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; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 60 | } Oobject; |
| 61 | |
| 62 | /* Declarations for objects of type StringI */ |
| 63 | |
| 64 | typedef struct { /* Subtype of IOobject */ |
| 65 | PyObject_HEAD |
| 66 | char *buf; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 67 | Py_ssize_t pos, string_size; |
Marc-André Lemburg | e47df7a | 2001-09-24 17:34:52 +0000 | [diff] [blame] | 68 | /* We store a reference to the object here in order to keep |
| 69 | the buffer alive during the lifetime of the Iobject. */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 70 | PyObject *pbuf; |
| 71 | } Iobject; |
| 72 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 73 | /* IOobject (common) methods */ |
| 74 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 75 | PyDoc_STRVAR(IO_flush__doc__, "flush(): does nothing."); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 76 | |
| 77 | static int |
| 78 | IO__opencheck(IOobject *self) { |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 79 | if (!self->buf) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 80 | PyErr_SetString(PyExc_ValueError, |
| 81 | "I/O operation on closed file"); |
| 82 | return 0; |
| 83 | } |
| 84 | return 1; |
| 85 | } |
| 86 | |
| 87 | static PyObject * |
Raymond Hettinger | 5475f23 | 2003-08-08 12:20:03 +0000 | [diff] [blame] | 88 | IO_get_closed(IOobject *self, void *closure) |
| 89 | { |
| 90 | PyObject *result = Py_False; |
| 91 | |
| 92 | if (self->buf == NULL) |
| 93 | result = Py_True; |
| 94 | Py_INCREF(result); |
| 95 | return result; |
| 96 | } |
| 97 | |
| 98 | static PyGetSetDef file_getsetlist[] = { |
| 99 | {"closed", (getter)IO_get_closed, NULL, "True if the file is closed"}, |
| 100 | {0}, |
| 101 | }; |
| 102 | |
| 103 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 104 | IO_flush(IOobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 105 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 106 | if (!IO__opencheck(self)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 107 | |
| 108 | Py_INCREF(Py_None); |
| 109 | return Py_None; |
| 110 | } |
| 111 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 112 | PyDoc_STRVAR(IO_getval__doc__, |
| 113 | "getvalue([use_pos]) -- Get the string value." |
| 114 | "\n" |
| 115 | "If use_pos is specified and is a true value, then the string returned\n" |
| 116 | "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] | 117 | |
| 118 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 119 | IO_cgetval(PyObject *self) { |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 120 | if (!IO__opencheck(IOOOBJECT(self))) return NULL; |
Martin v. Löwis | f3f0c61 | 2007-07-28 17:51:59 +0000 | [diff] [blame] | 121 | return PyBytes_FromStringAndSize(((IOobject*)self)->buf, |
| 122 | ((IOobject*)self)->pos); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 123 | } |
| 124 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 125 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 126 | IO_getval(IOobject *self, PyObject *args) { |
| 127 | PyObject *use_pos=Py_None; |
Martin v. Löwis | ad0a462 | 2006-02-16 14:30:23 +0000 | [diff] [blame] | 128 | Py_ssize_t s; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 129 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 130 | if (!IO__opencheck(self)) return NULL; |
| 131 | if (!PyArg_UnpackTuple(args,"getval", 0, 1,&use_pos)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 132 | |
| 133 | if (PyObject_IsTrue(use_pos)) { |
| 134 | s=self->pos; |
| 135 | if (s > self->string_size) s=self->string_size; |
| 136 | } |
| 137 | else |
| 138 | s=self->string_size; |
Martin v. Löwis | f3f0c61 | 2007-07-28 17:51:59 +0000 | [diff] [blame] | 139 | return PyBytes_FromStringAndSize(self->buf, s); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 140 | } |
| 141 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 142 | PyDoc_STRVAR(IO_isatty__doc__, "isatty(): always returns 0"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 143 | |
| 144 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 145 | IO_isatty(IOobject *self, PyObject *unused) { |
Thomas Wouters | a977329 | 2006-04-21 09:43:23 +0000 | [diff] [blame] | 146 | if (!IO__opencheck(self)) return NULL; |
| 147 | Py_INCREF(Py_False); |
Guido van Rossum | 674deb2 | 2002-09-01 15:06:28 +0000 | [diff] [blame] | 148 | return Py_False; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 149 | } |
| 150 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 151 | PyDoc_STRVAR(IO_read__doc__, |
| 152 | "read([s]) -- Read s characters, or the rest of the string"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 153 | |
