Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 1 | /* zlibmodule.c -- gzip-compatible data compression */ |
Mark Hammond | ae8c268 | 2001-01-31 10:28:03 +0000 | [diff] [blame^] | 2 | /* See http://www.info-zip.org/pub/infozip/zlib/ */ |
| 3 | |
| 4 | /* *** Notes for Windows Users *** |
| 5 | * Download the source distribution as referenced above. |
| 6 | * Unpack the distribution such that a "..\..\zlib-1.1.3" directory is created |
| 7 | relative to the "pcbuild" directory. |
| 8 | * Build this "zlib" project. Via from MSVC magic, the correct zlib makefile will |
| 9 | be run, and "..\..\zlib-1.1.3\zlib.lib" will be built before zlib.pyd. |
| 10 | *** End of notes for Windows users *** |
| 11 | */ |
| 12 | |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 13 | |
Guido van Rossum | 97b5457 | 1997-06-03 22:21:47 +0000 | [diff] [blame] | 14 | #include "Python.h" |
| 15 | #include "zlib.h" |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 16 | |
| 17 | /* The following parameters are copied from zutil.h, version 0.95 */ |
| 18 | #define DEFLATED 8 |
| 19 | #if MAX_MEM_LEVEL >= 8 |
| 20 | # define DEF_MEM_LEVEL 8 |
| 21 | #else |
| 22 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL |
| 23 | #endif |
| 24 | #define DEF_WBITS MAX_WBITS |
| 25 | |
Guido van Rossum | b729a1d | 1999-04-07 20:23:17 +0000 | [diff] [blame] | 26 | /* The output buffer will be increased in chunks of DEFAULTALLOC bytes. */ |
| 27 | #define DEFAULTALLOC (16*1024) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 28 | #define PyInit_zlib initzlib |
| 29 | |
| 30 | staticforward PyTypeObject Comptype; |
| 31 | staticforward PyTypeObject Decomptype; |
| 32 | |
| 33 | static PyObject *ZlibError; |
| 34 | |
| 35 | typedef struct |
| 36 | { |
| 37 | PyObject_HEAD |
| 38 | z_stream zst; |
Andrew M. Kuchling | b95227d | 1999-03-25 21:21:08 +0000 | [diff] [blame] | 39 | PyObject *unused_data; |
Andrew M. Kuchling | 1c7aaa2 | 1999-01-29 21:49:34 +0000 | [diff] [blame] | 40 | int is_initialised; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 41 | } compobject; |
| 42 | |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 43 | static char compressobj__doc__[] = |
| 44 | "compressobj() -- Return a compressor object.\n" |
| 45 | "compressobj(level) -- Return a compressor object, using the given compression level.\n" |
| 46 | ; |
| 47 | |
| 48 | static char decompressobj__doc__[] = |
| 49 | "decompressobj() -- Return a decompressor object.\n" |
| 50 | "decompressobj(wbits) -- Return a decompressor object, setting the window buffer size to wbits.\n" |
| 51 | ; |
| 52 | |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 53 | static compobject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 54 | newcompobject(PyTypeObject *type) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 55 | { |
| 56 | compobject *self; |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 57 | self = PyObject_New(compobject, type); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 58 | if (self == NULL) |
| 59 | return NULL; |
Andrew M. Kuchling | 1c7aaa2 | 1999-01-29 21:49:34 +0000 | [diff] [blame] | 60 | self->is_initialised = 0; |
Andrew M. Kuchling | b95227d | 1999-03-25 21:21:08 +0000 | [diff] [blame] | 61 | self->unused_data = PyString_FromString(""); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 62 | return self; |
| 63 | } |
| 64 | |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 65 | static char compress__doc__[] = |
| 66 | "compress(string) -- Compress string using the default compression level, " |
| 67 | "returning a string containing compressed data.\n" |
| 68 | "compress(string, level) -- Compress string, using the chosen compression " |
| 69 | "level (from 1 to 9). Return a string containing the compressed data.\n" |
| 70 | ; |
| 71 | |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 72 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 73 | PyZlib_compress(PyObject *self, PyObject *args) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 74 | { |
| 75 | PyObject *ReturnVal; |
| 76 | Byte *input, *output; |
| 77 | int length, level=Z_DEFAULT_COMPRESSION, err; |
| 78 | z_stream zst; |
| 79 | |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 80 | if (!PyArg_ParseTuple(args, "s#|i:compress", &input, &length, &level)) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 81 | return NULL; |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 82 | zst.avail_out = length + length/1000 + 12 + 1; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 83 | output=(Byte*)malloc(zst.avail_out); |
| 84 | if (output==NULL) |
| 85 | { |
| 86 | PyErr_SetString(PyExc_MemoryError, |
| 87 | "Can't allocate memory to compress data"); |
| 88 | return NULL; |
| 89 | } |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 90 | |
Jeremy Hylton | 5bc4abe | 1998-12-21 17:15:00 +0000 | [diff] [blame] | 91 | zst.zalloc=(alloc_func)NULL; |
Guido van Rossum | 97b5457 | 1997-06-03 22:21:47 +0000 | [diff] [blame] | 92 | zst.zfree=(free_func)Z_NULL; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 93 | zst.next_out=(Byte *)output; |
| 94 | zst.next_in =(Byte *)input; |
| 95 | zst.avail_in=length; |
| 96 | err=deflateInit(&zst, level); |
| 97 | switch(err) |
| 98 | { |
| 99 | case(Z_OK): |
| 100 | break; |
| 101 | case(Z_MEM_ERROR): |
| 102 | PyErr_SetString(PyExc_MemoryError, |
| 103 | "Out of memory while compressing data"); |
| 104 | free(output); |
| 105 | return NULL; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 106 | case(Z_STREAM_ERROR): |
| 107 | PyErr_SetString(ZlibError, |
| 108 | "Bad compression level"); |
| 109 | free(output); |
| 110 | return NULL; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 111 | default: |
| 112 | { |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 113 | if (zst.msg == Z_NULL) |
| 114 | PyErr_Format(ZlibError, "Error %i while compressing data", |
| 115 | err); |
| 116 | else |
| 117 | PyErr_Format(ZlibError, "Error %i while compressing data: %.200s", |
| 118 | err, zst.msg); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 119 | deflateEnd(&zst); |
| 120 | free(output); |
| 121 | return NULL; |
