thodg/libgit2/src/tree.h

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• Hash : 41a82592
  Author :
  Date : 2012-05-15T14:17:39
  

  Ranged iterators and rewritten git_status_file
  
  The goal of this work is to rewrite git_status_file to use the
  same underlying code as git_status_foreach.
  
  This is done in 3 phases:
  
  1. Extend iterators to allow ranged iteration with start and
     end prefixes for the range of file names to be covered.
  2. Improve diff so that when there is a pathspec and there is
     a common non-wildcard prefix of the pathspec, it will use
     ranged iterators to minimize excess iteration.
  3. Rewrite git_status_file to call git_status_foreach_ext
     with a pathspec that covers just the one file being checked.
  
  Since ranged iterators underlie the status & diff implementation,
  this is actually fairly efficient.  The workdir iterator does
  end up loading the contents of all the directories down to the
  single file, which should ideally be avoided, but it is pretty
  good.
  

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• src/tree.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_tree_h__
  #define INCLUDE_tree_h__
  
  #include "git2/tree.h"
  #include "repository.h"
  #include "odb.h"
  #include "vector.h"
  
  struct git_tree_entry {
  	unsigned int attr;
  	char *filename;
  	git_oid oid;
  	size_t filename_len;
  	int removed;
  };
  
  struct git_tree {
  	git_object object;
  	git_vector entries;
  };
  
  struct git_treebuilder {
  	git_vector entries;
  };
  
  
  GIT_INLINE(unsigned int) entry_is_tree(const struct git_tree_entry *e)
  {
  	return (S_ISDIR(e->attr) && !S_ISGITLINK(e->attr));
  }
  
  void git_tree__free(git_tree *tree);
  int git_tree__parse(git_tree *tree, git_odb_object *obj);
  
  /**
   * Lookup the first position in the tree with a given prefix.
   *
   * @param tree a previously loaded tree.
   * @param prefix the beginning of a path to find in the tree.
   * @return index of the first item at or after the given prefix.
   */
  int git_tree_entry_prefix_position(git_tree *tree, const char *prefix);
  
  
  #endif
  

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