thodg/libgit2/src/diff_xdiff.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/diff_xdiff.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_diff_xdiff_h__
  #define INCLUDE_diff_xdiff_h__
  
  #include "common.h"
  
  #include "diff.h"
  #include "xdiff/xdiff.h"
  #include "patch_generate.h"
  
  /* xdiff cannot cope with large files.  these files should not be passed to
   * xdiff.  callers should treat these large files as binary.
   */
  #define GIT_XDIFF_MAX_SIZE (1024LL * 1024 * 1023)
  
  /* A git_xdiff_output is a git_patch_generate_output with extra fields
   * necessary to use libxdiff.  Calling git_xdiff_init() will set the diff_cb
   * field of the output to use xdiff to generate the diffs.
   */
  typedef struct {
  	git_patch_generated_output output;
  
  	xdemitconf_t config;
  	xpparam_t    params;
  	xdemitcb_t   callback;
  } git_xdiff_output;
  
  void git_xdiff_init(git_xdiff_output *xo, const git_diff_options *opts);
  
  #endif
  

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