Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 1 | |
| 2 | #include "Python.h" |
| 3 | #include "import.h" |
| 4 | #include "cStringIO.h" |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 5 | #include "structmember.h" |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 6 | |
| 7 | PyDoc_STRVAR(cStringIO_module_documentation, |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 8 | "A simple fast partial StringIO replacement.\n" |
| 9 | "\n" |
| 10 | "This module provides a simple useful replacement for\n" |
| 11 | "the StringIO module that is written in C. It does not provide the\n" |
Fred Drake | aef1000 | 2000-06-19 13:17:41 +0000 | [diff] [blame] | 12 | "full generality of StringIO, but it provides enough for most\n" |
Thomas Wouters | 7e47402 | 2000-07-16 12:04:32 +0000 | [diff] [blame] | 13 | "applications and is especially useful in conjunction with the\n" |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 14 | "pickle module.\n" |
| 15 | "\n" |
| 16 | "Usage:\n" |
| 17 | "\n" |
| 18 | " from cStringIO import StringIO\n" |
| 19 | "\n" |
| 20 | " an_output_stream=StringIO()\n" |
| 21 | " an_output_stream.write(some_stuff)\n" |
| 22 | " ...\n" |
Jeremy Hylton | b189b07 | 2002-03-08 17:17:33 +0000 | [diff] [blame] | 23 | " value=an_output_stream.getvalue()\n" |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 24 | "\n" |
| 25 | " an_input_stream=StringIO(a_string)\n" |
| 26 | " spam=an_input_stream.readline()\n" |
| 27 | " spam=an_input_stream.read(5)\n" |
Guido van Rossum | 7d9b413 | 1998-11-25 16:17:32 +0000 | [diff] [blame] | 28 | " an_input_stream.seek(0) # OK, start over\n" |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 29 | " spam=an_input_stream.read() # and read it all\n" |
| 30 | " \n" |
| 31 | "If someone else wants to provide a more complete implementation,\n" |
| 32 | "go for it. :-) \n" |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 33 | "\n" |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 34 | "cStringIO.c,v 1.29 1999/06/15 14:10:27 jim Exp\n"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 35 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 36 | #define UNLESS(E) if (!(E)) |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 37 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 38 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 39 | /* Declaration for file-like objects that manage data as strings |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 40 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 41 | The IOobject type should be though of as a common base type for |
| 42 | Iobjects, which provide input (read-only) StringIO objects and |
| 43 | Oobjects, which provide read-write objects. Most of the methods |
| 44 | depend only on common data. |
| 45 | */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 46 | |
| 47 | typedef struct { |
| 48 | PyObject_HEAD |
| 49 | char *buf; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 50 | Py_ssize_t pos, string_size; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 51 | } IOobject; |
| 52 | |
| 53 | #define IOOOBJECT(O) ((IOobject*)(O)) |
| 54 | |
Skip Montanaro | e138828 | 2003-08-11 13:15:11 +0000 | [diff] [blame] | 55 | /* Declarations for objects of type StringO */ |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 56 | |
| 57 | typedef struct { /* Subtype of IOobject */ |
| 58 | PyObject_HEAD |
| 59 | char *buf; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 60 | Py_ssize_t pos, string_size; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 61 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 62 | Py_ssize_t buf_size; |
| 63 | int softspace; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 64 | } Oobject; |
| 65 | |
| 66 | /* Declarations for objects of type StringI */ |
| 67 | |
| 68 | typedef struct { /* Subtype of IOobject */ |
| 69 | PyObject_HEAD |
| 70 | char *buf; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 71 | Py_ssize_t pos, string_size; |
Marc-André Lemburg | e47df7a | 2001-09-24 17:34:52 +0000 | [diff] [blame] | 72 | /* We store a reference to the object here in order to keep |
| 73 | the buffer alive during the lifetime of the Iobject. */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 74 | PyObject *pbuf; |
| 75 | } Iobject; |
| 76 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 77 | /* IOobject (common) methods */ |
| 78 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 79 | PyDoc_STRVAR(IO_flush__doc__, "flush(): does nothing."); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 80 | |
| 81 | static int |
| 82 | IO__opencheck(IOobject *self) { |
| 83 | UNLESS (self->buf) { |
| 84 | PyErr_SetString(PyExc_ValueError, |
| 85 | "I/O operation on closed file"); |
| 86 | return 0; |
| 87 | } |
| 88 | return 1; |
| 89 | } |
| 90 | |
| 91 | static PyObject * |
Raymond Hettinger | 5475f23 | 2003-08-08 12:20:03 +0000 | [diff] [blame] | 92 | IO_get_closed(IOobject *self, void *closure) |
| 93 | { |
| 94 | PyObject *result = Py_False; |
| 95 | |
