thodg/libgit2/src/reset.c

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• Hash : 0ae81fc4
  Author :
  Date : 2012-10-17T15:30:22
  

  index: remove read_tree() progress indicator
  
  git_index_read_tree() was exposing a parameter to provide the user with
  a progress indicator. Unfortunately, due to the recursive nature of the
  tree walk, the maximum number of items to process was unknown. Thus,
  the indicator was only counting processed entries, without providing
  any information how the number of remaining items.
  

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• src/reset.c

• /*
   * 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.
   */
  
  #include "common.h"
  #include "commit.h"
  #include "tag.h"
  #include "git2/reset.h"
  #include "git2/checkout.h"
  
  #define ERROR_MSG "Cannot perform reset"
  
  static int reset_error_invalid(const char *msg)
  {
  	giterr_set(GITERR_INVALID, "%s - %s", ERROR_MSG, msg);
  	return -1;
  }
  
  int git_reset(
  	git_repository *repo,
  	git_object *target,
  	git_reset_type reset_type)
  {
  	git_object *commit = NULL;
  	git_index *index = NULL;
  	git_tree *tree = NULL;
  	int error = -1;
  	git_checkout_opts opts;
  	git_reference *head = NULL;
  
  	assert(repo && target);
  	assert(reset_type == GIT_RESET_SOFT
  		|| reset_type == GIT_RESET_MIXED
  		|| reset_type == GIT_RESET_HARD);
  
  	if (git_object_owner(target) != repo)
  		return reset_error_invalid("The given target does not belong to this repository.");
  
  	if (reset_type != GIT_RESET_SOFT
  		&& git_repository__ensure_not_bare(
  			repo,
  			reset_type == GIT_RESET_MIXED ? "reset mixed" : "reset hard") < 0)
  				return GIT_EBAREREPO;
  
  	if (git_object_peel(&commit, target, GIT_OBJ_COMMIT) < 0) {
  		reset_error_invalid("The given target does not resolve to a commit");
  		goto cleanup;
  	}
  
  	//TODO: Check for unmerged entries
  
  	if (git_repository_head(&head, repo) < 0)
  		goto cleanup;
  
  	if (git_reference_set_oid(head, git_object_id(commit)) < 0)
  		goto cleanup;
  
  	if (reset_type == GIT_RESET_SOFT) {
  		error = 0;
  		goto cleanup;
  	}
  
  	if (git_commit_tree(&tree, (git_commit *)commit) < 0) {
  		giterr_set(GITERR_OBJECT, "%s - Failed to retrieve the commit tree.", ERROR_MSG);
  		goto cleanup;
  	}
  
  	if (git_repository_index(&index, repo) < 0) {
  		giterr_set(GITERR_OBJECT, "%s - Failed to retrieve the index.", ERROR_MSG);
  		goto cleanup;
  	}
  
  	if (git_index_read_tree(index, tree) < 0) {
  		giterr_set(GITERR_INDEX, "%s - Failed to update the index.", ERROR_MSG);
  		goto cleanup;
  	}
  
  	if (git_index_write(index) < 0) {
  		giterr_set(GITERR_INDEX, "%s - Failed to write the index.", ERROR_MSG);
  		goto cleanup;
  	}
  
  	if (reset_type == GIT_RESET_MIXED) {
  		error = 0;
  		goto cleanup;
  	}
  
  	memset(&opts, 0, sizeof(opts));
  	opts.checkout_strategy =
  		GIT_CHECKOUT_CREATE_MISSING
  		| GIT_CHECKOUT_OVERWRITE_MODIFIED
  		| GIT_CHECKOUT_REMOVE_UNTRACKED;
  
  	if (git_checkout_index(repo, &opts) < 0) {
  		giterr_set(GITERR_INDEX, "%s - Failed to checkout the index.", ERROR_MSG);
  		goto cleanup;
  	}
  
  	error = 0;
  
  cleanup:
  	git_reference_free(head);
  	git_object_free(commit);
  	git_index_free(index);
  	git_tree_free(tree);
  
  	return error;
  }
  

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