Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 1 | |
| 2 | /* DBM module using dictionary interface */ |
| 3 | |
| 4 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 5 | #include "Python.h" |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 6 | |
| 7 | #include <sys/types.h> |
| 8 | #include <sys/stat.h> |
| 9 | #include <fcntl.h> |
Fred Drake | d94f707 | 2000-09-14 15:48:06 +0000 | [diff] [blame] | 10 | |
| 11 | /* Some Linux systems install gdbm/ndbm.h, but not ndbm.h. This supports |
| 12 | * whichever configure was able to locate. |
| 13 | */ |
| 14 | #if defined(HAVE_NDBM_H) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 15 | #include <ndbm.h> |
Andrew MacIntyre | 7bf6833 | 2002-03-03 02:59:16 +0000 | [diff] [blame] | 16 | #if defined(PYOS_OS2) && !defined(PYCC_GCC) |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 17 | static char *which_dbm = "ndbm"; |
Andrew MacIntyre | 7bf6833 | 2002-03-03 02:59:16 +0000 | [diff] [blame] | 18 | #else |
| 19 | static char *which_dbm = "GNU gdbm"; /* EMX port of GDBM */ |
| 20 | #endif |
Fred Drake | d94f707 | 2000-09-14 15:48:06 +0000 | [diff] [blame] | 21 | #elif defined(HAVE_GDBM_NDBM_H) |
| 22 | #include <gdbm/ndbm.h> |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 23 | static char *which_dbm = "GNU gdbm"; |
Fred Drake | d94f707 | 2000-09-14 15:48:06 +0000 | [diff] [blame] | 24 | #else |
| 25 | #error "No ndbm.h available!" |
| 26 | #endif |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 27 | |
| 28 | typedef struct { |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 29 | PyObject_HEAD |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 30 | int di_size; /* -1 means recompute */ |
| 31 | DBM *di_dbm; |
| 32 | } dbmobject; |
| 33 | |
Jeremy Hylton | 938ace6 | 2002-07-17 16:30:39 +0000 | [diff] [blame] | 34 | static PyTypeObject Dbmtype; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 35 | |
| 36 | #define is_dbmobject(v) ((v)->ob_type == &Dbmtype) |
Guido van Rossum | 77eecfa | 1997-07-17 22:56:01 +0000 | [diff] [blame] | 37 | #define check_dbmobject_open(v) if ((v)->di_dbm == NULL) \ |
| 38 | { PyErr_SetString(DbmError, "DBM object has already been closed"); \ |
| 39 | return NULL; } |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 40 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 41 | static PyObject *DbmError; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 42 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 43 | static PyObject * |
Peter Schneider-Kamp | cb27c35 | 2000-07-10 17:06:38 +0000 | [diff] [blame] | 44 | newdbmobject(char *file, int flags, int mode) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 45 | { |
| 46 | dbmobject *dp; |
| 47 | |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 48 | dp = PyObject_New(dbmobject, &Dbmtype); |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 49 | if (dp == NULL) |
| 50 | return NULL; |
| 51 | dp->di_size = -1; |
| 52 | if ( (dp->di_dbm = dbm_open(file, flags, mode)) == 0 ) { |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 53 | PyErr_SetFromErrno(DbmError); |
| 54 | Py_DECREF(dp); |
| 55 | return NULL; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 56 | } |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 57 | return (PyObject *)dp; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 58 | } |
| 59 | |
| 60 | /* Methods */ |
| 61 | |
| 62 | static void |
Peter Schneider-Kamp | cb27c35 | 2000-07-10 17:06:38 +0000 | [diff] [blame] | 63 | dbm_dealloc(register dbmobject *dp) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 64 | { |
| 65 | if ( dp->di_dbm ) |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 66 | dbm_close(dp->di_dbm); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 67 | PyObject_Del(dp); |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 68 | } |
| 69 | |
| 70 | static int |
Peter Schneider-Kamp | cb27c35 | 2000-07-10 17:06:38 +0000 | [diff] [blame] | 71 | dbm_length(dbmobject *dp) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 72 | { |
Guido van Rossum | 77eecfa | 1997-07-17 22:56:01 +0000 | [diff] [blame] | 73 | if (dp->di_dbm == NULL) { |
| 74 | PyErr_SetString(DbmError, "DBM object has already been closed"); |
| 75 | return -1; |
