1 /*[clinic input]
2 preserve
3 [clinic start generated code]*/
4
5 PyDoc_STRVAR(_lzma_LZMACompressor_compress__doc__,
6 "compress($self, data, /)\n"
7 "--\n"
8 "\n"
9 "Provide data to the compressor object.\n"
10 "\n"
11 "Returns a chunk of compressed data if possible, or b\'\' otherwise.\n"
12 "\n"
13 "When you have finished providing data to the compressor, call the\n"
14 "flush() method to finish the compression process.");
15
16 #define _LZMA_LZMACOMPRESSOR_COMPRESS_METHODDEF \
17 {"compress", (PyCFunction)_lzma_LZMACompressor_compress, METH_O, _lzma_LZMACompressor_compress__doc__},
18
19 static PyObject *
20 _lzma_LZMACompressor_compress_impl(Compressor *self, Py_buffer *data);
21
22 static PyObject *
_lzma_LZMACompressor_compress(Compressor * self,PyObject * arg)23 _lzma_LZMACompressor_compress(Compressor *self, PyObject *arg)
24 {
25 PyObject *return_value = NULL;
26 Py_buffer data = {NULL, NULL};
27
28 if (PyObject_GetBuffer(arg, &data, PyBUF_SIMPLE) != 0) {
29 goto exit;
30 }
31 if (!PyBuffer_IsContiguous(&data, 'C')) {
32 _PyArg_BadArgument("compress", "argument", "contiguous buffer", arg);
33 goto exit;
34 }
35 return_value = _lzma_LZMACompressor_compress_impl(self, &data);
36
37 exit:
38 /* Cleanup for data */
39 if (data.obj) {
40 PyBuffer_Release(&data);
41 }
42
43 return return_value;
44 }
45
46 PyDoc_STRVAR(_lzma_LZMACompressor_flush__doc__,
47 "flush($self, /)\n"
48 "--\n"
49 "\n"
50 "Finish the compression process.\n"
51 "\n"
52 "Returns the compressed data left in internal buffers.\n"
53 "\n"
54 "The compressor object may not be used after this method is called.");
55
56 #define _LZMA_LZMACOMPRESSOR_FLUSH_METHODDEF \
57 {"flush", (PyCFunction)_lzma_LZMACompressor_flush, METH_NOARGS, _lzma_LZMACompressor_flush__doc__},
58
59 static PyObject *
60 _lzma_LZMACompressor_flush_impl(Compressor *self);
61
62 static PyObject *
_lzma_LZMACompressor_flush(Compressor * self,PyObject * Py_UNUSED (ignored))63 _lzma_LZMACompressor_flush(Compressor *self, PyObject *Py_UNUSED(ignored))
64 {
65 return _lzma_LZMACompressor_flush_impl(self);
66 }
67
68 PyDoc_STRVAR(_lzma_LZMADecompressor_decompress__doc__,
69 "decompress($self, /, data, max_length=-1)\n"
70 "--\n"
71 "\n"
72 "Decompress *data*, returning uncompressed data as bytes.\n"
73 "\n"
74 "If *max_length* is nonnegative, returns at most *max_length* bytes of\n"
75 "decompressed data. If this limit is reached and further output can be\n"
76 "produced, *self.needs_input* will be set to ``False``. In this case, the next\n"
77 "call to *decompress()* may provide *data* as b\'\' to obtain more of the output.\n"
78 "\n"
79 "If all of the input data was decompressed and returned (either because this\n"
80 "was less than *max_length* bytes, or because *max_length* was negative),\n"
81 "*self.needs_input* will be set to True.\n"
82 "\n"
83 "Attempting to decompress data after the end of stream is reached raises an\n"
84 "EOFError. Any data found after the end of the stream is ignored and saved in\n"
85 "the unused_data attribute.");
86
87 #define _LZMA_LZMADECOMPRESSOR_DECOMPRESS_METHODDEF \
88 {"decompress", (PyCFunction)(void(*)(void))_lzma_LZMADecompressor_decompress, METH_FASTCALL|METH_KEYWORDS, _lzma_LZMADecompressor_decompress__doc__},
89
90 static PyObject *
91 _lzma_LZMADecompressor_decompress_impl(Decompressor *self, Py_buffer *data,
92 Py_ssize_t max_length);
93
94 static PyObject *
_lzma_LZMADecompressor_decompress(Decompressor * self,PyObject * const * args,Py_ssize_t nargs,PyObject * kwnames)95 _lzma_LZMADecompressor_decompress(Decompressor *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
96 {
97 PyObject *return_value = NULL;
98 static const char * const _keywords[] = {"data", "max_length", NULL};
99 static _PyArg_Parser _parser = {NULL, _keywords, "decompress", 0};
100 PyObject *argsbuf[2];
101 Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