| 154 | static int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 155 | IO_cread(PyObject *self, char **output, Py_ssize_t n) { |
Martin v. Löwis | ad0a462 | 2006-02-16 14:30:23 +0000 | [diff] [blame] | 156 | Py_ssize_t l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 157 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 158 | if (!IO__opencheck(IOOOBJECT(self))) return -1; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 159 | l = ((IOobject*)self)->string_size - ((IOobject*)self)->pos; |
| 160 | if (n < 0 || n > l) { |
| 161 | n = l; |
| 162 | if (n < 0) n=0; |
| 163 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 164 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 165 | *output=((IOobject*)self)->buf + ((IOobject*)self)->pos; |
| 166 | ((IOobject*)self)->pos += n; |
| 167 | return n; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 171 | IO_read(IOobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 172 | Py_ssize_t n = -1; |
Thomas Wouters | f86d1e8 | 2006-03-01 22:15:15 +0000 | [diff] [blame] | 173 | char *output = NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 174 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 175 | if (!PyArg_ParseTuple(args, "|n:read", &n)) return NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 176 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 177 | if ( (n=IO_cread((PyObject*)self,&output,n)) < 0) return NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 178 | |
Martin v. Löwis | f3f0c61 | 2007-07-28 17:51:59 +0000 | [diff] [blame] | 179 | return PyBytes_FromStringAndSize(output, n); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 180 | } |
| 181 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 182 | PyDoc_STRVAR(IO_readline__doc__, "readline() -- Read one line"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 183 | |
| 184 | static int |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 185 | IO_creadline(PyObject *self, char **output) { |
| 186 | char *n, *s; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 187 | Py_ssize_t l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 188 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 189 | if (!IO__opencheck(IOOOBJECT(self))) return -1; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 190 | |
| 191 | for (n = ((IOobject*)self)->buf + ((IOobject*)self)->pos, |
| 192 | s = ((IOobject*)self)->buf + ((IOobject*)self)->string_size; |
| 193 | n < s && *n != '\n'; n++); |
| 194 | if (n < s) n++; |
| 195 | |
| 196 | *output=((IOobject*)self)->buf + ((IOobject*)self)->pos; |
| 197 | l = n - ((IOobject*)self)->buf - ((IOobject*)self)->pos; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 198 | assert(((IOobject*)self)->pos + l < INT_MAX); |
| 199 | ((IOobject*)self)->pos += (int)l; |
| 200 | return (int)l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 201 | } |
| 202 | |
| 203 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 204 | IO_readline(IOobject *self, PyObject *args) { |
| 205 | int n, m=-1; |
| 206 | char *output; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 207 | |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 208 | if (args) |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 209 | if (!PyArg_ParseTuple(args, "|i:readline", &m)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 210 | |
| 211 | if( (n=IO_creadline((PyObject*)self,&output)) < 0) return NULL; |
| 212 | if (m >= 0 && m < n) { |
| 213 | m = n - m; |
| 214 | n -= m; |
| 215 | self->pos -= m; |
| 216 | } |
Martin v. Löwis | f3f0c61 | 2007-07-28 17:51:59 +0000 | [diff] [blame] | 217 | return PyBytes_FromStringAndSize(output, n); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 218 | } |
| 219 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 220 | PyDoc_STRVAR(IO_readlines__doc__, "readlines() -- Read all lines"); |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 221 | |
| 222 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 223 | IO_readlines(IOobject *self, PyObject *args) { |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 224 | int n; |
| 225 | char *output; |
| 226 | PyObject *result, *line; |
| 227 | int hint = 0, length = 0; |
| 228 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 229 | if (!PyArg_ParseTuple(args, "|i:readlines", &hint)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 230 | |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 231 | result = PyList_New(0); |
| 232 | if (!result) |
| 233 | return NULL; |
| 234 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 235 | while (1){ |
| 236 | if ( (n = IO_creadline((PyObject*)self,&output)) < 0) |
| 237 | goto err; |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 238 | if (n == 0) |
| 239 | break; |