| 96 | if (self->buf == NULL) |
| 97 | result = Py_True; |
| 98 | Py_INCREF(result); |
| 99 | return result; |
| 100 | } |
| 101 | |
| 102 | static PyGetSetDef file_getsetlist[] = { |
| 103 | {"closed", (getter)IO_get_closed, NULL, "True if the file is closed"}, |
| 104 | {0}, |
| 105 | }; |
| 106 | |
| 107 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 108 | IO_flush(IOobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 109 | |
| 110 | UNLESS (IO__opencheck(self)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 111 | |
| 112 | Py_INCREF(Py_None); |
| 113 | return Py_None; |
| 114 | } |
| 115 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 116 | PyDoc_STRVAR(IO_getval__doc__, |
| 117 | "getvalue([use_pos]) -- Get the string value." |
| 118 | "\n" |
| 119 | "If use_pos is specified and is a true value, then the string returned\n" |
| 120 | "will include only the text up to the current file position.\n"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 121 | |
| 122 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 123 | IO_cgetval(PyObject *self) { |
| 124 | UNLESS (IO__opencheck(IOOOBJECT(self))) return NULL; |
| 125 | return PyString_FromStringAndSize(((IOobject*)self)->buf, |
| 126 | ((IOobject*)self)->pos); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 127 | } |
| 128 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 129 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 130 | IO_getval(IOobject *self, PyObject *args) { |
| 131 | PyObject *use_pos=Py_None; |
Martin v. Löwis | ad0a462 | 2006-02-16 14:30:23 +0000 | [diff] [blame] | 132 | Py_ssize_t s; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 133 | |
| 134 | UNLESS (IO__opencheck(self)) return NULL; |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 135 | UNLESS (PyArg_UnpackTuple(args,"getval", 0, 1,&use_pos)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 136 | |
| 137 | if (PyObject_IsTrue(use_pos)) { |
| 138 | s=self->pos; |
| 139 | if (s > self->string_size) s=self->string_size; |
| 140 | } |
| 141 | else |
| 142 | s=self->string_size; |
| 143 | return PyString_FromStringAndSize(self->buf, s); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 144 | } |
| 145 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 146 | PyDoc_STRVAR(IO_isatty__doc__, "isatty(): always returns 0"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 147 | |
| 148 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 149 | IO_isatty(IOobject *self, PyObject *unused) { |
Guido van Rossum | 674deb2 | 2002-09-01 15:06:28 +0000 | [diff] [blame] | 150 | Py_INCREF(Py_False); |
| 151 | return Py_False; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 152 | } |
| 153 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 154 | PyDoc_STRVAR(IO_read__doc__, |
| 155 | "read([s]) -- Read s characters, or the rest of the string"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 156 | |
| 157 | static int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 158 | IO_cread(PyObject *self, char **output, Py_ssize_t n) { |
Martin v. Löwis | ad0a462 | 2006-02-16 14:30:23 +0000 | [diff] [blame] | 159 | Py_ssize_t l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 160 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 161 | UNLESS (IO__opencheck(IOOOBJECT(self))) return -1; |
| 162 | l = ((IOobject*)self)->string_size - ((IOobject*)self)->pos; |
| 163 | if (n < 0 || n > l) { |
| 164 | n = l; |
| 165 | if (n < 0) n=0; |
| 166 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 167 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 168 | *output=((IOobject*)self)->buf + ((IOobject*)self)->pos; |
| 169 | ((IOobject*)self)->pos += n; |
| 170 | return n; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 174 | IO_read(IOobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 175 | Py_ssize_t n = -1; |
Thomas Wouters | f86d1e8 | 2006-03-01 22:15:15 +0000 | [diff] [blame] | 176 | char *output = NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 177 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 178 | UNLESS (PyArg_ParseTuple(args, "|n:read", &n)) return NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 179 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 180 | if ( (n=IO_cread((PyObject*)self,&output,n)) < 0) return NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 181 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 182 | return PyString_FromStringAndSize(output, n); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 183 | } |
| 184 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 185 | PyDoc_STRVAR(IO_readline__doc__, "readline() -- Read one line"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 186 | |
| 187 | static int |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 188 | IO_creadline(PyObject *self, char **output) { |
| 189 | char *n, *s; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 190 | Py_ssize_t l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 191 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 192 | UNLESS (IO__opencheck(IOOOBJECT(self))) return -1; |
