Package nonapi.io.github.classgraph.fileslice.reader

Interface RandomAccessReader

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      int read​(long srcOffset, byte[] dstArr, int dstArrStart, int numBytes)
      Read bytes into a byte array.
      int read​(long srcOffset, java.nio.ByteBuffer dstBuf, int dstBufStart, int numBytes)
      Read bytes into a ByteBuffer.
      byte readByte​(long offset)
      Read a byte at a specific offset (without changing the current cursor offset).
      int readInt​(long offset)
      Read a int at a specific offset (without changing the current cursor offset).
      long readLong​(long offset)
      Read a long at a specific offset (without changing the current cursor offset).
      short readShort​(long offset)
      Read a short at a specific offset (without changing the current cursor offset).
      java.lang.String readString​(long offset, int numBytes)
      Reads the "modified UTF8" format defined in the Java classfile spec.
      java.lang.String readString​(long offset, int numBytes, boolean replaceSlashWithDot, boolean stripLSemicolon)
      Reads the "modified UTF8" format defined in the Java classfile spec, optionally replacing '/' with '.', and optionally removing the prefix "L" and the suffix ";".
      int readUnsignedByte​(long offset)
      Read an unsigned byte at a specific offset (without changing the current cursor offset).
      long readUnsignedInt​(long offset)
      Read a unsigned int at a specific offset (without changing the current cursor offset).
      int readUnsignedShort​(long offset)
      Read a unsigned short at a specific offset (without changing the current cursor offset).

    • Method Detail

      • read

        int read​(long srcOffset,
         java.nio.ByteBuffer dstBuf,
         int dstBufStart,
         int numBytes)
  throws java.io.IOException
        Read bytes into a ByteBuffer.
        Parameters:
        srcOffset - The offset to start reading from.
        dstBuf - The ByteBuffer to write into.
        dstBufStart - The offset within the destination buffer to start writing at.
        numBytes - The number of bytes to read.
        Returns:
        The number of bytes actually read, or -1 if no more bytes could be read.
        Throws:
        java.io.IOException - If there was an exception while reading.

      • read

        int read​(long srcOffset,
         byte[] dstArr,
         int dstArrStart,
         int numBytes)
  throws java.io.IOException
        Read bytes into a byte array.
        Parameters:
        srcOffset - The offset to start reading from.
        dstArr - The byte array to write into.
        dstArrStart - The offset within the destination array to start writing at.
        numBytes - The number of bytes to read.
        Returns:
        The number of bytes actually read, or -1 if no more bytes could be read.
        Throws:
        java.io.IOException - If there was an exception while reading.

      • readByte

        byte readByte​(long offset)
       throws java.io.IOException
        Read a byte at a specific offset (without changing the current cursor offset).
        Parameters:
        offset - The buffer offset to read from.
        Returns:
        The byte at the offset.
        Throws:
        java.io.IOException - If there was an exception while reading.

      • readUnsignedByte

        int readUnsignedByte​(long offset)
              throws java.io.IOException
        Read an unsigned byte at a specific offset (without changing the current cursor offset).
        Parameters:
        offset - The buffer offset to read from.
        Returns:
        The unsigned byte at the offset.
        Throws:
        java.io.IOException - If there was an exception while reading.

      • readShort

        short readShort​(long offset)
         throws java.io.IOException
        Read a short at a specific offset (without changing the current cursor offset).
        Parameters:
        offset - The buffer offset to read from.
        Returns:
        The short at the offset.
        Throws:
        java.io.IOException - If there was an exception while reading.

      • readUnsignedShort

        int readUnsignedShort​(long offset)
               throws java.io.IOException
        Read a unsigned short at a specific offset (without changing the current cursor offset).
        Parameters:
        offset - The buffer offset to read from.
        Returns:
        The unsigned short at the offset.
        Throws:
        java.io.IOException - If there was an exception while reading.

      • readInt

        int readInt​(long offset)
     throws java.io.IOException
        Read a int at a specific offset (without changing the current cursor offset).
        Parameters:
        offset - The buffer offset to read from.
        Returns:
        The int at the offset.
        Throws:
        java.io.IOException - If there was an exception while reading.

      • readUnsignedInt

        long readUnsignedInt​(long offset)
              throws java.io.IOException
        Read a unsigned int at a specific offset (without changing the current cursor offset).
        Parameters:
        offset - The buffer offset to read from.
        Returns:
        The int at the offset, as a long.
        Throws:
        java.io.IOException - If there was an exception while reading.

      • readLong

        long readLong​(long offset)
       throws java.io.IOException
        Read a long at a specific offset (without changing the current cursor offset).
        Parameters:
        offset - The buffer offset to read from.
        Returns:
        The long at the offset.
        Throws:
        java.io.IOException - If there was an exception while reading.

      • readString

        java.lang.String readString​(long offset,
                            int numBytes,
                            boolean replaceSlashWithDot,
                            boolean stripLSemicolon)
                     throws java.io.IOException
        Reads the "modified UTF8" format defined in the Java classfile spec, optionally replacing '/' with '.', and optionally removing the prefix "L" and the suffix ";".
        Parameters:
        offset - The start offset of the string.
        numBytes - The number of bytes of the UTF8 encoding of the string.
        replaceSlashWithDot - If true, replace '/' with '.'.
        stripLSemicolon - If true, string final ';' character.
        Returns:
        The string.
        Throws:
        java.io.IOException - If an I/O exception occurs.

      • readString

        java.lang.String readString​(long offset,
                            int numBytes)
                     throws java.io.IOException
        Reads the "modified UTF8" format defined in the Java classfile spec.
        Parameters:
        offset - The start offset of the string.
        numBytes - The number of bytes of the UTF8 encoding of the string.
        Returns:
        The string.
        Throws:
        java.io.IOException - If an I/O exception occurs.