109 lines
3.6 KiB
VimL
109 lines
3.6 KiB
VimL
" Author: w0rp <devw0rp@gmail.com>
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" Description: Functions for integrating with Python linters.
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let s:sep = has('win32') ? '\' : '/'
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" bin is used for Unix virtualenv directories, and Scripts is for Windows.
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let s:bin_dir = has('unix') ? 'bin' : 'Scripts'
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let g:ale_virtualenv_dir_names = get(g:, 'ale_virtualenv_dir_names', [
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\ '.env',
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\ '.venv',
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\ 'env',
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\ 've-py3',
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\ 've',
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\ 'virtualenv',
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\ 'venv',
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\])
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function! ale#python#FindProjectRootIni(buffer) abort
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for l:path in ale#path#Upwards(expand('#' . a:buffer . ':p:h'))
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" If you change this, update ale-python-root documentation.
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if filereadable(l:path . '/MANIFEST.in')
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\|| filereadable(l:path . '/setup.cfg')
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\|| filereadable(l:path . '/pytest.ini')
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\|| filereadable(l:path . '/tox.ini')
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\|| filereadable(l:path . '/mypy.ini')
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\|| filereadable(l:path . '/pycodestyle.cfg')
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\|| filereadable(l:path . '/flake8.cfg')
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\|| filereadable(l:path . '/Pipfile')
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\|| filereadable(l:path . '/Pipfile.lock')
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return l:path
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endif
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endfor
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return ''
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endfunction
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" Given a buffer number, find the project root directory for Python.
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" The root directory is defined as the first directory found while searching
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" upwards through paths, including the current directory, until a path
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" containing an init file (one from MANIFEST.in, setup.cfg, pytest.ini,
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" tox.ini) is found. If it is not possible to find the project root directory
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" via init file, then it will be defined as the first directory found
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" searching upwards through paths, including the current directory, until no
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" __init__.py files is found.
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function! ale#python#FindProjectRoot(buffer) abort
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let l:ini_root = ale#python#FindProjectRootIni(a:buffer)
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if !empty(l:ini_root)
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return l:ini_root
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endif
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for l:path in ale#path#Upwards(expand('#' . a:buffer . ':p:h'))
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if !filereadable(l:path . '/__init__.py')
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return l:path
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endif
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endfor
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return ''
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endfunction
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" Given a buffer number, find a virtualenv path for Python.
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function! ale#python#FindVirtualenv(buffer) abort
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for l:path in ale#path#Upwards(expand('#' . a:buffer . ':p:h'))
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" Skip empty path components returned in MSYS.
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if empty(l:path)
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continue
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endif
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for l:dirname in ale#Var(a:buffer, 'virtualenv_dir_names')
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let l:venv_dir = ale#path#Simplify(
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\ join([l:path, l:dirname], s:sep)
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\)
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let l:script_filename = ale#path#Simplify(
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\ join([l:venv_dir, s:bin_dir, 'activate'], s:sep)
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\)
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if filereadable(l:script_filename)
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return l:venv_dir
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endif
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endfor
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endfor
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return $VIRTUAL_ENV
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endfunction
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" Given a buffer number and a command name, find the path to the executable.
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" First search on a virtualenv for Python, if nothing is found, try the global
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" command. Returns an empty string if cannot find the executable
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function! ale#python#FindExecutable(buffer, base_var_name, path_list) abort
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if ale#Var(a:buffer, a:base_var_name . '_use_global')
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return ale#Var(a:buffer, a:base_var_name . '_executable')
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endif
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let l:virtualenv = ale#python#FindVirtualenv(a:buffer)
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if !empty(l:virtualenv)
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for l:path in a:path_list
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let l:ve_executable = ale#path#Simplify(
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\ join([l:virtualenv, s:bin_dir, l:path], s:sep)
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\)
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if executable(l:ve_executable)
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return l:ve_executable
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endif
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endfor
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endif
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return ale#Var(a:buffer, a:base_var_name . '_executable')
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endfunction
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