stringex.cpp

#include "stringex.h"

#ifdef _MSC_VER
#pragma warning(disable:4996)
#define vsnprintf _vsnprintf
#endif

stringex::stringex(void) {
}

stringex::~stringex(void) {
}

std::string stringex::vformat(const char *fmt, va_list ap) {
    size_t size = 1024;
    char stackbuf[1024];
    std::vector<char> dynamicbuf;
    char *buf = &stackbuf[0];
    while (1) {
        int needed = vsnprintf(buf, size, fmt, ap);
        if (needed <= (int) size && needed >= 0) {
            return std::string(buf, (size_t) needed);
        }
        size = (needed > 0) ? (needed + 1) : (size * 2);
        dynamicbuf.resize(size);
        buf = &dynamicbuf[0];
    }
}

std::string stringex::Format(const char *fmt, ...) {
    va_list ap;
    va_start(ap, fmt);
    std::string buf = vformat(fmt, ap);
    va_end(ap);
    return buf;
}

std::string stringex::MakeUpper(string StdString) {
    const int length = (int) StdString.length();
    for (int i = 0; i < length; ++i) {
        StdString[i] = std::toupper(StdString[i]);
    }
    return StdString;
}

std::string stringex::MakeLower(string StdString) {
    const int length = (int) StdString.length();
    for (int i = 0; i < length; ++i) {
        StdString[i] = std::tolower(StdString[i]);
    }
    return StdString;
}