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 | /* Declaration for file-like objects that manage data as strings |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 37 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 38 | The IOobject type should be though of as a common base type for |
| 39 | Iobjects, which provide input (read-only) StringIO objects and |
| 40 | Oobjects, which provide read-write objects. Most of the methods |
| 41 | depend only on common data. |
| 42 | */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 43 | |
| 44 | typedef struct { |
| 45 | PyObject_HEAD |
| 46 | char *buf; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 47 | Py_ssize_t pos, string_size; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 48 | } IOobject; |
| 49 | |
| 50 | #define IOOOBJECT(O) ((IOobject*)(O)) |
| 51 | |
Skip Montanaro | e138828 | 2003-08-11 13:15:11 +0000 | [diff] [blame] | 52 | /* Declarations for objects of type StringO */ |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 53 | |
| 54 | typedef struct { /* Subtype of IOobject */ |
| 55 | PyObject_HEAD |
| 56 | char *buf; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 57 | Py_ssize_t pos, string_size; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 58 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 59 | Py_ssize_t buf_size; |
| 60 | int softspace; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 61 | } Oobject; |
| 62 | |
| 63 | /* Declarations for objects of type StringI */ |
| 64 | |
| 65 | typedef struct { /* Subtype of IOobject */ |
| 66 | PyObject_HEAD |
| 67 | char *buf; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 68 | Py_ssize_t pos, string_size; |
Marc-André Lemburg | e47df7a | 2001-09-24 17:34:52 +0000 | [diff] [blame] | 69 | /* We store a reference to the object here in order to keep |
| 70 | the buffer alive during the lifetime of the Iobject. */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 71 | PyObject *pbuf; |
| 72 | } Iobject; |
| 73 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 74 | /* IOobject (common) methods */ |
| 75 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 76 | PyDoc_STRVAR(IO_flush__doc__, "flush(): does nothing."); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 77 | |
| 78 | static int |
| 79 | IO__opencheck(IOobject *self) { |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 80 | if (!self->buf) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 81 | PyErr_SetString(PyExc_ValueError, |
| 82 | "I/O operation on closed file"); |
| 83 | return 0; |
| 84 | } |
| 85 | return 1; |
| 86 | } |
| 87 | |
| 88 | static PyObject * |
Raymond Hettinger | 5475f23 | 2003-08-08 12:20:03 +0000 | [diff] [blame] | 89 | IO_get_closed(IOobject *self, void *closure) |
| 90 | { |
| 91 | PyObject *result = Py_False; |
| 92 | |
| 93 | if (self->buf == NULL) |
| 94 | result = Py_True; |
| 95 | Py_INCREF(result); |
| 96 | return result; |
| 97 | } |
| 98 | |
| 99 | static PyGetSetDef file_getsetlist[] = { |
| 100 | {"closed", (getter)IO_get_closed, NULL, "True if the file is closed"}, |
| 101 | {0}, |
| 102 | }; |
| 103 | |
| 104 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 105 | IO_flush(IOobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 106 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 107 | if (!IO__opencheck(self)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 108 | |
| 109 | Py_INCREF(Py_None); |
| 110 | return Py_None; |
| 111 | } |
| 112 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 113 | PyDoc_STRVAR(IO_getval__doc__, |
| 114 | "getvalue([use_pos]) -- Get the string value." |
| 115 | "\n" |
| 116 | "If use_pos is specified and is a true value, then the string returned\n" |
| 117 | "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] | 118 | |
| 119 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 120 | IO_cgetval(PyObject *self) { |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 121 | if (!IO__opencheck(IOOOBJECT(self))) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 122 | return PyString_FromStringAndSize(((IOobject*)self)->buf, |
| 123 | ((IOobject*)self)->pos); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 124 | } |
| 125 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 126 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 127 | IO_getval(IOobject *self, PyObject *args) { |
| 128 | PyObject *use_pos=Py_None; |
Martin v. Löwis | ad0a462 | 2006-02-16 14:30:23 +0000 | [diff] [blame] | 129 | Py_ssize_t s; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 130 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 131 | if (!IO__opencheck(self)) return NULL; |
| 132 | if (!PyArg_UnpackTuple(args,"getval", 0, 1,&use_pos)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 133 | |
| 134 | if (PyObject_IsTrue(use_pos)) { |
| 135 | s=self->pos; |
