fix: replaceInPlace() std::wstring #4713

Foundation/include/Poco/String.h

@@ -21,17 +21,48 @@
 #include "Poco/Foundation.h"
 #include "Poco/Ascii.h"
 #include <cstring>
+#include <cwchar>
 #include <algorithm>
 
+
 // ignore loop unrolling warnings in this file
 #if defined(__clang__) && ((__clang_major__ > 3) || (__clang_major__ == 3 && __clang_minor__ >= 6))
 #	pragma clang diagnostic push
 #	pragma clang diagnostic ignored "-Wpass-failed"
 #endif
 
+
 namespace Poco {
 
 
+template <typename C>
+std::size_t cstrlen(const C* str)
+	/// Returns the length of a zero-terminated C string.
+	/// For char and wchar_t based strings, overloads are
+	/// provided that call strlen() and wcslen().
+{
+	const C* end = str;
+    while (*end) ++end;
+    return end - str;
+}
+
+
+inline std::size_t cstrlen(const char* str)
+	/// Returns the length of a zero-terminated C string.
+	/// This implementation calls std::strlen().
+{
+	return std::strlen(str);
+}
+
+
+inline std::size_t cstrlen(const wchar_t* str)
+	/// Returns the length of a zero-terminated C string.
+	/// This implementation calls std::wcslen().
+{
+	return std::wcslen(str);
+}
+
+
 template <class S>
 S trimLeft(const S& str)
 	/// Returns a copy of str with all leading
@@ -494,7 +525,7 @@ S& replaceInPlace(S& str, const typename S::value_type* from, const typename S::
 
 	S result;
 	typename S::size_type pos = 0;
-	typename S::size_type fromLen = std::strlen(from);
+	typename S::size_type fromLen = cstrlen(from);
 	result.append(str, 0, start);
 	do
 	{