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Issue #20193: The _lzma module now uses Argument Clinic. 

LZMACompressor.__init__ is left not converted.
This commit is contained in:
Serhiy Storchaka 2014-01-25 14:02:29 +02:00
parent df9db26902
commit 98c779e8da
2 changed files with 434 additions and 146 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

349
Modules/_lzmamodule.c
View File

@ -298,36 +298,37 @@ parse_filter_spec_bcj(PyObject *spec)
return options;
}
static void *
parse_filter_spec(lzma_filter *f, PyObject *spec)
static int
lzma_filter_converter(PyObject *spec, void *ptr)
{
lzma_filter *f = (lzma_filter *)ptr;
PyObject *id_obj;
if (!PyMapping_Check(spec)) {
PyErr_SetString(PyExc_TypeError,
"Filter specifier must be a dict or dict-like object");
return NULL;
return 0;
}
id_obj = PyMapping_GetItemString(spec, "id");
if (id_obj == NULL) {
if (PyErr_ExceptionMatches(PyExc_KeyError))
PyErr_SetString(PyExc_ValueError,
"Filter specifier must have an \"id\" entry");
return NULL;
return 0;
}
f->id = PyLong_AsUnsignedLongLong(id_obj);
Py_DECREF(id_obj);
if (PyErr_Occurred())
return NULL;
return 0;
switch (f->id) {
case LZMA_FILTER_LZMA1:
case LZMA_FILTER_LZMA2:
f->options = parse_filter_spec_lzma(spec);
return f->options;
return f->options != NULL;
case LZMA_FILTER_DELTA:
f->options = parse_filter_spec_delta(spec);
return f->options;
return f->options != NULL;
case LZMA_FILTER_X86:
case LZMA_FILTER_POWERPC:
case LZMA_FILTER_IA64:
@ -335,10 +336,10 @@ parse_filter_spec(lzma_filter *f, PyObject *spec)
case LZMA_FILTER_ARMTHUMB:
case LZMA_FILTER_SPARC:
f->options = parse_filter_spec_bcj(spec);
return f->options;
return f->options != NULL;
default:
PyErr_Format(PyExc_ValueError, "Invalid filter ID: %llu", f->id);
return NULL;
return 0;
}
}
@ -369,7 +370,7 @@ parse_filter_chain_spec(lzma_filter filters[], PyObject *filterspecs)
for (i = 0; i < num_filters; i++) {
int ok = 1;
PyObject *spec = PySequence_GetItem(filterspecs, i);
if (spec == NULL || parse_filter_spec(&filters[i], spec) == NULL)
if (spec == NULL || !lzma_filter_converter(spec, &filters[i]))
ok = 0;
Py_XDECREF(spec);
if (!ok) {
@ -468,6 +469,36 @@ error:
}
/*[clinic input]
output preset file
module _lzma
class _lzma.LZMACompressor
class _lzma.LZMADecompressor
[clinic start generated code]*/
/*[clinic end generated code: checksum=da39a3ee5e6b4b0d3255bfef95601890afd80709]*/
#include "_lzmamodule.clinic.c"
/*[python input]
class lzma_vli_converter(CConverter):
type = 'lzma_vli'
converter = 'lzma_vli_converter'
class lzma_filter_converter(CConverter):
type = 'lzma_filter'
converter = 'lzma_filter_converter'
c_default = c_ignored_default = "{LZMA_VLI_UNKNOWN, NULL}"
def cleanup(self):
name = ensure_legal_c_identifier(self.name)
return ('if (%(name)s.id != LZMA_VLI_UNKNOWN)\n'
' PyMem_Free(%(name)s.options);\n') % {'name': name}
[python start generated code]*/
/*[python end generated code: checksum=da39a3ee5e6b4b0d3255bfef95601890afd80709]*/
/* LZMACompressor class. */
static PyObject *
@ -512,44 +543,51 @@ error:
return NULL;
}
PyDoc_STRVAR(Compressor_compress_doc,
"compress(data) -> bytes\n"
"\n"
"Provide data to the compressor object. Returns a chunk of\n"
"compressed data if possible, or b\"\" otherwise.\n"
"\n"
"When you have finished providing data to the compressor, call the\n"
"flush() method to finish the conversion process.\n");
/*[clinic input]
_lzma.LZMACompressor.compress
self: self(type="Compressor *")
data: Py_buffer
/
Provide data to the compressor object.