| 76 | } |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 77 | if ( dp->di_size < 0 ) { |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 78 | datum key; |
| 79 | int size; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 80 | |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 81 | size = 0; |
| 82 | for ( key=dbm_firstkey(dp->di_dbm); key.dptr; |
| 83 | key = dbm_nextkey(dp->di_dbm)) |
| 84 | size++; |
| 85 | dp->di_size = size; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 86 | } |
| 87 | return dp->di_size; |
| 88 | } |
| 89 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 90 | static PyObject * |
Peter Schneider-Kamp | cb27c35 | 2000-07-10 17:06:38 +0000 | [diff] [blame] | 91 | dbm_subscript(dbmobject *dp, register PyObject *key) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 92 | { |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 93 | datum drec, krec; |
| 94 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 95 | if (!PyArg_Parse(key, "s#", &krec.dptr, &krec.dsize) ) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 96 | return NULL; |
| 97 | |
Guido van Rossum | 77eecfa | 1997-07-17 22:56:01 +0000 | [diff] [blame] | 98 | check_dbmobject_open(dp); |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 99 | drec = dbm_fetch(dp->di_dbm, krec); |
| 100 | if ( drec.dptr == 0 ) { |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 101 | PyErr_SetString(PyExc_KeyError, |
| 102 | PyString_AS_STRING((PyStringObject *)key)); |
| 103 | return NULL; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 104 | } |
| 105 | if ( dbm_error(dp->di_dbm) ) { |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 106 | dbm_clearerr(dp->di_dbm); |
| 107 | PyErr_SetString(DbmError, ""); |
| 108 | return NULL; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 109 | } |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 110 | return PyString_FromStringAndSize(drec.dptr, drec.dsize); |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | static int |
Peter Schneider-Kamp | cb27c35 | 2000-07-10 17:06:38 +0000 | [diff] [blame] | 114 | dbm_ass_sub(dbmobject *dp, PyObject *v, PyObject *w) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 115 | { |
| 116 | datum krec, drec; |
| 117 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 118 | if ( !PyArg_Parse(v, "s#", &krec.dptr, &krec.dsize) ) { |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 119 | PyErr_SetString(PyExc_TypeError, |
| 120 | "dbm mappings have string indices only"); |
| 121 | return -1; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 122 | } |
Guido van Rossum | 77eecfa | 1997-07-17 22:56:01 +0000 | [diff] [blame] | 123 | if (dp->di_dbm == NULL) { |
| 124 | PyErr_SetString(DbmError, "DBM object has already been closed"); |
| 125 | return -1; |
| 126 | } |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 127 | dp->di_size = -1; |
| 128 | if (w == NULL) { |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 129 | if ( dbm_delete(dp->di_dbm, krec) < 0 ) { |
| 130 | dbm_clearerr(dp->di_dbm); |
| 131 | PyErr_SetString(PyExc_KeyError, |
Roger E. Masse | bd4b961 | 1996-12-13 15:59:22 +0000 | [diff] [blame] | 132 | PyString_AS_STRING((PyStringObject *)v)); |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 133 | return -1; |
| 134 | } |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 135 | } else { |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 136 | if ( !PyArg_Parse(w, "s#", &drec.dptr, &drec.dsize) ) { |
| 137 | PyErr_SetString(PyExc_TypeError, |
Roger E. Masse | bd4b961 | 1996-12-13 15:59:22 +0000 | [diff] [blame] | 138 | "dbm mappings have string elements only"); |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 139 | return -1; |
| 140 | } |
| 141 | if ( dbm_store(dp->di_dbm, krec, drec, DBM_REPLACE) < 0 ) { |
| 142 | dbm_clearerr(dp->di_dbm); |
Roger E. Masse | bd4b961 | 1996-12-13 15:59:22 +0000 | [diff] [blame] | 143 | PyErr_SetString(DbmError, |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 144 | "cannot add item to database"); |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 145 | return -1; |
| 146 | } |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 147 | } |
