Package org.tmatesoft.svn.core.io.diff

Class SVNDeltaProcessor

java.lang.Object
org.tmatesoft.svn.core.io.diff.SVNDeltaProcessor
public class SVNDeltaProcessor extends Object
The SVNDeltaProcessor is used to get a full text of a file in series applying diff windows being passed to a processor.
Since:
1.2
Version:
1.3
Author:
TMate Software Ltd.

  • Constructor Details

    • SVNDeltaProcessor

      public SVNDeltaProcessor()
      Creates a processor.

  • Method Details

    • applyTextDelta

      public void applyTextDelta(InputStream base, OutputStream target, boolean computeCheksum)
      Starts processing deltas given a base file stream and an output stream to write resultant target bytes to.

      If a target full text is a newly added file (text deltas would be vs. empty), then source bytes are not needed and base may be passed as null.

      If computeChecksum is true, then an MD5 checksum will be calculated for target bytes. The calculated checksum is returned by textDeltaEnd().

      Parameters:
      base - an input stream to take base file contents from
      target - an output stream to write the resultant target contents to
      computeCheksum - true to calculate checksum

    • applyTextDelta

      public void applyTextDelta(File baseFile, File targetFile, boolean computeCheksum) throws SVNException
      Starts processing deltas given a base file and a one to write resultant target bytes to.

      If a target full text is a newly added file (text deltas would be vs. empty), then source bytes are not needed and baseFile may be passed as null.

      If a file represented by targetFile does not exist yet, first tries to create an empty file.

      If computeChecksum is true, then an MD5 checksum will be calculated for target bytes. The calculated checksum is returned by textDeltaEnd().

      Parameters:
      baseFile - a base file to read base file contents from
      targetFile - a destination file where resultant target bytes will be written
      computeCheksum - true to calculate checksum
      Throws:
      SVNException

    • applyTextDelta

      public void applyTextDelta(InputStream baseIS, File targetFile, boolean computeTargetCheksum) throws SVNException
      Starts processing deltas given a base file and a one to write resultant target bytes to.

      If a target full text is a newly added file (text deltas would be vs. empty), then source bytes are not needed and baseIS may be passed as null.

      If a file represented by targetFile does not exist yet, first tries to create an empty file.

      If computeTargetChecksum is true, then an MD5 checksum will be calculated for target bytes. The calculated checksum is returned by textDeltaEnd().

      Parameters:
      baseIS - an input stream to take base file contents from
      targetFile - a destination file where resultant target bytes will be written
      computeTargetCheksum - true to calculate checksum of the target text
      Throws:
      SVNException
      Since:
      1.3

    • textDeltaChunk

      public OutputStream textDeltaChunk(SVNDiffWindow window) throws SVNException
      Receives a next diff window to be applied. The return value is a dummy stream (left for backward compatibility) since new data should come within a diff window.
      Parameters:
      window - a diff window
      Returns:
      a dummy output stream
      Throws:
      SVNException

    • textDeltaEnd

      public String textDeltaEnd()
      Performs delta processing finalizing steps. Applies the last window left (if any) and finalizes checksum calculation (if a checksum was required).
      Returns:
      a string representing a hex form of the calculated MD5 checksum or null if checksum calculation was not required