| 122 | } |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | err=deflate(&zst, Z_FINISH); |
| 126 | switch(err) |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 127 | { |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 128 | case(Z_STREAM_END): |
| 129 | break; |
| 130 | /* Are there other errors to be trapped here? */ |
| 131 | default: |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 132 | { |
| 133 | if (zst.msg == Z_NULL) |
| 134 | PyErr_Format(ZlibError, "Error %i while compressing data", |
| 135 | err); |
| 136 | else |
| 137 | PyErr_Format(ZlibError, "Error %i while compressing data: %.200s", |
| 138 | err, zst.msg); |
| 139 | deflateEnd(&zst); |
| 140 | free(output); |
| 141 | return NULL; |
| 142 | } |
| 143 | } |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 144 | err=deflateEnd(&zst); |
| 145 | if (err!=Z_OK) |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 146 | { |
| 147 | if (zst.msg == Z_NULL) |
| 148 | PyErr_Format(ZlibError, "Error %i while finishing compression", |
| 149 | err); |
| 150 | else |
| 151 | PyErr_Format(ZlibError, |
| 152 | "Error %i while finishing compression: %.200s", |
| 153 | err, zst.msg); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 154 | free(output); |
| 155 | return NULL; |
| 156 | } |
Guido van Rossum | 97b5457 | 1997-06-03 22:21:47 +0000 | [diff] [blame] | 157 | ReturnVal=PyString_FromStringAndSize((char *)output, zst.total_out); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 158 | free(output); |
| 159 | return ReturnVal; |
| 160 | } |
| 161 | |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 162 | static char decompress__doc__[] = |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 163 | "decompress(string) -- Decompress the data in string, returning a string containing the decompressed data.\n" |
| 164 | "decompress(string, wbits) -- Decompress the data in string with a window buffer size of wbits.\n" |
| 165 | "decompress(string, wbits, bufsize) -- Decompress the data in string with a window buffer size of wbits and an initial output buffer size of bufsize.\n" |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 166 | ; |
| 167 | |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 168 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 169 | PyZlib_decompress(PyObject *self, PyObject *args) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 170 | { |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 171 | PyObject *result_str; |
| 172 | Byte *input; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 173 | int length, err; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 174 | int wsize=DEF_WBITS, r_strlen=DEFAULTALLOC; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 175 | z_stream zst; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 176 | if (!PyArg_ParseTuple(args, "s#|ii:decompress", &input, &length, &wsize, &r_strlen)) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 177 | return NULL; |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 178 | |
| 179 | if (r_strlen <= 0) |
| 180 | r_strlen = 1; |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 181 | |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 182 | zst.avail_in=length; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 183 | zst.avail_out=r_strlen; |
| 184 | if (!(result_str = PyString_FromStringAndSize(NULL, r_strlen))) |
| 185 | { |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 186 | PyErr_SetString(PyExc_MemoryError, |
| 187 | "Can't allocate memory to decompress data"); |
| 188 | return NULL; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 189 | } |
Guido van Rossum | 97b5457 | 1997-06-03 22:21:47 +0000 | [diff] [blame] | 190 | zst.zalloc=(alloc_func)NULL; |
| 191 | zst.zfree=(free_func)Z_NULL; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 192 | zst.next_out=(Byte *)PyString_AsString(result_str); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 193 | zst.next_in =(Byte *)input; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 194 | err=inflateInit2(&zst, wsize); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 195 | switch(err) |
| 196 | { |
| 197 | case(Z_OK): |
| 198 | break; |
| 199 | case(Z_MEM_ERROR): |
| 200 | PyErr_SetString(PyExc_MemoryError, |
| 201 | "Out of memory while decompressing data"); |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 202 | Py_DECREF(result_str); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 203 | return NULL; |
| 204 | default: |
| 205 | { |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 206 | if (zst.msg == Z_NULL) |
| 207 | PyErr_Format(ZlibError, "Error %i preparing to decompress data", |
| 208 | err); |
| 209 | else |
| 210 | PyErr_Format(ZlibError, |
| 211 | "Error %i while preparing to decompress data: %.200s", |
| 212 | err, zst.msg); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 213 | inflateEnd(&zst); |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 214 | Py_DECREF(result_str); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 215 | return NULL; |
| 216 | } |
| 217 | } |
| 218 | do |
| 219 | { |
| 220 | err=inflate(&zst, Z_FINISH); |
| 221 | switch(err) |
| 222 | { |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 223 | case(Z_STREAM_END): |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 224 | break; |
Guido van Rossum | 115f517 | 1998-04-23 20:22:11 +0000 | [diff] [blame] | 225 | case(Z_BUF_ERROR): |
Andrew M. Kuchling | d923831 | 2000-10-09 14:18:10 +0000 | [diff] [blame] | 226 | /* |
| 227 | * If there is at least 1 byte of room according to zst.avail_out |
| 228 | * and we get this error, assume that it means zlib cannot |
| 229 | * process the inflate call() due to an error in the data. |
| 230 | */ |
| 231 | if (zst.avail_out > 0) |
| 232 | { |
| 233 | PyErr_Format(ZlibError, "Error %i while decompressing data", |
| 234 | err); |
| 235 | inflateEnd(&zst); |
| 236 | Py_DECREF(result_str); |
| 237 | return NULL; |
| 238 | } |
| 239 | /* fall through */ |
| 240 | case(Z_OK): |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 241 | /* need more memory */ |
