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; |
Victor Stinner | ace47d7 | 2013-07-18 01:41:08 +0200 | [diff] [blame^] | 666 | #ifdef Py_DEBUG |
| 667 | /* in debug mode, PyEval_EvalFrameEx() fails with an assertion error |
| 668 | if an exception is set when it is called */ |
| 669 | PyErr_Clear(); |
| 670 | #endif |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 671 | err = PyObject_CallFunction(PyExc_BlockingIOError, "isn", |
| 672 | errno, msg, written); |
| 673 | if (err) |
| 674 | PyErr_SetObject(PyExc_BlockingIOError, err); |
| 675 | Py_XDECREF(err); |
| 676 | } |
| 677 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 678 | /* Returns the address of the `written` member if a BlockingIOError was |
| 679 | raised, NULL otherwise. The error is always re-raised. */ |
| 680 | static Py_ssize_t * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 681 | _buffered_check_blocking_error(void) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 682 | { |
| 683 | PyObject *t, *v, *tb; |
Antoine Pitrou | 6b4883d | 2011-10-12 02:54:14 +0200 | [diff] [blame] | 684 | PyOSErrorObject *err; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 685 | |
| 686 | PyErr_Fetch(&t, &v, &tb); |
| 687 | if (v == NULL || !PyErr_GivenExceptionMatches(v, PyExc_BlockingIOError)) { |
| 688 | PyErr_Restore(t, v, tb); |
| 689 | return NULL; |
| 690 | } |
Antoine Pitrou | 6b4883d | 2011-10-12 02:54:14 +0200 | [diff] [blame] | 691 | err = (PyOSErrorObject *) v; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 692 | /* TODO: sanity check (err->written >= 0) */ |
| 693 | PyErr_Restore(t, v, tb); |
| 694 | return &err->written; |
| 695 | } |
| 696 | |
| 697 | static Py_off_t |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 698 | _buffered_raw_tell(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 699 | { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 700 | Py_off_t n; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 701 | PyObject *res; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 702 | res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_tell, NULL); |
| 703 | if (res == NULL) |
| 704 | return -1; |
| 705 | n = PyNumber_AsOff_t(res, PyExc_ValueError); |
| 706 | Py_DECREF(res); |
| 707 | if (n < 0) { |
| 708 | if (!PyErr_Occurred()) |
| 709 | PyErr_Format(PyExc_IOError, |
Mark Dickinson | 1a0aaaa | 2009-11-24 20:54:11 +0000 | [diff] [blame] | 710 | "Raw stream returned invalid position %" PY_PRIdOFF, |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 711 | (PY_OFF_T_COMPAT)n); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 712 | return -1; |
| 713 | } |
| 714 | self->abs_pos = n; |
| 715 | return n; |
| 716 | } |
| 717 | |
| 718 | static Py_off_t |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 719 | _buffered_raw_seek(buffered *self, Py_off_t target, int whence) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 720 | { |
| 721 | PyObject *res, *posobj, *whenceobj; |
| 722 | Py_off_t n; |
| 723 | |
| 724 | posobj = PyLong_FromOff_t(target); |
| 725 | if (posobj == NULL) |
| 726 | return -1; |
| 727 | whenceobj = PyLong_FromLong(whence); |
| 728 | if (whenceobj == NULL) { |
| 729 | Py_DECREF(posobj); |
| 730 | return -1; |
| 731 | } |
| 732 | res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_seek, |
| 733 | posobj, whenceobj, NULL); |
| 734 | Py_DECREF(posobj); |
| 735 | Py_DECREF(whenceobj); |
| 736 | if (res == NULL) |
| 737 | return -1; |
| 738 | n = PyNumber_AsOff_t(res, PyExc_ValueError); |
| 739 | Py_DECREF(res); |
| 740 | if (n < 0) { |
| 741 | if (!PyErr_Occurred()) |
| 742 | PyErr_Format(PyExc_IOError, |
Mark Dickinson | 1a0aaaa | 2009-11-24 20:54:11 +0000 | [diff] [blame] | 743 | "Raw stream returned invalid position %" PY_PRIdOFF, |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 744 | (PY_OFF_T_COMPAT)n); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 745 | return -1; |
| 746 | } |
| 747 | self->abs_pos = n; |
| 748 | return n; |
| 749 | } |
| 750 | |
| 751 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 752 | _buffered_init(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 753 | { |
| 754 | Py_ssize_t n; |
| 755 | if (self->buffer_size <= 0) { |
| 756 | PyErr_SetString(PyExc_ValueError, |
| 757 | "buffer size must be strictly positive"); |
| 758 | return -1; |
| 759 | } |
| 760 | if (self->buffer) |
| 761 | PyMem_Free(self->buffer); |
| 762 | self->buffer = PyMem_Malloc(self->buffer_size); |
| 763 | if (self->buffer == NULL) { |
| 764 | PyErr_NoMemory(); |
| 765 | return -1; |
| 766 | } |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 767 | #ifdef WITH_THREAD |
Antoine Pitrou | c881f15 | 2010-08-01 16:53:42 +0000 | [diff] [blame] | 768 | if (self->lock) |
| 769 | PyThread_free_lock(self->lock); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 770 | self->lock = PyThread_allocate_lock(); |
| 771 | if (self->lock == NULL) { |
| 772 | PyErr_SetString(PyExc_RuntimeError, "can't allocate read lock"); |
| 773 | return -1; |
| 774 | } |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 775 | self->owner = 0; |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 776 | #endif |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 777 | /* Find out whether buffer_size is a power of 2 */ |
| 778 | /* XXX is this optimization useful? */ |
| 779 | for (n = self->buffer_size - 1; n & 1; n >>= 1) |
| 780 | ; |
| 781 | if (n == 0) |
| 782 | self->buffer_mask = self->buffer_size - 1; |
| 783 | else |
| 784 | self->buffer_mask = 0; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 785 | if (_buffered_raw_tell(self) == -1) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 786 | PyErr_Clear(); |
| 787 | return 0; |
| 788 | } |
| 789 | |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 790 | /* Return 1 if an EnvironmentError with errno == EINTR is set (and then |
| 791 | clears the error indicator), 0 otherwise. |
| 792 | Should only be called when PyErr_Occurred() is true. |
| 793 | */ |
Gregory P. Smith | 5135992 | 2012-06-23 23:55:39 -0700 | [diff] [blame] | 794 | int |
| 795 | _PyIO_trap_eintr(void) |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 796 | { |
| 797 | static PyObject *eintr_int = NULL; |
| 798 | PyObject *typ, *val, *tb; |
| 799 | PyEnvironmentErrorObject *env_err; |
| 800 | |
| 801 | if (eintr_int == NULL) { |
| 802 | eintr_int = PyLong_FromLong(EINTR); |
| 803 | assert(eintr_int != NULL); |
| 804 | } |
| 805 | if (!PyErr_ExceptionMatches(PyExc_EnvironmentError)) |
| 806 | return 0; |
| 807 | PyErr_Fetch(&typ, &val, &tb); |
| 808 | PyErr_NormalizeException(&typ, &val, &tb); |
| 809 | env_err = (PyEnvironmentErrorObject *) val; |
| 810 | assert(env_err != NULL); |
| 811 | if (env_err->myerrno != NULL && |
| 812 | PyObject_RichCompareBool(env_err->myerrno, eintr_int, Py_EQ) > 0) { |
| 813 | Py_DECREF(typ); |
| 814 | Py_DECREF(val); |
| 815 | Py_XDECREF(tb); |
| 816 | return 1; |
| 817 | } |
| 818 | /* This silences any error set by PyObject_RichCompareBool() */ |
| 819 | PyErr_Restore(typ, val, tb); |
| 820 | return 0; |
| 821 | } |
| 822 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 823 | /* |
| 824 | * Shared methods and wrappers |
| 825 | */ |
| 826 | |
| 827 | static PyObject * |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 828 | buffered_flush_and_rewind_unlocked(buffered *self) |
| 829 | { |
| 830 | PyObject *res; |
| 831 | |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 832 | res = _bufferedwriter_flush_unlocked(self); |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 833 | if (res == NULL) |
| 834 | return NULL; |
| 835 | Py_DECREF(res); |
| 836 | |
| 837 | if (self->readable) { |
| 838 | /* Rewind the raw stream so that its position corresponds to |
| 839 | the current logical position. */ |
| 840 | Py_off_t n; |
| 841 | n = _buffered_raw_seek(self, -RAW_OFFSET(self), 1); |
| 842 | _bufferedreader_reset_buf(self); |
| 843 | if (n == -1) |
| 844 | return NULL; |
| 845 | } |
| 846 | Py_RETURN_NONE; |
| 847 | } |
| 848 | |
| 849 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 850 | buffered_flush(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 851 | { |
| 852 | PyObject *res; |
| 853 | |
| 854 | CHECK_INITIALIZED(self) |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 855 | CHECK_CLOSED(self, "flush of closed file") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 856 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 857 | if (!ENTER_BUFFERED(self)) |
| 858 | return NULL; |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 859 | res = buffered_flush_and_rewind_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 860 | LEAVE_BUFFERED(self) |
| 861 | |
| 862 | return res; |
| 863 | } |
| 864 | |
| 865 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 866 | buffered_peek(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 867 | { |
| 868 | Py_ssize_t n = 0; |
| 869 | PyObject *res = NULL; |
| 870 | |
| 871 | CHECK_INITIALIZED(self) |
| 872 | if (!PyArg_ParseTuple(args, "|n:peek", &n)) { |
| 873 | return NULL; |
| 874 | } |
| 875 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 876 | if (!ENTER_BUFFERED(self)) |
| 877 | return NULL; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 878 | |
| 879 | if (self->writable) { |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 880 | res = buffered_flush_and_rewind_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 881 | if (res == NULL) |
| 882 | goto end; |
| 883 | Py_CLEAR(res); |
| 884 | } |
Victor Stinner | bc93a11 | 2011-06-01 00:01:24 +0200 | [diff] [blame] | 885 | res = _bufferedreader_peek_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 886 | |
| 887 | end: |
| 888 | LEAVE_BUFFERED(self) |
| 889 | return res; |
| 890 | } |
| 891 | |
| 892 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 893 | buffered_read(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 894 | { |
| 895 | Py_ssize_t n = -1; |
| 896 | PyObject *res; |
| 897 | |
| 898 | CHECK_INITIALIZED(self) |
Benjamin Peterson | bf5ff76 | 2009-12-13 19:25:34 +0000 | [diff] [blame] | 899 | if (!PyArg_ParseTuple(args, "|O&:read", &_PyIO_ConvertSsize_t, &n)) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 900 | return NULL; |
| 901 | } |
| 902 | if (n < -1) { |
| 903 | PyErr_SetString(PyExc_ValueError, |
| 904 | "read length must be positive or -1"); |
| 905 | return NULL; |
| 906 | } |
| 907 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 908 | CHECK_CLOSED(self, "read of closed file") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 909 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 910 | if (n == -1) { |
| 911 | /* The number of bytes is unspecified, read until the end of stream */ |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 912 | if (!ENTER_BUFFERED(self)) |
| 913 | return NULL; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 914 | res = _bufferedreader_read_all(self); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 915 | } |
| 916 | else { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 917 | res = _bufferedreader_read_fast(self, n); |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 918 | if (res != Py_None) |
| 919 | return res; |
| 920 | Py_DECREF(res); |
| 921 | if (!ENTER_BUFFERED(self)) |
| 922 | return NULL; |
| 923 | res = _bufferedreader_read_generic(self, n); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 924 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 925 | |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 926 | LEAVE_BUFFERED(self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 927 | return res; |
| 928 | } |
| 929 | |
| 930 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 931 | buffered_read1(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 932 | { |
