self, char *name)
- {
- return Py_FindMethod(RangeMethods, self, name);
- }
- static PyObject *
- RangeRepr(PyObject *self)
- {
- static char repr[75];
- RangeObject *this = (RangeObject *)(self);
- if (this->buf->buf == INVALID_BUFFER_VALUE)
- {
- sprintf(repr, "<range object (for deleted buffer) at %8lX>",
- (long)(self));
- return PyString_FromString(repr);
- }
- else
- {
- char *name = (char *)this->buf->buf->b_fname;
- int len = strlen(name);
- if (len > 45)
- name = name + (45 - len);
- sprintf(repr, "<range %s%s (%d:%d)>",
- len > 45 ? "..." : "", name,
- this->start, this->end);
- return PyString_FromString(repr);
- }
- }
- /****************/
- static int
- RangeLength(PyObject *self)
- {
- /* HOW DO WE SIGNAL AN ERROR FROM THIS FUNCTION? */
- if (CheckBuffer(((RangeObject *)(self))->buf))
- return -1; /* ??? */
- return (((RangeObject *)(self))->end - ((RangeObject *)(self))->start + 1);
- }
- static PyObject *
- RangeItem(PyObject *self, int n)
- {
- return RBItem(((RangeObject *)(self))->buf, n,
- ((RangeObject *)(self))->start,
- ((RangeObject *)(self))->end);
- }
- static PyObject *
- RangeSlice(PyObject *self, int lo, int hi)
- {
- return RBSlice(((RangeObject *)(self))->buf, lo, hi,
- ((RangeObject *)(self))->start,
- ((RangeObject *)(self))->end);
- }
- static int
- RangeAssItem(PyObject *self, int n, PyObject *val)
- {
- return RBAssItem(((RangeObject *)(self))->buf, n, val,
- ((RangeObject *)(self))->start,
- ((RangeObject *)(self))->end,
- &((RangeObject *)(self))->end);
- }
- static int
- RangeAssSlice(PyObject *self, int lo, int hi, PyObject *val)
- {
- return RBAssSlice(((RangeObject *)(self))->buf, lo, hi, val,
- ((RangeObject *)(self))->start,
- ((RangeObject *)(self))->end,
- &((RangeObject *)(self))->end);
- }
- static PyObject *
- RangeAppend(PyObject *self, PyObject *args)
- {
- return RBAppend(((RangeObject *)(self))->buf, args,
- ((RangeObject *)(self))->start,
- ((RangeObject *)(self))->end,
- &((RangeObject *)(self))->end);
- }
- /* Buffer list object - Definitions
- */
- typedef struct
- {
- PyObject_HEAD
- }
- BufListObject;
- static PySequenceMethods BufListAsSeq = {
- (inquiry) BufListLength, /* sq_length, len(x) */
- (binaryfunc) 0, /* sq_concat, x+y */
- (intargfunc) 0, /* sq_repeat, x*n */
- (intargfunc) BufListItem, /* sq_item, x[i] */
- (intintargfunc) 0, /* sq_slice, x[i:j] */
- (intobjargproc) 0, /* sq_ass_item, x[i]=v */
- (intintobjargproc) 0, /* sq_ass_slice, x[i:j]=v */
- };
- static PyTypeObject BufListType = {
- PyObject_HEAD_INIT(0)
- 0,
- "buffer list",
- sizeof(BufListObject),
- 0,
- (destructor) 0, /* tp_dealloc, refcount==0 */
- (printfunc) 0, /* tp_print, print x */
- (getattrfunc) 0, /* tp_getattr, x.attr */
- (setattrfunc) 0, /* tp_setattr, x.attr=v */
- (cmpfunc) 0, /* tp_compare, x>y */
- (reprfunc) 0, /* tp_repr, `x`, print x */
- 0, /* as number */
- &BufListAsSeq, /* as sequence */
- 0, /* as mapping */
- (hashfunc) 0, /* tp_hash, dict(x) */
- (ternaryfunc) 0, /* tp_call, x() */
- (reprfunc) 0, /* tp_str, str(x) */
- };
- /* Buffer list object - Implementation
- */
- /*ARGSUSED*/
- static int
- BufListLength(PyObject *self)
- {
- BUF *b = firstbuf;
