Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1 | /* |
| 2 | An implementation of Buffered I/O as defined by PEP 3116 - "New I/O" |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 3 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 4 | Classes defined here: BufferedIOBase, BufferedReader, BufferedWriter, |
| 5 | BufferedRandom. |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 6 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 7 | Written by Amaury Forgeot d'Arc and Antoine Pitrou |
| 8 | */ |
| 9 | |
| 10 | #define PY_SSIZE_T_CLEAN |
| 11 | #include "Python.h" |
| 12 | #include "structmember.h" |
| 13 | #include "pythread.h" |
| 14 | #include "_iomodule.h" |
| 15 | |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 16 | _Py_IDENTIFIER(close); |
| 17 | _Py_IDENTIFIER(_dealloc_warn); |
| 18 | _Py_IDENTIFIER(flush); |
| 19 | _Py_IDENTIFIER(isatty); |
Martin v. Löwis | 767046a | 2011-10-14 15:35:36 +0200 | [diff] [blame] | 20 | _Py_IDENTIFIER(mode); |
| 21 | _Py_IDENTIFIER(name); |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 22 | _Py_IDENTIFIER(peek); |
| 23 | _Py_IDENTIFIER(read); |
| 24 | _Py_IDENTIFIER(read1); |
| 25 | _Py_IDENTIFIER(readable); |
| 26 | _Py_IDENTIFIER(readinto); |
| 27 | _Py_IDENTIFIER(writable); |
| 28 | _Py_IDENTIFIER(write); |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 29 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 30 | /* |
| 31 | * BufferedIOBase class, inherits from IOBase. |
| 32 | */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 33 | PyDoc_STRVAR(bufferediobase_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 34 | "Base class for buffered IO objects.\n" |
| 35 | "\n" |
| 36 | "The main difference with RawIOBase is that the read() method\n" |
| 37 | "supports omitting the size argument, and does not have a default\n" |
| 38 | "implementation that defers to readinto().\n" |
| 39 | "\n" |
| 40 | "In addition, read(), readinto() and write() may raise\n" |
| 41 | "BlockingIOError if the underlying raw stream is in non-blocking\n" |
| 42 | "mode and not ready; unlike their raw counterparts, they will never\n" |
| 43 | "return None.\n" |
| 44 | "\n" |
| 45 | "A typical implementation should not inherit from a RawIOBase\n" |
| 46 | "implementation, but wrap one.\n" |
| 47 | ); |
| 48 | |
| 49 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 50 | bufferediobase_readinto(PyObject *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 51 | { |
| 52 | Py_buffer buf; |
| 53 | Py_ssize_t len; |
| 54 | PyObject *data; |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 55 | _Py_IDENTIFIER(read); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 56 | |
| 57 | if (!PyArg_ParseTuple(args, "w*:readinto", &buf)) { |
| 58 | return NULL; |
| 59 | } |
| 60 | |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 61 | data = _PyObject_CallMethodId(self, &PyId_read, "n", buf.len); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 62 | if (data == NULL) |
| 63 | goto error; |
| 64 | |
| 65 | if (!PyBytes_Check(data)) { |
| 66 | Py_DECREF(data); |
| 67 | PyErr_SetString(PyExc_TypeError, "read() should return bytes"); |
| 68 | goto error; |
| 69 | } |
| 70 | |
| 71 | len = Py_SIZE(data); |
Serhiy Storchaka | 37a79a1 | 2013-05-28 16:24:45 +0300 | [diff] [blame] | 72 | if (len > buf.len) { |
| 73 | PyErr_Format(PyExc_ValueError, |
| 74 | "read() returned too much data: " |
| 75 | "%zd bytes requested, %zd returned", |
| 76 | buf.len, len); |
| 77 | Py_DECREF(data); |
| 78 | goto error; |
| 79 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 80 | memcpy(buf.buf, PyBytes_AS_STRING(data), len); |
| 81 | |
| 82 | PyBuffer_Release(&buf); |
| 83 | Py_DECREF(data); |
| 84 | |
| 85 | return PyLong_FromSsize_t(len); |
| 86 | |
| 87 | error: |
| 88 | PyBuffer_Release(&buf); |
| 89 | return NULL; |
| 90 | } |
| 91 | |
| 92 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 93 | bufferediobase_unsupported(const char *message) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 94 | { |
| 95 | PyErr_SetString(IO_STATE->unsupported_operation, message); |
| 96 | return NULL; |
| 97 | } |
| 98 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 99 | PyDoc_STRVAR(bufferediobase_detach_doc, |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 100 | "Disconnect this buffer from its underlying raw stream and return it.\n" |
| 101 | "\n" |
| 102 | "After the raw stream has been detached, the buffer is in an unusable\n" |
| 103 | "state.\n"); |
| 104 | |
| 105 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 106 | bufferediobase_detach(PyObject *self) |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 107 | { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 108 | return bufferediobase_unsupported("detach"); |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 109 | } |
| 110 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 111 | PyDoc_STRVAR(bufferediobase_read_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 112 | "Read and return up to n bytes.\n" |
| 113 | "\n" |
| 114 | "If the argument is omitted, None, or negative, reads and\n" |
| 115 | "returns all data until EOF.\n" |
| 116 | "\n" |
| 117 | "If the argument is positive, and the underlying raw stream is\n" |
| 118 | "not 'interactive', multiple raw reads may be issued to satisfy\n" |
| 119 | "the byte count (unless EOF is reached first). But for\n" |
| 120 | "interactive raw streams (as well as sockets and pipes), at most\n" |
| 121 | "one raw read will be issued, and a short result does not imply\n" |
| 122 | "that EOF is imminent.\n" |
| 123 | "\n" |
| 124 | "Returns an empty bytes object on EOF.\n" |
| 125 | "\n" |
| 126 | "Returns None if the underlying raw stream was open in non-blocking\n" |
| 127 | "mode and no data is available at the moment.\n"); |
| 128 | |
| 129 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 130 | bufferediobase_read(PyObject *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 131 | { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 132 | return bufferediobase_unsupported("read"); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 133 | } |
| 134 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 135 | PyDoc_STRVAR(bufferediobase_read1_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 136 | "Read and return up to n bytes, with at most one read() call\n" |
| 137 | "to the underlying raw stream. A short result does not imply\n" |
| 138 | "that EOF is imminent.\n" |
| 139 | "\n" |
| 140 | "Returns an empty bytes object on EOF.\n"); |
| 141 | |
| 142 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 143 | bufferediobase_read1(PyObject *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 144 | { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 145 | return bufferediobase_unsupported("read1"); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 146 | } |
| 147 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 148 | PyDoc_STRVAR(bufferediobase_write_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 149 | "Write the given buffer to the IO stream.\n" |
| 150 | "\n" |
| 151 | "Returns the number of bytes written, which is never less than\n" |
| 152 | "len(b).\n" |
| 153 | "\n" |
| 154 | "Raises BlockingIOError if the buffer is full and the\n" |
| 155 | "underlying raw stream cannot accept more data at the moment.\n"); |
| 156 | |
| 157 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 158 | bufferediobase_write(PyObject *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 159 | { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 160 | return bufferediobase_unsupported("write"); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 164 | static PyMethodDef bufferediobase_methods[] = { |
| 165 | {"detach", (PyCFunction)bufferediobase_detach, METH_NOARGS, bufferediobase_detach_doc}, |
| 166 | {"read", bufferediobase_read, METH_VARARGS, bufferediobase_read_doc}, |
| 167 | {"read1", bufferediobase_read1, METH_VARARGS, bufferediobase_read1_doc}, |
| 168 | {"readinto", bufferediobase_readinto, METH_VARARGS, NULL}, |
| 169 | {"write", bufferediobase_write, METH_VARARGS, bufferediobase_write_doc}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 170 | {NULL, NULL} |
| 171 | }; |
| 172 | |
| 173 | PyTypeObject PyBufferedIOBase_Type = { |
| 174 | PyVarObject_HEAD_INIT(NULL, 0) |
| 175 | "_io._BufferedIOBase", /*tp_name*/ |
| 176 | 0, /*tp_basicsize*/ |
| 177 | 0, /*tp_itemsize*/ |
| 178 | 0, /*tp_dealloc*/ |
| 179 | 0, /*tp_print*/ |
| 180 | 0, /*tp_getattr*/ |
| 181 | 0, /*tp_setattr*/ |
| 182 | 0, /*tp_compare */ |
| 183 | 0, /*tp_repr*/ |
| 184 | 0, /*tp_as_number*/ |
| 185 | 0, /*tp_as_sequence*/ |
| 186 | 0, /*tp_as_mapping*/ |
| 187 | 0, /*tp_hash */ |
| 188 | 0, /*tp_call*/ |
| 189 | 0, /*tp_str*/ |
| 190 | 0, /*tp_getattro*/ |
| 191 | 0, /*tp_setattro*/ |
| 192 | 0, /*tp_as_buffer*/ |
| 193 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 194 | bufferediobase_doc, /* tp_doc */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 195 | 0, /* tp_traverse */ |
| 196 | 0, /* tp_clear */ |
| 197 | 0, /* tp_richcompare */ |
| 198 | 0, /* tp_weaklistoffset */ |
| 199 | 0, /* tp_iter */ |
| 200 | 0, /* tp_iternext */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 201 | bufferediobase_methods, /* tp_methods */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 202 | 0, /* tp_members */ |
| 203 | 0, /* tp_getset */ |
| 204 | &PyIOBase_Type, /* tp_base */ |
| 205 | 0, /* tp_dict */ |
| 206 | 0, /* tp_descr_get */ |
| 207 | 0, /* tp_descr_set */ |
| 208 | 0, /* tp_dictoffset */ |
| 209 | 0, /* tp_init */ |
| 210 | 0, /* tp_alloc */ |
| 211 | 0, /* tp_new */ |
| 212 | }; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 213 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 214 | |
| 215 | typedef struct { |
| 216 | PyObject_HEAD |
| 217 | |
| 218 | PyObject *raw; |
| 219 | int ok; /* Initialized? */ |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 220 | int detached; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 221 | int readable; |
| 222 | int writable; |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 223 | int deallocating; |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 224 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 225 | /* True if this is a vanilla Buffered object (rather than a user derived |
| 226 | class) *and* the raw stream is a vanilla FileIO object. */ |
| 227 | int fast_closed_checks; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 228 | |
| 229 | /* Absolute position inside the raw stream (-1 if unknown). */ |
| 230 | Py_off_t abs_pos; |
| 231 | |
| 232 | /* A static buffer of size `buffer_size` */ |
| 233 | char *buffer; |
| 234 | /* Current logical position in the buffer. */ |
| 235 | Py_off_t pos; |
| 236 | /* Position of the raw stream in the buffer. */ |
| 237 | Py_off_t raw_pos; |
| 238 | |
| 239 | /* Just after the last buffered byte in the buffer, or -1 if the buffer |
| 240 | isn't ready for reading. */ |
| 241 | Py_off_t read_end; |
| 242 | |
| 243 | /* Just after the last byte actually written */ |
| 244 | Py_off_t write_pos; |
| 245 | /* Just after the last byte waiting to be written, or -1 if the buffer |
| 246 | isn't ready for writing. */ |
| 247 | Py_off_t write_end; |
| 248 | |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 249 | #ifdef WITH_THREAD |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 250 | PyThread_type_lock lock; |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 251 | volatile long owner; |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 252 | #endif |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 253 | |
| 254 | Py_ssize_t buffer_size; |
| 255 | Py_ssize_t buffer_mask; |
| 256 | |
| 257 | PyObject *dict; |
| 258 | PyObject *weakreflist; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 259 | } buffered; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 260 | |
| 261 | /* |
| 262 | Implementation notes: |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 263 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 264 | * BufferedReader, BufferedWriter and BufferedRandom try to share most |
| 265 | methods (this is helped by the members `readable` and `writable`, which |
| 266 | are initialized in the respective constructors) |
| 267 | * They also share a single buffer for reading and writing. This enables |
| 268 | interleaved reads and writes without flushing. It also makes the logic |
| 269 | a bit trickier to get right. |
| 270 | * The absolute position of the raw stream is cached, if possible, in the |
| 271 | `abs_pos` member. It must be updated every time an operation is done |
| 272 | on the raw stream. If not sure, it can be reinitialized by calling |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 273 | _buffered_raw_tell(), which queries the raw stream (_buffered_raw_seek() |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 274 | also does it). To read it, use RAW_TELL(). |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 275 | * Three helpers, _bufferedreader_raw_read, _bufferedwriter_raw_write and |
| 276 | _bufferedwriter_flush_unlocked do a lot of useful housekeeping. |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 277 | |
| 278 | NOTE: we should try to maintain block alignment of reads and writes to the |
| 279 | raw stream (according to the buffer size), but for now it is only done |
| 280 | in read() and friends. |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 281 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 282 | */ |
| 283 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 284 | /* These macros protect the buffered object against concurrent operations. */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 285 | |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 286 | #ifdef WITH_THREAD |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 287 | |
| 288 | static int |
| 289 | _enter_buffered_busy(buffered *self) |
| 290 | { |
| 291 | if (self->owner == PyThread_get_thread_ident()) { |
| 292 | PyErr_Format(PyExc_RuntimeError, |
| 293 | "reentrant call inside %R", self); |
| 294 | return 0; |
Antoine Pitrou | 5800b27 | 2009-11-01 12:05:48 +0000 | [diff] [blame] | 295 | } |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 296 | Py_BEGIN_ALLOW_THREADS |
| 297 | PyThread_acquire_lock(self->lock, 1); |
| 298 | Py_END_ALLOW_THREADS |
| 299 | return 1; |
| 300 | } |
| 301 | |
| 302 | #define ENTER_BUFFERED(self) \ |
| 303 | ( (PyThread_acquire_lock(self->lock, 0) ? \ |
| 304 | 1 : _enter_buffered_busy(self)) \ |
| 305 | && (self->owner = PyThread_get_thread_ident(), 1) ) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 306 | |
| 307 | #define LEAVE_BUFFERED(self) \ |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 308 | do { \ |
| 309 | self->owner = 0; \ |
| 310 | PyThread_release_lock(self->lock); \ |
| 311 | } while(0); |
| 312 | |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 313 | #else |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 314 | #define ENTER_BUFFERED(self) 1 |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 315 | #define LEAVE_BUFFERED(self) |
| 316 | #endif |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 317 | |
| 318 | #define CHECK_INITIALIZED(self) \ |
| 319 | if (self->ok <= 0) { \ |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 320 | if (self->detached) { \ |
| 321 | PyErr_SetString(PyExc_ValueError, \ |
