| 1 | /*
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| 2 | ** Convert objects from Python to CoreFoundation and vice-versa.
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| 3 | */
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| 4 |
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| 5 | #include <CoreServices/CoreServices.h>
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| 6 |
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| 7 | #include "Python.h"
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| 8 | #include "pymactoolbox.h"
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| 9 | #include "pycfbridge.h"
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| 10 |
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| 11 |
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| 12 | /* ---------------------------------------- */
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| 13 | /* CoreFoundation objects to Python objects */
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| 14 | /* ---------------------------------------- */
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| 15 |
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| 16 | PyObject *
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| 17 | PyCF_CF2Python(CFTypeRef src) {
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| 18 | CFTypeID typeid;
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| 19 |
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| 20 | if( src == NULL ) {
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| 21 | Py_INCREF(Py_None);
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| 22 | return Py_None;
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| 23 | }
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| 24 | typeid = CFGetTypeID(src);
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| 25 | if (typeid == CFArrayGetTypeID())
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| 26 | return PyCF_CF2Python_sequence((CFArrayRef)src);
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| 27 | if (typeid == CFDictionaryGetTypeID())
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| 28 | return PyCF_CF2Python_mapping((CFDictionaryRef)src);
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| 29 | return PyCF_CF2Python_simple(src);
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| 30 | }
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| 31 |
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| 32 | PyObject *
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| 33 | PyCF_CF2Python_sequence(CFArrayRef src) {
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| 34 | int size = CFArrayGetCount(src);
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| 35 | PyObject *rv;
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| 36 | CFTypeRef item_cf;
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| 37 | PyObject *item_py = NULL;
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| 38 | int i;
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| 39 |
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| 40 | if ( (rv=PyList_New(size)) == NULL )
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| 41 | return NULL;
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| 42 | for(i=0; i<size; i++) {
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| 43 | item_cf = CFArrayGetValueAtIndex(src, i);
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| 44 | if (item_cf == NULL ) goto err;
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| 45 | item_py = PyCF_CF2Python(item_cf);
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| 46 | if (item_py == NULL ) goto err;
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| 47 | if (PyList_SetItem(rv, i, item_py) < 0) goto err;
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| 48 | item_py = NULL;
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| 49 | }
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| 50 | return rv;
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| 51 | err:
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| 52 | Py_XDECREF(item_py);
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| 53 | Py_DECREF(rv);
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| 54 | return NULL;
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| 55 | }
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| 56 |
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| 57 | PyObject *
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| 58 | PyCF_CF2Python_mapping(CFTypeRef src) {
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| 59 | int size = CFDictionaryGetCount(src);
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| 60 | PyObject *rv = NULL;
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| 61 | CFTypeRef *allkeys = NULL, *allvalues = NULL;
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| 62 | CFTypeRef key_cf, value_cf;
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| 63 | PyObject *key_py = NULL, *value_py = NULL;
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| 64 | int i;
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| 65 |
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| 66 | allkeys = malloc(size*sizeof(CFTypeRef *));
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| 67 | if (allkeys == NULL) {
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| 68 | PyErr_NoMemory();
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| 69 | goto err;
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| 70 | }
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| 71 | allvalues = malloc(size*sizeof(CFTypeRef *));
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| 72 | if (allvalues == NULL) {
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| 73 | PyErr_NoMemory();
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| 74 | goto err;
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| 75 | }
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| 76 | if ( (rv=PyDict_New()) == NULL ) goto err;
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| 77 | CFDictionaryGetKeysAndValues(src, allkeys, allvalues);
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| 78 | for(i=0; i<size; i++) {
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| 79 | key_cf = allkeys[i];
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| 80 | value_cf = allvalues[i];
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| 81 | key_py = PyCF_CF2Python(key_cf);
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| 82 | if (key_py == NULL ) goto err;
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| 83 | value_py = PyCF_CF2Python(value_cf);
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| 84 | if (value_py == NULL ) goto err;
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| 85 | if (PyDict_SetItem(rv, key_py, value_py) < 0) goto err;
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| 86 | key_py = NULL;
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| 87 | value_py = NULL;
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| 88 | }
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| 89 | return rv;
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| 90 | err:
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| 91 | Py_XDECREF(key_py);
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| 92 | Py_XDECREF(value_py);
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| 93 | Py_XDECREF(rv);
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| 94 | free(allkeys);
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| 95 | free(allvalues);
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| 96 | return NULL;
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| 97 | }
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| 98 |
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| 99 | PyObject *
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| 100 | PyCF_CF2Python_simple(CFTypeRef src) {
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| 101 | CFTypeID typeid;
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| 102 |
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| 103 | typeid = CFGetTypeID(src);
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| 104 | if (typeid == CFStringGetTypeID())
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| 105 | return PyCF_CF2Python_string((CFStringRef)src);
