image: add support for Netgear encrypted image

[openwrt/staging/hauke.git] / scripts / get_source_date_epoch.sh

diff --git a/scripts/get_source_date_epoch.sh b/scripts/get_source_date_epoch.sh
index 84ba4454543982716cc7f488840975ae832da104..d122acf385326b18da4ac0be7a442c2f8c2d0806 100755 (executable)
--- a/scripts/get_source_date_epoch.sh
+++ b/scripts/get_source_date_epoch.sh
@@ -1,28 +1,33 @@
 #!/usr/bin/env bash
 export LANG=C
 export LC_ALL=C
-[ -n "$TOPDIR" ] && cd $TOPDIR
+
+if [ -n "$TOPDIR" ]; then
+       cd "$TOPDIR" || exit 1
+fi
+
+SOURCE="${1:-.}"
 
 try_version() {
-       [ -f version.date ] || return 1
-       SOURCE_DATE_EPOCH="$(cat version.date)"
+       [ -f "$SOURCE/version.date" ] || return 1
+       SOURCE_DATE_EPOCH=$(cat "$SOURCE/version.date")
        [ -n "$SOURCE_DATE_EPOCH" ]
 }
 
 try_git() {
-       [ -e .git ] || return 1
-       SOURCE_DATE_EPOCH="$(git log -1 --format=format:%ct)"
+       SOURCE_DATE_EPOCH=$(git -C "$SOURCE" log -1 --format=format:%ct \
+               "$SOURCE" 2>/dev/null)
        [ -n "$SOURCE_DATE_EPOCH" ]
 }
 
 try_hg() {
-       [ -d .hg ] || return 1
-       SOURCE_DATE_EPOCH="$(hg log --template '{date}' -l 1 | cut -d. -f1)"
+       SOURCE_DATE_EPOCH=$(hg --cwd "$SOURCE" log --template '{date}' -l 1 \
+               "$SOURCE" 2>/dev/null | cut -d. -f1)
        [ -n "$SOURCE_DATE_EPOCH" ]
 }
 
 try_mtime() {
-       perl -e 'print((stat $ARGV[0])[9])' "$0"
+       SOURCE_DATE_EPOCH=$(perl -e 'print((stat $ARGV[0])[9])' "$0")
        [ -n "$SOURCE_DATE_EPOCH" ]
 }