102 Py_buffer data = {NULL, NULL};
103 Py_ssize_t max_length = -1;
104
105 args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 2, 0, argsbuf);
106 if (!args) {
107 goto exit;
108 }
109 if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
110 goto exit;
111 }
112 if (!PyBuffer_IsContiguous(&data, 'C')) {
113 _PyArg_BadArgument("decompress", "argument 'data'", "contiguous buffer", args[0]);
114 goto exit;
115 }
116 if (!noptargs) {
117 goto skip_optional_pos;
118 }
119 if (PyFloat_Check(args[1])) {
120 PyErr_SetString(PyExc_TypeError,
121 "integer argument expected, got float" );
122 goto exit;
123 }
124 {
125 Py_ssize_t ival = -1;
126 PyObject *iobj = PyNumber_Index(args[1]);
127 if (iobj != NULL) {
128 ival = PyLong_AsSsize_t(iobj);
129 Py_DECREF(iobj);
130 }
131 if (ival == -1 && PyErr_Occurred()) {
132 goto exit;
133 }
134 max_length = ival;
135 }
136 skip_optional_pos:
137 return_value = _lzma_LZMADecompressor_decompress_impl(self, &data, max_length);
138
139 exit:
140 /* Cleanup for data */
141 if (data.obj) {
142 PyBuffer_Release(&data);
143 }
144
145 return return_value;
146 }
147
148 PyDoc_STRVAR(_lzma_LZMADecompressor___init____doc__,
149 "LZMADecompressor(format=FORMAT_AUTO, memlimit=None, filters=None)\n"
150 "--\n"
151 "\n"
152 "Create a decompressor object for decompressing data incrementally.\n"
153 "\n"
154 " format\n"
155 " Specifies the container format of the input stream. If this is\n"
156 " FORMAT_AUTO (the default), the decompressor will automatically detect\n"
157 " whether the input is FORMAT_XZ or FORMAT_ALONE. Streams created with\n"
158 " FORMAT_RAW cannot be autodetected.\n"
159 " memlimit\n"
160 " Limit the amount of memory used by the decompressor. This will cause\n"
161 " decompression to fail if the input cannot be decompressed within the\n"
162 " given limit.\n"
163 " filters\n"
164 " A custom filter chain. This argument is required for FORMAT_RAW, and\n"
165 " not accepted with any other format. When provided, this should be a\n"
166 " sequence of dicts, each indicating the ID and options for a single\n"
167 " filter.\n"
168 "\n"
169 "For one-shot decompression, use the decompress() function instead.");
170
171 static int
172 _lzma_LZMADecompressor___init___impl(Decompressor *self, int format,
173 PyObject *memlimit, PyObject *filters);
174
175 static int
_lzma_LZMADecompressor___init__(PyObject * self,PyObject * args,PyObject * kwargs)176 _lzma_LZMADecompressor___init__(PyObject *self, PyObject *args, PyObject *kwargs)
177 {
178 int return_value = -1;
179 static const char * const _keywords[] = {"format", "memlimit", "filters", NULL};
180 static _PyArg_Parser _parser = {NULL, _keywords, "LZMADecompressor", 0};
181 PyObject *argsbuf[3];
182 PyObject * const *fastargs;
183 Py_ssize_t nargs = PyTuple_GET_SIZE(args);
184 Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
185 int format = FORMAT_AUTO;
186 PyObject *memlimit = Py_None;
187 PyObject *filters = Py_None;
188
189 fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 0, 3, 0, argsbuf);
190 if (!fastargs) {
191 goto exit;
192 }
193 if (!noptargs) {
194 goto skip_optional_pos;
195 }
196 if (fastargs[0]) {
197 if (PyFloat_Check(fastargs[0])) {
198 PyErr_SetString(PyExc_TypeError,
199 "integer argument expected, got float" );
200 goto exit;
201 }
202 format = _PyLong_AsInt(fastargs[0]);
203 if (format == -1 && PyErr_Occurred()) {
204 goto exit;
205 }
206 if (!--noptargs) {
207 goto skip_optional_pos;
208 }
209 }
210 if (fastargs[1]) {
211 memlimit = fastargs[1];
212 if (!--noptargs) {
213 goto skip_optional_pos;
214 }
215 }
216 filters = fastargs[2];
217 skip_optional_pos:
218 return_value = _lzma_LZMADecompressor___init___impl((Decompressor *)self, format, memlimit, filters);
219
220 exit:
221 return return_value;
222 }
223
224 PyDoc_STRVAR(_lzma_is_check_supported__doc__,
225 "is_check_supported($module, check_id, /)\n"
226 "--\n"
227 "\n"
