contrib: add credential helper for OS X Keychain

diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index d56426dd396190a07de7d661cd22fb284b759ca8..1fba6c2de0b78ddb5aa1495c9c519c26b48eebc2 100644 (file)
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -39,9 +39,15 @@ git_broken_path_fix () {
 
 # @@BROKEN_PATH_FIX@@
 
-die() {
-       echo >&2 "$@"
-       exit 1
+die () {
+       die_with_status 1 "$@"
+}
+
+die_with_status () {
+       status=$1
+       shift
+       echo >&2 "$*"
+       exit "$status"
 }
 
 GIT_QUIET=
@@ -84,7 +90,7 @@ $LONG_USAGE"
        fi
 
        case "$1" in
-               -h|--h|--he|--hel|--help)
+               -h)
                echo "$LONG_USAGE"
                exit
        esac
@@ -107,6 +113,19 @@ git_editor() {
        eval "$GIT_EDITOR" '"$@"'
 }
 
+git_pager() {
+       if test -t 1
+       then
+               GIT_PAGER=$(git var GIT_PAGER)
+       else
+               GIT_PAGER=cat
+       fi
+       : ${LESS=-FRSX}
+       export LESS
+
+       eval "$GIT_PAGER" '"$@"'
+}
+
 sane_grep () {
        GREP_OPTIONS= LC_ALL=C grep "$@"
 }
@@ -127,28 +146,61 @@ cd_to_toplevel () {
        }
 }
 
+require_work_tree_exists () {
+       if test "z$(git rev-parse --is-bare-repository)" != zfalse
+       then
+               die "fatal: $0 cannot be used without a working tree."
+       fi
+}
+
 require_work_tree () {
-       test $(git rev-parse --is-inside-work-tree) = true ||
+       test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true ||
        die "fatal: $0 cannot be used without a working tree."
 }
 
+require_clean_work_tree () {
+       git rev-parse --verify HEAD >/dev/null || exit 1
+       git update-index -q --ignore-submodules --refresh
+       err=0
+
+       if ! git diff-files --quiet --ignore-submodules
+       then
+               echo >&2 "Cannot $1: You have unstaged changes."
+               err=1
+       fi
+
+       if ! git diff-index --cached --quiet --ignore-submodules HEAD --
+       then
+               if [ $err = 0 ]
+               then
+                   echo >&2 "Cannot $1: Your index contains uncommitted changes."
+               else
+                   echo >&2 "Additionally, your index contains uncommitted changes."
+               fi
+               err=1
+       fi
+
+       if [ $err = 1 ]
+       then
+               test -n "$2" && echo >&2 "$2"
+               exit 1
+       fi
+}
+
 get_author_ident_from_commit () {
        pick_author_script='
        /^author /{
                s/'\''/'\''\\'\'\''/g
                h
                s/^author \([^<]*\) <[^>]*> .*$/\1/
-               s/'\''/'\''\'\'\''/g
                s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 
                g
                s/^author [^<]* <\([^>]*\)> .*$/\1/
-               s/'\''/'\''\'\'\''/g
                s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 
                g
                s/^author [^<]* <[^>]*> \(.*\)$/\1/
-               s/'\''/'\''\'\'\''/g
                s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 
                q
@@ -159,6 +211,13 @@ get_author_ident_from_commit () {
        LANG=C LC_ALL=C sed -ne "$pick_author_script"
 }
 
+# Clear repo-local GIT_* environment variables. Useful when switching to
+# another repository (e.g. when entering a submodule). See also the env
+# list in git_connect()
+clear_local_git_env() {
+       unset $(git rev-parse --local-env-vars)
+}
+
 # Make sure we are in a valid repository of a vintage we understand,
 # if we require to be in a git repository.
 if test -z "$NONGIT_OK"
@@ -189,5 +248,20 @@ case $(uname -s) in
        find () {
                /usr/bin/find "$@"
        }
+       is_absolute_path () {
+               case "$1" in
+               [/\\]* | [A-Za-z]:*)
+                       return 0 ;;
+               esac
+               return 1
+       }
        ;;
+*)
+       is_absolute_path () {
+               case "$1" in
+               /*)
+                       return 0 ;;
+               esac
+               return 1
+       }
 esac