本文整理汇总了C++中std::iostream::seekg方法的典型用法代码示例。如果您正苦于以下问题：C++ iostream::seekg方法的具体用法？C++ iostream::seekg怎么用？C++ iostream::seekg使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类std::iostream的用法示例。
在下文中一共展示了iostream::seekg方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: inttostr
void Client::setResponseContentLength(Transaction& trans, std::iostream& os)
{
os.seekg(0, std::ios::end);
int os_length = os.tellg();
os_length--;
os.seekg(0, std::ios::beg);
trans.getResponse().getHeaders().setValue("CONTENT-LENGTH", inttostr(os_length));
}示例2: saveFile
bool ResourceManager::saveFile(const std::string& fileName, std::iostream& in)
{
std::streampos oldPos = in.tellg();
in.seekg(0, std::ios::end);
std::streampos size = in.tellg();
in.seekg(0, std::ios::beg);
std::vector<char> buffer(size);
in.read(&buffer[0], size);
bool ret = saveFile(fileName, (const uchar*)&buffer[0], size);
in.seekg(oldPos, std::ios::beg);
return ret;
}示例3: loadFile
void ResourceManager::loadFile(const std::string& fileName, std::iostream& out)
{
out.clear(std::ios::goodbit);
if(m_hasSearchPath) {
std::string fullPath = resolvePath(fileName);
PHYSFS_file* file = PHYSFS_openRead(fullPath.c_str());
if(!file) {
out.clear(std::ios::failbit);
stdext::throw_exception(stdext::format("failed to load file '%s': %s", fullPath.c_str(), PHYSFS_getLastError()));
} else {
int fileSize = PHYSFS_fileLength(file);
if(fileSize > 0) {
std::vector<char> buffer(fileSize);
PHYSFS_read(file, (void*)&buffer[0], 1, fileSize);
out.write(&buffer[0], fileSize);
} else
out.clear(std::ios::eofbit);
PHYSFS_close(file);
out.seekg(0, std::ios::beg);
}
} else {
std::ifstream fin(fileName);
if(!fin) {
out.clear(std::ios::failbit);
stdext::throw_exception(stdext::format("failed to load file '%s': %s", fileName.c_str(), PHYSFS_getLastError()));
} else {
out << fin.rdbuf();
}
}
}示例4: FillStream
void FillStream(std::iostream& strm, RawData& expression)
{
static const std::string s_smallExpression("0123456789abcdefghijklmnopqrstuvwxyz");
static const int iterationsCount = 10;
for (int i = 0; i < iterationsCount; ++i)
{
strm << s_smallExpression;
}
size_t expressionSize = iterationsCount * s_smallExpression.size();
expression.resize(expressionSize);
strm.read(reinterpret_cast<char*>(&expression[0]), expressionSize);
strm.seekg(0);
}示例5: GetAsString
std::string StringUtilities::GetAsString(std::iostream& i_stream)
{
int length;
char* p_buffer;
// get length of file:
i_stream.seekg (0, std::iostream::end);
length = static_cast<int>(i_stream.tellg());
i_stream.seekg (0, std::iostream::beg);
// allocate memory:
p_buffer = new char [length];
//write file
int pos = 0;
while(i_stream.good())
{
p_buffer[pos] = i_stream.get();
++pos;
}
std::string out(p_buffer, pos);
delete[] p_buffer;
return out;
}