| 933 | Py_ssize_t n, have, r; |
| 934 | PyObject *res = NULL; |
| 935 | |
| 936 | CHECK_INITIALIZED(self) |
| 937 | if (!PyArg_ParseTuple(args, "n:read1", &n)) { |
| 938 | return NULL; |
| 939 | } |
| 940 | |
| 941 | if (n < 0) { |
| 942 | PyErr_SetString(PyExc_ValueError, |
| 943 | "read length must be positive"); |
| 944 | return NULL; |
| 945 | } |
| 946 | if (n == 0) |
| 947 | return PyBytes_FromStringAndSize(NULL, 0); |
| 948 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 949 | /* Return up to n bytes. If at least one byte is buffered, we |
| 950 | only return buffered bytes. Otherwise, we do one raw read. */ |
| 951 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 952 | have = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 953 | if (have > 0) { |
Antoine Pitrou | 56a220a | 2011-11-16 00:56:10 +0100 | [diff] [blame] | 954 | n = Py_MIN(have, n); |
| 955 | res = _bufferedreader_read_fast(self, n); |
| 956 | assert(res != Py_None); |
| 957 | return res; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 958 | } |
Antoine Pitrou | 56a220a | 2011-11-16 00:56:10 +0100 | [diff] [blame] | 959 | res = PyBytes_FromStringAndSize(NULL, n); |
| 960 | if (res == NULL) |
| 961 | return NULL; |
| 962 | if (!ENTER_BUFFERED(self)) { |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 963 | Py_DECREF(res); |
Antoine Pitrou | 56a220a | 2011-11-16 00:56:10 +0100 | [diff] [blame] | 964 | return NULL; |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 965 | } |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 966 | _bufferedreader_reset_buf(self); |
Antoine Pitrou | 56a220a | 2011-11-16 00:56:10 +0100 | [diff] [blame] | 967 | r = _bufferedreader_raw_read(self, PyBytes_AS_STRING(res), n); |
| 968 | LEAVE_BUFFERED(self) |
| 969 | if (r == -1) { |
| 970 | Py_DECREF(res); |
| 971 | return NULL; |
| 972 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 973 | if (r == -2) |
| 974 | r = 0; |
| 975 | if (n > r) |
Antoine Pitrou | 56a220a | 2011-11-16 00:56:10 +0100 | [diff] [blame] | 976 | _PyBytes_Resize(&res, r); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 977 | return res; |
| 978 | } |
| 979 | |
| 980 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 981 | buffered_readinto(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 982 | { |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 983 | Py_buffer buf; |
| 984 | Py_ssize_t n, written = 0, remaining; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 985 | PyObject *res = NULL; |
| 986 | |
| 987 | CHECK_INITIALIZED(self) |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 988 | |
| 989 | if (!PyArg_ParseTuple(args, "w*:readinto", &buf)) |
| 990 | return NULL; |
| 991 | |
| 992 | n = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 993 | if (n > 0) { |
| 994 | if (n >= buf.len) { |
| 995 | memcpy(buf.buf, self->buffer + self->pos, buf.len); |
| 996 | self->pos += buf.len; |
| 997 | res = PyLong_FromSsize_t(buf.len); |
| 998 | goto end_unlocked; |
| 999 | } |
| 1000 | memcpy(buf.buf, self->buffer + self->pos, n); |
| 1001 | self->pos += n; |
| 1002 | written = n; |
| 1003 | } |
| 1004 | |
| 1005 | if (!ENTER_BUFFERED(self)) |
| 1006 | goto end_unlocked; |
| 1007 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1008 | if (self->writable) { |
Antoine Pitrou | e8bb1a0 | 2011-08-20 14:52:04 +0200 | [diff] [blame] | 1009 | res = buffered_flush_and_rewind_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1010 | if (res == NULL) |
| 1011 | goto end; |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1012 | Py_CLEAR(res); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1013 | } |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1014 | |
| 1015 | _bufferedreader_reset_buf(self); |
| 1016 | self->pos = 0; |
| 1017 | |
| 1018 | for (remaining = buf.len - written; |
| 1019 | remaining > 0; |
| 1020 | written += n, remaining -= n) { |
| 1021 | /* If remaining bytes is larger than internal buffer size, copy |
| 1022 | * directly into caller's buffer. */ |
| 1023 | if (remaining > self->buffer_size) { |
Antoine Pitrou | 4e19e11 | 2011-05-12 02:07:00 +0200 | [diff] [blame] | 1024 | n = _bufferedreader_raw_read(self, (char *) buf.buf + written, |
| 1025 | remaining); |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1026 | } |
| 1027 | else { |
| 1028 | n = _bufferedreader_fill_buffer(self); |
| 1029 | if (n > 0) { |
| 1030 | if (n > remaining) |
| 1031 | n = remaining; |
Antoine Pitrou | 4e19e11 | 2011-05-12 02:07:00 +0200 | [diff] [blame] | 1032 | memcpy((char *) buf.buf + written, |
| 1033 | self->buffer + self->pos, n); |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1034 | self->pos += n; |
| 1035 | continue; /* short circuit */ |
| 1036 | } |
| 1037 | } |
| 1038 | if (n == 0 || (n == -2 && written > 0)) |
| 1039 | break; |
| 1040 | if (n < 0) { |
| 1041 | if (n == -2) { |
| 1042 | Py_INCREF(Py_None); |
| 1043 | res = Py_None; |
| 1044 | } |
| 1045 | goto end; |
| 1046 | } |
| 1047 | } |
| 1048 | res = PyLong_FromSsize_t(written); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1049 | |
| 1050 | end: |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1051 | LEAVE_BUFFERED(self); |
| 1052 | end_unlocked: |
| 1053 | PyBuffer_Release(&buf); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1054 | return res; |
| 1055 | } |
| 1056 | |
| 1057 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1058 | _buffered_readline(buffered *self, Py_ssize_t limit) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1059 | { |
| 1060 | PyObject *res = NULL; |
| 1061 | PyObject *chunks = NULL; |
| 1062 | Py_ssize_t n, written = 0; |
| 1063 | const char *start, *s, *end; |
| 1064 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1065 | CHECK_CLOSED(self, "readline of closed file") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1066 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1067 | /* First, try to find a line in the buffer. This can run unlocked because |
| 1068 | the calls to the C API are simple enough that they can't trigger |
| 1069 | any thread switch. */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1070 | n = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 1071 | if (limit >= 0 && n > limit) |
| 1072 | n = limit; |
| 1073 | start = self->buffer + self->pos; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1074 | s = memchr(start, '\n', n); |
| 1075 | if (s != NULL) { |
| 1076 | res = PyBytes_FromStringAndSize(start, s - start + 1); |
| 1077 | if (res != NULL) |
| 1078 | self->pos += s - start + 1; |
| 1079 | goto end_unlocked; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1080 | } |
| 1081 | if (n == limit) { |
| 1082 | res = PyBytes_FromStringAndSize(start, n); |
| 1083 | if (res != NULL) |
| 1084 | self->pos += n; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1085 | goto end_unlocked; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1086 | } |
| 1087 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 1088 | if (!ENTER_BUFFERED(self)) |
| 1089 | goto end_unlocked; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1090 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1091 | /* Now we try to get some more from the raw stream */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1092 | chunks = PyList_New(0); |
| 1093 | if (chunks == NULL) |
| 1094 | goto end; |
| 1095 | if (n > 0) { |
| 1096 | res = PyBytes_FromStringAndSize(start, n); |
| 1097 | if (res == NULL) |
| 1098 | goto end; |
| 1099 | if (PyList_Append(chunks, res) < 0) { |
| 1100 | Py_CLEAR(res); |
| 1101 | goto end; |
| 1102 | } |
| 1103 | Py_CLEAR(res); |
| 1104 | written += n; |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1105 | self->pos += n; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1106 | if (limit >= 0) |
| 1107 | limit -= n; |
| 1108 | } |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1109 | if (self->writable) { |
| 1110 | PyObject *r = buffered_flush_and_rewind_unlocked(self); |
| 1111 | if (r == NULL) |
| 1112 | goto end; |
| 1113 | Py_DECREF(r); |
| 1114 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1115 | |
| 1116 | for (;;) { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1117 | _bufferedreader_reset_buf(self); |
| 1118 | n = _bufferedreader_fill_buffer(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1119 | if (n == -1) |
| 1120 | goto end; |
| 1121 | if (n <= 0) |
| 1122 | break; |
| 1123 | if (limit >= 0 && n > limit) |
| 1124 | n = limit; |
| 1125 | start = self->buffer; |
| 1126 | end = start + n; |
| 1127 | s = start; |
| 1128 | while (s < end) { |
| 1129 | if (*s++ == '\n') { |
| 1130 | res = PyBytes_FromStringAndSize(start, s - start); |
| 1131 | if (res == NULL) |
| 1132 | goto end; |
| 1133 | self->pos = s - start; |
| 1134 | goto found; |
| 1135 | } |
| 1136 | } |
| 1137 | res = PyBytes_FromStringAndSize(start, n); |
| 1138 | if (res == NULL) |
| 1139 | goto end; |
| 1140 | if (n == limit) { |
| 1141 | self->pos = n; |
| 1142 | break; |
| 1143 | } |
| 1144 | if (PyList_Append(chunks, res) < 0) { |
| 1145 | Py_CLEAR(res); |
| 1146 | goto end; |
| 1147 | } |
| 1148 | Py_CLEAR(res); |
| 1149 | written += n; |
| 1150 | if (limit >= 0) |
| 1151 | limit -= n; |
| 1152 | } |
| 1153 | found: |
| 1154 | if (res != NULL && PyList_Append(chunks, res) < 0) { |
| 1155 | Py_CLEAR(res); |
| 1156 | goto end; |
| 1157 | } |
| 1158 | Py_CLEAR(res); |
| 1159 | res = _PyBytes_Join(_PyIO_empty_bytes, chunks); |
| 1160 | |
| 1161 | end: |
| 1162 | LEAVE_BUFFERED(self) |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1163 | end_unlocked: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1164 | Py_XDECREF(chunks); |
| 1165 | return res; |
| 1166 | } |
| 1167 | |
| 1168 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1169 | buffered_readline(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1170 | { |
| 1171 | Py_ssize_t limit = -1; |
| 1172 | |
| 1173 | CHECK_INITIALIZED(self) |
Benjamin Peterson | bf5ff76 | 2009-12-13 19:25:34 +0000 | [diff] [blame] | 1174 | if (!PyArg_ParseTuple(args, "|O&:readline", &_PyIO_ConvertSsize_t, &limit)) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1175 | return NULL; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1176 | return _buffered_readline(self, limit); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1177 | } |
| 1178 | |
| 1179 | |
| 1180 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1181 | buffered_tell(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1182 | { |
| 1183 | Py_off_t pos; |
| 1184 | |
| 1185 | CHECK_INITIALIZED(self) |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1186 | pos = _buffered_raw_tell(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1187 | if (pos == -1) |
| 1188 | return NULL; |
| 1189 | pos -= RAW_OFFSET(self); |
| 1190 | /* TODO: sanity check (pos >= 0) */ |
| 1191 | return PyLong_FromOff_t(pos); |
| 1192 | } |
| 1193 | |
| 1194 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1195 | buffered_seek(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1196 | { |
| 1197 | Py_off_t target, n; |
| 1198 | int whence = 0; |
| 1199 | PyObject *targetobj, *res = NULL; |
| 1200 | |
| 1201 | CHECK_INITIALIZED(self) |
| 1202 | if (!PyArg_ParseTuple(args, "O|i:seek", &targetobj, &whence)) { |
| 1203 | return NULL; |
| 1204 | } |
Jesus Cea | 9436361 | 2012-06-22 18:32:07 +0200 | [diff] [blame] | 1205 | |
| 1206 | /* Do some error checking instead of trusting OS 'seek()' |
| 1207 | ** error detection, just in case. |
| 1208 | */ |
| 1209 | if ((whence < 0 || whence >2) |
| 1210 | #ifdef SEEK_HOLE |
| 1211 | && (whence != SEEK_HOLE) |
| 1212 | #endif |
| 1213 | #ifdef SEEK_DATA |
| 1214 | && (whence != SEEK_DATA) |
