diff --git a/dlls/kernelbase/Makefile.in b/dlls/kernelbase/Makefile.in
index 88ba774a7c1..dcb03b4fdcc 100644
--- a/dlls/kernelbase/Makefile.in
+++ b/dlls/kernelbase/Makefile.in
@@ -3,4 +3,5 @@ IMPORTS = uuid
 
 C_SRCS = \
 	main.c \
-	path.c
+	path.c \
+	string.c
diff --git a/dlls/kernelbase/kernelbase.spec b/dlls/kernelbase/kernelbase.spec
index 7108c40a01f..8294c95282a 100644
--- a/dlls/kernelbase/kernelbase.spec
+++ b/dlls/kernelbase/kernelbase.spec
@@ -131,7 +131,7 @@
 @ stdcall CheckTokenMembership(long ptr ptr) advapi32.CheckTokenMembership
 # @ stub CheckTokenMembershipEx
 @ stdcall ChrCmpIA(long long) shlwapi.ChrCmpIA
-@ stdcall ChrCmpIW(long long) shlwapi.ChrCmpIW
+@ stdcall ChrCmpIW(long long)
 @ stdcall ClearCommBreak(long) kernel32.ClearCommBreak
 @ stdcall ClearCommError(long ptr ptr) kernel32.ClearCommError
 # @ stub CloseGlobalizationUserSettingsKey
@@ -843,17 +843,17 @@
 @ stdcall IsCharAlphaNumericA(long) user32.IsCharAlphaNumericA
 @ stdcall IsCharAlphaNumericW(long) user32.IsCharAlphaNumericW
 @ stdcall IsCharAlphaW(long) user32.IsCharAlphaW
-@ stdcall IsCharBlankW(long) shlwapi.IsCharBlankW
-@ stdcall IsCharCntrlW(ptr) shlwapi.IsCharCntrlW
-@ stdcall IsCharDigitW(long) shlwapi.IsCharDigitW
+@ stdcall IsCharBlankW(long)
+@ stdcall IsCharCntrlW(long)
+@ stdcall IsCharDigitW(long)
 @ stdcall IsCharLowerA(long) user32.IsCharLowerA
 @ stdcall IsCharLowerW(long) user32.IsCharLowerW
-@ stdcall IsCharPunctW(long) shlwapi.IsCharPunctW
-@ stdcall IsCharSpaceA(long) shlwapi.IsCharSpaceA
-@ stdcall IsCharSpaceW(long) shlwapi.IsCharSpaceW
+@ stdcall IsCharPunctW(long)
+@ stdcall IsCharSpaceA(long)
+@ stdcall IsCharSpaceW(long)
 @ stdcall IsCharUpperA(long) user32.IsCharUpperA
 @ stdcall IsCharUpperW(long) user32.IsCharUpperW
-@ stdcall IsCharXDigitW(long) shlwapi.IsCharXDigitW
+@ stdcall IsCharXDigitW(long)
 @ stdcall IsDBCSLeadByte(long) kernel32.IsDBCSLeadByte
 @ stdcall IsDBCSLeadByteEx(long long) kernel32.IsDBCSLeadByteEx
 @ stdcall IsDebuggerPresent() kernel32.IsDebuggerPresent
@@ -1535,56 +1535,56 @@
 @ stdcall StrChrA(str long) shlwapi.StrChrA
 # @ stub StrChrA_MB
 @ stdcall StrChrIA(str long) shlwapi.StrChrIA
-@ stdcall StrChrIW(wstr long) shlwapi.StrChrIW
+@ stdcall StrChrIW(wstr long)
 # @ stub StrChrNIW
-@ stdcall StrChrNW(wstr long long) shlwapi.StrChrNW
-@ stdcall StrChrW(wstr long) shlwapi.StrChrW
-@ stdcall StrCmpCA(str str) shlwapi.StrCmpCA
-@ stdcall StrCmpCW(wstr wstr) shlwapi.StrCmpCW
-@ stdcall StrCmpICA(str str) shlwapi.StrCmpICA
-@ stdcall StrCmpICW(wstr wstr) shlwapi.StrCmpICW
-@ stdcall StrCmpIW(wstr wstr) shlwapi.StrCmpIW
+@ stdcall StrChrNW(wstr long long)
+@ stdcall StrChrW(wstr long)
+@ stdcall StrCmpCA(str str)
+@ stdcall StrCmpCW(wstr wstr)
+@ stdcall StrCmpICA(str str)
+@ stdcall StrCmpICW(wstr wstr)
+@ stdcall StrCmpIW(wstr wstr)