| 322 | "raw stream has been detached"); \ |
| 323 | } else { \ |
| 324 | PyErr_SetString(PyExc_ValueError, \ |
| 325 | "I/O operation on uninitialized object"); \ |
| 326 | } \ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 327 | return NULL; \ |
| 328 | } |
| 329 | |
| 330 | #define CHECK_INITIALIZED_INT(self) \ |
| 331 | if (self->ok <= 0) { \ |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 332 | if (self->detached) { \ |
| 333 | PyErr_SetString(PyExc_ValueError, \ |
| 334 | "raw stream has been detached"); \ |
| 335 | } else { \ |
| 336 | PyErr_SetString(PyExc_ValueError, \ |
| 337 | "I/O operation on uninitialized object"); \ |
| 338 | } \ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 339 | return -1; \ |
| 340 | } |
| 341 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 342 | #define IS_CLOSED(self) \ |
| 343 | (self->fast_closed_checks \ |
| 344 | ? _PyFileIO_closed(self->raw) \ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 345 | : buffered_closed(self)) |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 346 | |
| 347 | #define CHECK_CLOSED(self, error_msg) \ |
| 348 | if (IS_CLOSED(self)) { \ |
| 349 | PyErr_SetString(PyExc_ValueError, error_msg); \ |
| 350 | return NULL; \ |
| 351 | } |
| 352 | |
| 353 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 354 | #define VALID_READ_BUFFER(self) \ |
| 355 | (self->readable && self->read_end != -1) |
| 356 | |
| 357 | #define VALID_WRITE_BUFFER(self) \ |
| 358 | (self->writable && self->write_end != -1) |
| 359 | |
| 360 | #define ADJUST_POSITION(self, _new_pos) \ |
| 361 | do { \ |
| 362 | self->pos = _new_pos; \ |
| 363 | if (VALID_READ_BUFFER(self) && self->read_end < self->pos) \ |
| 364 | self->read_end = self->pos; \ |
| 365 | } while(0) |
| 366 | |
| 367 | #define READAHEAD(self) \ |
| 368 | ((self->readable && VALID_READ_BUFFER(self)) \ |
| 369 | ? (self->read_end - self->pos) : 0) |
| 370 | |
| 371 | #define RAW_OFFSET(self) \ |
| 372 | (((VALID_READ_BUFFER(self) || VALID_WRITE_BUFFER(self)) \ |
| 373 | && self->raw_pos >= 0) ? self->raw_pos - self->pos : 0) |
| 374 | |
| 375 | #define RAW_TELL(self) \ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 376 | (self->abs_pos != -1 ? self->abs_pos : _buffered_raw_tell(self)) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 377 | |
| 378 | #define MINUS_LAST_BLOCK(self, size) \ |
| 379 | (self->buffer_mask ? \ |
| 380 | (size & ~self->buffer_mask) : \ |
| 381 | (self->buffer_size * (size / self->buffer_size))) |
| 382 | |
| 383 | |
| 384 | static void |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 385 | buffered_dealloc(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 386 | { |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 387 | self->deallocating = 1; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 388 | if (self->ok && _PyIOBase_finalize((PyObject *) self) < 0) |
| 389 | return; |
| 390 | _PyObject_GC_UNTRACK(self); |
| 391 | self->ok = 0; |
| 392 | if (self->weakreflist != NULL) |
| 393 | PyObject_ClearWeakRefs((PyObject *)self); |
| 394 | Py_CLEAR(self->raw); |
| 395 | if (self->buffer) { |
| 396 | PyMem_Free(self->buffer); |
| 397 | self->buffer = NULL; |
| 398 | } |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 399 | #ifdef WITH_THREAD |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 400 | if (self->lock) { |
| 401 | PyThread_free_lock(self->lock); |
| 402 | self->lock = NULL; |
| 403 | } |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 404 | #endif |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 405 | Py_CLEAR(self->dict); |
| 406 | Py_TYPE(self)->tp_free((PyObject *)self); |
| 407 | } |
| 408 | |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 409 | static PyObject * |
| 410 | buffered_sizeof(buffered *self, void *unused) |
| 411 | { |
| 412 | Py_ssize_t res; |
| 413 | |
| 414 | res = sizeof(buffered); |
| 415 | if (self->buffer) |
| 416 | res += self->buffer_size; |
| 417 | return PyLong_FromSsize_t(res); |
| 418 | } |
| 419 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 420 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 421 | buffered_traverse(buffered *self, visitproc visit, void *arg) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 422 | { |
| 423 | Py_VISIT(self->raw); |
| 424 | Py_VISIT(self->dict); |
| 425 | return 0; |
| 426 | } |
| 427 | |
| 428 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 429 | buffered_clear(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 430 | { |
| 431 | if (self->ok && _PyIOBase_finalize((PyObject *) self) < 0) |
| 432 | return -1; |
| 433 | self->ok = 0; |
| 434 | Py_CLEAR(self->raw); |
| 435 | Py_CLEAR(self->dict); |
| 436 | return 0; |
| 437 | } |
| 438 | |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 439 | /* Because this can call arbitrary code, it shouldn't be called when |
| 440 | the refcount is 0 (that is, not directly from tp_dealloc unless |
| 441 | the refcount has been temporarily re-incremented). */ |
Matthias Klose | bee3316 | 2010-11-16 20:07:51 +0000 | [diff] [blame] | 442 | static PyObject * |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 443 | buffered_dealloc_warn(buffered *self, PyObject *source) |
| 444 | { |
| 445 | if (self->ok && self->raw) { |
| 446 | PyObject *r; |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 447 | r = _PyObject_CallMethodId(self->raw, &PyId__dealloc_warn, "O", source); |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 448 | if (r) |
| 449 | Py_DECREF(r); |
| 450 | else |
| 451 | PyErr_Clear(); |
| 452 | } |
| 453 | Py_RETURN_NONE; |
| 454 | } |
| 455 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 456 | /* |
| 457 | * _BufferedIOMixin methods |
| 458 | * This is not a class, just a collection of methods that will be reused |
| 459 | * by BufferedReader and BufferedWriter |
| 460 | */ |
| 461 | |
| 462 | /* Flush and close */ |
| 463 | |
| 464 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 465 | buffered_simple_flush(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 466 | { |
| 467 | CHECK_INITIALIZED(self) |
| 468 | return PyObject_CallMethodObjArgs(self->raw, _PyIO_str_flush, NULL); |
| 469 | } |
| 470 | |
| 471 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 472 | buffered_closed(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 473 | { |
| 474 | int closed; |
| 475 | PyObject *res; |
| 476 | CHECK_INITIALIZED_INT(self) |
| 477 | res = PyObject_GetAttr(self->raw, _PyIO_str_closed); |
| 478 | if (res == NULL) |
| 479 | return -1; |
| 480 | closed = PyObject_IsTrue(res); |
| 481 | Py_DECREF(res); |
| 482 | return closed; |
| 483 | } |
| 484 | |
| 485 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 486 | buffered_closed_get(buffered *self, void *context) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 487 | { |
| 488 | CHECK_INITIALIZED(self) |
| 489 | return PyObject_GetAttr(self->raw, _PyIO_str_closed); |
| 490 | } |
| 491 | |
| 492 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 493 | buffered_close(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 494 | { |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 495 | PyObject *res = NULL, *exc = NULL, *val, *tb; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 496 | int r; |
| 497 | |
| 498 | CHECK_INITIALIZED(self) |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 499 | if (!ENTER_BUFFERED(self)) |
| 500 | return NULL; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 501 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 502 | r = buffered_closed(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 503 | if (r < 0) |
| 504 | goto end; |
| 505 | if (r > 0) { |
| 506 | res = Py_None; |
| 507 | Py_INCREF(res); |
| 508 | goto end; |
| 509 | } |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 510 | |
| 511 | if (self->deallocating) { |
| 512 | PyObject *r = buffered_dealloc_warn(self, (PyObject *) self); |
| 513 | if (r) |
| 514 | Py_DECREF(r); |
| 515 | else |
| 516 | PyErr_Clear(); |
| 517 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 518 | /* flush() will most probably re-take the lock, so drop it first */ |
| 519 | LEAVE_BUFFERED(self) |
| 520 | res = PyObject_CallMethodObjArgs((PyObject *)self, _PyIO_str_flush, NULL); |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 521 | if (!ENTER_BUFFERED(self)) |
| 522 | return NULL; |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 523 | if (res == NULL) |
| 524 | PyErr_Fetch(&exc, &val, &tb); |
| 525 | else |
| 526 | Py_DECREF(res); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 527 | |
| 528 | res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_close, NULL); |
| 529 | |
Jesus Cea | dc46945 | 2012-10-04 12:37:56 +0200 | [diff] [blame] | 530 | if (self->buffer) { |
| 531 | PyMem_Free(self->buffer); |
| 532 | self->buffer = NULL; |
| 533 | } |
| 534 | |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 535 | if (exc != NULL) { |
| 536 | if (res != NULL) { |
| 537 | Py_CLEAR(res); |
| 538 | PyErr_Restore(exc, val, tb); |
| 539 | } |
| 540 | else { |
| 541 | PyObject *val2; |
| 542 | Py_DECREF(exc); |
| 543 | Py_XDECREF(tb); |
| 544 | PyErr_Fetch(&exc, &val2, &tb); |
| 545 | PyErr_NormalizeException(&exc, &val2, &tb); |
| 546 | PyException_SetContext(val2, val); |
| 547 | PyErr_Restore(exc, val2, tb); |
| 548 | } |
| 549 | } |
| 550 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 551 | end: |
| 552 | LEAVE_BUFFERED(self) |
| 553 | return res; |
| 554 | } |
| 555 | |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 556 | /* detach */ |
| 557 | |
| 558 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 559 | buffered_detach(buffered *self, PyObject *args) |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 560 | { |
| 561 | PyObject *raw, *res; |
| 562 | CHECK_INITIALIZED(self) |
| 563 | res = PyObject_CallMethodObjArgs((PyObject *)self, _PyIO_str_flush, NULL); |
| 564 | if (res == NULL) |
| 565 | return NULL; |
| 566 | Py_DECREF(res); |
| 567 | raw = self->raw; |
| 568 | self->raw = NULL; |
| 569 | self->detached = 1; |
| 570 | self->ok = 0; |
| 571 | return raw; |
| 572 | } |
| 573 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 574 | /* Inquiries */ |
| 575 | |
| 576 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 577 | buffered_seekable(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 578 | { |
| 579 | CHECK_INITIALIZED(self) |
| 580 | return PyObject_CallMethodObjArgs(self->raw, _PyIO_str_seekable, NULL); |
| 581 | } |
| 582 | |
| 583 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 584 | buffered_readable(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 585 | { |
| 586 | CHECK_INITIALIZED(self) |
| 587 | return PyObject_CallMethodObjArgs(self->raw, _PyIO_str_readable, NULL); |
| 588 | } |
| 589 | |
| 590 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 591 | buffered_writable(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 592 | { |
| 593 | CHECK_INITIALIZED(self) |
| 594 | return PyObject_CallMethodObjArgs(self->raw, _PyIO_str_writable, NULL); |
| 595 | } |
| 596 | |
| 597 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 598 | buffered_name_get(buffered *self, void *context) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 599 | { |
| 600 | CHECK_INITIALIZED(self) |
Martin v. Löwis | 767046a | 2011-10-14 15:35:36 +0200 | [diff] [blame] | 601 | return _PyObject_GetAttrId(self->raw, &PyId_name); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 605 | buffered_mode_get(buffered *self, void *context) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 606 | { |
| 607 | CHECK_INITIALIZED(self) |
Martin v. Löwis | 767046a | 2011-10-14 15:35:36 +0200 | [diff] [blame] | 608 | return _PyObject_GetAttrId(self->raw, &PyId_mode); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 609 | } |
| 610 | |
| 611 | /* Lower-level APIs */ |
| 612 | |
| 613 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 614 | buffered_fileno(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 615 | { |
| 616 | CHECK_INITIALIZED(self) |
| 617 | return PyObject_CallMethodObjArgs(self->raw, _PyIO_str_fileno, NULL); |
| 618 | } |
| 619 | |
| 620 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 621 | buffered_isatty(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 622 | { |
| 623 | CHECK_INITIALIZED(self) |
| 624 | return PyObject_CallMethodObjArgs(self->raw, _PyIO_str_isatty, NULL); |
| 625 | } |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 626 | |
Antoine Pitrou | 243757e | 2010-11-05 21:15:39 +0000 | [diff] [blame] | 627 | /* Serialization */ |
| 628 | |
| 629 | static PyObject * |
| 630 | buffered_getstate(buffered *self, PyObject *args) |
| 631 | { |
| 632 | PyErr_Format(PyExc_TypeError, |
| 633 | "cannot serialize '%s' object", Py_TYPE(self)->tp_name); |
| 634 | return NULL; |
| 635 | } |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 636 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 637 | /* Forward decls */ |
| 638 | static PyObject * |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 639 | _bufferedwriter_flush_unlocked(buffered *); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 640 | static Py_ssize_t |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 641 | _bufferedreader_fill_buffer(buffered *self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 642 | static void |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 643 | _bufferedreader_reset_buf(buffered *self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 644 | static void |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 645 | _bufferedwriter_reset_buf(buffered *self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 646 | static PyObject * |
Victor Stinner | bc93a11 | 2011-06-01 00:01:24 +0200 | [diff] [blame] | 647 | _bufferedreader_peek_unlocked(buffered *self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 648 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 649 | _bufferedreader_read_all(buffered *self); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 650 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 651 | _bufferedreader_read_fast(buffered *self, Py_ssize_t); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 652 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 653 | _bufferedreader_read_generic(buffered *self, Py_ssize_t); |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 654 | static Py_ssize_t |
| 655 | _bufferedreader_raw_read(buffered *self, char *start, Py_ssize_t len); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 656 | |
| 657 | /* |
| 658 | * Helpers |
| 659 | */ |
| 660 | |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 661 | /* Sets the current error to BlockingIOError */ |
| 662 | static void |
| 663 | _set_BlockingIOError(char *msg, Py_ssize_t written) |
| 664 | { |
| 665 | PyObject *err; |
| 666 | err = PyObject_CallFunction(PyExc_BlockingIOError, "isn", |
| 667 | errno, msg, written); |
| 668 | if (err) |
| 669 | PyErr_SetObject(PyExc_BlockingIOError, err); |
| 670 | Py_XDECREF(err); |
| 671 | } |
| 672 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 673 | /* Returns the address of the `written` member if a BlockingIOError was |
| 674 | raised, NULL otherwise. The error is always re-raised. */ |
| 675 | static Py_ssize_t * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 676 | _buffered_check_blocking_error(void) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 677 | { |