- int n = 0;
- while (b)
- {
- ++n;
- b = b->b_next;
- }
- return n;
- }
- /*ARGSUSED*/
- static PyObject *
- BufListItem(PyObject *self, int n)
- {
- BUF *b;
- for (b = firstbuf; b; b = b->b_next, --n)
- {
- if (n == 0)
- return BufferNew(b);
- }
- PyErr_SetString(PyExc_IndexError, "no such buffer");
- return NULL;
- }
- /* Window object - Definitions
- */
- static struct PyMethodDef WindowMethods[] = {
- /* name, function, calling, documentation */
- { NULL, NULL, 0, NULL }
- };
- static PyTypeObject WindowType = {
- PyObject_HEAD_INIT(0)
- 0,
- "window",
- sizeof(WindowObject),
- 0,
- (destructor) WindowDestructor, /* tp_dealloc, refcount==0 */
- (printfunc) 0, /* tp_print, print x */
- (getattrfunc) WindowGetattr, /* tp_getattr, x.attr */
- (setattrfunc) WindowSetattr, /* tp_setattr, x.attr=v */
- (cmpfunc) 0, /* tp_compare, x>y */
- (reprfunc) WindowRepr, /* tp_repr, `x`, print x */
- 0, /* as number */
- 0, /* as sequence */
- 0, /* as mapping */
- (hashfunc) 0, /* tp_hash, dict(x) */
- (ternaryfunc) 0, /* tp_call, x() */
- (reprfunc) 0, /* tp_str, str(x) */
- };
- /* Window object - Implementation
- */
- static PyObject *
- WindowNew(WIN *win)
- {
- /* We need to handle deletion of windows underneath us.
- * If we add a "python_ref" field to the WIN structure,
- * then we can get at it in win_free() in vim. We then
- * need to create only ONE Python object per window - if
- * we try to create a second, just INCREF the existing one
- * and return it. The (single) Python object referring to
- * the window is stored in "python_ref".
- * On a win_free() we set the Python object's WIN* field
- * to an invalid value. We trap all uses of a window
- * object, and reject them if the WIN* field is invalid.
- */
- WindowObject *self;
- if (win->python_ref)
- self = win->python_ref;
- else
- {
- self = PyObject_NEW(WindowObject, &WindowType);
- if (self == NULL)
- return NULL;
- self->win = win;
- win->python_ref = self;
- }
- return (PyObject *)(self);
- }
- static void
- WindowDestructor(PyObject *self)
- {
- WindowObject *this = (WindowObject *)(self);
- if (this->win && this->win != INVALID_WINDOW_VALUE)
- this->win->python_ref = NULL;
- PyMem_DEL(self);
- }
- static int
- CheckWindow(WindowObject *this)
- {
- if (this->win == INVALID_WINDOW_VALUE)
- {
- PyErr_SetVim("attempt to refer to deleted window");
- return -1;
- }
- return 0;
- }
- static PyObject *
- WindowGetattr(PyObject *self, char *name)
- {
- WindowObject *this = (WindowObject *)(self);
- if (CheckWindow(this))
- return NULL;
- if (strcmp(name, "buffer") == 0)
- return (PyObject *)BufferNew(this->win->w_buffer);
- else if (strcmp(name, "cursor") == 0)
- {
- FPOS *pos = &this->win->w_cursor;
- return Py_BuildValue("(ll)", (long)(pos->lnum), (long)(pos->col));
- }
- else if (strcmp(name, "height") == 0)
- return Py_BuildValue("l", (long)(this->win->w_height));
- else if (strcmp(name,"__members__") == 0)
- return Py_BuildValue("[sss]", "buffer", "cursor", "height");
- else
- return Py_FindMethod(WindowMethods, self, name);
- }
- static int
- WindowSetattr(PyObject *self, char *name, PyObject *val)
- {
- WindowObject *this = (WindowObject *)(self);