| 136 | if (s > self->string_size) s=self->string_size; |
| 137 | } |
| 138 | else |
| 139 | s=self->string_size; |
| 140 | return PyString_FromStringAndSize(self->buf, s); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 141 | } |
| 142 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 143 | PyDoc_STRVAR(IO_isatty__doc__, "isatty(): always returns 0"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 144 | |
| 145 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 146 | IO_isatty(IOobject *self, PyObject *unused) { |
Thomas Wouters | a977329 | 2006-04-21 09:43:23 +0000 | [diff] [blame] | 147 | if (!IO__opencheck(self)) return NULL; |
| 148 | Py_INCREF(Py_False); |
Guido van Rossum | 674deb2 | 2002-09-01 15:06:28 +0000 | [diff] [blame] | 149 | return Py_False; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 150 | } |
| 151 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 152 | PyDoc_STRVAR(IO_read__doc__, |
| 153 | "read([s]) -- Read s characters, or the rest of the string"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 154 | |
| 155 | static int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 156 | IO_cread(PyObject *self, char **output, Py_ssize_t n) { |
Martin v. Löwis | ad0a462 | 2006-02-16 14:30:23 +0000 | [diff] [blame] | 157 | Py_ssize_t l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 158 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 159 | if (!IO__opencheck(IOOOBJECT(self))) return -1; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 160 | l = ((IOobject*)self)->string_size - ((IOobject*)self)->pos; |
| 161 | if (n < 0 || n > l) { |
| 162 | n = l; |
| 163 | if (n < 0) n=0; |
| 164 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 165 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 166 | *output=((IOobject*)self)->buf + ((IOobject*)self)->pos; |
| 167 | ((IOobject*)self)->pos += n; |
| 168 | return n; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 172 | IO_read(IOobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 173 | Py_ssize_t n = -1; |
Thomas Wouters | f86d1e8 | 2006-03-01 22:15:15 +0000 | [diff] [blame] | 174 | char *output = NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 175 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 176 | if (!PyArg_ParseTuple(args, "|n:read", &n)) return NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 177 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 178 | if ( (n=IO_cread((PyObject*)self,&output,n)) < 0) 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 | return PyString_FromStringAndSize(output, n); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 181 | } |
| 182 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 183 | PyDoc_STRVAR(IO_readline__doc__, "readline() -- Read one line"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 184 | |
| 185 | static int |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 186 | IO_creadline(PyObject *self, char **output) { |
| 187 | char *n, *s; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 188 | Py_ssize_t l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 189 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 190 | if (!IO__opencheck(IOOOBJECT(self))) return -1; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 191 | |
| 192 | for (n = ((IOobject*)self)->buf + ((IOobject*)self)->pos, |
| 193 | s = ((IOobject*)self)->buf + ((IOobject*)self)->string_size; |
| 194 | n < s && *n != '\n'; n++); |
| 195 | if (n < s) n++; |
| 196 | |
| 197 | *output=((IOobject*)self)->buf + ((IOobject*)self)->pos; |
| 198 | l = n - ((IOobject*)self)->buf - ((IOobject*)self)->pos; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 199 | assert(((IOobject*)self)->pos + l < INT_MAX); |
| 200 | ((IOobject*)self)->pos += (int)l; |
| 201 | return (int)l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 205 | IO_readline(IOobject *self, PyObject *args) { |
| 206 | int n, m=-1; |
| 207 | char *output; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 208 | |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 209 | if (args) |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 210 | if (!PyArg_ParseTuple(args, "|i:readline", &m)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 211 | |
| 212 | if( (n=IO_creadline((PyObject*)self,&output)) < 0) return NULL; |
| 213 | if (m >= 0 && m < n) { |
| 214 | m = n - m; |
| 215 | n -= m; |
| 216 | self->pos -= m; |
| 217 | } |
| 218 | return PyString_FromStringAndSize(output, n); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 219 | } |
| 220 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 221 | PyDoc_STRVAR(IO_readlines__doc__, "readlines() -- Read all lines"); |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 222 | |
| 223 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 224 | IO_readlines(IOobject *self, PyObject *args) { |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 225 | int n; |