| 148 | if ( dbm_error(dp->di_dbm) ) { |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 149 | dbm_clearerr(dp->di_dbm); |
| 150 | PyErr_SetString(DbmError, ""); |
| 151 | return -1; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 152 | } |
| 153 | return 0; |
| 154 | } |
| 155 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 156 | static PyMappingMethods dbm_as_mapping = { |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 157 | (inquiry)dbm_length, /*mp_length*/ |
| 158 | (binaryfunc)dbm_subscript, /*mp_subscript*/ |
| 159 | (objobjargproc)dbm_ass_sub, /*mp_ass_subscript*/ |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 160 | }; |
| 161 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 162 | static PyObject * |
Peter Schneider-Kamp | cb27c35 | 2000-07-10 17:06:38 +0000 | [diff] [blame] | 163 | dbm__close(register dbmobject *dp, PyObject *args) |
Guido van Rossum | 807b7be | 1995-07-07 22:37:11 +0000 | [diff] [blame] | 164 | { |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 165 | if (!PyArg_ParseTuple(args, ":close")) |
Guido van Rossum | 807b7be | 1995-07-07 22:37:11 +0000 | [diff] [blame] | 166 | return NULL; |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 167 | if (dp->di_dbm) |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 168 | dbm_close(dp->di_dbm); |
Guido van Rossum | 807b7be | 1995-07-07 22:37:11 +0000 | [diff] [blame] | 169 | dp->di_dbm = NULL; |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 170 | Py_INCREF(Py_None); |
| 171 | return Py_None; |
Guido van Rossum | 807b7be | 1995-07-07 22:37:11 +0000 | [diff] [blame] | 172 | } |
| 173 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 174 | static PyObject * |
Peter Schneider-Kamp | cb27c35 | 2000-07-10 17:06:38 +0000 | [diff] [blame] | 175 | dbm_keys(register dbmobject *dp, PyObject *args) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 176 | { |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 177 | register PyObject *v, *item; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 178 | datum key; |
Guido van Rossum | d503913 | 1995-01-30 12:45:38 +0000 | [diff] [blame] | 179 | int err; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 180 | |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 181 | if (!PyArg_ParseTuple(args, ":keys")) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 182 | return NULL; |
Guido van Rossum | 77eecfa | 1997-07-17 22:56:01 +0000 | [diff] [blame] | 183 | check_dbmobject_open(dp); |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 184 | v = PyList_New(0); |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 185 | if (v == NULL) |
| 186 | return NULL; |
| 187 | for (key = dbm_firstkey(dp->di_dbm); key.dptr; |
Guido van Rossum | d503913 | 1995-01-30 12:45:38 +0000 | [diff] [blame] | 188 | key = dbm_nextkey(dp->di_dbm)) { |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 189 | item = PyString_FromStringAndSize(key.dptr, key.dsize); |
Guido van Rossum | d503913 | 1995-01-30 12:45:38 +0000 | [diff] [blame] | 190 | if (item == NULL) { |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 191 | Py_DECREF(v); |
Guido van Rossum | d503913 | 1995-01-30 12:45:38 +0000 | [diff] [blame] | 192 | return NULL; |
| 193 | } |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 194 | err = PyList_Append(v, item); |
| 195 | Py_DECREF(item); |
Guido van Rossum | d503913 | 1995-01-30 12:45:38 +0000 | [diff] [blame] | 196 | if (err != 0) { |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 197 | Py_DECREF(v); |
Guido van Rossum | d503913 | 1995-01-30 12:45:38 +0000 | [diff] [blame] | 198 | return NULL; |
| 199 | } |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 200 | } |
| 201 | return v; |
| 202 | } |
| 203 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 204 | static PyObject * |
Peter Schneider-Kamp | cb27c35 | 2000-07-10 17:06:38 +0000 | [diff] [blame] | 205 | dbm_has_key(register dbmobject *dp, PyObject *args) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 206 | { |
| 207 | datum key, val; |
| 208 | |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 209 | if (!PyArg_ParseTuple(args, "s#:has_key", &key.dptr, &key.dsize)) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 210 | return NULL; |
