Mercurial > cpython-lru_cache-weakref

annotate Modules/_dbmmodule.c @ 48715:48dddfd2fbf3

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RPC_WSTR is not available Visual Studio 2003 or earlier. (Maybe I should have defined RPC_WSTR on old compiler, but uuidcreate() is only place using it, so I simply replaced with unsigned short *)
author Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp>
date Sun, 17 Aug 2008 07:26:26 +0000
parents aa1fbe321acf
children 8ffec372040e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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63798cde582c Added qgetfd() to cstubs for GL.
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1
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2 /* DBM module using dictionary interface */
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3
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4
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5 #include "Python.h"
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6
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7 #include <sys/types.h>
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8 #include <sys/stat.h>
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9 #include <fcntl.h>
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11 /* Some Linux systems install gdbm/ndbm.h, but not ndbm.h. This supports
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12 * whichever configure was able to locate.
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13 */
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14 #if defined(HAVE_NDBM_H)
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15 #include <ndbm.h>
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16 #if defined(PYOS_OS2) && !defined(PYCC_GCC)
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17 static char *which_dbm = "ndbm";
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18 #else
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19 static char *which_dbm = "GNU gdbm"; /* EMX port of GDBM */
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20 #endif
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21 #elif defined(HAVE_GDBM_NDBM_H)
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22 #include <gdbm/ndbm.h>
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23 static char *which_dbm = "GNU gdbm";
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24 #elif defined(HAVE_BERKDB_H)
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25 #include <db.h>
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26 static char *which_dbm = "Berkeley DB";
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27 #else
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28 #error "No ndbm.h available!"
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29 #endif
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30
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31 typedef struct {
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32 PyObject_HEAD
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33 int di_size; /* -1 means recompute */
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34 DBM *di_dbm;
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35 } dbmobject;
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36
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37 static PyTypeObject Dbmtype;
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38
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39 #define is_dbmobject(v) (Py_TYPE(v) == &Dbmtype)
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40 #define check_dbmobject_open(v) if ((v)->di_dbm == NULL) \
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41 { PyErr_SetString(DbmError, "DBM object has already been closed"); \
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42 return NULL; }
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43
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44 static PyObject *DbmError;
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46 static PyObject *
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47 newdbmobject(char *file, int flags, int mode)
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48 {
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49 dbmobject *dp;
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50
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51 dp = PyObject_New(dbmobject, &Dbmtype);
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52 if (dp == NULL)
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53 return NULL;
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54 dp->di_size = -1;
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55 if ( (dp->di_dbm = dbm_open(file, flags, mode)) == 0 ) {
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56 PyErr_SetFromErrno(DbmError);
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57 Py_DECREF(dp);
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58 return NULL;
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59 }
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60 return (PyObject *)dp;
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61 }
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62
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63 /* Methods */
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64
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65 static void
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66 dbm_dealloc(register dbmobject *dp)
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67 {
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68 if ( dp->di_dbm )
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69 dbm_close(dp->di_dbm);
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70 PyObject_Del(dp);
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71 }
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72
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73 static Py_ssize_t
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74 dbm_length(dbmobject *dp)
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75 {
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76 if (dp->di_dbm == NULL) {
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77 PyErr_SetString(DbmError, "DBM object has already been closed");
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78 return -1;
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79 }
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80 if ( dp->di_size < 0 ) {
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81 datum key;
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82 int size;
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83
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84 size = 0;
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85 for ( key=dbm_firstkey(dp->di_dbm); key.dptr;
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86 key = dbm_nextkey(dp->di_dbm))
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87 size++;
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88 dp->di_size = size;
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89 }
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90 return dp->di_size;
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91 }
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92
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93 static PyObject *
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94 dbm_subscript(dbmobject *dp, register PyObject *key)
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95 {
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96 datum drec, krec;
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97 Py_ssize_t tmp_size;
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98
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99 if (!PyArg_Parse(key, "s#", &krec.dptr, &tmp_size) )
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100 return NULL;
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101
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102 krec.dsize = tmp_size;
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103 check_dbmobject_open(dp);
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104 drec = dbm_fetch(dp->di_dbm, krec);
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105 if ( drec.dptr == 0 ) {
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106 PyErr_SetObject(PyExc_KeyError, key);
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107 return NULL;
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108 }
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109 if ( dbm_error(dp->di_dbm) ) {
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110 dbm_clearerr(dp->di_dbm);
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111 PyErr_SetString(DbmError, "");
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112 return NULL;
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113 }
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114 return PyByteArray_FromStringAndSize(drec.dptr, drec.dsize);
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115 }
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116
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117 static int
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118 dbm_ass_sub(dbmobject *dp, PyObject *v, PyObject *w)
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119 {
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120 datum krec, drec;
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121 Py_ssize_t tmp_size;
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122
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123 if ( !PyArg_Parse(v, "s#", &krec.dptr, &tmp_size) ) {
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124 PyErr_SetString(PyExc_TypeError,
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125 "dbm mappings have string keys only");
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126 return -1;
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127 }
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Neal Norwitz <nnorwitz@gmail.com>
parents: 24490
diff changeset
128 krec.dsize = tmp_size;
5828
9fa2bd8a2b78 Patches by AMK to check that the db is still open.
