Fix #643 - Add support for write-good for many languages

autoload/ale/handlers/writegood.vim

@@ -0,0 +1,50 @@
+" Author: Sumner Evans <sumner.evans98@gmail.com>
+" Description: Error handling for errors in the write-good format.
+
+function! ale#handlers#writegood#ResetOptions() abort
+    call ale#Set('writegood_options', '')
+    call ale#Set('writegood_executable', 'write-good')
+    call ale#Set('writegood_use_global', 0)
+endfunction
+
+" Reset the options so the tests can test how they are set.
+call ale#handlers#writegood#ResetOptions()
+
+function! ale#handlers#writegood#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'writegood', [
+    \   'node_modules/.bin/write-good',
+    \   'node_modules/write-good/bin/write-good.js',
+    \])
+endfunction
+
+function! ale#handlers#writegood#GetCommand(buffer) abort
+    let l:executable = ale#handlers#writegood#GetExecutable(a:buffer)
+    let l:options = ale#Var(a:buffer, 'writegood_options')
+
+    return ale#node#Executable(a:buffer, l:executable)
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' %t'
+endfunction
+
+function! ale#handlers#writegood#Handle(buffer, lines) abort
+    " Look for lines like the following.
+    "
+    " "it is" is wordy or unneeded on line 20 at column 53
+    " "easily" can weaken meaning on line 154 at column 29
+    let l:pattern = '\v^(".*"\s.*)\son\sline\s(\d+)\sat\scolumn\s(\d+)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        " Add the linter error. Note that we need to add 1 to the col because
+        " write-good reports the column corresponding to the space before the
+        " offending word or phrase.
+        call add(l:output, {
+        \   'text': l:match[1],
+        \   'lnum': l:match[2] + 0,
+        \   'col': l:match[3] + 1,
+        \   'type': 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction