5a3cfbbdf5
* Add documentation for hadolint (doc/ale-hadolint.txt) * Allow `hadolint` linter to run via docker image These changes enable the `hadolint` linter to run via the author's docker image, if present. Three modes are supported: * never use docker; * always use docker; and * use docker as a failback.
78 lines
2.4 KiB
VimL
78 lines
2.4 KiB
VimL
" Author: hauleth - https://github.com/hauleth
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" always, yes, never
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call ale#Set('dockerfile_hadolint_use_docker', 'never')
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call ale#Set('dockerfile_hadolint_docker_image', 'lukasmartinelli/hadolint')
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function! ale_linters#dockerfile#hadolint#Handle(buffer, lines) abort
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" Matches patterns line the following:
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"
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" stdin:19: F: Pipe chain should start with a raw value.
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let l:pattern = '\v^/dev/stdin:?(\d+)? (\S+) (.+)$'
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let l:output = []
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for l:match in ale#util#GetMatches(a:lines, l:pattern)
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let l:lnum = 0
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if l:match[1] !=# ''
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let l:lnum = l:match[1] + 0
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endif
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let l:type = 'W'
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let l:text = l:match[3]
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call add(l:output, {
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\ 'lnum': l:lnum,
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\ 'col': 0,
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\ 'type': l:type,
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\ 'text': l:text,
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\ 'nr': l:match[2],
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\})
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endfor
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return l:output
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endfunction
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" This is a little different than the typical 'executable' callback. We want
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" to afford the user the chance to say always use docker, never use docker,
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" and use docker if the hadolint executable is not present on the system.
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"
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" In the case of neither docker nor hadolint executables being present, it
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" really doesn't matter which we return -- either will have the effect of
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" 'nope, can't use this linter!'.
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function! ale_linters#dockerfile#hadolint#GetExecutable(buffer) abort
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let l:use_docker = ale#Var(a:buffer, 'dockerfile_hadolint_use_docker')
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" check for mandatory directives
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if l:use_docker ==# 'never'
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return 'hadolint'
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elseif l:use_docker ==# 'always'
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return 'docker'
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endif
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" if we reach here, we want to use 'hadolint' if present...
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if executable('hadolint')
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return 'hadolint'
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endif
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"... and 'docker' as a fallback.
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return 'docker'
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endfunction
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function! ale_linters#dockerfile#hadolint#GetCommand(buffer) abort
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let l:command = ale_linters#dockerfile#hadolint#GetExecutable(a:buffer)
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if l:command ==# 'docker'
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return 'docker run --rm -i ' . ale#Var(a:buffer, 'dockerfile_hadolint_docker_image')
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endif
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return 'hadolint -'
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endfunction
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call ale#linter#Define('dockerfile', {
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\ 'name': 'hadolint',
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\ 'executable_callback': 'ale_linters#dockerfile#hadolint#GetExecutable',
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\ 'command_callback': 'ale_linters#dockerfile#hadolint#GetCommand',
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\ 'callback': 'ale_linters#dockerfile#hadolint#Handle',
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\})
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