thodg/libgit2/src/config_cache.c

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• Hash : ab01cbd4
  Author :
  Date : 2013-04-22T14:24:12
  

  Add configs to repo config cache
  
  This adds a bunch of additional config values to the repository
  config value cache and makes it easier to add a simple boolean
  config without creating enum values for each possible setting.
  
  Also, this fixes a bug in git_config_refresh where the config
  cache was not being cleared which could lead to potential
  incorrect values.
  
  The work to start using the new cached configs will come in the
  next couple of commits...
  

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• src/config_cache.c

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * 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 "fileops.h"
  #include "config.h"
  #include "git2/config.h"
  #include "vector.h"
  #include "filter.h"
  #include "repository.h"
  
  struct map_data {
  	const char *cvar_name;
  	git_cvar_map *maps;
  	size_t map_count;
  	int default_value;
  };
  
  /*
   *	core.eol
   *		Sets the line ending type to use in the working directory for
   *	files that have the text property set. Alternatives are lf, crlf
   *	and native, which uses the platform's native line ending. The default
   *	value is native. See gitattributes(5) for more information on
   *	end-of-line conversion.
   */
  static git_cvar_map _cvar_map_eol[] = {
  	{GIT_CVAR_FALSE, NULL, GIT_EOL_UNSET},
  	{GIT_CVAR_STRING, "lf", GIT_EOL_LF},
  	{GIT_CVAR_STRING, "crlf", GIT_EOL_CRLF},
  	{GIT_CVAR_STRING, "native", GIT_EOL_NATIVE}
  };
  
  /*
   *	core.autocrlf
   *		Setting this variable to "true" is almost the same as setting
   *	the text attribute to "auto" on all files except that text files are
   *	not guaranteed to be normalized: files that contain CRLF in the
   *	repository will not be touched. Use this setting if you want to have
   *	CRLF line endings in your working directory even though the repository
   *	does not have normalized line endings. This variable can be set to input,
   *	in which case no output conversion is performed.
   */
  static git_cvar_map _cvar_map_autocrlf[] = {
  	{GIT_CVAR_FALSE, NULL, GIT_AUTO_CRLF_FALSE},
  	{GIT_CVAR_TRUE, NULL, GIT_AUTO_CRLF_TRUE},
  	{GIT_CVAR_STRING, "input", GIT_AUTO_CRLF_INPUT}
  };
  
  /*
   * Generic map for integer values
   */
  static git_cvar_map _cvar_map_int[] = {
  	{GIT_CVAR_INT32, NULL, 0},
  };
  
  static struct map_data _cvar_maps[] = {
  	{"core.autocrlf", _cvar_map_autocrlf, ARRAY_SIZE(_cvar_map_autocrlf), GIT_AUTO_CRLF_DEFAULT},
  	{"core.eol", _cvar_map_eol, ARRAY_SIZE(_cvar_map_eol), GIT_EOL_DEFAULT},
  	{"core.symlinks", NULL, 0, GIT_SYMLINKS_DEFAULT },
  	{"core.ignorecase", NULL, 0, GIT_IGNORECASE_DEFAULT },
  	{"core.filemode", NULL, 0, GIT_FILEMODE_DEFAULT },
  	{"core.ignorestat", NULL, 0, GIT_IGNORESTAT_DEFAULT },
  	{"core.trustctime", NULL, 0, GIT_TRUSTCTIME_DEFAULT },
  	{"core.abbrev", _cvar_map_int, 1, GIT_ABBREV_DEFAULT },
  };
  
  int git_repository__cvar(int *out, git_repository *repo, git_cvar_cached cvar)
  {
  	*out = repo->cvar_cache[(int)cvar];
  
  	if (*out == GIT_CVAR_NOT_CACHED) {
  		struct map_data *data = &_cvar_maps[(int)cvar];
  		git_config *config;
  		int error;
  
  		error = git_repository_config__weakptr(&config, repo);
  		if (error < 0)
  			return error;
  
  		if (data->maps)
  			error = git_config_get_mapped(
  				out, config, data->cvar_name, data->maps, data->map_count);
  		else
  			error = git_config_get_bool(out, config, data->cvar_name);
  
  		if (error == GIT_ENOTFOUND) {
  			giterr_clear();
  			*out = data->default_value;
  		}
  		else if (error < 0)
  			return error;
  
  		repo->cvar_cache[(int)cvar] = *out;
  	}
  
  	return 0;
  }
  
  void git_repository__cvar_cache_clear(git_repository *repo)
  {
  	int i;
  
  	for (i = 0; i < GIT_CVAR_CACHE_MAX; ++i)
  		repo->cvar_cache[i] = GIT_CVAR_NOT_CACHED;
  }
  
  

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