First steps towards a generalized converter of Python object
hierarchies to CoreFoundation object hierarchies and vice versa.
diff --git a/Mac/Modules/cf/pycfbridge.c b/Mac/Modules/cf/pycfbridge.c
new file mode 100644
index 0000000..76c5ad4
--- /dev/null
+++ b/Mac/Modules/cf/pycfbridge.c
@@ -0,0 +1,206 @@
+/*
+** Convert objects from Python to CoreFoundation and vice-versa.
+*/
+
+#ifdef WITHOUT_FRAMEWORKS
+#include <CFBase.h>
+#include <CFArray.h>
+#include <CFData.h>
+#include <CFDictionary.h>
+#include <CFString.h>
+#include <CFURL.h>
+#else
+#include <CoreServices/CoreServices.h>
+#endif
+
+#include "Python.h"
+#include "macglue.h"
+#include "pycfbridge.h"
+
+
+/* ---------------------------------------- */
+/* CoreFoundation objects to Python objects */
+/* ---------------------------------------- */
+
+PyObject *
+PyCF_CF2Python(CFTypeRef src) {
+ CFTypeID typeid;
+
+ typeid = CFGetTypeID(src);
+ if (typeid == CFArrayGetTypeID())
+ return PyCF_CF2Python_sequence((CFArrayRef)src);
+ if (typeid == CFDictionaryGetTypeID())
+ return PyCF_CF2Python_mapping((CFDictionaryRef)src);
+ return PyCF_CF2Python_simple(src);
+}
+
+PyObject *
+PyCF_CF2Python_sequence(CFArrayRef src) {
+ PyErr_SetString(PyExc_SystemError, "Not yet implemented");
+ return NULL;
+}
+
+PyObject *
+PyCF_CF2Python_mapping(CFTypeRef src) {
+ PyErr_SetString(PyExc_SystemError, "Not yet implemented");
+ return NULL;
+}
+
+PyObject *
+PyCF_CF2Python_simple(CFTypeRef src) {
+ CFTypeID typeid;
+
+ typeid = CFGetTypeID(src);
+ if (typeid == CFStringGetTypeID())
+ return PyCF_CF2Python_string((CFStringRef)src);
+ PyMac_Error(resNotFound);
+ return NULL;
+}
+
+/* Unsure - Return unicode or 8 bit strings? */
+PyObject *
+PyCF_CF2Python_string(CFStringRef src) {
+ int size = CFStringGetLength(src)+1;
+ Py_UNICODE *data = malloc(size*sizeof(Py_UNICODE));
+ CFRange range;
+ PyObject *rv;
+
+ range.location = 0;
+ range.length = size;
+ if( data == NULL ) return PyErr_NoMemory();
+ CFStringGetCharacters(src, range, data);
+ rv = (PyObject *)PyUnicode_FromUnicode(data, size);
+ free(data);
+ return rv;
+}
+
+/* ---------------------------------------- */
+/* Python objects to CoreFoundation objects */
+/* ---------------------------------------- */
+
+int
+PyCF_Python2CF(PyObject *src, CFTypeRef *dst) {
+
+ if (PySequence_Check(src))
+ return PyCF_Python2CF_sequence(src, (CFArrayRef *)dst);
+ if (PyMapping_Check(src))
+ return PyCF_Python2CF_mapping(src, (CFDictionaryRef *)dst);
+ return PyCF_Python2CF_simple(src, dst);
+}
+
+int
+PyCF_Python2CF_sequence(PyObject *src, CFArrayRef *dst) {
+ CFArrayRef rv = NULL;
+ CFTypeRef item_cf = NULL;
+ PyObject *item_py = NULL;
+ int size, i;
+
+ size = PySequence_Size(src);
+ rv = CFArrayCreateMutable((CFAllocatorRef)NULL, size, &kCFTypeArrayCallBacks);
+ if (rv == NULL) {
+ PyMac_Error(resNotFound);
+ goto err;
+ }
+
+ for( i=0; i<size; i++) {
+ item_py = PySequence_GetItem(src, i);
+ if (item_py == NULL) goto err;
+ if ( !PyCF_Python2CF(item_py, &item_cf)) goto err;
+ Py_DECREF(item_py);
+ CFArraySetValueAtIndex(rv, i, item_cf);
+ CFRelease(item_cf);
+ item_cf = NULL;
+ }
+ *dst = rv;
+ return 1;
+err:
+ Py_XDECREF(item_py);
+ if (rv) CFRelease(rv);