| 193 | |
| 194 | for (n = ((IOobject*)self)->buf + ((IOobject*)self)->pos, |
| 195 | s = ((IOobject*)self)->buf + ((IOobject*)self)->string_size; |
| 196 | n < s && *n != '\n'; n++); |
| 197 | if (n < s) n++; |
| 198 | |
| 199 | *output=((IOobject*)self)->buf + ((IOobject*)self)->pos; |
| 200 | l = n - ((IOobject*)self)->buf - ((IOobject*)self)->pos; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 201 | assert(((IOobject*)self)->pos + l < INT_MAX); |
| 202 | ((IOobject*)self)->pos += (int)l; |
| 203 | return (int)l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 207 | IO_readline(IOobject *self, PyObject *args) { |
| 208 | int n, m=-1; |
| 209 | char *output; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 210 | |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 211 | if (args) |
| 212 | UNLESS (PyArg_ParseTuple(args, "|i:readline", &m)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 213 | |
| 214 | if( (n=IO_creadline((PyObject*)self,&output)) < 0) return NULL; |
| 215 | if (m >= 0 && m < n) { |
| 216 | m = n - m; |
| 217 | n -= m; |
| 218 | self->pos -= m; |
| 219 | } |
| 220 | return PyString_FromStringAndSize(output, n); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 221 | } |
| 222 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 223 | PyDoc_STRVAR(IO_readlines__doc__, "readlines() -- Read all lines"); |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 224 | |
| 225 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 226 | IO_readlines(IOobject *self, PyObject *args) { |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 227 | int n; |
| 228 | char *output; |
| 229 | PyObject *result, *line; |
| 230 | int hint = 0, length = 0; |
| 231 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 232 | UNLESS (PyArg_ParseTuple(args, "|i:readlines", &hint)) return NULL; |
| 233 | |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 234 | result = PyList_New(0); |
| 235 | if (!result) |
| 236 | return NULL; |
| 237 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 238 | while (1){ |
| 239 | if ( (n = IO_creadline((PyObject*)self,&output)) < 0) |
| 240 | goto err; |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 241 | if (n == 0) |
| 242 | break; |
| 243 | line = PyString_FromStringAndSize (output, n); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 244 | if (!line) |
| 245 | goto err; |
Michael W. Hudson | 10402a3 | 2005-09-22 09:19:01 +0000 | [diff] [blame] | 246 | if (PyList_Append (result, line) == -1) { |
| 247 | Py_DECREF (line); |
| 248 | goto err; |
| 249 | } |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 250 | Py_DECREF (line); |
| 251 | length += n; |
| 252 | if (hint > 0 && length >= hint) |
| 253 | break; |
| 254 | } |
| 255 | return result; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 256 | err: |
| 257 | Py_DECREF(result); |
| 258 | return NULL; |
| 259 | } |
| 260 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 261 | PyDoc_STRVAR(IO_reset__doc__, |
| 262 | "reset() -- Reset the file position to the beginning"); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 263 | |
| 264 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 265 | IO_reset(IOobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 266 | |
| 267 | UNLESS (IO__opencheck(self)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 268 | |
| 269 | self->pos = 0; |
| 270 | |
| 271 | Py_INCREF(Py_None); |
| 272 | return Py_None; |
| 273 | } |
| 274 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 275 | PyDoc_STRVAR(IO_tell__doc__, "tell() -- get the current position."); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 276 | |
| 277 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 278 | IO_tell(IOobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 279 | |
| 280 | UNLESS (IO__opencheck(self)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 281 | |
Martin v. Löwis | ad0a462 | 2006-02-16 14:30:23 +0000 | [diff] [blame] | 282 | return PyInt_FromSsize_t(self->pos); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 283 | } |
| 284 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 285 | PyDoc_STRVAR(IO_truncate__doc__, |
| 286 | "truncate(): truncate the file at the current position."); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 287 | |
| 288 | static PyObject * |
| 289 | IO_truncate(IOobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 290 | Py_ssize_t pos = -1; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 291 | |
| 292 | UNLESS (IO__opencheck(self)) return NULL; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 293 | UNLESS (PyArg_ParseTuple(args, "|n:truncate", &pos)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 294 | if (pos < 0) pos = self->pos; |
| 295 | |
| 296 | if (self->string_size > pos) self->string_size = pos; |
Tim Peters | 037b3ee | 2004-08-21 06:55:43 +0000 | [diff] [blame] | 297 | self->pos = self->string_size; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 298 | |
| 299 | Py_INCREF(Py_None); |
