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-rw-r--r--Build/source/libs/icu/icu-4.6/common/stringpiece.cpp82
1 files changed, 82 insertions, 0 deletions
diff --git a/Build/source/libs/icu/icu-4.6/common/stringpiece.cpp b/Build/source/libs/icu/icu-4.6/common/stringpiece.cpp
new file mode 100644
index 00000000000..64cd376f02c
--- /dev/null
+++ b/Build/source/libs/icu/icu-4.6/common/stringpiece.cpp
@@ -0,0 +1,82 @@
+// Copyright (C) 2009-2010, International Business Machines
+// Corporation and others. All Rights Reserved.
+//
+// Copyright 2004 and onwards Google Inc.
+//
+// Author: wilsonh@google.com (Wilson Hsieh)
+//
+
+#include "unicode/utypes.h"
+#include "unicode/stringpiece.h"
+#include "cstring.h"
+#include "cmemory.h"
+
+U_NAMESPACE_BEGIN
+
+StringPiece::StringPiece(const char* str)
+ : ptr_(str), length_((str == NULL) ? 0 : static_cast<int32_t>(uprv_strlen(str))) { }
+
+StringPiece::StringPiece(const StringPiece& x, int32_t pos) {
+ if (pos < 0) {
+ pos = 0;
+ } else if (pos > x.length_) {
+ pos = x.length_;
+ }
+ ptr_ = x.ptr_ + pos;
+ length_ = x.length_ - pos;
+}
+
+StringPiece::StringPiece(const StringPiece& x, int32_t pos, int32_t len) {
+ if (pos < 0) {
+ pos = 0;
+ } else if (pos > x.length_) {
+ pos = x.length_;
+ }
+ if (len < 0) {
+ len = 0;
+ } else if (len > x.length_ - pos) {
+ len = x.length_ - pos;
+ }
+ ptr_ = x.ptr_ + pos;
+ length_ = len;
+}
+
+void StringPiece::set(const char* str) {
+ ptr_ = str;
+ if (str != NULL)
+ length_ = static_cast<int32_t>(uprv_strlen(str));
+ else
+ length_ = 0;
+}
+
+U_EXPORT UBool U_EXPORT2
+operator==(const StringPiece& x, const StringPiece& y) {
+ int32_t len = x.size();
+ if (len != y.size()) {
+ return false;
+ }
+ if (len == 0) {
+ return true;
+ }
+ const char* p = x.data();
+ const char* p2 = y.data();
+ // Test last byte in case strings share large common prefix
+ --len;
+ if (p[len] != p2[len]) return false;
+ // At this point we can, but don't have to, ignore the last byte.
+ return uprv_memcmp(p, p2, len) == 0;
+}
+
+
+/* Microsft Visual Studios <= 8.0 complains about redefinition of this
+ * static const class variable. However, the C++ standard states that this
+ * definition is correct. Perhaps there is a bug in the Microsoft compiler.
+ * This is not an issue on any other compilers (that we know of) including
+ * Visual Studios 9.0.
+ * Cygwin with MSVC 9.0 also complains here about redefinition.
+ */
+#if (!defined(_MSC_VER) || (_MSC_VER > 1500)) && !defined(CYGWINMSVC)
+const int32_t StringPiece::npos;
+#endif
+
+U_NAMESPACE_END