+ if (item_cf) CFRelease(item_cf);
+ return 0;
+}
+
+int
+PyCF_Python2CF_mapping(PyObject *src, CFDictionaryRef *dst) {
+ CFDictionaryRef rv = NULL;
+ PyObject *aslist = NULL;
+ CFTypeRef key_cf = NULL, value_cf = NULL;
+ PyObject *item_py = NULL, *key_py = NULL, *value_py = NULL;
+ int size, i;
+
+ size = PyMapping_Size(src);
+ rv = CFDictionaryCreateMutable((CFAllocatorRef)NULL, size,
+ &kCFTypeDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+ if (rv == NULL) {
+ PyMac_Error(resNotFound);
+ goto err;
+ }
+ if ( (aslist = PyMapping_Items(src)) == NULL ) goto err;
+
+ for( i=0; i<size; i++) {
+ item_py = PySequence_GetItem(aslist, i);
+ if (item_py == NULL) goto err;
+ if (!PyArg_ParseTuple(item_py, "OO", key_py, value_py)) goto err;
+ if ( !PyCF_Python2CF(key_py, &key_cf) ) goto err;
+ Py_DECREF(key_py);
+ if ( !PyCF_Python2CF(value_cf, &key_cf) ) goto err;
+ Py_DECREF(value_py);
+ CFDictionaryAddValue(rv, key_cf, value_cf);
+ CFRelease(key_cf);
+ key_cf = NULL;
+ CFRelease(value_cf);
+ value_cf = NULL;
+ }
+ *dst = rv;
+ return 1;
+err:
+ Py_XDECREF(item_py);
+ Py_XDECREF(key_py);
+ Py_XDECREF(value_py);
+ Py_XDECREF(aslist);
+ if (rv) CFRelease(rv);
+ if (key_cf) CFRelease(key_cf);
+ if (value_cf) CFRelease(value_cf);
+ return 0;
+}
+
+int
+PyCF_Python2CF_simple(PyObject *src, CFTypeRef *dst) {
+
+ if (PyObject_HasAttrString(src, "CFType")) {
+ *dst = PyObject_CallMethod(src, "CFType", "");
+ return (*dst != NULL);
+ }
+ if (PyString_Check(src) || PyUnicode_Check(src))
+ return PyCF_Python2CF_string(src, (CFStringRef *)dst);
+ PyErr_Format(PyExc_TypeError,
+ "Cannot convert %.500s objects to CF",
+ src->ob_type->tp_name);
+ return 0;
+}
+
+int
+PyCF_Python2CF_string(PyObject *src, CFStringRef *dst) {
+ char *chars;
+ CFIndex size;
+ UniChar *unichars;
+
+ if (PyString_Check(src)) {
+ if ((chars = PyString_AsString(src)) == NULL ) goto err;
+ *dst = CFStringCreateWithCString((CFAllocatorRef)NULL, chars, 0);
+ return 1;
+ }
+ if (PyUnicode_Check(src)) {
+ /* We use the CF types here, if Python was configured differently that will give an error */
+ size = PyUnicode_GetSize(src);
+ if ((unichars = PyUnicode_AsUnicode(src)) == NULL ) goto err;
+ *dst = CFStringCreateWithCharacters((CFAllocatorRef)NULL, unichars, size);
+ return 1;
+ }
+err:
+ PyErr_Format(PyExc_TypeError,
+ "Cannot convert %.500s objects to CF",
+ src->ob_type->tp_name);
+ return 0;
+}
diff --git a/Mac/Modules/cf/pycfbridge.h b/Mac/Modules/cf/pycfbridge.h
new file mode 100644
index 0000000..3377d5d
--- /dev/null
+++ b/Mac/Modules/cf/pycfbridge.h
@@ -0,0 +1,11 @@
+extern PyObject *PyCF_CF2Python(CFTypeRef src);
+extern PyObject *PyCF_CF2Python_sequence(CFArrayRef src);
+extern PyObject *PyCF_CF2Python_mapping(CFTypeRef src);
+extern PyObject *PyCF_CF2Python_simple(CFTypeRef src);
+extern PyObject *PyCF_CF2Python_string(CFStringRef src);
+
+extern int PyCF_Python2CF(PyObject *src, CFTypeRef *dst);
+extern int PyCF_Python2CF_sequence(PyObject *src, CFArrayRef *dst);
+extern int PyCF_Python2CF_mapping(PyObject *src, CFDictionaryRef *dst);
+extern int PyCF_Python2CF_simple(PyObject *src, CFTypeRef *dst);
+extern int PyCF_Python2CF_string(PyObject *src, CFStringRef *dst);
\ No newline at end of file