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/*[clinic input]
preserve
[clinic start generated code]*/
#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
# include "pycore_gc.h" // PyGC_Head
# include "pycore_runtime.h" // _Py_ID()
#endif
#include "pycore_abstract.h" // _PyNumber_Index()
#include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
#include "pycore_modsupport.h" // _PyArg_UnpackKeywords()
PyDoc_STRVAR(_zstd_ZstdDecompressor___init____doc__,
"ZstdDecompressor(zstd_dict=None, options=None)\n"
"--\n"
"\n"
"Create a decompressor object for decompressing data incrementally.\n"
"\n"
" zstd_dict\n"
" A ZstdDict object, a pre-trained zstd dictionary.\n"
" options\n"
" A dict object that contains advanced decompression parameters.\n"
"\n"
"Thread-safe at method level. For one-shot decompression, use the decompress()\n"
"function instead.");
static int
_zstd_ZstdDecompressor___init___impl(ZstdDecompressor *self,
PyObject *zstd_dict, PyObject *options);
static int
_zstd_ZstdDecompressor___init__(PyObject *self, PyObject *args, PyObject *kwargs)
{
int return_value = -1;
#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
#define NUM_KEYWORDS 2
static struct {
PyGC_Head _this_is_not_used;
PyObject_VAR_HEAD
Py_hash_t ob_hash;
PyObject *ob_item[NUM_KEYWORDS];
} _kwtuple = {
.ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
.ob_hash = -1,
.ob_item = { &_Py_ID(zstd_dict), &_Py_ID(options), },
};
#undef NUM_KEYWORDS
#define KWTUPLE (&_kwtuple.ob_base.ob_base)
#else // !Py_BUILD_CORE
# define KWTUPLE NULL
#endif // !Py_BUILD_CORE
static const char * const _keywords[] = {"zstd_dict", "options", NULL};
static _PyArg_Parser _parser = {
.keywords = _keywords,
.fname = "ZstdDecompressor",
.kwtuple = KWTUPLE,
};
#undef KWTUPLE
PyObject *argsbuf[2];
PyObject * const *fastargs;
Py_ssize_t nargs = PyTuple_GET_SIZE(args);
Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
PyObject *zstd_dict = Py_None;
PyObject *options = Py_None;
fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
/*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
if (!fastargs) {
goto exit;
}
if (!noptargs) {
goto skip_optional_pos;
}
if (fastargs[0]) {
zstd_dict = fastargs[0];
if (!--noptargs) {
goto skip_optional_pos;
}
}
options = fastargs[1];
skip_optional_pos:
return_value = _zstd_ZstdDecompressor___init___impl((ZstdDecompressor *)self, zstd_dict, options);
exit:
return return_value;
}
PyDoc_STRVAR(_zstd_ZstdDecompressor_unused_data__doc__,
"A bytes object of un-consumed input data.\n"
"\n"
"When ZstdDecompressor object stops after a frame is\n"
"decompressed, unused input data after the frame. Otherwise this will be b\'\'.");
#if defined(_zstd_ZstdDecompressor_unused_data_DOCSTR)
# undef _zstd_ZstdDecompressor_unused_data_DOCSTR
#endif
#define _zstd_ZstdDecompressor_unused_data_DOCSTR _zstd_ZstdDecompressor_unused_data__doc__
#if !defined(_zstd_ZstdDecompressor_unused_data_DOCSTR)
# define _zstd_ZstdDecompressor_unused_data_DOCSTR NULL
#endif
#if defined(_ZSTD_ZSTDDECOMPRESSOR_UNUSED_DATA_GETSETDEF)
# undef _ZSTD_ZSTDDECOMPRESSOR_UNUSED_DATA_GETSETDEF
# define _ZSTD_ZSTDDECOMPRESSOR_UNUSED_DATA_GETSETDEF {"unused_data", (getter)_zstd_ZstdDecompressor_unused_data_get, (setter)_zstd_ZstdDecompressor_unused_data_set, _zstd_ZstdDecompressor_unused_data_DOCSTR},
#else
# define _ZSTD_ZSTDDECOMPRESSOR_UNUSED_DATA_GETSETDEF {"unused_data", (getter)_zstd_ZstdDecompressor_unused_data_get, NULL, _zstd_ZstdDecompressor_unused_data_DOCSTR},
#endif
static PyObject *