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parents: 4718
diff changeset
129 if (dp->di_dbm == NULL) {
9fa2bd8a2b78 Patches by AMK to check that the db is still open.
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parents: 4718
diff changeset
130 PyErr_SetString(DbmError, "DBM object has already been closed");
9fa2bd8a2b78 Patches by AMK to check that the db is still open.
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parents: 4718
diff changeset
131 return -1;
9fa2bd8a2b78 Patches by AMK to check that the db is still open.
Guido van Rossum <guido@python.org>
parents: 4718
diff changeset
132 }
906
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Guido van Rossum <guido@python.org>
parents:
diff changeset
133 dp->di_size = -1;
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parents:
diff changeset
134 if (w == NULL) {
4717
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
135 if ( dbm_delete(dp->di_dbm, krec) < 0 ) {
12154d091316 Reindented via GvR recomendation ala Bwarsaw cppy-style.el
Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
136 dbm_clearerr(dp->di_dbm);
42487
c8a091b842d6 Fix a type error in a previous patch I made to this module.
Guido van Rossum <guido@python.org>
parents: 42467
diff changeset
137 PyErr_SetObject(PyExc_KeyError, v);
4717
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
138 return -1;
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
139 }
906
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parents:
diff changeset
140 } else {
26360
8236d5288412 Fix SF # 640557, '64-bit' systems and the dbm module
Neal Norwitz <nnorwitz@gmail.com>
parents: 24490
diff changeset
141 if ( !PyArg_Parse(w, "s#", &drec.dptr, &tmp_size) ) {
4717
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
142 PyErr_SetString(PyExc_TypeError,
41895
3fda9e6a0b6d Modernize. Values are now bytes.
Guido van Rossum <guido@python.org>
parents: 40450
diff changeset
143 "dbm mappings have byte string elements only");
4717
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
144 return -1;
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
145 }
26360
8236d5288412 Fix SF # 640557, '64-bit' systems and the dbm module
Neal Norwitz <nnorwitz@gmail.com>
parents: 24490
diff changeset
146 drec.dsize = tmp_size;
4717
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
147 if ( dbm_store(dp->di_dbm, krec, drec, DBM_REPLACE) < 0 ) {
12154d091316 Reindented via GvR recomendation ala Bwarsaw cppy-style.el
Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
148 dbm_clearerr(dp->di_dbm);
4718
1834654bebe3 Opps, fixed a couple of newly introduced wrapping problems.
Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4717
diff changeset
149 PyErr_SetString(DbmError,
15318
8aa947e1eee8 Ka-Ping Yee <ping@lfw.org>:
Fred Drake <fdrake@acm.org>
parents: 14608
diff changeset
150 "cannot add item to database");
4717
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
151 return -1;
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
152 }
906
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Guido van Rossum <guido@python.org>
parents:
diff changeset
153 }
63798cde582c Added qgetfd() to cstubs for GL.
