Mercurial > cpython-lru_cache-weakref

annotate Modules/grpmodule.c @ 78069:a8aa77458e12 3.2

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Add c_size_t and c_ssize_t to the ctypes summary table.
author Antoine Pitrou <solipsis@pitrou.net>
date Thu, 12 Jul 2012 20:31:50 +0200
parents 3c9232a684ae
children b322655a4a88
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 /* UNIX group file access module */
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3
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4 #include "Python.h"
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5
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6 #include <sys/types.h>
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7 #include <grp.h>
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8
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9 static PyStructSequence_Field struct_group_type_fields[] = {
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10 {"gr_name", "group name"},
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11 {"gr_passwd", "password"},
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12 {"gr_gid", "group id"},
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13 {"gr_mem", "group memebers"},
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14 {0}
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15 };
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16
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17 PyDoc_STRVAR(struct_group__doc__,
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18 "grp.struct_group: Results from getgr*() routines.\n\n\
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19 This object may be accessed either as a tuple of\n\
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20 (gr_name,gr_passwd,gr_gid,gr_mem)\n\
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21 or via the object attributes as named in the above tuple.\n");
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22
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23 static PyStructSequence_Desc struct_group_type_desc = {
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24 "grp.struct_group",
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25 struct_group__doc__,
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26 struct_group_type_fields,
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27 4,
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28 };
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29
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30
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31 static int initialized;
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32 static PyTypeObject StructGrpType;
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33
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34 static PyObject *
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35 mkgrent(struct group *p)
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36 {
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37 int setIndex = 0;
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38 PyObject *v = PyStructSequence_New(&StructGrpType), *w;
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39 char **member;
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40
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41 if (v == NULL)
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42 return NULL;
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43
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44 if ((w = PyList_New(0)) == NULL) {
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45 Py_DECREF(v);
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46 return NULL;
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47 }
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48 for (member = p->gr_mem; *member != NULL; member++) {
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49 PyObject *x = PyUnicode_DecodeFSDefault(*member);
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50 if (x == NULL || PyList_Append(w, x) != 0) {
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51 Py_XDECREF(x);
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52 Py_DECREF(w);
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53 Py_DECREF(v);
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54 return NULL;
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55 }
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56 Py_DECREF(x);
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57 }
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58
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59 #define SET(i,val) PyStructSequence_SET_ITEM(v, i, val)
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60 SET(setIndex++, PyUnicode_DecodeFSDefault(p->gr_name));
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61 #ifdef __VMS
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62 SET(setIndex++, Py_None);
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63 Py_INCREF(Py_None);
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64 #else
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65 if (p->gr_passwd)
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66 SET(setIndex++, PyUnicode_DecodeFSDefault(p->gr_passwd));
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67 else {
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68 SET(setIndex++, Py_None);
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69 Py_INCREF(Py_None);
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70 }
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71 #endif
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72 SET(setIndex++, PyLong_FromLong((long) p->gr_gid));
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73 SET(setIndex++, w);
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74 #undef SET
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75
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76 if (PyErr_Occurred()) {
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77 Py_DECREF(v);
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78 return NULL;
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79 }
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80
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81 return v;
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82 }
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83
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84 static PyObject *
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85 grp_getgrgid(PyObject *self, PyObject *pyo_id)
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86 {
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87 PyObject *py_int_id;
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88 unsigned int gid;
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89 struct group *p;
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90
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91 py_int_id = PyNumber_Long(pyo_id);
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92 if (!py_int_id)
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93 return NULL;
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94 gid = PyLong_AS_LONG(py_int_id);
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95 Py_DECREF(py_int_id);
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96
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97 if ((p = getgrgid(gid)) == NULL) {
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98 PyErr_Format(PyExc_KeyError, "getgrgid(): gid not found: %d", gid);
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99 return NULL;
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100 }
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101 return mkgrent(p);
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102 }
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103
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104 static PyObject *
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105 grp_getgrnam(PyObject *self, PyObject *args)
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106 {
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107 char *name;
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108 struct group *p;
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109 PyObject *arg, *bytes, *retval = NULL;
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110
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111 if (!PyArg_ParseTuple(args, "U:getgrnam", &arg))
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112 return NULL;
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113 if ((bytes = PyUnicode_EncodeFSDefault(arg)) == NULL)
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114 return NULL;
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115 if (PyBytes_AsStringAndSize(bytes, &name, NULL) == -1)
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116 goto out;
