4710c53dca
These files are a subset of the python-2.7.2.tgz distribution from python.org. Changed files from PyMod-2.7.2 have been copied into the corresponding directories of this tree, replacing the original files in the distribution. Signed-off-by: daryl.mcdaniel@intel.com git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13197 6f19259b-4bc3-4df7-8a09-765794883524
2618 lines
81 KiB
C
2618 lines
81 KiB
C
/*
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An implementation of Text I/O as defined by PEP 3116 - "New I/O"
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Classes defined here: TextIOBase, IncrementalNewlineDecoder, TextIOWrapper.
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Written by Amaury Forgeot d'Arc and Antoine Pitrou
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*/
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#define PY_SSIZE_T_CLEAN
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#include "Python.h"
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#include "structmember.h"
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#include "_iomodule.h"
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/* TextIOBase */
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PyDoc_STRVAR(textiobase_doc,
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"Base class for text I/O.\n"
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"\n"
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"This class provides a character and line based interface to stream\n"
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"I/O. There is no readinto method because Python's character strings\n"
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"are immutable. There is no public constructor.\n"
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);
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static PyObject *
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_unsupported(const char *message)
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{
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PyErr_SetString(_PyIO_unsupported_operation, message);
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return NULL;
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}
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PyDoc_STRVAR(textiobase_detach_doc,
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"Separate the underlying buffer from the TextIOBase and return it.\n"
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"\n"
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"After the underlying buffer has been detached, the TextIO is in an\n"
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"unusable state.\n"
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);
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static PyObject *
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textiobase_detach(PyObject *self)
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{
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return _unsupported("detach");
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}
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PyDoc_STRVAR(textiobase_read_doc,
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"Read at most n characters from stream.\n"
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"\n"
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"Read from underlying buffer until we have n characters or we hit EOF.\n"
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"If n is negative or omitted, read until EOF.\n"
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);
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static PyObject *
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textiobase_read(PyObject *self, PyObject *args)
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{
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return _unsupported("read");
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}
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PyDoc_STRVAR(textiobase_readline_doc,
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"Read until newline or EOF.\n"
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"\n"
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"Returns an empty string if EOF is hit immediately.\n"
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);
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static PyObject *
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textiobase_readline(PyObject *self, PyObject *args)
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{
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return _unsupported("readline");
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}
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PyDoc_STRVAR(textiobase_write_doc,
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"Write string to stream.\n"
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"Returns the number of characters written (which is always equal to\n"
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"the length of the string).\n"
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);
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static PyObject *
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textiobase_write(PyObject *self, PyObject *args)
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{
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return _unsupported("write");
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}
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PyDoc_STRVAR(textiobase_encoding_doc,
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"Encoding of the text stream.\n"
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"\n"
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"Subclasses should override.\n"
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);
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static PyObject *
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textiobase_encoding_get(PyObject *self, void *context)
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{
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Py_RETURN_NONE;
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}
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PyDoc_STRVAR(textiobase_newlines_doc,
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"Line endings translated so far.\n"
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"\n"
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"Only line endings translated during reading are considered.\n"
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"\n"
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"Subclasses should override.\n"
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);
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static PyObject *
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textiobase_newlines_get(PyObject *self, void *context)
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{
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Py_RETURN_NONE;
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}
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PyDoc_STRVAR(textiobase_errors_doc,
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"The error setting of the decoder or encoder.\n"
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"\n"
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"Subclasses should override.\n"
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);
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static PyObject *
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textiobase_errors_get(PyObject *self, void *context)
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{
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Py_RETURN_NONE;
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}
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static PyMethodDef textiobase_methods[] = {
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{"detach", (PyCFunction)textiobase_detach, METH_NOARGS, textiobase_detach_doc},
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{"read", textiobase_read, METH_VARARGS, textiobase_read_doc},
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{"readline", textiobase_readline, METH_VARARGS, textiobase_readline_doc},
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{"write", textiobase_write, METH_VARARGS, textiobase_write_doc},
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{NULL, NULL}
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};
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static PyGetSetDef textiobase_getset[] = {
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{"encoding", (getter)textiobase_encoding_get, NULL, textiobase_encoding_doc},
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{"newlines", (getter)textiobase_newlines_get, NULL, textiobase_newlines_doc},
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{"errors", (getter)textiobase_errors_get, NULL, textiobase_errors_doc},
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{NULL}
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};
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PyTypeObject PyTextIOBase_Type = {
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PyVarObject_HEAD_INIT(NULL, 0)
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"_io._TextIOBase", /*tp_name*/
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0, /*tp_basicsize*/
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0, /*tp_itemsize*/
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0, /*tp_dealloc*/
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0, /*tp_print*/
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0, /*tp_getattr*/
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0, /*tp_setattr*/
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0, /*tp_compare */
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0, /*tp_repr*/
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0, /*tp_as_number*/
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0, /*tp_as_sequence*/
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0, /*tp_as_mapping*/
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0, /*tp_hash */
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0, /*tp_call*/
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0, /*tp_str*/
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0, /*tp_getattro*/
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0, /*tp_setattro*/
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0, /*tp_as_buffer*/
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Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
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textiobase_doc, /* tp_doc */
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0, /* tp_traverse */
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0, /* tp_clear */
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0, /* tp_richcompare */
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0, /* tp_weaklistoffset */
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0, /* tp_iter */
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0, /* tp_iternext */
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textiobase_methods, /* tp_methods */
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0, /* tp_members */
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textiobase_getset, /* tp_getset */
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&PyIOBase_Type, /* tp_base */
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0, /* tp_dict */
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0, /* tp_descr_get */
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0, /* tp_descr_set */
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0, /* tp_dictoffset */
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0, /* tp_init */
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0, /* tp_alloc */
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0, /* tp_new */
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};
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/* IncrementalNewlineDecoder */
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PyDoc_STRVAR(incrementalnewlinedecoder_doc,
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"Codec used when reading a file in universal newlines mode. It wraps\n"
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"another incremental decoder, translating \\r\\n and \\r into \\n. It also\n"
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"records the types of newlines encountered. When used with\n"
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"translate=False, it ensures that the newline sequence is returned in\n"
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"one piece. When used with decoder=None, it expects unicode strings as\n"
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"decode input and translates newlines without first invoking an external\n"
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"decoder.\n"
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);
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typedef struct {
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PyObject_HEAD
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PyObject *decoder;
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PyObject *errors;
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signed int pendingcr: 1;
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signed int translate: 1;
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unsigned int seennl: 3;
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} nldecoder_object;
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static int
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incrementalnewlinedecoder_init(nldecoder_object *self,
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PyObject *args, PyObject *kwds)
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{
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PyObject *decoder;
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int translate;
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PyObject *errors = NULL;
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char *kwlist[] = {"decoder", "translate", "errors", NULL};
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if (!PyArg_ParseTupleAndKeywords(args, kwds, "Oi|O:IncrementalNewlineDecoder",
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kwlist, &decoder, &translate, &errors))
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return -1;
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self->decoder = decoder;
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Py_INCREF(decoder);
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if (errors == NULL) {
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self->errors = PyUnicode_FromString("strict");
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if (self->errors == NULL)
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return -1;
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}
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else {
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Py_INCREF(errors);
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self->errors = errors;
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}
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self->translate = translate;
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self->seennl = 0;
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self->pendingcr = 0;
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return 0;
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}
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static void
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incrementalnewlinedecoder_dealloc(nldecoder_object *self)
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{
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Py_CLEAR(self->decoder);
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Py_CLEAR(self->errors);
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Py_TYPE(self)->tp_free((PyObject *)self);
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}
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#define SEEN_CR 1
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#define SEEN_LF 2
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#define SEEN_CRLF 4
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#define SEEN_ALL (SEEN_CR | SEEN_LF | SEEN_CRLF)
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PyObject *
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_PyIncrementalNewlineDecoder_decode(PyObject *_self,
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PyObject *input, int final)
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{
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PyObject *output;
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Py_ssize_t output_len;
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nldecoder_object *self = (nldecoder_object *) _self;
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if (self->decoder == NULL) {
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PyErr_SetString(PyExc_ValueError,
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"IncrementalNewlineDecoder.__init__ not called");
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return NULL;
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}
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/* decode input (with the eventual \r from a previous pass) */
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if (self->decoder != Py_None) {
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output = PyObject_CallMethodObjArgs(self->decoder,
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_PyIO_str_decode, input, final ? Py_True : Py_False, NULL);
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}
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else {
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output = input;
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Py_INCREF(output);
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}
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if (output == NULL)
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return NULL;
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if (!PyUnicode_Check(output)) {
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PyErr_SetString(PyExc_TypeError,
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"decoder should return a string result");
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goto error;
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}
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output_len = PyUnicode_GET_SIZE(output);
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if (self->pendingcr && (final || output_len > 0)) {
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Py_UNICODE *out;
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PyObject *modified = PyUnicode_FromUnicode(NULL, output_len + 1);
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if (modified == NULL)
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goto error;
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out = PyUnicode_AS_UNICODE(modified);
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out[0] = '\r';
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memcpy(out + 1, PyUnicode_AS_UNICODE(output),
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output_len * sizeof(Py_UNICODE));
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Py_DECREF(output);
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output = modified;
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self->pendingcr = 0;
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output_len++;
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}
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/* retain last \r even when not translating data:
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* then readline() is sure to get \r\n in one pass
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*/
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if (!final) {
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if (output_len > 0
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&& PyUnicode_AS_UNICODE(output)[output_len - 1] == '\r') {
|
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|
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if (Py_REFCNT(output) == 1) {
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if (PyUnicode_Resize(&output, output_len - 1) < 0)
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goto error;
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}
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else {
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PyObject *modified = PyUnicode_FromUnicode(
|
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PyUnicode_AS_UNICODE(output),
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output_len - 1);
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if (modified == NULL)
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goto error;
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Py_DECREF(output);
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output = modified;
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}
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self->pendingcr = 1;
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}
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}
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|
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/* Record which newlines are read and do newline translation if desired,
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all in one pass. */
|
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{
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Py_UNICODE *in_str;
|
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Py_ssize_t len;
|
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int seennl = self->seennl;
|
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int only_lf = 0;
|
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|
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in_str = PyUnicode_AS_UNICODE(output);
|
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len = PyUnicode_GET_SIZE(output);
|
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|
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if (len == 0)
|
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return output;
|
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|
|
/* If, up to now, newlines are consistently \n, do a quick check
|
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for the \r *byte* with the libc's optimized memchr.
|
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*/
|
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if (seennl == SEEN_LF || seennl == 0) {
|
|
only_lf = (memchr(in_str, '\r', len * sizeof(Py_UNICODE)) == NULL);
|
|
}
|
|
|
|
if (only_lf) {
|
|
/* If not already seen, quick scan for a possible "\n" character.
|
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(there's nothing else to be done, even when in translation mode)
|
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*/
|
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if (seennl == 0 &&
|
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memchr(in_str, '\n', len * sizeof(Py_UNICODE)) != NULL) {
|
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Py_UNICODE *s, *end;
|
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s = in_str;
|
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end = in_str + len;
|
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for (;;) {
|
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Py_UNICODE c;
|
|
/* Fast loop for non-control characters */
|
|
while (*s > '\n')
|
|
s++;
|
|
c = *s++;
|
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if (c == '\n') {
|
|
seennl |= SEEN_LF;
|
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break;
|
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}
|
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if (s > end)
|
|
break;
|
|
}
|
|
}
|
|
/* Finished: we have scanned for newlines, and none of them
|
|
need translating */
|
|
}
|
|
else if (!self->translate) {
|
|
Py_UNICODE *s, *end;
|
|
/* We have already seen all newline types, no need to scan again */
|
|
if (seennl == SEEN_ALL)
|
|
goto endscan;
|
|
s = in_str;
|
|
end = in_str + len;
|
|
for (;;) {
|
|
Py_UNICODE c;
|
|
/* Fast loop for non-control characters */
|
|
while (*s > '\r')
|
|
s++;
|
|
c = *s++;
|
|
if (c == '\n')
|
|
seennl |= SEEN_LF;
|
|
else if (c == '\r') {
|
|
if (*s == '\n') {
|
|
seennl |= SEEN_CRLF;
|
|
s++;
|
|
}
|
|
else
|
|
seennl |= SEEN_CR;
|
|
}
|
|
if (s > end)
|
|
break;
|
|
if (seennl == SEEN_ALL)
|
|
break;
|
|
}
|
|
endscan:
|
|
;
|
|
}
|
|
else {
|
|
PyObject *translated = NULL;
|
|
Py_UNICODE *out_str;
|
|
Py_UNICODE *in, *out, *end;
|
|
if (Py_REFCNT(output) != 1) {
|
|
/* We could try to optimize this so that we only do a copy
|
|
when there is something to translate. On the other hand,
|
|
most decoders should only output non-shared strings, i.e.
