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tutor.vim
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" vim: set fdm=marker :
" Setup: {{{1
function! tutor#SetupVim()
if has('syntax')
syntax on
endif
endfunction
" Mappings: {{{1
function! s:CheckMaps()
nmap
endfunction
function! s:MapKeyWithRedirect(key, cmd)
if maparg(a:key) != ''
redir => l:keys
silent call s:CheckMaps()
redir END
let l:key_list = split(l:keys, '\n')
let l:raw_map = filter(copy(l:key_list), "v:val =~ '\\* ".a:key."'")
if len(l:raw_map) == 0
exe "nnoremap <buffer> <expr> ".a:key." ".a:cmd
return
endif
let l:map_data = split(l:raw_map[0], '\s*')
exe "nnoremap <buffer> <expr> ".l:map_data[0]." ".a:cmd
else
exe "nnoremap <buffer> <expr> ".a:key." ".a:cmd
endif
endfunction
function! tutor#MouseDoubleClick()
if foldclosed(line('.')) > -1
normal zo
else
if match(getline('.'), '^#\{1,} ') > -1
normal zc
else
call tutor#FollowLink(0)
endif
endif
endfunction
function! tutor#InjectCommand()
let l:cmd = substitute(getline('.'), '^\s*', '', '')
exe l:cmd
redraw | echohl WarningMsg | echon "tutor: ran" | echohl None | echon " " | echohl Statement | echon l:cmd
endfunction
function! tutor#SetNormalMappings()
call s:MapKeyWithRedirect('l', 'tutor#ForwardSkipConceal(v:count1)')
call s:MapKeyWithRedirect('h', 'tutor#BackwardSkipConceal(v:count1)')
call s:MapKeyWithRedirect('<right>', 'tutor#ForwardSkipConceal(v:count1)')
call s:MapKeyWithRedirect('<left>', 'tutor#BackwardSkipConceal(v:count1)')
nnoremap <silent> <buffer> <CR> :call tutor#FollowLink(0)<cr>
nnoremap <silent> <buffer> <2-LeftMouse> :call tutor#MouseDoubleClick()<cr>
nnoremap <silent> <buffer> ? :call tutor#FollowHelp()<cr>
nnoremap <buffer> >> :call tutor#InjectCommand()<cr>
endfunction
function! tutor#SetSampleTextMappings()
noremap <silent> <buffer> A :if match(getline('.'), '^--->') > -1 \| call search('\s{\@=', 'Wc') \| startinsert \| else \| startinsert! \| endif<cr>
noremap <silent> <buffer> $ :if match(getline('.'), '^--->') > -1 \| call search('.\s{\@=', 'Wc') \| else \| call search('$', 'Wc') \| endif<cr>
onoremap <silent> <buffer> $ :if match(getline('.'), '^--->') > -1 \| call search('.\s{\@=', 'Wc') \| else \| call search('$', 'Wc') \| endif<cr>
noremap <silent> <buffer> ^ :if match(getline('.'), '^--->') > -1 \| call search('\(--->\s\)\@<=.', 'bcW') \| else \| call search('^', 'bcW') \|endif<cr>
onoremap <silent> <buffer> ^ :if match(getline('.'), '^--->') > -1 \| call search('\(--->\s\)\@<=.', 'bcW') \| else \| call search('^', 'bcW') \|endif<cr>
nmap <silent> <buffer> 0 ^<esc>
nmap <silent> <buffer> <Home> ^<esc>
nmap <silent> <buffer> <End> $
imap <silent> <buffer> <Home> <esc>^<esc>:startinsert<cr>
imap <silent> <buffer> <End> <esc>$:startinsert<cr>
noremap <silent> <buffer> I :exe "normal 0" \| startinsert<cr>
endfunction
" Navigation: {{{1
" taken from http://stackoverflow.com/a/24224578
function! tutor#ForwardSkipConceal(count)
let cnt=a:count
let mvcnt=0
let c=col('.')
let l=line('.')
let lc=col('$')
let line=getline('.')
while cnt
if c>=lc
let mvcnt+=cnt
break
endif
if stridx(&concealcursor, 'n')==-1
let isconcealed=0
else
let [isconcealed, cchar, group] = synconcealed(l, c)
endif
if isconcealed
let cnt-=strchars(cchar)
let oldc=c
let c+=1
while c < lc
let [isconcealed2, cchar2, group2] = synconcealed(l, c)
if !isconcealed2 || cchar2 != cchar
break
endif
let c+= 1
endwhile
let mvcnt+=strchars(line[oldc-1:c-2])
else
let cnt-=1
let mvcnt+=1
let c+=len(matchstr(line[c-1:], '.'))
endif
endwhile
return mvcnt.'l'
endfunction
function! tutor#BackwardSkipConceal(count)
let cnt=a:count
let mvcnt=0
let c=col('.')
let l=line('.')
let lc=0
let line=getline('.')
