From 846b0904090e3433e78d542bbcc2f57bf23ab604 Mon Sep 17 00:00:00 2001 From: Alexandre Vassalotti Date: Mon, 2 Jun 2008 16:06:56 +0000 Subject: Removed the old cStringIO module. --- Modules/cStringIO.c | 754 ---------------------------------------------------- 1 file changed, 754 deletions(-) delete mode 100644 Modules/cStringIO.c diff --git a/Modules/cStringIO.c b/Modules/cStringIO.c deleted file mode 100644 index 8929500..0000000 --- a/Modules/cStringIO.c +++ /dev/null @@ -1,754 +0,0 @@ - -#include "Python.h" -#include "import.h" -#include "cStringIO.h" -#include "structmember.h" - -PyDoc_STRVAR(cStringIO_module_documentation, -"A simple fast partial StringIO replacement.\n" -"\n" -"This module provides a simple useful replacement for\n" -"the StringIO module that is written in C. It does not provide the\n" -"full generality of StringIO, but it provides enough for most\n" -"applications and is especially useful in conjunction with the\n" -"pickle module.\n" -"\n" -"Usage:\n" -"\n" -" from cStringIO import StringIO\n" -"\n" -" an_output_stream=StringIO()\n" -" an_output_stream.write(some_stuff)\n" -" ...\n" -" value=an_output_stream.getvalue()\n" -"\n" -" an_input_stream=StringIO(a_string)\n" -" spam=an_input_stream.readline()\n" -" spam=an_input_stream.read(5)\n" -" an_input_stream.seek(0) # OK, start over\n" -" spam=an_input_stream.read() # and read it all\n" -" \n" -"If someone else wants to provide a more complete implementation,\n" -"go for it. :-) \n" -"\n" -"cStringIO.c,v 1.29 1999/06/15 14:10:27 jim Exp\n"); - -/* Declaration for file-like objects that manage data as strings - - The IOobject type should be though of as a common base type for - Iobjects, which provide input (read-only) StringIO objects and - Oobjects, which provide read-write objects. Most of the methods - depend only on common data. -*/ - -typedef struct { - PyObject_HEAD - char *buf; - Py_ssize_t pos, string_size; -} IOobject; - -#define IOOOBJECT(O) ((IOobject*)(O)) - -/* Declarations for objects of type StringO */ - -typedef struct { /* Subtype of IOobject */ - PyObject_HEAD - char *buf; - Py_ssize_t pos, string_size; - - Py_ssize_t buf_size; -} Oobject; - -/* Declarations for objects of type StringI */ - -typedef struct { /* Subtype of IOobject */ - PyObject_HEAD - char *buf; - Py_ssize_t pos, string_size; - /* We store a reference to the object here in order to keep - the buffer alive during the lifetime of the Iobject. */ - PyObject *pbuf; -} Iobject; - -/* IOobject (common) methods */ - -PyDoc_STRVAR(IO_flush__doc__, "flush(): does nothing."); - -static int -IO__opencheck(IOobject *self) { - if (!self->buf) { - PyErr_SetString(PyExc_ValueError, - "I/O operation on closed file"); - return 0; - } - return 1; -} - -static PyObject * -IO_get_closed(IOobject *self, void *closure) -{ - PyObject *result = Py_False; - - if (self->buf == NULL) - result = Py_True; - Py_INCREF(result); - return result; -} - -static PyGetSetDef file_getsetlist[] = { - {"closed", (getter)IO_get_closed, NULL, "True if the file is closed"}, - {0}, -}; - -static PyObject * -IO_flush(IOobject *self, PyObject *unused) { - - if (!IO__opencheck(self)) return NULL; - - Py_INCREF(Py_None); - return Py_None; -} - -PyDoc_STRVAR(IO_getval__doc__, -"getvalue([use_pos]) -- Get the string value." -"\n" -"If use_pos is specified and is a true value, then the string returned\n" -"will include only the text up to the current file position.