| 1215 | #endif |
| 1216 | ) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1217 | PyErr_Format(PyExc_ValueError, |
Jesus Cea | 9436361 | 2012-06-22 18:32:07 +0200 | [diff] [blame] | 1218 | "whence value %d unsupported", whence); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1219 | return NULL; |
| 1220 | } |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1221 | |
| 1222 | CHECK_CLOSED(self, "seek of closed file") |
| 1223 | |
Antoine Pitrou | 1e44fec | 2011-10-04 12:26:20 +0200 | [diff] [blame] | 1224 | if (_PyIOBase_check_seekable(self->raw, Py_True) == NULL) |
| 1225 | return NULL; |
| 1226 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1227 | target = PyNumber_AsOff_t(targetobj, PyExc_ValueError); |
| 1228 | if (target == -1 && PyErr_Occurred()) |
| 1229 | return NULL; |
| 1230 | |
Jesus Cea | 9436361 | 2012-06-22 18:32:07 +0200 | [diff] [blame] | 1231 | /* SEEK_SET and SEEK_CUR are special because we could seek inside the |
| 1232 | buffer. Other whence values must be managed without this optimization. |
| 1233 | Some Operating Systems can provide additional values, like |
| 1234 | SEEK_HOLE/SEEK_DATA. */ |
| 1235 | if (((whence == 0) || (whence == 1)) && self->readable) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1236 | Py_off_t current, avail; |
| 1237 | /* Check if seeking leaves us inside the current buffer, |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1238 | so as to return quickly if possible. Also, we needn't take the |
| 1239 | lock in this fast path. |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1240 | Don't know how to do that when whence == 2, though. */ |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1241 | /* NOTE: RAW_TELL() can release the GIL but the object is in a stable |
| 1242 | state at this point. */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1243 | current = RAW_TELL(self); |
| 1244 | avail = READAHEAD(self); |
| 1245 | if (avail > 0) { |
| 1246 | Py_off_t offset; |
| 1247 | if (whence == 0) |
| 1248 | offset = target - (current - RAW_OFFSET(self)); |
| 1249 | else |
| 1250 | offset = target; |
| 1251 | if (offset >= -self->pos && offset <= avail) { |
| 1252 | self->pos += offset; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1253 | return PyLong_FromOff_t(current - avail + offset); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1254 | } |
| 1255 | } |
| 1256 | } |
| 1257 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 1258 | if (!ENTER_BUFFERED(self)) |
| 1259 | return NULL; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1260 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1261 | /* Fallback: invoke raw seek() method and clear buffer */ |
| 1262 | if (self->writable) { |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1263 | res = _bufferedwriter_flush_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1264 | if (res == NULL) |
| 1265 | goto end; |
| 1266 | Py_CLEAR(res); |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1267 | _bufferedwriter_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1268 | } |
| 1269 | |
| 1270 | /* TODO: align on block boundary and read buffer if needed? */ |
| 1271 | if (whence == 1) |
| 1272 | target -= RAW_OFFSET(self); |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1273 | n = _buffered_raw_seek(self, target, whence); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1274 | if (n == -1) |
| 1275 | goto end; |
| 1276 | self->raw_pos = -1; |
| 1277 | res = PyLong_FromOff_t(n); |
| 1278 | if (res != NULL && self->readable) |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1279 | _bufferedreader_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1280 | |
| 1281 | end: |
| 1282 | LEAVE_BUFFERED(self) |
| 1283 | return res; |
| 1284 | } |
| 1285 | |
| 1286 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1287 | buffered_truncate(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1288 | { |
| 1289 | PyObject *pos = Py_None; |
| 1290 | PyObject *res = NULL; |
| 1291 | |
| 1292 | CHECK_INITIALIZED(self) |
| 1293 | if (!PyArg_ParseTuple(args, "|O:truncate", &pos)) { |
| 1294 | return NULL; |
| 1295 | } |
| 1296 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 1297 | if (!ENTER_BUFFERED(self)) |
| 1298 | return NULL; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1299 | |
| 1300 | if (self->writable) { |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1301 | res = buffered_flush_and_rewind_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1302 | if (res == NULL) |
| 1303 | goto end; |
| 1304 | Py_CLEAR(res); |
| 1305 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1306 | res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_truncate, pos, NULL); |
| 1307 | if (res == NULL) |
| 1308 | goto end; |
| 1309 | /* Reset cached position */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1310 | if (_buffered_raw_tell(self) == -1) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1311 | PyErr_Clear(); |
| 1312 | |
| 1313 | end: |
| 1314 | LEAVE_BUFFERED(self) |
| 1315 | return res; |
| 1316 | } |
| 1317 | |
| 1318 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1319 | buffered_iternext(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1320 | { |
| 1321 | PyObject *line; |
| 1322 | PyTypeObject *tp; |
| 1323 | |
| 1324 | CHECK_INITIALIZED(self); |
| 1325 | |
| 1326 | tp = Py_TYPE(self); |
| 1327 | if (tp == &PyBufferedReader_Type || |
| 1328 | tp == &PyBufferedRandom_Type) { |
| 1329 | /* Skip method call overhead for speed */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1330 | line = _buffered_readline(self, -1); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1331 | } |
| 1332 | else { |
| 1333 | line = PyObject_CallMethodObjArgs((PyObject *)self, |
| 1334 | _PyIO_str_readline, NULL); |
| 1335 | if (line && !PyBytes_Check(line)) { |
| 1336 | PyErr_Format(PyExc_IOError, |
| 1337 | "readline() should have returned a bytes object, " |
| 1338 | "not '%.200s'", Py_TYPE(line)->tp_name); |
| 1339 | Py_DECREF(line); |
| 1340 | return NULL; |
| 1341 | } |
| 1342 | } |
| 1343 | |
| 1344 | if (line == NULL) |
| 1345 | return NULL; |
| 1346 | |
| 1347 | if (PyBytes_GET_SIZE(line) == 0) { |
| 1348 | /* Reached EOF or would have blocked */ |
| 1349 | Py_DECREF(line); |
| 1350 | return NULL; |
| 1351 | } |
| 1352 | |
| 1353 | return line; |
| 1354 | } |
| 1355 | |
Antoine Pitrou | 716c444 | 2009-05-23 19:04:03 +0000 | [diff] [blame] | 1356 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1357 | buffered_repr(buffered *self) |
Antoine Pitrou | 716c444 | 2009-05-23 19:04:03 +0000 | [diff] [blame] | 1358 | { |
| 1359 | PyObject *nameobj, *res; |
| 1360 | |
Martin v. Löwis | 767046a | 2011-10-14 15:35:36 +0200 | [diff] [blame] | 1361 | nameobj = _PyObject_GetAttrId((PyObject *) self, &PyId_name); |
Antoine Pitrou | 716c444 | 2009-05-23 19:04:03 +0000 | [diff] [blame] | 1362 | if (nameobj == NULL) { |
| 1363 | if (PyErr_ExceptionMatches(PyExc_AttributeError)) |
| 1364 | PyErr_Clear(); |
| 1365 | else |
| 1366 | return NULL; |
| 1367 | res = PyUnicode_FromFormat("<%s>", Py_TYPE(self)->tp_name); |
| 1368 | } |
| 1369 | else { |
| 1370 | res = PyUnicode_FromFormat("<%s name=%R>", |
| 1371 | Py_TYPE(self)->tp_name, nameobj); |
| 1372 | Py_DECREF(nameobj); |
| 1373 | } |
| 1374 | return res; |
| 1375 | } |
| 1376 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1377 | /* |
| 1378 | * class BufferedReader |
| 1379 | */ |
| 1380 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1381 | PyDoc_STRVAR(bufferedreader_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1382 | "Create a new buffered reader using the given readable raw IO object."); |
| 1383 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1384 | static void _bufferedreader_reset_buf(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1385 | { |
| 1386 | self->read_end = -1; |
| 1387 | } |
| 1388 | |
| 1389 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1390 | bufferedreader_init(buffered *self, PyObject *args, PyObject *kwds) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1391 | { |
| 1392 | char *kwlist[] = {"raw", "buffer_size", NULL}; |
| 1393 | Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE; |
| 1394 | PyObject *raw; |
| 1395 | |
| 1396 | self->ok = 0; |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 1397 | self->detached = 0; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1398 | |
| 1399 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|n:BufferedReader", kwlist, |
| 1400 | &raw, &buffer_size)) { |
| 1401 | return -1; |
| 1402 | } |
| 1403 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1404 | if (_PyIOBase_check_readable(raw, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1405 | return -1; |
| 1406 | |
| 1407 | Py_CLEAR(self->raw); |
| 1408 | Py_INCREF(raw); |
| 1409 | self->raw = raw; |
| 1410 | self->buffer_size = buffer_size; |
| 1411 | self->readable = 1; |
| 1412 | self->writable = 0; |
| 1413 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1414 | if (_buffered_init(self) < 0) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1415 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1416 | _bufferedreader_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1417 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1418 | self->fast_closed_checks = (Py_TYPE(self) == &PyBufferedReader_Type && |
| 1419 | Py_TYPE(raw) == &PyFileIO_Type); |
| 1420 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1421 | self->ok = 1; |
| 1422 | return 0; |
| 1423 | } |
| 1424 | |
| 1425 | static Py_ssize_t |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1426 | _bufferedreader_raw_read(buffered *self, char *start, Py_ssize_t len) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1427 | { |
| 1428 | Py_buffer buf; |
| 1429 | PyObject *memobj, *res; |
| 1430 | Py_ssize_t n; |
| 1431 | /* NOTE: the buffer needn't be released as its object is NULL. */ |
| 1432 | if (PyBuffer_FillInfo(&buf, NULL, start, len, 0, PyBUF_CONTIG) == -1) |
| 1433 | return -1; |
| 1434 | memobj = PyMemoryView_FromBuffer(&buf); |
| 1435 | if (memobj == NULL) |
| 1436 | return -1; |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 1437 | /* NOTE: PyErr_SetFromErrno() calls PyErr_CheckSignals() when EINTR |
| 1438 | occurs so we needn't do it ourselves. |
| 1439 | We then retry reading, ignoring the signal if no handler has |
| 1440 | raised (see issue #10956). |
| 1441 | */ |
| 1442 | do { |
| 1443 | res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_readinto, memobj, NULL); |
Gregory P. Smith | 5135992 | 2012-06-23 23:55:39 -0700 | [diff] [blame] | 1444 | } while (res == NULL && _PyIO_trap_eintr()); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1445 | Py_DECREF(memobj); |
| 1446 | if (res == NULL) |
| 1447 | return -1; |
| 1448 | if (res == Py_None) { |
| 1449 | /* Non-blocking stream would have blocked. Special return code! */ |
| 1450 | Py_DECREF(res); |
| 1451 | return -2; |
| 1452 | } |
| 1453 | n = PyNumber_AsSsize_t(res, PyExc_ValueError); |
| 1454 | Py_DECREF(res); |
| 1455 | if (n < 0 || n > len) { |
| 1456 | PyErr_Format(PyExc_IOError, |
| 1457 | "raw readinto() returned invalid length %zd " |
| 1458 | "(should have been between 0 and %zd)", n, len); |
| 1459 | return -1; |
| 1460 | } |
| 1461 | if (n > 0 && self->abs_pos != -1) |
| 1462 | self->abs_pos += n; |
| 1463 | return n; |
| 1464 | } |
| 1465 | |
| 1466 | static Py_ssize_t |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1467 | _bufferedreader_fill_buffer(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1468 | { |
| 1469 | Py_ssize_t start, len, n; |
| 1470 | if (VALID_READ_BUFFER(self)) |
