X-Git-Url: https://git.stderr.nl/gitweb?a=blobdiff_plain;f=lib%2Ftools.in;h=4ca438f05e8dc17fc7d44537e66145609a0d1dc4;hb=refs%2Fheads%2Fvsfixes;hp=37fa2129105ede12e8da22113870056e32a4297b;hpb=c6a1b1230dcaaf14efa296cd29e748e749a0ed3a;p=matthijs%2Fupstream%2Fbackupninja.git

diff --git a/lib/tools.in b/lib/tools.in
index 37fa212..4ca438f 100644
--- a/lib/tools.in
+++ b/lib/tools.in
@@ -10,14 +10,7 @@
 # create a temporary file in a secure way.
 #
 function maketemp() {
-	if [ -x /bin/mktemp ]
-	then
-		local tempfile=`mktemp /tmp/$1.XXXXXXXX`
-	else
-		DATE=`date`
-		sectmp=`echo $DATE | @MD5SUM@ | cut -d- -f1`
-		local tempfile=/tmp/$1.$sectmp
-	fi
+	local tempfile=`mktemp /tmp/$1.XXXXXXXX`
 	echo $tempfile
 }
 
@@ -53,3 +46,62 @@ function getconf() {
 	# because it is in an 'eval' statement.
 	eval $1='$ret'
 }
+
+#
+# Replaces escape sequences in $1 with the proper values for the vserver $2.
+# The result is put on stdout.  If $2 is empty, values for the host are
+# replaced. The following values are replaced:
+#
+# %%  Literal %
+# %h  The short hostname (as returned by hostname -s)
+# %H  The full hostname (as returned by hostname --fqdn)
+# %n  The vserver name, or empty for the host
+# %N  The vserver name, or "host" for the host
+# %v  The vserver root directory, or empty for the host
+#
+# Note that the given vserver must be running!
+#
+function interpolate() {
+	path=$1
+	vsname=$2
+	vexec=${vsname:+$VSERVER $vsname exec }
+	# Find the values to replace
+	h=`$vexec hostname -s`
+	H=`$vexec hostname --fqdn`
+	n=$vsname
+	N=${vsname:-host}
+	v=${vsname:+$VROOTDIR/$vsname}
+
+	expr=''
+	for var in h H n N v; do
+		# Do indirect lookup of the value to replace
+		val=${!var}
+		# Escape slashes (twice, bash seems to eat one somewhere)
+		val=`echo "$val" | sed 's#/#\\\\/#g'`
+		# Add replacement pattern. The first part checks that there is
+		# an odd number of percent signs before the variable, so
+		# double % is properly left alone.
+		expr="${expr}s/\(\(^\|[^%]\)\(%%\)*\)%$var/\1$val/g;"
+	done
+	# Finally replace literal % signs
+	expr="${expr}s/%%/%/g"
+
+	# 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))
+}