\n"); - -static PyObject * -IO_cgetval(PyObject *self) { - if (!IO__opencheck(IOOOBJECT(self))) return NULL; - return PyBytes_FromStringAndSize(((IOobject*)self)->buf, - ((IOobject*)self)->pos); -} - -static PyObject * -IO_getval(IOobject *self, PyObject *args) { - PyObject *use_pos=Py_None; - Py_ssize_t s; - - if (!IO__opencheck(self)) return NULL; - if (!PyArg_UnpackTuple(args,"getval", 0, 1,&use_pos)) return NULL; - - if (PyObject_IsTrue(use_pos)) { - s=self->pos; - if (s > self->string_size) s=self->string_size; - } - else - s=self->string_size; - return PyBytes_FromStringAndSize(self->buf, s); -} - -PyDoc_STRVAR(IO_isatty__doc__, "isatty(): always returns 0"); - -static PyObject * -IO_isatty(IOobject *self, PyObject *unused) { - if (!IO__opencheck(self)) return NULL; - Py_INCREF(Py_False); - return Py_False; -} - -PyDoc_STRVAR(IO_read__doc__, -"read([s]) -- Read s characters, or the rest of the string"); - -static int -IO_cread(PyObject *self, char **output, Py_ssize_t n) { - Py_ssize_t l; - - if (!IO__opencheck(IOOOBJECT(self))) return -1; - l = ((IOobject*)self)->string_size - ((IOobject*)self)->pos; - if (n < 0 || n > l) { - n = l; - if (n < 0) n=0; - } - - *output=((IOobject*)self)->buf + ((IOobject*)self)->pos; - ((IOobject*)self)->pos += n; - return n; -} - -static PyObject * -IO_read(IOobject *self, PyObject *args) { - Py_ssize_t n = -1; - char *output = NULL; - - if (!PyArg_ParseTuple(args, "|n:read", &n)) return NULL; - - if ( (n=IO_cread((PyObject*)self,&output,n)) < 0) return NULL; - - return PyBytes_FromStringAndSize(output, n); -} - -PyDoc_STRVAR(IO_readline__doc__, "readline() -- Read one line"); - -static int -IO_creadline(PyObject *self, char **output) { - char *n, *s; - Py_ssize_t l; - - if (!IO__opencheck(IOOOBJECT(self))) return -1; - - for (n = ((IOobject*)self)->buf + ((IOobject*)self)->pos, - s = ((IOobject*)self)->buf + ((IOobject*)self)->string_size; - n < s && *n != '\n'; n++); - if (n < s) n++; - - *output=((IOobject*)self)->buf + ((IOobject*)self)->pos; - l = n - ((IOobject*)self)->buf - ((IOobject*)self)->pos; - assert(((IOobject*)self)->pos + l < INT_MAX); - ((IOobject*)self)->pos += (int)l; - return (int)l; -} - -static PyObject * -IO_readline(IOobject *self, PyObject *args) { - int n, m=-1; - char *output; - - if (args) - if (!PyArg_ParseTuple(args, "|i:readline", &m)) return NULL; - - if( (n=IO_creadline((PyObject*)self,&output)) < 0) return NULL; - if (m >= 0 && m < n) { - m = n - m; - n -= m; - self->pos -= m; - } - return PyBytes_FromStringAndSize(output, n); -} - -PyDoc_STRVAR(IO_readlines__doc__, "readlines() -- Read all lines"); - -static PyObject * -IO_readlines(IOobject *self, PyObject *args) { - int n; - char *output; - PyObject *result, *line; - int hint = 0, length = 0; - - if (!PyArg_ParseTuple(args, "|i:readlines", &hint)) return NULL; - - result = PyList_New(0); - if (!result) - return NULL; - - while (1){ - if ( (n = IO_creadline((PyObject*)self,&output)) < 0) - goto err; - if (n == 0) - break; - line = PyBytes_FromStringAndSize (output, n); - if (!line) - goto err; - if (PyList_Append (result, line) == -1) { - Py_DECREF (line); - goto err; - } - Py_DECREF (line); - length += n; - if (hint > 0 && length >= hint) - break; - } - return result; - err: - Py_DECREF(result); - return NULL; -} - -PyDoc_STRVAR(IO_reset__doc__, -"reset() -- Reset the file position to the beginning"); - -static PyObject * -IO_reset(IOobject *self, PyObject *unused) { - - if (!IO__opencheck(self)) return NULL; - - self->pos = 0; - - Py_INCREF(Py_None); - return Py_None; -} - -PyDoc_STRVAR(IO_tell__doc__, "tell() -- get the current position."); - -static PyObject * -IO_tell(IOobject *self, PyObject *unused) { - - if (!IO__opencheck(self)) return NULL; - - return PyLong_FromSsize_t(self->pos); -} - -PyDoc_STRVAR(IO_truncate__doc__, -"truncate(): truncate the file at the current position."); - -static PyObject * -IO_truncate(IOobject *self, PyObject *args) { - Py_ssize_t pos = -1; - - if (!IO__opencheck(self)) return NULL; - if (!PyArg_ParseTuple(args, "|n:truncate", &pos)) return NULL; - - if (PyTuple_Size(args) == 0) { - /* No argument passed, truncate to current position */ - pos = self->pos; - } - - if (pos < 0) { - errno = EINVAL; - PyErr_SetFromErrno(PyExc_IOError); - return NULL; - } - - if (self->string_size > pos) self->string_size = pos; - self->pos = self->string_size; - - Py_INCREF(Py_None); - return Py_None; -} - -static PyObject * -IO_iternext(Iobject *self) -{ - PyObject *next; - next = IO_readline((IOobject *)self, NULL); - if (!next) - return NULL; - if (!PyBytes_GET_SIZE(next)) { - Py_DECREF(next); - PyErr_SetNone(PyExc_StopIteration); - return NULL; - } - return next; -} - - - - -/* Read-write object methods */ - -PyDoc_STRVAR(O_seek__doc__, -"seek(position) -- set the current position\n" -"seek(position, mode) -- mode 0: absolute; 1: relative; 2: relative to EOF"); - -static PyObject * -O_seek(Oobject *self, PyObject *args) { - Py_ssize_t position; - int mode = 0; - - if (!IO__opencheck(IOOOBJECT(self))) return NULL; - if (!PyArg_ParseTuple(args, "n|i:seek", &position, &mode)) - return NULL; - - if (mode == 2) { - position += self->string_size; - } - else if (mode == 1) { - position += self->pos; - } - - if (position > self->buf_size) { - char *newbuf; - self->buf_size*=2; - if (self->buf_size <= position) self->buf_size=position+1; - newbuf = (char*) realloc(self->buf,self->buf_size); - if (!newbuf) { - free(self->buf); - self->buf = 0; - self->buf_size=self->pos=0; - return PyErr_NoMemory(); - } - self->buf = newbuf; - } - else if (position < 0) position=0; - - self->pos=position; - - while (--position >= self->string_size) self->buf[position]=0; - - Py_INCREF(Py_None); - return Py_None; -} - -PyDoc_STRVAR(O_write__doc__, -"write(s) -- Write a string to the file" -"\n\nNote (hack:) writing None resets the buffer"); - - -static int -O_cwrite(PyObject *self, const char *c, Py_ssize_t l) { - Py_ssize_t newl; - Oobject *oself; - char *newbuf; - - if (!IO__opencheck(IOOOBJECT(self))) return -1; - oself = (Oobject *)self; - - newl = oself->pos+l; - if (newl >= oself->buf_size) { - oself->buf_size *= 2; - if (oself->buf_size <= newl) { - assert(newl + 1 < INT_MAX); - oself->buf_size = (int)(newl+1); - } - newbuf = (char*)realloc(oself->buf, oself->buf_size); - if (!newbuf) { - PyErr_SetString(PyExc_MemoryError,"out of memory"); - free(oself->buf); - oself->buf = 0; - oself->buf_size = oself->pos = 0; - return -1; - } - oself->buf = newbuf; - } - - memcpy(oself->buf+oself->pos,c,l); - - assert(oself->pos + l < INT_MAX); - oself->pos += (int)l; - - if (oself->string_size < oself->pos) { - oself->string_size = oself->pos; - } - - return (int)l; -} - -static PyObject * -O_write(Oobject *self, PyObject *args) { - char *c; - int l; - - if (!PyArg_ParseTuple(args, "t#:write", &c, &l)) return NULL; - - if (O_cwrite((PyObject*)self,c,l) < 0) return NULL; - - Py_INCREF(Py_None); - return Py_None; -} - -PyDoc_STRVAR(O_close__doc__, "close(): explicitly release resources held."); - -static PyObject * -O_close(Oobject *self, PyObject *unused) { - if (self->buf != NULL) free(self->buf); - self->buf = NULL; - - self->pos = self->string_size = self->buf_size = 0; - - Py_INCREF(Py_None); - return Py_None; -} - -PyDoc_STRVAR(O_writelines__doc__, -"writelines(sequence_of_strings) -> None. Write the strings to the file.\n" -"\n" -"Note that newlines are not added. The sequence can be any iterable object\n" -"producing strings. This is equivalent to calling write() for each string."); -static PyObject * -O_writelines(Oobject *self, PyObject *args) { - PyObject *it, *s; - - it = PyObject_GetIter(args); - if (it == NULL) - return NULL; - while ((s = PyIter_Next(it)) != NULL) { - Py_ssize_t n; - char *c; - if (PyBytes_AsStringAndSize(s, &c, &n) == -1) { - Py_DECREF(it); - Py_DECREF(s); - return NULL; - } - if (O_cwrite((PyObject *)self, c, n) == -1) { - Py_DECREF(it); - Py_DECREF(s); - return NULL; - } - Py_DECREF(s); - } - - Py_DECREF(it); - - /* See if PyIter_Next failed */ - if (PyErr_Occurred()) - return NULL; - - Py_RETURN_NONE; -} -static struct PyMethodDef O_methods[] = { - /* Common methods: */ - {"flush", (PyCFunction)IO_flush, METH_NOARGS, IO_flush__doc__}, - {"getvalue", (PyCFunction)IO_getval, METH_VARARGS, IO_getval__doc__}, - {"isatty", (PyCFunction)IO_isatty, METH_NOARGS, IO_isatty__doc__}, - {"read", (PyCFunction)IO_read, METH_VARARGS, IO_read__doc__}, - {"readline", (PyCFunction)IO_readline, METH_VARARGS, IO_readline__doc__}, - {"readlines", (PyCFunction)IO_readlines,METH_VARARGS, IO_readlines__doc__}, - {"reset", (PyCFunction)IO_reset, METH_NOARGS, IO_reset__doc__}, - {"tell", (PyCFunction)IO_tell, METH_NOARGS, IO_tell__doc__}, - {"truncate", (PyCFunction)IO_truncate, METH_VARARGS, IO_truncate__doc__}, - - /* Read-write StringIO specific methods: */ - {"close", (PyCFunction)O_close, METH_NOARGS, O_close__doc__}, - {"seek", (PyCFunction)O_seek, METH_VARARGS, O_seek__doc__}, - {"write", (PyCFunction)O_write, METH_VARARGS, O_write__doc__}, - {"writelines", (PyCFunction)O_writelines, METH_O, O_writelines__doc__}, - {NULL, NULL} /* sentinel */ -}; - -static void -O_dealloc(Oobject *self) { - if (self->buf != NULL) - free(self->buf); - PyObject_Del(self); -} - -PyDoc_STRVAR(Otype__doc__, "Simple type for output to strings."); - -static PyTypeObject Otype = { - PyVarObject_HEAD_INIT(NULL, 0) - "cStringIO.StringO", /*tp_name*/ - sizeof(Oobject), /*tp_basicsize*/ - 0, /*tp_itemsize*/ - /* methods */ - (destructor)O_dealloc, /*tp_dealloc*/ - 0, /*tp_print*/ - 0, /*tp_getattr */ - 0, /*tp_setattr */ - 0, /*tp_compare*/ - 0, /*tp_repr*/ - 0, /*tp_as_number*/ - 0, /*tp_as_sequence*/ - 0, /*tp_as_mapping*/ - 0, /*tp_hash*/ - 0 , /*tp_call*/ - 0, /*tp_str*/ - 0, /*tp_getattro */ - 0, /*tp_setattro */ - 0, /*tp_as_buffer */ - Py_TPFLAGS_DEFAULT, /*tp_flags*/ - Otype__doc__, /*tp_doc */ - 0, /*tp_traverse */ - 0, /*tp_clear */ - 0, /*tp_richcompare */ - 0, /*tp_weaklistoffset */ - PyObject_SelfIter, /*tp_iter */ - (iternextfunc)IO_iternext, /*tp_iternext */ - O_methods, /*tp_methods */ - 0, /*tp_members */ - file_getsetlist, /*tp_getset */ -}; - -static PyObject * -newOobject(int size) { - Oobject *self; - - self = PyObject_New(Oobject, &Otype); - if (self == NULL) - return NULL; - self->pos=0; - self->string_size = 0; - - self->buf = (char *)malloc(size); - if (!self->buf) { - PyErr_SetString(PyExc_MemoryError,"out of memory"); - self->buf_size = 0; - Py_DECREF(self); - return NULL; - } - - self->buf_size=size; - return (PyObject*)self; -} - -/* End of code for StringO objects */ -/* -------------------------------------------------------- */ - -static PyObject * -I_close(Iobject *self, PyObject *unused) { - Py_CLEAR(self->pbuf); - self->buf = NULL; - - self->pos = self->string_size = 0; - - Py_INCREF(Py_None); - return Py_None; -} - -static PyObject * -I_seek(Iobject *self, PyObject *args) { - Py_ssize_t position; - int mode = 0; - - if (!IO__opencheck(IOOOBJECT(self))) return NULL; - if (!PyArg_ParseTuple(args, "n|i:seek", &position, &mode)) - return NULL; - - if (mode == 2) position += self->string_size; - else if (mode == 1) position += self->pos; - - if (position < 0) position=0; - - self->pos=position; - - Py_INCREF(Py_None); - return Py_None; -} - -static struct PyMethodDef I_methods[] = { - /* Common methods: */ - {"flush", (PyCFunction)IO_flush, METH_NOARGS, IO_flush__doc__}, - {"getvalue", (PyCFunction)IO_getval, METH_VARARGS, IO_getval__doc__}, - {"isatty", (PyCFunction)IO_isatty, METH_NOARGS, IO_isatty__doc__}, - {"read", (PyCFunction)IO_read, METH_VARARGS, IO_read__doc__}, - {"readline", (PyCFunction)IO_readline, METH_VARARGS, IO_readline__doc__}, - {"readlines", (PyCFunction)IO_readlines,METH_VARARGS, IO_readlines__doc__}, - {"reset", (PyCFunction)IO_reset, METH_NOARGS, IO_reset__doc__}, - {"tell", (PyCFunction)IO_tell, METH_NOARGS, IO_tell__doc__}, - {"truncate", (PyCFunction)IO_truncate, METH_VARARGS, IO_truncate__doc__}, - - /* Read-only StringIO specific methods: */ - {"close", (PyCFunction)I_close, METH_NOARGS, O_close__doc__}, - {"seek", (PyCFunction)I_seek, METH_VARARGS, O_seek__doc__}, - {NULL, NULL} -}; - -static void -I_dealloc(Iobject *self) { - Py_XDECREF(self->pbuf); - PyObject_Del(self); -} - - -PyDoc_STRVAR(Itype__doc__, -"Simple type for