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Diffstat (limited to 'src/libs/xpcom18a4/python/src/PyGInputStream.cpp')
| -rw-r--r-- | src/libs/xpcom18a4/python/src/PyGInputStream.cpp | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/python/src/PyGInputStream.cpp b/src/libs/xpcom18a4/python/src/PyGInputStream.cpp new file mode 100644 index 00000000..d7c27043 --- /dev/null +++ b/src/libs/xpcom18a4/python/src/PyGInputStream.cpp @@ -0,0 +1,173 @@ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is the Python XPCOM language bindings. + * + * The Initial Developer of the Original Code is + * ActiveState Tool Corp. + * Portions created by the Initial Developer are Copyright (C) 2000 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Mark Hammond <MarkH@ActiveState.com> (original author) + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +// PyGInputStream.cpp +// +// This code is part of the XPCOM extensions for Python. +// +// Written October 2000 by Mark Hammond. +// +// Based heavily on the Python COM support, which is +// (c) Mark Hammond and Greg Stein. +// +// (c) 2000, ActiveState corp. + +#include "PyXPCOM_std.h" +#include <nsIInputStream.h> + +class PyG_nsIInputStream : public PyG_Base, public nsIInputStream +{ +public: + PyG_nsIInputStream(PyObject *instance) : PyG_Base(instance, NS_GET_IID(nsIInputStream)) {;} + PYGATEWAY_BASE_SUPPORT(nsIInputStream, PyG_Base); + + NS_IMETHOD Close(void); + NS_IMETHOD Available(PRUint32 *_retval); + NS_IMETHOD Read(char * buf, PRUint32 count, PRUint32 *_retval); + NS_IMETHOD ReadSegments(nsWriteSegmentFun writer, void * closure, PRUint32 count, PRUint32 *_retval); + NS_IMETHOD IsNonBlocking(PRBool *aNonBlocking); +}; + + +PyG_Base *MakePyG_nsIInputStream(PyObject *instance) +{ + return new PyG_nsIInputStream(instance); +} + +NS_IMETHODIMP +PyG_nsIInputStream::Close() +{ + CEnterLeavePython _celp; + const char *methodName = "close"; + return InvokeNativeViaPolicy(methodName, NULL); +} + +NS_IMETHODIMP +PyG_nsIInputStream::Available(PRUint32 *_retval) +{ + NS_PRECONDITION(_retval, "null pointer"); + CEnterLeavePython _celp; + PyObject *ret; + const char *methodName = "available"; + nsresult nr = InvokeNativeViaPolicy(methodName, &ret); + if (NS_SUCCEEDED(nr)) { + *_retval = PyInt_AsLong(ret); + if (PyErr_Occurred()) + nr = HandleNativeGatewayError(methodName); + Py_XDECREF(ret); + } + return nr; +} + +NS_IMETHODIMP +PyG_nsIInputStream::Read(char * buf, PRUint32 count, PRUint32 *_retval) +{ + NS_PRECONDITION(_retval, "null pointer"); + NS_PRECONDITION(buf, "null pointer"); + CEnterLeavePython _celp; + PyObject *ret; + const char *methodName = "read"; + nsresult nr = InvokeNativeViaPolicy(methodName, &ret, "i", count); + if (NS_SUCCEEDED(nr)) { +#if 0 /* VBox: new buffer protocol (though I could use it for Py_LIMITED_API and ditch the warning, but cpython specific) */ + Py_buffer py_view; + if (PyObject_GetBuffer(ret, &py_view, PyBUF_SIMPLE) == 0) { + if (py_view.len <= count) { + count = py_view.len; + } else { + PyXPCOM_LogWarning("nsIInputStream::read() was asked for %d bytes, but the string returned is %d bytes - truncating!\n", count, py_size); + } + memcpy(buf, py_view.py_buf, count); + PyBuffer_Release(&py_view); + *_retval = count; + } else { + PyErr_Format(PyExc_TypeError, "nsIInputStream::read() method must return a buffer object - not a '%s' object", PyXPCOM_ObTypeName(ret)); + nr = HandleNativeGatewayError(methodName); + } +#else /* Old protocol: */ +# ifndef VBOX /* unsafe cast on 64-bit hosts. */ + PRUint32 py_size; + const void *py_buf; + if (PyObject_AsReadBuffer(ret, &py_buf, (Py_ssize_t*)&py_size)!=0) { +# else /* VBOX */ + const void *py_buf; +# if PY_VERSION_HEX >= 0x02050000 || defined(PY_SSIZE_T_MIN) + Py_ssize_t py_size; +# else + int py_size; +# endif + if (PyObject_AsReadBuffer(ret, &py_buf, &py_size)!=0) { +# endif /* VBOX */ + PyErr_Format(PyExc_TypeError, "nsIInputStream::read() method must return a buffer object - not a '%s' object", PyXPCOM_ObTypeName(ret)); + nr = HandleNativeGatewayError(methodName); + } else { + if (py_size > count) { + PyXPCOM_LogWarning("nsIInputStream::read() was asked for %d bytes, but the string returned is %d bytes - truncating!\n", count, py_size); + py_size = count; + } + memcpy(buf, py_buf, py_size); + *_retval = py_size; + } +#endif + } + return nr; +} + + +NS_IMETHODIMP +PyG_nsIInputStream::ReadSegments(nsWriteSegmentFun writer, void * closure, PRUint32 count, PRUint32 *_retval) +{ + NS_WARNING("ReadSegments() not implemented!!!"); + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +PyG_nsIInputStream::IsNonBlocking(PRBool *aNonBlocking) +{ + NS_PRECONDITION(aNonBlocking, "null pointer"); + CEnterLeavePython _celp; + PyObject *ret; + const char *methodName = "isNonBlocking"; + nsresult nr = InvokeNativeViaPolicy(methodName, &ret); + if (NS_SUCCEEDED(nr)) { + *aNonBlocking = PyInt_AsLong(ret); + if (PyErr_Occurred()) + nr = HandleNativeGatewayError(methodName); + Py_XDECREF(ret); + } + return nr; +} |