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" Runs the specified healthchecks.
" Runs all discovered healthchecks if a:plugin_names is empty.
function! health#check(plugin_names) abort
let healthchecks = empty(a:plugin_names)
\ ? s:discover_healthchecks()
\ : s:get_healthcheck(a:plugin_names)
" Create buffer and open in a tab, unless this is the default buffer when Nvim starts.
let emptybuf = (bufnr('$') == 1 && empty(getline(1)) && 1 == line('$'))
execute (emptybuf ? 'buffer' : 'tab sbuffer') nvim_create_buf(v:true, v:true)
if bufexists('health://')
bwipe health://
endif
file health://
setfiletype checkhealth
if empty(healthchecks)
call setline(1, 'ERROR: No healthchecks found.')
else
redraw|echo 'Running healthchecks...'
for name in sort(keys(healthchecks))
let [func, type] = healthchecks[name]
let s:output = []
try
if func == ''
throw 'healthcheck_not_found'
endif
eval type == 'v' ? call(func, []) : luaeval(func)
" in the event the healthcheck doesn't return anything
" (the plugin author should avoid this possibility)
if len(s:output) == 0
throw 'healthcheck_no_return_value'
endif
catch
let s:output = [] " Clear the output
if v:exception =~# 'healthcheck_not_found'
call health#report_error('No healthcheck found for "'.name.'" plugin.')
elseif v:exception =~# 'healthcheck_no_return_value'
call health#report_error('The healthcheck report for "'.name.'" plugin is empty.')
else
call health#report_error(printf(
\ "Failed to run healthcheck for \"%s\" plugin. Exception:\n%s\n%s",
\ name, v:throwpoint, v:exception))
endif
endtry
let header = [repeat('=', 78), name .. ': ' .. func, '']
" remove empty line after header from report_start
let s:output = s:output[0] == '' ? s:output[1:] : s:output
let s:output = header + s:output + ['']
call append('$', s:output)
redraw
endfor
endif
" Clear the 'Running healthchecks...' message.
redraw|echo ''
endfunction
function! s:collect_output(output)
let s:output += split(a:output, "\n", 1)
endfunction
" Starts a new report.
function! health#report_start(name) abort
call s:collect_output(printf("\n%s ~", a:name))
endfunction
" Indents lines *except* line 1 of a string if it contains newlines.
function! s:indent_after_line1(s, columns) abort
let lines = split(a:s, "\n", 0)
if len(lines) < 2 " We do not indent line 1, so nothing to do.
return a:s
endif
for i in range(1, len(lines)-1) " Indent lines after the first.
let lines[i] = substitute(lines[i], '^\s*', repeat(' ', a:columns), 'g')
endfor
return join(lines, "\n")
endfunction
" Changes ':h clipboard' to ':help |clipboard|'.
function! s:help_to_link(s) abort
return substitute(a:s, '\v:h%[elp] ([^|][^"\r\n ]+)', ':help |\1|', 'g')
endfunction
" Format a message for a specific report item.
" a:1: Optional advice (string or list)
function! s:format_report_message(status, msg, ...) abort " {{{
let output = '- ' .. a:status .. (empty(a:status) ? '' : ' ') .. s:indent_after_line1(a:msg, 2)
" Optional parameters
if a:0 > 0
let advice = type(a:1) == type('') ? [a:1] : a:1
if type(advice) != type([])
throw 'a:1: expected String or List'
endif
" Report each suggestion
if !empty(advice)
let output .= "\n - ADVICE:"
for suggestion in advice
let output .= "\n - " . s:indent_after_line1(suggestion, 6)
endfor
endif
endif
return s:help_to_link(output)
endfunction " }}}
" Reports a message as a listitem in the current section.
function! health#report_info(msg) abort " {{{
call s:collect_output(s:format_report_message('', a:msg))
endfunction " }}}
" Reports a successful healthcheck.
function! health#report_ok(msg) abort " {{{
call s:collect_output(s:format_report_message('OK', a:msg))
endfunction " }}}
" Reports a health warning.
" a:1: Optional advice (string or list)
function! health#report_warn(msg, ...) abort " {{{
if a:0 > 0
call s:collect_output(s:format_report_message('WARNING', a:msg, a:1))
else
call s:collect_output(s:format_report_message('WARNING', a:msg))
endif
endfunction " }}}
" Reports a failed healthcheck.
" a:1: Optional advice (string or list)
function! health#report_error(msg, ...) abort " {{{
if a:0 > 0
call s:collect_output(s:format_report_message('ERROR', a:msg, a:1))
else
call s:collect_output(s:format_report_message('ERROR', a:msg))
endif
endfunction " }}}
" From a path return a list [{name}, {func}, {type}] representing a healthcheck
function! s:filepath_to_healthcheck(path) abort
if a:path =~# 'vim$'
let name = matchstr(a:path, '\zs[^\/]*\ze\.vim$')
let func = 'health#'.name.'#check'
let type = 'v'
else
let base_path = substitute(a:path,
\ '.*lua[\/]\(.\{-}\)[\/]health\([\/]init\)\?\.lua$',
\ '\1', '')
let name = substitute(base_path, '[\/]', '.', 'g')
let func = 'require("'.name.'.health").check()'
let type = 'l'
endif
return [name, func, type]
endfunction
function! s:discover_healthchecks() abort
return s:get_healthcheck('*')
endfunction
" Returns Dictionary {name: [func, type], ..} representing healthchecks
function! s:get_healthcheck(plugin_names) abort
let health_list = s:get_healthcheck_list(a:plugin_names)
let healthchecks = {}
for c in health_list
let normalized_name = substitute(c[0], '-', '_', 'g')
let existent = get(healthchecks, normalized_name, [])
" Prefer Lua over vim entries
if existent != [] && existent[2] == 'l'
continue
else
let healthchecks[normalized_name] = c
endif
endfor
let output = {}
for v in values(healthchecks)
let output[v[0]] = v[1:]
endfor
try
" vim.health is not a healthcheck, skip it
call remove(output, 'vim')
catch
endtry
return output
endfunction
" Returns list of lists [ [{name}, {func}, {type}] ] representing healthchecks
function! s:get_healthcheck_list(plugin_names) abort
let healthchecks = []
let plugin_names = type('') == type(a:plugin_names)
\ ? split(a:plugin_names, ' ', v:false)
\ : a:plugin_names
for p in plugin_names
" support vim/lsp/health{/init/}.lua as :checkhealth vim.lsp
let p = substitute(p, '\.', '/', 'g')
let p = substitute(p, '*$', '**', 'g') " find all submodule e.g vim*
let paths = nvim_get_runtime_file('autoload/health/'.p.'.vim', v:true)
\ + nvim_get_runtime_file('lua/**/'.p.'/health/init.lua', v:true)
\ + nvim_get_runtime_file('lua/**/'.p.'/health.lua', v:true)
if len(paths) == 0
let healthchecks += [[p, '', '']] " healthcheck not found
else
let healthchecks += map(uniq(sort(paths)),
\'<SID>filepath_to_healthcheck(v:val)')
end
endfor
return healthchecks
endfunction
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