Added 2 plugins for drag and drop support (#352)

* Added 2 plugins for drag and drop support

These scripts uses https://github.com/mwh/dragon
and curl.

It allows nnn to drag and drop files either to other programs, or to
itself.

* added link to dependency and spelling

* added drag/drop-file scripts to readme table

1 files changed, 40 insertions, 0 deletions

diff --git a/plugins/drop-file b/plugins/drop-file
new file mode 100755
index 0000000..d824c30
--- /dev/null
+++ b/plugins/drop-file
@@ -0,0 +1,40 @@
+#!/usr/bin/env sh
+
+# Description: Provides drag and drop window for files.
+#
+# Files that are dropped will be added to nnn's selection
+# Some web based files will be downloaded to current directory with curl
+# and it may overwrite some existing files
+#
+# The user has to press mm to clear nnn's selection first
+#
+# Dependency: https://github.com/mwh/dragon
+# Shell: POSIX compliant
+# Author: 0xACE
+
+selection=${XDG_CONFIG_HOME:-$HOME/.config}/nnn/.selection
+
+dnd()
+{
+    dragon "$@"
+}
+
+function add_file() {
+	echo -n "$@" >> "$selection"
+	echo -ne "\0" >> "$selection"
+}
+
+echo -n > "$selection"
+
+# which dnd
+# upstream calls it dragon
+
+dnd --print-path --target | while read f
+do
+	if echo -n "$f" | grep '^\(https\?\|ftps\?\|s\?ftp\):\/\/' ; then
+		curl -LJO "$f"
+		add_file "$PWD/$(basename "$f")"
+	elif [ -e "$f" ]; then
+		add_file "$f"
+	fi
+done &