intermediate changes

ref:d5f945ecdc1f5af1ad57e12787c6b8ed1a9f0f12

1 files changed, 34 insertions, 0 deletions

diff --git a/library/cpp/case_insensitive_string/case_insensitive_char_traits.cpp b/library/cpp/case_insensitive_string/case_insensitive_char_traits.cpp
new file mode 100644
index 0000000000..14e6d1d51f
--- /dev/null
+++ b/library/cpp/case_insensitive_string/case_insensitive_char_traits.cpp
@@ -0,0 +1,34 @@
+#include "case_insensitive_char_traits.h"
+#include "case_insensitive_string.h"
+
+#include <util/string/escape.h>
+
+int TCaseInsensitiveCharTraits::compare(const char* s1, const char* s2, std::size_t n) {
+    while (n-- != 0) {
+        if (to_upper(*s1) < to_upper(*s2)) {
+            return -1;
+        }
+        if (to_upper(*s1) > to_upper(*s2)) {
+            return 1;
+        }
+        ++s1;
+        ++s2;
+    }
+    return 0;
+}
+
+const char* TCaseInsensitiveCharTraits::find(const char* s, std::size_t n, char a) {
+    auto const ua(to_upper(a));
+    while (n-- != 0) {
+        if (to_upper(*s) == ua)
+            return s;
+        s++;
+    }
+    return nullptr;
+}
+
+TCaseInsensitiveString EscapeC(const TCaseInsensitiveString& str) {
+    const auto result = EscapeC(str.data(), str.size());
+    return {result.data(), result.size()};
+}
+