From 204916e7762f52193a7a3108020b380f36ddbbb0 Mon Sep 17 00:00:00 2001
From: Raghu <raghur@users.noreply.github.com>
Date: Sun, 30 Sep 2018 21:53:24 +0530
Subject: [PATCH] Vim compat (#20)

Vim compatibility!
---
 README.adoc              | 29 ++++++++++++++++++++---------
 plugin/vim_compat.vim    | 12 ++++++++++++
 pythonx/ghost_wrapper.py | 13 +++++++++++++
 rplugin/python3/ghost.py | 17 ++++++++---------
 4 files changed, 53 insertions(+), 18 deletions(-)
 create mode 100644 plugin/vim_compat.vim
 create mode 100644 pythonx/ghost_wrapper.py

diff --git a/README.adoc b/README.adoc
index 6f8feff..451f892 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,6 +1,6 @@
-= (N)Vim Ghost
+= Vim Ghost
 
-Edit browser textarea content in Neovim!
+Edit browser textarea content in Vim/Neovim!
 
 [.center.text-center]
 image::https://i.imgur.com/yitnBrU.gif[demo,100%]
@@ -12,18 +12,32 @@ image::https://i.imgur.com/yitnBrU.gif[demo,100%]
 " Vim-plug
 Plug 'raghur/vim-ghost', {'do': ':GhostInstall'}
 ```
-. Ensure you have a neovim instance open. Run `:GhostStart` to start the server.
-. On any textara, click the ghost icon - switch to neovim and edit!. Content is sync'ed real time. Works both ways - edits in the browser window are pushed to neovim as well.
+. Ensure you have a vim/neovim instance open. Run `:GhostStart` to start the server.
+. On any textarea, click the ghost icon - switch to neovim and edit!. Content is sync'ed real time. Works both ways - edits in the browser window are pushed to neovim as well.
 . When done, just delete the buffer with `:bd!` - you'll be disconnected
 
 == Requirements
 
-* Recent neovim
+* Recent neovim/vim
 * Python 3.4+
 * Python plugin host - `python3 -c 'import neovim'` should not error
 * Python websocket server https://github.com/dpallot/simple-websocket-server.git
 ** This is automatically installed as a `pip --user` dependency when `:GhostInstall` runs.
 
+=== additional requirements for vim
+
+* https://github.com/roxma/vim-hug-neovim-rpc[vim-hug-neovim-rpc]
+* https://github.com/roxma/nvim-yarp[nvim-yarp]
+
+[source,vimscript]
+----
+Plug 'roxma/nvim-yarp', {'cond': v:version == 800 && !has('nvim')}
+Plug 'roxma/vim-hug-neovim-rpc',  {'cond': v:version == 800 && !has('nvim')}
+
+----
+
+== Auto switching to vim:
+
 ._Optional, but highly recommended - Switching focus to Neovim_
 * Linux: The `xdotool` command - if available, will be used to focus the nvim window. 
 Works in console, tmux or guis like neovim-qt
@@ -47,14 +61,11 @@ With Firefox moving to webextensions, *It's all text* is dead. Typing in text ar
 
 My vimscript fu is pretty limited - so I thought I'd write a python plugin for neovim.
 
-*PS: I know the repo name of vim-ghost is misleading.*
-
 == TODOS
 
 PR's welcome. Some areas:
 
-- vim compatibility
-- py2 support
+- [.line-through]#vim compatibility# - DONE
 
 Love it or just find it as useful as I do? Star this repo to let me know
 
diff --git a/plugin/vim_compat.vim b/plugin/vim_compat.vim
new file mode 100644
index 0000000..00f1471
--- /dev/null
+++ b/plugin/vim_compat.vim
@@ -0,0 +1,12 @@
+if has('nvim')
+    finish
+endif
+
+let s:ghost = yarp#py3('ghost_wrapper')
+
+func! GhostNotify(event, buffer)
+    return s:ghost.call('ghost_notify', a:event, a:buffer)
+endfunc
+
+com! -nargs=0 GhostStart call s:ghost.call('server_start')
+com! -nargs=0 GhostStop call s:ghost.call('server_stop')
diff --git a/pythonx/ghost_wrapper.py b/pythonx/ghost_wrapper.py
new file mode 100644
index 0000000..b847b58
--- /dev/null
+++ b/pythonx/ghost_wrapper.py
@@ -0,0 +1,13 @@
+from ghost import Ghost as _Ghost
+import vim
+
+_obj = _Ghost(vim)
+
+def server_start(*args):
+    return _obj.server_start(args, '')
+
+def server_stop(*args):
+    return _obj.server_stop(args, '')
+
+def ghost_notify(*args):
+    return _obj.ghost_notify(args)
diff --git a/rplugin/python3/ghost.py b/rplugin/python3/ghost.py
index c797921..9087425 100644
--- a/rplugin/python3/ghost.py
+++ b/rplugin/python3/ghost.py
@@ -102,15 +102,15 @@ def server_start(self, args, range):
             logger.info("server already running on port %d", self.port)
             return
 
-        if self.nvim.funcs.exists("g:ghost_port") == 1:
-            self.port = self.nvim.api.get_var("ghost_port")
+        if "ghost_port" in self.nvim.vars:
+            self.port = self.nvim.vars["ghost_port"]
         else:
-            self.nvim.api.set_var("ghost_port", self.port)
+            self.nvim.vars["ghost_port"] = self.port
 
-        if self.nvim.funcs.exists("g:ghost_cmd") == 1:
-            self.cmd = self.nvim.api.get_var("ghost_cmd")
+        if "ghost_cmd" in self.nvim.vars:
+            self.cmd = self.nvim.vars["ghost_cmd"]
         else:
-            self.nvim.api.set_var("ghost_cmd", self.cmd)
+            self.nvim.vars["ghost_cmd"] = self.cmd
 
         self.httpserver = MyHTTPServer(self, ('127.0.0.1', self.port),
                                        WebRequestHandler)
@@ -130,10 +130,9 @@ def server_start(self, args, range):
                              self.winapp.process.real)
             except ProcessNotFoundError as pne:
                 logger.warning("No process called nvim-qt found: %s", pne)
-        elif self.nvim.funcs.exists("g:ghost_nvim_window_id") == 1:
+        elif "ghost_nvim_window_id" in self.nvim.vars:
             # for linux
-            self.linux_window_id = self.nvim.api.get_var(
-                "ghost_nvim_window_id").strip()
+            self.linux_window_id = self.nvim.vars["ghost_nvim_window_id"].strip()
         elif sys.platform.startswith('darwin'):
             if os.getenv('ITERM_PROFILE', None):
                 self.darwinapp = "iTerm2"