| 226 | char *output; |
| 227 | PyObject *result, *line; |
| 228 | int hint = 0, length = 0; |
| 229 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 230 | if (!PyArg_ParseTuple(args, "|i:readlines", &hint)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 231 | |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 232 | result = PyList_New(0); |
| 233 | if (!result) |
| 234 | return NULL; |
| 235 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 236 | while (1){ |
| 237 | if ( (n = IO_creadline((PyObject*)self,&output)) < 0) |
| 238 | goto err; |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 239 | if (n == 0) |
| 240 | break; |
| 241 | line = PyString_FromStringAndSize (output, n); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 242 | if (!line) |
| 243 | goto err; |
Michael W. Hudson | 10402a3 | 2005-09-22 09:19:01 +0000 | [diff] [blame] | 244 | if (PyList_Append (result, line) == -1) { |
| 245 | Py_DECREF (line); |
| 246 | goto err; |
| 247 | } |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 248 | Py_DECREF (line); |
| 249 | length += n; |
| 250 | if (hint > 0 && length >= hint) |
| 251 | break; |
| 252 | } |
| 253 | return result; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 254 | err: |
| 255 | Py_DECREF(result); |
| 256 | return NULL; |
| 257 | } |
| 258 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 259 | PyDoc_STRVAR(IO_reset__doc__, |
| 260 | "reset() -- Reset the file position to the beginning"); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 261 | |
| 262 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 263 | IO_reset(IOobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 264 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 265 | if (!IO__opencheck(self)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 266 | |
| 267 | self->pos = 0; |
| 268 | |
| 269 | Py_INCREF(Py_None); |
| 270 | return Py_None; |
| 271 | } |
| 272 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 273 | PyDoc_STRVAR(IO_tell__doc__, "tell() -- get the current position."); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 274 | |
| 275 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 276 | IO_tell(IOobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 277 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 278 | if (!IO__opencheck(self)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 279 | |
Martin v. Löwis | ad0a462 | 2006-02-16 14:30:23 +0000 | [diff] [blame] | 280 | return PyInt_FromSsize_t(self->pos); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 281 | } |
| 282 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 283 | PyDoc_STRVAR(IO_truncate__doc__, |
| 284 | "truncate(): truncate the file at the current position."); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 285 | |
| 286 | static PyObject * |
| 287 | IO_truncate(IOobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 288 | Py_ssize_t pos = -1; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 289 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 290 | if (!IO__opencheck(self)) return NULL; |
| 291 | if (!PyArg_ParseTuple(args, "|n:truncate", &pos)) return NULL; |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 292 | |
| 293 | if (PyTuple_Size(args) == 0) { |
| 294 | /* No argument passed, truncate to current position */ |
| 295 | pos = self->pos; |
| 296 | } |
| 297 | |
| 298 | if (pos < 0) { |
| 299 | errno = EINVAL; |
| 300 | PyErr_SetFromErrno(PyExc_IOError); |
| 301 | return NULL; |
| 302 | } |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 303 | |
| 304 | if (self->string_size > pos) self->string_size = pos; |
Tim Peters | 037b3ee | 2004-08-21 06:55:43 +0000 | [diff] [blame] | 305 | self->pos = self->string_size; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 306 | |
| 307 | Py_INCREF(Py_None); |
| 308 | return Py_None; |
| 309 | } |
| 310 | |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 311 | static PyObject * |
| 312 | IO_iternext(Iobject *self) |
| 313 | { |
| 314 | PyObject *next; |
| 315 | next = IO_readline((IOobject *)self, NULL); |
| 316 | if (!next) |
| 317 | return NULL; |
| 318 | if (!PyString_GET_SIZE(next)) { |
| 319 | Py_DECREF(next); |
| 320 | PyErr_SetNone(PyExc_StopIteration); |
| 321 | return NULL; |
| 322 | } |
| 323 | return next; |
| 324 | } |
| 325 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 326 | |
| 327 | |
| 328 | |
| 329 | /* Read-write object methods */ |
| 330 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 331 | PyDoc_STRVAR(O_seek__doc__, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 332 | "seek(position) -- set the current position\n" |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 333 | "seek(position, mode) -- mode 0: absolute; 1: relative; 2: relative to EOF"); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 334 | |