| 678 | PyObject *t, *v, *tb; |
Antoine Pitrou | 6b4883d | 2011-10-12 02:54:14 +0200 | [diff] [blame] | 679 | PyOSErrorObject *err; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 680 | |
| 681 | PyErr_Fetch(&t, &v, &tb); |
| 682 | if (v == NULL || !PyErr_GivenExceptionMatches(v, PyExc_BlockingIOError)) { |
| 683 | PyErr_Restore(t, v, tb); |
| 684 | return NULL; |
| 685 | } |
Antoine Pitrou | 6b4883d | 2011-10-12 02:54:14 +0200 | [diff] [blame] | 686 | err = (PyOSErrorObject *) v; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 687 | /* TODO: sanity check (err->written >= 0) */ |
| 688 | PyErr_Restore(t, v, tb); |
| 689 | return &err->written; |
| 690 | } |
| 691 | |
| 692 | static Py_off_t |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 693 | _buffered_raw_tell(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 694 | { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 695 | Py_off_t n; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 696 | PyObject *res; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 697 | res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_tell, NULL); |
| 698 | if (res == NULL) |
| 699 | return -1; |
| 700 | n = PyNumber_AsOff_t(res, PyExc_ValueError); |
| 701 | Py_DECREF(res); |
| 702 | if (n < 0) { |
| 703 | if (!PyErr_Occurred()) |
| 704 | PyErr_Format(PyExc_IOError, |
Mark Dickinson | 1a0aaaa | 2009-11-24 20:54:11 +0000 | [diff] [blame] | 705 | "Raw stream returned invalid position %" PY_PRIdOFF, |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 706 | (PY_OFF_T_COMPAT)n); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 707 | return -1; |
| 708 | } |
| 709 | self->abs_pos = n; |
| 710 | return n; |
| 711 | } |
| 712 | |
| 713 | static Py_off_t |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 714 | _buffered_raw_seek(buffered *self, Py_off_t target, int whence) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 715 | { |
| 716 | PyObject *res, *posobj, *whenceobj; |
| 717 | Py_off_t n; |
| 718 | |
| 719 | posobj = PyLong_FromOff_t(target); |
| 720 | if (posobj == NULL) |
| 721 | return -1; |
| 722 | whenceobj = PyLong_FromLong(whence); |
| 723 | if (whenceobj == NULL) { |
| 724 | Py_DECREF(posobj); |
| 725 | return -1; |
| 726 | } |
| 727 | res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_seek, |
| 728 | posobj, whenceobj, NULL); |
| 729 | Py_DECREF(posobj); |
| 730 | Py_DECREF(whenceobj); |
| 731 | if (res == NULL) |
| 732 | return -1; |
| 733 | n = PyNumber_AsOff_t(res, PyExc_ValueError); |
| 734 | Py_DECREF(res); |
| 735 | if (n < 0) { |
| 736 | if (!PyErr_Occurred()) |
| 737 | PyErr_Format(PyExc_IOError, |
Mark Dickinson | 1a0aaaa | 2009-11-24 20:54:11 +0000 | [diff] [blame] | 738 | "Raw stream returned invalid position %" PY_PRIdOFF, |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 739 | (PY_OFF_T_COMPAT)n); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 740 | return -1; |
| 741 | } |
| 742 | self->abs_pos = n; |
| 743 | return n; |
| 744 | } |
| 745 | |
| 746 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 747 | _buffered_init(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 748 | { |
| 749 | Py_ssize_t n; |
| 750 | if (self->buffer_size <= 0) { |
| 751 | PyErr_SetString(PyExc_ValueError, |
| 752 | "buffer size must be strictly positive"); |
| 753 | return -1; |
| 754 | } |
| 755 | if (self->buffer) |
| 756 | PyMem_Free(self->buffer); |
| 757 | self->buffer = PyMem_Malloc(self->buffer_size); |
| 758 | if (self->buffer == NULL) { |
| 759 | PyErr_NoMemory(); |
| 760 | return -1; |
| 761 | } |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 762 | #ifdef WITH_THREAD |
Antoine Pitrou | c881f15 | 2010-08-01 16:53:42 +0000 | [diff] [blame] | 763 | if (self->lock) |
| 764 | PyThread_free_lock(self->lock); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 765 | self->lock = PyThread_allocate_lock(); |
| 766 | if (self->lock == NULL) { |
| 767 | PyErr_SetString(PyExc_RuntimeError, "can't allocate read lock"); |
| 768 | return -1; |
| 769 | } |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 770 | self->owner = 0; |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 771 | #endif |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 772 | /* Find out whether buffer_size is a power of 2 */ |
| 773 | /* XXX is this optimization useful? */ |
| 774 | for (n = self->buffer_size - 1; n & 1; n >>= 1) |
| 775 | ; |
| 776 | if (n == 0) |
| 777 | self->buffer_mask = self->buffer_size - 1; |
| 778 | else |
| 779 | self->buffer_mask = 0; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 780 | if (_buffered_raw_tell(self) == -1) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 781 | PyErr_Clear(); |
| 782 | return 0; |
| 783 | } |
| 784 | |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 785 | /* Return 1 if an EnvironmentError with errno == EINTR is set (and then |
| 786 | clears the error indicator), 0 otherwise. |
| 787 | Should only be called when PyErr_Occurred() is true. |
| 788 | */ |
Gregory P. Smith | 5135992 | 2012-06-23 23:55:39 -0700 | [diff] [blame] | 789 | int |
| 790 | _PyIO_trap_eintr(void) |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 791 | { |
| 792 | static PyObject *eintr_int = NULL; |
| 793 | PyObject *typ, *val, *tb; |
| 794 | PyEnvironmentErrorObject *env_err; |
| 795 | |
| 796 | if (eintr_int == NULL) { |
| 797 | eintr_int = PyLong_FromLong(EINTR); |
| 798 | assert(eintr_int != NULL); |
| 799 | } |
| 800 | if (!PyErr_ExceptionMatches(PyExc_EnvironmentError)) |
| 801 | return 0; |
| 802 | PyErr_Fetch(&typ, &val, &tb); |
| 803 | PyErr_NormalizeException(&typ, &val, &tb); |
| 804 | env_err = (PyEnvironmentErrorObject *) val; |
| 805 | assert(env_err != NULL); |
| 806 | if (env_err->myerrno != NULL && |
| 807 | PyObject_RichCompareBool(env_err->myerrno, eintr_int, Py_EQ) > 0) { |
| 808 | Py_DECREF(typ); |
| 809 | Py_DECREF(val); |
| 810 | Py_XDECREF(tb); |
| 811 | return 1; |
| 812 | } |
| 813 | /* This silences any error set by PyObject_RichCompareBool() */ |
| 814 | PyErr_Restore(typ, val, tb); |
| 815 | return 0; |
| 816 | } |
| 817 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 818 | /* |
| 819 | * Shared methods and wrappers |
| 820 | */ |
| 821 | |
| 822 | static PyObject * |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 823 | buffered_flush_and_rewind_unlocked(buffered *self) |
| 824 | { |
| 825 | PyObject *res; |
| 826 | |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 827 | res = _bufferedwriter_flush_unlocked(self); |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 828 | if (res == NULL) |
| 829 | return NULL; |
| 830 | Py_DECREF(res); |
| 831 | |
| 832 | if (self->readable) { |
| 833 | /* Rewind the raw stream so that its position corresponds to |
| 834 | the current logical position. */ |
| 835 | Py_off_t n; |
| 836 | n = _buffered_raw_seek(self, -RAW_OFFSET(self), 1); |
| 837 | _bufferedreader_reset_buf(self); |
| 838 | if (n == -1) |
| 839 | return NULL; |
| 840 | } |
| 841 | Py_RETURN_NONE; |
| 842 | } |
| 843 | |
| 844 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 845 | buffered_flush(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 846 | { |
| 847 | PyObject *res; |
| 848 | |
| 849 | CHECK_INITIALIZED(self) |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 850 | CHECK_CLOSED(self, "flush of closed file") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 851 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 852 | if (!ENTER_BUFFERED(self)) |
| 853 | return NULL; |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 854 | res = buffered_flush_and_rewind_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 855 | LEAVE_BUFFERED(self) |
| 856 | |
| 857 | return res; |
| 858 | } |
| 859 | |
| 860 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 861 | buffered_peek(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 862 | { |
| 863 | Py_ssize_t n = 0; |
| 864 | PyObject *res = NULL; |
| 865 | |
| 866 | CHECK_INITIALIZED(self) |
| 867 | if (!PyArg_ParseTuple(args, "|n:peek", &n)) { |
| 868 | return NULL; |
| 869 | } |
| 870 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 871 | if (!ENTER_BUFFERED(self)) |
| 872 | return NULL; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 873 | |
| 874 | if (self->writable) { |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 875 | res = buffered_flush_and_rewind_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 876 | if (res == NULL) |
| 877 | goto end; |
| 878 | Py_CLEAR(res); |
| 879 | } |
Victor Stinner | bc93a11 | 2011-06-01 00:01:24 +0200 | [diff] [blame] | 880 | res = _bufferedreader_peek_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 881 | |
| 882 | end: |
| 883 | LEAVE_BUFFERED(self) |
| 884 | return res; |
| 885 | } |
| 886 | |
| 887 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 888 | buffered_read(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 889 | { |
| 890 | Py_ssize_t n = -1; |
| 891 | PyObject *res; |
| 892 | |
| 893 | CHECK_INITIALIZED(self) |
Benjamin Peterson | bf5ff76 | 2009-12-13 19:25:34 +0000 | [diff] [blame] | 894 | if (!PyArg_ParseTuple(args, "|O&:read", &_PyIO_ConvertSsize_t, &n)) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 895 | return NULL; |
| 896 | } |
| 897 | if (n < -1) { |
| 898 | PyErr_SetString(PyExc_ValueError, |
| 899 | "read length must be positive or -1"); |
| 900 | return NULL; |
| 901 | } |
| 902 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 903 | CHECK_CLOSED(self, "read of closed file") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 904 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 905 | if (n == -1) { |
| 906 | /* The number of bytes is unspecified, read until the end of stream */ |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 907 | if (!ENTER_BUFFERED(self)) |
| 908 | return NULL; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 909 | res = _bufferedreader_read_all(self); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 910 | } |
| 911 | else { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 912 | res = _bufferedreader_read_fast(self, n); |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 913 | if (res != Py_None) |
| 914 | return res; |
| 915 | Py_DECREF(res); |
| 916 | if (!ENTER_BUFFERED(self)) |
| 917 | return NULL; |
| 918 | res = _bufferedreader_read_generic(self, n); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 919 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 920 | |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 921 | LEAVE_BUFFERED(self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 922 | return res; |
| 923 | } |
| 924 | |
| 925 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 926 | buffered_read1(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 927 | { |
| 928 | Py_ssize_t n, have, r; |
| 929 | PyObject *res = NULL; |
| 930 | |
| 931 | CHECK_INITIALIZED(self) |
| 932 | if (!PyArg_ParseTuple(args, "n:read1", &n)) { |
| 933 | return NULL; |
| 934 | } |
| 935 | |
| 936 | if (n < 0) { |
| 937 | PyErr_SetString(PyExc_ValueError, |
| 938 | "read length must be positive"); |
| 939 | return NULL; |
| 940 | } |
| 941 | if (n == 0) |
| 942 | return PyBytes_FromStringAndSize(NULL, 0); |
| 943 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 944 | /* Return up to n bytes. If at least one byte is buffered, we |
| 945 | only return buffered bytes. Otherwise, we do one raw read. */ |
| 946 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 947 | have = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 948 | if (have > 0) { |
Antoine Pitrou | 56a220a | 2011-11-16 00:56:10 +0100 | [diff] [blame] | 949 | n = Py_MIN(have, n); |
| 950 | res = _bufferedreader_read_fast(self, n); |
| 951 | assert(res != Py_None); |
| 952 | return res; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 953 | } |
Antoine Pitrou | 56a220a | 2011-11-16 00:56:10 +0100 | [diff] [blame] | 954 | res = PyBytes_FromStringAndSize(NULL, n); |
| 955 | if (res == NULL) |
| 956 | return NULL; |
| 957 | if (!ENTER_BUFFERED(self)) { |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 958 | Py_DECREF(res); |
Antoine Pitrou | 56a220a | 2011-11-16 00:56:10 +0100 | [diff] [blame] | 959 | return NULL; |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 960 | } |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 961 | _bufferedreader_reset_buf(self); |
Antoine Pitrou | 56a220a | 2011-11-16 00:56:10 +0100 | [diff] [blame] | 962 | r = _bufferedreader_raw_read(self, PyBytes_AS_STRING(res), n); |
| 963 | LEAVE_BUFFERED(self) |
| 964 | if (r == -1) { |
| 965 | Py_DECREF(res); |
| 966 | return NULL; |
| 967 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 968 | if (r == -2) |
| 969 | r = 0; |
| 970 | if (n > r) |
Antoine Pitrou | 56a220a | 2011-11-16 00:56:10 +0100 | [diff] [blame] | 971 | _PyBytes_Resize(&res, r); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 972 | return res; |
| 973 | } |
| 974 | |
| 975 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 976 | buffered_readinto(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 977 | { |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 978 | Py_buffer buf; |
| 979 | Py_ssize_t n, written = 0, remaining; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 980 | PyObject *res = NULL; |
| 981 | |
| 982 | CHECK_INITIALIZED(self) |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 983 | |
| 984 | if (!PyArg_ParseTuple(args, "w*:readinto", &buf)) |
| 985 | return NULL; |
| 986 | |
| 987 | n = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 988 | if (n > 0) { |
| 989 | if (n >= buf.len) { |
| 990 | memcpy(buf.buf, self->buffer + self->pos, buf.len); |
| 991 | self->pos += buf.len; |
| 992 | res = PyLong_FromSsize_t(buf.len); |
| 993 | goto end_unlocked; |
| 994 | } |
| 995 | memcpy(buf.buf, self->buffer + self->pos, n); |
| 996 | self->pos += n; |
| 997 | written = n; |
| 998 | } |
| 999 | |
| 1000 | if (!ENTER_BUFFERED(self)) |
| 1001 | goto end_unlocked; |
| 1002 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1003 | if (self->writable) { |
Antoine Pitrou | e8bb1a0 | 2011-08-20 14:52:04 +0200 | [diff] [blame] | 1004 | res = buffered_flush_and_rewind_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1005 | if (res == NULL) |
| 1006 | goto end; |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1007 | Py_CLEAR(res); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1008 | } |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1009 | |
| 1010 | _bufferedreader_reset_buf(self); |
| 1011 | self->pos = 0; |
| 1012 | |
| 1013 | for (remaining = buf.len - written; |
| 1014 | remaining > 0; |
| 1015 | written += n, remaining -= n) { |
| 1016 | /* If remaining bytes is larger than internal buffer size, copy |
| 1017 | * directly into caller's buffer. */ |
| 1018 | if (remaining > self->buffer_size) { |
Antoine Pitrou | 4e19e11 | 2011-05-12 02:07:00 +0200 | [diff] [blame] | 1019 | n = _bufferedreader_raw_read(self, (char *) buf.buf + written, |
| 1020 | remaining); |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1021 | } |
| 1022 | else { |
| 1023 | n = _bufferedreader_fill_buffer(self); |
| 1024 | if (n > 0) { |
| 1025 | if (n > remaining) |
| 1026 | n = remaining; |
Antoine Pitrou | 4e19e11 | 2011-05-12 02:07:00 +0200 | [diff] [blame] | 1027 | memcpy((char *) buf.buf + written, |
| 1028 | self->buffer + self->pos, n); |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1029 | self->pos += n; |
