Make unit_tests pass with pt_BR.UTF-8 locale.

base/string_util.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // This file defines utility functions for working with strings.
 
 #ifndef BASE_STRING_UTIL_H_
 #define BASE_STRING_UTIL_H_
 
 #include <string>
@@ skipping 109 matching lines @@
 // These functions are threadsafe.
 const std::string& EmptyString();
 const std::wstring& EmptyWString();
 
 extern const wchar_t kWhitespaceWide[];
 extern const char kWhitespaceASCII[];
 
 // Names of codepages (charsets) understood by icu.
 extern const char* const kCodepageUTF8;
 
+// When some function takes an optional parameter to control locale
+// independence, you should use values from here to make function call
+// look more descriptive.
+enum LocaleDependence {
+  LOCALE_DEPENDENT = true,
+  LOCALE_INDEPENDENT = false
+};
+
 // Removes characters in trim_chars from the beginning and end of input.
 // NOTE: Safe to use the same variable for both input and output.
 bool TrimString(const std::wstring& input,
                 const wchar_t trim_chars[],
                 std::wstring* output);
 bool TrimString(const std::string& input,
                 const char trim_chars[],
                 std::string* output);
 
 // Trims any whitespace from either end of the input string.  Returns where
@@ skipping 207 matching lines @@
 // Specialized string-conversion functions.
 std::string IntToString(int value);
 std::wstring IntToWString(int value);
 std::string UintToString(unsigned int value);
 std::wstring UintToWString(unsigned int value);
 std::string Int64ToString(int64 value);
 std::wstring Int64ToWString(int64 value);
 std::string Uint64ToString(uint64 value);
 std::wstring Uint64ToWString(uint64 value);
 
+std::string DoubleToString(double value, LocaleDependence locale_dependent);
+std::wstring DoubleToWString(double value, LocaleDependence locale_dependent);
+
 // Perform a best-effort conversion of the input string to a numeric type,
 // setting |*output| to the result of the conversion.  Returns true for
 // "perfect" conversions; returns false in the following cases:
 //  - Overflow/underflow.  |*output| will be set to the maximum value supported
 //    by the data type.
 //  - Trailing characters in the string after parsing the number.  |*output|
 //    will be set to the value of the number that was parsed.
 //  - No characters parseable as a number at the beginning of the string.
 //    |*output| will be set to 0.
 //  - Empty string.  |*output| will be set to 0.
 bool StringToInt(const std::string& input, int* output);
 bool StringToInt(const std::wstring& input, int* output);
 bool StringToInt64(const std::string& input, int64* output);
 bool StringToInt64(const std::wstring& input, int64* output);
 bool HexStringToInt(const std::string& input, int* output);
 bool HexStringToInt(const std::wstring& input, int* output);
 
 // For floating-point conversions, only conversions of input strings in decimal
 // form are defined to work.  Behavior with strings representing floating-point
 // numbers in hexadecimal, and strings representing non-fininte values (such
 // as NaN and inf) is undefined.  Otherwise, these behave the same as the
 // integral variants above.
+//
+// By default, locale-dependent variant is used.
 bool StringToDouble(const std::string& input, double* output);
+bool StringToDouble(const std::string& input, double* output,
+                    LocaleDependence locale_dependent);
 bool StringToDouble(const std::wstring& input, double* output);
+bool StringToDouble(const std::wstring& input, double* output,
+                    LocaleDependence locale_dependent);
 
 // Convenience forms of the above, when the caller is uninterested in the
 // boolean return value.  These return only the |*output| value from the
 // above conversions: a best-effort conversion when possible, otherwise, 0.
 int StringToInt(const std::string& value);
 int StringToInt(const std::wstring& value);
 int64 StringToInt64(const std::string& value);
 int64 StringToInt64(const std::wstring& value);
 int HexStringToInt(const std::string& value);
 int HexStringToInt(const std::wstring& value);
+// By default, locale-dependent variant is used.
 double StringToDouble(const std::string& value);
+double StringToDouble(const std::string& value,
+                      LocaleDependence locale_dependent);
 double StringToDouble(const std::wstring& value);
+double StringToDouble(const std::wstring& value,
+                      LocaleDependence locale_dependent);
 
 // Return a C++ string given printf-like input.
 std::string StringPrintf(const char* format, ...);
 std::wstring StringPrintf(const wchar_t* format, ...);
 
 // Store result into a supplied string and return it
 const std::string& SStringPrintf(std::string* dst, const char* format, ...);
 const std::wstring& SStringPrintf(std::wstring* dst,
                                   const wchar_t* format, ...);
 
@@ skipping 118 matching lines @@
 // Returns true if the string passed in matches the pattern. The pattern
 // string can contain wildcards like * and ?
 // TODO(iyengar) This function may not work correctly for CJK strings as
 // it does individual character matches.
 // The backslash character (\) is an escape character for * and ?
 bool MatchPattern(const std::wstring& string, const std::wstring& pattern);
 bool MatchPattern(const std::string& string, const std::string& pattern);
 
 #endif  // BASE_STRING_UTIL_H_