| 242 | if (_PyString_Resize(&result_str, r_strlen << 1) == -1) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 243 | { |
| 244 | PyErr_SetString(PyExc_MemoryError, |
| 245 | "Out of memory while decompressing data"); |
| 246 | inflateEnd(&zst); |
| 247 | return NULL; |
| 248 | } |
Guido van Rossum | ed2554a | 1997-08-18 15:31:24 +0000 | [diff] [blame] | 249 | zst.next_out = (unsigned char *)PyString_AsString(result_str) + r_strlen; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 250 | zst.avail_out=r_strlen; |
| 251 | r_strlen = r_strlen << 1; |
| 252 | break; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 253 | default: |
| 254 | { |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 255 | if (zst.msg == Z_NULL) |
| 256 | PyErr_Format(ZlibError, "Error %i while decompressing data", |
| 257 | err); |
| 258 | else |
| 259 | PyErr_Format(ZlibError, |
| 260 | "Error %i while decompressing data: %.200s", |
| 261 | err, zst.msg); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 262 | inflateEnd(&zst); |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 263 | Py_DECREF(result_str); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 264 | return NULL; |
| 265 | } |
| 266 | } |
| 267 | } while(err!=Z_STREAM_END); |
| 268 | |
| 269 | err=inflateEnd(&zst); |
| 270 | if (err!=Z_OK) |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 271 | { |
| 272 | if (zst.msg == Z_NULL) |
| 273 | PyErr_Format(ZlibError, |
| 274 | "Error %i while finishing data decompression", |
| 275 | err); |
| 276 | else |
| 277 | PyErr_Format(ZlibError, |
| 278 | "Error %i while finishing data decompression: %.200s", |
| 279 | err, zst.msg); |
| 280 | Py_DECREF(result_str); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 281 | return NULL; |
| 282 | } |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 283 | _PyString_Resize(&result_str, zst.total_out); |
| 284 | return result_str; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 288 | PyZlib_compressobj(PyObject *selfptr, PyObject *args) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 289 | { |
| 290 | compobject *self; |
| 291 | int level=Z_DEFAULT_COMPRESSION, method=DEFLATED; |
| 292 | int wbits=MAX_WBITS, memLevel=DEF_MEM_LEVEL, strategy=0, err; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 293 | |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 294 | if (!PyArg_ParseTuple(args, "|iiiii:compressobj", &level, &method, &wbits, |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 295 | &memLevel, &strategy)) |
| 296 | return NULL; |
| 297 | |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 298 | self = newcompobject(&Comptype); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 299 | if (self==NULL) return(NULL); |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 300 | self->zst.zalloc = (alloc_func)NULL; |
| 301 | self->zst.zfree = (free_func)Z_NULL; |
| 302 | err = deflateInit2(&self->zst, level, method, wbits, memLevel, strategy); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 303 | switch(err) |
| 304 | { |
| 305 | case (Z_OK): |
Andrew M. Kuchling | 1c7aaa2 | 1999-01-29 21:49:34 +0000 | [diff] [blame] | 306 | self->is_initialised = 1; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 307 | return (PyObject*)self; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 308 | case (Z_MEM_ERROR): |
Andrew M. Kuchling | 1c7aaa2 | 1999-01-29 21:49:34 +0000 | [diff] [blame] | 309 | Py_DECREF(self); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 310 | PyErr_SetString(PyExc_MemoryError, |
| 311 | "Can't allocate memory for compression object"); |
| 312 | return NULL; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 313 | case(Z_STREAM_ERROR): |
Andrew M. Kuchling | 1c7aaa2 | 1999-01-29 21:49:34 +0000 | [diff] [blame] | 314 | Py_DECREF(self); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 315 | PyErr_SetString(PyExc_ValueError, |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 316 | "Invalid initialization option"); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 317 | return NULL; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 318 | default: |
| 319 | { |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 320 | if (self->zst.msg == Z_NULL) |
| 321 | PyErr_Format(ZlibError, |
| 322 | "Error %i while creating compression object", |
| 323 | err); |
| 324 | else |
| 325 | PyErr_Format(ZlibError, |
| 326 | "Error %i while creating compression object: %.200s", |
| 327 | err, self->zst.msg); |
Andrew M. Kuchling | 1c7aaa2 | 1999-01-29 21:49:34 +0000 | [diff] [blame] | 328 | Py_DECREF(self); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 329 | return NULL; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 330 | } |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 335 | PyZlib_decompressobj(PyObject *selfptr, PyObject *args) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 336 | { |
| 337 | int wbits=DEF_WBITS, err; |
| 338 | compobject *self; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 339 | if (!PyArg_ParseTuple(args, "|i:decompressobj", &wbits)) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 340 | { |
| 341 | return NULL; |
| 342 | } |
| 343 | self=newcompobject(&Decomptype); |
| 344 | if (self==NULL) return(NULL); |
Guido van Rossum | 97b5457 | 1997-06-03 22:21:47 +0000 | [diff] [blame] | 345 | self->zst.zalloc=(alloc_func)NULL; |
| 346 | self->zst.zfree=(free_func)Z_NULL; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 347 | err=inflateInit2(&self->zst, wbits); |
| 348 | switch(err) |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 349 | { |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 350 | case (Z_OK): |
Andrew M. Kuchling | 1c7aaa2 | 1999-01-29 21:49:34 +0000 | [diff] [blame] | 351 | self->is_initialised = 1; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 352 | return (PyObject*)self; |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 353 | case(Z_STREAM_ERROR): |
Andrew M. Kuchling | 1c7aaa2 | 1999-01-29 21:49:34 +0000 | [diff] [blame] | 354 | Py_DECREF(self); |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 355 | PyErr_SetString(PyExc_ValueError, |
| 356 | "Invalid initialization option"); |
