зеркало из https://github.com/microsoft/git.git
443 строки
13 KiB
Plaintext
443 строки
13 KiB
Plaintext
git-rev-parse(1)
|
|
================
|
|
|
|
NAME
|
|
----
|
|
git-rev-parse - Pick out and massage parameters
|
|
|
|
|
|
SYNOPSIS
|
|
--------
|
|
[verse]
|
|
'git rev-parse' [ --option ] <args>...
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
|
|
Many Git porcelainish commands take mixture of flags
|
|
(i.e. parameters that begin with a dash '-') and parameters
|
|
meant for the underlying 'git rev-list' command they use internally
|
|
and flags and parameters for the other commands they use
|
|
downstream of 'git rev-list'. This command is used to
|
|
distinguish between them.
|
|
|
|
|
|
OPTIONS
|
|
-------
|
|
|
|
Operation Modes
|
|
~~~~~~~~~~~~~~~
|
|
|
|
Each of these options must appear first on the command line.
|
|
|
|
--parseopt::
|
|
Use 'git rev-parse' in option parsing mode (see PARSEOPT section below).
|
|
|
|
--sq-quote::
|
|
Use 'git rev-parse' in shell quoting mode (see SQ-QUOTE
|
|
section below). In contrast to the `--sq` option below, this
|
|
mode does only quoting. Nothing else is done to command input.
|
|
|
|
Options for --parseopt
|
|
~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
--keep-dashdash::
|
|
Only meaningful in `--parseopt` mode. Tells the option parser to echo
|
|
out the first `--` met instead of skipping it.
|
|
|
|
--stop-at-non-option::
|
|
Only meaningful in `--parseopt` mode. Lets the option parser stop at
|
|
the first non-option argument. This can be used to parse sub-commands
|
|
that take options themselves.
|
|
|
|
--stuck-long::
|
|
Only meaningful in `--parseopt` mode. Output the options in their
|
|
long form if available, and with their arguments stuck.
|
|
|
|
Options for Filtering
|
|
~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
--revs-only::
|
|
Do not output flags and parameters not meant for
|
|
'git rev-list' command.
|
|
|
|
--no-revs::
|
|
Do not output flags and parameters meant for
|
|
'git rev-list' command.
|
|
|
|
--flags::
|
|
Do not output non-flag parameters.
|
|
|
|
--no-flags::
|
|
Do not output flag parameters.
|
|
|
|
Options for Output
|
|
~~~~~~~~~~~~~~~~~~
|
|
|
|
--default <arg>::
|
|
If there is no parameter given by the user, use `<arg>`
|
|
instead.
|
|
|
|
--prefix <arg>::
|
|
Behave as if 'git rev-parse' was invoked from the `<arg>`
|
|
subdirectory of the working tree. Any relative filenames are
|
|
resolved as if they are prefixed by `<arg>` and will be printed
|
|
in that form.
|
|
+
|
|
This can be used to convert arguments to a command run in a subdirectory
|
|
so that they can still be used after moving to the top-level of the
|
|
repository. For example:
|
|
+
|
|
----
|
|
prefix=$(git rev-parse --show-prefix)
|
|
cd "$(git rev-parse --show-toplevel)"
|
|
eval "set -- $(git rev-parse --sq --prefix "$prefix" "$@")"
|
|
----
|
|
|
|
--verify::
|
|
Verify that exactly one parameter is provided, and that it
|
|
can be turned into a raw 20-byte SHA-1 that can be used to
|
|
access the object database. If so, emit it to the standard
|
|
output; otherwise, error out.
|
|
+
|
|
If you want to make sure that the output actually names an object in
|
|
your object database and/or can be used as a specific type of object
|
|
you require, you can add the `^{type}` peeling operator to the parameter.
|
|
For example, `git rev-parse "$VAR^{commit}"` will make sure `$VAR`
|
|
names an existing object that is a commit-ish (i.e. a commit, or an
|
|
annotated tag that points at a commit). To make sure that `$VAR`
|
|
names an existing object of any type, `git rev-parse "$VAR^{object}"`
|
|
can be used.
|
|
|
|
-q::
|
|
--quiet::
|
|
Only meaningful in `--verify` mode. Do not output an error
|
|
message if the first argument is not a valid object name;
|
|
instead exit with non-zero status silently.
