// 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 #endif // Also support old flag NO_LOCALE_SUPPORT #ifdef NO_LOCALE_SUPPORT #define JSONCPP_NO_LOCALE_SUPPORT #endif #ifndef JSONCPP_NO_LOCALE_SUPPORT #include #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(cp); } else if (cp <= 0x7FF) { result.resize(2); result[1] = static_cast(0x80 | (0x3f & cp)); result[0] = static_cast(0xC0 | (0x1f & (cp >> 6))); } else if (cp <= 0xFFFF) { result.resize(3); result[2] = static_cast(0x80 | (0x3f & cp)); result[1] = static_cast(0x80 | (0x3f & (cp >> 6))); result[0] = static_cast(0xE0 | (0xf & (cp >> 12))); } else if (cp <= 0x10FFFF) { result.resize(4); result[3] = static_cast(0x80 | (0x3f & cp)); result[2] = static_cast(0x80 | (0x3f & (cp >> 6))); result[1] = static_cast(0x80 | (0x3f & (cp >> 12))); result[0] = static_cast(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(value % 10U + static_cast('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 Iter fixNumericLocale(Iter begin, Iter end) { for (; begin != end; ++begin) { if (*begin == ',') { *begin = '.'; } } return begin; } template 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 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