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117
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118 if ((p = getgrnam(name)) == NULL) {
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119 PyErr_Format(PyExc_KeyError, "getgrnam(): name not found: %s", name);
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120 goto out;
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121 }
54422
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122 retval = mkgrent(p);
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123 out:
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124 Py_DECREF(bytes);
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125 return retval;
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126 }
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127
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128 static PyObject *
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129 grp_getgrall(PyObject *self, PyObject *ignore)
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130 {
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131 PyObject *d;
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132 struct group *p;
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133
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134 if ((d = PyList_New(0)) == NULL)
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135 return NULL;
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136 setgrent();
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137 while ((p = getgrent()) != NULL) {
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138 PyObject *v = mkgrent(p);
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139 if (v == NULL || PyList_Append(d, v) != 0) {
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140 Py_XDECREF(v);
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141 Py_DECREF(d);
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142 endgrent();
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143 return NULL;
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144 }
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145 Py_DECREF(v);
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146 }
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147 endgrent();
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148 return d;
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149 }
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150
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151 static PyMethodDef grp_methods[] = {
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152 {"getgrgid", grp_getgrgid, METH_O,
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153 "getgrgid(id) -> tuple\n\
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154 Return the group database entry for the given numeric group ID. If\n\
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155 id is not valid, raise KeyError."},
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156 {"getgrnam", grp_getgrnam, METH_VARARGS,
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157 "getgrnam(name) -> tuple\n\
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158 Return the group database entry for the given group name. If\n\
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parents: 13256
diff changeset
159 name is not valid, raise KeyError."},
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160 {"getgrall", grp_getgrall, METH_NOARGS,
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161 "getgrall() -> list of tuples\n\
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diff changeset
162 Return a list of all available group entries, in arbitrary order.\n\
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diff changeset
163 An entry whose name starts with '+' or '-' represents an instruction\n\
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164 to use YP/NIS and may not be accessible via getgrnam or getgrgid."},
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165 {NULL, NULL} /* sentinel */
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166 };
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parents:
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167
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ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 22099
diff changeset
168 PyDoc_STRVAR(grp__doc__,
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169 "Access to the Unix group database.\n\
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170 \n\
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171 Group entries are reported as 4-tuples containing the following fields\n\
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Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
172 from the group database, in order:\n\
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173 \n\
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174 name - name of the group\n\
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175 passwd - group password (encrypted); often empty\n\
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176 gid - numeric ID of the group\n\
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diff changeset
177 mem - list of members\n\
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diff changeset
178 \n\
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parents: 13256
diff changeset
179 The gid is an integer, name and password are strings. (Note that most\n\
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Fred Drake <fdrake@acm.org>
parents: 13256
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180 users are not explicitly listed as members of the groups they are in\n\
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parents: 13256
diff changeset
181 according to the password database. Check both databases to get\n\
23832
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Martin v. Löwis <martin@v.loewis.de>
parents: 22099
diff changeset
182 complete membership information.)");
13433
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diff changeset
183
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diff changeset
184
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94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
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parents: 44099
diff changeset
185
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diff changeset
186 static struct PyModuleDef grpmodule = {
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187 PyModuleDef_HEAD_INIT,
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188 "grp",
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diff changeset
189 grp__doc__,
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diff changeset
190 -1,
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191 grp_methods,
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192 NULL,
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diff changeset
193 NULL,
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194 NULL,
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195 NULL
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diff changeset
196 };
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parents: 44099
diff changeset
197
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Mark Hammond <mhammond@skippinet.com.au>
parents: 23832
diff changeset
198 PyMODINIT_FUNC
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Martin v. Löwis <martin@v.loewis.de>
parents: 44099
diff changeset
199 PyInit_grp(void)
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parents:
diff changeset
200 {
22099
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Martin v. Löwis <martin@v.loewis.de>
parents: 21859
diff changeset
201 PyObject *m, *d;
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Martin v. Löwis <martin@v.loewis.de>
parents: 44099
diff changeset
202 m = PyModule_Create(&grpmodule);
36324
1af7f719ed28 Check return result from Py_InitModule*(). This API can fail.
Neal Norwitz <nnorwitz@gmail.com>
parents: 35551
diff changeset
203 if (m == NULL)
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parents: 44099
diff changeset
204 return NULL;
22099
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parents: 21859
diff changeset
205 d = PyModule_GetDict(m);
37879
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Thomas Wouters <thomas@python.org>
parents: 36324
diff changeset
206 if (!initialized)
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diff changeset
207 PyStructSequence_InitType(&StructGrpType, &struct_group_type_desc);
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Martin v. Löwis <martin@v.loewis.de>
parents: 21859
diff changeset
208 PyDict_SetItemString(d, "struct_group", (PyObject *) &StructGrpType);
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diff changeset
209 initialized = 1;
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diff changeset
210 return m;
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parents:
diff changeset
211 }