|
|
SHA-1s for valid object names are printed to stdout on success.
|
|
|
|
--sq::
|
|
Usually the output is made one line per flag and
|
|
parameter. This option makes output a single line,
|
|
properly quoted for consumption by shell. Useful when
|
|
you expect your parameter to contain whitespaces and
|
|
newlines (e.g. when using pickaxe `-S` with
|
|
'git diff-{asterisk}'). In contrast to the `--sq-quote` option,
|
|
the command input is still interpreted as usual.
|
|
|
|
--not::
|
|
When showing object names, prefix them with '{caret}' and
|
|
strip '{caret}' prefix from the object names that already have
|
|
one.
|
|
|
|
--abbrev-ref[=(strict|loose)]::
|
|
A non-ambiguous short name of the objects name.
|
|
The option core.warnAmbiguousRefs is used to select the strict
|
|
abbreviation mode.
|
|
|
|
--short::
|
|
--short=number::
|
|
Instead of outputting the full SHA-1 values of object names try to
|
|
abbreviate them to a shorter unique name. When no length is specified
|
|
7 is used. The minimum length is 4.
|
|
|
|
--symbolic::
|
|
Usually the object names are output in SHA-1 form (with
|
|
possible '{caret}' prefix); this option makes them output in a
|
|
form as close to the original input as possible.
|
|
|
|
--symbolic-full-name::
|
|
This is similar to --symbolic, but it omits input that
|
|
are not refs (i.e. branch or tag names; or more
|
|
explicitly disambiguating "heads/master" form, when you
|
|
want to name the "master" branch when there is an
|
|
unfortunately named tag "master"), and show them as full
|
|
refnames (e.g. "refs/heads/master").
|
|
|
|
Options for Objects
|
|
~~~~~~~~~~~~~~~~~~~
|
|
|
|
--all::
|
|
Show all refs found in `refs/`.
|
|
|
|
--branches[=pattern]::
|
|
--tags[=pattern]::
|
|
--remotes[=pattern]::
|
|
Show all branches, tags, or remote-tracking branches,
|
|
respectively (i.e., refs found in `refs/heads`,
|
|
`refs/tags`, or `refs/remotes`, respectively).
|
|
+
|
|
If a `pattern` is given, only refs matching the given shell glob are
|
|
shown. If the pattern does not contain a globbing character (`?`,
|
|
`*`, or `[`), it is turned into a prefix match by appending `/*`.
|
|
|
|
--glob=pattern::
|
|
Show all refs matching the shell glob pattern `pattern`. If
|
|
the pattern does not start with `refs/`, this is automatically
|
|
prepended. If the pattern does not contain a globbing
|
|
character (`?`, `*`, or `[`), it is turned into a prefix
|
|
match by appending `/*`.
|
|
|
|
--exclude=<glob-pattern>::
|
|
Do not include refs matching '<glob-pattern>' that the next `--all`,
|
|
`--branches`, `--tags`, `--remotes`, or `--glob` would otherwise
|
|
consider. Repetitions of this option accumulate exclusion patterns
|
|
up to the next `--all`, `--branches`, `--tags`, `--remotes`, or
|
|
`--glob` option (other options or arguments do not clear
|
|
accumulated patterns).
|
|
+
|
|
The patterns given should not begin with `refs/heads`, `refs/tags`, or
|
|
`refs/remotes` when applied to `--branches`, `--tags`, or `--remotes`,
|
|
respectively, and they must begin with `refs/` when applied to `--glob`
|
|
or `--all`. If a trailing '/{asterisk}' is intended, it must be given
|
|
explicitly.
|
|
|
|
--disambiguate=<prefix>::
|
|
Show every object whose name begins with the given prefix.
|
|
The <prefix> must be at least 4 hexadecimal digits long to
|
|
avoid listing each and every object in the repository by
|
|
mistake.
|
|
|
|
Options for Files
|
|
~~~~~~~~~~~~~~~~~
|
|
|
|
--local-env-vars::
|
|
List the GIT_* environment variables that are local to the
|
|
repository (e.g. GIT_DIR or GIT_WORK_TREE, but not GIT_EDITOR).
|
|
Only the names of the variables are listed, not their value,
|
|
even if they are set.
