thodg/libgit2/src/sysdir.h

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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/sysdir.h

• /*
   * 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.
   */
  #ifndef INCLUDE_sysdir_h__
  #define INCLUDE_sysdir_h__
  
  #include "common.h"
  
  #include "posix.h"
  #include "buffer.h"
  
  /**
   * Find a "global" file (i.e. one in a user's home directory).
   *
   * @param path buffer to write the full path into
   * @param filename name of file to find in the home directory
   * @return 0 if found, GIT_ENOTFOUND if not found, or -1 on other OS error
   */
  extern int git_sysdir_find_global_file(git_buf *path, const char *filename);
  
  /**
   * Find an "XDG" file (i.e. one in user's XDG config path).
   *
   * @param path buffer to write the full path into
   * @param filename name of file to find in the home directory
   * @return 0 if found, GIT_ENOTFOUND if not found, or -1 on other OS error
   */
  extern int git_sysdir_find_xdg_file(git_buf *path, const char *filename);
  
  /**
   * Find a "system" file (i.e. one shared for all users of the system).
   *
   * @param path buffer to write the full path into
   * @param filename name of file to find in the home directory
   * @return 0 if found, GIT_ENOTFOUND if not found, or -1 on other OS error
   */
  extern int git_sysdir_find_system_file(git_buf *path, const char *filename);
  
  /**
   * Find a "ProgramData" file (i.e. one in %PROGRAMDATA%)
   *
   * @param path buffer to write the full path into
   * @param filename name of file to find in the ProgramData directory
   * @return 0 if found, GIT_ENOTFOUND if not found, or -1 on other OS error
   */
  extern int git_sysdir_find_programdata_file(git_buf *path, const char *filename);
  
  /**
   * Find template directory.
   *
   * @param path buffer to write the full path into
   * @return 0 if found, GIT_ENOTFOUND if not found, or -1 on other OS error
   */
  extern int git_sysdir_find_template_dir(git_buf *path);
  
  /**
   * Expand the name of a "global" file (i.e. one in a user's home
   * directory).  Unlike `find_global_file` (above), this makes no
   * attempt to check for the existence of the file, and is useful if
   * you want the full path regardless of existence.
   *
   * @param path buffer to write the full path into
   * @param filename name of file in the home directory
   * @return 0 on success or -1 on error
   */
  extern int git_sysdir_expand_global_file(git_buf *path, const char *filename);
  
  typedef enum {
  	GIT_SYSDIR_SYSTEM = 0,
  	GIT_SYSDIR_GLOBAL = 1,
  	GIT_SYSDIR_XDG    = 2,
  	GIT_SYSDIR_PROGRAMDATA = 3,
  	GIT_SYSDIR_TEMPLATE = 4,
  	GIT_SYSDIR__MAX   = 5,
  } git_sysdir_t;
  
  /**
   * Configures global data for configuration file search paths.
   *
   * @return 0 on success, <0 on failure
   */
  extern int git_sysdir_global_init(void);
  
  /**
   * Get the search path for global/system/xdg files
   *
   * @param out pointer to git_buf containing search path
   * @param which which list of paths to return
   * @return 0 on success, <0 on failure
   */
  extern int git_sysdir_get(const git_buf **out, git_sysdir_t which);
  
  /**
   * Get search path into a preallocated buffer
   *
   * @param out String buffer to write into
   * @param outlen Size of string buffer
   * @param which Which search path to return
   * @return 0 on success, GIT_EBUFS if out is too small, <0 on other failure
   */
  
  extern int git_sysdir_get_str(char *out, size_t outlen, git_sysdir_t which);
  
  /**
   * Set search paths for global/system/xdg files
   *
   * The first occurrence of the magic string "$PATH" in the new value will
   * be replaced with the old value of the search path.
   *
   * @param which Which search path to modify
   * @param paths New search path (separated by GIT_PATH_LIST_SEPARATOR)
   * @return 0 on success, <0 on failure (allocation error)
   */
  extern int git_sysdir_set(git_sysdir_t which, const char *paths);
  
  #endif /* INCLUDE_sysdir_h__ */
  

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