Martin v. Löwis | f3f0c61 | 2007-07-28 17:51:59 +0000 | [diff] [blame] | 240 | line = PyBytes_FromStringAndSize (output, n); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 241 | if (!line) |
| 242 | goto err; |
Michael W. Hudson | 10402a3 | 2005-09-22 09:19:01 +0000 | [diff] [blame] | 243 | if (PyList_Append (result, line) == -1) { |
| 244 | Py_DECREF (line); |
| 245 | goto err; |
| 246 | } |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 247 | Py_DECREF (line); |
| 248 | length += n; |
| 249 | if (hint > 0 && length >= hint) |
| 250 | break; |
| 251 | } |
| 252 | return result; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 253 | err: |
| 254 | Py_DECREF(result); |
| 255 | return NULL; |
| 256 | } |
| 257 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 258 | PyDoc_STRVAR(IO_reset__doc__, |
| 259 | "reset() -- Reset the file position to the beginning"); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 260 | |
| 261 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 262 | IO_reset(IOobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 263 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 264 | if (!IO__opencheck(self)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 265 | |
| 266 | self->pos = 0; |
| 267 | |
| 268 | Py_INCREF(Py_None); |
| 269 | return Py_None; |
| 270 | } |
| 271 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 272 | PyDoc_STRVAR(IO_tell__doc__, "tell() -- get the current position."); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 273 | |
| 274 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 275 | IO_tell(IOobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 276 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 277 | if (!IO__opencheck(self)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 278 | |
Martin v. Löwis | ad0a462 | 2006-02-16 14:30:23 +0000 | [diff] [blame] | 279 | return PyInt_FromSsize_t(self->pos); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 280 | } |
| 281 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 282 | PyDoc_STRVAR(IO_truncate__doc__, |
| 283 | "truncate(): truncate the file at the current position."); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 284 | |
| 285 | static PyObject * |
| 286 | IO_truncate(IOobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 287 | Py_ssize_t pos = -1; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 288 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 289 | if (!IO__opencheck(self)) return NULL; |
| 290 | if (!PyArg_ParseTuple(args, "|n:truncate", &pos)) return NULL; |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 291 | |
| 292 | if (PyTuple_Size(args) == 0) { |
| 293 | /* No argument passed, truncate to current position */ |
| 294 | pos = self->pos; |
| 295 | } |
| 296 | |
| 297 | if (pos < 0) { |
| 298 | errno = EINVAL; |
| 299 | PyErr_SetFromErrno(PyExc_IOError); |
| 300 | return NULL; |
| 301 | } |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 302 | |
| 303 | if (self->string_size > pos) self->string_size = pos; |
Tim Peters | 037b3ee | 2004-08-21 06:55:43 +0000 | [diff] [blame] | 304 | self->pos = self->string_size; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 305 | |
| 306 | Py_INCREF(Py_None); |
| 307 | return Py_None; |
| 308 | } |
| 309 | |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 310 | static PyObject * |
| 311 | IO_iternext(Iobject *self) |
| 312 | { |
| 313 | PyObject *next; |
| 314 | next = IO_readline((IOobject *)self, NULL); |
| 315 | if (!next) |
| 316 | return NULL; |
Martin v. Löwis | f3f0c61 | 2007-07-28 17:51:59 +0000 | [diff] [blame] | 317 | if (!PyBytes_GET_SIZE(next)) { |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 318 | Py_DECREF(next); |
| 319 | PyErr_SetNone(PyExc_StopIteration); |
| 320 | return NULL; |
| 321 | } |
| 322 | return next; |
| 323 | } |
| 324 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 325 | |
| 326 | |
| 327 | |
| 328 | /* Read-write object methods */ |
| 329 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 330 | PyDoc_STRVAR(O_seek__doc__, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 331 | "seek(position) -- set the current position\n" |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 332 | "seek(position, mode) -- mode 0: absolute; 1: relative; 2: relative to EOF"); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 333 | |
| 334 | static PyObject * |
| 335 | O_seek(Oobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 336 | Py_ssize_t position; |
| 337 | int mode = 0; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 338 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 339 | if (!IO__opencheck(IOOOBJECT(self))) return NULL; |
| 340 | if (!PyArg_ParseTuple(args, "n|i:seek", &position, &mode)) |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 341 | return NULL; |
