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 * modification, are permitted provided that the following conditions are
 * met:
 *
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 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// This file contains the declaration of class StringReader.

#ifndef O3D_UTILS_CROSS_STRING_READER_H_
#define O3D_UTILS_CROSS_STRING_READER_H_

#include <string>

#include "utils/cross/text_reader.h"

namespace o3d {

// A StringReader reads a sequence of characters from an
// in-memory string.
class StringReader : public TextReader {
 public:
  // Prepare to read from the given input string.
  explicit StringReader(const std::string& input);
  virtual ~StringReader();

  virtual bool IsAtEnd() const;
  virtual std::string PeekString(std::string::size_type count) const;
  virtual char ReadChar();
  virtual std::string ReadString(std::string::size_type count);
  virtual std::string ReadLine();
  virtual std::string ReadToEnd();

  // Access to the original input buffer, and the current position in
  // that buffer.
  const std::string& input() const { return input_; }
  std::string::size_type position() const { return position_; }

 private:
  std::string input_;
  std::string::size_type position_;
  DISALLOW_COPY_AND_ASSIGN(StringReader);
};
}  // namespace o3d

#endif  // O3D_UTILS_CROSS_STRING_READER_H_