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mfem/general/text.hpp
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// Copyright (c) 2010-2025, Lawrence Livermore National Security, LLC. Produced
// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
// LICENSE and NOTICE for details. LLNL-CODE-806117.
//
// This file is part of the MFEM library. For more information and source code
// availability visit https://mfem.org.
//
// MFEM is free software; you can redistribute it and/or modify it under the
// terms of the BSD-3 license. We welcome feedback and contributions, see file
// CONTRIBUTING.md for details.
#ifndef MFEM_TEXT
#define MFEM_TEXT
#include "../config/config.hpp"
#include <istream>
#include <iomanip>
#include <sstream>
#include <string>
#include <limits>
#include <algorithm>
namespace mfem
{
// Utilities for text parsing
using std::to_string;
/// Check if the stream starts with @a comment_char. If so skip it.
inline void skip_comment_lines(std::istream &is, const char comment_char)
{
while (1)
{
is >> std::ws;
if (is.peek() != comment_char)
{
break;
}
is.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
}
}
/// Check for, and remove, a trailing '\\r' from and std::string.
inline void filter_dos(std::string &line)
{
if (!line.empty() && *line.rbegin() == '\r')
{
line.resize(line.size()-1);
}
}
/// Convert an integer to a 0-padded string with the given number of @a digits
inline std::string to_padded_string(int i, int digits)
{
std::ostringstream oss;
oss << std::setw(digits) << std::setfill('0') << i;
return oss.str();
}
/// Convert a string to an int
inline int to_int(const std::string& str)
{
int i;
std::stringstream(str) >> i;
return i;
}
}
#endif