 @ stdcall StrCmpLogicalW(wstr wstr) shlwapi.StrCmpLogicalW
 @ stdcall StrCmpNA(str str long) shlwapi.StrCmpNA
 @ stdcall StrCmpNCA(str ptr long) shlwapi.StrCmpNCA
 @ stdcall StrCmpNCW(wstr wstr long) shlwapi.StrCmpNCW
-@ stdcall StrCmpNIA(str str long) shlwapi.StrCmpNIA
-@ stdcall StrCmpNICA(long long long) shlwapi.StrCmpNICA
-@ stdcall StrCmpNICW(wstr wstr long) shlwapi.StrCmpNICW
-@ stdcall StrCmpNIW(wstr wstr long) shlwapi.StrCmpNIW
-@ stdcall StrCmpNW(wstr wstr long) shlwapi.StrCmpNW
-@ stdcall StrCmpW(wstr wstr) shlwapi.StrCmpW
-@ stdcall StrCpyNW(ptr wstr long) shlwapi.StrCpyNW
-@ stdcall StrCpyNXA(ptr str long) shlwapi.StrCpyNXA
-@ stdcall StrCpyNXW(ptr wstr long) shlwapi.StrCpyNXW
-@ stdcall StrDupA(str) shlwapi.StrDupA
-@ stdcall StrDupW(wstr) shlwapi.StrDupW
+@ stdcall StrCmpNIA(str str long)
+@ stdcall StrCmpNICA(long long long)
+@ stdcall StrCmpNICW(wstr wstr long)
+@ stdcall StrCmpNIW(wstr wstr long)
+@ stdcall StrCmpNW(wstr wstr long)
+@ stdcall StrCmpW(wstr wstr)
+@ stdcall StrCpyNW(ptr wstr long)
+@ stdcall StrCpyNXA(ptr str long)
+@ stdcall StrCpyNXW(ptr wstr long)
+@ stdcall StrDupA(str)
+@ stdcall StrDupW(wstr)
 @ stdcall StrIsIntlEqualA(long str str long) shlwapi.StrIsIntlEqualA
 @ stdcall StrIsIntlEqualW(long wstr wstr long) shlwapi.StrIsIntlEqualW
 @ stdcall StrPBrkA(str str) shlwapi.StrPBrkA
-@ stdcall StrPBrkW(wstr wstr) shlwapi.StrPBrkW
+@ stdcall StrPBrkW(wstr wstr)
 @ stdcall StrRChrA(str str long) shlwapi.StrRChrA
 @ stdcall StrRChrIA(str str long) shlwapi.StrRChrIA
-@ stdcall StrRChrIW(wstr wstr long) shlwapi.StrRChrIW
-@ stdcall StrRChrW(wstr wstr long) shlwapi.StrRChrW
+@ stdcall StrRChrIW(wstr wstr long)
+@ stdcall StrRChrW(wstr wstr long)
 @ stdcall StrRStrIA(str str str) shlwapi.StrRStrIA
 @ stdcall StrRStrIW(wstr wstr wstr) shlwapi.StrRStrIW
 @ stdcall StrSpnA(str str) shlwapi.StrSpnA
-@ stdcall StrSpnW(wstr wstr) shlwapi.StrSpnW
+@ stdcall StrSpnW(wstr wstr)
 @ stdcall StrStrA(str str) shlwapi.StrStrA
 @ stdcall StrStrIA(str str) shlwapi.StrStrIA
-@ stdcall StrStrIW(wstr wstr) shlwapi.StrStrIW
-@ stdcall StrStrNIW(wstr wstr long) shlwapi.StrStrNIW
-@ stdcall StrStrNW(wstr wstr long) shlwapi.StrStrNW
-@ stdcall StrStrW(wstr wstr) shlwapi.StrStrW
+@ stdcall StrStrIW(wstr wstr)
+@ stdcall StrStrNIW(wstr wstr long)
+@ stdcall StrStrNW(wstr wstr long)
+@ stdcall StrStrW(wstr wstr)
 @ stdcall StrToInt64ExA(str long ptr) shlwapi.StrToInt64ExA
-@ stdcall StrToInt64ExW(wstr long ptr) shlwapi.StrToInt64ExW
+@ stdcall StrToInt64ExW(wstr long ptr)
 @ stdcall StrToIntA(str) shlwapi.StrToIntA
 @ stdcall StrToIntExA(str long ptr) shlwapi.StrToIntExA
-@ stdcall StrToIntExW(wstr long ptr) shlwapi.StrToIntExW
-@ stdcall StrToIntW(wstr) shlwapi.StrToIntW
+@ stdcall StrToIntExW(wstr long ptr)
+@ stdcall StrToIntW(wstr)