- if (CheckWindow(this))
- return -1;
- if (strcmp(name, "buffer") == 0)
- {
- PyErr_SetString(PyExc_TypeError, "readonly attribute");
- return -1;
- }
- else if (strcmp(name, "cursor") == 0)
- {
- long lnum;
- long col;
- if (!PyArg_Parse(val, "(ll)", &lnum, &col))
- return -1;
- if (lnum <= 0 || lnum > this->win->w_buffer->b_ml.ml_line_count)
- {
- PyErr_SetVim("cursor position outside buffer");
- return -1;
- }
- /* Check for keyboard interrupts */
- if (VimErrorCheck())
- return -1;
- /* NO CHECK ON COLUMN - SEEMS NOT TO MATTER */
- this->win->w_cursor.lnum = lnum;
- this->win->w_cursor.col = col;
- update_screen(NOT_VALID);
- return 0;
- }
- else if (strcmp(name, "height") == 0)
- {
- int height;
- WIN *savewin;
- if (!PyArg_Parse(val, "i", &height))
- return -1;
- #ifdef USE_GUI
- need_mouse_correct = TRUE;
- #endif
- savewin = curwin;
- curwin = this->win;
- win_setheight(height);
- curwin = savewin;
- /* Check for keyboard interrupts */
- if (VimErrorCheck())
- return -1;
- return 0;
- }
- else
- {
- PyErr_SetString(PyExc_AttributeError, name);
- return -1;
- }
- }
- static PyObject *
- WindowRepr(PyObject *self)
- {
- static char repr[50];
- WindowObject *this = (WindowObject *)(self);
- if (this->win == INVALID_WINDOW_VALUE)
- {
- sprintf(repr, "<window object (deleted) at %.8lX>", (long)(self));
- return PyString_FromString(repr);
- }
- else
- {
- int i = 0;
- WIN *w;
- for (w = firstwin; w != NULL && w != this->win; w = w->w_next)
- ++i;
- if (w == NULL)
- sprintf(repr, "<window object (unknown) at %.8lX>", (long)(self));
- else
- sprintf(repr, "<window %d>", i);
- return PyString_FromString(repr);
- }
- }
- /* Window list object - Definitions
- */
- typedef struct
- {
- PyObject_HEAD
- }
- WinListObject;
- static PySequenceMethods WinListAsSeq = {
- (inquiry) WinListLength, /* sq_length, len(x) */
- (binaryfunc) 0, /* sq_concat, x+y */
- (intargfunc) 0, /* sq_repeat, x*n */
- (intargfunc) WinListItem, /* sq_item, x[i] */
- (intintargfunc) 0, /* sq_slice, x[i:j] */
- (intobjargproc) 0, /* sq_ass_item, x[i]=v */
- (intintobjargproc) 0, /* sq_ass_slice, x[i:j]=v */
- };
- static PyTypeObject WinListType = {
- PyObject_HEAD_INIT(0)
- 0,
- "window list",
- sizeof(WinListObject),
- 0,
- (destructor) 0, /* tp_dealloc, refcount==0 */
- (printfunc) 0, /* tp_print, print x */
- (getattrfunc) 0, /* tp_getattr, x.attr */
- (setattrfunc) 0, /* tp_setattr, x.attr=v */
- (cmpfunc) 0, /* tp_compare, x>y */
- (reprfunc) 0, /* tp_repr, `x`, print x */
- 0, /* as number */
- &WinListAsSeq, /* as sequence */
- 0, /* as mapping */
- (hashfunc) 0, /* tp_hash, dict(x) */
- (ternaryfunc) 0, /* tp_call, x() */
- (reprfunc) 0, /* tp_str, str(x) */
- };
- /* Window list object - Implementation
- */
- /*ARGSUSED*/
- static int
- WinListLength(PyObject *self)
- {
- WIN *w = firstwin;
- int n = 0;
- while (w)
- {
- ++n;
- w = w->w_next;
- }
- return n;
- }
- /*ARGSUSED*/
- static PyObject *
- WinListItem(PyObject *self, int n)
- {
- WIN *w;
- for (w = firstwin; w; w = w->w_next, --n)
- {
- if (n == 0)
- return WindowNew(w);
- }
- PyErr_SetString(PyExc_IndexError, "no such window");
- return NULL;
- }
- /* Current items object - Definitions