Guido van Rossum | 77eecfa | 1997-07-17 22:56:01 +0000 | [diff] [blame] | 211 | check_dbmobject_open(dp); |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 212 | val = dbm_fetch(dp->di_dbm, key); |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 213 | return PyInt_FromLong(val.dptr != NULL); |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 214 | } |
| 215 | |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 216 | static PyObject * |
| 217 | dbm_get(register dbmobject *dp, PyObject *args) |
| 218 | { |
| 219 | datum key, val; |
| 220 | PyObject *defvalue = Py_None; |
| 221 | |
| 222 | if (!PyArg_ParseTuple(args, "s#|O:get", |
| 223 | &key.dptr, &key.dsize, &defvalue)) |
| 224 | return NULL; |
| 225 | check_dbmobject_open(dp); |
| 226 | val = dbm_fetch(dp->di_dbm, key); |
| 227 | if (val.dptr != NULL) |
| 228 | return PyString_FromStringAndSize(val.dptr, val.dsize); |
| 229 | else { |
| 230 | Py_INCREF(defvalue); |
| 231 | return defvalue; |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | static PyObject * |
| 236 | dbm_setdefault(register dbmobject *dp, PyObject *args) |
| 237 | { |
| 238 | datum key, val; |
| 239 | PyObject *defvalue = NULL; |
| 240 | |
| 241 | if (!PyArg_ParseTuple(args, "s#|S:setdefault", |
| 242 | &key.dptr, &key.dsize, &defvalue)) |
| 243 | return NULL; |
| 244 | check_dbmobject_open(dp); |
| 245 | val = dbm_fetch(dp->di_dbm, key); |
| 246 | if (val.dptr != NULL) |
| 247 | return PyString_FromStringAndSize(val.dptr, val.dsize); |
| 248 | if (defvalue == NULL) { |
| 249 | defvalue = PyString_FromStringAndSize(NULL, 0); |
| 250 | if (defvalue == NULL) |
| 251 | return NULL; |
| 252 | } |
| 253 | else |
| 254 | Py_INCREF(defvalue); |
| 255 | val.dptr = PyString_AS_STRING(defvalue); |
| 256 | val.dsize = PyString_GET_SIZE(defvalue); |
| 257 | if (dbm_store(dp->di_dbm, key, val, DBM_INSERT) < 0) { |
| 258 | dbm_clearerr(dp->di_dbm); |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 259 | PyErr_SetString(DbmError, "cannot add item to database"); |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 260 | return NULL; |
| 261 | } |
| 262 | return defvalue; |
| 263 | } |
| 264 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 265 | static PyMethodDef dbm_methods[] = { |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 266 | {"close", (PyCFunction)dbm__close, METH_VARARGS, |
| 267 | "close()\nClose the database."}, |
| 268 | {"keys", (PyCFunction)dbm_keys, METH_VARARGS, |
| 269 | "keys() -> list\nReturn a list of all keys in the database."}, |
| 270 | {"has_key", (PyCFunction)dbm_has_key, METH_VARARGS, |
| 271 | "has_key(key} -> boolean\nReturn true iff key is in the database."}, |
| 272 | {"get", (PyCFunction)dbm_get, METH_VARARGS, |
| 273 | "get(key[, default]) -> value\n" |
| 274 | "Return the value for key if present, otherwise default."}, |
| 275 | {"setdefault", (PyCFunction)dbm_setdefault, METH_VARARGS, |
| 276 | "setdefault(key[, default]) -> value\n" |
| 277 | "Return the value for key if present, otherwise default. If key\n" |
| 278 | "is not in the database, it is inserted with default as the value."}, |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 279 | {NULL, NULL} /* sentinel */ |
| 280 | }; |
| 281 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 282 | static PyObject * |
Peter Schneider-Kamp | cb27c35 | 2000-07-10 17:06:38 +0000 | [diff] [blame] | 283 | dbm_getattr(dbmobject *dp, char *name) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 284 | { |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 285 | return Py_FindMethod(dbm_methods, (PyObject *)dp, name); |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 286 | } |
| 287 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 288 | static PyTypeObject Dbmtype = { |
Guido van Rossum | a120ffc | 2001-01-22 15:29:14 +0000 | [diff] [blame] | 289 | PyObject_HEAD_INIT(NULL) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 290 | 0, |
Guido van Rossum | 1464839 | 2001-12-08 18:02:58 +0000 | [diff] [blame] | 291 | "dbm.dbm", |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 292 | sizeof(dbmobject), |
| 293 | 0, |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 294 | (destructor)dbm_dealloc, /*tp_dealloc*/ |
