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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 // | 4 // |
| 5 // This file defines utility functions for working with strings. | 5 // This file defines utility functions for working with strings. |
| 6 | 6 |
| 7 #ifndef BASE_STRINGS_STRING_UTIL_H_ | 7 #ifndef BASE_STRINGS_STRING_UTIL_H_ |
| 8 #define BASE_STRINGS_STRING_UTIL_H_ | 8 #define BASE_STRINGS_STRING_UTIL_H_ |
| 9 | 9 |
| 10 #include <ctype.h> | 10 #include <ctype.h> |
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| 242 // Note that IsStringUTF8 checks not only if the input is structurally | 242 // Note that IsStringUTF8 checks not only if the input is structurally |
| 243 // valid but also if it doesn't contain any non-character codepoint | 243 // valid but also if it doesn't contain any non-character codepoint |
| 244 // (e.g. U+FFFE). It's done on purpose because all the existing callers want | 244 // (e.g. U+FFFE). It's done on purpose because all the existing callers want |
| 245 // to have the maximum 'discriminating' power from other encodings. If | 245 // to have the maximum 'discriminating' power from other encodings. If |
| 246 // there's a use case for just checking the structural validity, we have to | 246 // there's a use case for just checking the structural validity, we have to |
| 247 // add a new function for that. | 247 // add a new function for that. |
| 248 BASE_EXPORT bool IsStringUTF8(const std::string& str); | 248 BASE_EXPORT bool IsStringUTF8(const std::string& str); |
| 249 BASE_EXPORT bool IsStringASCII(const StringPiece& str); | 249 BASE_EXPORT bool IsStringASCII(const StringPiece& str); |
| 250 BASE_EXPORT bool IsStringASCII(const string16& str); | 250 BASE_EXPORT bool IsStringASCII(const string16& str); |
| 251 | 251 |
| 252 } // namespace base | |
| 253 | |
| 254 #if defined(OS_WIN) | |
| 255 #include "base/strings/string_util_win.h" | |
| 256 #elif defined(OS_POSIX) | |
| 257 #include "base/strings/string_util_posix.h" | |
| 258 #else | |
| 259 #error Define string operations appropriately for your platform | |
| 260 #endif | |
| 261 | |
| 262 // Converts the elements of the given string. This version uses a pointer to | 252 // Converts the elements of the given string. This version uses a pointer to |
| 263 // clearly differentiate it from the non-pointer variant. | 253 // clearly differentiate it from the non-pointer variant. |
| 264 template <class str> inline void StringToLowerASCII(str* s) { | 254 template <class str> inline void StringToLowerASCII(str* s) { |
| 265 for (typename str::iterator i = s->begin(); i != s->end(); ++i) | 255 for (typename str::iterator i = s->begin(); i != s->end(); ++i) |
| 266 *i = base::ToLowerASCII(*i); | 256 *i = ToLowerASCII(*i); |
| 267 } | 257 } |
| 268 | 258 |
| 269 template <class str> inline str StringToLowerASCII(const str& s) { | 259 template <class str> inline str StringToLowerASCII(const str& s) { |
| 270 // for std::string and std::wstring | 260 // for std::string and std::wstring |
| 271 str output(s); | 261 str output(s); |
| 272 StringToLowerASCII(&output); | 262 StringToLowerASCII(&output); |
| 273 return output; | 263 return output; |
| 274 } | 264 } |
| 275 | 265 |
| 266 } // namespace base |
| 267 |
| 268 #if defined(OS_WIN) |
| 269 #include "base/strings/string_util_win.h" |
| 270 #elif defined(OS_POSIX) |
| 271 #include "base/strings/string_util_posix.h" |
| 272 #else |
| 273 #error Define string operations appropriately for your platform |
| 274 #endif |
| 275 |
| 276 // Converts the elements of the given string. This version uses a pointer to | 276 // Converts the elements of the given string. This version uses a pointer to |
| 277 // clearly differentiate it from the non-pointer variant. | 277 // clearly differentiate it from the non-pointer variant. |
| 278 template <class str> inline void StringToUpperASCII(str* s) { | 278 template <class str> inline void StringToUpperASCII(str* s) { |
| 279 for (typename str::iterator i = s->begin(); i != s->end(); ++i) | 279 for (typename str::iterator i = s->begin(); i != s->end(); ++i) |
| 280 *i = base::ToUpperASCII(*i); | 280 *i = base::ToUpperASCII(*i); |
| 281 } | 281 } |
| 282 | 282 |
| 283 template <class str> inline str StringToUpperASCII(const str& s) { | 283 template <class str> inline str StringToUpperASCII(const str& s) { |
| 284 // for std::string and std::wstring | 284 // for std::string and std::wstring |
| 285 str output(s); | 285 str output(s); |
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| 514 #elif defined(WCHAR_T_IS_UTF32) | 514 #elif defined(WCHAR_T_IS_UTF32) |
| 515 typedef uint32 Unsigned; | 515 typedef uint32 Unsigned; |
| 516 #endif | 516 #endif |
| 517 }; | 517 }; |
| 518 template<> | 518 template<> |
| 519 struct ToUnsigned<short> { | 519 struct ToUnsigned<short> { |
| 520 typedef unsigned short Unsigned; | 520 typedef unsigned short Unsigned; |
| 521 }; | 521 }; |
| 522 | 522 |
| 523 #endif // BASE_STRINGS_STRING_UTIL_H_ | 523 #endif // BASE_STRINGS_STRING_UTIL_H_ |
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