| // Copyright (C) 2009, 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" |
| |
| 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; |
| } |
| |
| /* 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 |