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config/nsxiv/exec/nsxiv-url

@@ -0,0 +1,32 @@
+#!/usr/bin/env sh
+
+cache_dir="${TMPDIR:-/tmp}/nsxiv"
+
+die() {
+    [ -n "$1" ] && printf '%s\n' "$*" >&2;
+    exit 1
+}
+
+cleanup() {
+    rm -f -- "$cache_dir"/*
+}
+
+get_image() (
+    cd "$cache_dir" && curl -sSLO "$1"
+)
+
+### main ###
+
+[ -z "$1" ] && die "No arguments given"
+trap cleanup EXIT
+[ -d "$cache_dir" ] || mkdir -p -- "$cache_dir" || die
+while [ -n "$1" ]; do
+    case "$1" in
+        *://*.*) get_image "$1" ;;
+        *) echo "Invalid url: $1" >&2 ;;
+    esac
+    shift
+done
+
+[ "$(find "$cache_dir" -type f -print | wc -l)" -ne 0 ] &&
+nsxiv -p "$cache_dir"