#!/bin/bash
label_dir="/var/www/komarix.org/paul_blogger/labels"
echo "Content-type: text/html"
echo
echo ""
echo ""
# I use env vars to communicate with the while-loop below, because
# the while-loop is excecuted in a sub-shell (due to the pipe).
export LABEL_SEPARATOR=", "
# Controls use of label-separator.
export FIRST_ITEM=1
# Used for line-breaking.
export ACCUMULATOR=""
export MAX_CHARS=35
export NUM_CHARS=0
# We cannot return values in the accumulator, and the while-loop
# does not know which item is the last in the list. Therefore we
# include a marker for the end of the list.
export ENDOFLIST="ENDOFLIST_MARKER"
(ls ${label_dir}/*.html; echo $ENDOFLIST) \
| while read label_file; do
if [ "$label_file" = "$ENDOFLIST" ]; then
echo "${ACCUMULATOR}
"
break;
fi
bname=$(basename "$label_file" .html)
if [ -z "$bname" ]; then continue; fi
escbname=$(echo "$bname" | sed 's: :%20:g')
lname="http://notes.komarix.org/labels/${escbname}.html"
# Number of posts for this label.
count=$(grep '' "$label_file" | wc -l)
# Create the link text.
link_text="${bname} ($count)"
# Create the html markup.
markup="${link_text}"
# Line breaking.
textlen=$(echo "$link_text" | wc -c)
newlen=$(($NUM_CHARS + $textlen))
if [ "$newlen" -le "$MAX_CHARS" ]; then
# There's room on this line.
# Add a preceding comma if we are not the first item on this line.
if [ "$FIRST_ITEM" -eq 0 ]; then
markup="${LABEL_SEPARATOR}${markup}"
fi
export FIRST_ITEM=0
export ACCUMULATOR="${ACCUMULATOR}${markup}"
export NUM_CHARS="$newlen"
else
# Not enough room on this line.
echo "${ACCUMULATOR}
"
export ACCUMULATOR="$markup"
export NUM_CHARS="$textlen"
fi
done
# Dump final accumulator string.
if [ -n "$ACCUMULATOR" ]; then
echo "${ACCUMULATOR}
"
fi
echo ""
echo ""