_zstd_ZstdDecompressor_unused_data_get_impl(ZstdDecompressor *self);
static PyObject *
_zstd_ZstdDecompressor_unused_data_get(PyObject *self, void *Py_UNUSED(context))
{
PyObject *return_value = NULL;
Py_BEGIN_CRITICAL_SECTION(self);
return_value = _zstd_ZstdDecompressor_unused_data_get_impl((ZstdDecompressor *)self);
Py_END_CRITICAL_SECTION();
return return_value;
}
PyDoc_STRVAR(_zstd_ZstdDecompressor_decompress__doc__,
"decompress($self, /, data, max_length=-1)\n"
"--\n"
"\n"
"Decompress *data*, returning uncompressed bytes if possible, or b\'\' otherwise.\n"
"\n"
" data\n"
" A bytes-like object, zstd data to be decompressed.\n"
" max_length\n"
" Maximum size of returned data. When it is negative, the size of\n"
" output buffer is unlimited. When it is nonnegative, returns at\n"
" most max_length bytes of decompressed data.\n"
"\n"
"If *max_length* is nonnegative, returns at most *max_length* bytes of\n"
"decompressed data. If this limit is reached and further output can be\n"
"produced, *self.needs_input* will be set to ``False``. In this case, the next\n"
"call to *decompress()* may provide *data* as b\'\' to obtain more of the output.\n"
"\n"
"If all of the input data was decompressed and returned (either because this\n"
"was less than *max_length* bytes, or because *max_length* was negative),\n"
"*self.needs_input* will be set to True.\n"
"\n"
"Attempting to decompress data after the end of a frame is reached raises an\n"
"EOFError. Any data found after the end of the frame is ignored and saved in\n"
"the self.unused_data attribute.");
#define _ZSTD_ZSTDDECOMPRESSOR_DECOMPRESS_METHODDEF \
{"decompress", _PyCFunction_CAST(_zstd_ZstdDecompressor_decompress), METH_FASTCALL|METH_KEYWORDS, _zstd_ZstdDecompressor_decompress__doc__},
static PyObject *
_zstd_ZstdDecompressor_decompress_impl(ZstdDecompressor *self,
Py_buffer *data,
Py_ssize_t max_length);
static PyObject *
_zstd_ZstdDecompressor_decompress(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
{
PyObject *return_value = NULL;
#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
#define NUM_KEYWORDS 2
static struct {
PyGC_Head _this_is_not_used;
PyObject_VAR_HEAD
Py_hash_t ob_hash;
PyObject *ob_item[NUM_KEYWORDS];
} _kwtuple = {
.ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
.ob_hash = -1,
.ob_item = { &_Py_ID(data), &_Py_ID(max_length), },
};
#undef NUM_KEYWORDS
#define KWTUPLE (&_kwtuple.ob_base.ob_base)
#else // !Py_BUILD_CORE
# define KWTUPLE NULL
#endif // !Py_BUILD_CORE
static const char * const _keywords[] = {"data", "max_length", NULL};
static _PyArg_Parser _parser = {
.keywords = _keywords,
.fname = "decompress",
.kwtuple = KWTUPLE,
};
#undef KWTUPLE
PyObject *argsbuf[2];
Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
Py_buffer data = {NULL, NULL};
Py_ssize_t max_length = -1;
args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
/*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
if (!args) {
goto exit;
}
if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
goto exit;
}
if (!noptargs) {
goto skip_optional_pos;
}
{
Py_ssize_t ival = -1;
PyObject *iobj = _PyNumber_Index(args[1]);
if (iobj != NULL) {
ival = PyLong_AsSsize_t(iobj);
Py_DECREF(iobj);
}
if (ival == -1 && PyErr_Occurred()) {
goto exit;
}
max_length = ival;
}
skip_optional_pos:
return_value = _zstd_ZstdDecompressor_decompress_impl((ZstdDecompressor *)self, &data, max_length);
exit:
/* Cleanup for data */
if (data.obj) {
PyBuffer_Release(&data);
}
return return_value;
}
/*[clinic end generated code: output=ae703f0465a2906d input=a9049054013a1b77]*/
|
