truncating

download.sh

@@ -170,9 +170,30 @@ get_items() {
 # Expecting a single line: ["<filename>","<download_url>"]
 JSON_PAIR_RE='^\["([^"]*)","([^"]*)"\]$'
 
+#sanitize_filename() {
+#  local in=$1
+#  local truncated=${in:0:80}
+#  # replace anything not alnum, underscore, dot or dash with underscore
+#  printf '%s' "$truncated" | sed 's/[^A-Za-z0-9_.-]/_/g'
+#}
+
 sanitize_filename() {
   local in=$1
-  local truncated=${in:0:80}
+  local truncated
+  # find cutoff at first space after 80th character
+  if (( ${#in} > 80 )); then
+    local prefix=${in:0:80}
+    local remainder=${in:80}
+    if [[ $remainder == *' '* ]]; then
+      local next_space_pos
+      next_space_pos=$(expr index "$remainder" ' ')
+      truncated="${prefix}${remainder:0:next_space_pos}"
+    else
+      truncated=$in
+    fi
+  else
+    truncated=$in
+  fi
   # replace anything not alnum, underscore, dot or dash with underscore
   printf '%s' "$truncated" | sed 's/[^A-Za-z0-9_.-]/_/g'
 }