| 335 | static PyObject * |
| 336 | O_seek(Oobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 337 | Py_ssize_t position; |
| 338 | int mode = 0; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 339 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 340 | if (!IO__opencheck(IOOOBJECT(self))) return NULL; |
| 341 | if (!PyArg_ParseTuple(args, "n|i:seek", &position, &mode)) |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 342 | return NULL; |
| 343 | |
| 344 | if (mode == 2) { |
| 345 | position += self->string_size; |
| 346 | } |
| 347 | else if (mode == 1) { |
| 348 | position += self->pos; |
| 349 | } |
| 350 | |
| 351 | if (position > self->buf_size) { |
| 352 | self->buf_size*=2; |
| 353 | if (self->buf_size <= position) self->buf_size=position+1; |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 354 | self->buf = (char*) realloc(self->buf,self->buf_size); |
| 355 | if (!self->buf) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 356 | self->buf_size=self->pos=0; |
| 357 | return PyErr_NoMemory(); |
| 358 | } |
| 359 | } |
| 360 | else if (position < 0) position=0; |
| 361 | |
| 362 | self->pos=position; |
| 363 | |
| 364 | while (--position >= self->string_size) self->buf[position]=0; |
| 365 | |
| 366 | Py_INCREF(Py_None); |
| 367 | return Py_None; |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 368 | } |
| 369 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 370 | PyDoc_STRVAR(O_write__doc__, |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 371 | "write(s) -- Write a string to the file" |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 372 | "\n\nNote (hack:) writing None resets the buffer"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 373 | |
| 374 | |
| 375 | static int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 376 | O_cwrite(PyObject *self, const char *c, Py_ssize_t l) { |
| 377 | Py_ssize_t newl; |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 378 | Oobject *oself; |
Guido van Rossum | 55702f8 | 1997-01-06 22:57:52 +0000 | [diff] [blame] | 379 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 380 | if (!IO__opencheck(IOOOBJECT(self))) return -1; |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 381 | oself = (Oobject *)self; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 382 | |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 383 | newl = oself->pos+l; |
| 384 | if (newl >= oself->buf_size) { |
| 385 | oself->buf_size *= 2; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 386 | if (oself->buf_size <= newl) { |
| 387 | assert(newl + 1 < INT_MAX); |
| 388 | oself->buf_size = (int)(newl+1); |
| 389 | } |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 390 | oself->buf = (char*)realloc(oself->buf, oself->buf_size); |
| 391 | if (!oself->buf) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 392 | PyErr_SetString(PyExc_MemoryError,"out of memory"); |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 393 | oself->buf_size = oself->pos = 0; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 394 | return -1; |
| 395 | } |
| 396 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 397 | |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 398 | memcpy(oself->buf+oself->pos,c,l); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 399 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 400 | assert(oself->pos + l < INT_MAX); |
| 401 | oself->pos += (int)l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 402 | |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 403 | if (oself->string_size < oself->pos) { |
| 404 | oself->string_size = oself->pos; |
| 405 | } |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 406 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 407 | return (int)l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | static PyObject * |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 411 | O_write(Oobject *self, PyObject *args) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 412 | char *c; |
| 413 | int l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 414 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 415 | if (!PyArg_ParseTuple(args, "t#:write", &c, &l)) return NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 416 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 417 | if (O_cwrite((PyObject*)self,c,l) < 0) return NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 418 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 419 | Py_INCREF(Py_None); |
| 420 | return Py_None; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 421 | } |
| 422 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 423 | PyDoc_STRVAR(O_close__doc__, "close(): explicitly release resources held."); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 424 | |
