--- /dev/null
+" Author: Jesse Harris - https://github.com/zigford
+" Description: This file adds support for lintng powershell scripts
+" using the PSScriptAnalyzer module.
+
+" let g:ale_powershell_psscriptanalyzer_exclusions =
+" \ 'PSAvoidUsingWriteHost,PSAvoidGlobalVars'
+call ale#Set('powershell_psscriptanalyzer_exclusions', '')
+call ale#Set('powershell_psscriptanalyzer_executable', 'pwsh')
+call ale#Set('powershell_psscriptanalyzer_module',
+\ 'psscriptanalyzer')
+
+function! ale_linters#powershell#psscriptanalyzer#GetExecutable(buffer) abort
+ return ale#Var(a:buffer, 'powershell_psscriptanalyzer_executable')
+endfunction
+
+" Run Invoke-ScriptAnalyzer and output each linting message as 4 separate lines
+" for each parsing
+function! ale_linters#powershell#psscriptanalyzer#GetCommand(buffer) abort
+ let l:exclude_option = ale#Var(
+ \ a:buffer, 'powershell_psscriptanalyzer_exclusions')
+ let l:module = ale#Var(
+ \ a:buffer, 'powershell_psscriptanalyzer_module')
+ let l:script = ['Param($Script);
+ \ Invoke-ScriptAnalyzer "$Script" '
+ \ . (!empty(l:exclude_option) ? '-Exclude ' . l:exclude_option : '')
+ \ . '| ForEach-Object {
+ \ $_.Line;
+ \ $_.Severity;
+ \ $_.Message;
+ \ $_.RuleName}']
+
+ return ale#powershell#RunPowerShell(
+ \ a:buffer,
+ \ 'powershell_psscriptanalyzer',
+ \ l:script)
+endfunction
+
+" add every 4 lines to an item(Dict) and every item to a list
+" return the list
+function! ale_linters#powershell#psscriptanalyzer#Handle(buffer, lines) abort
+ let l:output = []
+ let l:lcount = 0
+
+ for l:line in a:lines
+ if l:lcount is# 0
+ " the very first line
+ let l:item = {'lnum': str2nr(l:line)}
+ elseif l:lcount is# 1
+ if l:line is# 'Error'
+ let l:item['type'] = 'E'
+ elseif l:line is# 'Information'
+ let l:item['type'] = 'I'
+ else
+ let l:item['type'] = 'W'
+ endif
+ elseif l:lcount is# 2
+ let l:item['text'] = l:line
+ elseif l:lcount is# 3
+ let l:item['code'] = l:line
+ call add(l:output, l:item)
+ let l:lcount = -1
+ endif
+
+ let l:lcount = l:lcount + 1
+ endfor
+
+ return l:output
+endfunction
+
+call ale#linter#Define('powershell', {
+\ 'name': 'psscriptanalyzer',
+\ 'executable': function('ale_linters#powershell#psscriptanalyzer#GetExecutable'),
+\ 'command': function('ale_linters#powershell#psscriptanalyzer#GetCommand'),
+\ 'output_stream': 'stdout',
+\ 'callback': 'ale_linters#powershell#psscriptanalyzer#Handle',
+\})