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| 1 | +#include <Python.h> |
| 2 | +#include "structmember.h" |
| 3 | +#include "r3.h" |
| 4 | +#include "r3_str.h" |
| 5 | +#include "str_array.h" |
| 6 | + |
| 7 | +typedef struct link_data{ |
| 8 | + PyObject* data; |
| 9 | + struct link_data* link; |
| 10 | +} LINK_NODE; |
| 11 | + |
| 12 | +typedef struct { |
| 13 | + PyObject_HEAD |
| 14 | + node *root; |
| 15 | + LINK_NODE* datas; |
| 16 | +} R3Tree; |
| 17 | + |
| 18 | + |
| 19 | +LINK_NODE *new_node(PyObject* data){ |
| 20 | + LINK_NODE *node; |
| 21 | + node=(LINK_NODE *) malloc(sizeof(LINK_NODE));/*<stdlib.h>*/ |
| 22 | + |
| 23 | + // 記憶體不足 |
| 24 | + if(node == NULL){ return NULL;} |
| 25 | + |
| 26 | + node->data=data; |
| 27 | + node->link=NULL; |
| 28 | + return node; |
| 29 | +} |
| 30 | + |
| 31 | +/* 加入新的資料於最後 */ |
| 32 | +LINK_NODE *push_node(LINK_NODE *list, PyObject* data){ |
| 33 | + /*產生新節點*/ |
| 34 | + LINK_NODE *node=new_node(data); |
| 35 | + |
| 36 | + // 加入第一個新節點 |
| 37 | + if(list==NULL){ |
| 38 | + list=node; |
| 39 | + } else{ |
| 40 | + LINK_NODE *p=list; |
| 41 | + // 取得最後一個節點 |
| 42 | + while(p->link!=NULL){p=p->link;} |
| 43 | + p->link=node; |
| 44 | + } |
| 45 | + return list; |
| 46 | +} |
| 47 | + |
| 48 | + |
| 49 | +static void clean_data(R3Tree* tree) { |
| 50 | + LINK_NODE *node = tree->datas, *next_node=NULL; |
| 51 | + |
| 52 | + while (node!=NULL) { |
| 53 | + Py_XDECREF(node->data); |
| 54 | + next_node = node->link; |
| 55 | + free(node); |
| 56 | + node = next_node; |
| 57 | + } |
| 58 | + tree->datas = NULL; |
| 59 | +} |
| 60 | + |
| 61 | +static void |
| 62 | +R3Tree_dealloc(R3Tree* self) |
| 63 | +{ |
| 64 | + int i=0; |
| 65 | + if(self->root != NULL) { |
| 66 | + clean_data(self); |
| 67 | + r3_tree_free(self->root); |
| 68 | + } |
| 69 | + self->root = NULL; |
| 70 | + self->datas = NULL; |
| 71 | + self->ob_type->tp_free((PyObject*)self); |
| 72 | +} |
| 73 | + |
| 74 | +static PyObject * |
| 75 | +R3Tree_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
| 76 | +{ |
| 77 | + R3Tree *self; |
| 78 | + |
| 79 | + self = (R3Tree *)type->tp_alloc(type, 0); |
| 80 | + if (self != NULL) { |
| 81 | + self->root = r3_tree_create(255); |
| 82 | + self->datas = new_node(NULL); |
| 83 | + } |
| 84 | + |
| 85 | + return (PyObject *)self; |
| 86 | +} |
| 87 | + |
| 88 | + |
| 89 | +static int |
| 90 | +R3Tree_init(R3Tree *self, PyObject *args, PyObject *kwds) |
| 91 | +{ |
| 92 | + // TODO: may need to add init here |
| 93 | + return 0; |
| 94 | +} |
| 95 | + |
| 96 | +static PyObject * |
| 97 | +R3Tree_insert_path(R3Tree* self, PyObject *args, PyObject *kwds) |
| 98 | +{ |
| 99 | + //http://stackoverflow.com/questions/9896032/how-to-get-a-char-from-a-pyobject-which-points-to-a-string |
| 100 | + PyObject* path = NULL, *data = NULL; |
| 101 | + |
| 102 | + static char *kwlist[] = {"path", "data", NULL}; |
| 103 | + |
| 104 | + if (! PyArg_ParseTupleAndKeywords(args, kwds, "|OO", kwlist, |
| 105 | + &path, &data)) |
| 106 | + return NULL ; |
| 107 | + |
| 108 | + if (path == NULL) { |
| 109 | + PyErr_SetString(PyExc_AttributeError, "path"); |
| 110 | + return NULL; |
| 111 | + } |
| 112 | + if (data == NULL) { |
| 113 | + PyErr_SetString(PyExc_AttributeError, "data"); |
| 114 | + return NULL; |
| 115 | + } |
| 116 | + |
| 117 | + Py_XINCREF(data); |
| 118 | + push_node(self->datas, data); |
| 119 | + PyObject* objectsRepresentation = PyObject_Repr(path); |
| 120 | + const char* s = PyString_AsString(objectsRepresentation); |
| 121 | + |
| 122 | + r3_tree_insert_path(self->root, s, data); |
| 123 | + |
| 124 | + // return None |
| 125 | + // http://code.activestate.com/recipes/52309-to-return-none-from-your-python-callable-c-functio/ |