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| 106 | if (typeid == CFBooleanGetTypeID())
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| 107 | return PyBool_FromLong((long)CFBooleanGetValue(src));
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| 108 | if (typeid == CFNumberGetTypeID()) {
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| 109 | if (CFNumberIsFloatType(src)) {
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| 110 | double d;
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| 111 | CFNumberGetValue(src, kCFNumberDoubleType, &d);
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| 112 | return PyFloat_FromDouble(d);
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| 113 | } else {
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| 114 | long l;
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| 115 | if (!CFNumberGetValue(src, kCFNumberLongType, &l))
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| 116 | /* XXXX Out of range! */;
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| 117 | return PyInt_FromLong(l);
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| 118 | }
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| 119 | }
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| 120 | /* XXXX Should return as CFTypeRef, really... */
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| 121 | PyMac_Error(resNotFound);
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| 122 | return NULL;
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| 123 | }
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| 124 |
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| 125 | /* Unsure - Return unicode or 8 bit strings? */
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| 126 | PyObject *
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| 127 | PyCF_CF2Python_string(CFStringRef src) {
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| 128 | int size = CFStringGetLength(src)+1;
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| 129 | Py_UNICODE *data = malloc(size*sizeof(Py_UNICODE));
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| 130 | CFRange range;
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| 131 | PyObject *rv;
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| 132 |
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| 133 | range.location = 0;
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| 134 | range.length = size;
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| 135 | if( data == NULL ) return PyErr_NoMemory();
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| 136 | CFStringGetCharacters(src, range, data);
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| 137 | rv = (PyObject *)PyUnicode_FromUnicode(data, size-1);
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| 138 | free(data);
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| 139 | return rv;
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| 140 | }
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| 141 |
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| 142 | /* ---------------------------------------- */
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| 143 | /* Python objects to CoreFoundation objects */
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| 144 | /* ---------------------------------------- */
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| 145 |
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| 146 | int
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| 147 | PyCF_Python2CF(PyObject *src, CFTypeRef *dst) {
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| 148 |
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| 149 | if (PyString_Check(src) || PyUnicode_Check(src))
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| 150 | return PyCF_Python2CF_simple(src, dst);
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| 151 | if (PySequence_Check(src))
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| 152 | return PyCF_Python2CF_sequence(src, (CFArrayRef *)dst);
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| 153 | if (PyMapping_Check(src))
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| 154 | return PyCF_Python2CF_mapping(src, (CFDictionaryRef *)dst);
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| 155 | return PyCF_Python2CF_simple(src, dst);
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| 156 | }
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| 157 |
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| 158 | int
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| 159 | PyCF_Python2CF_sequence(PyObject *src, CFArrayRef *dst) {
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| 160 | CFMutableArrayRef rv = NULL;
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| 161 | CFTypeRef item_cf = NULL;
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| 162 | PyObject *item_py = NULL;
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| 163 | int size, i;
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| 164 |
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| 165 | if( !PySequence_Check(src) ) {
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| 166 | PyErr_Format(PyExc_TypeError,
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| 167 | "Cannot convert %.500s objects to CFArray",
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| 168 | src->ob_type->tp_name);
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| 169 | return 0;
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| 170 | }
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| 171 | size = PySequence_Size(src);
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| 172 | rv = CFArrayCreateMutable((CFAllocatorRef)NULL, size, &kCFTypeArrayCallBacks);
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| 173 | if (rv == NULL) {
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| 174 | PyMac_Error(resNotFound);
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| 175 | goto err;
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| 176 | }
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| 177 |
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| 178 | for( i=0; i<size; i++) {
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| 179 | item_py = PySequence_GetItem(src, i);
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| 180 | if (item_py == NULL) goto err;
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| 181 | if ( !PyCF_Python2CF(item_py, &item_cf)) goto err;
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| 182 | Py_DECREF(item_py);
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| 183 | CFArraySetValueAtIndex(rv, i, item_cf);
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| 184 | CFRelease(item_cf);
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| 185 | item_cf = NULL;
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| 186 | }
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| 187 | *dst = rv;
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| 188 | return 1;
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| 189 | err:
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| 190 | Py_XDECREF(item_py);
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| 191 | if (rv) CFRelease(rv);
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| 192 | if (item_cf) CFRelease(item_cf);
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| 193 | return 0;
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| 194 | }
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| 195 |
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| 196 | int
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| 197 | PyCF_Python2CF_mapping(PyObject *src, CFDictionaryRef *dst) {
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| 198 | CFMutableDictionaryRef rv = NULL;
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| 199 | PyObject *aslist = NULL;
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| 200 | CFTypeRef key_cf = NULL, value_cf = NULL;
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| 201 | PyObject *item_py = NULL, *key_py = NULL, *value_py = NULL;
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| 202 | int size, i;
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| 203 |
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| 204 | if( !PyMapping_Check(src) ) {
