thodg/libgit2/src/git2/revwalk.h

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• Hash : c836c332
  Author :
  Date : 2011-02-05T09:29:37
  

  Make more methods return error codes git_revwalk_next now returns an error code when the iteration is over. git_repository_index now returns an error code when the index file could not be opened. Signed-off-by: Vicent Marti <tanoku@gmail.com>

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• src/git2/revwalk.h

• /*
   * This file is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License, version 2,
   * as published by the Free Software Foundation.
   *
   * In addition to the permissions in the GNU General Public License,
   * the authors give you unlimited permission to link the compiled
   * version of this file into combinations with other programs,
   * and to distribute those combinations without any restriction
   * coming from the use of this file.  (The General Public License
   * restrictions do apply in other respects; for example, they cover
   * modification of the file, and distribution when not linked into
   * a combined executable.)
   *
   * This file is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; see the file COPYING.  If not, write to
   * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
   * Boston, MA 02110-1301, USA.
   */
  #ifndef INCLUDE_git_revwalk_h__
  #define INCLUDE_git_revwalk_h__
  
  #include "common.h"
  #include "types.h"
  
  /**
   * @file git2/revwalk.h
   * @brief Git revision traversal routines
   * @defgroup git_revwalk Git revision traversal routines
   * @ingroup Git
   * @{
   */
  GIT_BEGIN_DECL
  
  /**
   * Sort the repository contents in no particular ordering;
   * this sorting is arbitrary, implementation-specific
   * and subject to change at any time.
   * This is the default sorting for new walkers.
   */
  #define GIT_SORT_NONE         (0)
  
  /**
   * Sort the repository contents in topological order
   * (parents before children); this sorting mode
   * can be combined with time sorting.
   */
  #define GIT_SORT_TOPOLOGICAL  (1 << 0)
  
  /**
   * Sort the repository contents by commit time;
   * this sorting mode can be combined with
   * topological sorting.
   */
  #define GIT_SORT_TIME         (1 << 1)
  
  /**
   * Iterate through the repository contents in reverse
   * order; this sorting mode can be combined with
   * any of the above.
   */
  #define GIT_SORT_REVERSE      (1 << 2)
  
  /**
   * Allocate a new revision walker to iterate through a repo.
   *
   * @param walker pointer to the new revision walker
   * @param repo the repo to walk through
   * @return 0 on success; error code otherwise
   */
  GIT_EXTERN(int) git_revwalk_new(git_revwalk **walker, git_repository *repo);
  
  /**
   * Reset the walking machinery for reuse.
   * @param walker handle to reset.
   */
  GIT_EXTERN(void) git_revwalk_reset(git_revwalk *walker);
  
  /**
   * Mark a commit to start traversal from.
   * The commit object must belong to the repo which is being walked through.
   *
   * @param walker the walker being used for the traversal.
   * @param commit the commit to start from.
   */
  GIT_EXTERN(int) git_revwalk_push(git_revwalk *walk, git_commit *commit);
  
  /**
   * Mark a commit (and its ancestors) uninteresting for the output.
   * @param walker the walker being used for the traversal.
   * @param commit the commit that will be ignored during the traversal
   */
  GIT_EXTERN(int) git_revwalk_hide(git_revwalk *walk, git_commit *commit);
  
  /**
   * Get the next commit from the revision traversal.
   *
   * @param commit Pointer where to store the next commit
   * @param walk the walker to pop the commit from.
   * @return GIT_SUCCESS if the next commit was found;
   *	GIT_EREVWALKOVER if there are no commits left to iterate
   */
  GIT_EXTERN(int) git_revwalk_next(git_commit **commit, git_revwalk *walk);
  
  /**
   * Change the sorting mode when iterating through the
   * repository's contents.
   * Changing the sorting mode resets the walker.
   * @param walk the walker being used for the traversal.
   * @param sort_mode combination of GIT_RPSORT_XXX flags
   */
  GIT_EXTERN(int) git_revwalk_sorting(git_revwalk *walk, unsigned int sort_mode);
  
  /**
   * Free a revwalk previously allocated.
   * @param walk traversal handle to close.  If NULL nothing occurs.
   */
  GIT_EXTERN(void) git_revwalk_free(git_revwalk *walk);
  
  /**
   * Return the repository on which this walker
   * is operating.
   *
   * @param walk the revision walker
   * @return the repository being walked
   */
  GIT_EXTERN(git_repository *) git_revwalk_repository(git_revwalk *walk);
  
  /** @} */
  GIT_END_DECL
  #endif
  

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