while cnt
if c<=1
let mvcnt+=cnt
break
endif
if stridx(&concealcursor, 'n')==-1 || c == 0
let isconcealed=0
else
let [isconcealed, cchar, group]=synconcealed(l, c-1)
endif
if isconcealed
let cnt-=strchars(cchar)
let oldc=c
let c-=1
while c>1
let [isconcealed2, cchar2, group2] = synconcealed(l, c-1)
if !isconcealed2 || cchar2 != cchar
break
endif
let c-=1
endwhile
let c = max([c, 1])
let mvcnt+=strchars(line[c-1:oldc-2])
else
let cnt-=1
let mvcnt+=1
let c-=len(matchstr(line[:c-2], '.$'))
endif
endwhile
return mvcnt.'h'
endfunction
" Hypertext: {{{1
function! tutor#FollowLink(force)
let l:stack_s = join(map(synstack(line('.'), col('.')), 'synIDattr(v:val, "name")'), '')
if l:stack_s =~ 'tutorLink'
let l:link_start = searchpairpos('\[', '', ')', 'nbcW')
let l:link_end = searchpairpos('\[', '', ')', 'ncW')
if l:link_start[0] == l:link_end[0]
let l:linkData = getline(l:link_start[0])[l:link_start[1]-1:l:link_end[1]-1]
else
return
endif
let l:target = matchstr(l:linkData, '(\@<=.*)\@=')
if a:force != 1 && match(l:target, '\*.\+\*') > -1
call cursor(l:link_start[0], l:link_end[1])
call search(l:target, '')
normal ^
elseif a:force != 1 && match(l:target, '^@tutor:') > -1
let l:tutor = matchstr(l:target, '@tutor:\zs.*')
exe "Tutor ".l:tutor
else
exe "help ".l:target
noremap <silent> <buffer> q :close<cr>
endif
endif
endfunction
function! tutor#FollowHelp()
if synIDattr(synID(line('.'), col('.'), 0), 'name') == 'tutorLink'
call tutor#FollowLink(1)
else
exe "help " .expand('<cWORD>')
noremap <silent> <buffer> q :close<cr>
endif
endfunction
" Folding And Info: {{{1
function! tutor#TutorFolds()
if getline(v:lnum) =~ '^#\{1,6}'
return ">". len(matchstr(getline(v:lnum), '^#\{1,6}'))
else
return "="
endif
endfunction
function! tutor#InfoText()
let l:info_parts = []
if exists('b:tutor_infofunc')
call add(l:info_parts, eval(b:tutor_infofunc.'()'))
endif
call add(l:info_parts, mode())
return join(l:info_parts, " ")
endfunction
" Marks {{{1
function! tutor#PlaceXMarks()
call cursor(1, 1)
let b:tutor_sign_id = 1
while search('^--->', 'W') > 0
call tutor#CheckText(getline('.'))
let b:tutor_sign_id+=1
endwhile
call cursor(1, 1)
endfunction
function! tutor#CheckText(text)
if match(a:text, '{expect:NULL}\s*$') == -1
if match(getline('.'), '|expect:.\+|') == -1
let l:cur_text = matchstr(a:text, '---> \zs.\{-}\ze {expect:')
let l:expected_text = matchstr(a:text, '{expect:\zs.*\ze}\s*$')
else
let l:cur_text = matchstr(a:text, '---> \zs.\{-}\ze |expect:')
let l:expected_text = matchstr(a:text, '|expect:\zs.*\ze|\s*$')
endif
if l:cur_text ==# l:expected_text
exe "sign place ".b:tutor_sign_id." line=".line('.')." name=tutorok buffer=".bufnr('%')
else
exe "sign place ".b:tutor_sign_id." line=".line('.')." name=tutorbad buffer=".bufnr('%')
endif
endif
endfunction
function! tutor#OnTextChanged()
let l:text = getline('.')
if match(l:text, '^--->') > -1
call tutor#CheckText(l:text)
endif
endfunction
" Tutor Cmd: {{{1
function! tutor#TutorCmd(tutor_name)
if v:version >= 704
let l:tutors = globpath(&rtp, 'tutorials/'.a:tutor_name.'.tutor', 0, 1)
else
let l:tutors = split(globpath(&rtp, 'tutorials/'.a:tutor_name.'.tutor', 0), '\n')
endif
if len(l:tutors) == 1
exe "edit ".l:tutors[0]
else
let l:idx = 0
let l:candidates = ['Several tutorials with that name found. Select one:']
for candidate in map(l:tutors, 'fnamemodify(v:val, ":h:h:t")."/".fnamemodify(v:val, ":t")')
let l:idx += 1
call add(l:candidates, l:idx.'. '.candidate)
endfor
let l:tutor_to_open = inputlist(l:candidates)
exe "edit ".substitute(l:candidates[l:tutor_to_open], '^\d\+. ', '', '')
endif
endfunction
function! tutor#TutorCmdComplete(lead,line,pos)
if v:version >= 704
let l:tutors = globpath(&rtp, 'tutorials/*.tutor', 0, 1)
else
let l:tutors = split(globpath(&rtp, 'tutorials/*.tutor', 0), '\n')
endif
let l:names = uniq(sort(map(l:tutors, 'fnamemodify(v:val, ":t:r")')))
return join(l:names, "\n")
endfunction