Function readall

tools/comdb2ar/util.cpp:181–200

ssize_t readall(int fd, void *buf, size_t nbytes)
// Read all the bytes requested from the given fd.  Returns the number of bytes
// read, or -1 on error or 0 on eof.
{
    char *cbuf = static_cast<char *>(buf);
    size_t total = 0;

    while(nbytes > 0) {
        ssize_t bytesread = read(fd, cbuf, nbytes);
        if(bytesread <= 0) {
            return bytesread;
        }

        cbuf += bytesread;
        nbytes -= bytesread;
        total += bytesread;
    }

    return total;
}

bool isDirectory(const std::string& file) {
    struct stat st;