thodg/libgit2/src/delta-apply.h

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• Hash : c23841c8
  Author :
  Date : 2009-01-03T04:21:30
  

  Add the binary delta apply algorithm for pack style deltas
  
  The git__delta_apply() function can be used to apply a Git style
  delta, such as those used in pack files or in git patch files,
  to recover the original object stream.
  
  Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
  

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• src/delta-apply.h

• #ifndef INCLUDE_delta_apply_h__
  #define INCLUDE_delta_apply_h__
  
  /**
   * Apply a git binary delta to recover the original content.
   *
   * @param out the output buffer to receive the original data.
   *		Only out->data and out->len are populated, as this is
   *		the only information available in the delta.
   * @param base the base to copy from during copy instructions.
   * @param base_len number of bytes available at base.
   * @param delta the delta to execute copy/insert instructions from.
   * @param delta_len total number of bytes in the delta.
   * @return
   * - GIT_SUCCESS on a successful delta unpack.
   * - GIT_ERROR if the delta is corrupt or doesn't match the base.
   */
  extern int git__delta_apply(
  	git_obj *out,
  	const unsigned char *base,
  	size_t base_len,
  	const unsigned char *delta,
  	size_t delta_len);
  
  #endif
  

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