Close #3770 - Add support for checking circleci configs

1 files changed, 35 insertions, 0 deletions

diff --git a/ale_linters/yaml/circleci.vim b/ale_linters/yaml/circleci.vim
new file mode 100644
index 00000000..3df61459
--- /dev/null
+++ b/ale_linters/yaml/circleci.vim
@@ -0,0 +1,35 @@
+function! ale_linters#yaml#circleci#Handle(buffer, lines) abort
+    let l:match_index = -1
+    let l:output = []
+
+    for l:index in range(len(a:lines))
+        let l:line = a:lines[l:index]
+
+        if l:line =~? 'Error: ERROR IN CONFIG FILE:'
+            let l:match_index = l:index + 1
+            break
+        endif
+    endfor
+
+    if l:match_index > 0
+        return [{
+        \   'type': 'E',
+        \   'lnum': 1,
+        \   'text': a:lines[l:match_index],
+        \   'detail': join(a:lines[l:match_index :], "\n"),
+        \}]
+    endif
+
+    return []
+endfunction
+
+" The circleci validate requires network requests, so we'll only run it when
+" files are saved to prevent the server from being hammered.
+call ale#linter#Define('yaml', {
+\   'name': 'circleci',
+\   'executable': {b -> expand('#' . b . ':p') =~? '\.circleci' ? 'circleci' : ''},
+\   'command': 'circleci config validate - < %s',
+\   'callback': 'ale_linters#yaml#circleci#Handle',
+\   'output_stream': 'stderr',
+\   'lint_file': 1,
+\})