| 1030 | continue; /* short circuit */ |
| 1031 | } |
| 1032 | } |
| 1033 | if (n == 0 || (n == -2 && written > 0)) |
| 1034 | break; |
| 1035 | if (n < 0) { |
| 1036 | if (n == -2) { |
| 1037 | Py_INCREF(Py_None); |
| 1038 | res = Py_None; |
| 1039 | } |
| 1040 | goto end; |
| 1041 | } |
| 1042 | } |
| 1043 | res = PyLong_FromSsize_t(written); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1044 | |
| 1045 | end: |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1046 | LEAVE_BUFFERED(self); |
| 1047 | end_unlocked: |
| 1048 | PyBuffer_Release(&buf); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1049 | return res; |
| 1050 | } |
| 1051 | |
| 1052 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1053 | _buffered_readline(buffered *self, Py_ssize_t limit) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1054 | { |
| 1055 | PyObject *res = NULL; |
| 1056 | PyObject *chunks = NULL; |
| 1057 | Py_ssize_t n, written = 0; |
| 1058 | const char *start, *s, *end; |
| 1059 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1060 | CHECK_CLOSED(self, "readline of closed file") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1061 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1062 | /* First, try to find a line in the buffer. This can run unlocked because |
| 1063 | the calls to the C API are simple enough that they can't trigger |
| 1064 | any thread switch. */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1065 | n = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 1066 | if (limit >= 0 && n > limit) |
| 1067 | n = limit; |
| 1068 | start = self->buffer + self->pos; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1069 | s = memchr(start, '\n', n); |
| 1070 | if (s != NULL) { |
| 1071 | res = PyBytes_FromStringAndSize(start, s - start + 1); |
| 1072 | if (res != NULL) |
| 1073 | self->pos += s - start + 1; |
| 1074 | goto end_unlocked; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1075 | } |
| 1076 | if (n == limit) { |
| 1077 | res = PyBytes_FromStringAndSize(start, n); |
| 1078 | if (res != NULL) |
| 1079 | self->pos += n; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1080 | goto end_unlocked; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1081 | } |
| 1082 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 1083 | if (!ENTER_BUFFERED(self)) |
| 1084 | goto end_unlocked; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1085 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1086 | /* Now we try to get some more from the raw stream */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1087 | chunks = PyList_New(0); |
| 1088 | if (chunks == NULL) |
| 1089 | goto end; |
| 1090 | if (n > 0) { |
| 1091 | res = PyBytes_FromStringAndSize(start, n); |
| 1092 | if (res == NULL) |
| 1093 | goto end; |
| 1094 | if (PyList_Append(chunks, res) < 0) { |
| 1095 | Py_CLEAR(res); |
| 1096 | goto end; |
| 1097 | } |
| 1098 | Py_CLEAR(res); |
| 1099 | written += n; |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1100 | self->pos += n; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1101 | if (limit >= 0) |
| 1102 | limit -= n; |
| 1103 | } |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1104 | if (self->writable) { |
| 1105 | PyObject *r = buffered_flush_and_rewind_unlocked(self); |
| 1106 | if (r == NULL) |
| 1107 | goto end; |
| 1108 | Py_DECREF(r); |
| 1109 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1110 | |
| 1111 | for (;;) { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1112 | _bufferedreader_reset_buf(self); |
| 1113 | n = _bufferedreader_fill_buffer(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1114 | if (n == -1) |
| 1115 | goto end; |
| 1116 | if (n <= 0) |
| 1117 | break; |
| 1118 | if (limit >= 0 && n > limit) |
| 1119 | n = limit; |
| 1120 | start = self->buffer; |
| 1121 | end = start + n; |
| 1122 | s = start; |
| 1123 | while (s < end) { |
| 1124 | if (*s++ == '\n') { |
| 1125 | res = PyBytes_FromStringAndSize(start, s - start); |
| 1126 | if (res == NULL) |
| 1127 | goto end; |
| 1128 | self->pos = s - start; |
| 1129 | goto found; |
| 1130 | } |
| 1131 | } |
| 1132 | res = PyBytes_FromStringAndSize(start, n); |
| 1133 | if (res == NULL) |
| 1134 | goto end; |
| 1135 | if (n == limit) { |
| 1136 | self->pos = n; |
| 1137 | break; |
| 1138 | } |
| 1139 | if (PyList_Append(chunks, res) < 0) { |
| 1140 | Py_CLEAR(res); |
| 1141 | goto end; |
| 1142 | } |
| 1143 | Py_CLEAR(res); |
| 1144 | written += n; |
| 1145 | if (limit >= 0) |
| 1146 | limit -= n; |
| 1147 | } |
| 1148 | found: |
| 1149 | if (res != NULL && PyList_Append(chunks, res) < 0) { |
| 1150 | Py_CLEAR(res); |
| 1151 | goto end; |
| 1152 | } |
| 1153 | Py_CLEAR(res); |
| 1154 | res = _PyBytes_Join(_PyIO_empty_bytes, chunks); |
| 1155 | |
| 1156 | end: |
| 1157 | LEAVE_BUFFERED(self) |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1158 | end_unlocked: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1159 | Py_XDECREF(chunks); |
| 1160 | return res; |
| 1161 | } |
| 1162 | |
| 1163 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1164 | buffered_readline(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1165 | { |
| 1166 | Py_ssize_t limit = -1; |
| 1167 | |
| 1168 | CHECK_INITIALIZED(self) |
Benjamin Peterson | bf5ff76 | 2009-12-13 19:25:34 +0000 | [diff] [blame] | 1169 | if (!PyArg_ParseTuple(args, "|O&:readline", &_PyIO_ConvertSsize_t, &limit)) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1170 | return NULL; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1171 | return _buffered_readline(self, limit); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1172 | } |
| 1173 | |
| 1174 | |
| 1175 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1176 | buffered_tell(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1177 | { |
| 1178 | Py_off_t pos; |
| 1179 | |
| 1180 | CHECK_INITIALIZED(self) |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1181 | pos = _buffered_raw_tell(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1182 | if (pos == -1) |
| 1183 | return NULL; |
| 1184 | pos -= RAW_OFFSET(self); |
| 1185 | /* TODO: sanity check (pos >= 0) */ |
| 1186 | return PyLong_FromOff_t(pos); |
| 1187 | } |
| 1188 | |
| 1189 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1190 | buffered_seek(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1191 | { |
| 1192 | Py_off_t target, n; |
| 1193 | int whence = 0; |
| 1194 | PyObject *targetobj, *res = NULL; |
| 1195 | |
| 1196 | CHECK_INITIALIZED(self) |
| 1197 | if (!PyArg_ParseTuple(args, "O|i:seek", &targetobj, &whence)) { |
| 1198 | return NULL; |
| 1199 | } |
Jesus Cea | 9436361 | 2012-06-22 18:32:07 +0200 | [diff] [blame] | 1200 | |
| 1201 | /* Do some error checking instead of trusting OS 'seek()' |
| 1202 | ** error detection, just in case. |
| 1203 | */ |
| 1204 | if ((whence < 0 || whence >2) |
| 1205 | #ifdef SEEK_HOLE |
| 1206 | && (whence != SEEK_HOLE) |
| 1207 | #endif |
| 1208 | #ifdef SEEK_DATA |
| 1209 | && (whence != SEEK_DATA) |
| 1210 | #endif |
| 1211 | ) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1212 | PyErr_Format(PyExc_ValueError, |
Jesus Cea | 9436361 | 2012-06-22 18:32:07 +0200 | [diff] [blame] | 1213 | "whence value %d unsupported", whence); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1214 | return NULL; |
| 1215 | } |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1216 | |
| 1217 | CHECK_CLOSED(self, "seek of closed file") |
| 1218 | |
Antoine Pitrou | 1e44fec | 2011-10-04 12:26:20 +0200 | [diff] [blame] | 1219 | if (_PyIOBase_check_seekable(self->raw, Py_True) == NULL) |
| 1220 | return NULL; |
| 1221 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1222 | target = PyNumber_AsOff_t(targetobj, PyExc_ValueError); |
| 1223 | if (target == -1 && PyErr_Occurred()) |
| 1224 | return NULL; |
| 1225 | |
Jesus Cea | 9436361 | 2012-06-22 18:32:07 +0200 | [diff] [blame] | 1226 | /* SEEK_SET and SEEK_CUR are special because we could seek inside the |
| 1227 | buffer. Other whence values must be managed without this optimization. |
| 1228 | Some Operating Systems can provide additional values, like |
| 1229 | SEEK_HOLE/SEEK_DATA. */ |
| 1230 | if (((whence == 0) || (whence == 1)) && self->readable) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1231 | Py_off_t current, avail; |
| 1232 | /* Check if seeking leaves us inside the current buffer, |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1233 | so as to return quickly if possible. Also, we needn't take the |
| 1234 | lock in this fast path. |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1235 | Don't know how to do that when whence == 2, though. */ |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1236 | /* NOTE: RAW_TELL() can release the GIL but the object is in a stable |
| 1237 | state at this point. */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1238 | current = RAW_TELL(self); |
| 1239 | avail = READAHEAD(self); |
| 1240 | if (avail > 0) { |
| 1241 | Py_off_t offset; |
| 1242 | if (whence == 0) |
| 1243 | offset = target - (current - RAW_OFFSET(self)); |
| 1244 | else |
| 1245 | offset = target; |
| 1246 | if (offset >= -self->pos && offset <= avail) { |
| 1247 | self->pos += offset; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1248 | return PyLong_FromOff_t(current - avail + offset); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1249 | } |
| 1250 | } |
| 1251 | } |
| 1252 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 1253 | if (!ENTER_BUFFERED(self)) |
| 1254 | return NULL; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1255 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1256 | /* Fallback: invoke raw seek() method and clear buffer */ |
| 1257 | if (self->writable) { |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1258 | res = _bufferedwriter_flush_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1259 | if (res == NULL) |
| 1260 | goto end; |
| 1261 | Py_CLEAR(res); |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1262 | _bufferedwriter_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1263 | } |
| 1264 | |
| 1265 | /* TODO: align on block boundary and read buffer if needed? */ |
| 1266 | if (whence == 1) |
| 1267 | target -= RAW_OFFSET(self); |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1268 | n = _buffered_raw_seek(self, target, whence); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1269 | if (n == -1) |
| 1270 | goto end; |
| 1271 | self->raw_pos = -1; |
| 1272 | res = PyLong_FromOff_t(n); |
| 1273 | if (res != NULL && self->readable) |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1274 | _bufferedreader_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1275 | |
| 1276 | end: |
| 1277 | LEAVE_BUFFERED(self) |
| 1278 | return res; |
| 1279 | } |
| 1280 | |
| 1281 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1282 | buffered_truncate(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1283 | { |
| 1284 | PyObject *pos = Py_None; |
| 1285 | PyObject *res = NULL; |
| 1286 | |
| 1287 | CHECK_INITIALIZED(self) |
| 1288 | if (!PyArg_ParseTuple(args, "|O:truncate", &pos)) { |
| 1289 | return NULL; |
| 1290 | } |
| 1291 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 1292 | if (!ENTER_BUFFERED(self)) |
| 1293 | return NULL; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1294 | |
| 1295 | if (self->writable) { |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1296 | res = buffered_flush_and_rewind_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1297 | if (res == NULL) |
| 1298 | goto end; |
| 1299 | Py_CLEAR(res); |
| 1300 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1301 | res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_truncate, pos, NULL); |
| 1302 | if (res == NULL) |
| 1303 | goto end; |
| 1304 | /* Reset cached position */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1305 | if (_buffered_raw_tell(self) == -1) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1306 | PyErr_Clear(); |
| 1307 | |
| 1308 | end: |
| 1309 | LEAVE_BUFFERED(self) |
| 1310 | return res; |
| 1311 | } |
| 1312 | |
| 1313 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1314 | buffered_iternext(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1315 | { |
| 1316 | PyObject *line; |
| 1317 | PyTypeObject *tp; |
| 1318 | |
| 1319 | CHECK_INITIALIZED(self); |
| 1320 | |
| 1321 | tp = Py_TYPE(self); |
| 1322 | if (tp == &PyBufferedReader_Type || |
| 1323 | tp == &PyBufferedRandom_Type) { |
| 1324 | /* Skip method call overhead for speed */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1325 | line = _buffered_readline(self, -1); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1326 | } |
| 1327 | else { |
| 1328 | line = PyObject_CallMethodObjArgs((PyObject *)self, |
| 1329 | _PyIO_str_readline, NULL); |
| 1330 | if (line && !PyBytes_Check(line)) { |
| 1331 | PyErr_Format(PyExc_IOError, |
| 1332 | "readline() should have returned a bytes object, " |
| 1333 | "not '%.200s'", Py_TYPE(line)->tp_name); |
| 1334 | Py_DECREF(line); |
| 1335 | return NULL; |
| 1336 | } |
| 1337 | } |
| 1338 | |
| 1339 | if (line == NULL) |
| 1340 | return NULL; |
| 1341 | |
| 1342 | if (PyBytes_GET_SIZE(line) == 0) { |
| 1343 | /* Reached EOF or would have blocked */ |
| 1344 | Py_DECREF(line); |
| 1345 | return NULL; |
| 1346 | } |
| 1347 | |
| 1348 | return line; |
| 1349 | } |
| 1350 | |
Antoine Pitrou | 716c444 | 2009-05-23 19:04:03 +0000 | [diff] [blame] | 1351 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1352 | buffered_repr(buffered *self) |
Antoine Pitrou | 716c444 | 2009-05-23 19:04:03 +0000 | [diff] [blame] | 1353 | { |
| 1354 | PyObject *nameobj, *res; |
| 1355 | |
Martin v. Löwis | 767046a | 2011-10-14 15:35:36 +0200 | [diff] [blame] | 1356 | nameobj = _PyObject_GetAttrId((PyObject *) self, &PyId_name); |
Antoine Pitrou | 716c444 | 2009-05-23 19:04:03 +0000 | [diff] [blame] | 1357 | if (nameobj == NULL) { |
| 1358 | if (PyErr_ExceptionMatches(PyExc_AttributeError)) |
| 1359 | PyErr_Clear(); |
| 1360 | else |
| 1361 | return NULL; |
| 1362 | res = PyUnicode_FromFormat("<%s>", Py_TYPE(self)->tp_name); |
| 1363 | } |
| 1364 | else { |
| 1365 | res = PyUnicode_FromFormat("<%s name=%R>", |
| 1366 | Py_TYPE(self)->tp_name, nameobj); |
| 1367 | Py_DECREF(nameobj); |
| 1368 | } |
| 1369 | return res; |
| 1370 | } |
| 1371 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1372 | /* |
| 1373 | * class BufferedReader |
| 1374 | */ |
| 1375 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1376 | PyDoc_STRVAR(bufferedreader_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1377 | "Create a new buffered reader using the given readable raw IO object."); |
| 1378 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1379 | static void _bufferedreader_reset_buf(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1380 | { |
| 1381 | self->read_end = -1; |
| 1382 | } |
| 1383 | |
| 1384 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1385 | bufferedreader_init(buffered *self, PyObject *args, PyObject *kwds) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1386 | { |
| 1387 | char *kwlist[] = {"raw", "buffer_size", NULL}; |
| 1388 | Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE; |
| 1389 | PyObject *raw; |
| 1390 | |
| 1391 | self->ok = 0; |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 1392 | self->detached = 0; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1393 | |