| 357 | return NULL; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 358 | case (Z_MEM_ERROR): |
Andrew M. Kuchling | 1c7aaa2 | 1999-01-29 21:49:34 +0000 | [diff] [blame] | 359 | Py_DECREF(self); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 360 | PyErr_SetString(PyExc_MemoryError, |
| 361 | "Can't allocate memory for decompression object"); |
| 362 | return NULL; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 363 | default: |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 364 | { |
| 365 | if (self->zst.msg == Z_NULL) |
| 366 | PyErr_Format(ZlibError, |
| 367 | "Error %i while creating decompression object", |
| 368 | err); |
| 369 | else |
| 370 | PyErr_Format(ZlibError, |
| 371 | "Error %i while creating decompression object: %.200s", |
| 372 | err, self->zst.msg); |
Andrew M. Kuchling | 1c7aaa2 | 1999-01-29 21:49:34 +0000 | [diff] [blame] | 373 | Py_DECREF(self); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 374 | return NULL; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 375 | } |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 376 | } |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 377 | } |
| 378 | |
| 379 | static void |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 380 | Comp_dealloc(compobject *self) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 381 | { |
Andrew M. Kuchling | 1c7aaa2 | 1999-01-29 21:49:34 +0000 | [diff] [blame] | 382 | if (self->is_initialised) |
| 383 | deflateEnd(&self->zst); |
Andrew M. Kuchling | b95227d | 1999-03-25 21:21:08 +0000 | [diff] [blame] | 384 | Py_XDECREF(self->unused_data); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 385 | PyObject_Del(self); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | static void |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 389 | Decomp_dealloc(compobject *self) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 390 | { |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 391 | inflateEnd(&self->zst); |
Andrew M. Kuchling | b95227d | 1999-03-25 21:21:08 +0000 | [diff] [blame] | 392 | Py_XDECREF(self->unused_data); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 393 | PyObject_Del(self); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 394 | } |
| 395 | |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 396 | static char comp_compress__doc__[] = |
| 397 | "compress(data) -- Return a string containing a compressed version of the data.\n\n" |
| 398 | "After calling this function, some of the input data may still\n" |
| 399 | "be stored in internal buffers for later processing.\n" |
| 400 | "Call the flush() method to clear these buffers." |
| 401 | ; |
| 402 | |
| 403 | |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 404 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 405 | PyZlib_objcompress(compobject *self, PyObject *args) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 406 | { |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 407 | int err = Z_OK, inplen; |
| 408 | int length = DEFAULTALLOC; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 409 | PyObject *RetVal; |
| 410 | Byte *input; |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 411 | unsigned long start_total_out; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 412 | |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 413 | if (!PyArg_ParseTuple(args, "s#:compress", &input, &inplen)) |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 414 | return NULL; |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 415 | self->zst.avail_in = inplen; |
| 416 | self->zst.next_in = input; |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 417 | if (!(RetVal = PyString_FromStringAndSize(NULL, length))) { |
| 418 | PyErr_SetString(PyExc_MemoryError, |
| 419 | "Can't allocate memory to compress data"); |
| 420 | return NULL; |
| 421 | } |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 422 | start_total_out = self->zst.total_out; |
Guido van Rossum | ed2554a | 1997-08-18 15:31:24 +0000 | [diff] [blame] | 423 | self->zst.next_out = (unsigned char *)PyString_AsString(RetVal); |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 424 | self->zst.avail_out = length; |
| 425 | while (self->zst.avail_in != 0 && err == Z_OK) |
| 426 | { |
| 427 | err = deflate(&(self->zst), Z_NO_FLUSH); |
| 428 | if (self->zst.avail_out <= 0) { |
| 429 | if (_PyString_Resize(&RetVal, length << 1) == -1) { |
| 430 | PyErr_SetString(PyExc_MemoryError, |
| 431 | "Can't allocate memory to compress data"); |
| 432 | return NULL; |
| 433 | } |
Guido van Rossum | ed2554a | 1997-08-18 15:31:24 +0000 | [diff] [blame] | 434 | self->zst.next_out = (unsigned char *)PyString_AsString(RetVal) + length; |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 435 | self->zst.avail_out = length; |
| 436 | length = length << 1; |
| 437 | } |
| 438 | } |
| 439 | if (err != Z_OK) |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 440 | { |
| 441 | if (self->zst.msg == Z_NULL) |
| 442 | PyErr_Format(ZlibError, "Error %i while compressing", |
| 443 | err); |
| 444 | else |
| 445 | PyErr_Format(ZlibError, "Error %i while compressing: %.200s", |
| 446 | err, self->zst.msg); |
| 447 | Py_DECREF(RetVal); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 448 | return NULL; |
| 449 | } |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 450 | _PyString_Resize(&RetVal, self->zst.total_out - start_total_out); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 451 | return RetVal; |
| 452 | } |
| 453 | |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 454 | static char decomp_decompress__doc__[] = |
| 455 | "decompress(data) -- Return a string containing the decompressed version of the data.\n\n" |
| 456 | "After calling this function, some of the input data may still\n" |
| 457 | "be stored in internal buffers for later processing.\n" |
| 458 | "Call the flush() method to clear these buffers." |
| 459 | ; |
| 460 | |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 461 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 462 | PyZlib_objdecompress(compobject *self, PyObject *args) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 463 | { |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 464 | int length, err, inplen; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 465 | PyObject *RetVal; |
