vimtex/autoload/latex/toc.vim
2014-07-09 12:13:26 +02:00

177 lines
4.2 KiB
VimL

" {{{1 latex#toc#init
function! latex#toc#init(initialized)
if g:latex_mappings_enabled && g:latex_toc_enabled
nnoremap <silent><buffer> <LocalLeader>lt :call latex#toc#open()<cr>
nnoremap <silent><buffer> <LocalLeader>lT :call latex#toc#toggle()<cr>
endif
endfunction
" {{{1 latex#toc#open
function! latex#toc#open()
" Go to TOC if it already exists
let winnr = bufwinnr(bufnr('LaTeX TOC'))
if winnr >= 0
silent execute winnr . 'wincmd w'
return
endif
" Store current buffer number and position
let calling_buf = bufnr('%')
let calling_file = expand('%:p')
let calling_line = line('.')
" Parse tex files for TOC data
let toc = s:parse_file(g:latex#data[b:latex.id].tex, 1)
" Resize vim session if wanted, then create TOC window
if g:latex_toc_resize
silent exe "set columns+=" . g:latex_toc_width
endif
silent exe g:latex_toc_split_side g:latex_toc_width . 'vnew LaTeX\ TOC'
" Set buffer local variables
let b:toc = toc
let b:toc_numbers = 1
let b:calling_win = bufwinnr(calling_buf)
" Add TOC entries (keep track of closest index)
let index = 0
let closest_index = 0
for entry in toc
call append('$', entry.number . "\t" . entry.title)
let index += 1
if closest_index == 0
if calling_file == entry.file && calling_line > entry.line
let closest_index = index
endif
endif
endfor
" Add help info (if desired)
if !g:latex_toc_hide_help
call append('$', "")
call append('$', "<Esc>/q: close")
call append('$', "<Space>: jump")
call append('$', "<Enter>: jump and close")
call append('$', "s: hide numbering")
endif
" Delete empty first line and jump to the closest section
0delete _
call setpos('.', [0, closest_index, 0, 0])
" Set filetype and lock buffer
setlocal filetype=latextoc
setlocal nomodifiable
endfunction
" {{{1 latex#toc#toggle
function! latex#toc#toggle()
if bufwinnr(bufnr('LaTeX TOC')) >= 0
if g:latex_toc_resize
silent exe "set columns-=" . g:latex_toc_width
endif
silent execute 'bwipeout' . bufnr('LaTeX TOC')
else
call latex#toc#open()
silent execute 'wincmd w'
endif
endfunction
" }}}1
" {{{1 s:parse_file
function! s:parse_file(file, ...)
" Parses tex file for TOC entries
"
" The function returns a list of entries. Each entry is a dictionary:
"
" entry = {
" title : "Some title",
" number : "3.1.2",
" file : /path/to/file.tex,
" line : 142,
" }
" Test if file is readable
if ! filereadable(a:file)
echoerr "Error in latex#toc s:parse_file:"
echoerr "File not readable: " . a:file
return []
endif
" Set limits for TOC numbering (only for the first call)
if a:0 > 0
let s:number = {}
endif
let toc = []
let lnum = 0
for line in readfile(a:file)
let lnum += 1
" 1. Parse inputs or includes
if line =~# s:re_input
call extend(toc, s:parse_file(s:parse_line_input(line)))
continue
endif
" 2. Parse chapters, sections, and subsections
if line =~# s:re_sec
call add(toc, s:parse_line_sec(a:file, lnum, line))
continue
endif
endfor
return toc
endfunction
"}}}1
" {{{1 s:parse_line_input
let s:re_input = '\v^\s*\\%(input|include)\s*\{'
let s:re_input_file = s:re_input . '\zs[^\}]+\ze}'
function! s:parse_line_input(line)
let l:file = matchstr(a:line, s:re_input_file)
if l:file !~# '.tex$'
let l:file .= '.tex'
endif
return fnamemodify(l:file, ':p')
endfunction
" }}}1
" {{{1 s:parse_line_sec
let s:re_sec = '\v^\s*\\%(chapter|%(sub)*section)\*?\s*\{'
let s:re_sec_level = '\v^\s*\\\zs%(chapter|%(sub)*section)\*?'
let s:re_sec_title = s:re_sec . '\zs.{-}\ze\}?$'
function! s:parse_line_sec(file, lnum, line)
let title = matchstr(a:line, s:re_sec_title)
let level = matchstr(a:line, s:re_sec_level)
return {
\ 'title' : title,
\ 'number' : s:get_number(level),
\ 'file' : a:file,
\ 'line' : a:lnum,
\ }
endfunction
function! s:get_number(level)
if a:level =~# '\v%(part|chapter|(sub)*section)$'
if has_key(s:number, a:level)
let s:number.a:level += 1
else
let s:number.a:level = 1
endif
else
return ''
endif
return PP(s:number)
endfunction
" }}}1
" vim: fdm=marker