| 1394 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|n:BufferedReader", kwlist, |
| 1395 | &raw, &buffer_size)) { |
| 1396 | return -1; |
| 1397 | } |
| 1398 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1399 | if (_PyIOBase_check_readable(raw, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1400 | return -1; |
| 1401 | |
| 1402 | Py_CLEAR(self->raw); |
| 1403 | Py_INCREF(raw); |
| 1404 | self->raw = raw; |
| 1405 | self->buffer_size = buffer_size; |
| 1406 | self->readable = 1; |
| 1407 | self->writable = 0; |
| 1408 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1409 | if (_buffered_init(self) < 0) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1410 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1411 | _bufferedreader_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1412 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1413 | self->fast_closed_checks = (Py_TYPE(self) == &PyBufferedReader_Type && |
| 1414 | Py_TYPE(raw) == &PyFileIO_Type); |
| 1415 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1416 | self->ok = 1; |
| 1417 | return 0; |
| 1418 | } |
| 1419 | |
| 1420 | static Py_ssize_t |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1421 | _bufferedreader_raw_read(buffered *self, char *start, Py_ssize_t len) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1422 | { |
| 1423 | Py_buffer buf; |
| 1424 | PyObject *memobj, *res; |
| 1425 | Py_ssize_t n; |
| 1426 | /* NOTE: the buffer needn't be released as its object is NULL. */ |
| 1427 | if (PyBuffer_FillInfo(&buf, NULL, start, len, 0, PyBUF_CONTIG) == -1) |
| 1428 | return -1; |
| 1429 | memobj = PyMemoryView_FromBuffer(&buf); |
| 1430 | if (memobj == NULL) |
| 1431 | return -1; |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 1432 | /* NOTE: PyErr_SetFromErrno() calls PyErr_CheckSignals() when EINTR |
| 1433 | occurs so we needn't do it ourselves. |
| 1434 | We then retry reading, ignoring the signal if no handler has |
| 1435 | raised (see issue #10956). |
| 1436 | */ |
| 1437 | do { |
| 1438 | res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_readinto, memobj, NULL); |
Gregory P. Smith | 5135992 | 2012-06-23 23:55:39 -0700 | [diff] [blame] | 1439 | } while (res == NULL && _PyIO_trap_eintr()); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1440 | Py_DECREF(memobj); |
| 1441 | if (res == NULL) |
| 1442 | return -1; |
| 1443 | if (res == Py_None) { |
| 1444 | /* Non-blocking stream would have blocked. Special return code! */ |
| 1445 | Py_DECREF(res); |
| 1446 | return -2; |
| 1447 | } |
| 1448 | n = PyNumber_AsSsize_t(res, PyExc_ValueError); |
| 1449 | Py_DECREF(res); |
| 1450 | if (n < 0 || n > len) { |
| 1451 | PyErr_Format(PyExc_IOError, |
| 1452 | "raw readinto() returned invalid length %zd " |
| 1453 | "(should have been between 0 and %zd)", n, len); |
| 1454 | return -1; |
| 1455 | } |
| 1456 | if (n > 0 && self->abs_pos != -1) |
| 1457 | self->abs_pos += n; |
| 1458 | return n; |
| 1459 | } |
| 1460 | |
| 1461 | static Py_ssize_t |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1462 | _bufferedreader_fill_buffer(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1463 | { |
| 1464 | Py_ssize_t start, len, n; |
| 1465 | if (VALID_READ_BUFFER(self)) |
| 1466 | start = Py_SAFE_DOWNCAST(self->read_end, Py_off_t, Py_ssize_t); |
| 1467 | else |
| 1468 | start = 0; |
| 1469 | len = self->buffer_size - start; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1470 | n = _bufferedreader_raw_read(self, self->buffer + start, len); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1471 | if (n <= 0) |
| 1472 | return n; |
| 1473 | self->read_end = start + n; |
| 1474 | self->raw_pos = start + n; |
| 1475 | return n; |
| 1476 | } |
| 1477 | |
| 1478 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1479 | _bufferedreader_read_all(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1480 | { |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1481 | Py_ssize_t current_size; |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1482 | PyObject *res = NULL, *data = NULL, *tmp = NULL, *chunks = NULL; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1483 | |
| 1484 | /* First copy what we have in the current buffer. */ |
| 1485 | current_size = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 1486 | if (current_size) { |
| 1487 | data = PyBytes_FromStringAndSize( |
| 1488 | self->buffer + self->pos, current_size); |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1489 | if (data == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1490 | return NULL; |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1491 | self->pos += current_size; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1492 | } |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1493 | /* We're going past the buffer's bounds, flush it */ |
| 1494 | if (self->writable) { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1495 | tmp = buffered_flush_and_rewind_unlocked(self); |
| 1496 | if (tmp == NULL) |
| 1497 | goto cleanup; |
| 1498 | Py_CLEAR(tmp); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1499 | } |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1500 | _bufferedreader_reset_buf(self); |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1501 | |
| 1502 | if (PyObject_HasAttr(self->raw, _PyIO_str_readall)) { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1503 | tmp = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_readall, NULL); |
| 1504 | if (tmp == NULL) |
| 1505 | goto cleanup; |
| 1506 | if (tmp != Py_None && !PyBytes_Check(tmp)) { |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1507 | PyErr_SetString(PyExc_TypeError, "readall() should return bytes"); |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1508 | goto cleanup; |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1509 | } |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1510 | if (tmp == Py_None) { |
| 1511 | if (current_size == 0) { |
| 1512 | res = Py_None; |
| 1513 | goto cleanup; |
| 1514 | } else { |
| 1515 | res = data; |
| 1516 | goto cleanup; |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1517 | } |
| 1518 | } |
| 1519 | else if (current_size) { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1520 | PyBytes_Concat(&data, tmp); |
| 1521 | res = data; |
| 1522 | goto cleanup; |
| 1523 | } |
| 1524 | else { |
| 1525 | res = tmp; |
| 1526 | goto cleanup; |
| 1527 | } |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1528 | } |
| 1529 | |
| 1530 | chunks = PyList_New(0); |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1531 | if (chunks == NULL) |
| 1532 | goto cleanup; |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1533 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1534 | while (1) { |
| 1535 | if (data) { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1536 | if (PyList_Append(chunks, data) < 0) |
| 1537 | goto cleanup; |
| 1538 | Py_CLEAR(data); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1539 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1540 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1541 | /* Read until EOF or until read() would block. */ |
| 1542 | data = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_read, NULL); |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1543 | if (data == NULL) |
| 1544 | goto cleanup; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1545 | if (data != Py_None && !PyBytes_Check(data)) { |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1546 | PyErr_SetString(PyExc_TypeError, "read() should return bytes"); |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1547 | goto cleanup; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1548 | } |
| 1549 | if (data == Py_None || PyBytes_GET_SIZE(data) == 0) { |
| 1550 | if (current_size == 0) { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1551 | res = data; |
| 1552 | goto cleanup; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1553 | } |
| 1554 | else { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1555 | tmp = _PyBytes_Join(_PyIO_empty_bytes, chunks); |
| 1556 | res = tmp; |
| 1557 | goto cleanup; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1558 | } |
| 1559 | } |
| 1560 | current_size += PyBytes_GET_SIZE(data); |
| 1561 | if (self->abs_pos != -1) |
| 1562 | self->abs_pos += PyBytes_GET_SIZE(data); |
| 1563 | } |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1564 | cleanup: |
| 1565 | /* res is either NULL or a borrowed ref */ |
| 1566 | Py_XINCREF(res); |
| 1567 | Py_XDECREF(data); |
| 1568 | Py_XDECREF(tmp); |
| 1569 | Py_XDECREF(chunks); |
| 1570 | return res; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1571 | } |
| 1572 | |
| 1573 | /* Read n bytes from the buffer if it can, otherwise return None. |
| 1574 | This function is simple enough that it can run unlocked. */ |
| 1575 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1576 | _bufferedreader_read_fast(buffered *self, Py_ssize_t n) |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1577 | { |
| 1578 | Py_ssize_t current_size; |
| 1579 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1580 | current_size = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 1581 | if (n <= current_size) { |
| 1582 | /* Fast path: the data to read is fully buffered. */ |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1583 | PyObject *res = PyBytes_FromStringAndSize(self->buffer + self->pos, n); |
| 1584 | if (res != NULL) |
| 1585 | self->pos += n; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1586 | return res; |
| 1587 | } |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1588 | Py_RETURN_NONE; |
| 1589 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1590 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1591 | /* Generic read function: read from the stream until enough bytes are read, |
| 1592 | * or until an EOF occurs or until read() would block. |
| 1593 | */ |
| 1594 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1595 | _bufferedreader_read_generic(buffered *self, Py_ssize_t n) |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1596 | { |
| 1597 | PyObject *res = NULL; |
| 1598 | Py_ssize_t current_size, remaining, written; |
| 1599 | char *out; |
| 1600 | |
| 1601 | current_size = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 1602 | if (n <= current_size) |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1603 | return _bufferedreader_read_fast(self, n); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1604 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1605 | res = PyBytes_FromStringAndSize(NULL, n); |
| 1606 | if (res == NULL) |
| 1607 | goto error; |
| 1608 | out = PyBytes_AS_STRING(res); |
| 1609 | remaining = n; |
| 1610 | written = 0; |
| 1611 | if (current_size > 0) { |
| 1612 | memcpy(out, self->buffer + self->pos, current_size); |
| 1613 | remaining -= current_size; |
| 1614 | written += current_size; |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1615 | self->pos += current_size; |
| 1616 | } |
| 1617 | /* Flush the write buffer if necessary */ |
| 1618 | if (self->writable) { |
| 1619 | PyObject *r = buffered_flush_and_rewind_unlocked(self); |
| 1620 | if (r == NULL) |
| 1621 | goto error; |
| 1622 | Py_DECREF(r); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1623 | } |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1624 | _bufferedreader_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1625 | while (remaining > 0) { |
| 1626 | /* We want to read a whole block at the end into buffer. |
| 1627 | If we had readv() we could do this in one pass. */ |
| 1628 | Py_ssize_t r = MINUS_LAST_BLOCK(self, remaining); |
| 1629 | if (r == 0) |
| 1630 | break; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1631 | r = _bufferedreader_raw_read(self, out + written, r); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1632 | if (r == -1) |
| 1633 | goto error; |
| 1634 | if (r == 0 || r == -2) { |
| 1635 | /* EOF occurred or read() would block. */ |
| 1636 | if (r == 0 || written > 0) { |
| 1637 | if (_PyBytes_Resize(&res, written)) |
| 1638 | goto error; |
| 1639 | return res; |
| 1640 | } |
| 1641 | Py_DECREF(res); |
| 1642 | Py_INCREF(Py_None); |
| 1643 | return Py_None; |
| 1644 | } |
| 1645 | remaining -= r; |
| 1646 | written += r; |
| 1647 | } |
| 1648 | assert(remaining <= self->buffer_size); |
| 1649 | self->pos = 0; |
| 1650 | self->raw_pos = 0; |
| 1651 | self->read_end = 0; |
Antoine Pitrou | 32cfede | 2010-08-11 13:31:33 +0000 | [diff] [blame] | 1652 | /* NOTE: when the read is satisfied, we avoid issuing any additional |
| 1653 | reads, which could block indefinitely (e.g. on a socket). |
| 1654 | See issue #9550. */ |
| 1655 | while (remaining > 0 && self->read_end < self->buffer_size) { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1656 | Py_ssize_t r = _bufferedreader_fill_buffer(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1657 | if (r == -1) |
| 1658 | goto error; |
| 1659 | if (r == 0 || r == -2) { |
| 1660 | /* EOF occurred or read() would block. */ |
| 1661 | if (r == 0 || written > 0) { |
| 1662 | if (_PyBytes_Resize(&res, written)) |
| 1663 | goto error; |
| 1664 | return res; |
| 1665 | } |
| 1666 | Py_DECREF(res); |
| 1667 | Py_INCREF(Py_None); |
| 1668 | return Py_None; |
| 1669 | } |
| 1670 | if (remaining > r) { |
| 1671 | memcpy(out + written, self->buffer + self->pos, r); |
| 1672 | written += r; |
| 1673 | self->pos += r; |
| 1674 | remaining -= r; |
| 1675 | } |
| 1676 | else if (remaining > 0) { |
| 1677 | memcpy(out + written, self->buffer + self->pos, remaining); |
| 1678 | written += remaining; |
| 1679 | self->pos += remaining; |
| 1680 | remaining = 0; |
| 1681 | } |
| 1682 | if (remaining == 0) |
| 1683 | break; |
| 1684 | } |
| 1685 | |
| 1686 | return res; |
| 1687 | |
| 1688 | error: |
| 1689 | Py_XDECREF(res); |
| 1690 | return NULL; |
| 1691 | } |
| 1692 | |
| 1693 | static PyObject * |
Victor Stinner | bc93a11 | 2011-06-01 00:01:24 +0200 | [diff] [blame] | 1694 | _bufferedreader_peek_unlocked(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1695 | { |
| 1696 | Py_ssize_t have, r; |
| 1697 | |
| 1698 | have = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 1699 | /* Constraints: |
| 1700 | 1. we don't want to advance the file position. |
| 1701 | 2. we don't want to lose block alignment, so we can't shift the buffer |
| 1702 | to make some place. |
| 1703 | Therefore, we either return `have` bytes (if > 0), or a full buffer. |
| 1704 | */ |
| 1705 | if (have > 0) { |
| 1706 | return PyBytes_FromStringAndSize(self->buffer + self->pos, have); |
| 1707 | } |
| 1708 | |
| 1709 | /* Fill the buffer from the raw stream, and copy it to the result. */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1710 | _bufferedreader_reset_buf(self); |
| 1711 | r = _bufferedreader_fill_buffer(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1712 | if (r == -1) |
| 1713 | return NULL; |
| 1714 | if (r == -2) |
| 1715 | r = 0; |
| 1716 | self->pos = 0; |
| 1717 | return PyBytes_FromStringAndSize(self->buffer, r); |
| 1718 | } |
| 1719 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1720 | static PyMethodDef bufferedreader_methods[] = { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1721 | /* BufferedIOMixin methods */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1722 | {"detach", (PyCFunction)buffered_detach, METH_NOARGS}, |