| 342 | |
| 343 | if (mode == 2) { |
| 344 | position += self->string_size; |
| 345 | } |
| 346 | else if (mode == 1) { |
| 347 | position += self->pos; |
| 348 | } |
| 349 | |
| 350 | if (position > self->buf_size) { |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 351 | char *newbuf; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 352 | self->buf_size*=2; |
| 353 | if (self->buf_size <= position) self->buf_size=position+1; |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 354 | newbuf = (char*) realloc(self->buf,self->buf_size); |
| 355 | if (!newbuf) { |
| 356 | free(self->buf); |
| 357 | self->buf = 0; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 358 | self->buf_size=self->pos=0; |
| 359 | return PyErr_NoMemory(); |
| 360 | } |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 361 | self->buf = newbuf; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 362 | } |
| 363 | else if (position < 0) position=0; |
| 364 | |
| 365 | self->pos=position; |
| 366 | |
| 367 | while (--position >= self->string_size) self->buf[position]=0; |
| 368 | |
| 369 | Py_INCREF(Py_None); |
| 370 | return Py_None; |
Martin v. Löwis | c912a3a | 2000-09-19 11:06:46 +0000 | [diff] [blame] | 371 | } |
| 372 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 373 | PyDoc_STRVAR(O_write__doc__, |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 374 | "write(s) -- Write a string to the file" |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 375 | "\n\nNote (hack:) writing None resets the buffer"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 376 | |
| 377 | |
| 378 | static int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 379 | O_cwrite(PyObject *self, const char *c, Py_ssize_t l) { |
| 380 | Py_ssize_t newl; |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 381 | Oobject *oself; |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 382 | char *newbuf; |
Guido van Rossum | 55702f8 | 1997-01-06 22:57:52 +0000 | [diff] [blame] | 383 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 384 | if (!IO__opencheck(IOOOBJECT(self))) return -1; |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 385 | oself = (Oobject *)self; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 386 | |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 387 | newl = oself->pos+l; |
| 388 | if (newl >= oself->buf_size) { |
| 389 | oself->buf_size *= 2; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 390 | if (oself->buf_size <= newl) { |
| 391 | assert(newl + 1 < INT_MAX); |
| 392 | oself->buf_size = (int)(newl+1); |
| 393 | } |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 394 | newbuf = (char*)realloc(oself->buf, oself->buf_size); |
| 395 | if (!newbuf) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 396 | PyErr_SetString(PyExc_MemoryError,"out of memory"); |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 397 | free(oself->buf); |
| 398 | oself->buf = 0; |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 399 | oself->buf_size = oself->pos = 0; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 400 | return -1; |
| 401 | } |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 402 | oself->buf = newbuf; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 403 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 404 | |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 405 | memcpy(oself->buf+oself->pos,c,l); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 406 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 407 | assert(oself->pos + l < INT_MAX); |
| 408 | oself->pos += (int)l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 409 | |
Guido van Rossum | 2f09812 | 2001-12-07 20:20:28 +0000 | [diff] [blame] | 410 | if (oself->string_size < oself->pos) { |
| 411 | oself->string_size = oself->pos; |
| 412 | } |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 413 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 414 | return (int)l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 415 | } |
| 416 | |
| 417 | static PyObject * |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 418 | O_write(Oobject *self, PyObject *args) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 419 | char *c; |
| 420 | int l; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 421 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 422 | if (!PyArg_ParseTuple(args, "t#:write", &c, &l)) return NULL; |
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 | if (O_cwrite((PyObject*)self,c,l) < 0) return NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 425 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 426 | Py_INCREF(Py_None); |
| 427 | return Py_None; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 428 | } |