| 1471 | start = Py_SAFE_DOWNCAST(self->read_end, Py_off_t, Py_ssize_t); |
| 1472 | else |
| 1473 | start = 0; |
| 1474 | len = self->buffer_size - start; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1475 | n = _bufferedreader_raw_read(self, self->buffer + start, len); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1476 | if (n <= 0) |
| 1477 | return n; |
| 1478 | self->read_end = start + n; |
| 1479 | self->raw_pos = start + n; |
| 1480 | return n; |
| 1481 | } |
| 1482 | |
| 1483 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1484 | _bufferedreader_read_all(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1485 | { |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1486 | Py_ssize_t current_size; |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1487 | PyObject *res = NULL, *data = NULL, *tmp = NULL, *chunks = NULL; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1488 | |
| 1489 | /* First copy what we have in the current buffer. */ |
| 1490 | current_size = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 1491 | if (current_size) { |
| 1492 | data = PyBytes_FromStringAndSize( |
| 1493 | self->buffer + self->pos, current_size); |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1494 | if (data == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1495 | return NULL; |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1496 | self->pos += current_size; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1497 | } |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1498 | /* We're going past the buffer's bounds, flush it */ |
| 1499 | if (self->writable) { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1500 | tmp = buffered_flush_and_rewind_unlocked(self); |
| 1501 | if (tmp == NULL) |
| 1502 | goto cleanup; |
| 1503 | Py_CLEAR(tmp); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1504 | } |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1505 | _bufferedreader_reset_buf(self); |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1506 | |
| 1507 | if (PyObject_HasAttr(self->raw, _PyIO_str_readall)) { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1508 | tmp = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_readall, NULL); |
| 1509 | if (tmp == NULL) |
| 1510 | goto cleanup; |
| 1511 | if (tmp != Py_None && !PyBytes_Check(tmp)) { |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1512 | PyErr_SetString(PyExc_TypeError, "readall() should return bytes"); |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1513 | goto cleanup; |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1514 | } |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1515 | if (tmp == Py_None) { |
| 1516 | if (current_size == 0) { |
| 1517 | res = Py_None; |
| 1518 | goto cleanup; |
| 1519 | } else { |
| 1520 | res = data; |
| 1521 | goto cleanup; |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1522 | } |
| 1523 | } |
| 1524 | else if (current_size) { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1525 | PyBytes_Concat(&data, tmp); |
| 1526 | res = data; |
| 1527 | goto cleanup; |
| 1528 | } |
| 1529 | else { |
| 1530 | res = tmp; |
| 1531 | goto cleanup; |
| 1532 | } |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1533 | } |
| 1534 | |
| 1535 | chunks = PyList_New(0); |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1536 | if (chunks == NULL) |
| 1537 | goto cleanup; |
Victor Stinner | b57f108 | 2011-05-26 00:19:38 +0200 | [diff] [blame] | 1538 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1539 | while (1) { |
| 1540 | if (data) { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1541 | if (PyList_Append(chunks, data) < 0) |
| 1542 | goto cleanup; |
| 1543 | Py_CLEAR(data); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1544 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1545 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1546 | /* Read until EOF or until read() would block. */ |
| 1547 | data = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_read, NULL); |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1548 | if (data == NULL) |
| 1549 | goto cleanup; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1550 | if (data != Py_None && !PyBytes_Check(data)) { |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1551 | PyErr_SetString(PyExc_TypeError, "read() should return bytes"); |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1552 | goto cleanup; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1553 | } |
| 1554 | if (data == Py_None || PyBytes_GET_SIZE(data) == 0) { |
| 1555 | if (current_size == 0) { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1556 | res = data; |
| 1557 | goto cleanup; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1558 | } |
| 1559 | else { |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1560 | tmp = _PyBytes_Join(_PyIO_empty_bytes, chunks); |
| 1561 | res = tmp; |
| 1562 | goto cleanup; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1563 | } |
| 1564 | } |
| 1565 | current_size += PyBytes_GET_SIZE(data); |
| 1566 | if (self->abs_pos != -1) |
| 1567 | self->abs_pos += PyBytes_GET_SIZE(data); |
| 1568 | } |
Richard Oudkerk | 9ad51ec | 2013-07-15 16:05:22 +0100 | [diff] [blame] | 1569 | cleanup: |
| 1570 | /* res is either NULL or a borrowed ref */ |
| 1571 | Py_XINCREF(res); |
| 1572 | Py_XDECREF(data); |
| 1573 | Py_XDECREF(tmp); |
| 1574 | Py_XDECREF(chunks); |
| 1575 | return res; |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1576 | } |
| 1577 | |
| 1578 | /* Read n bytes from the buffer if it can, otherwise return None. |
| 1579 | This function is simple enough that it can run unlocked. */ |
| 1580 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1581 | _bufferedreader_read_fast(buffered *self, Py_ssize_t n) |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1582 | { |
| 1583 | Py_ssize_t current_size; |
| 1584 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1585 | current_size = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 1586 | if (n <= current_size) { |
| 1587 | /* Fast path: the data to read is fully buffered. */ |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1588 | PyObject *res = PyBytes_FromStringAndSize(self->buffer + self->pos, n); |
| 1589 | if (res != NULL) |
| 1590 | self->pos += n; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1591 | return res; |
| 1592 | } |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1593 | Py_RETURN_NONE; |
| 1594 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1595 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1596 | /* Generic read function: read from the stream until enough bytes are read, |
| 1597 | * or until an EOF occurs or until read() would block. |
| 1598 | */ |
| 1599 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1600 | _bufferedreader_read_generic(buffered *self, Py_ssize_t n) |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1601 | { |
| 1602 | PyObject *res = NULL; |
| 1603 | Py_ssize_t current_size, remaining, written; |
| 1604 | char *out; |
| 1605 | |
| 1606 | current_size = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 1607 | if (n <= current_size) |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1608 | return _bufferedreader_read_fast(self, n); |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1609 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1610 | res = PyBytes_FromStringAndSize(NULL, n); |
| 1611 | if (res == NULL) |
| 1612 | goto error; |
| 1613 | out = PyBytes_AS_STRING(res); |
| 1614 | remaining = n; |
| 1615 | written = 0; |
| 1616 | if (current_size > 0) { |
| 1617 | memcpy(out, self->buffer + self->pos, current_size); |
| 1618 | remaining -= current_size; |
| 1619 | written += current_size; |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1620 | self->pos += current_size; |
| 1621 | } |
| 1622 | /* Flush the write buffer if necessary */ |
| 1623 | if (self->writable) { |
| 1624 | PyObject *r = buffered_flush_and_rewind_unlocked(self); |
| 1625 | if (r == NULL) |
| 1626 | goto error; |
| 1627 | Py_DECREF(r); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1628 | } |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1629 | _bufferedreader_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1630 | while (remaining > 0) { |
| 1631 | /* We want to read a whole block at the end into buffer. |
| 1632 | If we had readv() we could do this in one pass. */ |
| 1633 | Py_ssize_t r = MINUS_LAST_BLOCK(self, remaining); |
| 1634 | if (r == 0) |
| 1635 | break; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1636 | r = _bufferedreader_raw_read(self, out + written, r); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1637 | if (r == -1) |
| 1638 | goto error; |
| 1639 | if (r == 0 || r == -2) { |
| 1640 | /* EOF occurred or read() would block. */ |
| 1641 | if (r == 0 || written > 0) { |
| 1642 | if (_PyBytes_Resize(&res, written)) |
| 1643 | goto error; |
| 1644 | return res; |
| 1645 | } |
| 1646 | Py_DECREF(res); |
| 1647 | Py_INCREF(Py_None); |
| 1648 | return Py_None; |
| 1649 | } |
| 1650 | remaining -= r; |
| 1651 | written += r; |
| 1652 | } |
| 1653 | assert(remaining <= self->buffer_size); |
| 1654 | self->pos = 0; |
| 1655 | self->raw_pos = 0; |
| 1656 | self->read_end = 0; |
Antoine Pitrou | 32cfede | 2010-08-11 13:31:33 +0000 | [diff] [blame] | 1657 | /* NOTE: when the read is satisfied, we avoid issuing any additional |
| 1658 | reads, which could block indefinitely (e.g. on a socket). |
| 1659 | See issue #9550. */ |
| 1660 | while (remaining > 0 && self->read_end < self->buffer_size) { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1661 | Py_ssize_t r = _bufferedreader_fill_buffer(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1662 | if (r == -1) |
| 1663 | goto error; |
| 1664 | if (r == 0 || r == -2) { |
| 1665 | /* EOF occurred or read() would block. */ |
| 1666 | if (r == 0 || written > 0) { |
| 1667 | if (_PyBytes_Resize(&res, written)) |
| 1668 | goto error; |
| 1669 | return res; |
| 1670 | } |
| 1671 | Py_DECREF(res); |
| 1672 | Py_INCREF(Py_None); |
| 1673 | return Py_None; |
| 1674 | } |
| 1675 | if (remaining > r) { |
| 1676 | memcpy(out + written, self->buffer + self->pos, r); |
| 1677 | written += r; |
| 1678 | self->pos += r; |
| 1679 | remaining -= r; |
| 1680 | } |
| 1681 | else if (remaining > 0) { |
| 1682 | memcpy(out + written, self->buffer + self->pos, remaining); |
| 1683 | written += remaining; |
| 1684 | self->pos += remaining; |
| 1685 | remaining = 0; |
| 1686 | } |
| 1687 | if (remaining == 0) |
| 1688 | break; |
| 1689 | } |
| 1690 | |
| 1691 | return res; |
| 1692 | |
| 1693 | error: |
| 1694 | Py_XDECREF(res); |
| 1695 | return NULL; |
| 1696 | } |
| 1697 | |
| 1698 | static PyObject * |
Victor Stinner | bc93a11 | 2011-06-01 00:01:24 +0200 | [diff] [blame] | 1699 | _bufferedreader_peek_unlocked(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1700 | { |
| 1701 | Py_ssize_t have, r; |
| 1702 | |
| 1703 | have = Py_SAFE_DOWNCAST(READAHEAD(self), Py_off_t, Py_ssize_t); |
| 1704 | /* Constraints: |
| 1705 | 1. we don't want to advance the file position. |
| 1706 | 2. we don't want to lose block alignment, so we can't shift the buffer |
| 1707 | to make some place. |
| 1708 | Therefore, we either return `have` bytes (if > 0), or a full buffer. |
| 1709 | */ |
| 1710 | if (have > 0) { |
| 1711 | return PyBytes_FromStringAndSize(self->buffer + self->pos, have); |
| 1712 | } |
| 1713 | |
| 1714 | /* 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] | 1715 | _bufferedreader_reset_buf(self); |
| 1716 | r = _bufferedreader_fill_buffer(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1717 | if (r == -1) |
| 1718 | return NULL; |
| 1719 | if (r == -2) |
| 1720 | r = 0; |