| 1723 | {"flush", (PyCFunction)buffered_simple_flush, METH_NOARGS}, |
| 1724 | {"close", (PyCFunction)buffered_close, METH_NOARGS}, |
| 1725 | {"seekable", (PyCFunction)buffered_seekable, METH_NOARGS}, |
| 1726 | {"readable", (PyCFunction)buffered_readable, METH_NOARGS}, |
| 1727 | {"writable", (PyCFunction)buffered_writable, METH_NOARGS}, |
| 1728 | {"fileno", (PyCFunction)buffered_fileno, METH_NOARGS}, |
| 1729 | {"isatty", (PyCFunction)buffered_isatty, METH_NOARGS}, |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 1730 | {"_dealloc_warn", (PyCFunction)buffered_dealloc_warn, METH_O}, |
Antoine Pitrou | 243757e | 2010-11-05 21:15:39 +0000 | [diff] [blame] | 1731 | {"__getstate__", (PyCFunction)buffered_getstate, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1732 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1733 | {"read", (PyCFunction)buffered_read, METH_VARARGS}, |
| 1734 | {"peek", (PyCFunction)buffered_peek, METH_VARARGS}, |
| 1735 | {"read1", (PyCFunction)buffered_read1, METH_VARARGS}, |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1736 | {"readinto", (PyCFunction)buffered_readinto, METH_VARARGS}, |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1737 | {"readline", (PyCFunction)buffered_readline, METH_VARARGS}, |
| 1738 | {"seek", (PyCFunction)buffered_seek, METH_VARARGS}, |
| 1739 | {"tell", (PyCFunction)buffered_tell, METH_NOARGS}, |
| 1740 | {"truncate", (PyCFunction)buffered_truncate, METH_VARARGS}, |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 1741 | {"__sizeof__", (PyCFunction)buffered_sizeof, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1742 | {NULL, NULL} |
| 1743 | }; |
| 1744 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1745 | static PyMemberDef bufferedreader_members[] = { |
Antoine Pitrou | 7f8f418 | 2010-12-21 21:20:59 +0000 | [diff] [blame] | 1746 | {"raw", T_OBJECT, offsetof(buffered, raw), READONLY}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1747 | {NULL} |
| 1748 | }; |
| 1749 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1750 | static PyGetSetDef bufferedreader_getset[] = { |
| 1751 | {"closed", (getter)buffered_closed_get, NULL, NULL}, |
| 1752 | {"name", (getter)buffered_name_get, NULL, NULL}, |
| 1753 | {"mode", (getter)buffered_mode_get, NULL, NULL}, |
Benjamin Peterson | 1fea321 | 2009-04-19 03:15:20 +0000 | [diff] [blame] | 1754 | {NULL} |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1755 | }; |
| 1756 | |
| 1757 | |
| 1758 | PyTypeObject PyBufferedReader_Type = { |
| 1759 | PyVarObject_HEAD_INIT(NULL, 0) |
| 1760 | "_io.BufferedReader", /*tp_name*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1761 | sizeof(buffered), /*tp_basicsize*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1762 | 0, /*tp_itemsize*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1763 | (destructor)buffered_dealloc, /*tp_dealloc*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1764 | 0, /*tp_print*/ |
| 1765 | 0, /*tp_getattr*/ |
| 1766 | 0, /*tp_setattr*/ |
| 1767 | 0, /*tp_compare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1768 | (reprfunc)buffered_repr, /*tp_repr*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1769 | 0, /*tp_as_number*/ |
| 1770 | 0, /*tp_as_sequence*/ |
| 1771 | 0, /*tp_as_mapping*/ |
| 1772 | 0, /*tp_hash */ |
| 1773 | 0, /*tp_call*/ |
| 1774 | 0, /*tp_str*/ |
| 1775 | 0, /*tp_getattro*/ |
| 1776 | 0, /*tp_setattro*/ |
| 1777 | 0, /*tp_as_buffer*/ |
| 1778 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
| 1779 | | Py_TPFLAGS_HAVE_GC, /*tp_flags*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1780 | bufferedreader_doc, /* tp_doc */ |
| 1781 | (traverseproc)buffered_traverse, /* tp_traverse */ |
| 1782 | (inquiry)buffered_clear, /* tp_clear */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1783 | 0, /* tp_richcompare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1784 | offsetof(buffered, weakreflist), /*tp_weaklistoffset*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1785 | 0, /* tp_iter */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1786 | (iternextfunc)buffered_iternext, /* tp_iternext */ |
| 1787 | bufferedreader_methods, /* tp_methods */ |
| 1788 | bufferedreader_members, /* tp_members */ |
| 1789 | bufferedreader_getset, /* tp_getset */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1790 | 0, /* tp_base */ |
| 1791 | 0, /* tp_dict */ |
| 1792 | 0, /* tp_descr_get */ |
| 1793 | 0, /* tp_descr_set */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1794 | offsetof(buffered, dict), /* tp_dictoffset */ |
| 1795 | (initproc)bufferedreader_init, /* tp_init */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1796 | 0, /* tp_alloc */ |
| 1797 | PyType_GenericNew, /* tp_new */ |
| 1798 | }; |
| 1799 | |
| 1800 | |
Benjamin Peterson | 59406a9 | 2009-03-26 17:10:29 +0000 | [diff] [blame] | 1801 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1802 | /* |
| 1803 | * class BufferedWriter |
| 1804 | */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1805 | PyDoc_STRVAR(bufferedwriter_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1806 | "A buffer for a writeable sequential RawIO object.\n" |
| 1807 | "\n" |
| 1808 | "The constructor creates a BufferedWriter for the given writeable raw\n" |
| 1809 | "stream. If the buffer_size is not given, it defaults to\n" |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 1810 | "DEFAULT_BUFFER_SIZE.\n" |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1811 | ); |
| 1812 | |
| 1813 | static void |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1814 | _bufferedwriter_reset_buf(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1815 | { |
| 1816 | self->write_pos = 0; |
| 1817 | self->write_end = -1; |
| 1818 | } |
| 1819 | |
| 1820 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1821 | bufferedwriter_init(buffered *self, PyObject *args, PyObject *kwds) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1822 | { |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 1823 | char *kwlist[] = {"raw", "buffer_size", NULL}; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1824 | Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1825 | PyObject *raw; |
| 1826 | |
| 1827 | self->ok = 0; |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 1828 | self->detached = 0; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1829 | |
R David Murray | 9f10f56 | 2013-02-23 22:07:55 -0500 | [diff] [blame] | 1830 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|n:BufferedWriter", kwlist, |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 1831 | &raw, &buffer_size)) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1832 | return -1; |
| 1833 | } |
| 1834 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1835 | if (_PyIOBase_check_writable(raw, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1836 | return -1; |
| 1837 | |
| 1838 | Py_CLEAR(self->raw); |
| 1839 | Py_INCREF(raw); |
| 1840 | self->raw = raw; |
| 1841 | self->readable = 0; |
| 1842 | self->writable = 1; |
| 1843 | |
| 1844 | self->buffer_size = buffer_size; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1845 | if (_buffered_init(self) < 0) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1846 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1847 | _bufferedwriter_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1848 | self->pos = 0; |
| 1849 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1850 | self->fast_closed_checks = (Py_TYPE(self) == &PyBufferedWriter_Type && |
| 1851 | Py_TYPE(raw) == &PyFileIO_Type); |
| 1852 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1853 | self->ok = 1; |
| 1854 | return 0; |
| 1855 | } |
| 1856 | |
| 1857 | static Py_ssize_t |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1858 | _bufferedwriter_raw_write(buffered *self, char *start, Py_ssize_t len) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1859 | { |
| 1860 | Py_buffer buf; |
| 1861 | PyObject *memobj, *res; |
| 1862 | Py_ssize_t n; |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1863 | int errnum; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1864 | /* NOTE: the buffer needn't be released as its object is NULL. */ |
| 1865 | if (PyBuffer_FillInfo(&buf, NULL, start, len, 1, PyBUF_CONTIG_RO) == -1) |
| 1866 | return -1; |
| 1867 | memobj = PyMemoryView_FromBuffer(&buf); |
| 1868 | if (memobj == NULL) |
| 1869 | return -1; |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 1870 | /* NOTE: PyErr_SetFromErrno() calls PyErr_CheckSignals() when EINTR |
| 1871 | occurs so we needn't do it ourselves. |
| 1872 | We then retry writing, ignoring the signal if no handler has |
| 1873 | raised (see issue #10956). |
| 1874 | */ |
| 1875 | do { |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1876 | errno = 0; |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 1877 | res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_write, memobj, NULL); |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1878 | errnum = errno; |
Gregory P. Smith | 5135992 | 2012-06-23 23:55:39 -0700 | [diff] [blame] | 1879 | } while (res == NULL && _PyIO_trap_eintr()); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1880 | Py_DECREF(memobj); |
| 1881 | if (res == NULL) |
| 1882 | return -1; |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1883 | if (res == Py_None) { |
| 1884 | /* Non-blocking stream would have blocked. Special return code! |
| 1885 | Being paranoid we reset errno in case it is changed by code |
| 1886 | triggered by a decref. errno is used by _set_BlockingIOError(). */ |
| 1887 | Py_DECREF(res); |
| 1888 | errno = errnum; |
| 1889 | return -2; |
| 1890 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1891 | n = PyNumber_AsSsize_t(res, PyExc_ValueError); |
| 1892 | Py_DECREF(res); |
| 1893 | if (n < 0 || n > len) { |
| 1894 | PyErr_Format(PyExc_IOError, |
| 1895 | "raw write() returned invalid length %zd " |
| 1896 | "(should have been between 0 and %zd)", n, len); |
| 1897 | return -1; |
| 1898 | } |
| 1899 | if (n > 0 && self->abs_pos != -1) |
| 1900 | self->abs_pos += n; |
| 1901 | return n; |
| 1902 | } |
| 1903 | |
| 1904 | /* `restore_pos` is 1 if we need to restore the raw stream position at |
| 1905 | the end, 0 otherwise. */ |
| 1906 | static PyObject * |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1907 | _bufferedwriter_flush_unlocked(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1908 | { |
| 1909 | Py_ssize_t written = 0; |
| 1910 | Py_off_t n, rewind; |
| 1911 | |
| 1912 | if (!VALID_WRITE_BUFFER(self) || self->write_pos == self->write_end) |
| 1913 | goto end; |
| 1914 | /* First, rewind */ |
| 1915 | rewind = RAW_OFFSET(self) + (self->pos - self->write_pos); |
| 1916 | if (rewind != 0) { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1917 | n = _buffered_raw_seek(self, -rewind, 1); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1918 | if (n < 0) { |
| 1919 | goto error; |
| 1920 | } |
| 1921 | self->raw_pos -= rewind; |
| 1922 | } |
| 1923 | while (self->write_pos < self->write_end) { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1924 | n = _bufferedwriter_raw_write(self, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1925 | self->buffer + self->write_pos, |
| 1926 | Py_SAFE_DOWNCAST(self->write_end - self->write_pos, |
| 1927 | Py_off_t, Py_ssize_t)); |
| 1928 | if (n == -1) { |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1929 | goto error; |
| 1930 | } |
| 1931 | else if (n == -2) { |
| 1932 | _set_BlockingIOError("write could not complete without blocking", |
| 1933 | 0); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1934 | goto error; |
| 1935 | } |
| 1936 | self->write_pos += n; |
| 1937 | self->raw_pos = self->write_pos; |
| 1938 | written += Py_SAFE_DOWNCAST(n, Py_off_t, Py_ssize_t); |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 1939 | /* Partial writes can return successfully when interrupted by a |
| 1940 | signal (see write(2)). We must run signal handlers before |
| 1941 | blocking another time, possibly indefinitely. */ |
| 1942 | if (PyErr_CheckSignals() < 0) |
| 1943 | goto error; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1944 | } |
| 1945 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1946 | _bufferedwriter_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1947 | |
| 1948 | end: |
| 1949 | Py_RETURN_NONE; |
| 1950 | |
| 1951 | error: |
| 1952 | return NULL; |
| 1953 | } |
| 1954 | |
| 1955 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1956 | bufferedwriter_write(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1957 | { |
| 1958 | PyObject *res = NULL; |
| 1959 | Py_buffer buf; |
Amaury Forgeot d'Arc | e1b60d4 | 2009-10-05 21:09:00 +0000 | [diff] [blame] | 1960 | Py_ssize_t written, avail, remaining; |
| 1961 | Py_off_t offset; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1962 | |
| 1963 | CHECK_INITIALIZED(self) |
| 1964 | if (!PyArg_ParseTuple(args, "y*:write", &buf)) { |
| 1965 | return NULL; |
| 1966 | } |
| 1967 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1968 | if (IS_CLOSED(self)) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1969 | PyErr_SetString(PyExc_ValueError, "write to closed file"); |
| 1970 | PyBuffer_Release(&buf); |
| 1971 | return NULL; |
| 1972 | } |
| 1973 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 1974 | if (!ENTER_BUFFERED(self)) { |
| 1975 | PyBuffer_Release(&buf); |
| 1976 | return NULL; |
| 1977 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1978 | |
| 1979 | /* Fast path: the data to write can be fully buffered. */ |
| 1980 | if (!VALID_READ_BUFFER(self) && !VALID_WRITE_BUFFER(self)) { |
| 1981 | self->pos = 0; |
| 1982 | self->raw_pos = 0; |
| 1983 | } |
| 1984 | avail = Py_SAFE_DOWNCAST(self->buffer_size - self->pos, Py_off_t, Py_ssize_t); |
| 1985 | if (buf.len <= avail) { |
| 1986 | memcpy(self->buffer + self->pos, buf.buf, buf.len); |
Antoine Pitrou | 7c40489 | 2011-05-13 00:13:33 +0200 | [diff] [blame] | 1987 | if (!VALID_WRITE_BUFFER(self) || self->write_pos > self->pos) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1988 | self->write_pos = self->pos; |
| 1989 | } |
| 1990 | ADJUST_POSITION(self, self->pos + buf.len); |
| 1991 | if (self->pos > self->write_end) |
| 1992 | self->write_end = self->pos; |
| 1993 | written = buf.len; |
| 1994 | goto end; |
| 1995 | } |
| 1996 | |
| 1997 | /* First write the current buffer */ |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1998 | res = _bufferedwriter_flush_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1999 | if (res == NULL) { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2000 | Py_ssize_t *w = _buffered_check_blocking_error(); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2001 | if (w == NULL) |
| 2002 | goto error; |
| 2003 | if (self->readable) |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2004 | _bufferedreader_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2005 | /* Make some place by shifting the buffer. */ |
| 2006 | assert(VALID_WRITE_BUFFER(self)); |
| 2007 | memmove(self->buffer, self->buffer + self->write_pos, |
| 2008 | Py_SAFE_DOWNCAST(self->write_end - self->write_pos, |
| 2009 | Py_off_t, Py_ssize_t)); |
| 2010 | self->write_end -= self->write_pos; |
| 2011 | self->raw_pos -= self->write_pos; |
| 2012 | self->pos -= self->write_pos; |
| 2013 | self->write_pos = 0; |
