intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 18 insertions, 0 deletions

diff --git a/library/cpp/charset/wide.cpp b/library/cpp/charset/wide.cpp
new file mode 100644
index 0000000000..d12b293817
--- /dev/null
+++ b/library/cpp/charset/wide.cpp
@@ -0,0 +1,18 @@
+#include "wide.h"
+
+bool CanBeEncoded(TWtringBuf text, ECharset encoding) {
+    const size_t LEN = 16;
+    const size_t BUFSIZE = LEN * 4;
+    char encodeBuf[BUFSIZE];
+    wchar16 decodeBuf[BUFSIZE];
+
+    while (!text.empty()) {
+        TWtringBuf src = text.NextTokAt(LEN);
+        TStringBuf encoded = NDetail::NBaseOps::Recode(src, encodeBuf, encoding);
+        TWtringBuf decoded = NDetail::NBaseOps::Recode(encoded, decodeBuf, encoding);
+        if (decoded != src)
+            return false;
+    }
+
+    return true;
+}