| 126 | + return Py_None; |
| 127 | +} |
| 128 | + |
| 129 | +static PyObject* |
| 130 | +R3Tree_compile(R3Tree* self) { |
| 131 | + char *errstr = NULL; |
| 132 | + int err = r3_tree_compile(self->root, &errstr); |
| 133 | + return Py_None; |
| 134 | +} |
| 135 | + |
| 136 | +static PyObject* |
| 137 | +R3Tree_match(R3Tree* self, PyObject *args, PyObject *kwds) |
| 138 | +{ |
| 139 | + PyObject* path = NULL; |
| 140 | + |
| 141 | + static char *kwlist[] = {"path", NULL}; |
| 142 | + |
| 143 | + if (! PyArg_ParseTupleAndKeywords(args, kwds, "|O", kwlist, |
| 144 | + &path)) |
| 145 | + return NULL ; |
| 146 | + |
| 147 | + if(path == NULL) { |
| 148 | + PyErr_SetString(PyExc_AttributeError, "path"); |
| 149 | + return NULL; |
| 150 | + } |
| 151 | + |
| 152 | + PyObject* objectsRepresentation = PyObject_Repr(path); |
| 153 | + const char* s = PyString_AsString(objectsRepresentation); |
| 154 | + |
| 155 | + |
| 156 | + node* match_node = r3_tree_match(self->root, s, NULL); |
| 157 | + if(match_node != NULL) { |
| 158 | + return match_node->data; |
| 159 | + } |
| 160 | + |
| 161 | + return Py_None; |
| 162 | +} |
| 163 | + |
| 164 | +// https://docs.python.org/2/c-api/structures.html#PyMethodDef |
| 165 | +static PyMethodDef R3Tree_methods[] = { |
| 166 | + {"insert_path", (PyCFunction)R3Tree_insert_path, METH_KEYWORDS, |
| 167 | + "Return the name, combining the first and last name"}, |
| 168 | + {"compile", (PyCFunction)R3Tree_compile, METH_NOARGS, |
| 169 | + "compile"}, |
| 170 | + {"match", (PyCFunction)R3Tree_match, METH_KEYWORDS, |
| 171 | + "match"}, |
| 172 | + {NULL} /* Sentinel */ |
| 173 | +}; |
| 174 | + |
| 175 | + |
| 176 | +static PyTypeObject r3_TreeType = { |
| 177 | + PyObject_HEAD_INIT(NULL) |
| 178 | + 0, /*ob_size*/ |
| 179 | + "pyr3.R3Tree", /*tp_name*/ |
| 180 | + sizeof(R3Tree), /*tp_basicsize*/ |
| 181 | + 0, /*tp_itemsize*/ |
| 182 | + (destructor)R3Tree_dealloc,/*tp_dealloc*/ |
| 183 | + 0, /*tp_print*/ |
| 184 | + 0, /*tp_getattr*/ |
| 185 | + 0, /*tp_setattr*/ |
| 186 | + 0, /*tp_compare*/ |
| 187 | + 0, /*tp_repr*/ |
| 188 | + 0, /*tp_as_number*/ |
| 189 | + 0, /*tp_as_sequence*/ |
| 190 | + 0, /*tp_as_mapping*/ |
| 191 | + 0, /*tp_hash */ |
| 192 | + 0, /*tp_call*/ |
| 193 | + 0, /*tp_str*/ |
| 194 | + 0, /*tp_getattro*/ |
| 195 | + 0, /*tp_setattro*/ |
| 196 | + 0, /*tp_as_buffer*/ |
| 197 | + Py_TPFLAGS_DEFAULT, /*tp_flags*/ |
| 198 | + "R3 objects", /* tp_doc */ |
| 199 | + 0, /* tp_traverse */ |
| 200 | + 0, /* tp_clear */ |
| 201 | + 0, /* tp_richcompare */ |
| 202 | + 0, /* tp_weaklistoffset */ |
| 203 | + 0, /* tp_iter */ |
| 204 | + 0, /* tp_iternext */ |
| 205 | + R3Tree_methods, /* tp_methods */ |
| 206 | + 0, /* tp_members */ |
| 207 | + 0, /* tp_getset */ |
| 208 | + 0, /* tp_base */ |
| 209 | + 0, /* tp_dict */ |
| 210 | + 0, /* tp_descr_get */ |
| 211 | + 0, /* tp_descr_set */ |
| 212 | + 0, /* tp_dictoffset */ |
| 213 | + (initproc)R3Tree_init, /* tp_init */ |
| 214 | + 0, /* tp_alloc */ |
| 215 | + R3Tree_new, /* tp_new */ |
| 216 | +}; |
| 217 | + |
| 218 | +static PyMethodDef r3_methods[] = { |
| 219 | + {NULL} /* Sentinel */ |
| 220 | +}; |
| 221 | + |
| 222 | +#ifndef PyMODINIT_FUNC /* declarations for DLL import/export */ |
| 223 | +#define PyMODINIT_FUNC void |
| 224 | +#endif |
| 225 | +PyMODINIT_FUNC |
| 226 | +initpyr3(void) |
| 227 | +{ |
| 228 | + PyObject* m; |
| 229 | + if (PyType_Ready(&r3_TreeType) < 0) |
| 230 | + return; |
| 231 | + |
| 232 | + m = Py_InitModule3("pyr3", r3_methods, |
| 233 | + "Python wrapper for r3"); |
| 234 | + |
| 235 | + Py_INCREF(&r3_TreeType); |
| 236 | + PyModule_AddObject(m, "R3Tree", (PyObject *)&r3_TreeType); |
| 237 | +} |
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