Templatize CFX_{Byte,Wide}StringC

core/fxcrt/include/fx_system.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_FXCRT_INCLUDE_FX_SYSTEM_H_
 #define CORE_FXCRT_INCLUDE_FX_SYSTEM_H_
 
 #include <assert.h>
@@ skipping 140 matching lines @@
 #endif  // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 
 #ifdef __cplusplus
 }  // extern "C"
 
 #include "third_party/base/numerics/safe_conversions.h"
 
 #define FXSYS_strlen(ptr) pdfium::base::checked_cast<FX_STRSIZE>(strlen(ptr))
 #define FXSYS_wcslen(ptr) pdfium::base::checked_cast<FX_STRSIZE>(wcslen(ptr))
 
+// Overloaded functions for C++ templates
+inline FX_STRSIZE FXSYS_len(const FX_CHAR* ptr) {
+  return FXSYS_strlen(ptr);
+}
+
+inline FX_STRSIZE FXSYS_len(const FX_WCHAR* ptr) {
+  return FXSYS_wcslen(ptr);
+}
+
+inline int FXSYS_cmp(const FX_CHAR* ptr1, const FX_CHAR* ptr2, size_t len) {
+  return memcmp(ptr1, ptr2, len);
+}
+
+inline int FXSYS_cmp(const FX_WCHAR* ptr1, const FX_WCHAR* ptr2, size_t len) {
+  return wmemcmp(ptr1, ptr2, len);
+}
+
+inline const FX_CHAR* FXSYS_chr(const FX_CHAR* ptr, FX_CHAR ch, size_t len) {
+  return reinterpret_cast<const FX_CHAR*>(memchr(ptr, ch, len));
+}
+
+inline const FX_WCHAR* FXSYS_chr(const FX_WCHAR* ptr, FX_WCHAR ch, size_t len) {
+  return wmemchr(ptr, ch, len);
+}
+
 extern "C" {
 #else
 #define FXSYS_strlen(ptr) ((FX_STRSIZE)strlen(ptr))
 #define FXSYS_wcslen(ptr) ((FX_STRSIZE)wcslen(ptr))
 #endif
 
 #define FXSYS_wcscmp wcscmp
 #define FXSYS_wcsstr wcsstr
 #define FXSYS_wcsncmp wcsncmp
 #define FXSYS_vswprintf vswprintf
@@ skipping 130 matching lines @@
 
 // Prevent a function from ever being inlined, typically because we'd
 // like it to appear in stack traces.
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 #define NEVER_INLINE __declspec(noinline)
 #else  // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 #define NEVER_INLINE __attribute__((__noinline__))
 #endif  // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 
 #endif  // CORE_FXCRT_INCLUDE_FX_SYSTEM_H_