| 300 | return Py_None; |
| 301 | } |
| 302 | |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 303 | static PyObject * |
| 304 | IO_iternext(Iobject *self) |
| 305 | { |
| 306 | PyObject *next; |
| 307 | next = IO_readline((IOobject *)self, NULL); |
| 308 | if (!next) |
| 309 | return NULL; |
| 310 | if (!PyString_GET_SIZE(next)) { |
| 311 | Py_DECREF(next); |
| 312 | PyErr_SetNone(PyExc_StopIteration); |
| 313 | return NULL; |
| 314 | } |
| 315 | return next; |
| 316 | } |
| 317 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 318 | |
| 319 | |
| 320 | |
| 321 | /* Read-write object methods */ |
| 322 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 323 | PyDoc_STRVAR(O_seek__doc__, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 324 | "seek(position) -- set the current position\n" |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 325 | "seek(position, mode) -- mode 0: absolute; 1: relative; 2: relative to EOF"); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 326 | |
| 327 | static PyObject * |
| 328 | O_seek(Oobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 329 | Py_ssize_t position; |
| 330 | int mode = 0; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 331 | |
| 332 | UNLESS (IO__opencheck(IOOOBJECT(self))) return NULL; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 333 | UNLESS (PyArg_ParseTuple(args, "n|i:seek", &position, &mode)) |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 334 | return NULL; |
| 335 | |
| 336 | if (mode == 2) { |
| 337 | position += self->string_size; |
| 338 | } |
| 339 | else if (mode == 1) { |
| 340 | position += self->pos; |
| 341 | } |
| 342 | |
| 343 | if (position > self->buf_size) { |
| 344 | self->buf_size*=2; |
| 345 | if (self->buf_size <= position) self->buf_size=position+1; |
Tim Peters | e7c0532 | 2004-06-27 17:24:49 +0000 | [diff] [blame] | 346 | UNLESS (self->buf = (char*) |
| 347 | realloc(self->buf,self->buf_size)) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 348 | self->buf_size=self->pos=0; |
| 349 | return PyErr_NoMemory(); |
| 350 | } |
| 351 | } |
| 352 | else if (position < 0) position=0; |
| 353 | |
| 354 | self->pos=position; |
| 355 | |
| 356 | while (--position >= self->string_size) self->buf[position]=0; |
| 357 | |
| 358 | Py_INCREF(Py_None); |
| 359 | return Py_None; |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 360 | } |
| 361 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 362 | PyDoc_STRVAR(O_write__doc__, |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 363 | "write(s) -- Write a string to the file" |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 364 | "\n\nNote (hack:) writing None resets the buffer"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 365 | |
| 366 | |
| 367 | static int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 368 | O_cwrite(PyObject *self, const char *c, Py_ssize_t l) { |
| 369 | Py_ssize_t newl; |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 370 | Oobject *oself; |
Guido van Rossum | 55702f8 | 1997-01-06 22:57:52 +0000 | [diff] [blame] | 371 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 372 | UNLESS (IO__opencheck(IOOOBJECT(self))) return -1; |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 373 | oself = (Oobject *)self; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 374 | |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 375 | newl = oself->pos+l; |
| 376 | if (newl >= oself->buf_size) { |
| 377 | oself->buf_size *= 2; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 378 | if (oself->buf_size <= newl) { |
| 379 | assert(newl + 1 < INT_MAX); |
| 380 | oself->buf_size = (int)(newl+1); |
| 381 | } |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 382 | UNLESS (oself->buf = |
Tim Peters | e7c0532 | 2004-06-27 17:24:49 +0000 | [diff] [blame] | 383 | (char*)realloc(oself->buf, oself->buf_size)) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 384 | PyErr_SetString(PyExc_MemoryError,"out of memory"); |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 385 | oself->buf_size = oself->pos = 0; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 386 | return -1; |
| 387 | } |
| 388 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 389 | |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 390 | memcpy(oself->buf+oself->pos,c,l); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 391 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 392 | assert(oself->pos + l < INT_MAX); |
| 393 | oself->pos += (int)l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 394 | |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 395 | if (oself->string_size < oself->pos) { |
| 396 | oself->string_size = oself->pos; |
| 397 | } |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 398 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 399 | return (int)l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 400 | } |
| 401 | |
| 402 | static PyObject * |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 403 | O_write(Oobject *self, PyObject *args) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 404 | char *c; |