Guido van Rossum <guido@python.org>
parents:
diff changeset
154 if ( dbm_error(dp->di_dbm) ) {
4717
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
155 dbm_clearerr(dp->di_dbm);
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
156 PyErr_SetString(DbmError, "");
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
157 return -1;
906
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Guido van Rossum <guido@python.org>
parents:
diff changeset
158 }
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Guido van Rossum <guido@python.org>
parents:
diff changeset
159 return 0;
63798cde582c Added qgetfd() to cstubs for GL.
Guido van Rossum <guido@python.org>
parents:
diff changeset
160 }
63798cde582c Added qgetfd() to cstubs for GL.
Guido van Rossum <guido@python.org>
parents:
diff changeset
161
4648
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4600
diff changeset
162 static PyMappingMethods dbm_as_mapping = {
36501
7fdc639bc5b4 Merge ssize_t branch.
Martin v. Löwis <martin@v.loewis.de>
parents: 36324
diff changeset
163 (lenfunc)dbm_length, /*mp_length*/
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1257
diff changeset
164 (binaryfunc)dbm_subscript, /*mp_subscript*/
1940892d2fe3 Merge alpha100 branch back to main trunk
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parents: 1257
diff changeset
165 (objobjargproc)dbm_ass_sub, /*mp_ass_subscript*/
906
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Guido van Rossum <guido@python.org>
parents:
diff changeset
166 };
63798cde582c Added qgetfd() to cstubs for GL.
Guido van Rossum <guido@python.org>
parents:
diff changeset
167
4648
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parents: 4600
diff changeset
168 static PyObject *
38669
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Thomas Wouters <thomas@python.org>
parents: 36501
diff changeset
169 dbm__close(register dbmobject *dp, PyObject *unused)
2805
b7a06db85caf normalized flag arg and made flag, mode default args; minor cosmetics
Guido van Rossum <guido@python.org>
parents: 2268
diff changeset
170 {
14608
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Fred Drake <fdrake@acm.org>
parents: 14577
diff changeset
171 if (dp->di_dbm)
4717
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
172 dbm_close(dp->di_dbm);
2805
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parents: 2268
diff changeset
173 dp->di_dbm = NULL;
4648
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parents: 4600
diff changeset
174 Py_INCREF(Py_None);
6dd851445c7d renamed in a grand fashion.
Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4600
diff changeset
175 return Py_None;
2805
b7a06db85caf normalized flag arg and made flag, mode default args; minor cosmetics
Guido van Rossum <guido@python.org>
parents: 2268
diff changeset
176 }
b7a06db85caf normalized flag arg and made flag, mode default args; minor cosmetics
Guido van Rossum <guido@python.org>
parents: 2268
diff changeset
177
4648
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parents: 4600
diff changeset
178 static PyObject *
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Thomas Wouters <thomas@python.org>
parents: 36501
diff changeset
179 dbm_keys(register dbmobject *dp, PyObject *unused)
906
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parents:
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180 {
4648
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parents: 4600
diff changeset
181 register PyObject *v, *item;
906
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parents:
diff changeset
182 datum key;
2268
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Guido van Rossum <guido@python.org>
parents: 2061
diff changeset
183 int err;
906
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parents:
diff changeset
184
5828
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parents: 4718
diff changeset
185 check_dbmobject_open(dp);
4648
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parents: 4600
diff changeset
186 v = PyList_New(0);
906
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parents:
diff changeset
187 if (v == NULL)
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Guido van Rossum <guido@python.org>
parents:
diff changeset
188 return NULL;
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Guido van Rossum <guido@python.org>
parents:
diff changeset
189 for (key = dbm_firstkey(dp->di_dbm); key.dptr;
2268
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Guido van Rossum <guido@python.org>
parents: 2061
diff changeset
190 key = dbm_nextkey(dp->di_dbm)) {
47300
96b34263e448 Renamed PyBytes to PyByteArray
Christian Heimes <christian@cheimes.de>
parents: 47285
diff changeset
191 item = PyByteArray_FromStringAndSize(key.dptr, key.dsize);
2268
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parents: 2061
diff changeset
192 if (item == NULL) {
4648
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4600
diff changeset
193 Py_DECREF(v);
2268
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Guido van Rossum <guido@python.org>
parents: 2061
diff changeset
194 return NULL;
ac6f69b1e993 plug leak and improve error handling in dbm_keys()
Guido van Rossum <guido@python.org>
parents: 2061
diff changeset
195 }
4648
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4600
diff changeset
196 err = PyList_Append(v, item);
6dd851445c7d renamed in a grand fashion.
