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-rwxr-xr-xcontrib/maxlen.bash24
1 files changed, 19 insertions, 5 deletions
diff --git a/contrib/maxlen.bash b/contrib/maxlen.bash
index a4aa082..14d40da 100755
--- a/contrib/maxlen.bash
+++ b/contrib/maxlen.bash
@@ -13,6 +13,13 @@ if [[ $# -ne 1 || $1 == -* ]]; then
exit 1
fi
+# Only show live progress if connected to a termial
+# https://stackoverflow.com/a/911213/1380267
+INTERACTIVE=0
+if [[ -t 1 ]] ; then
+ INTERACTIVE=1
+fi
+
cd "$1"
echo "Testing $PWD"
@@ -22,7 +29,7 @@ NAME=""
while true ; do
NEXT="${NAME}x"
if [[ -e $NEXT ]]; then
- echo "error: file $NEXT already exists"
+ echo "error: file $PWD/$NEXT already exists"
exit 1
fi
touch $NEXT 2> /dev/null || break
@@ -44,7 +51,10 @@ MAX_DIRNAME=${#NAME}
echo "${#NAME}"
for CHARS_PER_SUBDIR in 1 10 100 $MAX_DIRNAME ; do
- echo -n " Maximum path length with $(printf %3d $CHARS_PER_SUBDIR) chars per subdir: "
+ echo -n " Maximum path length with $(printf %3d $CHARS_PER_SUBDIR) chars per subdir: "
+ if [[ $INTERACTIVE -eq 1 ]] ; then
+ echo -n " "
+ fi
# Trick from https://stackoverflow.com/a/5349842/1380267
SUBDIR=$(printf 'x%.0s' $(seq 1 $CHARS_PER_SUBDIR))
mkdir "$SUBDIR"
@@ -54,8 +64,10 @@ for CHARS_PER_SUBDIR in 1 10 100 $MAX_DIRNAME ; do
NEXT="$P/$SUBDIR"
mkdir "$NEXT" 2> /dev/null || break
P=$NEXT
- echo -n -e "\b\b\b\b"
- printf %4d ${#P}
+ if [[ $INTERACTIVE -eq 1 ]] ; then
+ echo -n -e "\b\b\b\b"
+ printf %4d ${#P}
+ fi
done
# Then add one character at a time until we hit an error
NAME=""
@@ -67,7 +79,9 @@ for CHARS_PER_SUBDIR in 1 10 100 $MAX_DIRNAME ; do
if [[ $NAME != "" ]] ; then
P=$P/$NAME
fi
- echo -n -e "\b\b\b\b"
+ if [[ $INTERACTIVE -eq 1 ]] ; then
+ echo -n -e "\b\b\b\b"
+ fi
printf %4d ${#P}
echo
rm -R "$SUBDIR"