String.cc

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/*
 * SWC-DB© Copyright since 2019 Alex Kashirin <kashirin.alex@gmail.com>
 * License details at <https://github.com/kashirin-alex/swc-db/#license>
 */
 
 
#include "swcdb/core/Compat.h"
#include "swcdb/core/String.h"
 
#include <cstdio>
#include <cstdarg>
 
 
namespace SWC {
 
 
std::string format(const char* fmt, ...) {
  std::va_list ap1;
  va_start(ap1, fmt);
  std::string res;
 
  std::va_list ap2;
  va_copy(ap2, ap1);
 
  res.resize(std::vsnprintf(nullptr, 0, fmt, ap1));
  std::vsnprintf(res.data(), res.size() + 1, fmt, ap2);
 
  va_end(ap1);
  va_end(ap2);
  return res;
}
 
SWC_PRAGMA_DIAGNOSTIC_PUSH
SWC_PRAGMA_DIAGNOSTIC_IGNORED("-Wformat-nonliteral")
std::string format_unsafe(const char* fmt, ...) {
  std::va_list ap1;
  va_start(ap1, fmt);
  std::string res;
 
  std::va_list ap2;
  va_copy(ap2, ap1);
 
  res.resize(std::vsnprintf(nullptr, 0, fmt, ap1));
  std::vsnprintf(res.data(), res.size() + 1, fmt, ap2);
 
  va_end(ap1);
  va_end(ap2);
  return res;
}
SWC_PRAGMA_DIAGNOSTIC_POP
 
 
} // namespace SWC