| 2014 | avail = Py_SAFE_DOWNCAST(self->buffer_size - self->write_end, |
| 2015 | Py_off_t, Py_ssize_t); |
| 2016 | if (buf.len <= avail) { |
| 2017 | /* Everything can be buffered */ |
| 2018 | PyErr_Clear(); |
| 2019 | memcpy(self->buffer + self->write_end, buf.buf, buf.len); |
| 2020 | self->write_end += buf.len; |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 2021 | self->pos += buf.len; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2022 | written = buf.len; |
| 2023 | goto end; |
| 2024 | } |
| 2025 | /* Buffer as much as possible. */ |
| 2026 | memcpy(self->buffer + self->write_end, buf.buf, avail); |
| 2027 | self->write_end += avail; |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 2028 | self->pos += avail; |
| 2029 | /* XXX Modifying the existing exception e using the pointer w |
| 2030 | will change e.characters_written but not e.args[2]. |
| 2031 | Therefore we just replace with a new error. */ |
| 2032 | _set_BlockingIOError("write could not complete without blocking", |
| 2033 | avail); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2034 | goto error; |
| 2035 | } |
| 2036 | Py_CLEAR(res); |
| 2037 | |
Antoine Pitrou | a0ceb73 | 2009-08-06 20:29:56 +0000 | [diff] [blame] | 2038 | /* Adjust the raw stream position if it is away from the logical stream |
| 2039 | position. This happens if the read buffer has been filled but not |
| 2040 | modified (and therefore _bufferedwriter_flush_unlocked() didn't rewind |
| 2041 | the raw stream by itself). |
| 2042 | Fixes issue #6629. |
| 2043 | */ |
Amaury Forgeot d'Arc | e1b60d4 | 2009-10-05 21:09:00 +0000 | [diff] [blame] | 2044 | offset = RAW_OFFSET(self); |
| 2045 | if (offset != 0) { |
| 2046 | if (_buffered_raw_seek(self, -offset, 1) < 0) |
Antoine Pitrou | a0ceb73 | 2009-08-06 20:29:56 +0000 | [diff] [blame] | 2047 | goto error; |
Amaury Forgeot d'Arc | e1b60d4 | 2009-10-05 21:09:00 +0000 | [diff] [blame] | 2048 | self->raw_pos -= offset; |
Antoine Pitrou | a0ceb73 | 2009-08-06 20:29:56 +0000 | [diff] [blame] | 2049 | } |
| 2050 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2051 | /* Then write buf itself. At this point the buffer has been emptied. */ |
| 2052 | remaining = buf.len; |
| 2053 | written = 0; |
| 2054 | while (remaining > self->buffer_size) { |
Amaury Forgeot d'Arc | e1b60d4 | 2009-10-05 21:09:00 +0000 | [diff] [blame] | 2055 | Py_ssize_t n = _bufferedwriter_raw_write( |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2056 | self, (char *) buf.buf + written, buf.len - written); |
| 2057 | if (n == -1) { |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 2058 | goto error; |
| 2059 | } else if (n == -2) { |
| 2060 | /* Write failed because raw file is non-blocking */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2061 | if (remaining > self->buffer_size) { |
| 2062 | /* Can't buffer everything, still buffer as much as possible */ |
| 2063 | memcpy(self->buffer, |
| 2064 | (char *) buf.buf + written, self->buffer_size); |
| 2065 | self->raw_pos = 0; |
| 2066 | ADJUST_POSITION(self, self->buffer_size); |
| 2067 | self->write_end = self->buffer_size; |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 2068 | written += self->buffer_size; |
| 2069 | _set_BlockingIOError("write could not complete without " |
| 2070 | "blocking", written); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2071 | goto error; |
| 2072 | } |
| 2073 | PyErr_Clear(); |
| 2074 | break; |
| 2075 | } |
| 2076 | written += n; |
| 2077 | remaining -= n; |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 2078 | /* Partial writes can return successfully when interrupted by a |
| 2079 | signal (see write(2)). We must run signal handlers before |
| 2080 | blocking another time, possibly indefinitely. */ |
| 2081 | if (PyErr_CheckSignals() < 0) |
| 2082 | goto error; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2083 | } |
| 2084 | if (self->readable) |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2085 | _bufferedreader_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2086 | if (remaining > 0) { |
| 2087 | memcpy(self->buffer, (char *) buf.buf + written, remaining); |
| 2088 | written += remaining; |
| 2089 | } |
| 2090 | self->write_pos = 0; |
| 2091 | /* TODO: sanity check (remaining >= 0) */ |
| 2092 | self->write_end = remaining; |
| 2093 | ADJUST_POSITION(self, remaining); |
| 2094 | self->raw_pos = 0; |
| 2095 | |
| 2096 | end: |
| 2097 | res = PyLong_FromSsize_t(written); |
| 2098 | |
| 2099 | error: |
| 2100 | LEAVE_BUFFERED(self) |
| 2101 | PyBuffer_Release(&buf); |
| 2102 | return res; |
| 2103 | } |
| 2104 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2105 | static PyMethodDef bufferedwriter_methods[] = { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2106 | /* BufferedIOMixin methods */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2107 | {"close", (PyCFunction)buffered_close, METH_NOARGS}, |
| 2108 | {"detach", (PyCFunction)buffered_detach, METH_NOARGS}, |
| 2109 | {"seekable", (PyCFunction)buffered_seekable, METH_NOARGS}, |
| 2110 | {"readable", (PyCFunction)buffered_readable, METH_NOARGS}, |
| 2111 | {"writable", (PyCFunction)buffered_writable, METH_NOARGS}, |
| 2112 | {"fileno", (PyCFunction)buffered_fileno, METH_NOARGS}, |
| 2113 | {"isatty", (PyCFunction)buffered_isatty, METH_NOARGS}, |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 2114 | {"_dealloc_warn", (PyCFunction)buffered_dealloc_warn, METH_O}, |
Antoine Pitrou | 243757e | 2010-11-05 21:15:39 +0000 | [diff] [blame] | 2115 | {"__getstate__", (PyCFunction)buffered_getstate, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2116 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2117 | {"write", (PyCFunction)bufferedwriter_write, METH_VARARGS}, |
| 2118 | {"truncate", (PyCFunction)buffered_truncate, METH_VARARGS}, |
| 2119 | {"flush", (PyCFunction)buffered_flush, METH_NOARGS}, |
| 2120 | {"seek", (PyCFunction)buffered_seek, METH_VARARGS}, |
| 2121 | {"tell", (PyCFunction)buffered_tell, METH_NOARGS}, |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 2122 | {"__sizeof__", (PyCFunction)buffered_sizeof, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2123 | {NULL, NULL} |
| 2124 | }; |
| 2125 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2126 | static PyMemberDef bufferedwriter_members[] = { |
Antoine Pitrou | 7f8f418 | 2010-12-21 21:20:59 +0000 | [diff] [blame] | 2127 | {"raw", T_OBJECT, offsetof(buffered, raw), READONLY}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2128 | {NULL} |
| 2129 | }; |
| 2130 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2131 | static PyGetSetDef bufferedwriter_getset[] = { |
| 2132 | {"closed", (getter)buffered_closed_get, NULL, NULL}, |
| 2133 | {"name", (getter)buffered_name_get, NULL, NULL}, |
| 2134 | {"mode", (getter)buffered_mode_get, NULL, NULL}, |
Benjamin Peterson | 1fea321 | 2009-04-19 03:15:20 +0000 | [diff] [blame] | 2135 | {NULL} |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2136 | }; |
| 2137 | |
| 2138 | |
| 2139 | PyTypeObject PyBufferedWriter_Type = { |
| 2140 | PyVarObject_HEAD_INIT(NULL, 0) |
| 2141 | "_io.BufferedWriter", /*tp_name*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2142 | sizeof(buffered), /*tp_basicsize*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2143 | 0, /*tp_itemsize*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2144 | (destructor)buffered_dealloc, /*tp_dealloc*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2145 | 0, /*tp_print*/ |
| 2146 | 0, /*tp_getattr*/ |
| 2147 | 0, /*tp_setattr*/ |
| 2148 | 0, /*tp_compare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2149 | (reprfunc)buffered_repr, /*tp_repr*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2150 | 0, /*tp_as_number*/ |
| 2151 | 0, /*tp_as_sequence*/ |
| 2152 | 0, /*tp_as_mapping*/ |
| 2153 | 0, /*tp_hash */ |
| 2154 | 0, /*tp_call*/ |
| 2155 | 0, /*tp_str*/ |
| 2156 | 0, /*tp_getattro*/ |
| 2157 | 0, /*tp_setattro*/ |
| 2158 | 0, /*tp_as_buffer*/ |
| 2159 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
| 2160 | | Py_TPFLAGS_HAVE_GC, /*tp_flags*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2161 | bufferedwriter_doc, /* tp_doc */ |
| 2162 | (traverseproc)buffered_traverse, /* tp_traverse */ |
| 2163 | (inquiry)buffered_clear, /* tp_clear */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2164 | 0, /* tp_richcompare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2165 | offsetof(buffered, weakreflist), /*tp_weaklistoffset*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2166 | 0, /* tp_iter */ |
| 2167 | 0, /* tp_iternext */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2168 | bufferedwriter_methods, /* tp_methods */ |
| 2169 | bufferedwriter_members, /* tp_members */ |
| 2170 | bufferedwriter_getset, /* tp_getset */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2171 | 0, /* tp_base */ |
| 2172 | 0, /* tp_dict */ |
| 2173 | 0, /* tp_descr_get */ |
| 2174 | 0, /* tp_descr_set */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2175 | offsetof(buffered, dict), /* tp_dictoffset */ |
| 2176 | (initproc)bufferedwriter_init, /* tp_init */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2177 | 0, /* tp_alloc */ |
| 2178 | PyType_GenericNew, /* tp_new */ |
| 2179 | }; |
| 2180 | |
| 2181 | |
| 2182 | |
| 2183 | /* |
| 2184 | * BufferedRWPair |
| 2185 | */ |
| 2186 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2187 | PyDoc_STRVAR(bufferedrwpair_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2188 | "A buffered reader and writer object together.\n" |
| 2189 | "\n" |
| 2190 | "A buffered reader object and buffered writer object put together to\n" |
| 2191 | "form a sequential IO object that can read and write. This is typically\n" |
| 2192 | "used with a socket or two-way pipe.\n" |
| 2193 | "\n" |
| 2194 | "reader and writer are RawIOBase objects that are readable and\n" |
| 2195 | "writeable respectively. If the buffer_size is omitted it defaults to\n" |
Benjamin Peterson | 59406a9 | 2009-03-26 17:10:29 +0000 | [diff] [blame] | 2196 | "DEFAULT_BUFFER_SIZE.\n" |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2197 | ); |
| 2198 | |
| 2199 | /* XXX The usefulness of this (compared to having two separate IO objects) is |
| 2200 | * questionable. |
| 2201 | */ |
| 2202 | |
| 2203 | typedef struct { |
| 2204 | PyObject_HEAD |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2205 | buffered *reader; |
| 2206 | buffered *writer; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2207 | PyObject *dict; |
| 2208 | PyObject *weakreflist; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2209 | } rwpair; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2210 | |
| 2211 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2212 | bufferedrwpair_init(rwpair *self, PyObject *args, PyObject *kwds) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2213 | { |
| 2214 | PyObject *reader, *writer; |
| 2215 | Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2216 | |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 2217 | if (!PyArg_ParseTuple(args, "OO|n:BufferedRWPair", &reader, &writer, |
| 2218 | &buffer_size)) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2219 | return -1; |
| 2220 | } |
| 2221 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2222 | if (_PyIOBase_check_readable(reader, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2223 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2224 | if (_PyIOBase_check_writable(writer, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2225 | return -1; |
| 2226 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2227 | self->reader = (buffered *) PyObject_CallFunction( |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2228 | (PyObject *) &PyBufferedReader_Type, "On", reader, buffer_size); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2229 | if (self->reader == NULL) |
| 2230 | return -1; |
| 2231 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2232 | self->writer = (buffered *) PyObject_CallFunction( |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2233 | (PyObject *) &PyBufferedWriter_Type, "On", writer, buffer_size); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2234 | if (self->writer == NULL) { |
| 2235 | Py_CLEAR(self->reader); |
| 2236 | return -1; |
| 2237 | } |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2238 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2239 | return 0; |
| 2240 | } |
| 2241 | |
| 2242 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2243 | bufferedrwpair_traverse(rwpair *self, visitproc visit, void *arg) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2244 | { |
| 2245 | Py_VISIT(self->dict); |
| 2246 | return 0; |
| 2247 | } |
| 2248 | |
| 2249 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2250 | bufferedrwpair_clear(rwpair *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2251 | { |
| 2252 | Py_CLEAR(self->reader); |
| 2253 | Py_CLEAR(self->writer); |
| 2254 | Py_CLEAR(self->dict); |
| 2255 | return 0; |
| 2256 | } |
| 2257 | |
| 2258 | static void |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2259 | bufferedrwpair_dealloc(rwpair *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2260 | { |
| 2261 | _PyObject_GC_UNTRACK(self); |
| 2262 | Py_CLEAR(self->reader); |
| 2263 | Py_CLEAR(self->writer); |
| 2264 | Py_CLEAR(self->dict); |
| 2265 | Py_TYPE(self)->tp_free((PyObject *) self); |
| 2266 | } |
| 2267 | |
| 2268 | static PyObject * |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2269 | _forward_call(buffered *self, _Py_Identifier *name, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2270 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2271 | PyObject *func = _PyObject_GetAttrId((PyObject *)self, name); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2272 | PyObject *ret; |
| 2273 | |
| 2274 | if (func == NULL) { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2275 | PyErr_SetString(PyExc_AttributeError, name->string); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2276 | return NULL; |
| 2277 | } |
| 2278 | |
| 2279 | ret = PyObject_CallObject(func, args); |
| 2280 | Py_DECREF(func); |
| 2281 | return ret; |
| 2282 | } |
| 2283 | |
| 2284 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2285 | bufferedrwpair_read(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2286 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2287 | return _forward_call(self->reader, &PyId_read, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2288 | } |
| 2289 | |
| 2290 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2291 | bufferedrwpair_peek(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2292 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2293 | return _forward_call(self->reader, &PyId_peek, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2294 | } |
| 2295 | |
| 2296 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2297 | bufferedrwpair_read1(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2298 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2299 | return _forward_call(self->reader, &PyId_read1, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2300 | } |
| 2301 | |
| 2302 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2303 | bufferedrwpair_readinto(rwpair *self, PyObject *args) |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2304 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2305 | return _forward_call(self->reader, &PyId_readinto, args); |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2306 | } |