| 405 | int l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 406 | |
Guido van Rossum | a883a3d | 2002-04-29 13:54:48 +0000 | [diff] [blame] | 407 | UNLESS (PyArg_ParseTuple(args, "t#:write", &c, &l)) return NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 408 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 409 | if (O_cwrite((PyObject*)self,c,l) < 0) return NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 410 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 411 | Py_INCREF(Py_None); |
| 412 | return Py_None; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 413 | } |
| 414 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 415 | PyDoc_STRVAR(O_close__doc__, "close(): explicitly release resources held."); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 416 | |
| 417 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 418 | O_close(Oobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 419 | if (self->buf != NULL) free(self->buf); |
| 420 | self->buf = NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 421 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 422 | self->pos = self->string_size = self->buf_size = 0; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 423 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 424 | Py_INCREF(Py_None); |
| 425 | return Py_None; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 426 | } |
| 427 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 428 | PyDoc_STRVAR(O_writelines__doc__, |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 429 | "writelines(sequence_of_strings) -> None. Write the strings to the file.\n" |
| 430 | "\n" |
| 431 | "Note that newlines are not added. The sequence can be any iterable object\n" |
| 432 | "producing strings. This is equivalent to calling write() for each string."); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 433 | static PyObject * |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 434 | O_writelines(Oobject *self, PyObject *args) { |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 435 | PyObject *it, *s; |
| 436 | |
| 437 | it = PyObject_GetIter(args); |
| 438 | if (it == NULL) |
Raymond Hettinger | bc72c5a | 2004-02-27 10:30:49 +0000 | [diff] [blame] | 439 | return NULL; |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 440 | while ((s = PyIter_Next(it)) != NULL) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 441 | Py_ssize_t n; |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 442 | char *c; |
| 443 | if (PyString_AsStringAndSize(s, &c, &n) == -1) { |
| 444 | Py_DECREF(it); |
| 445 | Py_DECREF(s); |
| 446 | return NULL; |
| 447 | } |
| 448 | if (O_cwrite((PyObject *)self, c, n) == -1) { |
| 449 | Py_DECREF(it); |
| 450 | Py_DECREF(s); |
| 451 | return NULL; |
Michael W. Hudson | 10402a3 | 2005-09-22 09:19:01 +0000 | [diff] [blame] | 452 | } |
| 453 | Py_DECREF(s); |
| 454 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 455 | |
Michael W. Hudson | 10402a3 | 2005-09-22 09:19:01 +0000 | [diff] [blame] | 456 | Py_DECREF(it); |
| 457 | |
| 458 | /* See if PyIter_Next failed */ |
| 459 | if (PyErr_Occurred()) |
| 460 | return NULL; |
| 461 | |
| 462 | Py_RETURN_NONE; |
| 463 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 464 | static struct PyMethodDef O_methods[] = { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 465 | /* Common methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 466 | {"flush", (PyCFunction)IO_flush, METH_NOARGS, IO_flush__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 467 | {"getvalue", (PyCFunction)IO_getval, METH_VARARGS, IO_getval__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 468 | {"isatty", (PyCFunction)IO_isatty, METH_NOARGS, IO_isatty__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 469 | {"read", (PyCFunction)IO_read, METH_VARARGS, IO_read__doc__}, |
| 470 | {"readline", (PyCFunction)IO_readline, METH_VARARGS, IO_readline__doc__}, |
| 471 | {"readlines", (PyCFunction)IO_readlines,METH_VARARGS, IO_readlines__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 472 | {"reset", (PyCFunction)IO_reset, METH_NOARGS, IO_reset__doc__}, |
| 473 | {"tell", (PyCFunction)IO_tell, METH_NOARGS, IO_tell__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 474 | {"truncate", (PyCFunction)IO_truncate, METH_VARARGS, IO_truncate__doc__}, |
| 475 | |
| 476 | /* Read-write StringIO specific methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 477 | {"close", (PyCFunction)O_close, METH_NOARGS, O_close__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 478 | {"seek", (PyCFunction)O_seek, METH_VARARGS, O_seek__doc__}, |
| 479 | {"write", (PyCFunction)O_write, METH_VARARGS, O_write__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 480 | {"writelines", (PyCFunction)O_writelines, METH_O, O_writelines__doc__}, |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 481 | {NULL, NULL} /* sentinel */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 482 | }; |
