feat: add rscp function for rsyncing files to NAS datasets

functions/rscp.fish

@@ -0,0 +1,55 @@
+function rscp
+    if test (count $argv) -lt 2
+        echo "Usage: rscp SOURCE DESTINATION"
+        return 1
+    end
+
+    if not command -q rsync
+        echo "rscp: 'rsync' is not installed. Install it via your package manager."
+        return 1
+    end
+
+    set -l src $argv[1]
+    set -l dst $argv[2]
+
+    # Mount <-> NAS dataset mapping (keep both lists in the same order)
+    set -l mounts /home/honney/mount/Media /home/honney/mount/Data /home/honney/mount/Ripping /home/honney/mount/Apps
+    set -l remotes NAS:/mnt/tank/Media NAS:/mnt/tank/Data NAS:/mnt/tank/Ripping NAS:/mnt/tank/Apps
+
+    set -l src_remote 0
+    set -l dst_remote 0
+
+    for i in (seq (count $mounts))
+        if string match -q -- $mounts[$i] $src; or string match -q -- "$mounts[$i]/*" $src
+            set src (string replace -f -- $mounts[$i] $remotes[$i] -- $src)
+            set src_remote 1
+            break
+        end
+    end
+
+    for i in (seq (count $mounts))
+        if string match -q -- $mounts[$i] $dst; or string match -q -- "$mounts[$i]/*" $dst
+            set dst (string replace -f -- $mounts[$i] $remotes[$i] -- $dst)
+            set dst_remote 1
+            break
+        end
+    end
+
+    if test $src_remote -eq 0 -a $dst_remote -eq 0
+        echo "cp -av -- $src $dst"
+        command cp -av -- $src $dst
+        return $status
+    end
+
+    # --no-perms: required - TrueNAS ZFS datasets use SMB ACLs and reject unix perms preservation
+    set -l opts -avh --no-perms --info=progress2 --partial
+    if test $dst_remote -eq 1
+        set -a opts --rsync-path="sudo -n rsync" --chown=1000:0
+    end
+    if test $src_remote -eq 1
+        set -a opts --rsync-path="sudo -n rsync"
+    end
+
+    echo rsync $opts -- $src $dst
+    command rsync $opts -- $src $dst
+end