|
|
translation is done in place. */
|
|
translated = PyUnicode_FromUnicode(NULL, len);
|
|
if (translated == NULL)
|
|
goto error;
|
|
assert(Py_REFCNT(translated) == 1);
|
|
memcpy(PyUnicode_AS_UNICODE(translated),
|
|
PyUnicode_AS_UNICODE(output),
|
|
len * sizeof(Py_UNICODE));
|
|
}
|
|
else {
|
|
translated = output;
|
|
}
|
|
out_str = PyUnicode_AS_UNICODE(translated);
|
|
in = in_str;
|
|
out = out_str;
|
|
end = in_str + len;
|
|
for (;;) {
|
|
Py_UNICODE c;
|
|
/* Fast loop for non-control characters */
|
|
while ((c = *in++) > '\r')
|
|
*out++ = c;
|
|
if (c == '\n') {
|
|
*out++ = c;
|
|
seennl |= SEEN_LF;
|
|
continue;
|
|
}
|
|
if (c == '\r') {
|
|
if (*in == '\n') {
|
|
in++;
|
|
seennl |= SEEN_CRLF;
|
|
}
|
|
else
|
|
seennl |= SEEN_CR;
|
|
*out++ = '\n';
|
|
continue;
|
|
}
|
|
if (in > end)
|
|
break;
|
|
*out++ = c;
|
|
}
|
|
if (translated != output) {
|
|
Py_DECREF(output);
|
|
output = translated;
|
|
}
|
|
if (out - out_str != len) {
|
|
if (PyUnicode_Resize(&output, out - out_str) < 0)
|
|
goto error;
|
|
}
|
|
}
|
|
self->seennl |= seennl;
|
|
}
|
|
|
|
return output;
|
|
|
|
error:
|
|
Py_DECREF(output);
|
|
return NULL;
|
|
}
|
|
|
|
static PyObject *
|
|
incrementalnewlinedecoder_decode(nldecoder_object *self,
|
|
PyObject *args, PyObject *kwds)
|
|
{
|
|
char *kwlist[] = {"input", "final", NULL};
|
|
PyObject *input;
|
|
int final = 0;
|
|
|
|
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|i:IncrementalNewlineDecoder",
|
|
kwlist, &input, &final))
|
|
return NULL;
|
|
return _PyIncrementalNewlineDecoder_decode((PyObject *) self, input, final);
|
|
}
|
|
|
|
static PyObject *
|
|
incrementalnewlinedecoder_getstate(nldecoder_object *self, PyObject *args)
|
|
{
|
|
PyObject *buffer;
|
|
unsigned PY_LONG_LONG flag;
|
|
|
|
if (self->decoder != Py_None) {
|
|
PyObject *state = PyObject_CallMethodObjArgs(self->decoder,
|
|
_PyIO_str_getstate, NULL);
|
|
if (state == NULL)
|
|
return NULL;
|
|
if (!PyArg_Parse(state, "(OK)", &buffer, &flag)) {
|
|
Py_DECREF(state);
|
|
return NULL;
|
|
}
|
|
Py_INCREF(buffer);
|
|
Py_DECREF(state);
|
|
}
|
|
else {
|
|
buffer = PyBytes_FromString("");
|
|
flag = 0;
|
|
}
|
|
flag <<= 1;
|
|
if (self->pendingcr)
|
|
flag |= 1;
|
|
return Py_BuildValue("NK", buffer, flag);
|
|
}
|
|
|
|
static PyObject *
|
|
incrementalnewlinedecoder_setstate(nldecoder_object *self, PyObject *state)
|
|
{
|
|
PyObject *buffer;
|
|
unsigned PY_LONG_LONG flag;
|
|
|
|
if (!PyArg_Parse(state, "(OK)", &buffer, &flag))
|
|
return NULL;
|
|
|
|
self->pendingcr = (int) flag & 1;
|
|
flag >>= 1;
|
|
|
|
if (self->decoder != Py_None)
|
|
return PyObject_CallMethod(self->decoder,
|
|
"setstate", "((OK))", buffer, flag);
|
|
else
|
|
Py_RETURN_NONE;
|
|
}
|
|
|
|
static PyObject *
|
|
incrementalnewlinedecoder_reset(nldecoder_object *self, PyObject *args)
|
|
{
|
|
self->seennl = 0;
|
|
self->pendingcr = 0;
|
|
if (self->decoder != Py_None)
|
|
return PyObject_CallMethodObjArgs(self->decoder, _PyIO_str_reset, NULL);
|
|
else
|
|
Py_RETURN_NONE;
|
|
}
|
|
|
|
static PyObject *
|
|
incrementalnewlinedecoder_newlines_get(nldecoder_object *self, void *context)
|
|
{
|
|
switch (self->seennl) {
|
|
case SEEN_CR:
|
|
return PyUnicode_FromString("\r");
|
|
case SEEN_LF:
|
|
return PyUnicode_FromString("\n");
|
|
case SEEN_CRLF:
|
|
return PyUnicode_FromString("\r\n");
|
|
case SEEN_CR | SEEN_LF:
|
|
return Py_BuildValue("ss", "\r", "\n");
|
|
case SEEN_CR | SEEN_CRLF:
|
|
return Py_BuildValue("ss", "\r", "\r\n");
|
|
case SEEN_LF | SEEN_CRLF:
|
|
return Py_BuildValue("ss", "\n", "\r\n");
|
|
case SEEN_CR | SEEN_LF | SEEN_CRLF:
|
|
return Py_BuildValue("sss", "\r", "\n", "\r\n");
|
|
default:
|
|
Py_RETURN_NONE;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
static PyMethodDef incrementalnewlinedecoder_methods[] = {
|
|
{"decode", (PyCFunction)incrementalnewlinedecoder_decode, METH_VARARGS|METH_KEYWORDS},
|
|
{"getstate", (PyCFunction)incrementalnewlinedecoder_getstate, METH_NOARGS},
|
|
{"setstate", (PyCFunction)incrementalnewlinedecoder_setstate, METH_O},
|
|
{"reset", (PyCFunction)incrementalnewlinedecoder_reset, METH_NOARGS},
|
|
{NULL}
|
|
};
|
|
|
|
static PyGetSetDef incrementalnewlinedecoder_getset[] = {
|
|
{"newlines", (getter)incrementalnewlinedecoder_newlines_get, NULL, NULL},
|
|
{NULL}
|
|
};
|
|
|
|
PyTypeObject PyIncrementalNewlineDecoder_Type = {
|
|
PyVarObject_HEAD_INIT(NULL, 0)
|
|
"_io.IncrementalNewlineDecoder", /*tp_name*/
|
|
sizeof(nldecoder_object), /*tp_basicsize*/
|
|
0, /*tp_itemsize*/
|
|
(destructor)incrementalnewlinedecoder_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 | Py_TPFLAGS_BASETYPE, /*tp_flags*/
|
|
incrementalnewlinedecoder_doc, /* tp_doc */
|
|
0, /* tp_traverse */
|
|
0, /* tp_clear */
|
|
0, /* tp_richcompare */
|
|
0, /*tp_weaklistoffset*/
|
|
0, /* tp_iter */
|
|
0, /* tp_iternext */
|
|
incrementalnewlinedecoder_methods, /* tp_methods */
|
|
0, /* tp_members */
|
|
incrementalnewlinedecoder_getset, /* tp_getset */
|
|
0, /* tp_base */
|
|
0, /* tp_dict */
|
|
0, /* tp_descr_get */
|
|
0, /* tp_descr_set */
|
|
0, /* tp_dictoffset */
|
|
(initproc)incrementalnewlinedecoder_init, /* tp_init */
|
|
0, /* tp_alloc */
|
|
PyType_GenericNew, /* tp_new */
|
|
};
|
|
|
|
|
|
/* TextIOWrapper */
|
|
|
|
PyDoc_STRVAR(textiowrapper_doc,
|
|
"Character and line based layer over a BufferedIOBase object, buffer.\n"
|
|
"\n"
|
|
"encoding gives the name of the encoding that the stream will be\n"
|
|
"decoded or encoded with. It defaults to locale.getpreferredencoding.\n"
|
|
"\n"
|
|
"errors determines the strictness of encoding and decoding (see the\n"
|
|
"codecs.register) and defaults to \"strict\".\n"
|
|
"\n"
|
|
"newline can be None, '', '\\n', '\\r', or '\\r\\n'. It controls the\n"
|
|
"handling of line endings. If it is None, universal newlines is\n"
|
|
"enabled. With this enabled, on input, the lines endings '\\n', '\\r',\n"
|
|
"or '\\r\\n' are translated to '\\n' before being returned to the\n"
|
|
"caller. Conversely, on output, '\\n' is translated to the system\n"
|
|
"default line seperator, os.linesep. If newline is any other of its\n"
|
|
"legal values, that newline becomes the newline when the file is read\n"
|
|
"and it is returned untranslated. On output, '\\n' is converted to the\n"
|
|
"newline.\n"
|
|
"\n"
|
|
"If line_buffering is True, a call to flush is implied when a call to\n"
|
|
"write contains a newline character."
|
|
);
|
|
|
|
typedef PyObject *
|
|
(*encodefunc_t)(PyObject *, PyObject *);
|
|
|
|
typedef struct
|
|
{
|
|
PyObject_HEAD
|
|
int ok; /* initialized? */
|
|
int detached;
|
|
Py_ssize_t chunk_size;
|
|
PyObject *buffer;
|
|
PyObject *encoding;
|
|
PyObject *encoder;
|
|
PyObject *decoder;
|
|
PyObject *readnl;
|
|
PyObject *errors;
|
|
const char *writenl; /* utf-8 encoded, NULL stands for \n */
|
|
char line_buffering;
|
|
char readuniversal;
|
|
char readtranslate;
|
|
char writetranslate;
|
|
char seekable;
|
|
char telling;
|
|
/* Specialized encoding func (see below) */
|
|
encodefunc_t encodefunc;
|
|
/* Whether or not it's the start of the stream */
|
|
char encoding_start_of_stream;
|
|
|
|
/* Reads and writes are internally buffered in order to speed things up.
|
|
However, any read will first flush the write buffer if itsn't empty.
|
|
|
|
Please also note that text to be written is first encoded before being
|
|
buffered. This is necessary so that encoding errors are immediately
|
|
reported to the caller, but it unfortunately means that the
|
|
IncrementalEncoder (whose encode() method is always written in Python)
|
|
becomes a bottleneck for small writes.
|
|
*/
|
|
PyObject *decoded_chars; /* buffer for text returned from decoder */
|
|
Py_ssize_t decoded_chars_used; /* offset into _decoded_chars for read() */
|
|
PyObject *pending_bytes; /* list of bytes objects waiting to be
|
|
written, or NULL */
|
|
Py_ssize_t pending_bytes_count;
|
|
PyObject *snapshot;
|
|
/* snapshot is either None, or a tuple (dec_flags, next_input) where
|
|
* dec_flags is the second (integer) item of the decoder state and
|
|
* next_input is the chunk of input bytes that comes next after the
|
|
* snapshot point. We use this to reconstruct decoder states in tell().