| 466 | Byte *input; |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 467 | unsigned long start_total_out; |
| 468 | |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 469 | if (!PyArg_ParseTuple(args, "s#:decompress", &input, &inplen)) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 470 | return NULL; |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 471 | start_total_out = self->zst.total_out; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 472 | RetVal = PyString_FromStringAndSize(NULL, DEFAULTALLOC); |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 473 | self->zst.avail_in = inplen; |
| 474 | self->zst.next_in = input; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 475 | self->zst.avail_out = length = DEFAULTALLOC; |
Guido van Rossum | ed2554a | 1997-08-18 15:31:24 +0000 | [diff] [blame] | 476 | self->zst.next_out = (unsigned char *)PyString_AsString(RetVal); |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 477 | err = Z_OK; |
Jeremy Hylton | a74ef66 | 1997-08-13 21:39:18 +0000 | [diff] [blame] | 478 | |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 479 | while (self->zst.avail_in != 0 && err == Z_OK) |
| 480 | { |
| 481 | err = inflate(&(self->zst), Z_NO_FLUSH); |
| 482 | if (err == Z_OK && self->zst.avail_out <= 0) |
| 483 | { |
| 484 | if (_PyString_Resize(&RetVal, length << 1) == -1) |
| 485 | { |
| 486 | PyErr_SetString(PyExc_MemoryError, |
| 487 | "Can't allocate memory to compress data"); |
| 488 | return NULL; |
| 489 | } |
Guido van Rossum | ed2554a | 1997-08-18 15:31:24 +0000 | [diff] [blame] | 490 | self->zst.next_out = (unsigned char *)PyString_AsString(RetVal) + length; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 491 | self->zst.avail_out = length; |
| 492 | length = length << 1; |
| 493 | } |
| 494 | } |
| 495 | |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 496 | if (err != Z_OK && err != Z_STREAM_END) |
| 497 | { |
| 498 | if (self->zst.msg == Z_NULL) |
| 499 | PyErr_Format(ZlibError, "Error %i while decompressing", |
| 500 | err); |
| 501 | else |
| 502 | PyErr_Format(ZlibError, "Error %i while decompressing: %.200s", |
| 503 | err, self->zst.msg); |
| 504 | Py_DECREF(RetVal); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 505 | return NULL; |
| 506 | } |
Andrew M. Kuchling | b95227d | 1999-03-25 21:21:08 +0000 | [diff] [blame] | 507 | |
| 508 | if (err == Z_STREAM_END) |
| 509 | { |
| 510 | /* The end of the compressed data has been reached, so set |
| 511 | the unused_data attribute to a string containing the |
| 512 | remainder of the data in the string. */ |
| 513 | int pos = self->zst.next_in - input; /* Position in the string */ |
| 514 | Py_XDECREF(self->unused_data); /* Free the original, empty string */ |
| 515 | |
Guido van Rossum | aee9bb2 | 1999-04-12 14:35:48 +0000 | [diff] [blame] | 516 | self->unused_data = PyString_FromStringAndSize((char *)input+pos, |
| 517 | inplen-pos); |
Andrew M. Kuchling | b95227d | 1999-03-25 21:21:08 +0000 | [diff] [blame] | 518 | if (self->unused_data == NULL) return NULL; |
| 519 | } |
| 520 | |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 521 | _PyString_Resize(&RetVal, self->zst.total_out - start_total_out); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 522 | return RetVal; |
| 523 | } |
| 524 | |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 525 | static char comp_flush__doc__[] = |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 526 | "flush( [mode] ) -- Return a string containing any remaining compressed data.\n" |
| 527 | "mode can be one of the constants Z_SYNC_FLUSH, Z_FULL_FLUSH, Z_FINISH; the \n" |
| 528 | "default value used when mode is not specified is Z_FINISH.\n" |
| 529 | "If mode == Z_FINISH, the compressor object can no longer be used after\n" |
| 530 | "calling the flush() method. Otherwise, more data can still be compressed.\n" |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 531 | ; |
| 532 | |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 533 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 534 | PyZlib_flush(compobject *self, PyObject *args) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 535 | { |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 536 | int length=DEFAULTALLOC, err = Z_OK; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 537 | PyObject *RetVal; |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 538 | int flushmode = Z_FINISH; |
| 539 | unsigned long start_total_out; |
| 540 | |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 541 | if (!PyArg_ParseTuple(args, "|i:flush", &flushmode)) |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 542 | return NULL; |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 543 | |
| 544 | /* Flushing with Z_NO_FLUSH is a no-op, so there's no point in |
| 545 | doing any work at all; just return an empty string. */ |
| 546 | if (flushmode == Z_NO_FLUSH) |
| 547 | { |
| 548 | return PyString_FromStringAndSize(NULL, 0); |
| 549 | } |
| 550 | |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 551 | self->zst.avail_in = 0; |
| 552 | self->zst.next_in = Z_NULL; |
| 553 | if (!(RetVal = PyString_FromStringAndSize(NULL, length))) { |
| 554 | PyErr_SetString(PyExc_MemoryError, |
| 555 | "Can't allocate memory to compress data"); |
| 556 | return NULL; |
| 557 | } |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 558 | start_total_out = self->zst.total_out; |
Guido van Rossum | ed2554a | 1997-08-18 15:31:24 +0000 | [diff] [blame] | 559 | self->zst.next_out = (unsigned char *)PyString_AsString(RetVal); |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 560 | self->zst.avail_out = length; |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 561 | |
| 562 | /* When flushing the zstream, there's no input data. |
| 563 | If zst.avail_out == 0, that means that more output space is |
| 564 | needed to complete the flush operation. */ |
Andrew M. Kuchling | 173156f | 1999-03-22 19:25:30 +0000 | [diff] [blame] | 565 | while (1) { |