 @ stdcall StrTrimA(str str) shlwapi.StrTrimA
-@ stdcall StrTrimW(wstr wstr) shlwapi.StrTrimW
+@ stdcall StrTrimW(wstr wstr)
 @ stdcall SubmitThreadpoolWork(ptr) kernel32.SubmitThreadpoolWork
 # @ stub SubscribeEdpEnabledStateChange
 # @ stub SubscribeStateChangeNotification
diff --git a/dlls/kernelbase/string.c b/dlls/kernelbase/string.c
new file mode 100644
index 00000000000..4991ba3fd1f
--- /dev/null
+++ b/dlls/kernelbase/string.c
@@ -0,0 +1,519 @@
+/*
+ * Copyright 2019 Nikolay Sivov for CodeWeavers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include <stdarg.h>
+
+#include "windef.h"
+#include "winbase.h"
+#include "winnls.h"
+#include "shlwapi.h"
+
+#include "wine/debug.h"
+#include "wine/unicode.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(string);
+
+DWORD WINAPI StrCmpCA(const char *str, const char *cmp)
+{
+    return lstrcmpA(str, cmp);
+}
+
+DWORD WINAPI StrCmpCW(const WCHAR *str, const WCHAR *cmp)
+{
+    return lstrcmpW(str, cmp);
+}
+
+DWORD WINAPI StrCmpICA(const char *str, const char *cmp)
+{
+    return lstrcmpiA(str, cmp);
+}
+
+DWORD WINAPI StrCmpICW(const WCHAR *str, const WCHAR *cmp)
+{
+    return lstrcmpiW(str, cmp);
+}
+
+DWORD WINAPI StrCmpNICA(const char *str, const char *cmp, DWORD len)
+{
+    return StrCmpNIA(str, cmp, len);
+}
+
+DWORD WINAPI StrCmpNICW(const WCHAR *str, const WCHAR *cmp, DWORD len)
+{
+    return StrCmpNIW(str, cmp, len);
+}
+
+BOOL WINAPI IsCharBlankW(WCHAR wc)
+{
+    WORD type;
+
+    return GetStringTypeW(CT_CTYPE1, &wc, 1, &type) && (type & C1_BLANK);
+}
+
+BOOL WINAPI IsCharCntrlW(WCHAR wc)
+{
+    WORD type;
+
+    return GetStringTypeW(CT_CTYPE1, &wc, 1, &type) && (type & C1_CNTRL);
+}
+
+BOOL WINAPI IsCharDigitW(WCHAR wc)
+{
+    WORD type;
+
+    return GetStringTypeW(CT_CTYPE1, &wc, 1, &type) && (type & C1_DIGIT);
+}
+
+BOOL WINAPI IsCharPunctW(WCHAR wc)
+{
+    WORD type;
+
+    return GetStringTypeW(CT_CTYPE1, &wc, 1, &type) && (type & C1_PUNCT);
+}
+
+BOOL WINAPI IsCharSpaceA(CHAR c)
+{
+    WORD type;
+    return GetStringTypeA(GetSystemDefaultLCID(), CT_CTYPE1, &c, 1, &type) && (type & C1_SPACE);
+}
+
+BOOL WINAPI IsCharSpaceW(WCHAR wc)
+{
+    WORD type;
+
+    return GetStringTypeW(CT_CTYPE1, &wc, 1, &type) && (type & C1_SPACE);
+}
+
+BOOL WINAPI IsCharXDigitW(WCHAR wc)
+{
+    WORD type;
+
+    return GetStringTypeW(CT_CTYPE1, &wc, 1, &type) && (type & C1_XDIGIT);
+}
+
+WCHAR * WINAPI StrChrW(const WCHAR *str, WCHAR ch)
+{
+    TRACE("%s, %#x\n", wine_dbgstr_w(str), ch);
+
+    if (!str)
+        return NULL;
+
+    return strchrW(str, ch);
+}
+
+WCHAR * WINAPI StrChrIW(const WCHAR *str, WCHAR ch)
+{
+    TRACE("%s, %#x\n", wine_dbgstr_w(str), ch);
+
+    if (!str)
+        return NULL;
+
+    ch = toupperW(ch);
+    while (*str)
+    {
+        if (toupperW(*str) == ch)
+            return (WCHAR *)str;