|
|
|
|
--git-dir::
|
|
Show `$GIT_DIR` if defined. Otherwise show the path to
|
|
the .git directory. The path shown, when relative, is
|
|
relative to the current working directory.
|
|
+
|
|
If `$GIT_DIR` is not defined and the current directory
|
|
is not detected to lie in a Git repository or work tree
|
|
print a message to stderr and exit with nonzero status.
|
|
|
|
--git-common-dir::
|
|
Show `$GIT_COMMON_DIR` if defined, else `$GIT_DIR`.
|
|
|
|
--is-inside-git-dir::
|
|
When the current working directory is below the repository
|
|
directory print "true", otherwise "false".
|
|
|
|
--is-inside-work-tree::
|
|
When the current working directory is inside the work tree of the
|
|
repository print "true", otherwise "false".
|
|
|
|
--is-bare-repository::
|
|
When the repository is bare print "true", otherwise "false".
|
|
|
|
--resolve-git-dir <path>::
|
|
Check if <path> is a valid repository or a gitfile that
|
|
points at a valid repository, and print the location of the
|
|
repository. If <path> is a gitfile then the resolved path
|
|
to the real repository is printed.
|
|
|
|
--git-path <path>::
|
|
Resolve "$GIT_DIR/<path>" and takes other path relocation
|
|
variables such as $GIT_OBJECT_DIRECTORY,
|
|
$GIT_INDEX_FILE... into account. For example, if
|
|
$GIT_OBJECT_DIRECTORY is set to /foo/bar then "git rev-parse
|
|
--git-path objects/abc" returns /foo/bar/abc.
|
|
|
|
--show-cdup::
|
|
When the command is invoked from a subdirectory, show the
|
|
path of the top-level directory relative to the current
|
|
directory (typically a sequence of "../", or an empty string).
|
|
|
|
--show-prefix::
|
|
When the command is invoked from a subdirectory, show the
|
|
path of the current directory relative to the top-level
|
|
directory.
|
|
|
|
--show-toplevel::
|
|
Show the absolute path of the top-level directory.
|
|
|
|
--shared-index-path::
|
|
Show the path to the shared index file in split index mode, or
|
|
empty if not in split-index mode.
|
|
|
|
Other Options
|
|
~~~~~~~~~~~~~
|
|
|
|
--since=datestring::
|
|
--after=datestring::
|
|
Parse the date string, and output the corresponding
|
|
--max-age= parameter for 'git rev-list'.
|
|
|
|
--until=datestring::
|
|
--before=datestring::
|
|
Parse the date string, and output the corresponding
|
|
--min-age= parameter for 'git rev-list'.
|
|
|
|
<args>...::
|
|
Flags and parameters to be parsed.
|
|
|
|
|
|
include::revisions.txt[]
|
|
|
|
PARSEOPT
|
|
--------
|
|
|
|
In `--parseopt` mode, 'git rev-parse' helps massaging options to bring to shell
|
|
scripts the same facilities C builtins have. It works as an option normalizer
|
|
(e.g. splits single switches aggregate values), a bit like `getopt(1)` does.
|
|
|
|
It takes on the standard input the specification of the options to parse and
|
|
understand, and echoes on the standard output a string suitable for `sh(1)` `eval`
|
|
to replace the arguments with normalized ones. In case of error, it outputs
|
|
usage on the standard error stream, and exits with code 129.
|
|
|
|
Note: Make sure you quote the result when passing it to `eval`. See
|
|
below for an example.
|
|
|
|
Input Format
|
|
~~~~~~~~~~~~
|
|
|
|
'git rev-parse --parseopt' input format is fully text based. It has two parts,
|
|
separated by a line that contains only `--`. The lines before the separator
|
|
(should be one or more) are used for the usage.
|
|
The lines after the separator describe the options.
|
|
|
|
Each line of options has this format:
|
|
|
|
------------
|
|
<opt-spec><flags>*<arg-hint>? SP+ help LF
|
|
------------
|
|
|
|
`<opt-spec>`::
|
|
its format is the short option character, then the long option name
|
|
separated by a comma. Both parts are not required, though at least one
|
|
is necessary. May not contain any of the `<flags>` characters.
|
|
`h,help`, `dry-run` and `f` are examples of correct `<opt-spec>`.