|
|
*/
|
|
|
|
/* Cache raw object if it's a FileIO object */
|
|
PyObject *raw;
|
|
|
|
PyObject *weakreflist;
|
|
PyObject *dict;
|
|
} textio;
|
|
|
|
|
|
/* A couple of specialized cases in order to bypass the slow incremental
|
|
encoding methods for the most popular encodings. */
|
|
|
|
static PyObject *
|
|
ascii_encode(textio *self, PyObject *text)
|
|
{
|
|
return PyUnicode_EncodeASCII(PyUnicode_AS_UNICODE(text),
|
|
PyUnicode_GET_SIZE(text),
|
|
PyBytes_AS_STRING(self->errors));
|
|
}
|
|
|
|
static PyObject *
|
|
utf16be_encode(textio *self, PyObject *text)
|
|
{
|
|
return PyUnicode_EncodeUTF16(PyUnicode_AS_UNICODE(text),
|
|
PyUnicode_GET_SIZE(text),
|
|
PyBytes_AS_STRING(self->errors), 1);
|
|
}
|
|
|
|
static PyObject *
|
|
utf16le_encode(textio *self, PyObject *text)
|
|
{
|
|
return PyUnicode_EncodeUTF16(PyUnicode_AS_UNICODE(text),
|
|
PyUnicode_GET_SIZE(text),
|
|
PyBytes_AS_STRING(self->errors), -1);
|
|
}
|
|
|
|
static PyObject *
|
|
utf16_encode(textio *self, PyObject *text)
|
|
{
|
|
if (!self->encoding_start_of_stream) {
|
|
/* Skip the BOM and use native byte ordering */
|
|
#if defined(WORDS_BIGENDIAN)
|
|
return utf16be_encode(self, text);
|
|
#else
|
|
return utf16le_encode(self, text);
|
|
#endif
|
|
}
|
|
return PyUnicode_EncodeUTF16(PyUnicode_AS_UNICODE(text),
|
|
PyUnicode_GET_SIZE(text),
|
|
PyBytes_AS_STRING(self->errors), 0);
|
|
}
|
|
|
|
static PyObject *
|
|
utf32be_encode(textio *self, PyObject *text)
|
|
{
|
|
return PyUnicode_EncodeUTF32(PyUnicode_AS_UNICODE(text),
|
|
PyUnicode_GET_SIZE(text),
|
|
PyBytes_AS_STRING(self->errors), 1);
|
|
}
|
|
|
|
static PyObject *
|
|
utf32le_encode(textio *self, PyObject *text)
|
|
{
|
|
return PyUnicode_EncodeUTF32(PyUnicode_AS_UNICODE(text),
|
|
PyUnicode_GET_SIZE(text),
|
|
PyBytes_AS_STRING(self->errors), -1);
|
|
}
|
|
|
|
static PyObject *
|
|
utf32_encode(textio *self, PyObject *text)
|
|
{
|
|
if (!self->encoding_start_of_stream) {
|
|
/* Skip the BOM and use native byte ordering */
|
|
#if defined(WORDS_BIGENDIAN)
|
|
return utf32be_encode(self, text);
|
|
#else
|
|
return utf32le_encode(self, text);
|
|
#endif
|
|
}
|
|
return PyUnicode_EncodeUTF32(PyUnicode_AS_UNICODE(text),
|
|
PyUnicode_GET_SIZE(text),
|
|
PyBytes_AS_STRING(self->errors), 0);
|
|
}
|
|
|
|
static PyObject *
|
|
utf8_encode(textio *self, PyObject *text)
|
|
{
|
|
return PyUnicode_EncodeUTF8(PyUnicode_AS_UNICODE(text),
|
|
PyUnicode_GET_SIZE(text),
|
|
PyBytes_AS_STRING(self->errors));
|
|
}
|
|
|
|
static PyObject *
|
|
latin1_encode(textio *self, PyObject *text)
|
|
{
|
|
return PyUnicode_EncodeLatin1(PyUnicode_AS_UNICODE(text),
|
|
PyUnicode_GET_SIZE(text),
|
|
PyBytes_AS_STRING(self->errors));
|
|
}
|
|
|
|
/* Map normalized encoding names onto the specialized encoding funcs */
|
|
|
|
typedef struct {
|
|
const char *name;
|
|
encodefunc_t encodefunc;
|
|
} encodefuncentry;
|
|
|
|
static encodefuncentry encodefuncs[] = {
|
|
{"ascii", (encodefunc_t) ascii_encode},
|
|
{"iso8859-1", (encodefunc_t) latin1_encode},
|
|
{"utf-8", (encodefunc_t) utf8_encode},
|
|
{"utf-16-be", (encodefunc_t) utf16be_encode},
|
|
{"utf-16-le", (encodefunc_t) utf16le_encode},
|
|
{"utf-16", (encodefunc_t) utf16_encode},
|
|
{"utf-32-be", (encodefunc_t) utf32be_encode},
|
|
{"utf-32-le", (encodefunc_t) utf32le_encode},
|
|
{"utf-32", (encodefunc_t) utf32_encode},
|
|
{NULL, NULL}
|
|
};
|
|
|
|
|
|
static int
|
|
textiowrapper_init(textio *self, PyObject *args, PyObject *kwds)
|
|
{
|
|
char *kwlist[] = {"buffer", "encoding", "errors",
|
|
"newline", "line_buffering",
|
|
NULL};
|
|
PyObject *buffer, *raw;
|
|
char *encoding = NULL;
|
|
char *errors = NULL;
|
|
char *newline = NULL;
|
|
int line_buffering = 0;
|
|
|
|
PyObject *res;
|
|
int r;
|
|
|
|
self->ok = 0;
|
|
self->detached = 0;
|
|
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|zzzi:fileio",
|
|
kwlist, &buffer, &encoding, &errors,
|
|
&newline, &line_buffering))
|
|
return -1;
|
|
|
|
if (newline && newline[0] != '\0'
|
|
&& !(newline[0] == '\n' && newline[1] == '\0')
|
|
&& !(newline[0] == '\r' && newline[1] == '\0')
|
|
&& !(newline[0] == '\r' && newline[1] == '\n' && newline[2] == '\0')) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"illegal newline value: %s", newline);
|
|
return -1;
|
|
}
|
|
|
|
Py_CLEAR(self->buffer);
|
|
Py_CLEAR(self->encoding);
|
|
Py_CLEAR(self->encoder);
|
|
Py_CLEAR(self->decoder);
|
|
Py_CLEAR(self->readnl);
|
|
Py_CLEAR(self->decoded_chars);
|
|
Py_CLEAR(self->pending_bytes);
|
|
Py_CLEAR(self->snapshot);
|
|
Py_CLEAR(self->errors);
|
|
Py_CLEAR(self->raw);
|
|
self->decoded_chars_used = 0;
|
|
self->pending_bytes_count = 0;
|
|
self->encodefunc = NULL;
|
|
self->writenl = NULL;
|
|
|
|
if (encoding == NULL && self->encoding == NULL) {
|
|
if (_PyIO_locale_module == NULL) {
|
|
_PyIO_locale_module = PyImport_ImportModule("locale");
|
|
if (_PyIO_locale_module == NULL)
|
|
goto catch_ImportError;
|
|
else
|
|
goto use_locale;
|
|
}
|
|
else {
|
|
use_locale:
|
|
self->encoding = PyObject_CallMethod(
|
|
_PyIO_locale_module, "getpreferredencoding", NULL);
|
|
if (self->encoding == NULL) {
|
|
catch_ImportError:
|
|
/*
|
|
Importing locale can raise a ImportError because of
|
|
_functools, and locale.getpreferredencoding can raise a
|
|
ImportError if _locale is not available. These will happen
|
|
during module building.
|
|
*/
|
|
if (PyErr_ExceptionMatches(PyExc_ImportError)) {
|
|
PyErr_Clear();
|
|
self->encoding = PyString_FromString("ascii");
|
|
}
|
|
else
|
|
goto error;
|
|
}
|
|
else if (!PyString_Check(self->encoding))
|
|
Py_CLEAR(self->encoding);
|
|
}
|
|
}
|
|
if (self->encoding != NULL)
|
|
encoding = PyString_AsString(self->encoding);
|
|
else if (encoding != NULL) {
|
|
self->encoding = PyString_FromString(encoding);
|
|
if (self->encoding == NULL)
|
|
goto error;
|
|
}
|
|
else {
|
|
PyErr_SetString(PyExc_IOError,
|
|
"could not determine default encoding");
|
|
}
|
|
|
|
if (errors == NULL)
|
|
errors = "strict";
|
|
self->errors = PyBytes_FromString(errors);
|
|
if (self->errors == NULL)
|
|
goto error;
|
|
|
|
self->chunk_size = 8192;
|
|
self->readuniversal = (newline == NULL || newline[0] == '\0');
|
|
self->line_buffering = line_buffering;
|
|
self->readtranslate = (newline == NULL);
|
|
if (newline) {
|
|
self->readnl = PyString_FromString(newline);
|
|
if (self->readnl == NULL)
|
|
return -1;
|
|
}
|
|
self->writetranslate = (newline == NULL || newline[0] != '\0');
|
|
if (!self->readuniversal && self->writetranslate) {
|
|
self->writenl = PyString_AsString(self->readnl);
|
|
if (!strcmp(self->writenl, "\n"))
|
|
self->writenl = NULL;
|
|
}
|
|
#ifdef MS_WINDOWS
|
|
else
|
|
self->writenl = "\r\n";
|
|
#endif
|
|
|
|
/* Build the decoder object */
|
|
res = PyObject_CallMethod(buffer, "readable", NULL);
|
|
if (res == NULL)
|
|
goto error;
|
|
r = PyObject_IsTrue(res);
|
|
Py_DECREF(res);
|
|
if (r == -1)
|
|
goto error;
|
|
if (r == 1) {
|
|
self->decoder = PyCodec_IncrementalDecoder(
|
|
encoding, errors);
|
|
if (self->decoder == NULL)
|
|
goto error;
|
|
|
|
if (self->readuniversal) {
|
|
PyObject *incrementalDecoder = PyObject_CallFunction(
|
|
(PyObject *)&PyIncrementalNewlineDecoder_Type,
|
|
"Oi", self->decoder, (int)self->readtranslate);
|
|
if (incrementalDecoder == NULL)
|
|
goto error;
|
|
Py_CLEAR(self->decoder);
|
|
self->decoder = incrementalDecoder;
|
|
}
|
|
}
|
|
|
|
/* Build the encoder object */
|
|
res = PyObject_CallMethod(buffer, "writable", NULL);
|
|
if (res == NULL)
|
|
goto error;
|
|
r = PyObject_IsTrue(res);
|
|
Py_DECREF(res);
|
|
if (r == -1)
|
|
goto error;
|
|
if (r == 1) {
|
|
PyObject *ci;
|
|
self->encoder = PyCodec_IncrementalEncoder(
|
|
encoding, errors);
|
|
if (self->encoder == NULL)
|
|
goto error;
|
|
/* Get the normalized named of the codec */
|
|
ci = _PyCodec_Lookup(encoding);
|
|
if (ci == NULL)
|
|
goto error;
|
|
res = PyObject_GetAttrString(ci, "name");
|
|
Py_DECREF(ci);
|
|
if (res == NULL) {
|
|
if (PyErr_ExceptionMatches(PyExc_AttributeError))
|
|
PyErr_Clear();
|
|
else
|
|
goto error;
|
|
}
|
|
else if (PyString_Check(res)) {
|
|
encodefuncentry *e = encodefuncs;
|
|
while (e->name != NULL) {
|
|
if (!strcmp(PyString_AS_STRING(res), e->name)) {
|
|
self->encodefunc = e->encodefunc;
|
|
break;
|
|
}
|
|
e++;
|
|
}
|
|
}
|
|
Py_XDECREF(res);
|
|
}
|
|
|
|
self->buffer = buffer;
|
|
Py_INCREF(buffer);
|
|
|
|
if (Py_TYPE(buffer) == &PyBufferedReader_Type ||
|
|
Py_TYPE(buffer) == &PyBufferedWriter_Type ||
|
|
Py_TYPE(buffer) == &PyBufferedRandom_Type) {
|
|
raw = PyObject_GetAttrString(buffer, "raw");
|
|
/* Cache the raw FileIO object to speed up 'closed' checks */
|
|
if (raw == NULL) {
|
|
if (PyErr_ExceptionMatches(PyExc_AttributeError))
|
|
PyErr_Clear();
|
|
else