| 429 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 430 | PyDoc_STRVAR(O_close__doc__, "close(): explicitly release resources held."); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 431 | |
| 432 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 433 | O_close(Oobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 434 | if (self->buf != NULL) free(self->buf); |
| 435 | self->buf = NULL; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 436 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 437 | self->pos = self->string_size = self->buf_size = 0; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 438 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 439 | Py_INCREF(Py_None); |
| 440 | return Py_None; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 441 | } |
| 442 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 443 | PyDoc_STRVAR(O_writelines__doc__, |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 444 | "writelines(sequence_of_strings) -> None. Write the strings to the file.\n" |
| 445 | "\n" |
| 446 | "Note that newlines are not added. The sequence can be any iterable object\n" |
| 447 | "producing strings. This is equivalent to calling write() for each string."); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 448 | static PyObject * |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 449 | O_writelines(Oobject *self, PyObject *args) { |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 450 | PyObject *it, *s; |
| 451 | |
| 452 | it = PyObject_GetIter(args); |
| 453 | if (it == NULL) |
Raymond Hettinger | bc72c5a | 2004-02-27 10:30:49 +0000 | [diff] [blame] | 454 | return NULL; |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 455 | while ((s = PyIter_Next(it)) != NULL) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 456 | Py_ssize_t n; |
Raymond Hettinger | 6ec0996 | 2004-03-08 18:17:31 +0000 | [diff] [blame] | 457 | char *c; |
| 458 | if (PyString_AsStringAndSize(s, &c, &n) == -1) { |
| 459 | Py_DECREF(it); |
| 460 | Py_DECREF(s); |
| 461 | return NULL; |
| 462 | } |
| 463 | if (O_cwrite((PyObject *)self, c, n) == -1) { |
| 464 | Py_DECREF(it); |
| 465 | Py_DECREF(s); |
| 466 | return NULL; |
Michael W. Hudson | 10402a3 | 2005-09-22 09:19:01 +0000 | [diff] [blame] | 467 | } |
| 468 | Py_DECREF(s); |
| 469 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 470 | |
Michael W. Hudson | 10402a3 | 2005-09-22 09:19:01 +0000 | [diff] [blame] | 471 | Py_DECREF(it); |
| 472 | |
| 473 | /* See if PyIter_Next failed */ |
| 474 | if (PyErr_Occurred()) |
| 475 | return NULL; |
| 476 | |
| 477 | Py_RETURN_NONE; |
| 478 | } |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 479 | static struct PyMethodDef O_methods[] = { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 480 | /* Common methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 481 | {"flush", (PyCFunction)IO_flush, METH_NOARGS, IO_flush__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 482 | {"getvalue", (PyCFunction)IO_getval, METH_VARARGS, IO_getval__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 483 | {"isatty", (PyCFunction)IO_isatty, METH_NOARGS, IO_isatty__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 484 | {"read", (PyCFunction)IO_read, METH_VARARGS, IO_read__doc__}, |
| 485 | {"readline", (PyCFunction)IO_readline, METH_VARARGS, IO_readline__doc__}, |
| 486 | {"readlines", (PyCFunction)IO_readlines,METH_VARARGS, IO_readlines__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 487 | {"reset", (PyCFunction)IO_reset, METH_NOARGS, IO_reset__doc__}, |
| 488 | {"tell", (PyCFunction)IO_tell, METH_NOARGS, IO_tell__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 489 | {"truncate", (PyCFunction)IO_truncate, METH_VARARGS, IO_truncate__doc__}, |
| 490 | |
| 491 | /* Read-write StringIO specific methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 492 | {"close", (PyCFunction)O_close, METH_NOARGS, O_close__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 493 | {"seek", (PyCFunction)O_seek, METH_VARARGS, O_seek__doc__}, |
| 494 | {"write", (PyCFunction)O_write, METH_VARARGS, O_write__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 495 | {"writelines", (PyCFunction)O_writelines, METH_O, O_writelines__doc__}, |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 496 | {NULL, NULL} /* sentinel */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 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 = { |
Martin v. Löwis | 9f2e346 | 2007-07-21 17:22:18 +0000 | [diff] [blame] | 509 | PyVarObject_HEAD_INIT(NULL, 0) |
Skip Montanaro | eb2f061 | 2003-08-11 14:51:15 +0000 | [diff] [blame] | 510 | "cStringIO.StringO", /*tp_name*/ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 511 | sizeof(Oobject), /*tp_basicsize*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 512 | 0, /*tp_itemsize*/ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 513 | /* methods */ |