228 "Test whether the given integrity check is supported.\n"
229 "\n"
230 "Always returns True for CHECK_NONE and CHECK_CRC32.");
231
232 #define _LZMA_IS_CHECK_SUPPORTED_METHODDEF \
233 {"is_check_supported", (PyCFunction)_lzma_is_check_supported, METH_O, _lzma_is_check_supported__doc__},
234
235 static PyObject *
236 _lzma_is_check_supported_impl(PyObject *module, int check_id);
237
238 static PyObject *
_lzma_is_check_supported(PyObject * module,PyObject * arg)239 _lzma_is_check_supported(PyObject *module, PyObject *arg)
240 {
241 PyObject *return_value = NULL;
242 int check_id;
243
244 if (PyFloat_Check(arg)) {
245 PyErr_SetString(PyExc_TypeError,
246 "integer argument expected, got float" );
247 goto exit;
248 }
249 check_id = _PyLong_AsInt(arg);
250 if (check_id == -1 && PyErr_Occurred()) {
251 goto exit;
252 }
253 return_value = _lzma_is_check_supported_impl(module, check_id);
254
255 exit:
256 return return_value;
257 }
258
259 PyDoc_STRVAR(_lzma__encode_filter_properties__doc__,
260 "_encode_filter_properties($module, filter, /)\n"
261 "--\n"
262 "\n"
263 "Return a bytes object encoding the options (properties) of the filter specified by *filter* (a dict).\n"
264 "\n"
265 "The result does not include the filter ID itself, only the options.");
266
267 #define _LZMA__ENCODE_FILTER_PROPERTIES_METHODDEF \
268 {"_encode_filter_properties", (PyCFunction)_lzma__encode_filter_properties, METH_O, _lzma__encode_filter_properties__doc__},
269
270 static PyObject *
271 _lzma__encode_filter_properties_impl(PyObject *module, lzma_filter filter);
272
273 static PyObject *
_lzma__encode_filter_properties(PyObject * module,PyObject * arg)274 _lzma__encode_filter_properties(PyObject *module, PyObject *arg)
275 {
276 PyObject *return_value = NULL;
277 lzma_filter filter = {LZMA_VLI_UNKNOWN, NULL};
278
279 if (!lzma_filter_converter(arg, &filter)) {
280 goto exit;
281 }
282 return_value = _lzma__encode_filter_properties_impl(module, filter);
283
284 exit:
285 /* Cleanup for filter */
286 if (filter.id != LZMA_VLI_UNKNOWN)
287 PyMem_Free(filter.options);
288
289 return return_value;
290 }
291
292 PyDoc_STRVAR(_lzma__decode_filter_properties__doc__,
293 "_decode_filter_properties($module, filter_id, encoded_props, /)\n"
294 "--\n"
295 "\n"
296 "Return a bytes object encoding the options (properties) of the filter specified by *filter* (a dict).\n"
297 "\n"
298 "The result does not include the filter ID itself, only the options.");
299
300 #define _LZMA__DECODE_FILTER_PROPERTIES_METHODDEF \
301 {"_decode_filter_properties", (PyCFunction)(void(*)(void))_lzma__decode_filter_properties, METH_FASTCALL, _lzma__decode_filter_properties__doc__},
302
303 static PyObject *
304 _lzma__decode_filter_properties_impl(PyObject *module, lzma_vli filter_id,
305 Py_buffer *encoded_props);
306
307 static PyObject *
_lzma__decode_filter_properties(PyObject * module,PyObject * const * args,Py_ssize_t nargs)308 _lzma__decode_filter_properties(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
309 {
310 PyObject *return_value = NULL;
311 lzma_vli filter_id;
312 Py_buffer encoded_props = {NULL, NULL};
313
314 if (!_PyArg_CheckPositional("_decode_filter_properties", nargs, 2, 2)) {
315 goto exit;
316 }
317 if (!lzma_vli_converter(args[0], &filter_id)) {
318 goto exit;
319 }
320 if (PyObject_GetBuffer(args[1], &encoded_props, PyBUF_SIMPLE) != 0) {
321 goto exit;
322 }
323 if (!PyBuffer_IsContiguous(&encoded_props, 'C')) {
324 _PyArg_BadArgument("_decode_filter_properties", "argument 2", "contiguous buffer", args[1]);
325 goto exit;
326 }
327 return_value = _lzma__decode_filter_properties_impl(module, filter_id, &encoded_props);
328
329 exit:
330 /* Cleanup for encoded_props */
331 if (encoded_props.obj) {
332 PyBuffer_Release(&encoded_props);
333 }
334
335 return return_value;
336 }
337 /*[clinic end generated code: output=f7477a10e86a717d input=a9049054013a1b77]*/
338