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" Author: hauleth - https://github.com/hauleth
" always, yes, never
call ale#Set('dockerfile_hadolint_use_docker', 'never')
call ale#Set('dockerfile_hadolint_docker_image', 'hadolint/hadolint')
function! ale_linters#dockerfile#hadolint#Handle(buffer, lines) abort
" Matches patterns line the following:
"
" /dev/stdin:19 DL3001 Pipe chain should start with a raw value.
" /dev/stdin:19:3 unexpected thing
let l:pattern = '\v^/dev/stdin:(\d+):?(\d+)? ((DL|SC)(\d+) )?(.+)$'
let l:output = []
for l:match in ale#util#GetMatches(a:lines, l:pattern)
let l:lnum = 0
let l:colnum = 0
if l:match[1] isnot# ''
let l:lnum = l:match[1] + 0
endif
if l:match[2] isnot# ''
let l:colnum = l:match[2] + 0
endif
let l:type = 'W'
let l:text = l:match[6]
let l:detail = l:match[6]
let l:domain = 'https://github.com/hadolint/hadolint/wiki/'
if l:match[4] is# 'SC'
let l:domain = 'https://github.com/koalaman/shellcheck/wiki/'
endif
if l:match[5] isnot# ''
let l:code = l:match[4] . l:match[5]
let l:link = ' ( ' . l:domain . l:code . ' )'
let l:detail = l:code . l:link . "\n\n" . l:detail
else
let l:type = 'E'
endif
call add(l:output, {
\ 'lnum': l:lnum,
\ 'col': l:colnum,
\ 'type': l:type,
\ 'text': l:text,
\ 'detail': l:detail
\})
endfor
return l:output
endfunction
" This is a little different than the typical 'executable' callback. We want
" to afford the user the chance to say always use docker, never use docker,
" and use docker if the hadolint executable is not present on the system.
"
" In the case of neither docker nor hadolint executables being present, it
" really doesn't matter which we return -- either will have the effect of
" 'nope, can't use this linter!'.
function! ale_linters#dockerfile#hadolint#GetExecutable(buffer) abort
let l:use_docker = ale#Var(a:buffer, 'dockerfile_hadolint_use_docker')
" check for mandatory directives
if l:use_docker is# 'never'
return 'hadolint'
elseif l:use_docker is# 'always'
return 'docker'
endif
" if we reach here, we want to use 'hadolint' if present...
if executable('hadolint')
return 'hadolint'
endif
"... and 'docker' as a fallback.
return 'docker'
endfunction
function! ale_linters#dockerfile#hadolint#GetCommand(buffer) abort
let l:command = ale_linters#dockerfile#hadolint#GetExecutable(a:buffer)
if l:command is# 'docker'
return 'docker run --rm -i ' . ale#Var(a:buffer, 'dockerfile_hadolint_docker_image')
endif
return 'hadolint -'
endfunction
call ale#linter#Define('dockerfile', {
\ 'name': 'hadolint',
\ 'executable': function('ale_linters#dockerfile#hadolint#GetExecutable'),
\ 'command': function('ale_linters#dockerfile#hadolint#GetCommand'),
\ 'callback': 'ale_linters#dockerfile#hadolint#Handle',
\})