| 425 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 426 | O_close(Oobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 427 | if (self->buf != NULL) free(self->buf); |
| 428 | self->buf = NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 429 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 430 | self->pos = self->string_size = self->buf_size = 0; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 431 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 432 | Py_INCREF(Py_None); |
| 433 | return Py_None; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 434 | } |
| 435 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 436 | PyDoc_STRVAR(O_writelines__doc__, |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 437 | "writelines(sequence_of_strings) -> None. Write the strings to the file.\n" |
| 438 | "\n" |
| 439 | "Note that newlines are not added. The sequence can be any iterable object\n" |
| 440 | "producing strings. This is equivalent to calling write() for each string."); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 441 | static PyObject * |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 442 | O_writelines(Oobject *self, PyObject *args) { |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 443 | PyObject *it, *s; |
| 444 | |
| 445 | it = PyObject_GetIter(args); |
| 446 | if (it == NULL) |
Raymond Hettinger | bc72c5a | 2004-02-27 10:30:49 +0000 | [diff] [blame] | 447 | return NULL; |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 448 | while ((s = PyIter_Next(it)) != NULL) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 449 | Py_ssize_t n; |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 450 | char *c; |
| 451 | if (PyString_AsStringAndSize(s, &c, &n) == -1) { |
| 452 | Py_DECREF(it); |
| 453 | Py_DECREF(s); |
| 454 | return NULL; |
| 455 | } |
| 456 | if (O_cwrite((PyObject *)self, c, n) == -1) { |
| 457 | Py_DECREF(it); |
| 458 | Py_DECREF(s); |
| 459 | return NULL; |
Michael W. Hudson | 10402a3 | 2005-09-22 09:19:01 +0000 | [diff] [blame] | 460 | } |
| 461 | Py_DECREF(s); |
| 462 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 463 | |
Michael W. Hudson | 10402a3 | 2005-09-22 09:19:01 +0000 | [diff] [blame] | 464 | Py_DECREF(it); |
| 465 | |
| 466 | /* See if PyIter_Next failed */ |
| 467 | if (PyErr_Occurred()) |
| 468 | return NULL; |
| 469 | |
| 470 | Py_RETURN_NONE; |
| 471 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 472 | static struct PyMethodDef O_methods[] = { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 473 | /* Common methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 474 | {"flush", (PyCFunction)IO_flush, METH_NOARGS, IO_flush__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 475 | {"getvalue", (PyCFunction)IO_getval, METH_VARARGS, IO_getval__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 476 | {"isatty", (PyCFunction)IO_isatty, METH_NOARGS, IO_isatty__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 477 | {"read", (PyCFunction)IO_read, METH_VARARGS, IO_read__doc__}, |
| 478 | {"readline", (PyCFunction)IO_readline, METH_VARARGS, IO_readline__doc__}, |
| 479 | {"readlines", (PyCFunction)IO_readlines,METH_VARARGS, IO_readlines__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 480 | {"reset", (PyCFunction)IO_reset, METH_NOARGS, IO_reset__doc__}, |
| 481 | {"tell", (PyCFunction)IO_tell, METH_NOARGS, IO_tell__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 482 | {"truncate", (PyCFunction)IO_truncate, METH_VARARGS, IO_truncate__doc__}, |
| 483 | |
| 484 | /* Read-write StringIO specific methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 485 | {"close", (PyCFunction)O_close, METH_NOARGS, O_close__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 486 | {"seek", (PyCFunction)O_seek, METH_VARARGS, O_seek__doc__}, |
| 487 | {"write", (PyCFunction)O_write, METH_VARARGS, O_write__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 488 | {"writelines", (PyCFunction)O_writelines, METH_O, O_writelines__doc__}, |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 489 | {NULL, NULL} /* sentinel */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 490 | }; |
| 491 | |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 492 | static PyMemberDef O_memberlist[] = { |
| 493 | {"softspace", T_INT, offsetof(Oobject, softspace), 0, |
| 494 | "flag indicating that a space needs to be printed; used by print"}, |
Raymond Hettinger | 5475f23 | 2003-08-08 12:20:03 +0000 | [diff] [blame] | 495 | /* getattr(f, "closed") is implemented without this table */ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 496 | {NULL} /* Sentinel */ |
| 497 | }; |
| 498 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 499 | static void |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 500 | O_dealloc(Oobject *self) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 501 | if (self->buf != NULL) |
