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Fixed overflow implementation.

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This commit is contained in:
Michael Kasperovich 2015-11-19 22:23:42 +03:00
parent 914853716b
commit 9ffdec9622
1 changed files with 21 additions and 9 deletions
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30
format.h
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@ -2640,25 +2640,37 @@ class basic_formatbuf : public std::basic_streambuf<Elem, Traits> {
typedef typename std::basic_streambuf<Elem, Traits>::int_type int_type;
typedef typename std::basic_streambuf<Elem, Traits>::traits_type traits_type;
using std::basic_streambuf<Elem, Traits>::setp;
using std::basic_streambuf<Elem, Traits>::pptr;
using std::basic_streambuf<Elem, Traits>::pbase;
Buffer<Elem>& buffer_;
Elem* start_;
public:
basic_formatbuf(Buffer<Elem>& buffer) : buffer_(buffer) {
basic_formatbuf(Buffer<Elem>& buffer) : buffer_(buffer), start_(&buffer[0]) {
Elem* start = &buffer_[0];
setp(start, start + buffer_.size(), start + buffer_.capacity());
setp(start_, start_ + buffer_.capacity());
}
virtual int_type overflow(int_type) {
buffer_.reserve(buffer_.capacity() * 2);
Elem* start = &buffer_[0];
setp(start, start + buffer_.size(), start + buffer_.capacity());
virtual int_type overflow(int_type _Meta = traits_type::eof()) {
return traits_type::to_int_type(*pptr());
if (!traits_type::eq_int_type(_Meta, traits_type::eof())) {
size_t size = pptr() - start_;
buffer_.resize(size);
buffer_.reserve(size * 2);
start_ = &buffer_[0];
start_[size] = traits_type::to_char_type(_Meta);
setp(start_+ size + 1, start_ + size * 2);
}
return _Meta;
}
size_t size() {
return this->pptr() - this->pbase();
return pptr() - start_;
}
};