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parents: 4600
diff changeset
197 Py_DECREF(item);
2268
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Guido van Rossum <guido@python.org>
parents: 2061
diff changeset
198 if (err != 0) {
4648
6dd851445c7d renamed in a grand fashion.
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parents: 4600
diff changeset
199 Py_DECREF(v);
2268
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Guido van Rossum <guido@python.org>
parents: 2061
diff changeset
200 return NULL;
ac6f69b1e993 plug leak and improve error handling in dbm_keys()
Guido van Rossum <guido@python.org>
parents: 2061
diff changeset
201 }
906
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Guido van Rossum <guido@python.org>
parents:
diff changeset
202 }
63798cde582c Added qgetfd() to cstubs for GL.
Guido van Rossum <guido@python.org>
parents:
diff changeset
203 return v;
63798cde582c Added qgetfd() to cstubs for GL.
Guido van Rossum <guido@python.org>
parents:
diff changeset
204 }
63798cde582c Added qgetfd() to cstubs for GL.
Guido van Rossum <guido@python.org>
parents:
diff changeset
205
39593
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
206 static int
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parents: 39575
diff changeset
207 dbm_contains(PyObject *self, PyObject *arg)
906
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parents:
diff changeset
208 {
39593
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parents: 39575
diff changeset
209 dbmobject *dp = (dbmobject *)self;
906
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parents:
diff changeset
210 datum key, val;
39593
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parents: 39575
diff changeset
211
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
212 if ((dp)->di_dbm == NULL) {
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Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
213 PyErr_SetString(DbmError,
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
214 "DBM object has already been closed");
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
215 return -1;
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
216 }
41895
3fda9e6a0b6d Modernize. Values are now bytes.
Guido van Rossum <guido@python.org>
parents: 40450
diff changeset
217 if (PyUnicode_Check(arg)) {
3fda9e6a0b6d Modernize. Values are now bytes.
Guido van Rossum <guido@python.org>
parents: 40450
diff changeset
218 arg = _PyUnicode_AsDefaultEncodedString(arg, NULL);
3fda9e6a0b6d Modernize. Values are now bytes.
Guido van Rossum <guido@python.org>
parents: 40450
diff changeset
219 if (arg == NULL)
3fda9e6a0b6d Modernize. Values are now bytes.
Guido van Rossum <guido@python.org>
parents: 40450
diff changeset
220 return -1;
3fda9e6a0b6d Modernize. Values are now bytes.
Guido van Rossum <guido@python.org>
parents: 40450
diff changeset
221 }
47301
23ab586c427a Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents: 47300
diff changeset
222 if (!PyBytes_Check(arg)) {
39593
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
223 PyErr_Format(PyExc_TypeError,
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Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
224 "dbm key must be string, not %.100s",
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
225 arg->ob_type->tp_name);
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
226 return -1;
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
227 }
47301
23ab586c427a Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents: 47300
diff changeset
228 key.dptr = PyBytes_AS_STRING(arg);
23ab586c427a Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents: 47300
diff changeset
229 key.dsize = PyBytes_GET_SIZE(arg);
906
63798cde582c Added qgetfd() to cstubs for GL.
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parents:
diff changeset
230 val = dbm_fetch(dp->di_dbm, key);
39593
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
231 return val.dptr != NULL;
906
63798cde582c Added qgetfd() to cstubs for GL.
Guido van Rossum <guido@python.org>
parents:
diff changeset
232 }
63798cde582c Added qgetfd() to cstubs for GL.
