From aa47068fd0f947cde9d8d013e34bc5b36abe0cf7 Mon Sep 17 00:00:00 2001
From: Marty Oehme <marty.oehme@gmail.com>
Date: Sat, 6 Aug 2022 21:54:55 +0200
Subject: [PATCH] scripts: Add nsxiv-rifle script

Opens basically any path, local or remote in nsxiv.
Can take multiple paths to open all of them.

Additionally, alias whichever version of the image viewer is available
on the system as `iv`, using `nsxiv-rifle`, `nsxiv`, `sxiv` in order of
preference.
---
 scripts/.local/bin/nsxiv-rifle | 75 ++++++++++++++++++++++++++++++++++
 sh/.config/sh/alias            | 11 +++++
 2 files changed, 86 insertions(+)
 create mode 100755 scripts/.local/bin/nsxiv-rifle

diff --git a/scripts/.local/bin/nsxiv-rifle b/scripts/.local/bin/nsxiv-rifle
new file mode 100755
index 0000000..60b0e3d
--- /dev/null
+++ b/scripts/.local/bin/nsxiv-rifle
@@ -0,0 +1,75 @@
+#!/usr/bin/env sh
+#
+# Advanced nsxiv url opening script.
+#
+# Can open remote urls of individual images, galleries, and local files at the same time.
+# Uses gallery-dl for remote gallery opening - so if gallery-dl can open it, so can nsxiv.
+#
+# Usage: simply add multiple urls/paths as arguments.
+# nsxiv-rifle "https://linkto.my/image.png" my/local/relative-path.jpg /home/absolute.gif
+
+cache_dir="$(mktemp -d)"
+
+die() {
+    [ -n "$1" ] && printf '%s\n' "$*" >&2
+    exit 1
+}
+
+cleanup() {
+    rm -f -- "$cache_dir"/*
+}
+
+from_local() {
+    fpath="$(realpath "$1")"
+    ln -s "$fpath" "$cache_dir"
+}
+
+# invokes single image downloading or gallery downloading depending on content type
+from_remote() {
+    link="$(dereference "$1")"
+    if curl -sLI "$link" | grep -i '^Content-Type:' | grep -q image; then
+        get_single_image "$link"
+    else
+        get_gallery "$link"
+    fi
+}
+
+get_gallery() {
+    command -v gallery-dl 1>/dev/null 2>&1 || return
+    gallery-dl -q -D "$cache_dir" "$1"
+}
+
+get_single_image() {
+    pwd="$PWD"
+    cd "$cache_dir" && curl -sSLO "$1"
+    cd "$pwd" || exit 1
+}
+
+# unaliases urls which will not be downloaded correctly otherwise
+dereference() {
+    # teddit
+    if echo "$1" | grep -qe "https\?://w\?w\?w\?\.\?teddit\.net.\+"; then
+        echo "$1" | sed -e 's|^.*pics/w:null_\(.\+\)$|https://i.redd.it/\1|'
+    else
+        echo "$1"
+    fi
+}
+
+### main ###
+command -v nsxiv 1>/dev/null 2>&1 || die "Requires nsxiv installed"
+
+[ -z "$1" ] && nsxiv
+trap cleanup EXIT
+[ -d "$cache_dir" ] || mkdir -p -- "$cache_dir" || die
+im_number=1
+while [ -n "$1" ]; do
+    case "$1" in
+    *://*.*) from_remote "$1" ;;
+    *) from_local "$1" ;;
+    esac
+    im_number=$((im_number + 1))
+    shift
+done
+
+[ "$(find "$cache_dir" -type f -print | wc -l)" -ne 0 ] &&
+    nsxiv -p "$cache_dir"
diff --git a/sh/.config/sh/alias b/sh/.config/sh/alias
index a6a247c..fd8fe99 100644
--- a/sh/.config/sh/alias
+++ b/sh/.config/sh/alias
@@ -93,6 +93,17 @@ if exist vifm; then
     alias vmm='vifm ${PWD}'
 fi
 
+# nsxiv image viewer
+if exist nsxiv; then
+    if exist nsxiv-rifle; then
+        alias iv=nsxiv-rifle
+    else
+        alias iv=nsxiv
+    fi
+elif exist sxiv; then
+    alias iv=sxiv
+fi
+
 # python
 if exist ptipython; then
     alias py=ptipython