| 566 | err = deflate(&(self->zst), flushmode); |
| 567 | |
| 568 | /* If the output is Z_OK, and there's still room in the output |
| 569 | buffer, then the flush is complete. */ |
| 570 | if ( (err == Z_OK) && self->zst.avail_out > 0) break; |
| 571 | |
| 572 | /* A nonzero return indicates some sort of error (but see |
| 573 | the comment for the error handler below) */ |
| 574 | if ( err != Z_OK ) break; |
| 575 | |
| 576 | /* There's no space left for output, so increase the buffer and loop |
| 577 | again */ |
| 578 | if (_PyString_Resize(&RetVal, length << 1) == -1) { |
| 579 | PyErr_SetString(PyExc_MemoryError, |
| 580 | "Can't allocate memory to compress data"); |
| 581 | return NULL; |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 582 | } |
Andrew M. Kuchling | 173156f | 1999-03-22 19:25:30 +0000 | [diff] [blame] | 583 | self->zst.next_out = (unsigned char *)PyString_AsString(RetVal) + length; |
| 584 | self->zst.avail_out = length; |
| 585 | length = length << 1; |
Jeremy Hylton | 6892aa3 | 1999-01-06 22:56:24 +0000 | [diff] [blame] | 586 | } |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 587 | |
Andrew M. Kuchling | 173156f | 1999-03-22 19:25:30 +0000 | [diff] [blame] | 588 | /* Raise an exception indicating an error. The condition for |
| 589 | detecting a error is kind of complicated; Z_OK indicates no |
| 590 | error, but if the flushmode is Z_FINISH, then Z_STREAM_END is |
| 591 | also not an error. */ |
| 592 | if (err!=Z_OK && !(flushmode == Z_FINISH && err == Z_STREAM_END) ) |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 593 | { |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 594 | if (self->zst.msg == Z_NULL) |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 595 | PyErr_Format(ZlibError, "Error %i while flushing", |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 596 | err); |
| 597 | else |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 598 | PyErr_Format(ZlibError, "Error %i while flushing: %.200s", |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 599 | err, self->zst.msg); |
| 600 | Py_DECREF(RetVal); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 601 | return NULL; |
Jeremy Hylton | 6892aa3 | 1999-01-06 22:56:24 +0000 | [diff] [blame] | 602 | } |
Andrew M. Kuchling | 173156f | 1999-03-22 19:25:30 +0000 | [diff] [blame] | 603 | |
| 604 | /* If flushmode is Z_FINISH, we also have to call deflateEnd() to |
| 605 | free various data structures */ |
| 606 | |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 607 | if (flushmode == Z_FINISH) { |
| 608 | err=deflateEnd(&(self->zst)); |
| 609 | if (err!=Z_OK) { |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 610 | if (self->zst.msg == Z_NULL) |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 611 | PyErr_Format(ZlibError, "Error %i from deflateEnd()", |
| 612 | err); |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 613 | else |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 614 | PyErr_Format(ZlibError, |
| 615 | "Error %i from deflateEnd(): %.200s", |
| 616 | err, self->zst.msg); |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 617 | Py_DECREF(RetVal); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 618 | return NULL; |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 619 | } |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 620 | } |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 621 | _PyString_Resize(&RetVal, self->zst.total_out - start_total_out); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 622 | return RetVal; |
| 623 | } |
| 624 | |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 625 | static char decomp_flush__doc__[] = |
| 626 | "flush() -- Return a string containing any remaining decompressed data. " |
| 627 | "The decompressor object can no longer be used after this call." |
| 628 | ; |
| 629 | |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 630 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 631 | PyZlib_unflush(compobject *self, PyObject *args) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 632 | { |
| 633 | int length=0, err; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 634 | PyObject *RetVal; |
| 635 | |
Andrew M. Kuchling | 14f5158 | 2000-08-03 02:04:05 +0000 | [diff] [blame] | 636 | if (!PyArg_ParseTuple(args, "")) |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 637 | return NULL; |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 638 | if (!(RetVal = PyString_FromStringAndSize(NULL, DEFAULTALLOC))) |
| 639 | { |
| 640 | PyErr_SetString(PyExc_MemoryError, |
| 641 | "Can't allocate memory to decompress data"); |
| 642 | return NULL; |
| 643 | } |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 644 | self->zst.avail_in=0; |
Guido van Rossum | ed2554a | 1997-08-18 15:31:24 +0000 | [diff] [blame] | 645 | self->zst.next_out = (unsigned char *)PyString_AsString(RetVal); |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 646 | length = self->zst.avail_out = DEFAULTALLOC; |
| 647 | |
Guido van Rossum | b729a1d | 1999-04-07 20:23:17 +0000 | [diff] [blame] | 648 | /* I suspect that Z_BUF_ERROR is the only error code we need to check for |
| 649 | in the following loop, but will leave the Z_OK in for now to avoid |
| 650 | destabilizing this function. --amk */ |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 651 | err = Z_OK; |
Guido van Rossum | b729a1d | 1999-04-07 20:23:17 +0000 | [diff] [blame] | 652 | while ( err == Z_OK ) |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 653 | { |
| 654 | err = inflate(&(self->zst), Z_FINISH); |
Guido van Rossum | b729a1d | 1999-04-07 20:23:17 +0000 | [diff] [blame] | 655 | if ( ( err == Z_OK || err == Z_BUF_ERROR ) && self->zst.avail_out == 0) |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 656 | { |
| 657 | if (_PyString_Resize(&RetVal, length << 1) == -1) |
| 658 | { |
| 659 | PyErr_SetString(PyExc_MemoryError, |
| 660 | "Can't allocate memory to decompress data"); |
| 661 | return NULL; |
| 662 | } |
Guido van Rossum | ed2554a | 1997-08-18 15:31:24 +0000 | [diff] [blame] | 663 | self->zst.next_out = (unsigned char *)PyString_AsString(RetVal) + length; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 664 | self->zst.avail_out = length; |
