IT系/リファレンス/Gitコマンド/git_apply

git apply

ファイルやインデックスにパッチを適用するコマンド。
git diff コマンドで作成したパッチを適用する。
別のリポジトリでgit show コマンドで出力した内容をパッチとして適用することも可能。

用例

パッチを適用
```
git apply xxxx.patch
```
パッチを問題なく適用することができるのかどうかをチェック
```
git apply --check xxxx.patch
```
パッチの概要を表示
```
git apply --summary xxxx.patch
```
パッチの統計情報のみ確認
```
git apply --stat xxxx.patch
```
パッチの統計情報のみ確認（装飾なし）
```
git apply --numstat xxxx.patch
```

書式

git apply [options] <patch>

公式によると以下の通り。

git apply [--stat] [--numstat] [--summary] [--check] [--index | --intent-to-add] [--3way]
          [--apply] [--no-add] [--build-fake-ancestor=<file>] [-R | --reverse]
          [--allow-binary-replacement | --binary] [--reject] [-z]
          [-p<n>] [-C<n>] [--inaccurate-eof] [--recount] [--cached]
          [--ignore-space-change | --ignore-whitespace]
          [--whitespace=(nowarn|warn|fix|error|error-all)]
          [--exclude=<path>] [--include=<path>] [--directory=<root>]
          [--verbose] [--unsafe-paths] [<patch>…]

options

--stat	Instead of applying the patch, output diffstat for the input. Turns off "apply".
--numstat	Similar to --stat, but shows the number of added and deleted lines in decimal notation and the pathname without abbreviation, to make it more machine friendly. For binary files, outputs two - instead of saying 0 0. Turns off "apply".
--summary	Instead of applying the patch, output a condensed summary of information obtained from git diff extended headers, such as creations, renames and mode changes. Turns off "apply".
--check	Instead of applying the patch, see if the patch is applicable to the current working tree and/or the index file and detects errors. Turns off "apply".
--index	When --check is in effect, or when applying the patch (which is the default when none of the options that disables it is in effect), make sure the patch is applicable to what the current index file records. If the file to be patched in the working tree is not up to date, it is flagged as an error. This flag also causes the index file to be updated.
--intent-to-add	When applying the patch only to the working tree, mark new files to be added to the index later (see --intent-to-add option in git-add). This option is ignored unless running in a Git repository and --index is not specified. Note that --index could be implied by other options such as --cached or --3way.
--3way	When the patch does not apply cleanly, fall back on 3-way merge if the patch records the identity of blobs it is supposed to apply to, and we have those blobs available locally, possibly leaving the conflict markers in the files in the working tree for the user to resolve. This option implies the --index option, and is incompatible with the --reject and the --cached options.
--apply	If you use any of the options marked "Turns off apply" above, git apply reads and outputs the requested information without actually applying the patch. Give this flag after those flags to also apply the patch.
--no-add	When applying a patch, ignore additions made by the patch. This can be used to extract the common part between two files by first running diff on them and applying the result with this option, which would apply the deletion part but not the addition part.
--build-fake-ancestor=<file>	Newer git diff output has embedded index information for each blob to help identify the original version that the patch applies to. When this flag is given, and if the original versions of the blobs are available locally, builds a temporary index containing those blobs. When a pure mode change is encountered (which has no index information), the information is read from the current index instead.
-R \| --reverse	Apply the patch in reverse.
--allow-binary-replacement \| --binary	Historically we did not allow binary patch applied without an explicit permission from the user, and this flag was the way to do so. Currently we always allow binary patch application, so this is a no-op.
--reject	For atomicity, git apply by default fails the whole patch and does not touch the working tree when some of the hunks do not apply. This option makes it apply the parts of the patch that are applicable, and leave the rejected hunks in corresponding *.rej files.
-z	When --numstat has been given, do not munge pathnames, but use a NUL-terminated machine-readable format. Without this option, pathnames with "unusual" characters are quoted as explained for the configuration variable core.quotePath (see git-config).
-p<n>	Remove <n> leading path components (separated by slashes) from traditional diff paths. E.g., with -p2, a patch against a/dir/file will be applied directly to file. The default is 1.
-C<n>	Ensure at least <n> lines of surrounding context match before and after each change. When fewer lines of surrounding context exist they all must match. By default no context is ever ignored.
--unidiff-zero	By default, git apply expects that the patch being applied is a unified diff with at least one line of context. This provides good safety measures, but breaks down when applying a diff generated with --unified=0. To bypass these checks use --unidiff-zero. Note, for the reasons stated above usage of context-free patches is discouraged.
--inaccurate-eof	Under certain circumstances, some versions of diff do not correctly detect a missing new-line at the end of the file. As a result, patches created by such diff programs do not record incomplete lines correctly. This option adds support for applying such patches by working around this bug.
--recount	Do not trust the line counts in the hunk headers, but infer them by inspecting the patch (e.g. after editing the patch without adjusting the hunk headers appropriately).
--cached	Apply a patch without touching the working tree. Instead take the cached data, apply the patch, and store the result in the index without using the working tree. This implies --index.
--ignore-space-change \| --ignore-whitespace	When applying a patch, ignore changes in whitespace in context lines if necessary. Context lines will preserve their whitespace, and they will not undergo whitespace fixing regardless of the value of the --whitespace option. New lines will still be fixed, though.
--whitespace=(nowarn\|warn\|fix\|error\|error-all)	When applying a patch, detect a new or modified line that has whitespace errors. What are considered whitespace errors is controlled by core.whitespace configuration. By default, trailing whitespaces (including lines that solely consist of whitespaces) and a space character that is immediately followed by a tab character inside the initial indent of the line are considered whitespace errors. By default, the command outputs warning messages but applies the patch. When git-apply is used for statistics and not applying a patch, it defaults to nowarn. You can use different <action> values to control this behavior: nowarn turns off the trailing whitespace warning. warn outputs warnings for a few such errors, but applies the patch as-is (default). fix outputs warnings for a few such errors, and applies the patch after fixing them (strip is a synonym --- the tool used to consider only trailing whitespace characters as errors, and the fix involved stripping them, but modern Gits do more). error outputs warnings for a few such errors, and refuses to apply the patch. error-all is similar to error but shows all errors.
--exclude=<path>	Don’t apply changes to files matching the given path pattern. This can be useful when importing patchsets, where you want to exclude certain files or directories.
--include=<path>	Apply changes to files matching the given path pattern. This can be useful when importing patchsets, where you want to include certain files or directories. When --exclude and --include patterns are used, they are examined in the order they appear on the command line, and the first match determines if a patch to each path is used. A patch to a path that does not match any include/exclude pattern is used by default if there is no include pattern on the command line, and ignored if there is any include pattern.
--directory=<root>	Prepend <root> to all filenames. If a "-p" argument was also passed, it is applied before prepending the new root. For example, a patch that talks about updating a/git-gui.sh to b/git-gui.sh can be applied to the file in the working tree modules/git-gui/git-gui.sh by running git apply --directory=modules/git-gui.
--verbose	Report progress to stderr. By default, only a message about the current patch being applied will be printed. This option will cause additional information to be reported.
--unsafe-paths	By default, a patch that affects outside the working area (either a Git controlled working tree, or the current working directory when "git apply" is used as a replacement of GNU patch) is rejected as a mistake (or a mischief). When git apply is used as a "better GNU patch", the user can pass the --unsafe-paths option to override this safety check. This option has no effect when --index or --cached is in use.
<patch>…	The files to read the patch from. - can be used to read from the standard input.