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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 // Copied from strings/stringpiece.h with modifications | 4 // Copied from strings/stringpiece.h with modifications |
5 // | 5 // |
6 // A string-like object that points to a sized piece of memory. | 6 // A string-like object that points to a sized piece of memory. |
7 // | 7 // |
8 // Functions or methods may use const StringPiece& parameters to accept either | 8 // Functions or methods may use const StringPiece& parameters to accept either |
9 // a "const char*" or a "string" value that will be implicitly converted to | 9 // a "const char*" or a "string" value that will be implicitly converted to |
10 // a StringPiece. The implicit conversion means that it is often appropriate | 10 // a StringPiece. The implicit conversion means that it is often appropriate |
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48 | 48 |
49 // data() may return a pointer to a buffer with embedded NULs, and the | 49 // data() may return a pointer to a buffer with embedded NULs, and the |
50 // returned buffer may or may not be null terminated. Therefore it is | 50 // returned buffer may or may not be null terminated. Therefore it is |
51 // typically a mistake to pass data() to a routine that expects a NUL | 51 // typically a mistake to pass data() to a routine that expects a NUL |
52 // terminated string. | 52 // terminated string. |
53 const char* data() const { return ptr_; } | 53 const char* data() const { return ptr_; } |
54 size_type size() const { return length_; } | 54 size_type size() const { return length_; } |
55 size_type length() const { return length_; } | 55 size_type length() const { return length_; } |
56 bool empty() const { return length_ == 0; } | 56 bool empty() const { return length_ == 0; } |
57 | 57 |
58 void clear() { | 58 void clear() { ptr_ = NULL; length_ = 0; } |
59 ptr_ = NULL; | 59 void set(const char* data, size_type len) { ptr_ = data; length_ = len; } |
60 length_ = 0; | |
61 } | |
62 void set(const char* data, size_type len) { | |
63 ptr_ = data; | |
64 length_ = len; | |
65 } | |
66 void set(const char* str) { | 60 void set(const char* str) { |
67 ptr_ = str; | 61 ptr_ = str; |
68 length_ = str ? strlen(str) : 0; | 62 length_ = str ? strlen(str) : 0; |
69 } | 63 } |
70 void set(const void* data, size_type len) { | 64 void set(const void* data, size_type len) { |
71 ptr_ = reinterpret_cast<const char*>(data); | 65 ptr_ = reinterpret_cast<const char*>(data); |
72 length_ = len; | 66 length_ = len; |
73 } | 67 } |
74 | 68 |
75 char operator[](size_type i) const { return ptr_[i]; } | 69 char operator[](size_type i) const { return ptr_[i]; } |
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185 inline bool operator>=(const StringPiece& x, const StringPiece& y) { | 179 inline bool operator>=(const StringPiece& x, const StringPiece& y) { |
186 return !(x < y); | 180 return !(x < y); |
187 } | 181 } |
188 | 182 |
189 // allow StringPiece to be logged (needed for unit testing). | 183 // allow StringPiece to be logged (needed for unit testing). |
190 extern std::ostream& operator<<(std::ostream& o, const StringPiece& piece); | 184 extern std::ostream& operator<<(std::ostream& o, const StringPiece& piece); |
191 | 185 |
192 } // namespace base | 186 } // namespace base |
193 | 187 |
194 #endif // BASE_STRING_PIECE_H_ | 188 #endif // BASE_STRING_PIECE_H_ |
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