extern/fmt/ostream.cc

   1 /*
   2  Formatting library for C++ - std::ostream support
   3
   4  Copyright (c) 2012 - 2016, Victor Zverovich
   5  All rights reserved.
   6
   7  For the license information refer to format.h.
   8  */
   9
  10 #include "fmt/ostream.h"
  11
  12 namespace fmt {
  13
  14 namespace internal {
  15 FMT_FUNC void write(std::ostream &os, Writer &w) {
  16   const char *data = w.data();
  17   typedef internal::MakeUnsigned<std::streamsize>::Type UnsignedStreamSize;
  18   UnsignedStreamSize size = w.size();
  19   UnsignedStreamSize max_size =
  20       internal::to_unsigned((std::numeric_limits<std::streamsize>::max)());
  21   do {
  22     UnsignedStreamSize n = size <= max_size ? size : max_size;
  23     os.write(data, static_cast<std::streamsize>(n));
  24     data += n;
  25     size -= n;
  26   } while (size != 0);
  27 }
  28 }
  29
  30 FMT_FUNC void print(std::ostream &os, CStringRef format_str, ArgList args) {
  31   MemoryWriter w;
  32   w.write(format_str, args);
  33   internal::write(os, w);
  34 }
  35 }  // namespace fmt