|
|
goto error;
|
|
}
|
|
else if (Py_TYPE(raw) == &PyFileIO_Type)
|
|
self->raw = raw;
|
|
else
|
|
Py_DECREF(raw);
|
|
}
|
|
|
|
res = PyObject_CallMethod(buffer, "seekable", NULL);
|
|
if (res == NULL)
|
|
goto error;
|
|
self->seekable = self->telling = PyObject_IsTrue(res);
|
|
Py_DECREF(res);
|
|
|
|
self->encoding_start_of_stream = 0;
|
|
if (self->seekable && self->encoder) {
|
|
PyObject *cookieObj;
|
|
int cmp;
|
|
|
|
self->encoding_start_of_stream = 1;
|
|
|
|
cookieObj = PyObject_CallMethodObjArgs(buffer, _PyIO_str_tell, NULL);
|
|
if (cookieObj == NULL)
|
|
goto error;
|
|
|
|
cmp = PyObject_RichCompareBool(cookieObj, _PyIO_zero, Py_EQ);
|
|
Py_DECREF(cookieObj);
|
|
if (cmp < 0) {
|
|
goto error;
|
|
}
|
|
|
|
if (cmp == 0) {
|
|
self->encoding_start_of_stream = 0;
|
|
res = PyObject_CallMethodObjArgs(self->encoder, _PyIO_str_setstate,
|
|
_PyIO_zero, NULL);
|
|
if (res == NULL)
|
|
goto error;
|
|
Py_DECREF(res);
|
|
}
|
|
}
|
|
|
|
self->ok = 1;
|
|
return 0;
|
|
|
|
error:
|
|
return -1;
|
|
}
|
|
|
|
static int
|
|
_textiowrapper_clear(textio *self)
|
|
{
|
|
if (self->ok && _PyIOBase_finalize((PyObject *) self) < 0)
|
|
return -1;
|
|
self->ok = 0;
|
|
Py_CLEAR(self->buffer);
|
|
Py_CLEAR(self->encoding);
|
|
Py_CLEAR(self->encoder);
|
|
Py_CLEAR(self->decoder);
|
|
Py_CLEAR(self->readnl);
|
|
Py_CLEAR(self->decoded_chars);
|
|
Py_CLEAR(self->pending_bytes);
|
|
Py_CLEAR(self->snapshot);
|
|
Py_CLEAR(self->errors);
|
|
Py_CLEAR(self->raw);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
textiowrapper_dealloc(textio *self)
|
|
{
|
|
if (_textiowrapper_clear(self) < 0)
|
|
return;
|
|
_PyObject_GC_UNTRACK(self);
|
|
if (self->weakreflist != NULL)
|
|
PyObject_ClearWeakRefs((PyObject *)self);
|
|
Py_CLEAR(self->dict);
|
|
Py_TYPE(self)->tp_free((PyObject *)self);
|
|
}
|
|
|
|
static int
|
|
textiowrapper_traverse(textio *self, visitproc visit, void *arg)
|
|
{
|
|
Py_VISIT(self->buffer);
|
|
Py_VISIT(self->encoding);
|
|
Py_VISIT(self->encoder);
|
|
Py_VISIT(self->decoder);
|
|
Py_VISIT(self->readnl);
|
|
Py_VISIT(self->decoded_chars);
|
|
Py_VISIT(self->pending_bytes);
|
|
Py_VISIT(self->snapshot);
|
|
Py_VISIT(self->errors);
|
|
Py_VISIT(self->raw);
|
|
|
|
Py_VISIT(self->dict);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
textiowrapper_clear(textio *self)
|
|
{
|
|
if (_textiowrapper_clear(self) < 0)
|
|
return -1;
|
|
Py_CLEAR(self->dict);
|
|
return 0;
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_closed_get(textio *self, void *context);
|
|
|
|
/* This macro takes some shortcuts to make the common case faster. */
|
|
#define CHECK_CLOSED(self) \
|
|
do { \
|
|
int r; \
|
|
PyObject *_res; \
|
|
if (Py_TYPE(self) == &PyTextIOWrapper_Type) { \
|
|
if (self->raw != NULL) \
|
|
r = _PyFileIO_closed(self->raw); \
|
|
else { \
|
|
_res = textiowrapper_closed_get(self, NULL); \
|
|
if (_res == NULL) \
|
|
return NULL; \
|
|
r = PyObject_IsTrue(_res); \
|
|
Py_DECREF(_res); \
|
|
if (r < 0) \
|
|
return NULL; \
|
|
} \
|
|
if (r > 0) { \
|
|
PyErr_SetString(PyExc_ValueError, \
|
|
"I/O operation on closed file."); \
|
|
return NULL; \
|
|
} \
|
|
} \
|
|
else if (_PyIOBase_check_closed((PyObject *)self, Py_True) == NULL) \
|
|
return NULL; \
|
|
} while (0)
|
|
|
|
#define CHECK_INITIALIZED(self) \
|
|
if (self->ok <= 0) { \
|
|
if (self->detached) { \
|
|
PyErr_SetString(PyExc_ValueError, \
|
|
"underlying buffer has been detached"); \
|
|
} else { \
|
|
PyErr_SetString(PyExc_ValueError, \
|
|
"I/O operation on uninitialized object"); \
|
|
} \
|
|
return NULL; \
|
|
}
|
|
|
|
#define CHECK_INITIALIZED_INT(self) \
|
|
if (self->ok <= 0) { \
|
|
if (self->detached) { \
|
|
PyErr_SetString(PyExc_ValueError, \
|
|
"underlying buffer has been detached"); \
|
|
} else { \
|
|
PyErr_SetString(PyExc_ValueError, \
|
|
"I/O operation on uninitialized object"); \
|
|
} \
|
|
return -1; \
|
|
}
|
|
|
|
|
|
static PyObject *
|
|
textiowrapper_detach(textio *self)
|
|
{
|
|
PyObject *buffer, *res;
|
|
CHECK_INITIALIZED(self);
|
|
res = PyObject_CallMethodObjArgs((PyObject *)self, _PyIO_str_flush, NULL);
|
|
if (res == NULL)
|
|
return NULL;
|
|
Py_DECREF(res);
|
|
buffer = self->buffer;
|
|
self->buffer = NULL;
|
|
self->detached = 1;
|
|
self->ok = 0;
|
|
return buffer;
|
|
}
|
|
|
|
Py_LOCAL_INLINE(const Py_UNICODE *)
|
|
findchar(const Py_UNICODE *s, Py_ssize_t size, Py_UNICODE ch)
|
|
{
|
|
/* like wcschr, but doesn't stop at NULL characters */
|
|
while (size-- > 0) {
|
|
if (*s == ch)
|
|
return s;
|
|
s++;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* Flush the internal write buffer. This doesn't explicitly flush the
|
|
underlying buffered object, though. */
|
|
static int
|
|
_textiowrapper_writeflush(textio *self)
|
|
{
|
|
PyObject *pending, *b, *ret;
|
|
|
|
if (self->pending_bytes == NULL)
|
|
return 0;
|
|
|
|
pending = self->pending_bytes;
|
|
Py_INCREF(pending);
|
|
self->pending_bytes_count = 0;
|
|
Py_CLEAR(self->pending_bytes);
|
|
|
|
b = _PyBytes_Join(_PyIO_empty_bytes, pending);
|
|
Py_DECREF(pending);
|
|
if (b == NULL)
|
|
return -1;
|
|
ret = PyObject_CallMethodObjArgs(self->buffer,
|
|
_PyIO_str_write, b, NULL);
|
|
Py_DECREF(b);
|
|
if (ret == NULL)
|
|
return -1;
|
|
Py_DECREF(ret);
|
|
return 0;
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_write(textio *self, PyObject *args)
|
|
{
|
|
PyObject *ret;
|
|
PyObject *text; /* owned reference */
|
|
PyObject *b;
|
|
Py_ssize_t textlen;
|
|
int haslf = 0;
|
|
int needflush = 0;
|
|
|
|
CHECK_INITIALIZED(self);
|
|
|
|
if (!PyArg_ParseTuple(args, "U:write", &text)) {
|
|
return NULL;
|
|
}
|
|
|
|
CHECK_CLOSED(self);
|
|
|
|
if (self->encoder == NULL) {
|
|
PyErr_SetString(PyExc_IOError, "not writable");
|
|
return NULL;
|
|
}
|
|
|
|
Py_INCREF(text);
|
|
|
|
textlen = PyUnicode_GetSize(text);
|
|
|
|
if ((self->writetranslate && self->writenl != NULL) || self->line_buffering)
|
|
if (findchar(PyUnicode_AS_UNICODE(text),
|
|
PyUnicode_GET_SIZE(text), '\n'))
|
|
haslf = 1;
|
|
|
|
if (haslf && self->writetranslate && self->writenl != NULL) {
|
|
PyObject *newtext = PyObject_CallMethod(
|
|
text, "replace", "ss", "\n", self->writenl);
|
|
Py_DECREF(text);
|
|
if (newtext == NULL)
|
|
return NULL;
|
|
text = newtext;
|
|
}
|
|
|
|
if (self->line_buffering &&
|
|
(haslf ||
|
|
findchar(PyUnicode_AS_UNICODE(text),
|
|
PyUnicode_GET_SIZE(text), '\r')))
|
|
needflush = 1;
|
|
|
|
/* XXX What if we were just reading? */
|
|
if (self->encodefunc != NULL) {
|
|
b = (*self->encodefunc)((PyObject *) self, text);
|
|
self->encoding_start_of_stream = 0;
|
|
}
|
|
else
|
|
b = PyObject_CallMethodObjArgs(self->encoder,
|
|
_PyIO_str_encode, text, NULL);
|
|
Py_DECREF(text);
|
|
if (b == NULL)
|
|
return NULL;
|
|
|
|
if (self->pending_bytes == NULL) {
|
|
self->pending_bytes = PyList_New(0);
|
|
if (self->pending_bytes == NULL) {
|
|
Py_DECREF(b);
|
|
return NULL;
|
|
}
|
|
self->pending_bytes_count = 0;
|
|
}
|
|
if (PyList_Append(self->pending_bytes, b) < 0) {
|
|
Py_DECREF(b);
|
|
return NULL;
|
|
}
|
|
self->pending_bytes_count += PyBytes_GET_SIZE(b);
|
|
Py_DECREF(b);
|
|
if (self->pending_bytes_count > self->chunk_size || needflush) {
|
|
if (_textiowrapper_writeflush(self) < 0)
|
|
return NULL;
|
|
}
|
|
|
|
if (needflush) {
|
|
ret = PyObject_CallMethodObjArgs(self->buffer, _PyIO_str_flush, NULL);
|
|
if (ret == NULL)
|
|
return NULL;
|
|
Py_DECREF(ret);
|
|
}
|
|
|
|
Py_CLEAR(self->snapshot);
|
|
|
|
if (self->decoder) {
|
|
ret = PyObject_CallMethod(self->decoder, "reset", NULL);
|
|
if (ret == NULL)
|
|
return NULL;
|
|
Py_DECREF(ret);
|
|
}
|
|
|
|
return PyLong_FromSsize_t(textlen);
|
|
}
|
|
|
|
/* Steal a reference to chars and store it in the decoded_char buffer;
|
|
*/
|
|
static void
|
|
textiowrapper_set_decoded_chars(textio *self, PyObject *chars)
|
|
{
|
|
Py_CLEAR(self->decoded_chars);
|
|
self->decoded_chars = chars;
|
|
self->decoded_chars_used = 0;
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_get_decoded_chars(textio *self, Py_ssize_t n)
|
|
{
|
|
PyObject *chars;
|
|
Py_ssize_t avail;
|
|
|
|
if (self->decoded_chars == NULL)
|
|
return PyUnicode_FromStringAndSize(NULL, 0);
|
|
|
|
avail = (PyUnicode_GET_SIZE(self->decoded_chars)
|
|
- self->decoded_chars_used);
|
|
|
|
assert(avail >= 0);
|
|
|
|
if (n < 0 || n > avail)
|
|
n = avail;
|
|
|
|
if (self->decoded_chars_used > 0 || n < avail) {
|
|
chars = PyUnicode_FromUnicode(
|
|
PyUnicode_AS_UNICODE(self->decoded_chars)
|
|
+ self->decoded_chars_used, n);
|
|
if (chars == NULL)
|
|
return NULL;
|
|
}
|
|
else {
|
|
chars = self->decoded_chars;
|
|
Py_INCREF(chars);
|
|
}
|
|
|
|
self->decoded_chars_used += n;
|
|
return chars;
|
|
}
|
|
|
|
/* Read and decode the next chunk of data from the BufferedReader.