- */
- typedef struct
- {
- PyObject_HEAD
- }
- CurrentObject;
- static PyTypeObject CurrentType = {
- PyObject_HEAD_INIT(0)
- 0,
- "current data",
- sizeof(CurrentObject),
- 0,
- (destructor) 0, /* tp_dealloc, refcount==0 */
- (printfunc) 0, /* tp_print, print x */
- (getattrfunc) CurrentGetattr, /* tp_getattr, x.attr */
- (setattrfunc) CurrentSetattr, /* tp_setattr, x.attr=v */
- (cmpfunc) 0, /* tp_compare, x>y */
- (reprfunc) 0, /* tp_repr, `x`, print x */
- 0, /* as number */
- 0, /* as sequence */
- 0, /* as mapping */
- (hashfunc) 0, /* tp_hash, dict(x) */
- (ternaryfunc) 0, /* tp_call, x() */
- (reprfunc) 0, /* tp_str, str(x) */
- };
- /* Current items object - Implementation
- */
- /*ARGSUSED*/
- static PyObject *
- CurrentGetattr(PyObject *self, char *name)
- {
- if (strcmp(name, "buffer") == 0)
- return (PyObject *)BufferNew(curbuf);
- else if (strcmp(name, "window") == 0)
- return (PyObject *)WindowNew(curwin);
- else if (strcmp(name, "line") == 0)
- return GetBufferLine(curbuf, (int)curwin->w_cursor.lnum);
- else if (strcmp(name, "range") == 0)
- return RangeNew(curbuf, RangeStart, RangeEnd);
- else if (strcmp(name,"__members__") == 0)
- return Py_BuildValue("[ssss]", "buffer", "window", "line", "range");
- else
- {
- PyErr_SetString(PyExc_AttributeError, name);
- return NULL;
- }
- }
- /*ARGSUSED*/
- static int
- CurrentSetattr(PyObject *self, char *name, PyObject *value)
- {
- if (strcmp(name, "line") == 0)
- {
- if (SetBufferLine(curbuf, (int)curwin->w_cursor.lnum, value, NULL) == FAIL)
- return -1;
- return 0;
- }
- else
- {
- PyErr_SetString(PyExc_AttributeError, name);
- return -1;
- }
- }
- /* External interface
- */
- void
- python_buffer_free(BUF *buf)
- {
- if (buf->python_ref)
- {
- BufferObject *bp = buf->python_ref;
- bp->buf = INVALID_BUFFER_VALUE;
- buf->python_ref = NULL;
- }
- }
- void
- python_window_free(WIN *win)
- {
- if (win->python_ref)
- {
- WindowObject *wp = win->python_ref;
- wp->win = INVALID_WINDOW_VALUE;
- win->python_ref = NULL;
- }
- }
- static BufListObject TheBufferList =
- {
- PyObject_HEAD_INIT(&BufListType)
- };
- static WinListObject TheWindowList =
- {
- PyObject_HEAD_INIT(&WinListType)
- };
- static CurrentObject TheCurrent =
- {
- PyObject_HEAD_INIT(&CurrentType)
- };
- static int
- PythonMod_Init(void)
- {
- PyObject *mod;
- PyObject *dict;
- /* Fixups... */
- BufferType.ob_type = &PyType_Type;
- RangeType.ob_type = &PyType_Type;
- WindowType.ob_type = &PyType_Type;
- BufListType.ob_type = &PyType_Type;
- WinListType.ob_type = &PyType_Type;
- CurrentType.ob_type = &PyType_Type;
- mod = Py_InitModule("vim", VimMethods);
- dict = PyModule_GetDict(mod);
- VimError = Py_BuildValue("s", "vim.error");
- PyDict_SetItemString(dict, "error", VimError);
- PyDict_SetItemString(dict, "buffers", (PyObject *)(&TheBufferList));
- PyDict_SetItemString(dict, "current", (PyObject *)(&TheCurrent));
- PyDict_SetItemString(dict, "windows", (PyObject *)(&TheWindowList));
- if (PyErr_Occurred())
- return -1;
- return 0;
- }
- /*************************************************************************
- * 4. Utility functions for handling the interface between Vim and Python.