| 514 | (destructor)O_dealloc, /*tp_dealloc*/ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 515 | 0, /*tp_print*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 516 | 0, /*tp_getattr */ |
| 517 | 0, /*tp_setattr */ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 518 | 0, /*tp_compare*/ |
| 519 | 0, /*tp_repr*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 520 | 0, /*tp_as_number*/ |
| 521 | 0, /*tp_as_sequence*/ |
| 522 | 0, /*tp_as_mapping*/ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 523 | 0, /*tp_hash*/ |
| 524 | 0 , /*tp_call*/ |
| 525 | 0, /*tp_str*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 526 | 0, /*tp_getattro */ |
| 527 | 0, /*tp_setattro */ |
| 528 | 0, /*tp_as_buffer */ |
| 529 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ |
| 530 | Otype__doc__, /*tp_doc */ |
| 531 | 0, /*tp_traverse */ |
| 532 | 0, /*tp_clear */ |
| 533 | 0, /*tp_richcompare */ |
| 534 | 0, /*tp_weaklistoffset */ |
| 535 | PyObject_SelfIter, /*tp_iter */ |
| 536 | (iternextfunc)IO_iternext, /*tp_iternext */ |
| 537 | O_methods, /*tp_methods */ |
Guido van Rossum | 79139b2 | 2007-02-09 23:20:19 +0000 | [diff] [blame] | 538 | 0, /*tp_members */ |
Raymond Hettinger | 5475f23 | 2003-08-08 12:20:03 +0000 | [diff] [blame] | 539 | file_getsetlist, /*tp_getset */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 540 | }; |
| 541 | |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 542 | static PyObject * |
| 543 | newOobject(int size) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 544 | Oobject *self; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 545 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 546 | self = PyObject_New(Oobject, &Otype); |
| 547 | if (self == NULL) |
| 548 | return NULL; |
| 549 | self->pos=0; |
| 550 | self->string_size = 0; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 551 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 552 | self->buf = (char *)malloc(size); |
| 553 | if (!self->buf) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 554 | PyErr_SetString(PyExc_MemoryError,"out of memory"); |
| 555 | self->buf_size = 0; |
Hye-Shik Chang | 4af5c8c | 2006-03-07 15:39:21 +0000 | [diff] [blame] | 556 | Py_DECREF(self); |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 557 | return NULL; |
| 558 | } |
| 559 | |
| 560 | self->buf_size=size; |
| 561 | return (PyObject*)self; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 562 | } |
| 563 | |
Skip Montanaro | e138828 | 2003-08-11 13:15:11 +0000 | [diff] [blame] | 564 | /* End of code for StringO objects */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 565 | /* -------------------------------------------------------- */ |
| 566 | |
| 567 | static PyObject * |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 568 | I_close(Iobject *self, PyObject *unused) { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 569 | Py_XDECREF(self->pbuf); |
| 570 | self->pbuf = NULL; |
| 571 | self->buf = NULL; |
| 572 | |
| 573 | self->pos = self->string_size = 0; |
| 574 | |
| 575 | Py_INCREF(Py_None); |
| 576 | return Py_None; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 577 | } |
| 578 | |
| 579 | static PyObject * |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 580 | I_seek(Iobject *self, PyObject *args) { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 581 | Py_ssize_t position; |
| 582 | int mode = 0; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 583 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 584 | if (!IO__opencheck(IOOOBJECT(self))) return NULL; |
| 585 | if (!PyArg_ParseTuple(args, "n|i:seek", &position, &mode)) |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 586 | return NULL; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 587 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 588 | if (mode == 2) position += self->string_size; |
| 589 | else if (mode == 1) position += self->pos; |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 590 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 591 | if (position < 0) position=0; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 592 | |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 593 | self->pos=position; |
| 594 | |
| 595 | Py_INCREF(Py_None); |
| 596 | return Py_None; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 597 | } |
| 598 | |
