thodg/libgit2/include/git2/reflog.h

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• Hash : 2508cc66
  Author :
  Date : 2012-11-18T21:38:08
  

  Rename ref and reflog apis for consistency

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• include/git2/reflog.h

• /*
   * Copyright (C) 2009-2012 the libgit2 contributors
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #ifndef INCLUDE_git_reflog_h__
  #define INCLUDE_git_reflog_h__
  
  #include "common.h"
  #include "types.h"
  #include "oid.h"
  
  /**
   * @file git2/reflog.h
   * @brief Git reflog management routines
   * @defgroup git_reflog Git reflog management routines
   * @ingroup Git
   * @{
   */
  GIT_BEGIN_DECL
  
  /**
   * Read the reflog for the given reference
   *
   * If there is no reflog file for the given
   * reference yet, an empty reflog object will
   * be returned.
   *
   * The reflog must be freed manually by using
   * git_reflog_free().
   *
   * @param out pointer to reflog
   * @param ref reference to read the reflog for
   * @return 0 or an error code
   */
  GIT_EXTERN(int) git_reflog_read(git_reflog **out, const git_reference *ref);
  
  /**
   * Write an existing in-memory reflog object back to disk
   * using an atomic file lock.
   *
   * @param reflog an existing reflog object
   * @return 0 or an error code
   */
  GIT_EXTERN(int) git_reflog_write(git_reflog *reflog);
  
  /**
   * Add a new entry to the reflog.
   *
   * `msg` is optional and can be NULL.
   *
   * @param reflog an existing reflog object
   * @param id the OID the reference is now pointing to
   * @param committer the signature of the committer
   * @param msg the reflog message
   * @return 0 or an error code
   */
  GIT_EXTERN(int) git_reflog_append(git_reflog *reflog, const git_oid *id, const git_signature *committer, const char *msg);
  
  /**
   * Rename the reflog for the given reference
   *
   * The reflog to be renamed is expected to already exist
   *
   * @param ref the reference
   * @param name the new name of the reference
   * @return 0 or an error code
   */
  GIT_EXTERN(int) git_reflog_rename(git_reference *ref, const char *name);
  
  /**
   * Delete the reflog for the given reference
   *
   * @param ref the reference
   * @return 0 or an error code
   */
  GIT_EXTERN(int) git_reflog_delete(git_reference *ref);
  
  /**
   * Get the number of log entries in a reflog
   *
   * @param reflog the previously loaded reflog
   * @return the number of log entries
   */
  GIT_EXTERN(size_t) git_reflog_entrycount(git_reflog *reflog);
  
  /**
   * Lookup an entry by its index
   *
   * Requesting the reflog entry with an index of 0 (zero) will
   * return the most recently created entry.
   *
   * @param reflog a previously loaded reflog
   * @param idx the position of the entry to lookup. Should be greater than or
   * equal to 0 (zero) and less than `git_reflog_entrycount()`.
   * @return the entry; NULL if not found
   */
  GIT_EXTERN(const git_reflog_entry *) git_reflog_entry_byindex(git_reflog *reflog, size_t idx);
  
  /**
   * Remove an entry from the reflog by its index
   *
   * To ensure there's no gap in the log history, set `rewrite_previous_entry`
   * param value to 1. When deleting entry `n`, member old_oid of entry `n-1`
   * (if any) will be updated with the value of member new_oid of entry `n+1`.
   *
   * @param reflog a previously loaded reflog.
   *
   * @param idx the position of the entry to remove. Should be greater than or
   * equal to 0 (zero) and less than `git_reflog_entrycount()`.
   *
   * @param rewrite_previous_entry 1 to rewrite the history; 0 otherwise.
   *
   * @return 0 on success, GIT_ENOTFOUND if the entry doesn't exist
   * or an error code.
   */
  GIT_EXTERN(int) git_reflog_drop(
  	git_reflog *reflog,
  	size_t idx,
  	int rewrite_previous_entry);
  
  /**
   * Get the old oid
   *
   * @param entry a reflog entry
   * @return the old oid
   */
  GIT_EXTERN(const git_oid *) git_reflog_entry_id_old(const git_reflog_entry *entry);
  
  /**
   * Get the new oid
   *
   * @param entry a reflog entry
   * @return the new oid at this time
   */
  GIT_EXTERN(const git_oid *) git_reflog_entry_id_new(const git_reflog_entry *entry);
  
  /**
   * Get the committer of this entry
   *
   * @param entry a reflog entry
   * @return the committer
   */
  GIT_EXTERN(const git_signature *) git_reflog_entry_committer(const git_reflog_entry *entry);
  
  /**
   * Get the log message
   *
   * @param entry a reflog entry
   * @return the log msg
   */
  GIT_EXTERN(const char *) git_reflog_entry_message(const git_reflog_entry *entry);
  
  /**
   * Free the reflog
   *
   * @param reflog reflog to free
   */
  GIT_EXTERN(void) git_reflog_free(git_reflog *reflog);
  
  /** @} */
  GIT_END_DECL
  #endif
  

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