Guido van Rossum <guido@python.org>
parents:
diff changeset
233
39593
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parents: 39575
diff changeset
234 static PySequenceMethods dbm_as_sequence = {
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
235 0, /* sq_length */
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
236 0, /* sq_concat */
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
237 0, /* sq_repeat */
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
238 0, /* sq_item */
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
239 0, /* sq_slice */
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
240 0, /* sq_ass_item */
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
241 0, /* sq_ass_slice */
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
242 dbm_contains, /* sq_contains */
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
243 0, /* sq_inplace_concat */
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
244 0, /* sq_inplace_repeat */
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
245 };
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
246
14608
142a90eea8f4 Add a constant "library" to the module which names the library used,
Fred Drake <fdrake@acm.org>
parents: 14577
diff changeset
247 static PyObject *
142a90eea8f4 Add a constant "library" to the module which names the library used,
Fred Drake <fdrake@acm.org>
parents: 14577
diff changeset
248 dbm_get(register dbmobject *dp, PyObject *args)
142a90eea8f4 Add a constant "library" to the module which names the library used,
Fred Drake <fdrake@acm.org>
parents: 14577
diff changeset
249 {
142a90eea8f4 Add a constant "library" to the module which names the library used,
Fred Drake <fdrake@acm.org>
parents: 14577
diff changeset
250 datum key, val;
142a90eea8f4 Add a constant "library" to the module which names the library used,
Fred Drake <fdrake@acm.org>
parents: 14577
diff changeset
251 PyObject *defvalue = Py_None;
40450
cc992d75d5b3 Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents: 39593
diff changeset
252 char *tmp_ptr;
41895
3fda9e6a0b6d Modernize. Values are now bytes.
Guido van Rossum <guido@python.org>
parents: 40450
diff changeset
253 Py_ssize_t tmp_size;
14608
142a90eea8f4 Add a constant "library" to the module which names the library used,
Fred Drake <fdrake@acm.org>
parents: 14577
diff changeset
254
142a90eea8f4 Add a constant "library" to the module which names the library used,
Fred Drake <fdrake@acm.org>
parents: 14577
diff changeset
255 if (!PyArg_ParseTuple(args, "s#|O:get",
40450
cc992d75d5b3 Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents: 39593
diff changeset
256 &tmp_ptr, &tmp_size, &defvalue))
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257 return NULL;
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258 key.dptr = tmp_ptr;
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259 key.dsize = tmp_size;
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260 check_dbmobject_open(dp);
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261 val = dbm_fetch(dp->di_dbm, key);
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262 if (val.dptr != NULL)
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263 return PyByteArray_FromStringAndSize(val.dptr, val.dsize);
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264 else {
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265 Py_INCREF(defvalue);
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266 return defvalue;
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267 }
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268 }
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269
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270 static PyObject *
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271 dbm_setdefault(register dbmobject *dp, PyObject *args)
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272 {
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273 datum key, val;
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274 PyObject *defvalue = NULL;
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275 char *tmp_ptr;
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276 Py_ssize_t tmp_size;
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277
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278 if (!PyArg_ParseTuple(args, "s#|O:setdefault",
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279 &tmp_ptr, &tmp_size, &defvalue))
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280 return NULL;
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281 key.dptr = tmp_ptr;
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282 key.dsize = tmp_size;
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283 check_dbmobject_open(dp);
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284 val = dbm_fetch(dp->di_dbm, key);
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285 if (val.dptr != NULL)
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286 return PyByteArray_FromStringAndSize(val.dptr, val.dsize);
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287 if (defvalue == NULL) {
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288 defvalue = PyByteArray_FromStringAndSize(NULL, 0);
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289 if (defvalue == NULL)
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290 return NULL;
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291 val.dptr = NULL;
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292 val.dsize = 0;
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293 }
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294 else {
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295 if ( !PyArg_Parse(defvalue, "s#", &val.dptr, &tmp_size) ) {
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296 PyErr_SetString(PyExc_TypeError,
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297 "dbm mappings have byte string elements only");
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298 return NULL;
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299 }
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300 val.dsize = tmp_size;
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301 Py_INCREF(defvalue);
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302 }
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303 if (dbm_store(dp->di_dbm, key, val, DBM_INSERT) < 0) {
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304 dbm_clearerr(dp->di_dbm);
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305 PyErr_SetString(DbmError, "cannot add item to database");