| 483 | |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 484 | static PyMemberDef O_memberlist[] = { |
| 485 | {"softspace", T_INT, offsetof(Oobject, softspace), 0, |
| 486 | "flag indicating that a space needs to be printed; used by print"}, |
Raymond Hettinger | 5475f23 | 2003-08-08 12:20:03 +0000 | [diff] [blame] | 487 | /* getattr(f, "closed") is implemented without this table */ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 488 | {NULL} /* Sentinel */ |
| 489 | }; |
| 490 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 491 | static void |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 492 | O_dealloc(Oobject *self) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 493 | if (self->buf != NULL) |
| 494 | free(self->buf); |
| 495 | PyObject_Del(self); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 496 | } |
| 497 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 498 | PyDoc_STRVAR(Otype__doc__, "Simple type for output to strings."); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 499 | |
| 500 | static PyTypeObject Otype = { |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 501 | PyObject_HEAD_INIT(NULL) |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 502 | 0, /*ob_size*/ |
Skip Montanaro | eb2f061 | 2003-08-11 14:51:15 +0000 | [diff] [blame] | 503 | "cStringIO.StringO", /*tp_name*/ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 504 | sizeof(Oobject), /*tp_basicsize*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 505 | 0, /*tp_itemsize*/ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 506 | /* methods */ |
| 507 | (destructor)O_dealloc, /*tp_dealloc*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 508 | (printfunc)0, /*tp_print*/ |
| 509 | 0, /*tp_getattr */ |
| 510 | 0, /*tp_setattr */ |
| 511 | (cmpfunc)0, /*tp_compare*/ |
| 512 | (reprfunc)0, /*tp_repr*/ |
| 513 | 0, /*tp_as_number*/ |
| 514 | 0, /*tp_as_sequence*/ |
| 515 | 0, /*tp_as_mapping*/ |
| 516 | (hashfunc)0, /*tp_hash*/ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 517 | (ternaryfunc)0, /*tp_call*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 518 | (reprfunc)0, /*tp_str*/ |
| 519 | 0, /*tp_getattro */ |
| 520 | 0, /*tp_setattro */ |
| 521 | 0, /*tp_as_buffer */ |
| 522 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ |
| 523 | Otype__doc__, /*tp_doc */ |
| 524 | 0, /*tp_traverse */ |
| 525 | 0, /*tp_clear */ |
| 526 | 0, /*tp_richcompare */ |
| 527 | 0, /*tp_weaklistoffset */ |
| 528 | PyObject_SelfIter, /*tp_iter */ |
| 529 | (iternextfunc)IO_iternext, /*tp_iternext */ |
| 530 | O_methods, /*tp_methods */ |
Raymond Hettinger | 5475f23 | 2003-08-08 12:20:03 +0000 | [diff] [blame] | 531 | O_memberlist, /*tp_members */ |
| 532 | file_getsetlist, /*tp_getset */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 533 | }; |
| 534 | |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 535 | static PyObject * |
| 536 | newOobject(int size) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 537 | Oobject *self; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 538 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 539 | self = PyObject_New(Oobject, &Otype); |
| 540 | if (self == NULL) |
| 541 | return NULL; |
| 542 | self->pos=0; |
| 543 | self->string_size = 0; |
| 544 | self->softspace = 0; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 545 | |
Tim Peters | e7c0532 | 2004-06-27 17:24:49 +0000 | [diff] [blame] | 546 | UNLESS (self->buf = (char *)malloc(size)) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 547 | PyErr_SetString(PyExc_MemoryError,"out of memory"); |
| 548 | self->buf_size = 0; |
| 549 | return NULL; |
| 550 | } |
| 551 | |
| 552 | self->buf_size=size; |
| 553 | return (PyObject*)self; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 554 | } |
| 555 | |
Skip Montanaro | e138828 | 2003-08-11 13:15:11 +0000 | [diff] [blame] | 556 | /* End of code for StringO objects */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 557 | /* -------------------------------------------------------- */ |
| 558 | |
| 559 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 560 | I_close(Iobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 561 | Py_XDECREF(self->pbuf); |
| 562 | self->pbuf = NULL; |
| 563 | self->buf = NULL; |
| 564 | |
| 565 | self->pos = self->string_size = 0; |
| 566 | |
| 567 | Py_INCREF(Py_None); |
| 568 | return Py_None; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 569 | } |
| 570 | |
| 571 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 572 | I_seek(Iobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 573 | Py_ssize_t position; |
| 574 | int mode = 0; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 575 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 576 | UNLESS (IO__opencheck(IOOOBJECT(self))) return NULL; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 577 | UNLESS (PyArg_ParseTuple(args, "n|i:seek", &position, &mode)) |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 578 | return NULL; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 579 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 580 | if (mode == 2) position += self->string_size; |