Returns a chunk of compressed data if possible, or b'' otherwise.
When you have finished providing data to the compressor, call the
flush() method to finish the compression process.
[clinic start generated code]*/
static PyObject *
Compressor_compress(Compressor *self, PyObject *args)
_lzma_LZMACompressor_compress_impl(Compressor *self, Py_buffer *data)
/*[clinic end generated code: checksum=31f615136963e00f26f8be33440ec1e3604565ba]*/
{
Py_buffer buffer;
PyObject *result = NULL;
if (!PyArg_ParseTuple(args, "y*:compress", &buffer))
return NULL;
ACQUIRE_LOCK(self);
if (self->flushed)
PyErr_SetString(PyExc_ValueError, "Compressor has been flushed");
else
result = compress(self, buffer.buf, buffer.len, LZMA_RUN);
result = compress(self, data->buf, data->len, LZMA_RUN);
RELEASE_LOCK(self);
PyBuffer_Release(&buffer);
return result;
}
PyDoc_STRVAR(Compressor_flush_doc,
"flush() -> bytes\n"
"\n"
"Finish the compression process. Returns the compressed data left\n"
"in internal buffers.\n"
"\n"
"The compressor object cannot be used after this method is called.\n");
/*[clinic input]
_lzma.LZMACompressor.flush
self: self(type="Compressor *")
Finish the compression process.
Returns the compressed data left in internal buffers.
The compressor object may not be used after this method is called.
[clinic start generated code]*/
static PyObject *
Compressor_flush(Compressor *self, PyObject *noargs)
_lzma_LZMACompressor_flush_impl(Compressor *self)
/*[clinic end generated code: checksum=fec21f3e22504f500606ba60e1ba70d79eb22188]*/
{
PyObject *result = NULL;
@ -650,6 +688,39 @@ Compressor_init_raw(lzma_stream *lzs, PyObject *filterspecs)
return 0;
}
/*[-clinic input]
_lzma.LZMACompressor.__init__
self: self(type="Compressor *")
format: int(c_default="FORMAT_XZ") = FORMAT_XZ
The container format to use for the output. This can
be FORMAT_XZ (default), FORMAT_ALONE, or FORMAT_RAW.
check: int(c_default="-1") = unspecified
The integrity check to use. For FORMAT_XZ, the default
is CHECK_CRC64. FORMAT_ALONE and FORMAT_RAW do not suport integrity
checks; for these formats, check must be omitted, or be CHECK_NONE.
preset: object = None
If provided should be an integer in the range 0-9, optionally
OR-ed with the constant PRESET_EXTREME.
filters: object = None
If provided should be a sequence of dicts. Each dict should
have an entry for "id" indicating the ID of the filter, plus
additional entries for options to the filter.
Create a compressor object for compressing data incrementally.
The settings used by the compressor can be specified either as a
preset compression level (with the 'preset' argument), or in detail
as a custom filter chain (with the 'filters' argument). For FORMAT_XZ
and FORMAT_ALONE, the default is to use the PRESET_DEFAULT preset
level. For FORMAT_RAW, the caller must always specify a filter chain;
the raw compressor does not support preset compression levels.
For one-shot compression, use the compress() function instead.
[-clinic start generated code]*/
static int
Compressor_init(Compressor *self, PyObject *args, PyObject *kwargs)
{
@ -739,10 +810,8 @@ Compressor_dealloc(Compressor *self)
}
static PyMethodDef Compressor_methods[] = {
{"compress", (PyCFunction)Compressor_compress, METH_VARARGS,
Compressor_compress_doc},
{"flush", (PyCFunction)Compressor_flush, METH_NOARGS,
Compressor_flush_doc},
_LZMA_LZMACOMPRESSOR_COMPRESS_METHODDEF
_LZMA_LZMACOMPRESSOR_FLUSH_METHODDEF
{"__getstate__", (PyCFunction)Compressor_getstate, METH_NOARGS},
{NULL}
};
@ -872,32 +941,34 @@ error:
return NULL;
}
PyDoc_STRVAR(Decompressor_decompress_doc,
"decompress(data) -> bytes\n"
"\n"
"Provide data to the decompressor object. Returns a chunk of\n"
"decompressed data if possible, or b\"\" otherwise.\n"
"\n"
"Attempting to decompress data after the end of the stream is\n"
"reached raises an EOFError. Any data found after the end of the\n"
"stream is ignored, and saved in the unused_data attribute.\n");
/*[clinic input]
_lzma.LZMADecompressor.decompress
self: self(type="Decompressor *")
data: Py_buffer
/
Provide data to the decompressor object.
