Aegisub/src/text_file_reader.h

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// Copyright (c) 2012, Thomas Goyne <plorkyeran@aegisub.org>
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//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
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//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
// Aegisub Project http://www.aegisub.org/
#include <iosfwd>
#include <memory>
#include <string>
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#include <libaegisub/fs_fwd.h>
#include <libaegisub/line_iterator.h>
namespace agi { class read_file_mapping; }
/// @class TextFileReader
/// @brief A line-based text file reader
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class TextFileReader {
std::unique_ptr<agi::read_file_mapping> file;
std::unique_ptr<std::istream> stream;
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bool trim;
agi::line_iterator<std::string> iter;
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public:
/// @brief Constructor
/// @param filename File to open
/// @param enc Encoding to use, or empty to autodetect
/// @param trim Whether to trim whitespace from lines read
TextFileReader(agi::fs::path const& filename, std::string encoding, bool trim=true);
/// @brief Destructor
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~TextFileReader();
/// @brief Read a line from the file
/// @return The line, possibly trimmed
std::string ReadLineFromFile();
/// @brief Check if there are any more lines to read
bool HasMoreLines() const { return iter != agi::line_iterator<std::string>(); }
};