treating strings as input file streams"); - -static PyTypeObject Itype = { - PyVarObject_HEAD_INIT(NULL, 0) - "cStringIO.StringI", /*tp_name*/ - sizeof(Iobject), /*tp_basicsize*/ - 0, /*tp_itemsize*/ - /* methods */ - (destructor)I_dealloc, /*tp_dealloc*/ - 0, /*tp_print*/ - 0, /* tp_getattr */ - 0, /*tp_setattr*/ - 0, /*tp_compare*/ - 0, /*tp_repr*/ - 0, /*tp_as_number*/ - 0, /*tp_as_sequence*/ - 0, /*tp_as_mapping*/ - 0, /*tp_hash*/ - 0, /*tp_call*/ - 0, /*tp_str*/ - 0, /* tp_getattro */ - 0, /* tp_setattro */ - 0, /* tp_as_buffer */ - Py_TPFLAGS_DEFAULT, /* tp_flags */ - Itype__doc__, /* tp_doc */ - 0, /* tp_traverse */ - 0, /* tp_clear */ - 0, /* tp_richcompare */ - 0, /* tp_weaklistoffset */ - PyObject_SelfIter, /* tp_iter */ - (iternextfunc)IO_iternext, /* tp_iternext */ - I_methods, /* tp_methods */ - 0, /* tp_members */ - file_getsetlist, /* tp_getset */ -}; - -static PyObject * -newIobject(PyObject *s) { - Iobject *self; - char *buf; - Py_ssize_t size; - - if (PyObject_AsReadBuffer(s, (const void **)&buf, &size)) { - PyErr_Format(PyExc_TypeError, "expected read buffer, %.200s found", - s->ob_type->tp_name); - return NULL; - } - - self = PyObject_New(Iobject, &Itype); - if (!self) return NULL; - Py_INCREF(s); - self->buf=buf; - self->string_size=size; - self->pbuf=s; - self->pos=0; - - return (PyObject*)self; -} - -/* End of code for StringI objects */ -/* -------------------------------------------------------- */ - - -PyDoc_STRVAR(IO_StringIO__doc__, -"StringIO([s]) -- Return a StringIO-like stream for reading or writing"); - -static PyObject * -IO_StringIO(PyObject *self, PyObject *args) { - PyObject *s=0; - - if (!PyArg_UnpackTuple(args, "StringIO", 0, 1, &s)) return NULL; - - if (s) return newIobject(s); - return newOobject(128); -} - -/* List of methods defined in the module */ - -static struct PyMethodDef IO_methods[] = { - {"StringIO", (PyCFunction)IO_StringIO, - METH_VARARGS, IO_StringIO__doc__}, - {NULL, NULL} /* sentinel */ -}; - - -/* Initialization function for the module (*must* be called initcStringIO) */ - -static struct PycStringIO_CAPI CAPI = { - IO_cread, - IO_creadline, - O_cwrite, - IO_cgetval, - newOobject, - newIobject, - &Itype, - &Otype, -}; - -#ifndef PyMODINIT_FUNC /* declarations for DLL import/export */ -#define PyMODINIT_FUNC void -#endif -PyMODINIT_FUNC -initcStringIO(void) { - PyObject *m, *d, *v; - - - /* Create the module and add the functions */ - m = Py_InitModule4("cStringIO", IO_methods, - cStringIO_module_documentation, - (PyObject*)NULL,PYTHON_API_VERSION); - if (m == NULL) return; - - /* Add some symbolic constants to the module */ - d = PyModule_GetDict(m); - - /* Export C API */ - Py_TYPE(&Itype)=&PyType_Type; - Py_TYPE(&Otype)=&PyType_Type; - if (PyType_Ready(&Otype) < 0) return; - if (PyType_Ready(&Itype) < 0) return; - PyDict_SetItemString(d,"cStringIO_CAPI", - v = PyCObject_FromVoidPtr(&CAPI,NULL)); - Py_XDECREF(v); - - /* Export Types */ - PyDict_SetItemString(d,"InputType", (PyObject*)&Itype); - PyDict_SetItemString(d,"OutputType", (PyObject*)&Otype); - - /* Maybe make certain warnings go away */ - if (0) PycString_IMPORT; -} -- cgit v0.12