- */
- /* Get a line from the specified buffer. The line number is
- * in Vim format (1-based). The line is returned as a Python
- * string object.
- */
- static PyObject *
- GetBufferLine(BUF *buf, int n)
- {
- return LineToString((char *)ml_get_buf(buf, (linenr_t)n, FALSE));
- }
- /* Get a list of lines from the specified buffer. The line numbers
- * are in Vim format (1-based). The range is from lo up to, but not
- * including, hi. The list is returned as a Python list of string objects.
- */
- static PyObject *
- GetBufferLineList(BUF *buf, int lo, int hi)
- {
- int i;
- int n = hi - lo;
- PyObject *list = PyList_New(n);
- if (list == NULL)
- return NULL;
- for (i = 0; i < n; ++i)
- {
- PyObject *str = LineToString((char *)ml_get_buf(buf, (linenr_t)(lo+i), FALSE));
- /* Error check - was the Python string creation OK? */
- if (str == NULL)
- {
- Py_DECREF(list);
- return NULL;
- }
- /* Set the list item */
- if (PyList_SetItem(list, i, str))
- {
- Py_DECREF(str);
- Py_DECREF(list);
- return NULL;
- }
- }
- /* The ownership of the Python list is passed to the caller (ie,
- * the caller should Py_DECREF() the object when it is finished
- * with it).
- */
- return list;
- }
- /* Replace a line in the specified buffer. The line number is
- * in Vim format (1-based). The replacement line is given as
- * a Python string object. The object is checked for validity
- * and correct format. Errors are returned as a value of FAIL.
- * The return value is OK on success.
- * If OK is returned and len_change is not NULL, *len_change
- * is set to the change in the buffer length.
- */
- static int
- SetBufferLine(BUF *buf, int n, PyObject *line, int *len_change)
- {
- /* First of all, we check the thpe of the supplied Python object.
- * There are three cases:
- * 1. NULL, or None - this is a deletion.
- * 2. A string - this is a replacement.
- * 3. Anything else - this is an error.
- */
- if (line == Py_None || line == NULL)
- {
- BUF *savebuf = curbuf;
- PyErr_Clear();
- curbuf = buf;
- if (u_savedel((linenr_t)n, 1L) == FAIL)
- PyErr_SetVim("cannot save undo information");
- else if (ml_delete((linenr_t)n, FALSE) == FAIL)
- PyErr_SetVim("cannot delete line");
- else
- {
- mark_adjust((linenr_t)n, (linenr_t)n, (long)MAXLNUM, -1L);
- changed();
- }
- curbuf = savebuf;
- update_screen(NOT_VALID);
- if (PyErr_Occurred() || VimErrorCheck())
- return FAIL;
- if (len_change)
- *len_change = -1;
- return OK;
- }
- else if (PyString_Check(line))
- {
- char *save = StringToLine(line);
- BUF *savebuf = curbuf;
- if (save == NULL)
- return FAIL;
- /* We do not need to free save, as we pass responsibility for
- * it to vim, via the final parameter of ml_replace().
