diff options
Diffstat (limited to 'src/libs/xpcom18a4/xpcom/io/nsIBinaryInputStream.idl')
-rw-r--r-- | src/libs/xpcom18a4/xpcom/io/nsIBinaryInputStream.idl | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/io/nsIBinaryInputStream.idl b/src/libs/xpcom18a4/xpcom/io/nsIBinaryInputStream.idl new file mode 100644 index 00000000..bc9ea0b5 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/io/nsIBinaryInputStream.idl @@ -0,0 +1,121 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * ***** 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 Mozilla Communicator client code, released + * March 31, 1998. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998-1999 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either of 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 ***** */ + +#include "nsIInputStream.idl" +#include "nsrootidl.idl" + +/** + * This interface allows consumption of primitive data types from a "binary + * stream" containing untagged, big-endian binary data, i.e. as produced by an + * implementation of nsIBinaryOutputStream. This might be used, for example, + * to implement network protocols or to read from architecture-neutral disk + * files, i.e. ones that can be read and written by both big-endian and + * little-endian platforms. + * + * @See nsIBinaryOutputStream + */ + +[scriptable, uuid(7b456cb0-8772-11d3-90cf-0040056a906e)] +interface nsIBinaryInputStream : nsIInputStream { + void setInputStream(in nsIInputStream aInputStream); + + PRBool readBoolean(); + + PRUint8 read8(); + PRUint16 read16(); + PRUint32 read32(); + PRUint64 read64(); + + float readFloat(); + double readDouble(); + + /** + * Read a NUL-terminated 8-bit char* string from a binary stream. + */ + ACString readCString(); + + /** + * Read a NUL-terminated 16-bit PRUnichar* string from a binary stream. + */ + AString readString(); + + /** + * Read an opaque byte array from a binary stream. + */ + void readBytes(in PRUint32 aLength, + [size_is(aLength), retval] out string aString); + + /** + * Read an opaque byte array from a binary stream, storing the results + * as an array of PRUint8s. + */ + void readByteArray(in PRUint32 aLength, + [array, size_is(aLength), retval] out PRUint8 aBytes); +}; + +%{C++ + +inline nsresult +NS_ReadOptionalCString(nsIBinaryInputStream* aStream, nsACString& aResult) +{ + PRBool nonnull; + nsresult rv = aStream->ReadBoolean(&nonnull); + if (NS_SUCCEEDED(rv)) { + if (nonnull) + rv = aStream->ReadCString(aResult); + else + aResult.Truncate(); + } + return rv; +} + +inline nsresult +NS_ReadOptionalString(nsIBinaryInputStream* aStream, nsAString& aResult) +{ + PRBool nonnull; + nsresult rv = aStream->ReadBoolean(&nonnull); + if (NS_SUCCEEDED(rv)) { + if (nonnull) + rv = aStream->ReadString(aResult); + else + aResult.Truncate(); + } + return rv; +} + +%} |