| 665 | length = length << 1; |
Guido van Rossum | b729a1d | 1999-04-07 20:23:17 +0000 | [diff] [blame] | 666 | err = Z_OK; |
Jeremy Hylton | 41b9f00 | 1997-08-13 23:19:55 +0000 | [diff] [blame] | 667 | } |
| 668 | } |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 669 | if (err!=Z_STREAM_END) |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 670 | { |
| 671 | if (self->zst.msg == Z_NULL) |
| 672 | PyErr_Format(ZlibError, "Error %i while decompressing", |
| 673 | err); |
| 674 | else |
| 675 | PyErr_Format(ZlibError, "Error %i while decompressing: %.200s", |
| 676 | err, self->zst.msg); |
| 677 | Py_DECREF(RetVal); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 678 | return NULL; |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 679 | } |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 680 | err=inflateEnd(&(self->zst)); |
| 681 | if (err!=Z_OK) |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 682 | { |
| 683 | if (self->zst.msg == Z_NULL) |
| 684 | PyErr_Format(ZlibError, |
| 685 | "Error %i while flushing decompression object", |
| 686 | err); |
| 687 | else |
| 688 | PyErr_Format(ZlibError, |
| 689 | "Error %i while flushing decompression object: %.200s", |
| 690 | err, self->zst.msg); |
| 691 | Py_DECREF(RetVal); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 692 | return NULL; |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 693 | } |
Jeremy Hylton | 644c17d | 1997-08-14 21:06:42 +0000 | [diff] [blame] | 694 | _PyString_Resize(&RetVal, |
| 695 | (char *)self->zst.next_out - PyString_AsString(RetVal)); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 696 | return RetVal; |
| 697 | } |
| 698 | |
| 699 | static PyMethodDef comp_methods[] = |
| 700 | { |
Andrew M. Kuchling | 14f5158 | 2000-08-03 02:04:05 +0000 | [diff] [blame] | 701 | {"compress", (binaryfunc)PyZlib_objcompress, |
| 702 | METH_VARARGS, comp_compress__doc__}, |
| 703 | {"flush", (binaryfunc)PyZlib_flush, |
| 704 | METH_VARARGS, comp_flush__doc__}, |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 705 | {NULL, NULL} |
| 706 | }; |
| 707 | |
| 708 | static PyMethodDef Decomp_methods[] = |
| 709 | { |
Andrew M. Kuchling | 14f5158 | 2000-08-03 02:04:05 +0000 | [diff] [blame] | 710 | {"decompress", (binaryfunc)PyZlib_objdecompress, |
| 711 | METH_VARARGS, decomp_decompress__doc__}, |
| 712 | {"flush", (binaryfunc)PyZlib_unflush, |
| 713 | METH_VARARGS, decomp_flush__doc__}, |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 714 | {NULL, NULL} |
| 715 | }; |
| 716 | |
| 717 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 718 | Comp_getattr(compobject *self, char *name) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 719 | { |
| 720 | return Py_FindMethod(comp_methods, (PyObject *)self, name); |
| 721 | } |
| 722 | |
| 723 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 724 | Decomp_getattr(compobject *self, char *name) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 725 | { |
Andrew M. Kuchling | b95227d | 1999-03-25 21:21:08 +0000 | [diff] [blame] | 726 | if (strcmp(name, "unused_data") == 0) |
| 727 | { |
| 728 | Py_INCREF(self->unused_data); |
| 729 | return self->unused_data; |
| 730 | } |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 731 | return Py_FindMethod(Decomp_methods, (PyObject *)self, name); |
| 732 | } |
| 733 | |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 734 | static char adler32__doc__[] = |
| 735 | "adler32(string) -- Compute an Adler-32 checksum of string, using " |
| 736 | "a default starting value, and returning an integer value.\n" |
| 737 | "adler32(string, value) -- Compute an Adler-32 checksum of string, using " |
| 738 | "the starting value provided, and returning an integer value\n" |
| 739 | ; |
| 740 | |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 741 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 742 | PyZlib_adler32(PyObject *self, PyObject *args) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 743 | { |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 744 | uLong adler32val=adler32(0L, Z_NULL, 0); |
| 745 | Byte *buf; |
| 746 | int len; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 747 | |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 748 | if (!PyArg_ParseTuple(args, "s#|l:adler32", &buf, &len, &adler32val)) |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 749 | { |
| 750 | return NULL; |
| 751 | } |
| 752 | adler32val = adler32(adler32val, buf, len); |
| 753 | return PyInt_FromLong(adler32val); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 754 | } |
| 755 | |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 756 | static char crc32__doc__[] = |
| 757 | "crc32(string) -- Compute a CRC-32 checksum of string, using " |
| 758 | "a default starting value, and returning an integer value.\n" |
| 759 | "crc32(string, value) -- Compute a CRC-32 checksum of string, using " |
| 760 | "the starting value provided, and returning an integer value.\n" |
| 761 | ; |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 762 | |
| 763 | static PyObject * |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 764 | PyZlib_crc32(PyObject *self, PyObject *args) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 765 | { |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 766 | uLong crc32val=crc32(0L, Z_NULL, 0); |
| 767 | Byte *buf; |
| 768 | int len; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 769 | if (!PyArg_ParseTuple(args, "s#|l:crc32", &buf, &len, &crc32val)) |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 770 | { |
| 771 | return NULL; |
| 772 | } |
| 773 | crc32val = crc32(crc32val, buf, len); |
| 774 | return PyInt_FromLong(crc32val); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 775 | } |
| 776 | |
| 777 | |
| 778 | static PyMethodDef zlib_methods[] = |
| 779 | { |
Andrew M. Kuchling | 14f5158 | 2000-08-03 02:04:05 +0000 | [diff] [blame] | 780 | {"adler32", (PyCFunction)PyZlib_adler32, |
| 781 | METH_VARARGS, adler32__doc__}, |
| 782 | {"compress", (PyCFunction)PyZlib_compress, |