| 581 | else if (mode == 1) position += self->pos; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 582 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 583 | if (position < 0) position=0; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 584 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 585 | self->pos=position; |
| 586 | |
| 587 | Py_INCREF(Py_None); |
| 588 | return Py_None; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 589 | } |
| 590 | |
| 591 | static struct PyMethodDef I_methods[] = { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 592 | /* Common methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 593 | {"flush", (PyCFunction)IO_flush, METH_NOARGS, IO_flush__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 594 | {"getvalue", (PyCFunction)IO_getval, METH_VARARGS, IO_getval__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 595 | {"isatty", (PyCFunction)IO_isatty, METH_NOARGS, IO_isatty__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 596 | {"read", (PyCFunction)IO_read, METH_VARARGS, IO_read__doc__}, |
| 597 | {"readline", (PyCFunction)IO_readline, METH_VARARGS, IO_readline__doc__}, |
| 598 | {"readlines", (PyCFunction)IO_readlines,METH_VARARGS, IO_readlines__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 599 | {"reset", (PyCFunction)IO_reset, METH_NOARGS, IO_reset__doc__}, |
| 600 | {"tell", (PyCFunction)IO_tell, METH_NOARGS, IO_tell__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 601 | {"truncate", (PyCFunction)IO_truncate, METH_VARARGS, IO_truncate__doc__}, |
| 602 | |
| 603 | /* Read-only StringIO specific methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 604 | {"close", (PyCFunction)I_close, METH_NOARGS, O_close__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 605 | {"seek", (PyCFunction)I_seek, METH_VARARGS, O_seek__doc__}, |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 606 | {NULL, NULL} |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 607 | }; |
| 608 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 609 | static void |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 610 | I_dealloc(Iobject *self) { |
Guido van Rossum | 15a4039 | 1997-09-03 00:09:26 +0000 | [diff] [blame] | 611 | Py_XDECREF(self->pbuf); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 612 | PyObject_Del(self); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 613 | } |
| 614 | |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 615 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 616 | PyDoc_STRVAR(Itype__doc__, |
| 617 | "Simple type for treating strings as input file streams"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 618 | |
| 619 | static PyTypeObject Itype = { |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 620 | PyObject_HEAD_INIT(NULL) |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 621 | 0, /*ob_size*/ |
Skip Montanaro | eb2f061 | 2003-08-11 14:51:15 +0000 | [diff] [blame] | 622 | "cStringIO.StringI", /*tp_name*/ |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 623 | sizeof(Iobject), /*tp_basicsize*/ |
| 624 | 0, /*tp_itemsize*/ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 625 | /* methods */ |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 626 | (destructor)I_dealloc, /*tp_dealloc*/ |
| 627 | (printfunc)0, /*tp_print*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 628 | 0, /* tp_getattr */ |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 629 | (setattrfunc)0, /*tp_setattr*/ |
| 630 | (cmpfunc)0, /*tp_compare*/ |
| 631 | (reprfunc)0, /*tp_repr*/ |
| 632 | 0, /*tp_as_number*/ |
| 633 | 0, /*tp_as_sequence*/ |
| 634 | 0, /*tp_as_mapping*/ |
| 635 | (hashfunc)0, /*tp_hash*/ |
| 636 | (ternaryfunc)0, /*tp_call*/ |
| 637 | (reprfunc)0, /*tp_str*/ |
| 638 | 0, /* tp_getattro */ |
| 639 | 0, /* tp_setattro */ |
| 640 | 0, /* tp_as_buffer */ |
| 641 | Py_TPFLAGS_DEFAULT, /* tp_flags */ |
| 642 | Itype__doc__, /* tp_doc */ |
| 643 | 0, /* tp_traverse */ |
| 644 | 0, /* tp_clear */ |
| 645 | 0, /* tp_richcompare */ |
| 646 | 0, /* tp_weaklistoffset */ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 647 | PyObject_SelfIter, /* tp_iter */ |
| 648 | (iternextfunc)IO_iternext, /* tp_iternext */ |
Raymond Hettinger | 5475f23 | 2003-08-08 12:20:03 +0000 | [diff] [blame] | 649 | I_methods, /* tp_methods */ |
| 650 | 0, /* tp_members */ |
| 651 | file_getsetlist, /* tp_getset */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 652 | }; |
| 653 | |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 654 | static PyObject * |
| 655 | newIobject(PyObject *s) { |
| 656 | Iobject *self; |
| 657 | char *buf; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 658 | Py_ssize_t size; |
Jeremy Hylton | 127b2ef | 2000-04-12 22:04:01 +0000 | [diff] [blame] | 659 | |
Marc-André Lemburg | e47df7a | 2001-09-24 17:34:52 +0000 | [diff] [blame] | 660 | if (PyObject_AsReadBuffer(s, (const void **)&buf, &size)) { |