| 502 | free(self->buf); |
| 503 | PyObject_Del(self); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 504 | } |
| 505 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 506 | PyDoc_STRVAR(Otype__doc__, "Simple type for output to strings."); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 507 | |
| 508 | static PyTypeObject Otype = { |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 509 | PyObject_HEAD_INIT(NULL) |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 510 | 0, /*ob_size*/ |
Skip Montanaro | eb2f061 | 2003-08-11 14:51:15 +0000 | [diff] [blame] | 511 | "cStringIO.StringO", /*tp_name*/ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 512 | sizeof(Oobject), /*tp_basicsize*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 513 | 0, /*tp_itemsize*/ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 514 | /* methods */ |
| 515 | (destructor)O_dealloc, /*tp_dealloc*/ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 516 | 0, /*tp_print*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 517 | 0, /*tp_getattr */ |
| 518 | 0, /*tp_setattr */ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 519 | 0, /*tp_compare*/ |
| 520 | 0, /*tp_repr*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 521 | 0, /*tp_as_number*/ |
| 522 | 0, /*tp_as_sequence*/ |
| 523 | 0, /*tp_as_mapping*/ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 524 | 0, /*tp_hash*/ |
| 525 | 0 , /*tp_call*/ |
| 526 | 0, /*tp_str*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 527 | 0, /*tp_getattro */ |
| 528 | 0, /*tp_setattro */ |
| 529 | 0, /*tp_as_buffer */ |
| 530 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ |
| 531 | Otype__doc__, /*tp_doc */ |
| 532 | 0, /*tp_traverse */ |
| 533 | 0, /*tp_clear */ |
| 534 | 0, /*tp_richcompare */ |
| 535 | 0, /*tp_weaklistoffset */ |
| 536 | PyObject_SelfIter, /*tp_iter */ |
| 537 | (iternextfunc)IO_iternext, /*tp_iternext */ |
| 538 | O_methods, /*tp_methods */ |
Raymond Hettinger | 5475f23 | 2003-08-08 12:20:03 +0000 | [diff] [blame] | 539 | O_memberlist, /*tp_members */ |
| 540 | file_getsetlist, /*tp_getset */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 541 | }; |
| 542 | |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 543 | static PyObject * |
| 544 | newOobject(int size) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 545 | Oobject *self; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 546 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 547 | self = PyObject_New(Oobject, &Otype); |
| 548 | if (self == NULL) |
| 549 | return NULL; |
| 550 | self->pos=0; |
| 551 | self->string_size = 0; |
| 552 | self->softspace = 0; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 553 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 554 | self->buf = (char *)malloc(size); |
| 555 | if (!self->buf) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 556 | PyErr_SetString(PyExc_MemoryError,"out of memory"); |
| 557 | self->buf_size = 0; |
Hye-Shik Chang | 4af5c8c | 2006-03-07 15:39:21 +0000 | [diff] [blame] | 558 | Py_DECREF(self); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 559 | return NULL; |
| 560 | } |
| 561 | |
| 562 | self->buf_size=size; |
| 563 | return (PyObject*)self; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 564 | } |
| 565 | |
Skip Montanaro | e138828 | 2003-08-11 13:15:11 +0000 | [diff] [blame] | 566 | /* End of code for StringO objects */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 567 | /* -------------------------------------------------------- */ |
| 568 | |
| 569 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 570 | I_close(Iobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 571 | Py_XDECREF(self->pbuf); |
| 572 | self->pbuf = NULL; |
| 573 | self->buf = NULL; |
| 574 | |
| 575 | self->pos = self->string_size = 0; |
| 576 | |
| 577 | Py_INCREF(Py_None); |
| 578 | return Py_None; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 582 | I_seek(Iobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 583 | Py_ssize_t position; |
| 584 | int mode = 0; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 585 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 586 | if (!IO__opencheck(IOOOBJECT(self))) return NULL; |
| 587 | if (!PyArg_ParseTuple(args, "n|i:seek", &position, &mode)) |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 588 | return NULL; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 589 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 590 | if (mode == 2) position += self->string_size; |
| 591 | else if (mode == 1) position += self->pos; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 592 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 593 | if (position < 0) position=0; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 594 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 595 | self->pos=position; |