| 783 | METH_VARARGS, compress__doc__}, |
| 784 | {"compressobj", (PyCFunction)PyZlib_compressobj, |
| 785 | METH_VARARGS, compressobj__doc__}, |
| 786 | {"crc32", (PyCFunction)PyZlib_crc32, |
| 787 | METH_VARARGS, crc32__doc__}, |
| 788 | {"decompress", (PyCFunction)PyZlib_decompress, |
| 789 | METH_VARARGS, decompress__doc__}, |
| 790 | {"decompressobj", (PyCFunction)PyZlib_decompressobj, |
| 791 | METH_VARARGS, decompressobj__doc__}, |
| 792 | {NULL, NULL} |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 793 | }; |
| 794 | |
| 795 | statichere PyTypeObject Comptype = { |
Guido van Rossum | 9ec0f8b | 1997-12-18 05:21:29 +0000 | [diff] [blame] | 796 | PyObject_HEAD_INIT(0) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 797 | 0, |
| 798 | "Compress", |
| 799 | sizeof(compobject), |
| 800 | 0, |
| 801 | (destructor)Comp_dealloc, /*tp_dealloc*/ |
| 802 | 0, /*tp_print*/ |
| 803 | (getattrfunc)Comp_getattr, /*tp_getattr*/ |
| 804 | 0, /*tp_setattr*/ |
| 805 | 0, /*tp_compare*/ |
| 806 | 0, /*tp_repr*/ |
| 807 | 0, /*tp_as_number*/ |
| 808 | 0, /*tp_as_sequence*/ |
| 809 | 0, /*tp_as_mapping*/ |
| 810 | }; |
| 811 | |
| 812 | statichere PyTypeObject Decomptype = { |
Guido van Rossum | 9ec0f8b | 1997-12-18 05:21:29 +0000 | [diff] [blame] | 813 | PyObject_HEAD_INIT(0) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 814 | 0, |
| 815 | "Decompress", |
| 816 | sizeof(compobject), |
| 817 | 0, |
| 818 | (destructor)Decomp_dealloc, /*tp_dealloc*/ |
| 819 | 0, /*tp_print*/ |
| 820 | (getattrfunc)Decomp_getattr, /*tp_getattr*/ |
| 821 | 0, /*tp_setattr*/ |
| 822 | 0, /*tp_compare*/ |
| 823 | 0, /*tp_repr*/ |
| 824 | 0, /*tp_as_number*/ |
| 825 | 0, /*tp_as_sequence*/ |
| 826 | 0, /*tp_as_mapping*/ |
| 827 | }; |
| 828 | |
| 829 | /* The following insint() routine was blatantly ripped off from |
| 830 | socketmodule.c */ |
| 831 | |
| 832 | /* Convenience routine to export an integer value. |
| 833 | For simplicity, errors (which are unlikely anyway) are ignored. */ |
| 834 | static void |
Peter Schneider-Kamp | a788a7f | 2000-07-10 09:57:19 +0000 | [diff] [blame] | 835 | insint(PyObject *d, char *name, int value) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 836 | { |
| 837 | PyObject *v = PyInt_FromLong((long) value); |
| 838 | if (v == NULL) { |
| 839 | /* Don't bother reporting this error */ |
| 840 | PyErr_Clear(); |
| 841 | } |
| 842 | else { |
| 843 | PyDict_SetItemString(d, name, v); |
| 844 | Py_DECREF(v); |
| 845 | } |
| 846 | } |
| 847 | |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 848 | static char zlib_module_documentation[]= |
| 849 | "The functions in this module allow compression and decompression " |
| 850 | "using the zlib library, which is based on GNU zip. \n\n" |
| 851 | "adler32(string) -- Compute an Adler-32 checksum.\n" |
| 852 | "adler32(string, start) -- Compute an Adler-32 checksum using a given starting value.\n" |
| 853 | "compress(string) -- Compress a string.\n" |
| 854 | "compress(string, level) -- Compress a string with the given level of compression (1--9).\n" |
| 855 | "compressobj([level]) -- Return a compressor object.\n" |
| 856 | "crc32(string) -- Compute a CRC-32 checksum.\n" |
| 857 | "crc32(string, start) -- Compute a CRC-32 checksum using a given starting value.\n" |
Andrew M. Kuchling | 313a3e3 | 1999-12-20 22:13:38 +0000 | [diff] [blame] | 858 | "decompress(string,[wbits],[bufsize]) -- Decompresses a compressed string.\n" |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 859 | "decompressobj([wbits]) -- Return a decompressor object (wbits=window buffer size).\n\n" |
| 860 | "Compressor objects support compress() and flush() methods; decompressor \n" |
| 861 | "objects support decompress() and flush()." |
| 862 | ; |
| 863 | |
Guido van Rossum | 3886bb6 | 1998-12-04 18:50:17 +0000 | [diff] [blame] | 864 | DL_EXPORT(void) |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 865 | PyInit_zlib(void) |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 866 | { |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 867 | PyObject *m, *d, *ver; |
Guido van Rossum | 9ec0f8b | 1997-12-18 05:21:29 +0000 | [diff] [blame] | 868 | Comptype.ob_type = &PyType_Type; |
| 869 | Decomptype.ob_type = &PyType_Type; |
Guido van Rossum | 3c54030 | 1997-06-03 22:21:03 +0000 | [diff] [blame] | 870 | m = Py_InitModule4("zlib", zlib_methods, |
| 871 | zlib_module_documentation, |
| 872 | (PyObject*)NULL,PYTHON_API_VERSION); |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 873 | d = PyModule_GetDict(m); |
Guido van Rossum | 0cb96de | 1997-10-01 04:29:29 +0000 | [diff] [blame] | 874 | ZlibError = PyErr_NewException("zlib.error", NULL, NULL); |
Fred Drake | 8972dfd | 1999-12-22 16:13:54 +0000 | [diff] [blame] | 875 | if (ZlibError != NULL) |
| 876 | PyDict_SetItemString(d, "error", ZlibError); |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 877 | |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 878 | insint(d, "MAX_WBITS", MAX_WBITS); |
| 879 | insint(d, "DEFLATED", DEFLATED); |
| 880 | insint(d, "DEF_MEM_LEVEL", DEF_MEM_LEVEL); |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 881 | insint(d, "Z_BEST_SPEED", Z_BEST_SPEED); |
| 882 | insint(d, "Z_BEST_COMPRESSION", Z_BEST_COMPRESSION); |
| 883 | insint(d, "Z_DEFAULT_COMPRESSION", Z_DEFAULT_COMPRESSION); |
| 884 | insint(d, "Z_FILTERED", Z_FILTERED); |
| 885 | insint(d, "Z_HUFFMAN_ONLY", Z_HUFFMAN_ONLY); |
| 886 | insint(d, "Z_DEFAULT_STRATEGY", Z_DEFAULT_STRATEGY); |
Jeremy Hylton | a37e244 | 1998-12-18 22:13:11 +0000 | [diff] [blame] | 887 | |
| 888 | insint(d, "Z_FINISH", Z_FINISH); |
| 889 | insint(d, "Z_NO_FLUSH", Z_NO_FLUSH); |
| 890 | insint(d, "Z_SYNC_FLUSH", Z_SYNC_FLUSH); |
| 891 | insint(d, "Z_FULL_FLUSH", Z_FULL_FLUSH); |
| 892 | |
Jeremy Hylton | cb91404 | 1997-09-04 23:39:23 +0000 | [diff] [blame] | 893 | ver = PyString_FromString(ZLIB_VERSION); |
Fred Drake | 8972dfd | 1999-12-22 16:13:54 +0000 | [diff] [blame] | 894 | if (ver != NULL) { |
| 895 | PyDict_SetItemString(d, "ZLIB_VERSION", ver); |
| 896 | Py_DECREF(ver); |
| 897 | } |
Guido van Rossum | fb22156 | 1997-04-29 15:38:09 +0000 | [diff] [blame] | 898 | } |