91 lines
1.8 KiB
C++
91 lines
1.8 KiB
C++
// Copyright (c) 2008-2009 The Chromium Embedded Framework Authors. All rights
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// reserved. Use of this source code is governed by a BSD-style license that
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// can be found in the LICENSE file.
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#include "resource_util.h"
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bool LoadBinaryResource(int binaryId, DWORD &dwSize, LPBYTE &pBytes)
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{
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extern HINSTANCE hInst;
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HRSRC hRes = FindResource(hInst, MAKEINTRESOURCE(binaryId),
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MAKEINTRESOURCE(256));
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if(hRes)
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{
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HGLOBAL hGlob = LoadResource(hInst, hRes);
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if(hGlob)
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{
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dwSize = SizeofResource(hInst, hRes);
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pBytes = (LPBYTE)LockResource(hGlob);
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if(dwSize > 0 && pBytes)
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return true;
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}
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}
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return false;
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}
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// ClientReadHandler implementation
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ClientReadHandler::ClientReadHandler(LPBYTE pBytes, DWORD dwSize)
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: bytes_(pBytes), size_(dwSize), offset_(0) {}
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size_t ClientReadHandler::Read(void* ptr, size_t size, size_t n)
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{
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Lock();
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size_t s = (size_ - offset_) / size;
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size_t ret = min(n, s);
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memcpy(ptr, bytes_ + offset_, ret * size);
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offset_ += ret * size;
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Unlock();
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return ret;
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}
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int ClientReadHandler::Seek(long offset, int whence)
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{
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int rv = -1L;
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Lock();
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switch(whence) {
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case SEEK_CUR:
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if(offset_ + offset > size_) {
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break;
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}
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offset_ += offset;
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rv = offset_;
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break;
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case SEEK_END:
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if(offset > (int)size_) {
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break;
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}
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offset_ = size_ - offset;
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rv = offset_;
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case SEEK_SET:
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if(offset > (int)size_) {
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break;
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}
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offset_ = offset;
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rv = offset_;
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break;
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}
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Unlock();
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return rv;
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}
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long ClientReadHandler::Tell()
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{
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Lock();
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long rv = offset_;
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Unlock();
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return rv;
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}
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int ClientReadHandler::Eof()
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{
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Lock();
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int rv = (offset_ >= size_);
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Unlock();
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return rv;
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}
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