| 596 | |
| 597 | Py_INCREF(Py_None); |
| 598 | return Py_None; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 599 | } |
| 600 | |
| 601 | static struct PyMethodDef I_methods[] = { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 602 | /* Common methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 603 | {"flush", (PyCFunction)IO_flush, METH_NOARGS, IO_flush__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 604 | {"getvalue", (PyCFunction)IO_getval, METH_VARARGS, IO_getval__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 605 | {"isatty", (PyCFunction)IO_isatty, METH_NOARGS, IO_isatty__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 606 | {"read", (PyCFunction)IO_read, METH_VARARGS, IO_read__doc__}, |
| 607 | {"readline", (PyCFunction)IO_readline, METH_VARARGS, IO_readline__doc__}, |
| 608 | {"readlines", (PyCFunction)IO_readlines,METH_VARARGS, IO_readlines__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 609 | {"reset", (PyCFunction)IO_reset, METH_NOARGS, IO_reset__doc__}, |
| 610 | {"tell", (PyCFunction)IO_tell, METH_NOARGS, IO_tell__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 611 | {"truncate", (PyCFunction)IO_truncate, METH_VARARGS, IO_truncate__doc__}, |
| 612 | |
| 613 | /* Read-only StringIO specific methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 614 | {"close", (PyCFunction)I_close, METH_NOARGS, O_close__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 615 | {"seek", (PyCFunction)I_seek, METH_VARARGS, O_seek__doc__}, |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 616 | {NULL, NULL} |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 617 | }; |
| 618 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 619 | static void |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 620 | I_dealloc(Iobject *self) { |
Guido van Rossum | 15a4039 | 1997-09-03 00:09:26 +0000 | [diff] [blame] | 621 | Py_XDECREF(self->pbuf); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 622 | PyObject_Del(self); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 623 | } |
| 624 | |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 625 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 626 | PyDoc_STRVAR(Itype__doc__, |
| 627 | "Simple type for treating strings as input file streams"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 628 | |
| 629 | static PyTypeObject Itype = { |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 630 | PyObject_HEAD_INIT(NULL) |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 631 | 0, /*ob_size*/ |
Skip Montanaro | eb2f061 | 2003-08-11 14:51:15 +0000 | [diff] [blame] | 632 | "cStringIO.StringI", /*tp_name*/ |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 633 | sizeof(Iobject), /*tp_basicsize*/ |
| 634 | 0, /*tp_itemsize*/ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 635 | /* methods */ |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 636 | (destructor)I_dealloc, /*tp_dealloc*/ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 637 | 0, /*tp_print*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 638 | 0, /* tp_getattr */ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 639 | 0, /*tp_setattr*/ |
| 640 | 0, /*tp_compare*/ |
| 641 | 0, /*tp_repr*/ |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 642 | 0, /*tp_as_number*/ |
| 643 | 0, /*tp_as_sequence*/ |
| 644 | 0, /*tp_as_mapping*/ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 645 | 0, /*tp_hash*/ |
| 646 | 0, /*tp_call*/ |
| 647 | 0, /*tp_str*/ |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 648 | 0, /* tp_getattro */ |
| 649 | 0, /* tp_setattro */ |
| 650 | 0, /* tp_as_buffer */ |
| 651 | Py_TPFLAGS_DEFAULT, /* tp_flags */ |
| 652 | Itype__doc__, /* tp_doc */ |
| 653 | 0, /* tp_traverse */ |
| 654 | 0, /* tp_clear */ |
| 655 | 0, /* tp_richcompare */ |
| 656 | 0, /* tp_weaklistoffset */ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 657 | PyObject_SelfIter, /* tp_iter */ |
| 658 | (iternextfunc)IO_iternext, /* tp_iternext */ |
Raymond Hettinger | 5475f23 | 2003-08-08 12:20:03 +0000 | [diff] [blame] | 659 | I_methods, /* tp_methods */ |
| 660 | 0, /* tp_members */ |
| 661 | file_getsetlist, /* tp_getset */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 662 | }; |
| 663 | |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 664 | static PyObject * |
| 665 | newIobject(PyObject *s) { |
| 666 | Iobject *self; |
| 667 | char *buf; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 668 | Py_ssize_t size; |
Jeremy Hylton | 127b2ef | 2000-04-12 22:04:01 +0000 | [diff] [blame] | 669 | |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 670 | if (PyObject_AsCharBuffer(s, (const char **)&buf, &size) != 0) |