| 1721 | self->pos = 0; |
| 1722 | return PyBytes_FromStringAndSize(self->buffer, r); |
| 1723 | } |
| 1724 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1725 | static PyMethodDef bufferedreader_methods[] = { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1726 | /* BufferedIOMixin methods */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1727 | {"detach", (PyCFunction)buffered_detach, METH_NOARGS}, |
| 1728 | {"flush", (PyCFunction)buffered_simple_flush, METH_NOARGS}, |
| 1729 | {"close", (PyCFunction)buffered_close, METH_NOARGS}, |
| 1730 | {"seekable", (PyCFunction)buffered_seekable, METH_NOARGS}, |
| 1731 | {"readable", (PyCFunction)buffered_readable, METH_NOARGS}, |
| 1732 | {"writable", (PyCFunction)buffered_writable, METH_NOARGS}, |
| 1733 | {"fileno", (PyCFunction)buffered_fileno, METH_NOARGS}, |
| 1734 | {"isatty", (PyCFunction)buffered_isatty, METH_NOARGS}, |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 1735 | {"_dealloc_warn", (PyCFunction)buffered_dealloc_warn, METH_O}, |
Antoine Pitrou | 243757e | 2010-11-05 21:15:39 +0000 | [diff] [blame] | 1736 | {"__getstate__", (PyCFunction)buffered_getstate, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1737 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1738 | {"read", (PyCFunction)buffered_read, METH_VARARGS}, |
| 1739 | {"peek", (PyCFunction)buffered_peek, METH_VARARGS}, |
| 1740 | {"read1", (PyCFunction)buffered_read1, METH_VARARGS}, |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 1741 | {"readinto", (PyCFunction)buffered_readinto, METH_VARARGS}, |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1742 | {"readline", (PyCFunction)buffered_readline, METH_VARARGS}, |
| 1743 | {"seek", (PyCFunction)buffered_seek, METH_VARARGS}, |
| 1744 | {"tell", (PyCFunction)buffered_tell, METH_NOARGS}, |
| 1745 | {"truncate", (PyCFunction)buffered_truncate, METH_VARARGS}, |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 1746 | {"__sizeof__", (PyCFunction)buffered_sizeof, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1747 | {NULL, NULL} |
| 1748 | }; |
| 1749 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1750 | static PyMemberDef bufferedreader_members[] = { |
Antoine Pitrou | 7f8f418 | 2010-12-21 21:20:59 +0000 | [diff] [blame] | 1751 | {"raw", T_OBJECT, offsetof(buffered, raw), READONLY}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1752 | {NULL} |
| 1753 | }; |
| 1754 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1755 | static PyGetSetDef bufferedreader_getset[] = { |
| 1756 | {"closed", (getter)buffered_closed_get, NULL, NULL}, |
| 1757 | {"name", (getter)buffered_name_get, NULL, NULL}, |
| 1758 | {"mode", (getter)buffered_mode_get, NULL, NULL}, |
Benjamin Peterson | 1fea321 | 2009-04-19 03:15:20 +0000 | [diff] [blame] | 1759 | {NULL} |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1760 | }; |
| 1761 | |
| 1762 | |
| 1763 | PyTypeObject PyBufferedReader_Type = { |
| 1764 | PyVarObject_HEAD_INIT(NULL, 0) |
| 1765 | "_io.BufferedReader", /*tp_name*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1766 | sizeof(buffered), /*tp_basicsize*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1767 | 0, /*tp_itemsize*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1768 | (destructor)buffered_dealloc, /*tp_dealloc*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1769 | 0, /*tp_print*/ |
| 1770 | 0, /*tp_getattr*/ |
| 1771 | 0, /*tp_setattr*/ |
| 1772 | 0, /*tp_compare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1773 | (reprfunc)buffered_repr, /*tp_repr*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1774 | 0, /*tp_as_number*/ |
| 1775 | 0, /*tp_as_sequence*/ |
| 1776 | 0, /*tp_as_mapping*/ |
| 1777 | 0, /*tp_hash */ |
| 1778 | 0, /*tp_call*/ |
| 1779 | 0, /*tp_str*/ |
| 1780 | 0, /*tp_getattro*/ |
| 1781 | 0, /*tp_setattro*/ |
| 1782 | 0, /*tp_as_buffer*/ |
| 1783 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
| 1784 | | Py_TPFLAGS_HAVE_GC, /*tp_flags*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1785 | bufferedreader_doc, /* tp_doc */ |
| 1786 | (traverseproc)buffered_traverse, /* tp_traverse */ |
| 1787 | (inquiry)buffered_clear, /* tp_clear */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1788 | 0, /* tp_richcompare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1789 | offsetof(buffered, weakreflist), /*tp_weaklistoffset*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1790 | 0, /* tp_iter */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1791 | (iternextfunc)buffered_iternext, /* tp_iternext */ |
| 1792 | bufferedreader_methods, /* tp_methods */ |
| 1793 | bufferedreader_members, /* tp_members */ |
| 1794 | bufferedreader_getset, /* tp_getset */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1795 | 0, /* tp_base */ |
| 1796 | 0, /* tp_dict */ |
| 1797 | 0, /* tp_descr_get */ |
| 1798 | 0, /* tp_descr_set */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1799 | offsetof(buffered, dict), /* tp_dictoffset */ |
| 1800 | (initproc)bufferedreader_init, /* tp_init */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1801 | 0, /* tp_alloc */ |
| 1802 | PyType_GenericNew, /* tp_new */ |
| 1803 | }; |
| 1804 | |
| 1805 | |
Benjamin Peterson | 59406a9 | 2009-03-26 17:10:29 +0000 | [diff] [blame] | 1806 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1807 | /* |
| 1808 | * class BufferedWriter |
| 1809 | */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1810 | PyDoc_STRVAR(bufferedwriter_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1811 | "A buffer for a writeable sequential RawIO object.\n" |
| 1812 | "\n" |
| 1813 | "The constructor creates a BufferedWriter for the given writeable raw\n" |
| 1814 | "stream. If the buffer_size is not given, it defaults to\n" |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 1815 | "DEFAULT_BUFFER_SIZE.\n" |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1816 | ); |
| 1817 | |
| 1818 | static void |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1819 | _bufferedwriter_reset_buf(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1820 | { |
| 1821 | self->write_pos = 0; |
| 1822 | self->write_end = -1; |
| 1823 | } |
| 1824 | |
| 1825 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1826 | bufferedwriter_init(buffered *self, PyObject *args, PyObject *kwds) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1827 | { |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 1828 | char *kwlist[] = {"raw", "buffer_size", NULL}; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1829 | Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1830 | PyObject *raw; |
| 1831 | |
| 1832 | self->ok = 0; |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 1833 | self->detached = 0; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1834 | |
R David Murray | 9f10f56 | 2013-02-23 22:07:55 -0500 | [diff] [blame] | 1835 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|n:BufferedWriter", kwlist, |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 1836 | &raw, &buffer_size)) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1837 | return -1; |
| 1838 | } |
| 1839 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1840 | if (_PyIOBase_check_writable(raw, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1841 | return -1; |
| 1842 | |
| 1843 | Py_CLEAR(self->raw); |
| 1844 | Py_INCREF(raw); |
| 1845 | self->raw = raw; |
| 1846 | self->readable = 0; |
| 1847 | self->writable = 1; |
| 1848 | |
| 1849 | self->buffer_size = buffer_size; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1850 | if (_buffered_init(self) < 0) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1851 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1852 | _bufferedwriter_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1853 | self->pos = 0; |
| 1854 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1855 | self->fast_closed_checks = (Py_TYPE(self) == &PyBufferedWriter_Type && |
| 1856 | Py_TYPE(raw) == &PyFileIO_Type); |
| 1857 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1858 | self->ok = 1; |
| 1859 | return 0; |
| 1860 | } |
| 1861 | |
| 1862 | static Py_ssize_t |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1863 | _bufferedwriter_raw_write(buffered *self, char *start, Py_ssize_t len) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1864 | { |
| 1865 | Py_buffer buf; |
| 1866 | PyObject *memobj, *res; |
| 1867 | Py_ssize_t n; |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1868 | int errnum; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1869 | /* NOTE: the buffer needn't be released as its object is NULL. */ |
| 1870 | if (PyBuffer_FillInfo(&buf, NULL, start, len, 1, PyBUF_CONTIG_RO) == -1) |
| 1871 | return -1; |
| 1872 | memobj = PyMemoryView_FromBuffer(&buf); |
| 1873 | if (memobj == NULL) |
| 1874 | return -1; |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 1875 | /* NOTE: PyErr_SetFromErrno() calls PyErr_CheckSignals() when EINTR |
| 1876 | occurs so we needn't do it ourselves. |
| 1877 | We then retry writing, ignoring the signal if no handler has |
| 1878 | raised (see issue #10956). |
| 1879 | */ |
| 1880 | do { |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1881 | errno = 0; |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 1882 | res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_write, memobj, NULL); |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1883 | errnum = errno; |
Gregory P. Smith | 5135992 | 2012-06-23 23:55:39 -0700 | [diff] [blame] | 1884 | } while (res == NULL && _PyIO_trap_eintr()); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1885 | Py_DECREF(memobj); |
| 1886 | if (res == NULL) |
| 1887 | return -1; |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1888 | if (res == Py_None) { |
| 1889 | /* Non-blocking stream would have blocked. Special return code! |
| 1890 | Being paranoid we reset errno in case it is changed by code |
| 1891 | triggered by a decref. errno is used by _set_BlockingIOError(). */ |
| 1892 | Py_DECREF(res); |
| 1893 | errno = errnum; |
| 1894 | return -2; |
| 1895 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1896 | n = PyNumber_AsSsize_t(res, PyExc_ValueError); |
| 1897 | Py_DECREF(res); |
| 1898 | if (n < 0 || n > len) { |
| 1899 | PyErr_Format(PyExc_IOError, |
| 1900 | "raw write() returned invalid length %zd " |
| 1901 | "(should have been between 0 and %zd)", n, len); |
| 1902 | return -1; |
| 1903 | } |
| 1904 | if (n > 0 && self->abs_pos != -1) |
| 1905 | self->abs_pos += n; |
| 1906 | return n; |
| 1907 | } |
| 1908 | |
| 1909 | /* `restore_pos` is 1 if we need to restore the raw stream position at |
| 1910 | the end, 0 otherwise. */ |
| 1911 | static PyObject * |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1912 | _bufferedwriter_flush_unlocked(buffered *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1913 | { |
| 1914 | Py_ssize_t written = 0; |
| 1915 | Py_off_t n, rewind; |
| 1916 | |
| 1917 | if (!VALID_WRITE_BUFFER(self) || self->write_pos == self->write_end) |
| 1918 | goto end; |
| 1919 | /* First, rewind */ |
| 1920 | rewind = RAW_OFFSET(self) + (self->pos - self->write_pos); |
| 1921 | if (rewind != 0) { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1922 | n = _buffered_raw_seek(self, -rewind, 1); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1923 | if (n < 0) { |
| 1924 | goto error; |
| 1925 | } |
| 1926 | self->raw_pos -= rewind; |
| 1927 | } |
| 1928 | while (self->write_pos < self->write_end) { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1929 | n = _bufferedwriter_raw_write(self, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1930 | self->buffer + self->write_pos, |
| 1931 | Py_SAFE_DOWNCAST(self->write_end - self->write_pos, |
