X-Git-Url: https://git.stderr.nl/gitweb?a=blobdiff_plain;f=lib%2Ftools.in;h=4ca438f05e8dc17fc7d44537e66145609a0d1dc4;hb=1f3891846c79f57c458e6848958f4f5c5cd08898;hp=fe7d54a38de94fc8c7b44513e402e227314021d8;hpb=1775e74030da0071f8c49b60d076afdea06a8cd6;p=matthijs%2Fupstream%2Fbackupninja-vserver.git

diff --git a/lib/tools.in b/lib/tools.in
index fe7d54a..4ca438f 100644
--- a/lib/tools.in
+++ b/lib/tools.in
@@ -89,3 +89,19 @@ function interpolate() {
 	# Do the actual interpolation
 	echo $path | sed "$expr"
 }
+
+# Does the $1 start with $2 ?
+function starts_with() {
+	# Get the head of $1 as long as $2
+	head=`echo $1 | head -c ${#2}`
+	# Is it equal to $2?
+	[ "$head" = "$2" ]
+}
+
+# Strip the prefix $2 from $1. Assumes that $1 actually starts with $1.
+# The result is put on stdout.
+function strip_prefix() {
+	# Strip the first ${#2} (the length of $2) characters from $1.
+	# tail -c +N means start at the Nth byte, 1-based, so we add 1.
+	echo $1 | tail -c +$((${#2}+1))
+}