[PATCH v3 3/9] stash: introduce is_stash_ref and assert_stash_ref functions.

From: Jon Seymour <jon.seymour@gmail.com>
Date: Aug 8, 2010, 04:46 UTC
Message-ID: <1281242771-24764-4-git-send-email-jon.seymour@gmail.com>
In-Reply-To: <1281242771-24764-1-git-send-email-jon.seymour@gmail.com>

Introduce a function, is_stash_ref, which checks whether an argument is valid stash reference (e.g. is of the form ['refs/']stash['@{'something'}])

Introduce a function, assert_stash_ref, which can be used to ensure that certain commands are only called with stash references as arguments.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
---
 git-stash.sh |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/git-stash.sh b/git-stash.sh
index dbb7944..41a9359 100755
--- a/git-stash.sh
+++ b/git-stash.sh
@@ -223,6 +223,15 @@ show_stash () {
 	git diff $flags $b_commit $w_commit
 }
 
+is_stash_ref() {
+	revs="$(git rev-parse --revs-only --symbolic --verify --default ${ref_stash} "$@")" &&
+	test "$ref_stash" = "$(git rev-parse --symbolic-full-name "${revs%@*}")"
+}
+
+assert_stash_ref() {
+	is_stash_ref "$@" || die "$* is not a stash reference"
+}
+
 #
 # if this function returns, then:
 #   s is set to the stash commit

-- 
1.7.2.1.51.g82c0c0