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rev-parse: add --sq-quote to shell quote arguments

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Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Christian Couder 2009-04-25 06:55:26 +02:00 committed by Junio C Hamano
parent 38ef7507d1
commit 503253771e
2 changed files with 49 additions and 1 deletions
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35
Documentation/git-rev-parse.txt
View file

@ -30,6 +30,11 @@ OPTIONS
Only meaningful in `--parseopt` mode. Tells the option parser to echo
out the first `--` met instead of skipping it.
--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.
--revs-only::
Do not output flags and parameters not meant for
'git-rev-list' command.
@ -64,7 +69,8 @@ OPTIONS
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-\*').
'git-diff-\*'). 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
@ -406,6 +412,33 @@ C? option C with an optional argument"
eval `echo "$OPTS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?`
------------
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
--------

15
builtin-rev-parse.c
View file

@ -402,6 +402,18 @@ static int cmd_parseopt(int argc, const char **argv, const char *prefix)
return 0;
}
static int cmd_sq_quote(int argc, const char **argv)
{
struct strbuf buf = STRBUF_INIT;
if (argc)
sq_quote_argv(&buf, argv, 0);
printf("%s\n", buf.buf);
strbuf_release(&buf);
return 0;
}
static void die_no_single_rev(int quiet)
{
if (quiet)
@ -419,6 +431,9 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
if (argc > 1 && !strcmp("--parseopt", argv[1]))
return cmd_parseopt(argc - 1, argv + 1, prefix);
if (argc > 1 && !strcmp("--sq-quote", argv[1]))
return cmd_sq_quote(argc - 2, argv + 2);
prefix = setup_git_directory();
git_config(git_default_config, NULL);
for (i = 1; i < argc; i++) {