- */
- PyErr_Clear();
- curbuf = buf;
- if (u_savesub((linenr_t)n) == FAIL)
- PyErr_SetVim("cannot save undo information");
- else if (ml_replace((linenr_t)n, (char_u *)save, TRUE) == FAIL)
- PyErr_SetVim("cannot replace line");
- else
- {
- changed();
- #ifdef SYNTAX_HL
- syn_changed((linenr_t)n); /* recompute syntax hl. for this line */
- #endif
- }
- curbuf = savebuf;
- update_screen(NOT_VALID);
- if (PyErr_Occurred() || VimErrorCheck())
- return FAIL;
- if (len_change)
- *len_change = 0;
- return OK;
- }
- else
- {
- PyErr_BadArgument();
- return FAIL;
- }
- }
- /* Replace a range of lines in the specified buffer. The line numbers are in
- * Vim format (1-based). The range is from lo up to, but not including, hi.
- * The replacement lines are given as a Python list of string objects. The
- * list is checked for validity and correct format. Errors are returned as a
- * value of FAIL. The return value is OK on success.
- * If OK is returned and len_change is not NULL, *len_change
- * is set to the change in the buffer length.
- */
- static int
- SetBufferLineList(BUF *buf, int lo, int hi, PyObject *list, int *len_change)
- {
- /* First of all, we check the thpe of the supplied Python object.
- * There are three cases:
- * 1. NULL, or None - this is a deletion.
- * 2. A list - this is a replacement.
- * 3. Anything else - this is an error.
- */
- if (list == Py_None || list == NULL)
- {
- int i;
- int ok = 0;
- int n = hi - lo;
- BUF *savebuf = curbuf;
- PyErr_Clear();
- curbuf = buf;
- if (u_savedel((linenr_t)lo, (long)n) == FAIL)
- PyErr_SetVim("cannot save undo information");
- else
- {
- ok = 1;
- for (i = 0; i < n; ++i)
- {
- if (ml_delete((linenr_t)lo, FALSE) == FAIL)
- {
- PyErr_SetVim("cannot delete line");
- ok = 0;
- break;
- }
- changed();
- }
- }
- if (ok)
- mark_adjust((linenr_t)lo, (linenr_t)(hi-1), (long)MAXLNUM,
- (long)-n);
- curbuf = savebuf;
- update_screen(NOT_VALID);
- if (PyErr_Occurred() || VimErrorCheck())
- return FAIL;
- if (len_change)
- *len_change = -n;
- return OK;
- }
- else if (PyList_Check(list))
- {
- int i;
- int n = PyList_Size(list);
- int lines = hi - lo;
- char **array;
- BUF *savebuf;
- array = (char **)alloc((unsigned)(n * sizeof(char *)));
- if (array == NULL)
- {
- PyErr_NoMemory();
- return FAIL;
- }
- for (i = 0; i < n; ++i)
- {
- PyObject *line = PyList_GetItem(list, i);
- array[i] = StringToLine(line);
- if (array[i] == NULL)
- {
- while (i)
- vim_free(array[--i]);
- vim_free(array);
- return FAIL;
- }
- }
- savebuf = curbuf;
- PyErr_Clear();
- curbuf = buf;
- if (u_save((linenr_t)(lo-1), (linenr_t)hi) == FAIL)
- PyErr_SetVim("cannot save undo information");
- /* If the size of the range is reducing (ie, n < lines) we
- * need to delete some lines. We do this at the start, by
- * repeatedly deleting line "lo".
- */
- if (!PyErr_Occurred())
- {
- for (i = 0; i < lines - n; ++i)
- {
- if (ml_delete((linenr_t)lo, FALSE) == FAIL)
- {
- PyErr_SetVim("cannot delete line");
- break;
- }
- changed();
- }
- }
- /* For as long as possible, replace the existing lines with the
- * new lines. This is a more efficient operation, as it requires
- * less memory allocation and freeing.