Returns a chunk of decompressed data if possible, or b'' otherwise.
Attempting to decompress data after the end of stream is reached
raises an EOFError. Any data found after the end of the stream
is ignored and saved in the unused_data attribute.
[clinic start generated code]*/
static PyObject *
Decompressor_decompress(Decompressor *self, PyObject *args)
_lzma_LZMADecompressor_decompress_impl(Decompressor *self, Py_buffer *data)
/*[clinic end generated code: checksum=d86e78da7ff0ff219d511275b16b79476da8922e]*/
{
Py_buffer buffer;
PyObject *result = NULL;
if (!PyArg_ParseTuple(args, "y*:decompress", &buffer))
return NULL;
ACQUIRE_LOCK(self);
if (self->eof)
PyErr_SetString(PyExc_EOFError, "Already at end of stream");
else
result = decompress(self, buffer.buf, buffer.len);
result = decompress(self, data->buf, data->len);
RELEASE_LOCK(self);
PyBuffer_Release(&buffer);
return result;
}
@ -925,38 +996,56 @@ Decompressor_init_raw(lzma_stream *lzs, PyObject *filterspecs)
return 0;
}
/*[clinic input]
_lzma.LZMADecompressor.__init__
self: self(type="Decompressor *")
format: int(c_default="FORMAT_AUTO") = FORMAT_AUTO
Specifies the container format of the input stream. If this is
FORMAT_AUTO (the default), the decompressor will automatically detect
whether the input is FORMAT_XZ or FORMAT_ALONE. Streams created with
FORMAT_RAW cannot be autodetected.
memlimit: object = None
Limit the amount of memory used by the decompressor. This will cause
decompression to fail if the input cannot be decompressed within the
given limit.
filters: object = None
A custom filter chain. This argument is required for FORMAT_RAW, and
not accepted with any other format. When provided, this should be a
sequence of dicts, each indicating the ID and options for a single
filter.
Create a decompressor object for decompressing data incrementally.
For one-shot decompression, use the decompress() function instead.
[clinic start generated code]*/
static int
Decompressor_init(Decompressor *self, PyObject *args, PyObject *kwargs)
_lzma_LZMADecompressor___init___impl(Decompressor *self, int format, PyObject *memlimit, PyObject *filters)
/*[clinic end generated code: checksum=9b119f6f2cc2d7a8e5be41c164a6c080ee82d0c2]*/
{
static char *arg_names[] = {"format", "memlimit", "filters", NULL};
const uint32_t decoder_flags = LZMA_TELL_ANY_CHECK | LZMA_TELL_NO_CHECK;
int format = FORMAT_AUTO;
uint64_t memlimit = UINT64_MAX;
PyObject *memlimit_obj = Py_None;
PyObject *filterspecs = Py_None;
uint64_t memlimit_ = UINT64_MAX;
lzma_ret lzret;
if (!PyArg_ParseTupleAndKeywords(args, kwargs,
"|iOO:LZMADecompressor", arg_names,
&format, &memlimit_obj, &filterspecs))
return -1;
if (memlimit_obj != Py_None) {
if (memlimit != Py_None) {
if (format == FORMAT_RAW) {
PyErr_SetString(PyExc_ValueError,
"Cannot specify memory limit with FORMAT_RAW");
return -1;
}
memlimit = PyLong_AsUnsignedLongLong(memlimit_obj);
memlimit_ = PyLong_AsUnsignedLongLong(memlimit);
if (PyErr_Occurred())
return -1;
}
if (format == FORMAT_RAW && filterspecs == Py_None) {
if (format == FORMAT_RAW && filters == Py_None) {
PyErr_SetString(PyExc_ValueError,
"Must specify filters for FORMAT_RAW");
return -1;
} else if (format != FORMAT_RAW && filterspecs != Py_None) {
} else if (format != FORMAT_RAW && filters != Py_None) {
PyErr_SetString(PyExc_ValueError,
"Cannot specify filters except with FORMAT_RAW");