+        str++;
+    }
+    str = NULL;
+
+    return (WCHAR *)str;
+}
+
+WCHAR * WINAPI StrChrNW(const WCHAR *str, WCHAR ch, UINT max_len)
+{
+    TRACE("%s, %#x, %u\n", wine_dbgstr_wn(str, max_len), ch, max_len);
+
+    if (!str)
+        return NULL;
+
+    while (*str && max_len-- > 0)
+    {
+        if (*str == ch)
+            return (WCHAR *)str;
+        str++;
+    }
+
+    return NULL;
+}
+
+char * WINAPI StrDupA(const char *str)
+{
+    unsigned int len;
+    char *ret;
+
+    TRACE("%s\n", wine_dbgstr_a(str));
+
+    len = str ? strlen(str) + 1 : 1;
+    ret = LocalAlloc(LMEM_FIXED, len);
+
+    if (ret)
+    {
+        if (str)
+            memcpy(ret, str, len);
+        else
+            *ret = '\0';
+    }
+
+    return ret;
+}
+
+WCHAR * WINAPI StrDupW(const WCHAR *str)
+{
+    unsigned int len;
+    WCHAR *ret;
+
+    TRACE("%s\n", wine_dbgstr_w(str));
+
+    len = (str ? strlenW(str) + 1 : 1) * sizeof(WCHAR);
+    ret = LocalAlloc(LMEM_FIXED, len);
+
+    if (ret)
+    {
+        if (str)
+            memcpy(ret, str, len);
+        else
+            *ret = '\0';
+    }
+
+    return ret;
+}
+
+BOOL WINAPI ChrCmpIW(WCHAR ch1, WCHAR ch2)
+{
+    return CompareStringW(GetThreadLocale(), NORM_IGNORECASE, &ch1, 1, &ch2, 1) - CSTR_EQUAL;
+}
+
+WCHAR * WINAPI StrStrW(const WCHAR *str, const WCHAR *search)
+{
+    TRACE("%s, %s\n", wine_dbgstr_w(str), wine_dbgstr_w(search));
+
+    if (!str || !search || !*search)
+        return NULL;
+
+    return strstrW(str, search);
+}
+
+WCHAR * WINAPI StrStrNW(const WCHAR *str, const WCHAR *search, UINT max_len)
+{
+    unsigned int i, len;
+
+    TRACE("%s, %s, %u\n", wine_dbgstr_w(str), wine_dbgstr_w(search), max_len);
+
+    if (!str || !search || !*search || !max_len)
+        return NULL;
+
+    len = strlenW(search);
+
+    for (i = max_len; *str && (i > 0); i--, str++)
+    {
+        if (!strncmpW(str, search, len))
+            return (WCHAR *)str;
+    }
+
+    return NULL;
+}
+
+int WINAPI StrCmpNIA(const char *str, const char *cmp, int len)
+{
+    TRACE("%s, %s, %i\n", wine_dbgstr_a(str), wine_dbgstr_a(cmp), len);
+    return CompareStringA(GetThreadLocale(), NORM_IGNORECASE, str, len, cmp, len) - CSTR_EQUAL;
+}
+
+WCHAR * WINAPI StrStrNIW(const WCHAR *str, const WCHAR *search, UINT max_len)
+{
+    unsigned int i, len;
+
+    TRACE("%s, %s, %u\n", wine_dbgstr_w(str), wine_dbgstr_w(search), max_len);
+
+    if (!str || !search || !*search || !max_len)
+        return NULL;
+
+    len = strlenW(search);
+
+    for (i = max_len; *str && (i > 0); i--, str++)
+    {
+        if (!strncmpiW(str, search, len))
+            return (WCHAR *)str;
+    }
+
+    return NULL;
+}
+
+int WINAPI StrCmpNW(const WCHAR *str, const WCHAR *comp, int len)
+{
+    TRACE("%s, %s, %i\n", wine_dbgstr_w(str), wine_dbgstr_w(comp), len);
