--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/autoload/gutentags/gtags_cscope.vim	Wed Jan 11 15:38:43 2017 -0800
@@ -0,0 +1,120 @@
+" gtags_cscope module for Gutentags
+
+if !has('cscope')
+	throw "Can't enable the gtags-cscope module for Gutentags, this Vim has ".
+				\ "no support for cscope files."
+endif
+
+" Global Options {{{
+
+if !exists('g:gutentags_gtags_executable')
+	let g:gutentags_gtags_executable = 'gtags'
+endif
+
+if !exists('g:gutentags_gtags_dbpath')
+	let g:gutentags_gtags_dbpath = ''
+endif
+
+if !exists('g:gutentags_gtags_options_file')
+	let g:gutentags_gtags_options_file = '.gutgtags'
+endif
+
+if !exists('g:gutentags_gtags_cscope_executable')
+	let g:gutentags_gtags_cscope_executable = 'gtags-cscope'
+endif
+
+if !exists('g:gutentags_auto_add_gtags_cscope')
+	let g:gutentags_auto_add_gtags_cscope = 1
+endif
+
+" }}}
+
+" Gutentags Module Interface {{{
+
+let s:db_connected = 0
+
+function! gutentags#gtags_cscope#init(project_root) abort
+	let l:db_path = gutentags#get_cachefile(
+				\ a:project_root, g:gutentags_gtags_dbpath )
+	let l:db_file = l:db_path . '/GTAGS'
+
+	if !isdirectory(l:db_path)
+		call mkdir(l:db_path, 'p')
+	endif
+
+	let b:gutentags_files['gtags_cscope'] = l:db_file
+
+	execute 'set cscopeprg=' . g:gutentags_gtags_cscope_executable
+
+	" The combination of gtags-cscope, vim's cscope and global files is
+	" a bit flaky. Environment variables are safer than vim passing
+	" paths around and interpreting input correctly.
+	let $GTAGSDBPATH = l:db_path
+	let $GTAGSROOT = a:project_root
+
+	if g:gutentags_auto_add_gtags_cscope && filereadable(l:db_file)
+		set nocscopeverbose
+		execute 'cs add ' . fnameescape(l:db_file)
+		set cscopeverbose
+		let s:db_connected = 1
+	endif
+endfunction
+
+function! gutentags#gtags_cscope#command_terminated(job_id, data, event) abort
+	if a:data == 0
+		if !s:db_connected
+			set nocscopeverbose
+			execute 'cs add ' . fnameescape(self.db_file)
+			set cscopeverbose
+			let s:db_connected = 1
+		endif
+	endif
+endfunction
+
+function! gutentags#gtags_cscope#generate(proj_dir, db_file, write_mode) abort
+	let l:db_path = fnamemodify(a:db_file, ':p:h')
+
+	let l:cmd = gutentags#get_execute_cmd()
+	" gtags doesn't honour GTAGSDBPATH and GTAGSROOT, so PWD and dbpath
+	" have to be set
+
+	let l:proj_options_file = a:proj_dir . '/' . g:gutentags_gtags_options_file
+	let l:proj_options = ''
+	if filereadable(l:proj_options_file)
+		let l:lines = readfile(l:proj_options_file)
+		let l:proj_options .= join(l:lines, ' ')
+	endif
+
+	let l:cmd .= ' PWD=' . a:proj_dir
+	let l:cmd .= ' ' . g:gutentags_gtags_executable
+	let l:cmd .= ' ' . l:proj_options
+	let l:cmd .= ' --incremental '
+	let l:cmd .= ' --quiet '
+	let l:cmd .= ' ' . l:db_path
+	let l:cmd .= ' '
+	let l:cmd .= gutentags#get_execute_cmd_suffix()
+
+	call gutentags#trace("Running: " . l:cmd)
+	call gutentags#trace("In:      " . getcwd())
+	if !g:gutentags_fake
+		if !(has('nvim') && exists('*jobwait'))
+			if !g:gutentags_trace
+				silent execute l:cmd
+			else
+				execute l:cmd
+			endif
+		else
+			let job_dict = { 'db_file': a:db_file }
+			let job_cmd = l:cmd
+			let job_id = jobstart(job_cmd, job_dict)
+		endif
+
+		let l:full_gtags_file = fnamemodify(l:db_path, ':p')
+		call gutentags#add_progress('gtags_cscope', a:db_file)
+	else
+		call gutentags#trace("(fake... not actually running)")
+	endif
+	call gutentags#trace("")
+endfunction
+
+" }}}