| // Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors |
| // Distributed under MIT license, or public domain if desired and |
| // recognized in your jurisdiction. |
| // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE |
| |
| #ifndef LIB_JSONCPP_JSON_TOOL_H_INCLUDED |
| #define LIB_JSONCPP_JSON_TOOL_H_INCLUDED |
| |
| #if !defined(JSON_IS_AMALGAMATION) |
| #include <json/config.h> |
| #endif |
| |
| // Also support old flag NO_LOCALE_SUPPORT |
| #ifdef NO_LOCALE_SUPPORT |
| #define JSONCPP_NO_LOCALE_SUPPORT |
| #endif |
| |
| #ifndef JSONCPP_NO_LOCALE_SUPPORT |
| #include <clocale> |
| #endif |
| |
| /* This header provides common string manipulation support, such as UTF-8, |
| * portable conversion from/to string... |
| * |
| * It is an internal header that must not be exposed. |
| */ |
| |
| namespace Json { |
| static inline char getDecimalPoint() { |
| #ifdef JSONCPP_NO_LOCALE_SUPPORT |
| return '\0'; |
| #else |
| struct lconv* lc = localeconv(); |
| return lc ? *(lc->decimal_point) : '\0'; |
| #endif |
| } |
| |
| /// Converts a unicode code-point to UTF-8. |
| static inline String codePointToUTF8(unsigned int cp) { |
| String result; |
| |
| // based on description from http://en.wikipedia.org/wiki/UTF-8 |
| |
| if (cp <= 0x7f) { |
| result.resize(1); |
| result[0] = static_cast<char>(cp); |
| } else if (cp <= 0x7FF) { |
| result.resize(2); |
| result[1] = static_cast<char>(0x80 | (0x3f & cp)); |
| result[0] = static_cast<char>(0xC0 | (0x1f & (cp >> 6))); |
| } else if (cp <= 0xFFFF) { |
| result.resize(3); |
| result[2] = static_cast<char>(0x80 | (0x3f & cp)); |
| result[1] = static_cast<char>(0x80 | (0x3f & (cp >> 6))); |
| result[0] = static_cast<char>(0xE0 | (0xf & (cp >> 12))); |
| } else if (cp <= 0x10FFFF) { |
| result.resize(4); |
| result[3] = static_cast<char>(0x80 | (0x3f & cp)); |
| result[2] = static_cast<char>(0x80 | (0x3f & (cp >> 6))); |
| result[1] = static_cast<char>(0x80 | (0x3f & (cp >> 12))); |
| result[0] = static_cast<char>(0xF0 | (0x7 & (cp >> 18))); |
| } |
| |
| return result; |
| } |
| |
| enum { |
| /// Constant that specify the size of the buffer that must be passed to |
| /// uintToString. |
| uintToStringBufferSize = 3 * sizeof(LargestUInt) + 1 |
| }; |
| |
| // Defines a char buffer for use with uintToString(). |
| using UIntToStringBuffer = char[uintToStringBufferSize]; |
| |
| /** Converts an unsigned integer to string. |
| * @param value Unsigned integer to convert to string |
| * @param current Input/Output string buffer. |
| * Must have at least uintToStringBufferSize chars free. |
| */ |
| static inline void uintToString(LargestUInt value, char*& current) { |
| *--current = 0; |
| do { |
| *--current = static_cast<char>(value % 10U + static_cast<unsigned>('0')); |
| value /= 10; |
| } while (value != 0); |
| } |
| |
| /** Change ',' to '.' everywhere in buffer. |
| * |
| * We had a sophisticated way, but it did not work in WinCE. |
| * @see https://github.com/open-source-parsers/jsoncpp/pull/9 |
| */ |
| template <typename Iter> Iter fixNumericLocale(Iter begin, Iter end) { |
| for (; begin != end; ++begin) { |
| if (*begin == ',') { |
| *begin = '.'; |
| } |
| } |
| return begin; |
| } |
| |
| template <typename Iter> void fixNumericLocaleInput(Iter begin, Iter end) { |
| char decimalPoint = getDecimalPoint(); |
| if (decimalPoint == '\0' || decimalPoint == '.') { |
| return; |
| } |
| for (; begin != end; ++begin) { |
| if (*begin == '.') { |
| *begin = decimalPoint; |
| } |
| } |
| } |
| |
| /** |
| * Return iterator that would be the new end of the range [begin,end), if we |
| * were to delete zeros in the end of string, but not the last zero before '.'. |
| */ |
| template <typename Iter> Iter fixZerosInTheEnd(Iter begin, Iter end) { |
| for (; begin != end; --end) { |
| if (*(end - 1) != '0') { |
| return end; |
| } |
| // Don't delete the last zero before the decimal point. |
| if (begin != (end - 1) && *(end - 2) == '.') { |
| return end; |
| } |
| } |
| return end; |
| } |
| |
| } // namespace Json |
| |
| #endif // LIB_JSONCPP_JSON_TOOL_H_INCLUDED |