| 661 | PyErr_Format(PyExc_TypeError, "expected read buffer, %.200s found", |
Jeremy Hylton | 127b2ef | 2000-04-12 22:04:01 +0000 | [diff] [blame] | 662 | s->ob_type->tp_name); |
| 663 | return NULL; |
| 664 | } |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 665 | UNLESS (self = PyObject_New(Iobject, &Itype)) return NULL; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 666 | Py_INCREF(s); |
| 667 | self->buf=buf; |
| 668 | self->string_size=size; |
| 669 | self->pbuf=s; |
| 670 | self->pos=0; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 671 | |
| 672 | return (PyObject*)self; |
| 673 | } |
| 674 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 675 | /* End of code for StringI objects */ |
| 676 | /* -------------------------------------------------------- */ |
| 677 | |
| 678 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 679 | PyDoc_STRVAR(IO_StringIO__doc__, |
| 680 | "StringIO([s]) -- Return a StringIO-like stream for reading or writing"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 681 | |
| 682 | static PyObject * |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 683 | IO_StringIO(PyObject *self, PyObject *args) { |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 684 | PyObject *s=0; |
| 685 | |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 686 | if (!PyArg_UnpackTuple(args, "StringIO", 0, 1, &s)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 687 | |
| 688 | if (s) return newIobject(s); |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 689 | return newOobject(128); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | /* List of methods defined in the module */ |
| 693 | |
| 694 | static struct PyMethodDef IO_methods[] = { |
Andrew M. Kuchling | e365fb8 | 2000-08-03 02:06:16 +0000 | [diff] [blame] | 695 | {"StringIO", (PyCFunction)IO_StringIO, |
| 696 | METH_VARARGS, IO_StringIO__doc__}, |
Guido van Rossum | 55702f8 | 1997-01-06 22:57:52 +0000 | [diff] [blame] | 697 | {NULL, NULL} /* sentinel */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 698 | }; |
| 699 | |
| 700 | |
| 701 | /* Initialization function for the module (*must* be called initcStringIO) */ |
| 702 | |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 703 | static struct PycStringIO_CAPI CAPI = { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 704 | IO_cread, |
| 705 | IO_creadline, |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 706 | O_cwrite, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 707 | IO_cgetval, |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 708 | newOobject, |
| 709 | newIobject, |
| 710 | &Itype, |
| 711 | &Otype, |
| 712 | }; |
| 713 | |
Mark Hammond | fe51c6d | 2002-08-02 02:27:13 +0000 | [diff] [blame] | 714 | #ifndef PyMODINIT_FUNC /* declarations for DLL import/export */ |
| 715 | #define PyMODINIT_FUNC void |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 716 | #endif |
Mark Hammond | fe51c6d | 2002-08-02 02:27:13 +0000 | [diff] [blame] | 717 | PyMODINIT_FUNC |
Thomas Wouters | 58d0510 | 2000-07-24 14:43:35 +0000 | [diff] [blame] | 718 | initcStringIO(void) { |
Guido van Rossum | 9efe8ef | 1997-09-03 18:19:40 +0000 | [diff] [blame] | 719 | PyObject *m, *d, *v; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 720 | |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 721 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 722 | /* Create the module and add the functions */ |
| 723 | m = Py_InitModule4("cStringIO", IO_methods, |
| 724 | cStringIO_module_documentation, |
| 725 | (PyObject*)NULL,PYTHON_API_VERSION); |
Neal Norwitz | 1ac754f | 2006-01-19 06:09:39 +0000 | [diff] [blame] | 726 | if (m == NULL) return; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 727 | |
| 728 | /* Add some symbolic constants to the module */ |
| 729 | d = PyModule_GetDict(m); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 730 | |
Guido van Rossum | 55702f8 | 1997-01-06 22:57:52 +0000 | [diff] [blame] | 731 | /* Export C API */ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 732 | Itype.ob_type=&PyType_Type; |
| 733 | Otype.ob_type=&PyType_Type; |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 734 | if (PyType_Ready(&Otype) < 0) return; |
| 735 | if (PyType_Ready(&Itype) < 0) return; |
Guido van Rossum | 9efe8ef | 1997-09-03 18:19:40 +0000 | [diff] [blame] | 736 | PyDict_SetItemString(d,"cStringIO_CAPI", |
| 737 | v = PyCObject_FromVoidPtr(&CAPI,NULL)); |
| 738 | Py_XDECREF(v); |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 739 | |
| 740 | /* Export Types */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 741 | PyDict_SetItemString(d,"InputType", (PyObject*)&Itype); |
| 742 | PyDict_SetItemString(d,"OutputType", (PyObject*)&Otype); |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 743 | |
| 744 | /* Maybe make certain warnings go away */ |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 745 | if (0) PycString_IMPORT; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 746 | } |