+    return CompareStringW(GetThreadLocale(), 0, str, len, comp, len) - CSTR_EQUAL;
+}
+
+int WINAPI StrCmpNIW(const WCHAR *str, const WCHAR *comp, int len)
+{
+    TRACE("%s, %s, %i\n", wine_dbgstr_w(str), wine_dbgstr_w(comp), len);
+    return CompareStringW(GetThreadLocale(), NORM_IGNORECASE, str, len, comp, len) - CSTR_EQUAL;
+}
+
+int WINAPI StrCmpW(const WCHAR *str, const WCHAR *comp)
+{
+    TRACE("%s, %s\n", wine_dbgstr_w(str), wine_dbgstr_w(comp));
+    return CompareStringW(GetThreadLocale(), 0, str, -1, comp, -1) - CSTR_EQUAL;
+}
+
+int WINAPI StrCmpIW(const WCHAR *str, const WCHAR *comp)
+{
+    TRACE("%s, %s\n", wine_dbgstr_w(str), wine_dbgstr_w(comp));
+    return CompareStringW(GetThreadLocale(), NORM_IGNORECASE, str, -1, comp, -1) - CSTR_EQUAL;
+}
+
+WCHAR * WINAPI StrCpyNW(WCHAR *dst, const WCHAR *src, int count)
+{
+    const WCHAR *s = src;
+    WCHAR *d = dst;
+
+    TRACE("%p, %s, %i\n", dst, wine_dbgstr_w(src), count);
+
+    if (s)
+    {
+        while ((count > 1) && *s)
+        {
+            count--;
+            *d++ = *s++;
+        }
+    }
+    if (count) *d = 0;
+
+    return dst;
+}
+
+WCHAR * WINAPI StrStrIW(const WCHAR *str, const WCHAR *search)
+{
+    unsigned int len;
+    const WCHAR *end;
+
+    TRACE("%s, %s\n", wine_dbgstr_w(str), wine_dbgstr_w(search));
+
+    if (!str || !search || !*search)
+        return NULL;
+
+    len = strlenW(search);
+    end = str + strlenW(str);
+
+    while (str + len <= end)
+    {
+        if (!StrCmpNIW(str, search, len))
+            return (WCHAR *)str;
+        str++;
+    }
+
+    return NULL;
+}
+
+int WINAPI StrSpnW(const WCHAR *str, const WCHAR *match)
+{
+    if (!str || !match) return 0;
+    return strspnW(str, match);
+}
+
+WCHAR * WINAPI StrRChrW(const WCHAR *str, const WCHAR *end, WORD ch)
+{
+    WCHAR *ret = NULL;
+
+    if (!str) return NULL;
+    if (!end) end = str + strlenW(str);
+    while (str < end)
+    {
+        if (*str == ch) ret = (WCHAR *)str;
+        str++;
+    }
+    return ret;
+}
+
+WCHAR * WINAPI StrRChrIW(const WCHAR *str, const WCHAR *end, WORD ch)
+{
+    WCHAR *ret = NULL;
+
+    if (!str) return NULL;
+    if (!end) end = str + strlenW(str);
+    while (str < end)
+    {
+        if (!ChrCmpIW(*str, ch)) ret = (WCHAR *)str;
+        str++;
+    }
+    return ret;
+}
+
+WCHAR * WINAPI StrPBrkW(const WCHAR *str, const WCHAR *match)
+{
+    if (!str || !match) return NULL;
+    return strpbrkW(str, match);
+}
+
+BOOL WINAPI StrTrimW(WCHAR *str, const WCHAR *trim)
+{
+    unsigned int len;
+    WCHAR *ptr = str;
+    BOOL ret = FALSE;
+
+    TRACE("%s, %s\n", wine_dbgstr_w(str), wine_dbgstr_w(trim));
+
+    if (!str || !*str)
+        return FALSE;
+
+    while (*ptr && StrChrW(trim, *ptr))
+        ptr++;
+
+    len = strlenW(ptr);
+
