From e791ac9a46095e0241181da89c35a7c702982c21 Mon Sep 17 00:00:00 2001 From: Hannes Schulze Date: Tue, 4 Feb 2025 19:25:03 +0100 Subject: clean up path logic a bit --- lib/nes/common/path-view.cc | 49 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 lib/nes/common/path-view.cc (limited to 'lib/nes/common/path-view.cc') diff --git a/lib/nes/common/path-view.cc b/lib/nes/common/path-view.cc new file mode 100644 index 0000000..47f198b --- /dev/null +++ b/lib/nes/common/path-view.cc @@ -0,0 +1,49 @@ +#include "nes/common/path-view.hh" + +namespace nes +{ + auto path_view::iterator::operator*() const -> std::string_view + { + return current_ ? 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(path_.size()) }; + } + + auto path_view::end() const -> iterator + { + return iterator{ path_.data() + path_.size(), 0, 0 }; + } +} // namespace nes \ No newline at end of file -- cgit v1.3.1