putback()

istream_real & fl::istream_real::putback

(

char

c

)

Definition at line 384 of file istream.cpp.

                                          {
    if (pos_ > 0) {
        pos_--;
        buffer_[pos_] = c;
    } else {
        // Insert at beginning of buffer - shift existing data
        if (buffer_len_ < BUFFER_SIZE - 1) {
            for (fl::size i = buffer_len_; i > 0; --i) {
                buffer_[i] = buffer_[i-1];
            }
            buffer_[0] = c;
            buffer_len_++;
            buffer_[buffer_len_] = '\0';
        }
    }
    return *this;
}

References istream_real(), buffer_, buffer_len_, BUFFER_SIZE, and pos_.

Referenced by fl::istream::putback().

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