| 1932 | Py_off_t, Py_ssize_t)); |
| 1933 | if (n == -1) { |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 1934 | goto error; |
| 1935 | } |
| 1936 | else if (n == -2) { |
| 1937 | _set_BlockingIOError("write could not complete without blocking", |
| 1938 | 0); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1939 | goto error; |
| 1940 | } |
| 1941 | self->write_pos += n; |
| 1942 | self->raw_pos = self->write_pos; |
| 1943 | written += Py_SAFE_DOWNCAST(n, Py_off_t, Py_ssize_t); |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 1944 | /* Partial writes can return successfully when interrupted by a |
| 1945 | signal (see write(2)). We must run signal handlers before |
| 1946 | blocking another time, possibly indefinitely. */ |
| 1947 | if (PyErr_CheckSignals() < 0) |
| 1948 | goto error; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1949 | } |
| 1950 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1951 | _bufferedwriter_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1952 | |
| 1953 | end: |
| 1954 | Py_RETURN_NONE; |
| 1955 | |
| 1956 | error: |
| 1957 | return NULL; |
| 1958 | } |
| 1959 | |
| 1960 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 1961 | bufferedwriter_write(buffered *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1962 | { |
| 1963 | PyObject *res = NULL; |
| 1964 | Py_buffer buf; |
Amaury Forgeot d'Arc | e1b60d4 | 2009-10-05 21:09:00 +0000 | [diff] [blame] | 1965 | Py_ssize_t written, avail, remaining; |
| 1966 | Py_off_t offset; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1967 | |
| 1968 | CHECK_INITIALIZED(self) |
| 1969 | if (!PyArg_ParseTuple(args, "y*:write", &buf)) { |
| 1970 | return NULL; |
| 1971 | } |
| 1972 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 1973 | if (IS_CLOSED(self)) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1974 | PyErr_SetString(PyExc_ValueError, "write to closed file"); |
| 1975 | PyBuffer_Release(&buf); |
| 1976 | return NULL; |
| 1977 | } |
| 1978 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 1979 | if (!ENTER_BUFFERED(self)) { |
| 1980 | PyBuffer_Release(&buf); |
| 1981 | return NULL; |
| 1982 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1983 | |
| 1984 | /* Fast path: the data to write can be fully buffered. */ |
| 1985 | if (!VALID_READ_BUFFER(self) && !VALID_WRITE_BUFFER(self)) { |
| 1986 | self->pos = 0; |
| 1987 | self->raw_pos = 0; |
| 1988 | } |
| 1989 | avail = Py_SAFE_DOWNCAST(self->buffer_size - self->pos, Py_off_t, Py_ssize_t); |
| 1990 | if (buf.len <= avail) { |
| 1991 | memcpy(self->buffer + self->pos, buf.buf, buf.len); |
Antoine Pitrou | 7c40489 | 2011-05-13 00:13:33 +0200 | [diff] [blame] | 1992 | if (!VALID_WRITE_BUFFER(self) || self->write_pos > self->pos) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1993 | self->write_pos = self->pos; |
| 1994 | } |
| 1995 | ADJUST_POSITION(self, self->pos + buf.len); |
| 1996 | if (self->pos > self->write_end) |
| 1997 | self->write_end = self->pos; |
| 1998 | written = buf.len; |
| 1999 | goto end; |
| 2000 | } |
| 2001 | |
| 2002 | /* First write the current buffer */ |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 2003 | res = _bufferedwriter_flush_unlocked(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2004 | if (res == NULL) { |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2005 | Py_ssize_t *w = _buffered_check_blocking_error(); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2006 | if (w == NULL) |
| 2007 | goto error; |
| 2008 | if (self->readable) |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2009 | _bufferedreader_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2010 | /* Make some place by shifting the buffer. */ |
| 2011 | assert(VALID_WRITE_BUFFER(self)); |
| 2012 | memmove(self->buffer, self->buffer + self->write_pos, |
| 2013 | Py_SAFE_DOWNCAST(self->write_end - self->write_pos, |
| 2014 | Py_off_t, Py_ssize_t)); |
| 2015 | self->write_end -= self->write_pos; |
| 2016 | self->raw_pos -= self->write_pos; |
| 2017 | self->pos -= self->write_pos; |
| 2018 | self->write_pos = 0; |
| 2019 | avail = Py_SAFE_DOWNCAST(self->buffer_size - self->write_end, |
| 2020 | Py_off_t, Py_ssize_t); |
| 2021 | if (buf.len <= avail) { |
| 2022 | /* Everything can be buffered */ |
| 2023 | PyErr_Clear(); |
| 2024 | memcpy(self->buffer + self->write_end, buf.buf, buf.len); |
| 2025 | self->write_end += buf.len; |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 2026 | self->pos += buf.len; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2027 | written = buf.len; |
| 2028 | goto end; |
| 2029 | } |
| 2030 | /* Buffer as much as possible. */ |
| 2031 | memcpy(self->buffer + self->write_end, buf.buf, avail); |
| 2032 | self->write_end += avail; |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 2033 | self->pos += avail; |
| 2034 | /* XXX Modifying the existing exception e using the pointer w |
| 2035 | will change e.characters_written but not e.args[2]. |
| 2036 | Therefore we just replace with a new error. */ |
| 2037 | _set_BlockingIOError("write could not complete without blocking", |
| 2038 | avail); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2039 | goto error; |
| 2040 | } |
| 2041 | Py_CLEAR(res); |
| 2042 | |
Antoine Pitrou | a0ceb73 | 2009-08-06 20:29:56 +0000 | [diff] [blame] | 2043 | /* Adjust the raw stream position if it is away from the logical stream |
| 2044 | position. This happens if the read buffer has been filled but not |
| 2045 | modified (and therefore _bufferedwriter_flush_unlocked() didn't rewind |
| 2046 | the raw stream by itself). |
| 2047 | Fixes issue #6629. |
| 2048 | */ |
Amaury Forgeot d'Arc | e1b60d4 | 2009-10-05 21:09:00 +0000 | [diff] [blame] | 2049 | offset = RAW_OFFSET(self); |
| 2050 | if (offset != 0) { |
| 2051 | if (_buffered_raw_seek(self, -offset, 1) < 0) |
Antoine Pitrou | a0ceb73 | 2009-08-06 20:29:56 +0000 | [diff] [blame] | 2052 | goto error; |
Amaury Forgeot d'Arc | e1b60d4 | 2009-10-05 21:09:00 +0000 | [diff] [blame] | 2053 | self->raw_pos -= offset; |
Antoine Pitrou | a0ceb73 | 2009-08-06 20:29:56 +0000 | [diff] [blame] | 2054 | } |
| 2055 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2056 | /* Then write buf itself. At this point the buffer has been emptied. */ |
| 2057 | remaining = buf.len; |
| 2058 | written = 0; |
| 2059 | while (remaining > self->buffer_size) { |
Amaury Forgeot d'Arc | e1b60d4 | 2009-10-05 21:09:00 +0000 | [diff] [blame] | 2060 | Py_ssize_t n = _bufferedwriter_raw_write( |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2061 | self, (char *) buf.buf + written, buf.len - written); |
| 2062 | if (n == -1) { |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 2063 | goto error; |
| 2064 | } else if (n == -2) { |
| 2065 | /* Write failed because raw file is non-blocking */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2066 | if (remaining > self->buffer_size) { |
| 2067 | /* Can't buffer everything, still buffer as much as possible */ |
| 2068 | memcpy(self->buffer, |
| 2069 | (char *) buf.buf + written, self->buffer_size); |
| 2070 | self->raw_pos = 0; |
| 2071 | ADJUST_POSITION(self, self->buffer_size); |
| 2072 | self->write_end = self->buffer_size; |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 2073 | written += self->buffer_size; |
| 2074 | _set_BlockingIOError("write could not complete without " |
| 2075 | "blocking", written); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2076 | goto error; |
| 2077 | } |
| 2078 | PyErr_Clear(); |
| 2079 | break; |
| 2080 | } |
| 2081 | written += n; |
| 2082 | remaining -= n; |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 2083 | /* Partial writes can return successfully when interrupted by a |
| 2084 | signal (see write(2)). We must run signal handlers before |
| 2085 | blocking another time, possibly indefinitely. */ |
| 2086 | if (PyErr_CheckSignals() < 0) |
| 2087 | goto error; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2088 | } |
| 2089 | if (self->readable) |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2090 | _bufferedreader_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2091 | if (remaining > 0) { |
| 2092 | memcpy(self->buffer, (char *) buf.buf + written, remaining); |
| 2093 | written += remaining; |
| 2094 | } |
| 2095 | self->write_pos = 0; |
| 2096 | /* TODO: sanity check (remaining >= 0) */ |
| 2097 | self->write_end = remaining; |
| 2098 | ADJUST_POSITION(self, remaining); |
| 2099 | self->raw_pos = 0; |
| 2100 | |
| 2101 | end: |
| 2102 | res = PyLong_FromSsize_t(written); |
| 2103 | |
| 2104 | error: |
| 2105 | LEAVE_BUFFERED(self) |
| 2106 | PyBuffer_Release(&buf); |
| 2107 | return res; |
| 2108 | } |
| 2109 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2110 | static PyMethodDef bufferedwriter_methods[] = { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2111 | /* BufferedIOMixin methods */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2112 | {"close", (PyCFunction)buffered_close, METH_NOARGS}, |
| 2113 | {"detach", (PyCFunction)buffered_detach, METH_NOARGS}, |
| 2114 | {"seekable", (PyCFunction)buffered_seekable, METH_NOARGS}, |
| 2115 | {"readable", (PyCFunction)buffered_readable, METH_NOARGS}, |
| 2116 | {"writable", (PyCFunction)buffered_writable, METH_NOARGS}, |
| 2117 | {"fileno", (PyCFunction)buffered_fileno, METH_NOARGS}, |
| 2118 | {"isatty", (PyCFunction)buffered_isatty, METH_NOARGS}, |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 2119 | {"_dealloc_warn", (PyCFunction)buffered_dealloc_warn, METH_O}, |
Antoine Pitrou | 243757e | 2010-11-05 21:15:39 +0000 | [diff] [blame] | 2120 | {"__getstate__", (PyCFunction)buffered_getstate, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2121 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2122 | {"write", (PyCFunction)bufferedwriter_write, METH_VARARGS}, |
| 2123 | {"truncate", (PyCFunction)buffered_truncate, METH_VARARGS}, |
| 2124 | {"flush", (PyCFunction)buffered_flush, METH_NOARGS}, |
| 2125 | {"seek", (PyCFunction)buffered_seek, METH_VARARGS}, |
| 2126 | {"tell", (PyCFunction)buffered_tell, METH_NOARGS}, |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 2127 | {"__sizeof__", (PyCFunction)buffered_sizeof, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2128 | {NULL, NULL} |
| 2129 | }; |
| 2130 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2131 | static PyMemberDef bufferedwriter_members[] = { |
Antoine Pitrou | 7f8f418 | 2010-12-21 21:20:59 +0000 | [diff] [blame] | 2132 | {"raw", T_OBJECT, offsetof(buffered, raw), READONLY}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2133 | {NULL} |
| 2134 | }; |
| 2135 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2136 | static PyGetSetDef bufferedwriter_getset[] = { |
| 2137 | {"closed", (getter)buffered_closed_get, NULL, NULL}, |
| 2138 | {"name", (getter)buffered_name_get, NULL, NULL}, |
| 2139 | {"mode", (getter)buffered_mode_get, NULL, NULL}, |
Benjamin Peterson | 1fea321 | 2009-04-19 03:15:20 +0000 | [diff] [blame] | 2140 | {NULL} |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2141 | }; |
| 2142 | |
| 2143 | |
| 2144 | PyTypeObject PyBufferedWriter_Type = { |
| 2145 | PyVarObject_HEAD_INIT(NULL, 0) |
| 2146 | "_io.BufferedWriter", /*tp_name*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2147 | sizeof(buffered), /*tp_basicsize*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2148 | 0, /*tp_itemsize*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2149 | (destructor)buffered_dealloc, /*tp_dealloc*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2150 | 0, /*tp_print*/ |
| 2151 | 0, /*tp_getattr*/ |
| 2152 | 0, /*tp_setattr*/ |