- */
- if (!PyErr_Occurred())
- {
- for (i = 0; i < lines && i < n; ++i)
- {
- if (ml_replace((linenr_t)(lo+i), (char_u *)array[i], TRUE)
- == FAIL)
- {
- PyErr_SetVim("cannot replace line");
- break;
- }
- changed();
- #ifdef SYNTAX_HL
- /* recompute syntax hl. for this line */
- syn_changed((linenr_t)(lo+i));
- #endif
- }
- }
- /* Now we may need to insert the remaining new lines. If we do, we
- * must free the strings as we finish with them (we can't pass the
- * responsibility to vim in this case).
- */
- if (!PyErr_Occurred())
- {
- while (i < n)
- {
- if (ml_append((linenr_t)(lo+i-1), (char_u *)array[i], 0, FALSE) == FAIL)
- {
- PyErr_SetVim("cannot insert line");
- break;
- }
- changed();
- vim_free(array[i]);
- ++i;
- }
- }
- /* Free any left-over lines, as a result of an error */
- while (i < n)
- {
- vim_free(array[i]);
- ++i;
- }
- /* Adjust marks. Invalidate any which lie in the
- * changed range, and move any in the remainder of the buffer.
- */
- if (!PyErr_Occurred())
- mark_adjust((linenr_t)lo, (linenr_t)(hi-1), (long)MAXLNUM, (long)(n - lines));
- /* Free the array of lines. All of its contents have now
- * been dealt with (either freed, or the responsibility passed
- * to vim.
- */
- vim_free(array);
- curbuf = savebuf;
- update_screen(NOT_VALID);
- if (PyErr_Occurred() || VimErrorCheck())
- return FAIL;
- if (len_change)
- *len_change = n - lines;
- return OK;
- }
- else
- {
- PyErr_BadArgument();
- return FAIL;
- }
- }
- /* Insert a number of lines into the specified buffer after the specifed line.
- * The line number is in Vim format (1-based). The lines to be inserted are
- * given as a Python list of string objects or as a single string. The lines
- * to be added are checked for validity and correct format. Errors are
- * returned as a value of FAIL. The return value is OK on success.
- * If OK is returned and len_change is not NULL, *len_change
- * is set to the change in the buffer length.
- */
- static int
- InsertBufferLines(BUF *buf, int n, PyObject *lines, int *len_change)
- {
- /* First of all, we check the type of the supplied Python object.
- * It must be a string or a list, or the call is in error.
- */
- if (PyString_Check(lines))
- {
- char *str = StringToLine(lines);
- BUF *savebuf;
- if (str == NULL)
- return FAIL;
- savebuf = curbuf;
- PyErr_Clear();
- curbuf = buf;
- if (u_save((linenr_t)n, (linenr_t)(n+1)) == FAIL)
- PyErr_SetVim("cannot save undo information");
- else if (ml_append((linenr_t)n, (char_u *)str, 0, FALSE) == FAIL)
- PyErr_SetVim("cannot insert line");
- else
- {
- mark_adjust((linenr_t)(n+1), (linenr_t)MAXLNUM, 1L, 0L);
- changed();
- }
- vim_free(str);
- curbuf = savebuf;
- update_screen(NOT_VALID);
- if (PyErr_Occurred() || VimErrorCheck())
- return FAIL;
- if (len_change)
- *len_change = 1;
- return OK;
- }
- else if (PyList_Check(lines))
- {
- int i;
- int ok = 0;
- int size = PyList_Size(lines);
- char **array;
- BUF *savebuf;
- array = (char **)alloc((unsigned)(size * sizeof(char *)));
- if (array == NULL)
- {
- PyErr_NoMemory();
- return FAIL;
- }
- for (i = 0; i < size; ++i)
- {
- PyObject *line = PyList_GetItem(lines, i);
- array[i] = StringToLine(line);
- if (array[i] == NULL)
- {
- while (i)
- vim_free(array[--i]);
- vim_free(array);
- return FAIL;
- }
- }
- savebuf = curbuf;
- PyErr_Clear();
- curbuf = buf;
- if (u_save((linenr_t)n, (linenr_t)(n+1)) == FAIL)
- PyErr_SetVim("cannot save undo information");
- else
- {
- ok = 1;
- for (i = 0; i < size; ++i)
- {
- if (ml_append((linenr_t)(n+i), (char_u *)array[i], 0, FALSE) == FAIL)
- {
- PyErr_SetVim("cannot insert line");
- ok = 0;
- /* Free the rest of the lines */
- while (i < size)
- vim_free(array[i++]);
- break;
- }
- changed();
- vim_free(array[i]);
- }
- }
- if (ok)
- mark_adjust((linenr_t)(n+1), (linenr_t)MAXLNUM, (long)size, 0L);
- /* Free the array of lines. All of its contents have now
- * been freed.