+    if (ptr != str)
+    {
+        memmove(str, ptr, (len + 1) * sizeof(WCHAR));
+        ret = TRUE;
+    }
+
+    if (len > 0)
+    {
+        ptr = str + len;
+        while (StrChrW(trim, ptr[-1]))
+            ptr--; /* Skip trailing matches */
+
+        if (ptr != str + len)
+        {
+            *ptr = '\0';
+            ret = TRUE;
+        }
+    }
+
+    return ret;
+}
+
+BOOL WINAPI StrToInt64ExW(const WCHAR *str, DWORD flags, LONGLONG *ret)
+{
+    BOOL negative = FALSE;
+    LONGLONG value = 0;
+
+    TRACE("%s, %#x, %p\n", wine_dbgstr_w(str), flags, ret);
+
+    if (!str || !ret)
+        return FALSE;
+
+    if (flags > STIF_SUPPORT_HEX)
+        WARN("Unknown flags %#x.\n", flags);
+
+    /* Skip leading space, '+', '-' */
+    while (isspaceW(*str))
+        str++;
+
+    if (*str == '-')
+    {
+        negative = TRUE;
+        str++;
+    }
+    else if (*str == '+')
+        str++;
+
+    if (flags & STIF_SUPPORT_HEX && *str == '0' && tolowerW(str[1]) == 'x')
+    {
+        /* Read hex number */
+        str += 2;
+
+        if (!isxdigitW(*str))
+            return FALSE;
+
+        while (isxdigitW(*str))
+        {
+            value *= 16;
+            if (isdigitW(*str))
+                value += (*str - '0');
+            else
+                value += 10 + (tolowerW(*str) - 'a');
+            str++;
+        }
+
+        *ret = value;
+        return TRUE;
+    }
+
+    /* Read decimal number */
+    if (!isdigitW(*str))
+        return FALSE;
+
+    while (isdigitW(*str))
+    {
+        value *= 10;
+        value += (*str - '0');
+        str++;
+    }
+
+    *ret = negative ? -value : value;
+    return TRUE;
+}
+
+BOOL WINAPI StrToIntExW(const WCHAR *str, DWORD flags, INT *ret)
+{
+    LONGLONG value;
+    BOOL res;
+
+    TRACE("%s, %#x, %p\n", wine_dbgstr_w(str), flags, ret);
+
+    res = StrToInt64ExW(str, flags, &value);
+    if (res) *ret = value;
+    return res;
+}
+
+int WINAPI StrToIntW(const WCHAR *str)
+{
+    int value = 0;
+
+    TRACE("%s\n", wine_dbgstr_w(str));
+
+    if (!str)
+        return 0;
+
+    if (*str == '-' || isdigitW(*str))
+        StrToIntExW(str, 0, &value);
+    return value;
+}
+
+char * WINAPI StrCpyNXA(char *dst, const char *src, int len)
+{
+    TRACE("%p, %s, %i\n", dst, wine_dbgstr_a(src), len);
+
+    if (dst && src && len > 0)
+    {
+        while ((len-- > 1) && *src)
+            *dst++ = *src++;
+        if (len >= 0)
+            *dst = '\0';
+    }
+
+    return dst;
+}
+
+WCHAR * WINAPI StrCpyNXW(WCHAR *dst, const WCHAR *src, int len)
+{
+    TRACE("%p, %s, %i\n", dst, wine_dbgstr_w(src), len);
+
+    if (dst && src && len > 0)
+    {
+        while ((len-- > 1) && *src)
+            *dst++ = *src++;
+        if (len >= 0)
+            *dst = '\0';
+    }
+
+    return dst;
+}