|
|
*/
|
|
static int
|
|
textiowrapper_read_chunk(textio *self)
|
|
{
|
|
PyObject *dec_buffer = NULL;
|
|
PyObject *dec_flags = NULL;
|
|
PyObject *input_chunk = NULL;
|
|
PyObject *decoded_chars, *chunk_size;
|
|
int eof;
|
|
|
|
/* The return value is True unless EOF was reached. The decoded string is
|
|
* placed in self._decoded_chars (replacing its previous value). The
|
|
* entire input chunk is sent to the decoder, though some of it may remain
|
|
* buffered in the decoder, yet to be converted.
|
|
*/
|
|
|
|
if (self->decoder == NULL) {
|
|
PyErr_SetString(PyExc_IOError, "not readable");
|
|
return -1;
|
|
}
|
|
|
|
if (self->telling) {
|
|
/* To prepare for tell(), we need to snapshot a point in the file
|
|
* where the decoder's input buffer is empty.
|
|
*/
|
|
|
|
PyObject *state = PyObject_CallMethodObjArgs(self->decoder,
|
|
_PyIO_str_getstate, NULL);
|
|
if (state == NULL)
|
|
return -1;
|
|
/* Given this, we know there was a valid snapshot point
|
|
* len(dec_buffer) bytes ago with decoder state (b'', dec_flags).
|
|
*/
|
|
if (PyArg_Parse(state, "(OO)", &dec_buffer, &dec_flags) < 0) {
|
|
Py_DECREF(state);
|
|
return -1;
|
|
}
|
|
Py_INCREF(dec_buffer);
|
|
Py_INCREF(dec_flags);
|
|
Py_DECREF(state);
|
|
}
|
|
|
|
/* Read a chunk, decode it, and put the result in self._decoded_chars. */
|
|
chunk_size = PyLong_FromSsize_t(self->chunk_size);
|
|
if (chunk_size == NULL)
|
|
goto fail;
|
|
input_chunk = PyObject_CallMethodObjArgs(self->buffer,
|
|
_PyIO_str_read1, chunk_size, NULL);
|
|
Py_DECREF(chunk_size);
|
|
if (input_chunk == NULL)
|
|
goto fail;
|
|
assert(PyBytes_Check(input_chunk));
|
|
|
|
eof = (PyBytes_Size(input_chunk) == 0);
|
|
|
|
if (Py_TYPE(self->decoder) == &PyIncrementalNewlineDecoder_Type) {
|
|
decoded_chars = _PyIncrementalNewlineDecoder_decode(
|
|
self->decoder, input_chunk, eof);
|
|
}
|
|
else {
|
|
decoded_chars = PyObject_CallMethodObjArgs(self->decoder,
|
|
_PyIO_str_decode, input_chunk, eof ? Py_True : Py_False, NULL);
|
|
}
|
|
|
|
/* TODO sanity check: isinstance(decoded_chars, unicode) */
|
|
if (decoded_chars == NULL)
|
|
goto fail;
|
|
textiowrapper_set_decoded_chars(self, decoded_chars);
|
|
if (PyUnicode_GET_SIZE(decoded_chars) > 0)
|
|
eof = 0;
|
|
|
|
if (self->telling) {
|
|
/* At the snapshot point, len(dec_buffer) bytes before the read, the
|
|
* next input to be decoded is dec_buffer + input_chunk.
|
|
*/
|
|
PyObject *next_input = PyNumber_Add(dec_buffer, input_chunk);
|
|
if (next_input == NULL)
|
|
goto fail;
|
|
assert (PyBytes_Check(next_input));
|
|
Py_DECREF(dec_buffer);
|
|
Py_CLEAR(self->snapshot);
|
|
self->snapshot = Py_BuildValue("NN", dec_flags, next_input);
|
|
}
|
|
Py_DECREF(input_chunk);
|
|
|
|
return (eof == 0);
|
|
|
|
fail:
|
|
Py_XDECREF(dec_buffer);
|
|
Py_XDECREF(dec_flags);
|
|
Py_XDECREF(input_chunk);
|
|
return -1;
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_read(textio *self, PyObject *args)
|
|
{
|
|
Py_ssize_t n = -1;
|
|
PyObject *result = NULL, *chunks = NULL;
|
|
|
|
CHECK_INITIALIZED(self);
|
|
|
|
if (!PyArg_ParseTuple(args, "|O&:read", &_PyIO_ConvertSsize_t, &n))
|
|
return NULL;
|
|
|
|
CHECK_CLOSED(self);
|
|
|
|
if (self->decoder == NULL) {
|
|
PyErr_SetString(PyExc_IOError, "not readable");
|
|
return NULL;
|
|
}
|
|
|
|
if (_textiowrapper_writeflush(self) < 0)
|
|
return NULL;
|
|
|
|
if (n < 0) {
|
|
/* Read everything */
|
|
PyObject *bytes = PyObject_CallMethod(self->buffer, "read", NULL);
|
|
PyObject *decoded, *final;
|
|
if (bytes == NULL)
|
|
goto fail;
|
|
decoded = PyObject_CallMethodObjArgs(self->decoder, _PyIO_str_decode,
|
|
bytes, Py_True, NULL);
|
|
Py_DECREF(bytes);
|
|
if (decoded == NULL)
|
|
goto fail;
|
|
|
|
result = textiowrapper_get_decoded_chars(self, -1);
|
|
|
|
if (result == NULL) {
|
|
Py_DECREF(decoded);
|
|
return NULL;
|
|
}
|
|
|
|
final = PyUnicode_Concat(result, decoded);
|
|
Py_DECREF(result);
|
|
Py_DECREF(decoded);
|
|
if (final == NULL)
|
|
goto fail;
|
|
|
|
Py_CLEAR(self->snapshot);
|
|
return final;
|
|
}
|
|
else {
|
|
int res = 1;
|
|
Py_ssize_t remaining = n;
|
|
|
|
result = textiowrapper_get_decoded_chars(self, n);
|
|
if (result == NULL)
|
|
goto fail;
|
|
remaining -= PyUnicode_GET_SIZE(result);
|
|
|
|
/* Keep reading chunks until we have n characters to return */
|
|
while (remaining > 0) {
|
|
res = textiowrapper_read_chunk(self);
|
|
if (res < 0)
|
|
goto fail;
|
|
if (res == 0) /* EOF */
|
|
break;
|
|
if (chunks == NULL) {
|
|
chunks = PyList_New(0);
|
|
if (chunks == NULL)
|
|
goto fail;
|
|
}
|
|
if (PyList_Append(chunks, result) < 0)
|
|
goto fail;
|
|
Py_DECREF(result);
|
|
result = textiowrapper_get_decoded_chars(self, remaining);
|
|
if (result == NULL)
|
|
goto fail;
|
|
remaining -= PyUnicode_GET_SIZE(result);
|
|
}
|
|
if (chunks != NULL) {
|
|
if (result != NULL && PyList_Append(chunks, result) < 0)
|
|
goto fail;
|
|
Py_CLEAR(result);
|
|
result = PyUnicode_Join(_PyIO_empty_str, chunks);
|
|
if (result == NULL)
|
|
goto fail;
|
|
Py_CLEAR(chunks);
|
|
}
|
|
return result;
|
|
}
|
|
fail:
|
|
Py_XDECREF(result);
|
|
Py_XDECREF(chunks);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* NOTE: `end` must point to the real end of the Py_UNICODE storage,
|
|
that is to the NUL character. Otherwise the function will produce
|
|
incorrect results. */
|
|
static Py_UNICODE *
|
|
find_control_char(Py_UNICODE *start, Py_UNICODE *end, Py_UNICODE ch)
|
|
{
|
|
Py_UNICODE *s = start;
|
|
for (;;) {
|
|
while (*s > ch)
|
|
s++;
|
|
if (*s == ch)
|
|
return s;
|
|
if (s == end)
|
|
return NULL;
|
|
s++;
|
|
}
|
|
}
|
|
|
|
Py_ssize_t
|
|
_PyIO_find_line_ending(
|
|
int translated, int universal, PyObject *readnl,
|
|
Py_UNICODE *start, Py_UNICODE *end, Py_ssize_t *consumed)
|
|
{
|
|
Py_ssize_t len = end - start;
|
|
|
|
if (translated) {
|
|
/* Newlines are already translated, only search for \n */
|
|
Py_UNICODE *pos = find_control_char(start, end, '\n');
|
|
if (pos != NULL)
|
|
return pos - start + 1;
|
|
else {
|
|
*consumed = len;
|
|
return -1;
|
|
}
|
|
}
|
|
else if (universal) {
|
|
/* Universal newline search. Find any of \r, \r\n, \n
|
|
* The decoder ensures that \r\n are not split in two pieces
|
|
*/
|
|
Py_UNICODE *s = start;
|
|
for (;;) {
|
|
Py_UNICODE ch;
|
|
/* Fast path for non-control chars. The loop always ends
|
|
since the Py_UNICODE storage is NUL-terminated. */
|
|
while (*s > '\r')
|
|
s++;
|
|
if (s >= end) {
|
|
*consumed = len;
|
|
return -1;
|
|
}
|
|
ch = *s++;
|
|
if (ch == '\n')
|
|
return s - start;
|
|
if (ch == '\r') {
|
|
if (*s == '\n')
|
|
return s - start + 1;
|
|
else
|
|
return s - start;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
/* Non-universal mode. */
|
|
Py_ssize_t readnl_len = PyString_GET_SIZE(readnl);
|
|
unsigned char *nl = (unsigned char *) PyString_AS_STRING(readnl);
|
|
if (readnl_len == 1) {
|
|
Py_UNICODE *pos = find_control_char(start, end, nl[0]);
|
|
if (pos != NULL)
|
|
return pos - start + 1;
|
|
*consumed = len;
|
|
return -1;
|
|
}
|
|
else {
|
|
Py_UNICODE *s = start;
|
|
Py_UNICODE *e = end - readnl_len + 1;
|
|
Py_UNICODE *pos;
|
|
if (e < s)
|
|
e = s;
|
|
while (s < e) {
|
|
Py_ssize_t i;
|
|
Py_UNICODE *pos = find_control_char(s, end, nl[0]);
|
|
if (pos == NULL || pos >= e)
|
|
break;
|
|
for (i = 1; i < readnl_len; i++) {
|
|
if (pos[i] != nl[i])
|
|
break;
|
|
}
|
|
if (i == readnl_len)
|
|
return pos - start + readnl_len;
|
|
s = pos + 1;
|
|
}
|
|
pos = find_control_char(e, end, nl[0]);
|
|
if (pos == NULL)
|
|
*consumed = len;
|
|
else
|
|
*consumed = pos - start;
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
static PyObject *
|
|
_textiowrapper_readline(textio *self, Py_ssize_t limit)
|
|
{
|
|
PyObject *line = NULL, *chunks = NULL, *remaining = NULL;
|
|
Py_ssize_t start, endpos, chunked, offset_to_buffer;
|
|
int res;
|
|
|
|
CHECK_CLOSED(self);
|
|
|
|
if (_textiowrapper_writeflush(self) < 0)
|
|
return NULL;
|
|
|
|
chunked = 0;
|
|
|
|
while (1) {
|
|
Py_UNICODE *ptr;
|
|
Py_ssize_t line_len;
|
|
Py_ssize_t consumed = 0;
|
|
|
|
/* First, get some data if necessary */
|
|
res = 1;
|
|
while (!self->decoded_chars ||
|
|
!PyUnicode_GET_SIZE(self->decoded_chars)) {
|
|
res = textiowrapper_read_chunk(self);
|
|
if (res < 0)
|
|
goto error;
|
|
if (res == 0)
|
|
break;
|
|
}
|
|
if (res == 0) {
|
|
/* end of file */
|
|
textiowrapper_set_decoded_chars(self, NULL);
|
|
Py_CLEAR(self->snapshot);
|
|
start = endpos = offset_to_buffer = 0;
|
|
break;
|
|
}
|
|
|
|
if (remaining == NULL) {
|
|
line = self->decoded_chars;
|
|
start = self->decoded_chars_used;
|
|
offset_to_buffer = 0;
|
|
Py_INCREF(line);
|
|
}
|
|
else {
|
|
assert(self->decoded_chars_used == 0);
|
|
line = PyUnicode_Concat(remaining, self->decoded_chars);
|
|
start = 0;
|
