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io: return views from write wrappers

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This commit is contained in:
Danny Robson 2017-12-28 17:49:58 +11:00
parent f94be34ae4
commit f2fa90d043
1 changed files with 7 additions and 6 deletions
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13
io.hpp
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@ -49,7 +49,7 @@ namespace util {
//-------------------------------------------------------------------------
inline void
write (const posix::fd &dst, util::view<const char*> data)
write (const posix::fd &dst, util::view<const uint8_t*> data)
{
write (dst, std::data (data), std::size (data));
}
@ -74,12 +74,13 @@ namespace util {
/// in this event the progress may not be reported to the caller. in the
/// future an exception member variable may expose the information.
template <typename DstT, typename IteratorA, typename IteratorB>
void
write (DstT &dst, util::view<IteratorA, IteratorB> src)
util::view<IteratorA,IteratorB>
write (DstT &dst, const util::view<IteratorA, IteratorB> src)
{
for (auto cursor = src.begin (); cursor != src.end (); ) {
cursor = dst.write (view{cursor, src.end ()});
}
auto remain = src;
while (!remain.empty ())
remain = src - dst.write (remain);
return src;
}