thodg/libgit2/src/config_cache.c

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• Hash : 0c7f49dd
  Author :
  Date : 2017-06-30T13:39:01
  

  Make sure to always include "common.h" first
  
  Next to including several files, our "common.h" header also declares
  various macros which are then used throughout the project. As such, we
  have to make sure to always include this file first in all
  implementation files. Otherwise, we might encounter problems or even
  silent behavioural differences due to macros or defines not being
  defined as they should be. So in fact, our header and implementation
  files should make sure to always include "common.h" first.
  
  This commit does so by establishing a common include pattern. Header
  files inside of "src" will now always include "common.h" as its first
  other file, separated by a newline from all the other includes to make
  it stand out as special. There are two cases for the implementation
  files. If they do have a matching header file, they will always include
  this one first, leading to "common.h" being transitively included as
  first file. If they do not have a matching header file, they instead
  include "common.h" as first file themselves.
  
  This fixes the outlined problems and will become our standard practice
  for header and source files inside of the "src/" from now on.
  

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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 "repository.h"
  #include "config.h"
  #include "git2/config.h"
  #include "vector.h"
  #include "filter.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}
  };
  
  static git_cvar_map _cvar_map_safecrlf[] = {
  	{GIT_CVAR_FALSE, NULL, GIT_SAFE_CRLF_FALSE},
  	{GIT_CVAR_TRUE, NULL, GIT_SAFE_CRLF_FAIL},
  	{GIT_CVAR_STRING, "warn", GIT_SAFE_CRLF_WARN}
  };
  
  /*
   * 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 },
  	{"core.precomposeunicode", NULL, 0, GIT_PRECOMPOSE_DEFAULT },
  	{"core.safecrlf", _cvar_map_safecrlf, ARRAY_SIZE(_cvar_map_safecrlf), GIT_SAFE_CRLF_DEFAULT},
  	{"core.logallrefupdates", NULL, 0, GIT_LOGALLREFUPDATES_DEFAULT },
  	{"core.protecthfs", NULL, 0, GIT_PROTECTHFS_DEFAULT },
  	{"core.protectntfs", NULL, 0, GIT_PROTECTNTFS_DEFAULT },
  	{"core.fsyncobjectfiles", NULL, 0, GIT_FSYNCOBJECTFILES_DEFAULT },
  };
  
  int git_config__cvar(int *out, git_config *config, git_cvar_cached cvar)
  {
  	int error = 0;
  	struct map_data *data = &_cvar_maps[(int)cvar];
  	git_config_entry *entry;
  
  	if ((error = git_config__lookup_entry(&entry, config, data->cvar_name, false)) < 0)
  		return error;
  
  	if (!entry)
  		*out = data->default_value;
  	else if (data->maps)
  		error = git_config_lookup_map_value(
  			out, data->maps, data->map_count, entry->value);
  	else
  		error = git_config_parse_bool(out, entry->value);
  
  	git_config_entry_free(entry);
  	return error;
  }
  
  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) {
  		int error;
  		git_config *config;
  
  		if ((error = git_repository_config__weakptr(&config, repo)) < 0 ||
  			(error = git_config__cvar(out, config, cvar)) < 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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