|
offset_to_buffer = PyUnicode_GET_SIZE(remaining);
|
|
Py_CLEAR(remaining);
|
|
if (line == NULL)
|
|
goto error;
|
|
}
|
|
|
|
ptr = PyUnicode_AS_UNICODE(line);
|
|
line_len = PyUnicode_GET_SIZE(line);
|
|
|
|
endpos = _PyIO_find_line_ending(
|
|
self->readtranslate, self->readuniversal, self->readnl,
|
|
ptr + start, ptr + line_len, &consumed);
|
|
if (endpos >= 0) {
|
|
endpos += start;
|
|
if (limit >= 0 && (endpos - start) + chunked >= limit)
|
|
endpos = start + limit - chunked;
|
|
break;
|
|
}
|
|
|
|
/* We can put aside up to `endpos` */
|
|
endpos = consumed + start;
|
|
if (limit >= 0 && (endpos - start) + chunked >= limit) {
|
|
/* Didn't find line ending, but reached length limit */
|
|
endpos = start + limit - chunked;
|
|
break;
|
|
}
|
|
|
|
if (endpos > start) {
|
|
/* No line ending seen yet - put aside current data */
|
|
PyObject *s;
|
|
if (chunks == NULL) {
|
|
chunks = PyList_New(0);
|
|
if (chunks == NULL)
|
|
goto error;
|
|
}
|
|
s = PyUnicode_FromUnicode(ptr + start, endpos - start);
|
|
if (s == NULL)
|
|
goto error;
|
|
if (PyList_Append(chunks, s) < 0) {
|
|
Py_DECREF(s);
|
|
goto error;
|
|
}
|
|
chunked += PyUnicode_GET_SIZE(s);
|
|
Py_DECREF(s);
|
|
}
|
|
/* There may be some remaining bytes we'll have to prepend to the
|
|
next chunk of data */
|
|
if (endpos < line_len) {
|
|
remaining = PyUnicode_FromUnicode(
|
|
ptr + endpos, line_len - endpos);
|
|
if (remaining == NULL)
|
|
goto error;
|
|
}
|
|
Py_CLEAR(line);
|
|
/* We have consumed the buffer */
|
|
textiowrapper_set_decoded_chars(self, NULL);
|
|
}
|
|
|
|
if (line != NULL) {
|
|
/* Our line ends in the current buffer */
|
|
self->decoded_chars_used = endpos - offset_to_buffer;
|
|
if (start > 0 || endpos < PyUnicode_GET_SIZE(line)) {
|
|
if (start == 0 && Py_REFCNT(line) == 1) {
|
|
if (PyUnicode_Resize(&line, endpos) < 0)
|
|
goto error;
|
|
}
|
|
else {
|
|
PyObject *s = PyUnicode_FromUnicode(
|
|
PyUnicode_AS_UNICODE(line) + start, endpos - start);
|
|
Py_CLEAR(line);
|
|
if (s == NULL)
|
|
goto error;
|
|
line = s;
|
|
}
|
|
}
|
|
}
|
|
if (remaining != NULL) {
|
|
if (chunks == NULL) {
|
|
chunks = PyList_New(0);
|
|
if (chunks == NULL)
|
|
goto error;
|
|
}
|
|
if (PyList_Append(chunks, remaining) < 0)
|
|
goto error;
|
|
Py_CLEAR(remaining);
|
|
}
|
|
if (chunks != NULL) {
|
|
if (line != NULL && PyList_Append(chunks, line) < 0)
|
|
goto error;
|
|
Py_CLEAR(line);
|
|
line = PyUnicode_Join(_PyIO_empty_str, chunks);
|
|
if (line == NULL)
|
|
goto error;
|
|
Py_DECREF(chunks);
|
|
}
|
|
if (line == NULL)
|
|
line = PyUnicode_FromStringAndSize(NULL, 0);
|
|
|
|
return line;
|
|
|
|
error:
|
|
Py_XDECREF(chunks);
|
|
Py_XDECREF(remaining);
|
|
Py_XDECREF(line);
|
|
return NULL;
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_readline(textio *self, PyObject *args)
|
|
{
|
|
PyObject *limitobj = NULL;
|
|
Py_ssize_t limit = -1;
|
|
|
|
CHECK_INITIALIZED(self);
|
|
if (!PyArg_ParseTuple(args, "|O:readline", &limitobj)) {
|
|
return NULL;
|
|
}
|
|
if (limitobj) {
|
|
if (!PyNumber_Check(limitobj)) {
|
|
PyErr_Format(PyExc_TypeError,
|
|
"integer argument expected, got '%.200s'",
|
|
Py_TYPE(limitobj)->tp_name);
|
|
return NULL;
|
|
}
|
|
limit = PyNumber_AsSsize_t(limitobj, PyExc_OverflowError);
|
|
if (limit == -1 && PyErr_Occurred())
|
|
return NULL;
|
|
}
|
|
return _textiowrapper_readline(self, limit);
|
|
}
|
|
|
|
/* Seek and Tell */
|
|
|
|
typedef struct {
|
|
Py_off_t start_pos;
|
|
int dec_flags;
|
|
int bytes_to_feed;
|
|
int chars_to_skip;
|
|
char need_eof;
|
|
} cookie_type;
|
|
|
|
/*
|
|
To speed up cookie packing/unpacking, we store the fields in a temporary
|
|
string and call _PyLong_FromByteArray() or _PyLong_AsByteArray (resp.).
|
|
The following macros define at which offsets in the intermediary byte
|
|
string the various CookieStruct fields will be stored.
|
|
*/
|
|
|
|
#define COOKIE_BUF_LEN (sizeof(Py_off_t) + 3 * sizeof(int) + sizeof(char))
|
|
|
|
#if defined(WORDS_BIGENDIAN)
|
|
|
|
# define IS_LITTLE_ENDIAN 0
|
|
|
|
/* We want the least significant byte of start_pos to also be the least
|
|
significant byte of the cookie, which means that in big-endian mode we
|
|
must copy the fields in reverse order. */
|
|
|
|
# define OFF_START_POS (sizeof(char) + 3 * sizeof(int))
|
|
# define OFF_DEC_FLAGS (sizeof(char) + 2 * sizeof(int))
|
|
# define OFF_BYTES_TO_FEED (sizeof(char) + sizeof(int))
|
|
# define OFF_CHARS_TO_SKIP (sizeof(char))
|
|
# define OFF_NEED_EOF 0
|
|
|
|
#else
|
|
|
|
# define IS_LITTLE_ENDIAN 1
|
|
|
|
/* Little-endian mode: the least significant byte of start_pos will
|
|
naturally end up the least significant byte of the cookie. */
|
|
|
|
# define OFF_START_POS 0
|
|
# define OFF_DEC_FLAGS (sizeof(Py_off_t))
|
|
# define OFF_BYTES_TO_FEED (sizeof(Py_off_t) + sizeof(int))
|
|
# define OFF_CHARS_TO_SKIP (sizeof(Py_off_t) + 2 * sizeof(int))
|
|
# define OFF_NEED_EOF (sizeof(Py_off_t) + 3 * sizeof(int))
|
|
|
|
#endif
|
|
|
|
static int
|
|
textiowrapper_parse_cookie(cookie_type *cookie, PyObject *cookieObj)
|
|
{
|
|
unsigned char buffer[COOKIE_BUF_LEN];
|
|
PyLongObject *cookieLong = (PyLongObject *)PyNumber_Long(cookieObj);
|
|
if (cookieLong == NULL)
|
|
return -1;
|
|
|
|
if (_PyLong_AsByteArray(cookieLong, buffer, sizeof(buffer),
|
|
IS_LITTLE_ENDIAN, 0) < 0) {
|
|
Py_DECREF(cookieLong);
|
|
return -1;
|
|
}
|
|
Py_DECREF(cookieLong);
|
|
|
|
memcpy(&cookie->start_pos, buffer + OFF_START_POS, sizeof(cookie->start_pos));
|
|
memcpy(&cookie->dec_flags, buffer + OFF_DEC_FLAGS, sizeof(cookie->dec_flags));
|
|
memcpy(&cookie->bytes_to_feed, buffer + OFF_BYTES_TO_FEED, sizeof(cookie->bytes_to_feed));
|
|
memcpy(&cookie->chars_to_skip, buffer + OFF_CHARS_TO_SKIP, sizeof(cookie->chars_to_skip));
|
|
memcpy(&cookie->need_eof, buffer + OFF_NEED_EOF, sizeof(cookie->need_eof));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_build_cookie(cookie_type *cookie)
|
|
{
|
|
unsigned char buffer[COOKIE_BUF_LEN];
|
|
|
|
memcpy(buffer + OFF_START_POS, &cookie->start_pos, sizeof(cookie->start_pos));
|
|
memcpy(buffer + OFF_DEC_FLAGS, &cookie->dec_flags, sizeof(cookie->dec_flags));
|
|
memcpy(buffer + OFF_BYTES_TO_FEED, &cookie->bytes_to_feed, sizeof(cookie->bytes_to_feed));
|
|
memcpy(buffer + OFF_CHARS_TO_SKIP, &cookie->chars_to_skip, sizeof(cookie->chars_to_skip));
|
|
memcpy(buffer + OFF_NEED_EOF, &cookie->need_eof, sizeof(cookie->need_eof));
|
|
|
|
return _PyLong_FromByteArray(buffer, sizeof(buffer), IS_LITTLE_ENDIAN, 0);
|
|
}
|
|
#undef IS_LITTLE_ENDIAN
|
|
|
|
static int
|
|
_textiowrapper_decoder_setstate(textio *self, cookie_type *cookie)
|
|
{
|
|
PyObject *res;
|
|
/* When seeking to the start of the stream, we call decoder.reset()
|
|
rather than decoder.getstate().
|
|
This is for a few decoders such as utf-16 for which the state value
|
|
at start is not (b"", 0) but e.g. (b"", 2) (meaning, in the case of
|
|
utf-16, that we are expecting a BOM).
|
|
*/
|
|
if (cookie->start_pos == 0 && cookie->dec_flags == 0)
|
|
res = PyObject_CallMethodObjArgs(self->decoder, _PyIO_str_reset, NULL);
|
|
else
|
|
res = PyObject_CallMethod(self->decoder, "setstate",
|
|
"((si))", "", cookie->dec_flags);
|
|
if (res == NULL)
|
|
return -1;
|
|
Py_DECREF(res);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
_textiowrapper_encoder_setstate(textio *self, cookie_type *cookie)
|
|
{
|
|
PyObject *res;
|
|
/* Same as _textiowrapper_decoder_setstate() above. */
|
|
if (cookie->start_pos == 0 && cookie->dec_flags == 0) {
|
|
res = PyObject_CallMethodObjArgs(self->encoder, _PyIO_str_reset, NULL);
|
|
self->encoding_start_of_stream = 1;
|
|
}
|
|
else {
|
|
res = PyObject_CallMethodObjArgs(self->encoder, _PyIO_str_setstate,
|
|
_PyIO_zero, NULL);
|
|
self->encoding_start_of_stream = 0;
|
|
}
|
|
if (res == NULL)
|
|
return -1;
|
|
Py_DECREF(res);
|
|
return 0;
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_seek(textio *self, PyObject *args)
|
|
{
|
|
PyObject *cookieObj, *posobj;
|
|
cookie_type cookie;
|
|
int whence = 0;
|
|
PyObject *res;
|
|
int cmp;
|
|
|
|
CHECK_INITIALIZED(self);
|
|
|
|
if (!PyArg_ParseTuple(args, "O|i:seek", &cookieObj, &whence))
|
|
return NULL;
|
|
CHECK_CLOSED(self);
|
|
|
|
Py_INCREF(cookieObj);
|
|
|
|
if (!self->seekable) {
|
|
PyErr_SetString(PyExc_IOError,
|
|
"underlying stream is not seekable");
|
|
goto fail;
|
|
}
|
|
|
|
if (whence == 1) {
|
|
/* seek relative to current position */
|
|
cmp = PyObject_RichCompareBool(cookieObj, _PyIO_zero, Py_EQ);
|
|
if (cmp < 0)
|
|
goto fail;
|
|
|
|
if (cmp == 0) {
|
|
PyErr_SetString(PyExc_IOError,
|
|
"can't do nonzero cur-relative seeks");
|
|
goto fail;
|
|
}
|
|
|
|
/* Seeking to the current position should attempt to
|
|
* sync the underlying buffer with the current position.
