Exemplos de SmallVectorImpl::capacity_in_bytes em C++ (Cpp)

Exemplo n.º 1

Arquivo: PlatformPosix.cpp Projeto: ThomasStevensonQM/root

bool Popen(const std::string& Cmd, llvm::SmallVectorImpl<char>& Buf, bool RdE) {
  if (FILE *PF = ::popen(RdE ? (Cmd + " 2>&1").c_str() : Cmd.c_str(), "r")) {
    Buf.resize(0);
    const size_t Chunk = Buf.capacity_in_bytes();
    while (true) {
      const size_t Len = Buf.size();
      Buf.resize(Len + Chunk);
      const size_t R = ::fread(&Buf[Len], sizeof(char), Chunk, PF);
      if (R < Chunk) {
        Buf.resize(Len + R);
        break;
      }
    }
    ::pclose(PF);
    return !Buf.empty();
  }
  return false;
}