return -1;
@ -982,27 +1071,27 @@ Decompressor_init(Decompressor *self, PyObject *args, PyObject *kwargs)
switch (format) {
case FORMAT_AUTO:
lzret = lzma_auto_decoder(&self->lzs, memlimit, decoder_flags);
lzret = lzma_auto_decoder(&self->lzs, memlimit_, decoder_flags);
if (catch_lzma_error(lzret))
break;
return 0;
case FORMAT_XZ:
lzret = lzma_stream_decoder(&self->lzs, memlimit, decoder_flags);
lzret = lzma_stream_decoder(&self->lzs, memlimit_, decoder_flags);
if (catch_lzma_error(lzret))
break;
return 0;
case FORMAT_ALONE:
self->check = LZMA_CHECK_NONE;
lzret = lzma_alone_decoder(&self->lzs, memlimit);
lzret = lzma_alone_decoder(&self->lzs, memlimit_);
if (catch_lzma_error(lzret))
break;
return 0;
case FORMAT_RAW:
self->check = LZMA_CHECK_NONE;
if (Decompressor_init_raw(&self->lzs, filterspecs) == -1)
if (Decompressor_init_raw(&self->lzs, filters) == -1)
break;
return 0;
@ -1034,8 +1123,7 @@ Decompressor_dealloc(Decompressor *self)
}
static PyMethodDef Decompressor_methods[] = {
{"decompress", (PyCFunction)Decompressor_decompress, METH_VARARGS,
Decompressor_decompress_doc},
_LZMA_LZMADECOMPRESSOR_DECOMPRESS_METHODDEF
{"__getstate__", (PyCFunction)Decompressor_getstate, METH_NOARGS},
{NULL}
};
@ -1059,27 +1147,6 @@ static PyMemberDef Decompressor_members[] = {
{NULL}
};
PyDoc_STRVAR(Decompressor_doc,
"LZMADecompressor(format=FORMAT_AUTO, memlimit=None, filters=None)\n"
"\n"
"Create a decompressor object for decompressing data incrementally.\n"
"\n"
"format specifies the container format of the input stream. If this is\n"
"FORMAT_AUTO (the default), the decompressor will automatically detect\n"
"whether the input is FORMAT_XZ or FORMAT_ALONE. Streams created with\n"
"FORMAT_RAW cannot be autodetected.\n"
"\n"
"memlimit can be specified to limit the amount of memory used by the\n"
"decompressor. This will cause decompression to fail if the input\n"
"cannot be decompressed within the given limit.\n"
"\n"
"filters specifies a custom filter chain. This argument is required for\n"
"FORMAT_RAW, and not accepted with any other format. When provided,\n"
"this should be a sequence of dicts, each indicating the ID and options\n"
"for a single filter.\n"
"\n"
"For one-shot decompression, use the decompress() function instead.\n");
static PyTypeObject Decompressor_type = {
PyVarObject_HEAD_INIT(NULL, 0)
"_lzma.LZMADecompressor", /* tp_name */
@ -1101,7 +1168,7 @@ static PyTypeObject Decompressor_type = {
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
Decompressor_doc, /* tp_doc */
_lzma_LZMADecompressor___init____doc__, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
@ -1116,7 +1183,7 @@ static PyTypeObject Decompressor_type = {
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)Decompressor_init, /* tp_init */
_lzma_LZMADecompressor___init__, /* tp_init */
0, /* tp_alloc */
PyType_GenericNew, /* tp_new */
};
@ -1124,48 +1191,42 @@ static PyTypeObject Decompressor_type = {
/* Module-level functions. */
PyDoc_STRVAR(is_check_supported_doc,
"is_check_supported(check_id) -> bool\n"
"\n"
"Test whether the given integrity check is supported.\n"
"\n"
"Always returns True for CHECK_NONE and CHECK_CRC32.\n");
/*[clinic input]
_lzma.is_check_supported
check_id: int
/
Test whether the given integrity check is supported.
Always returns True for CHECK_NONE and CHECK_CRC32.
