X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/libsecurity_utilities/lib/buffers.cpp diff --git a/libsecurity_utilities/lib/buffers.cpp b/libsecurity_utilities/lib/buffers.cpp deleted file mode 100644 index acfec8c8..00000000 --- a/libsecurity_utilities/lib/buffers.cpp +++ /dev/null @@ -1,106 +0,0 @@ -/* - * Copyright (c) 2000-2001,2003-2004 Apple Computer, Inc. All Rights Reserved. - * - * @APPLE_LICENSE_HEADER_START@ - * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and - * limitations under the License. - * - * @APPLE_LICENSE_HEADER_END@ - */ - - -// -// buffer - simple data buffers with convenience -// -#include "buffers.h" -#include -#include - - -namespace Security { - - -// -// Construct an empty Buffer from newly allocated memory -// -Buffer::Buffer(size_t size) - : mBase(new char[size]), mTop(mBase + size), mOwningMemory(true) -{ - mStart = mEnd = mBase; -} - - -// -// Construct a buffer from given memory, with given fill or ownership -// -Buffer::Buffer(void *base, size_t size, bool filled, bool owned) - : mBase(reinterpret_cast(base)), mTop(mBase + size), mOwningMemory(owned) -{ - mStart = mBase; - mEnd = filled ? mTop : mBase; -} - - -// -// Destroying a buffer deallocates its memory iff it owns it. -// -Buffer::~Buffer() -{ - if (mOwningMemory) - delete[] mBase; -} - - -// -// Shuffle buffer contents to make more room. -// Takes minimum size needed. Returns size available. -// -size_t Buffer::shuffle(size_t needed) -{ - assert(available() < needed); // shouldn't be called otherwise - size_t length = this->length(); - memmove(mBase, mStart, length); - mStart = mBase; - mEnd = mStart + length; - return min(needed, available()); -} - - -// -// Formatted append to buffer -// -void Buffer::printf(const char *format, ...) -{ - va_list args; - va_start(args, format); - vprintf(format, args); - va_end(args); -} - -void Buffer::vprintf(const char *format, va_list args) -{ - unsigned int written = vsnprintf(mEnd, mTop - mEnd, format, args); - if (written < available()) { - // overflow on formatting. Reshuffle and try again - shuffle(); - written = vsnprintf(mEnd, available(), format, args); - assert(written < available()); //@@@ throw here? - } - mEnd += written; // note: zero terminator discarded here -} - - -} // end namespace Security