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306 Py_DECREF(defvalue);
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307 return NULL;
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308 }
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309 return defvalue;
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310 }
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311
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312 static PyMethodDef dbm_methods[] = {
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313 {"close", (PyCFunction)dbm__close, METH_NOARGS,
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314 "close()\nClose the database."},
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315 {"keys", (PyCFunction)dbm_keys, METH_NOARGS,
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316 "keys() -> list\nReturn a list of all keys in the database."},
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317 {"get", (PyCFunction)dbm_get, METH_VARARGS,
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318 "get(key[, default]) -> value\n"
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319 "Return the value for key if present, otherwise default."},
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320 {"setdefault", (PyCFunction)dbm_setdefault, METH_VARARGS,
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321 "setdefault(key[, default]) -> value\n"
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322 "Return the value for key if present, otherwise default. If key\n"
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323 "is not in the database, it is inserted with default as the value."},
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324 {NULL, NULL} /* sentinel */
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325 };
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326
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327 static PyTypeObject Dbmtype = {
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328 PyVarObject_HEAD_INIT(NULL, 0)
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329 "_dbm.dbm",
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330 sizeof(dbmobject),
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331 0,
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332 (destructor)dbm_dealloc, /*tp_dealloc*/
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333 0, /*tp_print*/
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334 0, /*tp_getattr*/
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335 0, /*tp_setattr*/
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336 0, /*tp_compare*/
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337 0, /*tp_repr*/
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338 0, /*tp_as_number*/
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339 &dbm_as_sequence, /*tp_as_sequence*/
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340 &dbm_as_mapping, /*tp_as_mapping*/
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341 0, /*tp_hash*/
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342 0, /*tp_call*/
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343 0, /*tp_str*/
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344 0, /*tp_getattro*/
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345 0, /*tp_setattro*/
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346 0, /*tp_as_buffer*/
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347 Py_TPFLAGS_DEFAULT, /*tp_flags*/
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348 0, /*tp_doc*/
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349 0, /*tp_traverse*/
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350 0, /*tp_clear*/
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351 0, /*tp_richcompare*/
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352 0, /*tp_weaklistoffset*/
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353 0, /*tp_iter*/
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354 0, /*tp_iternext*/
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355 dbm_methods, /*tp_methods*/
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356 };
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357
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358 /* ----------------------------------------------------------------- */
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359
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360 static PyObject *
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361 dbmopen(PyObject *self, PyObject *args)
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362 {
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363 char *name;
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364 char *flags = "r";
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365 int iflags;
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366 int mode = 0666;
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367
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368 if ( !PyArg_ParseTuple(args, "s|si:open", &name, &flags, &mode) )
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369 return NULL;
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370 if ( strcmp(flags, "r") == 0 )
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371 iflags = O_RDONLY;
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372 else if ( strcmp(flags, "w") == 0 )
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373 iflags = O_RDWR;
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374 else if ( strcmp(flags, "rw") == 0 ) /* B/W compat */
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375 iflags = O_RDWR|O_CREAT;
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376 else if ( strcmp(flags, "c") == 0 )
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377 iflags = O_RDWR|O_CREAT;
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378 else if ( strcmp(flags, "n") == 0 )
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379 iflags = O_RDWR|O_CREAT|O_TRUNC;
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380 else {
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381 PyErr_SetString(DbmError,
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382 "arg 2 to open should be 'r', 'w', 'c', or 'n'");
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383 return NULL;
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384 }
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385 return newdbmobject(name, iflags, mode);
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386 }
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Guido van Rossum <guido@python.org>
