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" Test for URLs in help documents.
"
" Opens a new window with all found URLS followed by return code from curl
" (anything other than 0 means unreachable)
"
" Written by Christian Brabandt.
func Test_check_URLs()
"20.10.23, added by Restorer
if has("win32")
let s:outdev = 'nul'
else
let s:outdev = '/dev/null'
endif
" Restorer: For Windows users. If "curl" or "weget" is installed on the system
" but not in %PATH%, add the full routes for them to this environment variable.
if executable('curl')
" Note: does not follow redirects!
let s:command1 = 'curl --silent --fail --output ' ..s:outdev.. ' --head '
let s:command2 = ""
elseif executable('wget')
" Note: only allow a couple of redirects
let s:command1 = 'wget --quiet -S --spider --max-redirect=2 --timeout=5 --tries=2 -O ' ..s:outdev.. ' '
let s:command2 = ""
elseif has("win32") "20.10.23, added by Restorer
if executable('powershell')
if 2 == system('powershell -nologo -noprofile "$psversiontable.psversion.major"')
echoerr 'To work in OS Windows requires the program "PowerShell" version 3.0 or higher'
return
endif
let s:command1 =
\ "powershell -nologo -noprofile \"{[Net.ServicePointManager]::SecurityProtocol = 'Tls12, Tls11, Tls, Ssl3'};try{(Invoke-WebRequest -MaximumRedirection 2 -TimeoutSec 5 -Uri "
let s:command2 = ').StatusCode}catch{exit [int]$Error[0].Exception.Status}"'
endif
else
echoerr 'Only works when "curl" or "wget", or "powershell" is available'
return
endif
" Do the testing.
set report =999
set nomore shm +=s
let pat='\(https\?\|ftp\)://[^\t* ]\+'
exe 'helpgrep' pat
helpclose
let urls = map(getqflist(), 'v:val.text')
" do not use submatch(1)!
let urls = map(urls, {key, val -> matchstr(val, pat)})
" remove examples like user@host (invalid urls)
let urls = filter(urls, 'v:val !~ "@"')
" Remove example URLs which are invalid
let urls = filter(urls, {key, val -> val !~ '\<\(\(my\|some\)\?host\|machine\|hostname\|file\)\>'})
new
put =urls
" remove some more invalid items
" empty lines
"20.10.23, Restorer: '_' is a little faster, see `:h global`
v/./d _
" remove # anchors
%s/#.*$//e
" remove trailing stuff (parenthesis, dot, comma, quotes), but only for HTTP
" links
g/^h/s#[.),'"`/>][:.,]\?$##
g#^[hf]t\?tp:/\(/\?\.*\)$#d _
silent! g/ftp://,$/d _
silent! g/=$/d _
let a = getline(1,'$')
let a = uniq(sort(a))
%d _
call setline(1, a)
%s/.*/\=TestURL(submatch(0))/
" highlight the failures
/.* \([0-9]*[1-9]\|[0-9]\{2,}\)$
endfunc
func TestURL(url)
" Relies on the return code to determine whether a page is valid
echom printf("Testing URL: %d/%d %s", line('.'), line('$'), a:url)
call system(s:command1 .. shellescape(a:url) .. s:command2)
return printf("%s %d", a:url, v:shell_error)
endfunc
call Test_check_URLs()
" vim: sw=2 sts=2 et
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