[clinic start generated code]*/
static PyObject *
is_check_supported(PyObject *self, PyObject *args)
_lzma_is_check_supported_impl(PyModuleDef *module, int check_id)
/*[clinic end generated code: checksum=bb828e90e00ad96ed61f66719c2fca7fde637418]*/
{
int check_id;
if (!PyArg_ParseTuple(args, "i:is_check_supported", &check_id))
return NULL;
return PyBool_FromLong(lzma_check_is_supported(check_id));
}
PyDoc_STRVAR(_encode_filter_properties_doc,
"_encode_filter_properties(filter) -> bytes\n"
"\n"
"Return a bytes object encoding the options (properties) of the filter\n"
"specified by *filter* (a dict).\n"
"\n"
"The result does not include the filter ID itself, only the options.\n");
/*[clinic input]
_lzma._encode_filter_properties
filter: lzma_filter(c_default="{LZMA_VLI_UNKNOWN, NULL}")
/
Return a bytes object encoding the options (properties) of the filter specified by *filter* (a dict).
The result does not include the filter ID itself, only the options.
[clinic start generated code]*/
static PyObject *
_encode_filter_properties(PyObject *self, PyObject *args)
_lzma__encode_filter_properties_impl(PyModuleDef *module, lzma_filter filter)
/*[clinic end generated code: checksum=b5fe690acd6b61d1abfc32f522ada5bdcf9b13da]*/
{
PyObject *filterspec;
lzma_filter filter;
lzma_ret lzret;
uint32_t encoded_size;
PyObject *result = NULL;
if (!PyArg_ParseTuple(args, "O:_encode_filter_properties", &filterspec))
return NULL;
if (parse_filter_spec(&filter, filterspec) == NULL)
return NULL;
lzret = lzma_properties_size(&encoded_size, &filter);
if (catch_lzma_error(lzret))
goto error;
@ -1179,37 +1240,36 @@ _encode_filter_properties(PyObject *self, PyObject *args)
if (catch_lzma_error(lzret))
goto error;
PyMem_Free(filter.options);
return result;
error:
Py_XDECREF(result);
PyMem_Free(filter.options);
return NULL;
}
PyDoc_STRVAR(_decode_filter_properties_doc,
"_decode_filter_properties(filter_id, encoded_props) -> dict\n"
"\n"
"Return a dict describing a filter with ID *filter_id*, and options\n"
"(properties) decoded from the bytes object *encoded_props*.\n");
/*[clinic input]
_lzma._decode_filter_properties
filter_id: lzma_vli
encoded_props: Py_buffer
/
Return a bytes object encoding the options (properties) of the filter specified by *filter* (a dict).
The result does not include the filter ID itself, only the options.
[clinic start generated code]*/
static PyObject *
_decode_filter_properties(PyObject *self, PyObject *args)
_lzma__decode_filter_properties_impl(PyModuleDef *module, lzma_vli filter_id, Py_buffer *encoded_props)
/*[clinic end generated code: checksum=235f7f5345d48744dcd21f781dafbbf05a717538]*/
{
Py_buffer encoded_props;
lzma_filter filter;
lzma_ret lzret;
PyObject *result = NULL;
if (!PyArg_ParseTuple(args, "O&y*:_decode_filter_properties",
lzma_vli_converter, &filter.id, &encoded_props))
return NULL;
filter.id = filter_id;
lzret = lzma_properties_decode(
&filter, NULL, encoded_props.buf, encoded_props.len);
PyBuffer_Release(&encoded_props);
&filter, NULL, encoded_props->buf, encoded_props->len);
if (catch_lzma_error(lzret))
return NULL;
@ -1225,12 +1285,9 @@ _decode_filter_properties(PyObject *self, PyObject *args)
/* Module initialization. */
static PyMethodDef module_methods[] = {
{"is_check_supported", (PyCFunction)is_check_supported,
METH_VARARGS, is_check_supported_doc},
{"_encode_filter_properties", (PyCFunction)_encode_filter_properties,
METH_VARARGS, _encode_filter_properties_doc},
{"_decode_filter_properties", (PyCFunction)_decode_filter_properties,
METH_VARARGS, _decode_filter_properties_doc},
_LZMA_IS_CHECK_SUPPORTED_METHODDEF
_LZMA__ENCODE_FILTER_PROPERTIES_METHODDEF
