std::string vstring (const char * format, ...) { std::string result; va_list args, args_copy; va_start(args, format); va_copy(args_copy, args); int len = vsnprintf(nullptr, 0, format, args); if (len < 0) { va_end(args_copy); va_end(args); throw std::runtime_error(...
va_start(args, format); int num = vswprintf(0, 0, format, args); va_end(args); return num; } int std_string_format(std::string & str, const char * format, ...) { std::string tmp; va_list marker; va_start(marker, format); size_t num = format_num(format, marker); if (...
typedef char * va_list; #define _INTSIZEOF(n) ( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) ) #define _crt_va_start(ap,v) ( ap = (va_list)_ADDRESSOF(v) + _INTSIZEOF(v) ) #define _crt_va_arg(ap,t) ( *(t *)((ap += _INTSIZEOF(t)) - _INTSIZEO...
{ va_list arg_list; va_start(arg_list, format); // SUSv2 version doesn't work for buf NULL/size 0, so try printing // into a small buffer that avoids the double-rendering and alloca path too... char short_buf[256]; const size_t needed = vsnprintf(short_buf, sizeof short_buf...
va_listargs; va_start(args, pszFmt); { intnLength = _vscprintf(pszFmt, args); nLength += 1;//上面返回的长度是包含\0,这里加上 std::vector<char> chars(nLength); _vsnprintf(chars.data(), nLength, pszFmt, args); str.assign(chars.data()); ...
std::string format( const char * format, ...) { char buf[1024]; va_list arglist; va_start(arglist, format); _vsnprintf(buf, 1024, format, arglist); va_end(arglist); return std::string(buf); }
_va_list', '__builtin_mul_overflow', '__builtin_operator_delete', '__builtin_operator_new', '__builtin_popcount', '__builtin_popcountl', '__builtin_popcountll', '__builtin_signbit', '__builtin_strlen', '__builtin_unreachable', '__builtin_va_end', '__builtin_va_list'...
{ va_list args; va_start(args, format); std::wstring s = vformat(format, args); va_end(args); return s; } static inline std::string format(const char *format, ...) { va_list args; va_start(args, format); std::string s = vformat(format, args); va_end(args); return s;...
va_list args; va_start(args,fmt); CString s; s.FormatV(fmt, args); va_end(args); returns; }// ToString /*** * ToString * Inputs: * UINT fmt: String ID of formatting string * ...: parameters to formatting string * Result: CString...
问C++ - vsprintf_s和std::string？EN并调用printWrapper而不是原始成员函数。注意，这里我假设Log::...