| 2153 | 0, /*tp_compare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2154 | (reprfunc)buffered_repr, /*tp_repr*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2155 | 0, /*tp_as_number*/ |
| 2156 | 0, /*tp_as_sequence*/ |
| 2157 | 0, /*tp_as_mapping*/ |
| 2158 | 0, /*tp_hash */ |
| 2159 | 0, /*tp_call*/ |
| 2160 | 0, /*tp_str*/ |
| 2161 | 0, /*tp_getattro*/ |
| 2162 | 0, /*tp_setattro*/ |
| 2163 | 0, /*tp_as_buffer*/ |
| 2164 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
| 2165 | | Py_TPFLAGS_HAVE_GC, /*tp_flags*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2166 | bufferedwriter_doc, /* tp_doc */ |
| 2167 | (traverseproc)buffered_traverse, /* tp_traverse */ |
| 2168 | (inquiry)buffered_clear, /* tp_clear */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2169 | 0, /* tp_richcompare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2170 | offsetof(buffered, weakreflist), /*tp_weaklistoffset*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2171 | 0, /* tp_iter */ |
| 2172 | 0, /* tp_iternext */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2173 | bufferedwriter_methods, /* tp_methods */ |
| 2174 | bufferedwriter_members, /* tp_members */ |
| 2175 | bufferedwriter_getset, /* tp_getset */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2176 | 0, /* tp_base */ |
| 2177 | 0, /* tp_dict */ |
| 2178 | 0, /* tp_descr_get */ |
| 2179 | 0, /* tp_descr_set */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2180 | offsetof(buffered, dict), /* tp_dictoffset */ |
| 2181 | (initproc)bufferedwriter_init, /* tp_init */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2182 | 0, /* tp_alloc */ |
| 2183 | PyType_GenericNew, /* tp_new */ |
| 2184 | }; |
| 2185 | |
| 2186 | |
| 2187 | |
| 2188 | /* |
| 2189 | * BufferedRWPair |
| 2190 | */ |
| 2191 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2192 | PyDoc_STRVAR(bufferedrwpair_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2193 | "A buffered reader and writer object together.\n" |
| 2194 | "\n" |
| 2195 | "A buffered reader object and buffered writer object put together to\n" |
| 2196 | "form a sequential IO object that can read and write. This is typically\n" |
| 2197 | "used with a socket or two-way pipe.\n" |
| 2198 | "\n" |
| 2199 | "reader and writer are RawIOBase objects that are readable and\n" |
| 2200 | "writeable respectively. If the buffer_size is omitted it defaults to\n" |
Benjamin Peterson | 59406a9 | 2009-03-26 17:10:29 +0000 | [diff] [blame] | 2201 | "DEFAULT_BUFFER_SIZE.\n" |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2202 | ); |
| 2203 | |
| 2204 | /* XXX The usefulness of this (compared to having two separate IO objects) is |
| 2205 | * questionable. |
| 2206 | */ |
| 2207 | |
| 2208 | typedef struct { |
| 2209 | PyObject_HEAD |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2210 | buffered *reader; |
| 2211 | buffered *writer; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2212 | PyObject *dict; |
| 2213 | PyObject *weakreflist; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2214 | } rwpair; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2215 | |
| 2216 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2217 | bufferedrwpair_init(rwpair *self, PyObject *args, PyObject *kwds) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2218 | { |
| 2219 | PyObject *reader, *writer; |
| 2220 | Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2221 | |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 2222 | if (!PyArg_ParseTuple(args, "OO|n:BufferedRWPair", &reader, &writer, |
| 2223 | &buffer_size)) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2224 | return -1; |
| 2225 | } |
| 2226 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2227 | if (_PyIOBase_check_readable(reader, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2228 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2229 | if (_PyIOBase_check_writable(writer, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2230 | return -1; |
| 2231 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2232 | self->reader = (buffered *) PyObject_CallFunction( |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2233 | (PyObject *) &PyBufferedReader_Type, "On", reader, buffer_size); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2234 | if (self->reader == NULL) |
| 2235 | return -1; |
| 2236 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2237 | self->writer = (buffered *) PyObject_CallFunction( |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2238 | (PyObject *) &PyBufferedWriter_Type, "On", writer, buffer_size); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2239 | if (self->writer == NULL) { |
| 2240 | Py_CLEAR(self->reader); |
| 2241 | return -1; |
| 2242 | } |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2243 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2244 | return 0; |
| 2245 | } |
| 2246 | |
| 2247 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2248 | bufferedrwpair_traverse(rwpair *self, visitproc visit, void *arg) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2249 | { |
| 2250 | Py_VISIT(self->dict); |
| 2251 | return 0; |
| 2252 | } |
| 2253 | |
| 2254 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2255 | bufferedrwpair_clear(rwpair *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2256 | { |
| 2257 | Py_CLEAR(self->reader); |
| 2258 | Py_CLEAR(self->writer); |
| 2259 | Py_CLEAR(self->dict); |
| 2260 | return 0; |
| 2261 | } |
| 2262 | |
| 2263 | static void |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2264 | bufferedrwpair_dealloc(rwpair *self) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2265 | { |
| 2266 | _PyObject_GC_UNTRACK(self); |
| 2267 | Py_CLEAR(self->reader); |
| 2268 | Py_CLEAR(self->writer); |
| 2269 | Py_CLEAR(self->dict); |
| 2270 | Py_TYPE(self)->tp_free((PyObject *) self); |
| 2271 | } |
| 2272 | |
| 2273 | static PyObject * |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2274 | _forward_call(buffered *self, _Py_Identifier *name, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2275 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2276 | PyObject *func = _PyObject_GetAttrId((PyObject *)self, name); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2277 | PyObject *ret; |
| 2278 | |
| 2279 | if (func == NULL) { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2280 | PyErr_SetString(PyExc_AttributeError, name->string); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2281 | return NULL; |
| 2282 | } |
| 2283 | |
| 2284 | ret = PyObject_CallObject(func, args); |
| 2285 | Py_DECREF(func); |
| 2286 | return ret; |
| 2287 | } |
| 2288 | |
| 2289 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2290 | bufferedrwpair_read(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2291 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2292 | return _forward_call(self->reader, &PyId_read, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2293 | } |
| 2294 | |
| 2295 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2296 | bufferedrwpair_peek(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2297 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2298 | return _forward_call(self->reader, &PyId_peek, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2299 | } |
| 2300 | |
| 2301 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2302 | bufferedrwpair_read1(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2303 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2304 | return _forward_call(self->reader, &PyId_read1, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2305 | } |
| 2306 | |
| 2307 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2308 | bufferedrwpair_readinto(rwpair *self, PyObject *args) |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2309 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2310 | return _forward_call(self->reader, &PyId_readinto, args); |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2311 | } |
| 2312 | |
| 2313 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2314 | bufferedrwpair_write(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2315 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2316 | return _forward_call(self->writer, &PyId_write, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2317 | } |
| 2318 | |
| 2319 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2320 | bufferedrwpair_flush(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2321 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2322 | return _forward_call(self->writer, &PyId_flush, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2323 | } |
| 2324 | |
| 2325 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2326 | bufferedrwpair_readable(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2327 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2328 | return _forward_call(self->reader, &PyId_readable, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2329 | } |
| 2330 | |
| 2331 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2332 | bufferedrwpair_writable(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2333 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2334 | return _forward_call(self->writer, &PyId_writable, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2335 | } |
| 2336 | |
| 2337 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2338 | bufferedrwpair_close(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2339 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2340 | PyObject *ret = _forward_call(self->writer, &PyId_close, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2341 | if (ret == NULL) |
| 2342 | return NULL; |
| 2343 | Py_DECREF(ret); |
| 2344 | |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2345 | return _forward_call(self->reader, &PyId_close, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2346 | } |
| 2347 | |
| 2348 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2349 | bufferedrwpair_isatty(rwpair *self, PyObject *args) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2350 | { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2351 | PyObject *ret = _forward_call(self->writer, &PyId_isatty, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2352 | |
| 2353 | if (ret != Py_False) { |
| 2354 | /* either True or exception */ |
| 2355 | return ret; |
| 2356 | } |
| 2357 | Py_DECREF(ret); |
| 2358 | |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2359 | return _forward_call(self->reader, &PyId_isatty, args); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2360 | } |
| 2361 | |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2362 | static PyObject * |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2363 | bufferedrwpair_closed_get(rwpair *self, void *context) |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2364 | { |
Charles-François Natali | 42c28cd | 2011-10-05 19:53:43 +0200 | [diff] [blame] | 2365 | if (self->writer == NULL) { |
| 2366 | PyErr_SetString(PyExc_RuntimeError, |
| 2367 | "the BufferedRWPair object is being garbage-collected"); |
| 2368 | return NULL; |
| 2369 | } |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2370 | return PyObject_GetAttr((PyObject *) self->writer, _PyIO_str_closed); |
| 2371 | } |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2372 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2373 | static PyMethodDef bufferedrwpair_methods[] = { |
| 2374 | {"read", (PyCFunction)bufferedrwpair_read, METH_VARARGS}, |
| 2375 | {"peek", (PyCFunction)bufferedrwpair_peek, METH_VARARGS}, |
| 2376 | {"read1", (PyCFunction)bufferedrwpair_read1, METH_VARARGS}, |
