1 files changed, 118 insertions, 0 deletions
diff --git a/xbmc/utils/CharArrayParser.h b/xbmc/utils/CharArrayParser.h
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+/*
+ *  Copyright (C) 2005-2021 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+#include <cstdint>
+#include <string>
+
+/*!
+ *\brief Wraps a char array, providing a set of methods for parsing data from it.
+ */
+class CCharArrayParser
+{
+public:
+  CCharArrayParser() = default;
+  ~CCharArrayParser() = default;
+
+  /*!
+   * \brief Sets the position and limit to zero
+   */
+  void Reset();
+
+  /*!
+   * \brief Updates the instance to wrap the specified data and resets the position to zero
+   * \param data The data
+   * \param limit The limit of length of the data
+   */
+  void Reset(const char* data, int limit);
+
+  /*!
+   * \brief Return the number of chars yet to be read
+   */
+  int CharsLeft();
+
+  /*!
+   * \brief Returns the current offset in the array
+   */
+  int GetPosition();
+
+  /*!
+   * \brief Set the reading offset in the array
+   * \param position The new offset position
+   * \return True if success, otherwise false
+   */
+  bool SetPosition(int position);
+
+  /*!
+   * \brief Skip a specified number of chars
+   * \param nChars The number of chars
+   * \return True if success, otherwise false
+   */
+  bool SkipChars(int nChars);
+
+  /*!
+   * \brief Reads the next unsigned char (it is assumed that the caller has
+   * already checked the availability of the data for its length)
+   * \return The unsigned char value
+   */
+  uint8_t ReadNextUnsignedChar();
+
+  /*!
+   * \brief Reads the next two chars as unsigned short value (it is assumed
+   * that the caller has already checked the availability of the data for its length)
+   * \return The unsigned short value
+   */
+  uint16_t ReadNextUnsignedShort();
+
+  /*!
+   * \brief Reads the next four chars as unsigned int value (it is assumed 
+   * that the caller has already checked the availability of the data for its length)
+   * \return The unsigned int value
+   */
+  uint32_t ReadNextUnsignedInt();
+
+  /*!
+   * \brief Reads the next string of specified length (it is assumed that
+   * the caller has already checked the availability of the data for its length)
+   * \param length The length to be read
+   * \return The string value
+   */
+  std::string ReadNextString(int length);
+
+  /*!
+   * \brief Reads the next chars array of specified length (it is assumed that
+   * the caller has already checked the availability of the data for its length)
+   * \param length The length to be read
+   * \param data[OUT] The data read
+   * \return True if success, otherwise false
+   */
+  bool ReadNextArray(int length, char* data);
+
+  /*!
+   * \brief Reads a line of text.
+   * A line is considered to be terminated by any one of a carriage return ('\\r'),
+   * a line feed ('\\n'), or a carriage return followed by a line feed ('\\r\\n'),
+   * this method discards leading UTF-8 byte order marks, if present.
+   * \param line [OUT] The line read without line-termination characters
+   * \return True if read, otherwise false if the end of the data has already
+   *         been reached
+   */
+  bool ReadNextLine(std::string& line);
+
+  /*!
+   * \brief Get the current data
+   * \return The char pointer to the current data
+   */
+  const char* GetData() { return m_data; };
+
+private:
+  const char* m_data{nullptr};
+  int m_position{0};
+  int m_limit{0};
+};