| 295 | 0, /*tp_print*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 296 | (getattrfunc)dbm_getattr, /*tp_getattr*/ |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 297 | 0, /*tp_setattr*/ |
| 298 | 0, /*tp_compare*/ |
| 299 | 0, /*tp_repr*/ |
| 300 | 0, /*tp_as_number*/ |
| 301 | 0, /*tp_as_sequence*/ |
| 302 | &dbm_as_mapping, /*tp_as_mapping*/ |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 303 | }; |
| 304 | |
| 305 | /* ----------------------------------------------------------------- */ |
| 306 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 307 | static PyObject * |
Peter Schneider-Kamp | cb27c35 | 2000-07-10 17:06:38 +0000 | [diff] [blame] | 308 | dbmopen(PyObject *self, PyObject *args) |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 309 | { |
Guido van Rossum | 807b7be | 1995-07-07 22:37:11 +0000 | [diff] [blame] | 310 | char *name; |
| 311 | char *flags = "r"; |
| 312 | int iflags; |
| 313 | int mode = 0666; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 314 | |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 315 | if ( !PyArg_ParseTuple(args, "s|si:open", &name, &flags, &mode) ) |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 316 | return NULL; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 317 | if ( strcmp(flags, "r") == 0 ) |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 318 | iflags = O_RDONLY; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 319 | else if ( strcmp(flags, "w") == 0 ) |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 320 | iflags = O_RDWR; |
Guido van Rossum | 807b7be | 1995-07-07 22:37:11 +0000 | [diff] [blame] | 321 | else if ( strcmp(flags, "rw") == 0 ) /* B/W compat */ |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 322 | iflags = O_RDWR|O_CREAT; |
Guido van Rossum | 807b7be | 1995-07-07 22:37:11 +0000 | [diff] [blame] | 323 | else if ( strcmp(flags, "c") == 0 ) |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 324 | iflags = O_RDWR|O_CREAT; |
Guido van Rossum | 807b7be | 1995-07-07 22:37:11 +0000 | [diff] [blame] | 325 | else if ( strcmp(flags, "n") == 0 ) |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 326 | iflags = O_RDWR|O_CREAT|O_TRUNC; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 327 | else { |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 328 | PyErr_SetString(DbmError, |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 329 | "arg 2 to open should be 'r', 'w', 'c', or 'n'"); |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 330 | return NULL; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 331 | } |
| 332 | return newdbmobject(name, iflags, mode); |
| 333 | } |
| 334 | |
Roger E. Masse | b0dfe96 | 1996-12-10 00:07:00 +0000 | [diff] [blame] | 335 | static PyMethodDef dbmmodule_methods[] = { |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 336 | { "open", (PyCFunction)dbmopen, METH_VARARGS, |
| 337 | "open(path[, flag[, mode]]) -> mapping\n" |
| 338 | "Return a database object."}, |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 339 | { 0, 0 }, |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 340 | }; |
| 341 | |
Guido van Rossum | 3886bb6 | 1998-12-04 18:50:17 +0000 | [diff] [blame] | 342 | DL_EXPORT(void) |
Thomas Wouters | 58d0510 | 2000-07-24 14:43:35 +0000 | [diff] [blame] | 343 | initdbm(void) { |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 344 | PyObject *m, *d, *s; |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 345 | |
Guido van Rossum | a120ffc | 2001-01-22 15:29:14 +0000 | [diff] [blame] | 346 | Dbmtype.ob_type = &PyType_Type; |
Roger E. Masse | e7ee8c3 | 1996-12-13 15:55:22 +0000 | [diff] [blame] | 347 | m = Py_InitModule("dbm", dbmmodule_methods); |
| 348 | d = PyModule_GetDict(m); |
Fred Drake | 1ac526d | 2000-09-15 21:35:14 +0000 | [diff] [blame] | 349 | if (DbmError == NULL) |
| 350 | DbmError = PyErr_NewException("dbm.error", NULL, NULL); |
| 351 | s = PyString_FromString(which_dbm); |
| 352 | if (s != NULL) { |
| 353 | PyDict_SetItemString(d, "library", s); |
| 354 | Py_DECREF(s); |
| 355 | } |
Guido van Rossum | 0cb96de | 1997-10-01 04:29:29 +0000 | [diff] [blame] | 356 | if (DbmError != NULL) |
| 357 | PyDict_SetItemString(d, "error", DbmError); |
Guido van Rossum | dd9ed83 | 1992-06-29 17:10:40 +0000 | [diff] [blame] | 358 | } |