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#pragma once
#include <util/stream/output.h>
#include <util/system/types.h>
#include <util/system/yassert.h>
class TContIOVector {
using TPart = IOutputStream::TPart;
public:
inline TContIOVector(TPart* parts, size_t count)
: Parts_(parts)
, Count_(count)
{
}
inline void Proceed(size_t len) noexcept {
while (Count_) {
if (len < Parts_->len) {
Parts_->len -= len;
Parts_->buf = (const char*)Parts_->buf + len;
return;
} else {
len -= Parts_->len;
--Count_;
++Parts_;
}
}
if (len) {
Y_ASSERT(0 && "non zero length left");
}
}
inline const TPart* Parts() const noexcept {
return Parts_;
}
inline size_t Count() const noexcept {
return Count_;
}
static inline size_t Bytes(const TPart* parts, size_t count) noexcept {
size_t ret = 0;
for (size_t i = 0; i < count; ++i) {
ret += parts[i].len;
}
return ret;
}
inline size_t Bytes() const noexcept {
return Bytes(Parts_, Count_);
}
inline bool Complete() const noexcept {
return !Count();
}
private:
TPart* Parts_;
size_t Count_;
};
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