intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 72 insertions, 0 deletions

diff --git a/library/cpp/getopt/small/ygetopt.h b/library/cpp/getopt/small/ygetopt.h
new file mode 100644
index 0000000000..615d3dd18e
--- /dev/null
+++ b/library/cpp/getopt/small/ygetopt.h
@@ -0,0 +1,72 @@
+#pragma once
+
+#include <util/generic/fwd.h>
+#include <util/generic/ptr.h>
+
+class TGetOpt {
+public:
+    class TIterator {
+        friend class TGetOpt;
+
+    public:
+        char Key() const noexcept;
+        const char* Arg() const noexcept;
+
+        inline bool HaveArg() const noexcept {
+            return Arg();
+        }
+
+        inline void operator++() {
+            Next();
+        }
+
+        inline bool operator==(const TIterator& r) const noexcept {
+            return AtEnd() == r.AtEnd();
+        }
+
+        inline bool operator!=(const TIterator& r) const noexcept {
+            return !(*this == r);
+        }
+
+        inline TIterator& operator*() noexcept {
+            return *this;
+        }
+
+        inline const TIterator& operator*() const noexcept {
+            return *this;
+        }
+
+        inline TIterator* operator->() noexcept {
+            return this;
+        }
+
+        inline const TIterator* operator->() const noexcept {
+            return this;
+        }
+
+    private:
+        TIterator() noexcept;
+        TIterator(const TGetOpt* parent);
+
+        void Next();
+        bool AtEnd() const noexcept;
+
+    private:
+        class TIterImpl;
+        TSimpleIntrusivePtr<TIterImpl> Impl_;
+    };
+
+    TGetOpt(int argc, const char* const* argv, const TString& format);
+
+    inline TIterator Begin() const {
+        return TIterator(this);
+    }
+
+    inline TIterator End() const noexcept {
+        return TIterator();
+    }
+
+private:
+    class TImpl;
+    TSimpleIntrusivePtr<TImpl> Impl_;
+};