thodg/libgit2/src/attr_file.h

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• Hash : 73b51450
  Author :
  Date : 2011-12-28T23:28:50
  

  Add support for macros and cache flush API.
  
  Add support for git attribute macro definitions.  Also, add
  support for cache flush API to clear the attribute file content
  cache when needed.
  
  Additionally, improved the handling of global and system files,
  making common utility functions in fileops and converting config
  and attr to both use the common functions.
  
  Adds a bunch more tests and fixed some memory leaks.  Note that
  adding macros required me to use refcounted attribute assignment
  definitions, which complicated, but probably improved memory usage.
  

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• src/attr_file.h

• /*
   * Copyright (C) 2009-2011 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_attr_file_h__
  #define INCLUDE_attr_file_h__
  
  #include "git2/attr.h"
  #include "vector.h"
  #include "hashtable.h"
  
  #define GIT_ATTR_FNMATCH_NEGATIVE	(1U << 0)
  #define GIT_ATTR_FNMATCH_DIRECTORY	(1U << 1)
  #define GIT_ATTR_FNMATCH_FULLPATH	(1U << 2)
  #define GIT_ATTR_FNMATCH_MACRO		(1U << 3)
  
  typedef struct {
  	char *pattern;
  	size_t length;
  	unsigned int flags;
  } git_attr_fnmatch;
  
  typedef struct {
  	git_refcount unused;
  	const char *name;
      unsigned long name_hash;
  } git_attr_name;
  
  typedef struct {
  	git_refcount rc;			/* for macros */
  	char *name;
      unsigned long name_hash;
      const char *value;
  	int is_allocated;
  } git_attr_assignment;
  
  typedef struct {
  	git_attr_fnmatch match;
  	git_vector assigns;			/* vector of <git_attr_assignment*> */
  } git_attr_rule;
  
  typedef struct {
  	char *path;					/* cache the path this was loaded from */
  	git_vector rules;			/* vector of <git_attr_rule*> */
  } git_attr_file;
  
  typedef struct {
  	const char *path;
  	const char *basename;
  	int is_dir;
  } git_attr_path;
  
  typedef struct {
  	int initialized;
  	git_hashtable *files;	  /* hash path to git_attr_file */
  	git_hashtable *macros;	  /* hash name to vector<git_attr_assignment> */
  } git_attr_cache;
  
  /*
   * git_attr_file API
   */
  
  extern int git_attr_file__from_buffer(
  	git_repository *repo, const char *buf, git_attr_file **out);
  extern int git_attr_file__from_file(
  	git_repository *repo, const char *path, git_attr_file **out);
  
  extern void git_attr_file__free(git_attr_file *file);
  
  extern int git_attr_file__lookup_one(
  	git_attr_file *file,
  	const git_attr_path *path,
  	const char *attr,
  	const char **value);
  
  /* loop over rules in file from bottom to top */
  #define git_attr_file__foreach_matching_rule(file, path, iter, rule)	\
  	git_vector_rforeach(&(file)->rules, (iter), (rule)) \
  		if (git_attr_rule__match_path((rule), (path)) == GIT_SUCCESS)
  
  extern unsigned long git_attr_file__name_hash(const char *name);
  
  
  /*
   * other utilities
   */
  
  extern void git_attr_rule__free(git_attr_rule *rule);
  
  extern int git_attr_rule__match_path(
  	git_attr_rule *rule,
  	const git_attr_path *path);
  
  extern git_attr_assignment *git_attr_rule__lookup_assignment(
  	git_attr_rule *rule, const char *name);
  
  extern int git_attr_path__init(
  	git_attr_path *info, const char *path);
  
  extern int git_attr_assignment__parse(
  	git_repository *repo, /* needed to expand macros */
  	git_vector *assigns,
  	const char **scan);
  
  extern int git_attr_cache__insert_macro(
  	git_repository *repo, git_attr_rule *macro);
  
  #endif
  

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