- */
- vim_free(array);
- curbuf = savebuf;
- update_screen(NOT_VALID);
- if (PyErr_Occurred() || VimErrorCheck())
- return FAIL;
- if (len_change)
- *len_change = size;
- return OK;
- }
- else
- {
- PyErr_BadArgument();
- return FAIL;
- }
- }
- /* Convert a Vim line into a Python string.
- * All internal newlines are replaced by null characters.
- *
- * On errors, the Python exception data is set, and NULL is returned.
- */
- static PyObject *
- LineToString(const char *str)
- {
- PyObject *result;
- int len = strlen(str);
- char *p;
- /* Allocate an Python string object, with uninitialised contents. We
- * must do it this way, so that we can modify the string in place
- * later. See the Python source, Objects/stringobject.c for details.
- */
- result = PyString_FromStringAndSize(NULL, len);
- if (result == NULL)
- return NULL;
- p = PyString_AsString(result);
- while (*str)
- {
- if (*str == 'n')
- *p = ' ';
- else
- *p = *str;
- ++p;
- ++str;
- }
- return result;
- }
- /* Convert a Python string into a Vim line.
- *
- * The result is in allocated memory. All internal nulls are replaced by
- * newline characters. It is an error for the string to contain newline
- * characters.
- *
- * On errors, the Python exception data is set, and NULL is returned.
- */
- static char *
- StringToLine(PyObject *obj)
- {
- const char *str;
- char *save;
- int len;
- int i;
- if (obj == NULL || !PyString_Check(obj))
- {
- PyErr_BadArgument();
- return NULL;
- }
- str = PyString_AsString(obj);
- len = PyString_Size(obj);
- /* Error checking: String must not contain newlines, as we
- * are replacing a single line, and we must replace it with
- * a single line.
- */
- if (memchr(str, 'n', len))
- {
- PyErr_SetVim("string cannot contain newlines");
- return NULL;
- }
- /* Create a copy of the string, with internal nulls replaced by
- * newline characters, as is the vim convention.
- */
- save = (char *)alloc((unsigned)(len+1));
- if (save == NULL)
- {
- PyErr_NoMemory();
- return NULL;
- }
- for (i = 0; i < len; ++i)
- {
- if (str[i] == ' ')
- save[i] = 'n';
- else
- save[i] = str[i];
- }
- save[i] = ' ';
- return save;
- }
- /* Check to see whether a Vim error has been reported, or a keyboard
- * interrupt has been detected.
- */
- static int
- VimErrorCheck(void)
- {
- if (got_int)
- {
- PyErr_SetNone(PyExc_KeyboardInterrupt);
- return 1;
- }
- else if (did_emsg && !PyErr_Occurred())
- {
- PyErr_SetNone(VimError);
- return 1;
- }
- return 0;
- }
- #if PYTHON_API_VERSION < 1007 /* Python 1.4 */
- char *
- Py_GetProgramName(void)
- {
- return "vim";
- }
- #endif /* Python 1.4 */