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ale/ale_linters/python/pycodestyle.vim
Eddie Lebow 56e67c5811 Add python_[linter]_auto_pipenv options for python linters (fixes #1656)
When set to true, and the buffer is currently inside a pipenv,
GetExecutable will return "pipenv", which will trigger the existing
functionality to append the correct pipenv arguments to run each linter.

Defaults to false.

I was going to implement ale#python#PipenvPresent by invoking
`pipenv --venv` or `pipenv --where`, but it seemed to be abominably
slow, even to the point where the test suite wasn't even finishing
("Tried to run tests 3 times"). The diff is:

diff --git a/autoload/ale/python.vim b/autoload/ale/python.vim
index 7baae079..8c100d41 100644
--- a/autoload/ale/python.vim
+++ b/autoload/ale/python.vim
@@ -106,5 +106,9 @@ endfunction

" Detects whether a pipenv environment is present.
function! ale#python#PipenvPresent(buffer) abort
-    return findfile('Pipfile.lock', expand('#' . a:buffer . ':p:h') . ';') isnot# ''
+    let l:cd_string = ale#path#BufferCdString(a:buffer)
+    let l:output = systemlist(l:cd_string . 'pipenv --where')[0]
+    " `pipenv --where` returns the path to the dir containing the Pipfile
+    " if in a pipenv, or some error text otherwise.
+    return strpart(l:output, 0, 18) !=# "No Pipfile present"
 endfunction

Using vim's `findfile` is much faster, behaves correctly in the majority
of situations, and also works reliably when the `pipenv` command doesn't
exist.
2018-09-15 22:10:46 -04:00

74 lines
2.5 KiB
VimL

" Author: Michael Thiesen <micthiesen@gmail.com>
" Description: pycodestyle linting for python files
call ale#Set('python_pycodestyle_executable', 'pycodestyle')
call ale#Set('python_pycodestyle_options', '')
call ale#Set('python_pycodestyle_use_global', get(g:, 'ale_use_global_executables', 0))
call ale#Set('python_pycodestyle_auto_pipenv', 0)
function! ale_linters#python#pycodestyle#GetExecutable(buffer) abort
if ale#Var(a:buffer, 'python_pycodestyle_auto_pipenv') && ale#python#PipenvPresent(a:buffer)
return 'pipenv'
endif
return ale#python#FindExecutable(a:buffer, 'python_pycodestyle', ['pycodestyle'])
endfunction
function! ale_linters#python#pycodestyle#GetCommand(buffer) abort
let l:executable = ale_linters#python#pycodestyle#GetExecutable(a:buffer)
let l:exec_args = l:executable =~? 'pipenv$'
\ ? ' run pycodestyle'
\ : ''
return ale#Escape(l:executable) . l:exec_args
\ . ' '
\ . ale#Var(a:buffer, 'python_pycodestyle_options')
\ . ' -'
endfunction
function! ale_linters#python#pycodestyle#Handle(buffer, lines) abort
let l:pattern = '\v^(\S*):(\d*):(\d*): ([EW]\d+) (.*)$'
let l:output = []
" lines are formatted as follows:
" file.py:21:26: W291 trailing whitespace
for l:match in ale#util#GetMatches(a:lines, l:pattern)
if(l:match[4] is# 'W291' || l:match[4] is# 'W293')
\&& !ale#Var(a:buffer, 'warn_about_trailing_whitespace')
" Skip warnings for trailing whitespace if the option is off.
continue
endif
if l:match[4] is# 'W391'
\&& !ale#Var(a:buffer, 'warn_about_trailing_blank_lines')
" Skip warnings for trailing blank lines if the option is off
continue
endif
let l:item = {
\ 'lnum': l:match[2] + 0,
\ 'col': l:match[3] + 0,
\ 'type': l:match[4][0],
\ 'sub_type': 'style',
\ 'text': l:match[5],
\ 'code': l:match[4],
\}
" E999 and E112 are syntax errors.
if l:match[4] is# 'E999' || l:match[4] is# 'E112'
unlet l:item.sub_type
endif
call add(l:output, l:item)
endfor
return l:output
endfunction
call ale#linter#Define('python', {
\ 'name': 'pycodestyle',
\ 'executable_callback': 'ale_linters#python#pycodestyle#GetExecutable',
\ 'command_callback': 'ale_linters#python#pycodestyle#GetCommand',
\ 'callback': 'ale_linters#python#pycodestyle#Handle',
\})