beesh: Abort if download fails

src/beesh.sh.in

@@ -274,27 +274,22 @@ function fetch_one_file() {
             nocheck=""
         fi
 
-        if [ ! -s "${F}/${file}" ] ; then
-            rm -vf "${F}/${file}"
-        fi
-
-        trap "rm -f ${F}/${file}" EXIT
-
-        print_info "fetching $url"
-        wget \
-            --output-document="${F}/${file}" \
-            --no-clobber \
-            --timeout=60 \
-            --tries=1 \
-            "${url}" || true
-
-        trap - EXIT
-
-        ls -ld "${F}/${file}"
-
-        if [ ! -s "${F}/${file}" ] ; then
-            print_error "ERROR: ${F}/${file} is empty, download failed."
-            exit 1
+        if [ -s "${F}/${file}" ]; then
+            print_info "File ‘${F}/${file}‘ already there; not retrieving."
+        else
+            print_info "fetching $url"
+            wget \
+                --output-document="${F}/${file}.tmp" \
+                --timeout=60 \
+                --tries=1 \
+                "${url}"
+            ls -ld "${F}/${file}.tmp"
+            if [ ! -s "${F}/${file}.tmp" ] ; then
+                print_error "ERROR: ${F}/${file}.tmp is empty, download failed."
+                rm "${F}/${file}.tmp"
+                exit 1
+            fi
+            mv "${F}/${file}.tmp" "${F}/${file}"
         fi
     fi