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#include "nes/common/path-view.hh"
#include "nes/common/debug.hh"
namespace nes
{
auto path_view::iterator::operator*() const -> std::string_view
{
NES_ASSERT(current_ != nullptr && component_length_ > 0 && "invalid iterator");
return std::string_view{ current_, component_length_ };
}
auto path_view::iterator::operator++() -> iterator&
{
// Move forward to next component
current_ += component_length_;
remaining_ -= component_length_;
// Skip over '/'.
while (remaining_ > 0 && *current_ == '/')
{
current_ += 1;
remaining_ -= 1;
}
// Scan until end of component to find its length.
component_length_ = 0;
while (component_length_ < remaining_ && current_[component_length_] != '/')
{
component_length_ += 1;
}
return *this;
}
auto path_view::iterator::operator++(int) -> iterator
{
auto const res = *this;
++*this;
return res;
}
auto path_view::begin() const -> iterator
{
return ++iterator{ path_.data(), 0, static_cast<u32>(path_.size()) };
}
auto path_view::end() const -> iterator
{
return iterator{ path_.data() + path_.size(), 0, 0 };
}
} // namespace nes
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