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// read the file content, returns errno if error happens.
template<typename String>
int readFile(StringArg filename,
int maxSize,
String* content,
int64_t* fileSize = NULL,
int64_t* modifyTime = NULL,
int64_t* createTime = NULL)
{
ReadSmallFile file(filename);
return file.readToString(maxSize, content, fileSize, modifyTime, createTime);
}
template int FileUtil::readFile(StringArg filename,
int maxSize,
string* content,
int64_t*, int64_t*, int64_t*);