_LZMA__DECODE_FILTER_PROPERTIES_METHODDEF
{NULL}
};

231
Modules/_lzmamodule.clinic.c Normal file
View File

@ -0,0 +1,231 @@
/*[clinic input]
preserve
[clinic start generated code]*/
PyDoc_STRVAR(_lzma_LZMACompressor_compress__doc__,
"compress(self, data)\n"
"Provide data to the compressor object.\n"
"\n"
"Returns a chunk of compressed data if possible, or b\'\' otherwise.\n"
"\n"
"When you have finished providing data to the compressor, call the\n"
"flush() method to finish the compression process.");
#define _LZMA_LZMACOMPRESSOR_COMPRESS_METHODDEF \
{"compress", (PyCFunction)_lzma_LZMACompressor_compress, METH_VARARGS, _lzma_LZMACompressor_compress__doc__},
static PyObject *
_lzma_LZMACompressor_compress_impl(Compressor *self, Py_buffer *data);
static PyObject *
_lzma_LZMACompressor_compress(Compressor *self, PyObject *args)
{
PyObject *return_value = NULL;
Py_buffer data = {NULL, NULL};
if (!PyArg_ParseTuple(args,
"y*:compress",
&data))
goto exit;
return_value = _lzma_LZMACompressor_compress_impl(self, &data);
exit:
/* Cleanup for data */
if (data.obj)
PyBuffer_Release(&data);
return return_value;
}
PyDoc_STRVAR(_lzma_LZMACompressor_flush__doc__,
"flush(self)\n"
"Finish the compression process.\n"
"\n"
"Returns the compressed data left in internal buffers.\n"
"\n"
"The compressor object may not be used after this method is called.");
#define _LZMA_LZMACOMPRESSOR_FLUSH_METHODDEF \
{"flush", (PyCFunction)_lzma_LZMACompressor_flush, METH_NOARGS, _lzma_LZMACompressor_flush__doc__},
static PyObject *
_lzma_LZMACompressor_flush_impl(Compressor *self);
static PyObject *
_lzma_LZMACompressor_flush(Compressor *self, PyObject *Py_UNUSED(ignored))
{
return _lzma_LZMACompressor_flush_impl(self);
}
PyDoc_STRVAR(_lzma_LZMADecompressor_decompress__doc__,
"decompress(self, data)\n"
"Provide data to the decompressor object.\n"
"\n"
"Returns a chunk of decompressed data if possible, or b\'\' otherwise.\n"
"\n"
"Attempting to decompress data after the end of stream is reached\n"
"raises an EOFError. Any data found after the end of the stream\n"
"is ignored and saved in the unused_data attribute.");
#define _LZMA_LZMADECOMPRESSOR_DECOMPRESS_METHODDEF \
{"decompress", (PyCFunction)_lzma_LZMADecompressor_decompress, METH_VARARGS, _lzma_LZMADecompressor_decompress__doc__},
static PyObject *
_lzma_LZMADecompressor_decompress_impl(Decompressor *self, Py_buffer *data);
static PyObject *
_lzma_LZMADecompressor_decompress(Decompressor *self, PyObject *args)
{
PyObject *return_value = NULL;
Py_buffer data = {NULL, NULL};
if (!PyArg_ParseTuple(args,
"y*:decompress",
&data))
goto exit;
return_value = _lzma_LZMADecompressor_decompress_impl(self, &data);
exit:
/* Cleanup for data */
if (data.obj)
PyBuffer_Release(&data);
return return_value;
}
PyDoc_STRVAR(_lzma_LZMADecompressor___init____doc__,
"LZMADecompressor(format=FORMAT_AUTO, memlimit=None, filters=None)\n"
"Create a decompressor object for decompressing data incrementally.\n"
"\n"
" format\n"
" Specifies the container format of the input stream. If this is\n"
" FORMAT_AUTO (the default), the decompressor will automatically detect\n"
" whether the input is FORMAT_XZ or FORMAT_ALONE. Streams created with\n"
" FORMAT_RAW cannot be autodetected.\n"
" memlimit\n"
" Limit the amount of memory used by the decompressor. This will cause\n"
" decompression to fail if the input cannot be decompressed within the\n"
" given limit.\n"
" filters\n"
" A custom filter chain. This argument is required for FORMAT_RAW, and\n"
" not accepted with any other format. When provided, this should be a\n"
" sequence of dicts, each indicating the ID and options for a single\n"
" filter.\n"
"\n"