| 2307 | |
| 2308 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2309 | bufferedrwpair_write(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2310 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2311 | return _forward_call(self->writer, &PyId_write, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2312 | } |
| 2313 | |
| 2314 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2315 | bufferedrwpair_flush(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2316 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2317 | return _forward_call(self->writer, &PyId_flush, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2318 | } |
| 2319 | |
| 2320 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2321 | bufferedrwpair_readable(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2322 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2323 | return _forward_call(self->reader, &PyId_readable, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2324 | } |
| 2325 | |
| 2326 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2327 | bufferedrwpair_writable(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2328 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2329 | return _forward_call(self->writer, &PyId_writable, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2330 | } |
| 2331 | |
| 2332 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2333 | bufferedrwpair_close(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2334 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2335 | PyObject *ret = _forward_call(self->writer, &PyId_close, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2336 | if (ret == NULL) |
| 2337 | return NULL; |
| 2338 | Py_DECREF(ret); |
| 2339 | |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2340 | return _forward_call(self->reader, &PyId_close, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2341 | } |
| 2342 | |
| 2343 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2344 | bufferedrwpair_isatty(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2345 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2346 | PyObject *ret = _forward_call(self->writer, &PyId_isatty, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2347 | |
| 2348 | if (ret != Py_False) { |
| 2349 | /* either True or exception */ |
| 2350 | return ret; |
| 2351 | } |
| 2352 | Py_DECREF(ret); |
| 2353 | |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2354 | return _forward_call(self->reader, &PyId_isatty, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2355 | } |
| 2356 | |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2357 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2358 | bufferedrwpair_closed_get(rwpair *self, void *context) |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2359 | { |
Charles-François Natali | 42c28cd | 2011-10-05 19:53:43 +0200 | [diff] [blame] | 2360 | if (self->writer == NULL) { |
| 2361 | PyErr_SetString(PyExc_RuntimeError, |
| 2362 | "the BufferedRWPair object is being garbage-collected"); |
| 2363 | return NULL; |
| 2364 | } |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2365 | return PyObject_GetAttr((PyObject *) self->writer, _PyIO_str_closed); |
| 2366 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2367 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2368 | static PyMethodDef bufferedrwpair_methods[] = { |
| 2369 | {"read", (PyCFunction)bufferedrwpair_read, METH_VARARGS}, |
| 2370 | {"peek", (PyCFunction)bufferedrwpair_peek, METH_VARARGS}, |
| 2371 | {"read1", (PyCFunction)bufferedrwpair_read1, METH_VARARGS}, |
| 2372 | {"readinto", (PyCFunction)bufferedrwpair_readinto, METH_VARARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2373 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2374 | {"write", (PyCFunction)bufferedrwpair_write, METH_VARARGS}, |
| 2375 | {"flush", (PyCFunction)bufferedrwpair_flush, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2376 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2377 | {"readable", (PyCFunction)bufferedrwpair_readable, METH_NOARGS}, |
| 2378 | {"writable", (PyCFunction)bufferedrwpair_writable, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2379 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2380 | {"close", (PyCFunction)bufferedrwpair_close, METH_NOARGS}, |
| 2381 | {"isatty", (PyCFunction)bufferedrwpair_isatty, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2382 | |
Antoine Pitrou | 243757e | 2010-11-05 21:15:39 +0000 | [diff] [blame] | 2383 | {"__getstate__", (PyCFunction)buffered_getstate, METH_NOARGS}, |
| 2384 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2385 | {NULL, NULL} |
| 2386 | }; |
| 2387 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2388 | static PyGetSetDef bufferedrwpair_getset[] = { |
| 2389 | {"closed", (getter)bufferedrwpair_closed_get, NULL, NULL}, |
Benjamin Peterson | 1fea321 | 2009-04-19 03:15:20 +0000 | [diff] [blame] | 2390 | {NULL} |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2391 | }; |
| 2392 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2393 | PyTypeObject PyBufferedRWPair_Type = { |
| 2394 | PyVarObject_HEAD_INIT(NULL, 0) |
| 2395 | "_io.BufferedRWPair", /*tp_name*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2396 | sizeof(rwpair), /*tp_basicsize*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2397 | 0, /*tp_itemsize*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2398 | (destructor)bufferedrwpair_dealloc, /*tp_dealloc*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2399 | 0, /*tp_print*/ |
| 2400 | 0, /*tp_getattr*/ |
| 2401 | 0, /*tp_setattr*/ |
| 2402 | 0, /*tp_compare */ |
| 2403 | 0, /*tp_repr*/ |
| 2404 | 0, /*tp_as_number*/ |
| 2405 | 0, /*tp_as_sequence*/ |
| 2406 | 0, /*tp_as_mapping*/ |
| 2407 | 0, /*tp_hash */ |
| 2408 | 0, /*tp_call*/ |
| 2409 | 0, /*tp_str*/ |
| 2410 | 0, /*tp_getattro*/ |
| 2411 | 0, /*tp_setattro*/ |
| 2412 | 0, /*tp_as_buffer*/ |
| 2413 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
| 2414 | | Py_TPFLAGS_HAVE_GC, /* tp_flags */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2415 | bufferedrwpair_doc, /* tp_doc */ |
| 2416 | (traverseproc)bufferedrwpair_traverse, /* tp_traverse */ |
| 2417 | (inquiry)bufferedrwpair_clear, /* tp_clear */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2418 | 0, /* tp_richcompare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2419 | offsetof(rwpair, weakreflist), /*tp_weaklistoffset*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2420 | 0, /* tp_iter */ |
| 2421 | 0, /* tp_iternext */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2422 | bufferedrwpair_methods, /* tp_methods */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2423 | 0, /* tp_members */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2424 | bufferedrwpair_getset, /* tp_getset */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2425 | 0, /* tp_base */ |
| 2426 | 0, /* tp_dict */ |
| 2427 | 0, /* tp_descr_get */ |
| 2428 | 0, /* tp_descr_set */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2429 | offsetof(rwpair, dict), /* tp_dictoffset */ |
| 2430 | (initproc)bufferedrwpair_init, /* tp_init */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2431 | 0, /* tp_alloc */ |
| 2432 | PyType_GenericNew, /* tp_new */ |
| 2433 | }; |
| 2434 | |
| 2435 | |
| 2436 | |
| 2437 | /* |
| 2438 | * BufferedRandom |
| 2439 | */ |
| 2440 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2441 | PyDoc_STRVAR(bufferedrandom_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2442 | "A buffered interface to random access streams.\n" |
| 2443 | "\n" |
| 2444 | "The constructor creates a reader and writer for a seekable stream,\n" |
| 2445 | "raw, given in the first argument. If the buffer_size is omitted it\n" |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 2446 | "defaults to DEFAULT_BUFFER_SIZE.\n" |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2447 | ); |
| 2448 | |
| 2449 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2450 | bufferedrandom_init(buffered *self, PyObject *args, PyObject *kwds) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2451 | { |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 2452 | char *kwlist[] = {"raw", "buffer_size", NULL}; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2453 | Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2454 | PyObject *raw; |
| 2455 | |
| 2456 | self->ok = 0; |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 2457 | self->detached = 0; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2458 | |
R David Murray | 9f10f56 | 2013-02-23 22:07:55 -0500 | [diff] [blame] | 2459 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|n:BufferedRandom", kwlist, |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 2460 | &raw, &buffer_size)) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2461 | return -1; |
| 2462 | } |
| 2463 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2464 | if (_PyIOBase_check_seekable(raw, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2465 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2466 | if (_PyIOBase_check_readable(raw, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2467 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2468 | if (_PyIOBase_check_writable(raw, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2469 | return -1; |
| 2470 | |
| 2471 | Py_CLEAR(self->raw); |
| 2472 | Py_INCREF(raw); |
| 2473 | self->raw = raw; |
| 2474 | self->buffer_size = buffer_size; |
| 2475 | self->readable = 1; |
| 2476 | self->writable = 1; |
| 2477 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2478 | if (_buffered_init(self) < 0) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2479 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2480 | _bufferedreader_reset_buf(self); |
| 2481 | _bufferedwriter_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2482 | self->pos = 0; |
| 2483 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 2484 | self->fast_closed_checks = (Py_TYPE(self) == &PyBufferedRandom_Type && |
| 2485 | Py_TYPE(raw) == &PyFileIO_Type); |
| 2486 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2487 | self->ok = 1; |
| 2488 | return 0; |
| 2489 | } |
| 2490 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2491 | static PyMethodDef bufferedrandom_methods[] = { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2492 | /* BufferedIOMixin methods */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2493 | {"close", (PyCFunction)buffered_close, METH_NOARGS}, |
| 2494 | {"detach", (PyCFunction)buffered_detach, METH_NOARGS}, |
| 2495 | {"seekable", (PyCFunction)buffered_seekable, METH_NOARGS}, |
| 2496 | {"readable", (PyCFunction)buffered_readable, METH_NOARGS}, |
| 2497 | {"writable", (PyCFunction)buffered_writable, METH_NOARGS}, |
| 2498 | {"fileno", (PyCFunction)buffered_fileno, METH_NOARGS}, |
| 2499 | {"isatty", (PyCFunction)buffered_isatty, METH_NOARGS}, |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 2500 | {"_dealloc_warn", (PyCFunction)buffered_dealloc_warn, METH_O}, |
Antoine Pitrou | 243757e | 2010-11-05 21:15:39 +0000 | [diff] [blame] | 2501 | {"__getstate__", (PyCFunction)buffered_getstate, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2502 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2503 | {"flush", (PyCFunction)buffered_flush, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2504 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2505 | {"seek", (PyCFunction)buffered_seek, METH_VARARGS}, |
| 2506 | {"tell", (PyCFunction)buffered_tell, METH_NOARGS}, |
| 2507 | {"truncate", (PyCFunction)buffered_truncate, METH_VARARGS}, |
| 2508 | {"read", (PyCFunction)buffered_read, METH_VARARGS}, |
| 2509 | {"read1", (PyCFunction)buffered_read1, METH_VARARGS}, |
| 2510 | {"readinto", (PyCFunction)buffered_readinto, METH_VARARGS}, |
| 2511 | {"readline", (PyCFunction)buffered_readline, METH_VARARGS}, |
| 2512 | {"peek", (PyCFunction)buffered_peek, METH_VARARGS}, |
| 2513 | {"write", (PyCFunction)bufferedwriter_write, METH_VARARGS}, |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 2514 | {"__sizeof__", (PyCFunction)buffered_sizeof, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2515 | {NULL, NULL} |
| 2516 | }; |
| 2517 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2518 | static PyMemberDef bufferedrandom_members[] = { |
Antoine Pitrou | 7f8f418 | 2010-12-21 21:20:59 +0000 | [diff] [blame] | 2519 | {"raw", T_OBJECT, offsetof(buffered, raw), READONLY}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2520 | {NULL} |
| 2521 | }; |
| 2522 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2523 | static PyGetSetDef bufferedrandom_getset[] = { |
| 2524 | {"closed", (getter)buffered_closed_get, NULL, NULL}, |
| 2525 | {"name", (getter)buffered_name_get, NULL, NULL}, |
| 2526 | {"mode", (getter)buffered_mode_get, NULL, NULL}, |
Benjamin Peterson | 1fea321 | 2009-04-19 03:15:20 +0000 | [diff] [blame] | 2527 | {NULL} |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2528 | }; |
| 2529 | |
| 2530 | |
| 2531 | PyTypeObject PyBufferedRandom_Type = { |
| 2532 | PyVarObject_HEAD_INIT(NULL, 0) |
| 2533 | "_io.BufferedRandom", /*tp_name*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2534 | sizeof(buffered), /*tp_basicsize*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2535 | 0, /*tp_itemsize*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2536 | (destructor)buffered_dealloc, /*tp_dealloc*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2537 | 0, /*tp_print*/ |
| 2538 | 0, /*tp_getattr*/ |
| 2539 | 0, /*tp_setattr*/ |
| 2540 | 0, /*tp_compare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2541 | (reprfunc)buffered_repr, /*tp_repr*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2542 | 0, /*tp_as_number*/ |
| 2543 | 0, /*tp_as_sequence*/ |
| 2544 | 0, /*tp_as_mapping*/ |
| 2545 | 0, /*tp_hash */ |
| 2546 | 0, /*tp_call*/ |
| 2547 | 0, /*tp_str*/ |
| 2548 | 0, /*tp_getattro*/ |
| 2549 | 0, /*tp_setattro*/ |
| 2550 | 0, /*tp_as_buffer*/ |
| 2551 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
| 2552 | | Py_TPFLAGS_HAVE_GC, /*tp_flags*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2553 | bufferedrandom_doc, /* tp_doc */ |
| 2554 | (traverseproc)buffered_traverse, /* tp_traverse */ |
| 2555 | (inquiry)buffered_clear, /* tp_clear */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2556 | 0, /* tp_richcompare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2557 | offsetof(buffered, weakreflist), /*tp_weaklistoffset*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2558 | 0, /* tp_iter */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2559 | (iternextfunc)buffered_iternext, /* tp_iternext */ |
| 2560 | bufferedrandom_methods, /* tp_methods */ |
| 2561 | bufferedrandom_members, /* tp_members */ |
| 2562 | bufferedrandom_getset, /* tp_getset */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2563 | 0, /* tp_base */ |
| 2564 | 0, /*tp_dict*/ |
| 2565 | 0, /* tp_descr_get */ |
| 2566 | 0, /* tp_descr_set */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2567 | offsetof(buffered, dict), /*tp_dictoffset*/ |
| 2568 | (initproc)bufferedrandom_init, /* tp_init */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2569 | 0, /* tp_alloc */ |
| 2570 | PyType_GenericNew, /* tp_new */ |
| 2571 | }; |