| 599 | static struct PyMethodDef I_methods[] = { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 600 | /* Common methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 601 | {"flush", (PyCFunction)IO_flush, METH_NOARGS, IO_flush__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 602 | {"getvalue", (PyCFunction)IO_getval, METH_VARARGS, IO_getval__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 603 | {"isatty", (PyCFunction)IO_isatty, METH_NOARGS, IO_isatty__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 604 | {"read", (PyCFunction)IO_read, METH_VARARGS, IO_read__doc__}, |
| 605 | {"readline", (PyCFunction)IO_readline, METH_VARARGS, IO_readline__doc__}, |
| 606 | {"readlines", (PyCFunction)IO_readlines,METH_VARARGS, IO_readlines__doc__}, |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 607 | {"reset", (PyCFunction)IO_reset, METH_NOARGS, IO_reset__doc__}, |
| 608 | {"tell", (PyCFunction)IO_tell, METH_NOARGS, IO_tell__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 609 | {"truncate", (PyCFunction)IO_truncate, METH_VARARGS, IO_truncate__doc__}, |
| 610 | |
| 611 | /* Read-only StringIO specific methods: */ |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 612 | {"close", (PyCFunction)I_close, METH_NOARGS, O_close__doc__}, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 613 | {"seek", (PyCFunction)I_seek, METH_VARARGS, O_seek__doc__}, |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 614 | {NULL, NULL} |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 615 | }; |
| 616 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 617 | static void |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 618 | I_dealloc(Iobject *self) { |
Guido van Rossum | 15a4039 | 1997-09-03 00:09:26 +0000 | [diff] [blame] | 619 | Py_XDECREF(self->pbuf); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 620 | PyObject_Del(self); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 621 | } |
| 622 | |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 623 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 624 | PyDoc_STRVAR(Itype__doc__, |
| 625 | "Simple type for treating strings as input file streams"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 626 | |
| 627 | static PyTypeObject Itype = { |
Martin v. Löwis | 9f2e346 | 2007-07-21 17:22:18 +0000 | [diff] [blame] | 628 | PyVarObject_HEAD_INIT(NULL, 0) |
Skip Montanaro | eb2f061 | 2003-08-11 14:51:15 +0000 | [diff] [blame] | 629 | "cStringIO.StringI", /*tp_name*/ |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 630 | sizeof(Iobject), /*tp_basicsize*/ |
| 631 | 0, /*tp_itemsize*/ |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 632 | /* methods */ |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 633 | (destructor)I_dealloc, /*tp_dealloc*/ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 634 | 0, /*tp_print*/ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 635 | 0, /* tp_getattr */ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 636 | 0, /*tp_setattr*/ |
| 637 | 0, /*tp_compare*/ |
| 638 | 0, /*tp_repr*/ |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 639 | 0, /*tp_as_number*/ |
| 640 | 0, /*tp_as_sequence*/ |
| 641 | 0, /*tp_as_mapping*/ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 642 | 0, /*tp_hash*/ |
| 643 | 0, /*tp_call*/ |
| 644 | 0, /*tp_str*/ |
Barry Warsaw | 3e8be72 | 2001-09-22 04:36:49 +0000 | [diff] [blame] | 645 | 0, /* tp_getattro */ |
| 646 | 0, /* tp_setattro */ |
| 647 | 0, /* tp_as_buffer */ |
| 648 | Py_TPFLAGS_DEFAULT, /* tp_flags */ |
| 649 | Itype__doc__, /* tp_doc */ |
| 650 | 0, /* tp_traverse */ |
| 651 | 0, /* tp_clear */ |
| 652 | 0, /* tp_richcompare */ |
| 653 | 0, /* tp_weaklistoffset */ |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 654 | PyObject_SelfIter, /* tp_iter */ |
| 655 | (iternextfunc)IO_iternext, /* tp_iternext */ |
Raymond Hettinger | 5475f23 | 2003-08-08 12:20:03 +0000 | [diff] [blame] | 656 | I_methods, /* tp_methods */ |
| 657 | 0, /* tp_members */ |
| 658 | file_getsetlist, /* tp_getset */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 659 | }; |
| 660 | |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 661 | static PyObject * |
| 662 | newIobject(PyObject *s) { |
| 663 | Iobject *self; |
| 664 | char *buf; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 665 | Py_ssize_t size; |
Jeremy Hylton | 127b2ef | 2000-04-12 22:04:01 +0000 | [diff] [blame] | 666 | |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 667 | if (PyObject_AsCharBuffer(s, (const char **)&buf, &size) != 0) |
Jeremy Hylton | 127b2ef | 2000-04-12 22:04:01 +0000 | [diff] [blame] | 668 | return NULL; |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 669 | |
Martin v. Löwis | 5df2e61 | 2006-03-01 23:10:49 +0000 | [diff] [blame] | 670 | self = PyObject_New(Iobject, &Itype); |
| 671 | if (!self) return NULL; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 672 | Py_INCREF(s); |
| 673 | self->buf=buf; |
| 674 | self->string_size=size; |