|
|
*/
|
|
Py_DECREF(cookieObj);
|
|
cookieObj = PyObject_CallMethod((PyObject *)self, "tell", NULL);
|
|
if (cookieObj == NULL)
|
|
goto fail;
|
|
}
|
|
else if (whence == 2) {
|
|
/* seek relative to end of file */
|
|
|
|
cmp = PyObject_RichCompareBool(cookieObj, _PyIO_zero, Py_EQ);
|
|
if (cmp < 0)
|
|
goto fail;
|
|
|
|
if (cmp == 0) {
|
|
PyErr_SetString(PyExc_IOError,
|
|
"can't do nonzero end-relative seeks");
|
|
goto fail;
|
|
}
|
|
|
|
res = PyObject_CallMethod((PyObject *)self, "flush", NULL);
|
|
if (res == NULL)
|
|
goto fail;
|
|
Py_DECREF(res);
|
|
|
|
textiowrapper_set_decoded_chars(self, NULL);
|
|
Py_CLEAR(self->snapshot);
|
|
if (self->decoder) {
|
|
res = PyObject_CallMethod(self->decoder, "reset", NULL);
|
|
if (res == NULL)
|
|
goto fail;
|
|
Py_DECREF(res);
|
|
}
|
|
|
|
res = PyObject_CallMethod(self->buffer, "seek", "ii", 0, 2);
|
|
Py_XDECREF(cookieObj);
|
|
return res;
|
|
}
|
|
else if (whence != 0) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"invalid whence (%d, should be 0, 1 or 2)", whence);
|
|
goto fail;
|
|
}
|
|
|
|
cmp = PyObject_RichCompareBool(cookieObj, _PyIO_zero, Py_LT);
|
|
if (cmp < 0)
|
|
goto fail;
|
|
|
|
if (cmp == 1) {
|
|
PyObject *repr = PyObject_Repr(cookieObj);
|
|
if (repr != NULL) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"negative seek position %s",
|
|
PyString_AS_STRING(repr));
|
|
Py_DECREF(repr);
|
|
}
|
|
goto fail;
|
|
}
|
|
|
|
res = PyObject_CallMethodObjArgs((PyObject *)self, _PyIO_str_flush, NULL);
|
|
if (res == NULL)
|
|
goto fail;
|
|
Py_DECREF(res);
|
|
|
|
/* The strategy of seek() is to go back to the safe start point
|
|
* and replay the effect of read(chars_to_skip) from there.
|
|
*/
|
|
if (textiowrapper_parse_cookie(&cookie, cookieObj) < 0)
|
|
goto fail;
|
|
|
|
/* Seek back to the safe start point. */
|
|
posobj = PyLong_FromOff_t(cookie.start_pos);
|
|
if (posobj == NULL)
|
|
goto fail;
|
|
res = PyObject_CallMethodObjArgs(self->buffer,
|
|
_PyIO_str_seek, posobj, NULL);
|
|
Py_DECREF(posobj);
|
|
if (res == NULL)
|
|
goto fail;
|
|
Py_DECREF(res);
|
|
|
|
textiowrapper_set_decoded_chars(self, NULL);
|
|
Py_CLEAR(self->snapshot);
|
|
|
|
/* Restore the decoder to its state from the safe start point. */
|
|
if (self->decoder) {
|
|
if (_textiowrapper_decoder_setstate(self, &cookie) < 0)
|
|
goto fail;
|
|
}
|
|
|
|
if (cookie.chars_to_skip) {
|
|
/* Just like _read_chunk, feed the decoder and save a snapshot. */
|
|
PyObject *input_chunk = PyObject_CallMethod(
|
|
self->buffer, "read", "i", cookie.bytes_to_feed);
|
|
PyObject *decoded;
|
|
|
|
if (input_chunk == NULL)
|
|
goto fail;
|
|
|
|
assert (PyBytes_Check(input_chunk));
|
|
|
|
self->snapshot = Py_BuildValue("iN", cookie.dec_flags, input_chunk);
|
|
if (self->snapshot == NULL) {
|
|
Py_DECREF(input_chunk);
|
|
goto fail;
|
|
}
|
|
|
|
decoded = PyObject_CallMethod(self->decoder, "decode",
|
|
"Oi", input_chunk, (int)cookie.need_eof);
|
|
|
|
if (decoded == NULL)
|
|
goto fail;
|
|
|
|
textiowrapper_set_decoded_chars(self, decoded);
|
|
|
|
/* Skip chars_to_skip of the decoded characters. */
|
|
if (PyUnicode_GetSize(self->decoded_chars) < cookie.chars_to_skip) {
|
|
PyErr_SetString(PyExc_IOError, "can't restore logical file position");
|
|
goto fail;
|
|
}
|
|
self->decoded_chars_used = cookie.chars_to_skip;
|
|
}
|
|
else {
|
|
self->snapshot = Py_BuildValue("is", cookie.dec_flags, "");
|
|
if (self->snapshot == NULL)
|
|
goto fail;
|
|
}
|
|
|
|
/* Finally, reset the encoder (merely useful for proper BOM handling) */
|
|
if (self->encoder) {
|
|
if (_textiowrapper_encoder_setstate(self, &cookie) < 0)
|
|
goto fail;
|
|
}
|
|
return cookieObj;
|
|
fail:
|
|
Py_XDECREF(cookieObj);
|
|
return NULL;
|
|
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_tell(textio *self, PyObject *args)
|
|
{
|
|
PyObject *res;
|
|
PyObject *posobj = NULL;
|
|
cookie_type cookie = {0,0,0,0,0};
|
|
PyObject *next_input;
|
|
Py_ssize_t chars_to_skip, chars_decoded;
|
|
PyObject *saved_state = NULL;
|
|
char *input, *input_end;
|
|
|
|
CHECK_INITIALIZED(self);
|
|
CHECK_CLOSED(self);
|
|
|
|
if (!self->seekable) {
|
|
PyErr_SetString(PyExc_IOError,
|
|
"underlying stream is not seekable");
|
|
goto fail;
|
|
}
|
|
if (!self->telling) {
|
|
PyErr_SetString(PyExc_IOError,
|
|
"telling position disabled by next() call");
|
|
goto fail;
|
|
}
|
|
|
|
if (_textiowrapper_writeflush(self) < 0)
|
|
return NULL;
|
|
res = PyObject_CallMethod((PyObject *)self, "flush", NULL);
|
|
if (res == NULL)
|
|
goto fail;
|
|
Py_DECREF(res);
|
|
|
|
posobj = PyObject_CallMethod(self->buffer, "tell", NULL);
|
|
if (posobj == NULL)
|
|
goto fail;
|
|
|
|
if (self->decoder == NULL || self->snapshot == NULL) {
|
|
assert (self->decoded_chars == NULL || PyUnicode_GetSize(self->decoded_chars) == 0);
|
|
return posobj;
|
|
}
|
|
|
|
#if defined(HAVE_LARGEFILE_SUPPORT)
|
|
cookie.start_pos = PyLong_AsLongLong(posobj);
|
|
#else
|
|
cookie.start_pos = PyLong_AsLong(posobj);
|
|
#endif
|
|
if (PyErr_Occurred())
|
|
goto fail;
|
|
|
|
/* Skip backward to the snapshot point (see _read_chunk). */
|
|
if (!PyArg_Parse(self->snapshot, "(iO)", &cookie.dec_flags, &next_input))
|
|
goto fail;
|
|
|
|
assert (PyBytes_Check(next_input));
|
|
|
|
cookie.start_pos -= PyBytes_GET_SIZE(next_input);
|
|
|
|
/* How many decoded characters have been used up since the snapshot? */
|
|
if (self->decoded_chars_used == 0) {
|
|
/* We haven't moved from the snapshot point. */
|
|
Py_DECREF(posobj);
|
|
return textiowrapper_build_cookie(&cookie);
|
|
}
|
|
|
|
chars_to_skip = self->decoded_chars_used;
|
|
|
|
/* Starting from the snapshot position, we will walk the decoder
|
|
* forward until it gives us enough decoded characters.
|
|
*/
|
|
saved_state = PyObject_CallMethodObjArgs(self->decoder,
|
|
_PyIO_str_getstate, NULL);
|
|
if (saved_state == NULL)
|
|
goto fail;
|
|
|
|
/* Note our initial start point. */
|
|
if (_textiowrapper_decoder_setstate(self, &cookie) < 0)
|
|
goto fail;
|
|
|
|
/* Feed the decoder one byte at a time. As we go, note the
|
|
* nearest "safe start point" before the current location
|
|
* (a point where the decoder has nothing buffered, so seek()
|
|
* can safely start from there and advance to this location).
