JavaScriptCore-903.tar.gz

[apple/javascriptcore.git] / wtf / StringExtras.h

diff --git a/wtf/StringExtras.h b/wtf/StringExtras.h
index 1c23390d55617b1fa8da7d6870b52c673f8d43e6..371e33bf98ad055c2e233a50ec1fc1c524c7d92c 100644 (file)
--- a/wtf/StringExtras.h
+++ b/wtf/StringExtras.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006 Apple Inc. All rights reserved.
+ * Copyright (C) 2006, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -28,12 +28,14 @@
 
 #include <stdarg.h>
 #include <stdio.h>
+#include <string.h>
 
 #if HAVE(STRINGS_H) 
 #include <strings.h> 
 #endif 
 
 #if COMPILER(MSVC)
+// FIXME: why a COMPILER check instead of OS? also, these should be HAVE checks
 
 inline int snprintf(char* buffer, size_t count, const char* format, ...) 
 {
@@ -42,19 +44,32 @@ inline int snprintf(char* buffer, size_t count, const char* format, ...)
     va_start(args, format);
     result = _vsnprintf(buffer, count, format, args);
     va_end(args);
+
+    // In the case where the string entirely filled the buffer, _vsnprintf will not
+    // null-terminate it, but snprintf must.
+    if (count > 0)
+        buffer[count - 1] = '\0';
+
     return result;
 }
 
-#if COMPILER(MSVC7) || PLATFORM(WINCE)
-
-inline int vsnprintf(char* buffer, size_t count, const char* format, va_list args)
+inline double wtf_vsnprintf(char* buffer, size_t count, const char* format, va_list args)
 {
-    return _vsnprintf(buffer, count, format, args);
+    int result = _vsnprintf(buffer, count, format, args);
+
+    // In the case where the string entirely filled the buffer, _vsnprintf will not
+    // null-terminate it, but vsnprintf must.
+    if (count > 0)
+        buffer[count - 1] = '\0';
+
+    return result;
 }
 
-#endif
+// Work around a difference in Microsoft's implementation of vsnprintf, where 
+// vsnprintf does not null terminate the buffer. WebKit can rely on the null termination.
+#define vsnprintf(buffer, count, format, args) wtf_vsnprintf(buffer, count, format, args)
 
-#if PLATFORM(WINCE)
+#if OS(WINCE)
 
 inline int strnicmp(const char* string1, const char* string2, size_t count)
 {
@@ -75,14 +90,37 @@ inline char* strdup(const char* strSource)
 
 inline int strncasecmp(const char* s1, const char* s2, size_t len)
 {
-    return strnicmp(s1, s2, len);
+    return _strnicmp(s1, s2, len);
 }
 
 inline int strcasecmp(const char* s1, const char* s2)
 {
-    return stricmp(s1, s2);
+    return _stricmp(s1, s2);
 }
 
 #endif
 
+#if !HAVE(STRNSTR)
+
+inline char* strnstr(const char* buffer, const char* target, size_t bufferLength)
+{
+    size_t targetLength = strlen(target);
+    if (targetLength == 0)
+        return const_cast<char*>(buffer);
+    for (const char* start = buffer; *start && start + targetLength <= buffer + bufferLength; start++) {
+        if (*start == *target && strncmp(start + 1, target + 1, targetLength - 1) == 0)
+            return const_cast<char*>(start);
+    }
+    return 0;
+}
+
+#endif
+
+#if COMPILER(RVCT) && __ARMCC_VERSION < 400000
+
+int strcasecmp(const char* s1, const char* s2);
+int strncasecmp(const char* s1, const char* s2, size_t len);
+
+#endif
+
 #endif // WTF_StringExtras_h