| 675 | self->pbuf=s; |
| 676 | self->pos=0; |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 677 | |
| 678 | return (PyObject*)self; |
| 679 | } |
| 680 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 681 | /* End of code for StringI objects */ |
| 682 | /* -------------------------------------------------------- */ |
| 683 | |
| 684 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 685 | PyDoc_STRVAR(IO_StringIO__doc__, |
| 686 | "StringIO([s]) -- Return a StringIO-like stream for reading or writing"); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 687 | |
| 688 | static PyObject * |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 689 | IO_StringIO(PyObject *self, PyObject *args) { |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 690 | PyObject *s=0; |
| 691 | |
Raymond Hettinger | 36cd2bf | 2003-01-03 08:24:58 +0000 | [diff] [blame] | 692 | if (!PyArg_UnpackTuple(args, "StringIO", 0, 1, &s)) return NULL; |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 693 | |
| 694 | if (s) return newIobject(s); |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 695 | return newOobject(128); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 696 | } |
| 697 | |
| 698 | /* List of methods defined in the module */ |
| 699 | |
| 700 | static struct PyMethodDef IO_methods[] = { |
Andrew M. Kuchling | e365fb8 | 2000-08-03 02:06:16 +0000 | [diff] [blame] | 701 | {"StringIO", (PyCFunction)IO_StringIO, |
| 702 | METH_VARARGS, IO_StringIO__doc__}, |
Guido van Rossum | 55702f8 | 1997-01-06 22:57:52 +0000 | [diff] [blame] | 703 | {NULL, NULL} /* sentinel */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 704 | }; |
| 705 | |
| 706 | |
| 707 | /* Initialization function for the module (*must* be called initcStringIO) */ |
| 708 | |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 709 | static struct PycStringIO_CAPI CAPI = { |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 710 | IO_cread, |
| 711 | IO_creadline, |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 712 | O_cwrite, |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 713 | IO_cgetval, |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 714 | newOobject, |
| 715 | newIobject, |
| 716 | &Itype, |
| 717 | &Otype, |
| 718 | }; |
| 719 | |
Mark Hammond | fe51c6d | 2002-08-02 02:27:13 +0000 | [diff] [blame] | 720 | #ifndef PyMODINIT_FUNC /* declarations for DLL import/export */ |
| 721 | #define PyMODINIT_FUNC void |
Guido van Rossum | 476e49f | 1998-12-15 21:43:15 +0000 | [diff] [blame] | 722 | #endif |
Mark Hammond | fe51c6d | 2002-08-02 02:27:13 +0000 | [diff] [blame] | 723 | PyMODINIT_FUNC |
Thomas Wouters | 58d0510 | 2000-07-24 14:43:35 +0000 | [diff] [blame] | 724 | initcStringIO(void) { |
Guido van Rossum | 9efe8ef | 1997-09-03 18:19:40 +0000 | [diff] [blame] | 725 | PyObject *m, *d, *v; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 726 | |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 727 | |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 728 | /* Create the module and add the functions */ |
| 729 | m = Py_InitModule4("cStringIO", IO_methods, |
| 730 | cStringIO_module_documentation, |
| 731 | (PyObject*)NULL,PYTHON_API_VERSION); |
Neal Norwitz | 1ac754f | 2006-01-19 06:09:39 +0000 | [diff] [blame] | 732 | if (m == NULL) return; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 733 | |
| 734 | /* Add some symbolic constants to the module */ |
| 735 | d = PyModule_GetDict(m); |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 736 | |
Guido van Rossum | 55702f8 | 1997-01-06 22:57:52 +0000 | [diff] [blame] | 737 | /* Export C API */ |
Martin v. Löwis | 9f2e346 | 2007-07-21 17:22:18 +0000 | [diff] [blame] | 738 | Py_Type(&Itype)=&PyType_Type; |
| 739 | Py_Type(&Otype)=&PyType_Type; |
Raymond Hettinger | 352f947 | 2003-04-24 15:50:11 +0000 | [diff] [blame] | 740 | if (PyType_Ready(&Otype) < 0) return; |
| 741 | if (PyType_Ready(&Itype) < 0) return; |
Guido van Rossum | 9efe8ef | 1997-09-03 18:19:40 +0000 | [diff] [blame] | 742 | PyDict_SetItemString(d,"cStringIO_CAPI", |
| 743 | v = PyCObject_FromVoidPtr(&CAPI,NULL)); |
| 744 | Py_XDECREF(v); |
Guido van Rossum | 154417e | 1997-04-09 17:35:33 +0000 | [diff] [blame] | 745 | |
| 746 | /* Export Types */ |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 747 | PyDict_SetItemString(d,"InputType", (PyObject*)&Itype); |
| 748 | PyDict_SetItemString(d,"OutputType", (PyObject*)&Otype); |
Guido van Rossum | 142eeb8 | 1997-08-13 03:14:41 +0000 | [diff] [blame] | 749 | |
| 750 | /* Maybe make certain warnings go away */ |
Jim Fulton | e60de4d | 2000-10-06 19:24:23 +0000 | [diff] [blame] | 751 | if (0) PycString_IMPORT; |
Guido van Rossum | 049cd90 | 1996-12-05 23:30:48 +0000 | [diff] [blame] | 752 | } |