| 2377 | {"readinto", (PyCFunction)bufferedrwpair_readinto, METH_VARARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2378 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2379 | {"write", (PyCFunction)bufferedrwpair_write, METH_VARARGS}, |
| 2380 | {"flush", (PyCFunction)bufferedrwpair_flush, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2381 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2382 | {"readable", (PyCFunction)bufferedrwpair_readable, METH_NOARGS}, |
| 2383 | {"writable", (PyCFunction)bufferedrwpair_writable, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2384 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2385 | {"close", (PyCFunction)bufferedrwpair_close, METH_NOARGS}, |
| 2386 | {"isatty", (PyCFunction)bufferedrwpair_isatty, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2387 | |
Antoine Pitrou | 243757e | 2010-11-05 21:15:39 +0000 | [diff] [blame] | 2388 | {"__getstate__", (PyCFunction)buffered_getstate, METH_NOARGS}, |
| 2389 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2390 | {NULL, NULL} |
| 2391 | }; |
| 2392 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2393 | static PyGetSetDef bufferedrwpair_getset[] = { |
| 2394 | {"closed", (getter)bufferedrwpair_closed_get, NULL, NULL}, |
Benjamin Peterson | 1fea321 | 2009-04-19 03:15:20 +0000 | [diff] [blame] | 2395 | {NULL} |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 2396 | }; |
| 2397 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2398 | PyTypeObject PyBufferedRWPair_Type = { |
| 2399 | PyVarObject_HEAD_INIT(NULL, 0) |
| 2400 | "_io.BufferedRWPair", /*tp_name*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2401 | sizeof(rwpair), /*tp_basicsize*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2402 | 0, /*tp_itemsize*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2403 | (destructor)bufferedrwpair_dealloc, /*tp_dealloc*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2404 | 0, /*tp_print*/ |
| 2405 | 0, /*tp_getattr*/ |
| 2406 | 0, /*tp_setattr*/ |
| 2407 | 0, /*tp_compare */ |
| 2408 | 0, /*tp_repr*/ |
| 2409 | 0, /*tp_as_number*/ |
| 2410 | 0, /*tp_as_sequence*/ |
| 2411 | 0, /*tp_as_mapping*/ |
| 2412 | 0, /*tp_hash */ |
| 2413 | 0, /*tp_call*/ |
| 2414 | 0, /*tp_str*/ |
| 2415 | 0, /*tp_getattro*/ |
| 2416 | 0, /*tp_setattro*/ |
| 2417 | 0, /*tp_as_buffer*/ |
| 2418 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
| 2419 | | Py_TPFLAGS_HAVE_GC, /* tp_flags */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2420 | bufferedrwpair_doc, /* tp_doc */ |
| 2421 | (traverseproc)bufferedrwpair_traverse, /* tp_traverse */ |
| 2422 | (inquiry)bufferedrwpair_clear, /* tp_clear */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2423 | 0, /* tp_richcompare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2424 | offsetof(rwpair, weakreflist), /*tp_weaklistoffset*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2425 | 0, /* tp_iter */ |
| 2426 | 0, /* tp_iternext */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2427 | bufferedrwpair_methods, /* tp_methods */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2428 | 0, /* tp_members */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2429 | bufferedrwpair_getset, /* tp_getset */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2430 | 0, /* tp_base */ |
| 2431 | 0, /* tp_dict */ |
| 2432 | 0, /* tp_descr_get */ |
| 2433 | 0, /* tp_descr_set */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2434 | offsetof(rwpair, dict), /* tp_dictoffset */ |
| 2435 | (initproc)bufferedrwpair_init, /* tp_init */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2436 | 0, /* tp_alloc */ |
| 2437 | PyType_GenericNew, /* tp_new */ |
| 2438 | }; |
| 2439 | |
| 2440 | |
| 2441 | |
| 2442 | /* |
| 2443 | * BufferedRandom |
| 2444 | */ |
| 2445 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2446 | PyDoc_STRVAR(bufferedrandom_doc, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2447 | "A buffered interface to random access streams.\n" |
| 2448 | "\n" |
| 2449 | "The constructor creates a reader and writer for a seekable stream,\n" |
| 2450 | "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] | 2451 | "defaults to DEFAULT_BUFFER_SIZE.\n" |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2452 | ); |
| 2453 | |
| 2454 | static int |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2455 | bufferedrandom_init(buffered *self, PyObject *args, PyObject *kwds) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2456 | { |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 2457 | char *kwlist[] = {"raw", "buffer_size", NULL}; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2458 | Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2459 | PyObject *raw; |
| 2460 | |
| 2461 | self->ok = 0; |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 2462 | self->detached = 0; |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2463 | |
R David Murray | 9f10f56 | 2013-02-23 22:07:55 -0500 | [diff] [blame] | 2464 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|n:BufferedRandom", kwlist, |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 2465 | &raw, &buffer_size)) { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2466 | return -1; |
| 2467 | } |
| 2468 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2469 | if (_PyIOBase_check_seekable(raw, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2470 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2471 | if (_PyIOBase_check_readable(raw, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2472 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2473 | if (_PyIOBase_check_writable(raw, Py_True) == NULL) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2474 | return -1; |
| 2475 | |
| 2476 | Py_CLEAR(self->raw); |
| 2477 | Py_INCREF(raw); |
| 2478 | self->raw = raw; |
| 2479 | self->buffer_size = buffer_size; |
| 2480 | self->readable = 1; |
| 2481 | self->writable = 1; |
| 2482 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2483 | if (_buffered_init(self) < 0) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2484 | return -1; |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2485 | _bufferedreader_reset_buf(self); |
| 2486 | _bufferedwriter_reset_buf(self); |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2487 | self->pos = 0; |
| 2488 | |
Antoine Pitrou | 711af3a | 2009-04-11 15:39:24 +0000 | [diff] [blame] | 2489 | self->fast_closed_checks = (Py_TYPE(self) == &PyBufferedRandom_Type && |
| 2490 | Py_TYPE(raw) == &PyFileIO_Type); |
| 2491 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2492 | self->ok = 1; |
| 2493 | return 0; |
| 2494 | } |
| 2495 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2496 | static PyMethodDef bufferedrandom_methods[] = { |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2497 | /* BufferedIOMixin methods */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2498 | {"close", (PyCFunction)buffered_close, METH_NOARGS}, |
| 2499 | {"detach", (PyCFunction)buffered_detach, METH_NOARGS}, |
| 2500 | {"seekable", (PyCFunction)buffered_seekable, METH_NOARGS}, |
| 2501 | {"readable", (PyCFunction)buffered_readable, METH_NOARGS}, |
| 2502 | {"writable", (PyCFunction)buffered_writable, METH_NOARGS}, |
| 2503 | {"fileno", (PyCFunction)buffered_fileno, METH_NOARGS}, |
| 2504 | {"isatty", (PyCFunction)buffered_isatty, METH_NOARGS}, |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 2505 | {"_dealloc_warn", (PyCFunction)buffered_dealloc_warn, METH_O}, |
Antoine Pitrou | 243757e | 2010-11-05 21:15:39 +0000 | [diff] [blame] | 2506 | {"__getstate__", (PyCFunction)buffered_getstate, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2507 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2508 | {"flush", (PyCFunction)buffered_flush, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2509 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2510 | {"seek", (PyCFunction)buffered_seek, METH_VARARGS}, |
| 2511 | {"tell", (PyCFunction)buffered_tell, METH_NOARGS}, |
| 2512 | {"truncate", (PyCFunction)buffered_truncate, METH_VARARGS}, |
| 2513 | {"read", (PyCFunction)buffered_read, METH_VARARGS}, |
| 2514 | {"read1", (PyCFunction)buffered_read1, METH_VARARGS}, |
| 2515 | {"readinto", (PyCFunction)buffered_readinto, METH_VARARGS}, |
| 2516 | {"readline", (PyCFunction)buffered_readline, METH_VARARGS}, |
| 2517 | {"peek", (PyCFunction)buffered_peek, METH_VARARGS}, |
| 2518 | {"write", (PyCFunction)bufferedwriter_write, METH_VARARGS}, |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 2519 | {"__sizeof__", (PyCFunction)buffered_sizeof, METH_NOARGS}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2520 | {NULL, NULL} |
| 2521 | }; |
| 2522 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2523 | static PyMemberDef bufferedrandom_members[] = { |
Antoine Pitrou | 7f8f418 | 2010-12-21 21:20:59 +0000 | [diff] [blame] | 2524 | {"raw", T_OBJECT, offsetof(buffered, raw), READONLY}, |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2525 | {NULL} |
| 2526 | }; |
| 2527 | |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2528 | static PyGetSetDef bufferedrandom_getset[] = { |
| 2529 | {"closed", (getter)buffered_closed_get, NULL, NULL}, |
| 2530 | {"name", (getter)buffered_name_get, NULL, NULL}, |
| 2531 | {"mode", (getter)buffered_mode_get, NULL, NULL}, |
Benjamin Peterson | 1fea321 | 2009-04-19 03:15:20 +0000 | [diff] [blame] | 2532 | {NULL} |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2533 | }; |
| 2534 | |
| 2535 | |
| 2536 | PyTypeObject PyBufferedRandom_Type = { |
| 2537 | PyVarObject_HEAD_INIT(NULL, 0) |
| 2538 | "_io.BufferedRandom", /*tp_name*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2539 | sizeof(buffered), /*tp_basicsize*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2540 | 0, /*tp_itemsize*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2541 | (destructor)buffered_dealloc, /*tp_dealloc*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2542 | 0, /*tp_print*/ |
| 2543 | 0, /*tp_getattr*/ |
| 2544 | 0, /*tp_setattr*/ |
| 2545 | 0, /*tp_compare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2546 | (reprfunc)buffered_repr, /*tp_repr*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2547 | 0, /*tp_as_number*/ |
| 2548 | 0, /*tp_as_sequence*/ |
| 2549 | 0, /*tp_as_mapping*/ |
| 2550 | 0, /*tp_hash */ |
| 2551 | 0, /*tp_call*/ |
| 2552 | 0, /*tp_str*/ |
| 2553 | 0, /*tp_getattro*/ |
| 2554 | 0, /*tp_setattro*/ |
| 2555 | 0, /*tp_as_buffer*/ |
| 2556 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
| 2557 | | Py_TPFLAGS_HAVE_GC, /*tp_flags*/ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2558 | bufferedrandom_doc, /* tp_doc */ |
| 2559 | (traverseproc)buffered_traverse, /* tp_traverse */ |
| 2560 | (inquiry)buffered_clear, /* tp_clear */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2561 | 0, /* tp_richcompare */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2562 | offsetof(buffered, weakreflist), /*tp_weaklistoffset*/ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2563 | 0, /* tp_iter */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2564 | (iternextfunc)buffered_iternext, /* tp_iternext */ |
| 2565 | bufferedrandom_methods, /* tp_methods */ |
| 2566 | bufferedrandom_members, /* tp_members */ |
| 2567 | bufferedrandom_getset, /* tp_getset */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2568 | 0, /* tp_base */ |
| 2569 | 0, /*tp_dict*/ |
| 2570 | 0, /* tp_descr_get */ |
| 2571 | 0, /* tp_descr_set */ |
Benjamin Peterson | 680bf1a | 2009-06-12 02:07:12 +0000 | [diff] [blame] | 2572 | offsetof(buffered, dict), /*tp_dictoffset*/ |
| 2573 | (initproc)bufferedrandom_init, /* tp_init */ |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2574 | 0, /* tp_alloc */ |
| 2575 | PyType_GenericNew, /* tp_new */ |
| 2576 | }; |