|
|
|
|
`<flags>`::
|
|
`<flags>` are of `*`, `=`, `?` or `!`.
|
|
* Use `=` if the option takes an argument.
|
|
|
|
* Use `?` to mean that the option takes an optional argument. You
|
|
probably want to use the `--stuck-long` mode to be able to
|
|
unambiguously parse the optional argument.
|
|
|
|
* Use `*` to mean that this option should not be listed in the usage
|
|
generated for the `-h` argument. It's shown for `--help-all` as
|
|
documented in linkgit:gitcli[7].
|
|
|
|
* Use `!` to not make the corresponding negated long option available.
|
|
|
|
`<arg-hint>`::
|
|
`<arg-hint>`, if specified, is used as a name of the argument in the
|
|
help output, for options that take arguments. `<arg-hint>` is
|
|
terminated by the first whitespace. It is customary to use a
|
|
dash to separate words in a multi-word argument hint.
|
|
|
|
The remainder of the line, after stripping the spaces, is used
|
|
as the help associated to the option.
|
|
|
|
Blank lines are ignored, and lines that don't match this specification are used
|
|
as option group headers (start the line with a space to create such
|
|
lines on purpose).
|
|
|
|
Example
|
|
~~~~~~~
|
|
|
|
------------
|
|
OPTS_SPEC="\
|
|
some-command [options] <args>...
|
|
|
|
some-command does foo and bar!
|
|
--
|
|
h,help show the help
|
|
|
|
foo some nifty option --foo
|
|
bar= some cool option --bar with an argument
|
|
baz=arg another cool option --baz with a named argument
|
|
qux?path qux may take a path argument but has meaning by itself
|
|
|
|
An option group Header
|
|
C? option C with an optional argument"
|
|
|
|
eval "$(echo "$OPTS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?)"
|
|
------------
|
|
|
|
|
|
Usage text
|
|
~~~~~~~~~~
|
|
|
|
When `"$@"` is `-h` or `--help` in the above example, the following
|
|
usage text would be shown:
|
|
|
|
------------
|
|
usage: some-command [options] <args>...
|
|
|
|
some-command does foo and bar!
|
|
|
|
-h, --help show the help
|
|
--foo some nifty option --foo
|
|
--bar ... some cool option --bar with an argument
|
|
--baz <arg> another cool option --baz with a named argument
|
|
--qux[=<path>] qux may take a path argument but has meaning by itself
|
|
|
|
An option group Header
|
|
-C[...] option C with an optional argument
|
|
------------
|
|
|
|
SQ-QUOTE
|
|
--------
|
|
|
|
In `--sq-quote` mode, 'git rev-parse' echoes on the standard output a
|
|
single line suitable for `sh(1)` `eval`. This line is made by
|
|
normalizing the arguments following `--sq-quote`. Nothing other than
|
|
quoting the arguments is done.
|
|
|
|
If you want command input to still be interpreted as usual by
|
|
'git rev-parse' before the output is shell quoted, see the `--sq`
|
|
option.
|
|
|
|
Example
|
|
~~~~~~~
|
|
|
|
------------
|
|
$ cat >your-git-script.sh <<\EOF
|
|
#!/bin/sh
|
|
args=$(git rev-parse --sq-quote "$@") # quote user-supplied arguments
|
|
command="git frotz -n24 $args" # and use it inside a handcrafted
|
|
# command line
|
|
eval "$command"
|
|
EOF
|
|
|
|
$ sh your-git-script.sh "a b'c"
|
|
------------
|
|
|
|
EXAMPLES
|
|
--------
|
|
|
|
* Print the object name of the current commit:
|
|
+
|
|
------------
|
|
$ git rev-parse --verify HEAD
|
|
------------
|
|
|
|
* Print the commit object name from the revision in the $REV shell variable:
|
|
+
|
|
------------
|
|
$ git rev-parse --verify $REV^{commit}
|
|
------------
|
|
+
|
|
This will error out if $REV is empty or not a valid revision.
|
|
|
|
* Similar to above:
|
|
+
|
|
------------
|
|
$ git rev-parse --default master --verify $REV
|
|
------------
|
|
+
|
|
but if $REV is empty, the commit object name from master will be printed.
|
|
|
|
GIT
|
|
---
|
|
Part of the linkgit:git[1] suite
|