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| 205 | PyErr_Format(PyExc_TypeError,
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| 206 | "Cannot convert %.500s objects to CFDictionary",
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| 207 | src->ob_type->tp_name);
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| 208 | return 0;
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| 209 | }
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| 210 | size = PyMapping_Size(src);
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| 211 | rv = CFDictionaryCreateMutable((CFAllocatorRef)NULL, size,
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| 212 | &kCFTypeDictionaryKeyCallBacks,
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| 213 | &kCFTypeDictionaryValueCallBacks);
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| 214 | if (rv == NULL) {
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| 215 | PyMac_Error(resNotFound);
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| 216 | goto err;
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| 217 | }
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| 218 | if ( (aslist = PyMapping_Items(src)) == NULL ) goto err;
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| 219 |
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| 220 | for( i=0; i<size; i++) {
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| 221 | item_py = PySequence_GetItem(aslist, i);
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| 222 | if (item_py == NULL) goto err;
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| 223 | if (!PyArg_ParseTuple(item_py, "OO", &key_py, &value_py)) goto err;
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| 224 | if ( !PyCF_Python2CF(key_py, &key_cf) ) goto err;
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| 225 | if ( !PyCF_Python2CF(value_py, &value_cf) ) goto err;
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| 226 | CFDictionaryAddValue(rv, key_cf, value_cf);
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| 227 | CFRelease(key_cf);
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| 228 | key_cf = NULL;
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| 229 | CFRelease(value_cf);
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| 230 | value_cf = NULL;
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| 231 | }
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| 232 | *dst = rv;
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| 233 | return 1;
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| 234 | err:
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| 235 | Py_XDECREF(item_py);
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| 236 | Py_XDECREF(aslist);
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| 237 | if (rv) CFRelease(rv);
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| 238 | if (key_cf) CFRelease(key_cf);
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| 239 | if (value_cf) CFRelease(value_cf);
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| 240 | return 0;
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| 241 | }
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| 242 |
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| 243 | int
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| 244 | PyCF_Python2CF_simple(PyObject *src, CFTypeRef *dst) {
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| 245 |
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| 246 | #if 0
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| 247 | if (PyObject_HasAttrString(src, "CFType")) {
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| 248 | *dst = PyObject_CallMethod(src, "CFType", "");
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| 249 | return (*dst != NULL);
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| 250 | }
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| 251 | #endif
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| 252 | if (PyString_Check(src) || PyUnicode_Check(src))
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| 253 | return PyCF_Python2CF_string(src, (CFStringRef *)dst);
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| 254 | if (PyBool_Check(src)) {
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| 255 | if (src == Py_True)
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| 256 | *dst = kCFBooleanTrue;
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| 257 | else
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| 258 | *dst = kCFBooleanFalse;
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| 259 | return 1;
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| 260 | }
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| 261 | if (PyInt_Check(src)) {
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| 262 | long v = PyInt_AsLong(src);
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| 263 | *dst = CFNumberCreate(NULL, kCFNumberLongType, &v);
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| 264 | return 1;
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| 265 | }
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| 266 | if (PyFloat_Check(src)) {
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| 267 | double d = PyFloat_AsDouble(src);
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| 268 | *dst = CFNumberCreate(NULL, kCFNumberDoubleType, &d);
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| 269 | return 1;
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| 270 | }
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| 271 |
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| 272 | PyErr_Format(PyExc_TypeError,
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| 273 | "Cannot convert %.500s objects to CFType",
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| 274 | src->ob_type->tp_name);
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| 275 | return 0;
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| 276 | }
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| 277 |
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| 278 | int
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| 279 | PyCF_Python2CF_string(PyObject *src, CFStringRef *dst) {
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| 280 | char *chars;
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| 281 | CFIndex size;
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| 282 | UniChar *unichars;
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| 283 |
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| 284 | if (PyString_Check(src)) {
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| 285 | if (!PyArg_Parse(src, "es", "ascii", &chars))
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| 286 | return 0; /* This error is more descriptive than the general one below */
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| 287 | *dst = CFStringCreateWithCString((CFAllocatorRef)NULL, chars, kCFStringEncodingASCII);
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| 288 | PyMem_Free(chars);
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| 289 | return 1;
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| 290 | }
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| 291 | if (PyUnicode_Check(src)) {
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| 292 | /* We use the CF types here, if Python was configured differently that will give an error */
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| 293 | size = PyUnicode_GetSize(src);
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| 294 | if ((unichars = PyUnicode_AsUnicode(src)) == NULL ) goto err;
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| 295 | *dst = CFStringCreateWithCharacters((CFAllocatorRef)NULL, unichars, size);
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| 296 | return 1;
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| 297 | }
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| 298 | err:
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| 299 | PyErr_Format(PyExc_TypeError,
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| 300 | "Cannot convert %.500s objects to CFString",
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| 301 | src->ob_type->tp_name);
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| 302 | return 0;
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| 303 | }
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