intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

3 files changed, 34 insertions, 0 deletions

diff --git a/library/cpp/string_utils/scan/scan.cpp b/library/cpp/string_utils/scan/scan.cpp
new file mode 100644
index 0000000000..fbc1fdf08f
--- /dev/null
+++ b/library/cpp/string_utils/scan/scan.cpp
@@ -0,0 +1 @@
+#include "scan.h"
diff --git a/library/cpp/string_utils/scan/scan.h b/library/cpp/string_utils/scan/scan.h
new file mode 100644
index 0000000000..703db54321
--- /dev/null
+++ b/library/cpp/string_utils/scan/scan.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <util/generic/strbuf.h>
+
+template <bool addAll, char sep, char sepKeyVal, class F>
+static inline void ScanKeyValue(TStringBuf s, F&& f) {
+    TStringBuf key, val;
+
+    while (!s.empty()) {
+        val = s.NextTok(sep);
+
+        if (val.empty()) {
+            continue; // && case
+        }
+
+        key = val.NextTok(sepKeyVal);
+
+        if (addAll || val.IsInited()) {
+            f(key, val); // includes empty keys
+        }
+    }
+}
diff --git a/library/cpp/string_utils/scan/ya.make b/library/cpp/string_utils/scan/ya.make
new file mode 100644
index 0000000000..2faae86b09
--- /dev/null
+++ b/library/cpp/string_utils/scan/ya.make
@@ -0,0 +1,11 @@
+OWNER(
+    g:util
+)
+
+LIBRARY()
+
+SRCS(
+    scan.cpp
+)
+
+END()