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387
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
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388 static PyMethodDef dbmmodule_methods[] = {
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389 { "open", (PyCFunction)dbmopen, METH_VARARGS,
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390 "open(path[, flag[, mode]]) -> mapping\n"
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391 "Return a database object."},
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Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
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392 { 0, 0 },
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393 };
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Guido van Rossum <guido@python.org>
parents:
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394
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Martin v. Löwis <martin@v.loewis.de>
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395
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Martin v. Löwis <martin@v.loewis.de>
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396 static struct PyModuleDef _dbmmodule = {
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397 PyModuleDef_HEAD_INIT,
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Martin v. Löwis <martin@v.loewis.de>
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398 "_dbm",
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Martin v. Löwis <martin@v.loewis.de>
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399 NULL,
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
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400 -1,
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
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401 dbmmodule_methods,
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
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402 NULL,
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
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diff changeset
403 NULL,
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
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diff changeset
404 NULL,
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
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diff changeset
405 NULL
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
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diff changeset
406 };
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47357
diff changeset
407
24471
f66b3a3509c7 Excise DL_EXPORT/DL_IMPORT from Modules/*. Required adding a prototype
Mark Hammond <mhammond@skippinet.com.au>
parents: 24280
diff changeset
408 PyMODINIT_FUNC
47580
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Martin v. Löwis <martin@v.loewis.de>
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diff changeset
409 PyInit__dbm(void) {
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Fred Drake <fdrake@acm.org>
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diff changeset
410 PyObject *m, *d, *s;
906
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Guido van Rossum <guido@python.org>
parents:
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411
39593
599abc31f770 Fix this right for has_key(). This required adding tp_as_sequence.
Guido van Rossum <guido@python.org>
parents: 39575
diff changeset
412 if (PyType_Ready(&Dbmtype) < 0)
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Martin v. Löwis <martin@v.loewis.de>
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413 return NULL;
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
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414 m = PyModule_Create(&_dbmmodule);
36324
1af7f719ed28 Check return result from Py_InitModule*(). This API can fail.
Neal Norwitz <nnorwitz@gmail.com>
parents: 26360
diff changeset
415 if (m == NULL)
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Martin v. Löwis <martin@v.loewis.de>
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diff changeset
416 return NULL;
4717
12154d091316 Reindented via GvR recomendation ala Bwarsaw cppy-style.el
Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
parents: 4648
diff changeset
417 d = PyModule_GetDict(m);
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Fred Drake <fdrake@acm.org>
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diff changeset
418 if (DbmError == NULL)
47357
b97dd5889246 Make db modules' error classes inherit IOError.
Georg Brandl <georg@python.org>
parents: 47301
diff changeset
419 DbmError = PyErr_NewException("_dbm.error",
b97dd5889246 Make db modules' error classes inherit IOError.
Georg Brandl <georg@python.org>
parents: 47301
diff changeset
420 PyExc_IOError, NULL);
42588
b7bd4a2689c1 The dbm module should use bytes for keys. This makes test_shelve pass.
Guido van Rossum <guido@python.org>
parents: 42487
diff changeset
421 s = PyUnicode_FromString(which_dbm);
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Fred Drake <fdrake@acm.org>
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diff changeset
422 if (s != NULL) {
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Fred Drake <fdrake@acm.org>
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diff changeset
423 PyDict_SetItemString(d, "library", s);
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diff changeset
424 Py_DECREF(s);
142a90eea8f4 Add a constant "library" to the module which names the library used,
Fred Drake <fdrake@acm.org>
parents: 14577
diff changeset
425 }
6367
2c29b8982643 Apply two changes, systematically:
Guido van Rossum <guido@python.org>
parents: 5828
diff changeset
426 if (DbmError != NULL)
2c29b8982643 Apply two changes, systematically:
Guido van Rossum <guido@python.org>
parents: 5828
diff changeset
427 PyDict_SetItemString(d, "error", DbmError);
47580
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
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diff changeset
428 if (PyErr_Occurred()) {
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47357
diff changeset
429 Py_DECREF(m);
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
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diff changeset
430 m = NULL;
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47357
diff changeset
431 }
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
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432 return m;
906
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Guido van Rossum <guido@python.org>
parents:
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433 }