Jeremy Hylton | 127b2ef | 2000-04-12 22:04:01 +0000 | [diff] [blame] | 671 | return NULL; |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 672 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 673 | self = PyObject_New(Iobject, &Itype); |
| 674 | if (!self) return NULL; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 675 | Py_INCREF(s); |
| 676 | self->buf=buf; |
| 677 | self->string_size=size; |
| 678 | self->pbuf=s; |
| 679 | self->pos=0; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 680 | |
| 681 | return (PyObject*)self; |
| 682 | } |
| 683 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 684 | /* End of code for StringI objects */ |
| 685 | /* -------------------------------------------------------- */ |
| 686 | |
| 687 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 688 | PyDoc_STRVAR(IO_StringIO__doc__, |
| 689 | "StringIO([s]) -- Return a StringIO-like stream for reading or writing"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 690 | |
| 691 | static PyObject * |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 692 | IO_StringIO(PyObject *self, PyObject *args) { |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 693 | PyObject *s=0; |
| 694 | |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 695 | if (!PyArg_UnpackTuple(args, "StringIO", 0, 1, &s)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 696 | |
| 697 | if (s) return newIobject(s); |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 698 | return newOobject(128); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 699 | } |
| 700 | |
| 701 | /* List of methods defined in the module */ |
| 702 | |
| 703 | static struct PyMethodDef IO_methods[] = { |
Andrew M. Kuchling | e365fb8 | 2000-08-03 02:06:16 +0000 | [diff] [blame] | 704 | {"StringIO", (PyCFunction)IO_StringIO, |
| 705 | METH_VARARGS, IO_StringIO__doc__}, |
Guido van Rossum | 55702f8 | 1997-01-06 22:57:52 +0000 | [diff] [blame] | 706 | {NULL, NULL} /* sentinel */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 707 | }; |
| 708 | |
| 709 | |
| 710 | /* Initialization function for the module (*must* be called initcStringIO) */ |
| 711 | |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 712 | static struct PycStringIO_CAPI CAPI = { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 713 | IO_cread, |
| 714 | IO_creadline, |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 715 | O_cwrite, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 716 | IO_cgetval, |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 717 | newOobject, |
| 718 | newIobject, |
| 719 | &Itype, |
| 720 | &Otype, |
| 721 | }; |
| 722 | |
Mark Hammond | fe51c6d | 2002-08-02 02:27:13 +0000 | [diff] [blame] | 723 | #ifndef PyMODINIT_FUNC /* declarations for DLL import/export */ |
| 724 | #define PyMODINIT_FUNC void |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 725 | #endif |
Mark Hammond | fe51c6d | 2002-08-02 02:27:13 +0000 | [diff] [blame] | 726 | PyMODINIT_FUNC |
Thomas Wouters | 58d0510 | 2000-07-24 14:43:35 +0000 | [diff] [blame] | 727 | initcStringIO(void) { |
Guido van Rossum | 9efe8ef | 1997-09-03 18:19:40 +0000 | [diff] [blame] | 728 | PyObject *m, *d, *v; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 729 | |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 730 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 731 | /* Create the module and add the functions */ |
| 732 | m = Py_InitModule4("cStringIO", IO_methods, |
| 733 | cStringIO_module_documentation, |
| 734 | (PyObject*)NULL,PYTHON_API_VERSION); |
Neal Norwitz | 1ac754f | 2006-01-19 06:09:39 +0000 | [diff] [blame] | 735 | if (m == NULL) return; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 736 | |
| 737 | /* Add some symbolic constants to the module */ |
| 738 | d = PyModule_GetDict(m); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 739 | |
Guido van Rossum | 55702f8 | 1997-01-06 22:57:52 +0000 | [diff] [blame] | 740 | /* Export C API */ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 741 | Itype.ob_type=&PyType_Type; |
| 742 | Otype.ob_type=&PyType_Type; |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 743 | if (PyType_Ready(&Otype) < 0) return; |
| 744 | if (PyType_Ready(&Itype) < 0) return; |
Guido van Rossum | 9efe8ef | 1997-09-03 18:19:40 +0000 | [diff] [blame] | 745 | PyDict_SetItemString(d,"cStringIO_CAPI", |
| 746 | v = PyCObject_FromVoidPtr(&CAPI,NULL)); |
| 747 | Py_XDECREF(v); |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 748 | |
| 749 | /* Export Types */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 750 | PyDict_SetItemString(d,"InputType", (PyObject*)&Itype); |
| 751 | PyDict_SetItemString(d,"OutputType", (PyObject*)&Otype); |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 752 | |
| 753 | /* Maybe make certain warnings go away */ |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 754 | if (0) PycString_IMPORT; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 755 | } |