From 5bc380150aee647d26a5a538ed855e9e82dcc7f7 Mon Sep 17 00:00:00 2001
From: Adam Stankiewicz <sheerun@sher.pl>
Date: Thu, 12 Sep 2013 17:32:53 +0200
Subject: Add erlang support

---
 indent/erlang.vim | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 indent/erlang.vim

(limited to 'indent/erlang.vim')

diff --git a/indent/erlang.vim b/indent/erlang.vim
new file mode 100644
index 00000000..370a8810
--- /dev/null
+++ b/indent/erlang.vim
@@ -0,0 +1,58 @@
+" Vim indent file
+" Language: Erlang
+" Author:   Ricardo Catalinas Jiménez <jimenezrick@gmail.com>
+" License:  Vim license
+" Version:  2013/09/11
+
+if !exists('g:erlang_force_use_vimerl_indent')
+	let g:erlang_force_use_vimerl_indent = 0
+endif
+
+if exists('b:did_indent') || (v:version >= 704 && !g:erlang_force_use_vimerl_indent)
+	finish
+else
+	let b:did_indent = 1
+endif
+
+setlocal indentexpr=ErlangIndent()
+setlocal indentkeys=!^F,o,O,=),=},=],=>>,=of,=catch,=after,=end
+
+if exists('*ErlangIndent')
+	finish
+endif
+
+let s:erlang_indent_file = expand('<sfile>:p:h') . '/erlang_indent.erl'
+if filewritable(expand('<sfile>:p:h')) == 2
+	let s:in_fifo  = expand('<sfile>:p:h') . '/vimerl_in_fifo.' . getpid()
+	let s:out_fifo = expand('<sfile>:p:h') . '/vimerl_out_fifo.' . getpid()
+else
+	let s:in_fifo  = '/tmp/vimerl_in_fifo.' . getpid()
+	let s:out_fifo = '/tmp/vimerl_out_fifo.' . getpid()
+endif
+
+execute 'silent !mkfifo' s:in_fifo
+execute 'silent !mkfifo' s:out_fifo
+execute 'silent !' . s:erlang_indent_file s:out_fifo s:in_fifo '&'
+
+autocmd VimLeave * call <SID>StopIndenter()
+
+function s:StopIndenter()
+	call writefile([], s:out_fifo)
+	call delete(s:in_fifo)
+	call delete(s:out_fifo)
+endfunction
+
+function ErlangIndent()
+	if v:lnum == 1
+		return 0
+	else
+		call writefile([v:lnum] + getline(1, v:lnum), s:out_fifo)
+		let indent = split(readfile(s:in_fifo)[0])
+
+		if len(indent) == 1 || !&expandtab
+			return indent[0] * &shiftwidth
+		else
+			return indent[1]
+		endif
+	endif
+endfunction
-- 
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