"For one-shot decompression, use the decompress() function instead.");
static int
_lzma_LZMADecompressor___init___impl(Decompressor *self, int format, PyObject *memlimit, PyObject *filters);
static int
_lzma_LZMADecompressor___init__(PyObject *self, PyObject *args, PyObject *kwargs)
{
int return_value = -1;
static char *_keywords[] = {"format", "memlimit", "filters", NULL};
int format = FORMAT_AUTO;
PyObject *memlimit = Py_None;
PyObject *filters = Py_None;
if (!PyArg_ParseTupleAndKeywords(args, kwargs,
"|iOO:LZMADecompressor", _keywords,
&format, &memlimit, &filters))
goto exit;
return_value = _lzma_LZMADecompressor___init___impl((Decompressor *)self, format, memlimit, filters);
exit:
return return_value;
}
PyDoc_STRVAR(_lzma_is_check_supported__doc__,
"is_check_supported(module, check_id)\n"
"Test whether the given integrity check is supported.\n"
"\n"
"Always returns True for CHECK_NONE and CHECK_CRC32.");
#define _LZMA_IS_CHECK_SUPPORTED_METHODDEF \
{"is_check_supported", (PyCFunction)_lzma_is_check_supported, METH_VARARGS, _lzma_is_check_supported__doc__},
static PyObject *
_lzma_is_check_supported_impl(PyModuleDef *module, int check_id);
static PyObject *
_lzma_is_check_supported(PyModuleDef *module, PyObject *args)
{
PyObject *return_value = NULL;
int check_id;
if (!PyArg_ParseTuple(args,
"i:is_check_supported",
&check_id))
goto exit;
return_value = _lzma_is_check_supported_impl(module, check_id);
exit:
return return_value;
}
PyDoc_STRVAR(_lzma__encode_filter_properties__doc__,
"_encode_filter_properties(module, filter)\n"
"Return a bytes object encoding the options (properties) of the filter specified by *filter* (a dict).\n"
"\n"
"The result does not include the filter ID itself, only the options.");
#define _LZMA__ENCODE_FILTER_PROPERTIES_METHODDEF \
{"_encode_filter_properties", (PyCFunction)_lzma__encode_filter_properties, METH_VARARGS, _lzma__encode_filter_properties__doc__},
static PyObject *
_lzma__encode_filter_properties_impl(PyModuleDef *module, lzma_filter filter);
static PyObject *
_lzma__encode_filter_properties(PyModuleDef *module, PyObject *args)
{
PyObject *return_value = NULL;
lzma_filter filter = {LZMA_VLI_UNKNOWN, NULL};
if (!PyArg_ParseTuple(args,
"O&:_encode_filter_properties",
lzma_filter_converter, &filter))
goto exit;
return_value = _lzma__encode_filter_properties_impl(module, filter);
exit:
/* Cleanup for filter */
if (filter.id != LZMA_VLI_UNKNOWN)
PyMem_Free(filter.options);
return return_value;
}
PyDoc_STRVAR(_lzma__decode_filter_properties__doc__,
"_decode_filter_properties(module, filter_id, encoded_props)\n"
"Return a bytes object encoding the options (properties) of the filter specified by *filter* (a dict).\n"
"\n"
"The result does not include the filter ID itself, only the options.");
#define _LZMA__DECODE_FILTER_PROPERTIES_METHODDEF \
{"_decode_filter_properties", (PyCFunction)_lzma__decode_filter_properties, METH_VARARGS, _lzma__decode_filter_properties__doc__},
static PyObject *
_lzma__decode_filter_properties_impl(PyModuleDef *module, lzma_vli filter_id, Py_buffer *encoded_props);
static PyObject *
_lzma__decode_filter_properties(PyModuleDef *module, PyObject *args)
{
PyObject *return_value = NULL;
lzma_vli filter_id;
Py_buffer encoded_props = {NULL, NULL};
if (!PyArg_ParseTuple(args,
"O&y*:_decode_filter_properties",
lzma_vli_converter, &filter_id, &encoded_props))
goto exit;
return_value = _lzma__decode_filter_properties_impl(module, filter_id, &encoded_props);
exit:
/* Cleanup for encoded_props */
if (encoded_props.obj)
PyBuffer_Release(&encoded_props);
return return_value;
}
/*[clinic end generated code: checksum=b4b90dcbd0c9c349c3a94e26a7eecf71aab179a0]*/