|
|
*/
|
|
chars_decoded = 0;
|
|
input = PyBytes_AS_STRING(next_input);
|
|
input_end = input + PyBytes_GET_SIZE(next_input);
|
|
while (input < input_end) {
|
|
PyObject *state;
|
|
char *dec_buffer;
|
|
Py_ssize_t dec_buffer_len;
|
|
int dec_flags;
|
|
|
|
PyObject *decoded = PyObject_CallMethod(
|
|
self->decoder, "decode", "s#", input, 1);
|
|
if (decoded == NULL)
|
|
goto fail;
|
|
assert (PyUnicode_Check(decoded));
|
|
chars_decoded += PyUnicode_GET_SIZE(decoded);
|
|
Py_DECREF(decoded);
|
|
|
|
cookie.bytes_to_feed += 1;
|
|
|
|
state = PyObject_CallMethodObjArgs(self->decoder,
|
|
_PyIO_str_getstate, NULL);
|
|
if (state == NULL)
|
|
goto fail;
|
|
if (!PyArg_Parse(state, "(s#i)", &dec_buffer, &dec_buffer_len, &dec_flags)) {
|
|
Py_DECREF(state);
|
|
goto fail;
|
|
}
|
|
Py_DECREF(state);
|
|
|
|
if (dec_buffer_len == 0 && chars_decoded <= chars_to_skip) {
|
|
/* Decoder buffer is empty, so this is a safe start point. */
|
|
cookie.start_pos += cookie.bytes_to_feed;
|
|
chars_to_skip -= chars_decoded;
|
|
cookie.dec_flags = dec_flags;
|
|
cookie.bytes_to_feed = 0;
|
|
chars_decoded = 0;
|
|
}
|
|
if (chars_decoded >= chars_to_skip)
|
|
break;
|
|
input++;
|
|
}
|
|
if (input == input_end) {
|
|
/* We didn't get enough decoded data; signal EOF to get more. */
|
|
PyObject *decoded = PyObject_CallMethod(
|
|
self->decoder, "decode", "si", "", /* final = */ 1);
|
|
if (decoded == NULL)
|
|
goto fail;
|
|
assert (PyUnicode_Check(decoded));
|
|
chars_decoded += PyUnicode_GET_SIZE(decoded);
|
|
Py_DECREF(decoded);
|
|
cookie.need_eof = 1;
|
|
|
|
if (chars_decoded < chars_to_skip) {
|
|
PyErr_SetString(PyExc_IOError,
|
|
"can't reconstruct logical file position");
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
/* finally */
|
|
Py_XDECREF(posobj);
|
|
res = PyObject_CallMethod(self->decoder, "setstate", "(O)", saved_state);
|
|
Py_DECREF(saved_state);
|
|
if (res == NULL)
|
|
return NULL;
|
|
Py_DECREF(res);
|
|
|
|
/* The returned cookie corresponds to the last safe start point. */
|
|
cookie.chars_to_skip = Py_SAFE_DOWNCAST(chars_to_skip, Py_ssize_t, int);
|
|
return textiowrapper_build_cookie(&cookie);
|
|
|
|
fail:
|
|
Py_XDECREF(posobj);
|
|
if (saved_state) {
|
|
PyObject *type, *value, *traceback;
|
|
PyErr_Fetch(&type, &value, &traceback);
|
|
|
|
res = PyObject_CallMethod(self->decoder, "setstate", "(O)", saved_state);
|
|
Py_DECREF(saved_state);
|
|
if (res == NULL)
|
|
return NULL;
|
|
Py_DECREF(res);
|
|
|
|
PyErr_Restore(type, value, traceback);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_truncate(textio *self, PyObject *args)
|
|
{
|
|
PyObject *pos = Py_None;
|
|
PyObject *res;
|
|
|
|
CHECK_INITIALIZED(self)
|
|
if (!PyArg_ParseTuple(args, "|O:truncate", &pos)) {
|
|
return NULL;
|
|
}
|
|
|
|
res = PyObject_CallMethodObjArgs((PyObject *) self, _PyIO_str_flush, NULL);
|
|
if (res == NULL)
|
|
return NULL;
|
|
Py_DECREF(res);
|
|
|
|
return PyObject_CallMethodObjArgs(self->buffer, _PyIO_str_truncate, pos, NULL);
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_repr(textio *self)
|
|
{
|
|
PyObject *nameobj, *res;
|
|
PyObject *namerepr = NULL, *encrepr = NULL;
|
|
|
|
CHECK_INITIALIZED(self);
|
|
|
|
nameobj = PyObject_GetAttrString((PyObject *) self, "name");
|
|
if (nameobj == NULL) {
|
|
if (PyErr_ExceptionMatches(PyExc_AttributeError))
|
|
PyErr_Clear();
|
|
else
|
|
goto error;
|
|
encrepr = PyObject_Repr(self->encoding);
|
|
res = PyString_FromFormat("<_io.TextIOWrapper encoding=%s>",
|
|
PyString_AS_STRING(encrepr));
|
|
}
|
|
else {
|
|
encrepr = PyObject_Repr(self->encoding);
|
|
namerepr = PyObject_Repr(nameobj);
|
|
res = PyString_FromFormat("<_io.TextIOWrapper name=%s encoding=%s>",
|
|
PyString_AS_STRING(namerepr),
|
|
PyString_AS_STRING(encrepr));
|
|
Py_DECREF(nameobj);
|
|
}
|
|
Py_XDECREF(namerepr);
|
|
Py_XDECREF(encrepr);
|
|
return res;
|
|
|
|
error:
|
|
Py_XDECREF(namerepr);
|
|
Py_XDECREF(encrepr);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* Inquiries */
|
|
|
|
static PyObject *
|
|
textiowrapper_fileno(textio *self, PyObject *args)
|
|
{
|
|
CHECK_INITIALIZED(self);
|
|
return PyObject_CallMethod(self->buffer, "fileno", NULL);
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_seekable(textio *self, PyObject *args)
|
|
{
|
|
CHECK_INITIALIZED(self);
|
|
return PyObject_CallMethod(self->buffer, "seekable", NULL);
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_readable(textio *self, PyObject *args)
|
|
{
|
|
CHECK_INITIALIZED(self);
|
|
return PyObject_CallMethod(self->buffer, "readable", NULL);
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_writable(textio *self, PyObject *args)
|
|
{
|
|
CHECK_INITIALIZED(self);
|
|
return PyObject_CallMethod(self->buffer, "writable", NULL);
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_isatty(textio *self, PyObject *args)
|
|
{
|
|
CHECK_INITIALIZED(self);
|
|
return PyObject_CallMethod(self->buffer, "isatty", NULL);
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_flush(textio *self, PyObject *args)
|
|
{
|
|
CHECK_INITIALIZED(self);
|
|
CHECK_CLOSED(self);
|
|
self->telling = self->seekable;
|
|
if (_textiowrapper_writeflush(self) < 0)
|
|
return NULL;
|
|
return PyObject_CallMethod(self->buffer, "flush", NULL);
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_close(textio *self, PyObject *args)
|
|
{
|
|
PyObject *res;
|
|
int r;
|
|
CHECK_INITIALIZED(self);
|
|
|
|
res = textiowrapper_closed_get(self, NULL);
|
|
if (res == NULL)
|
|
return NULL;
|
|
r = PyObject_IsTrue(res);
|
|
Py_DECREF(res);
|
|
if (r < 0)
|
|
return NULL;
|
|
|
|
if (r > 0) {
|
|
Py_RETURN_NONE; /* stream already closed */
|
|
}
|
|
else {
|
|
res = PyObject_CallMethod((PyObject *)self, "flush", NULL);
|
|
if (res == NULL) {
|
|
return NULL;
|
|
}
|
|
else
|
|
Py_DECREF(res);
|
|
|
|
return PyObject_CallMethod(self->buffer, "close", NULL);
|
|
}
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_iternext(textio *self)
|
|
{
|
|
PyObject *line;
|
|
|
|
CHECK_INITIALIZED(self);
|
|
|
|
self->telling = 0;
|
|
if (Py_TYPE(self) == &PyTextIOWrapper_Type) {
|
|
/* Skip method call overhead for speed */
|
|
line = _textiowrapper_readline(self, -1);
|
|
}
|
|
else {
|
|
line = PyObject_CallMethodObjArgs((PyObject *)self,
|
|
_PyIO_str_readline, NULL);
|
|
if (line && !PyUnicode_Check(line)) {
|
|
PyErr_Format(PyExc_IOError,
|
|
"readline() should have returned an str object, "
|
|
"not '%.200s'", Py_TYPE(line)->tp_name);
|
|
Py_DECREF(line);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
if (line == NULL)
|
|
return NULL;
|
|
|
|
if (PyUnicode_GET_SIZE(line) == 0) {
|
|
/* Reached EOF or would have blocked */
|
|
Py_DECREF(line);
|
|
Py_CLEAR(self->snapshot);
|
|
self->telling = self->seekable;
|
|
return NULL;
|
|
}
|
|
|
|
return line;
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_name_get(textio *self, void *context)
|
|
{
|
|
CHECK_INITIALIZED(self);
|
|
return PyObject_GetAttrString(self->buffer, "name");
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_closed_get(textio *self, void *context)
|
|
{
|
|
CHECK_INITIALIZED(self);
|
|
return PyObject_GetAttr(self->buffer, _PyIO_str_closed);
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_newlines_get(textio *self, void *context)
|
|
{
|
|
PyObject *res;
|
|
CHECK_INITIALIZED(self);
|
|
if (self->decoder == NULL)
|
|
Py_RETURN_NONE;
|
|
res = PyObject_GetAttr(self->decoder, _PyIO_str_newlines);
|
|
if (res == NULL) {
|
|
if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
|
|
PyErr_Clear();
|
|
Py_RETURN_NONE;
|
|
}
|
|
else {
|
|
return NULL;
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_errors_get(textio *self, void *context)
|
|
{
|
|
CHECK_INITIALIZED(self);
|
|
Py_INCREF(self->errors);
|
|
return self->errors;
|
|
}
|
|
|
|
static PyObject *
|
|
textiowrapper_chunk_size_get(textio *self, void *context)
|
|
{
|
|
CHECK_INITIALIZED(self);
|
|
return PyLong_FromSsize_t(self->chunk_size);
|
|
}
|
|
|
|
static int
|
|
textiowrapper_chunk_size_set(textio *self, PyObject *arg, void *context)
|
|
{
|
|
Py_ssize_t n;
|
|
CHECK_INITIALIZED_INT(self);
|
|
n = PyNumber_AsSsize_t(arg, PyExc_TypeError);
|
|
if (n == -1 && PyErr_Occurred())
|
|
return -1;
|
|
if (n <= 0) {
|
|
PyErr_SetString(PyExc_ValueError,
|
|
"a strictly positive integer is required");
|
|
return -1;
|
|
}
|
|
self->chunk_size = n;
|
|
return 0;
|
|
}
|
|
|
|
static PyMethodDef textiowrapper_methods[] = {
|
|
{"detach", (PyCFunction)textiowrapper_detach, METH_NOARGS},
|
|
{"write", (PyCFunction)textiowrapper_write, METH_VARARGS},
|
|
{"read", (PyCFunction)textiowrapper_read, METH_VARARGS},
|
|
{"readline", (PyCFunction)textiowrapper_readline, METH_VARARGS},
|
|
{"flush", (PyCFunction)textiowrapper_flush, METH_NOARGS},
|
|
{"close", (PyCFunction)textiowrapper_close, METH_NOARGS},
|
|
|
|
{"fileno", (PyCFunction)textiowrapper_fileno, METH_NOARGS},
|
|
{"seekable", (PyCFunction)textiowrapper_seekable, METH_NOARGS},
|
|
{"readable", (PyCFunction)textiowrapper_readable, METH_NOARGS},
|
|
{"writable", (PyCFunction)textiowrapper_writable, METH_NOARGS},
|
|
{"isatty", (PyCFunction)textiowrapper_isatty, METH_NOARGS},
|
|
|
|
{"seek", (PyCFunction)textiowrapper_seek, METH_VARARGS},
|
|
{"tell", (PyCFunction)textiowrapper_tell, METH_NOARGS},
|
|
{"truncate", (PyCFunction)textiowrapper_truncate, METH_VARARGS},
|
|
{NULL, NULL}
|
|
};
|
|
|
|
static PyMemberDef textiowrapper_members[] = {
|
|
{"encoding", T_OBJECT, offsetof(textio, encoding), READONLY},
|
|
{"buffer", T_OBJECT, offsetof(textio, buffer), READONLY},
|
|
{"line_buffering", T_BOOL, offsetof(textio, line_buffering), READONLY},
|
|
{NULL}
|
|
};
|
|
|
|
static PyGetSetDef textiowrapper_getset[] = {
|
|
{"name", (getter)textiowrapper_name_get, NULL, NULL},
|
|
{"closed", (getter)textiowrapper_closed_get, NULL, NULL},
|
|
/* {"mode", (getter)TextIOWrapper_mode_get, NULL, NULL},
|
|
*/
|
|
{"newlines", (getter)textiowrapper_newlines_get, NULL, NULL},
|
|
{"errors", (getter)textiowrapper_errors_get, NULL, NULL},
|
|
{"_CHUNK_SIZE", (getter)textiowrapper_chunk_size_get,
|
|
(setter)textiowrapper_chunk_size_set, NULL},
|
|
{NULL}
|
|
};
|
|
|
|
PyTypeObject PyTextIOWrapper_Type = {
|
|
PyVarObject_HEAD_INIT(NULL, 0)
|
|
"_io.TextIOWrapper", /*tp_name*/
|
|
sizeof(textio), /*tp_basicsize*/
|
|
0, /*tp_itemsize*/
|
|
(destructor)textiowrapper_dealloc, /*tp_dealloc*/
|
|
0, /*tp_print*/
|
|
0, /*tp_getattr*/
|
|
0, /*tps_etattr*/
|
|
0, /*tp_compare */
|
|
(reprfunc)textiowrapper_repr,/*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 | Py_TPFLAGS_BASETYPE
|
|
| Py_TPFLAGS_HAVE_GC, /*tp_flags*/
|
|
textiowrapper_doc, /* tp_doc */
|
|
(traverseproc)textiowrapper_traverse, /* tp_traverse */
|
|
(inquiry)textiowrapper_clear, /* tp_clear */
|
|
0, /* tp_richcompare */
|
|
offsetof(textio, weakreflist), /*tp_weaklistoffset*/
|
|
0, /* tp_iter */
|
|
(iternextfunc)textiowrapper_iternext, /* tp_iternext */
|
|
textiowrapper_methods, /* tp_methods */
|
|
textiowrapper_members, /* tp_members */
|
|
textiowrapper_getset, /* tp_getset */
|
|
0, /* tp_base */
|
|
0, /* tp_dict */
|
|
0, /* tp_descr_get */
|
|
0, /* tp_descr_set */
|
|
offsetof(textio, dict), /*tp_dictoffset*/
|
|
(initproc)textiowrapper_init, /* tp_init */
|
|
0, /* tp_alloc */
|
|
PyType_GenericNew, /* tp_new */
|
|
};
|