Implement plugins control of nnn + plugins (#364)

* Implement plugins control of nnn + plugins

* Refactor plugins control code and fix getplugs to recognize hidden files

* Fix bug when going to dir on non-current context from plugin

* Fix some plugins to work on openbsd and freebsd

* Renamings

* Switch to -R flag in cp instead of -r; BSDs complain

* Change braces of function location

* Rewrite plugin creation in README and add new plugins to the table

* Update the fzcd script to include fzy or fzf

* Change plugin name resolve-link-dir -> lncd

* Fixing plugins README table

* Remove some cd plugins but add them as examples to plugins README

1 files changed, 33 insertions, 0 deletions

diff --git a/plugins/.nnn-plugin-helper b/plugins/.nnn-plugin-helper
new file mode 100644
index 0000000..ec66a29
--- /dev/null
+++ b/plugins/.nnn-plugin-helper
@@ -0,0 +1,33 @@
+#!/usr/bin/env sh
+
+# Description: Helper script for plugins
+#
+# Shell: POSIX compliant
+# Author: Anna Arad
+
+selection=${XDG_CONFIG_HOME:-$HOME/.config}/nnn/.selection
+
+## Ask nnn to switch to directory $1 in context $2.
+## If $2 is not provided, the function asks explicitly.
+nnn_cd () {
+    dir=$1
+
+    if [ -z "$NNN_PIPE" ]; then
+        echo "No pipe file found" 1>&2
+        return
+    fi
+
+    if [ -n "$2" ]; then
+        context=$2
+    else
+        echo -n "Choose context 1-4 (blank for current): "
+        read context
+    fi
+
+    echo -n ${context:-0}$dir > $NNN_PIPE
+}
+
+cmd_exists () {
+	which "$1" > /dev/null 2>&1
+	echo $?
+}