| Bram Moolenaar | 446cb83 | 2008-06-24 21:56:24 +0000 | [diff] [blame] | 1 | " Vim filetype plugin file |
| 2 | " Language: PDF |
| 3 | " Maintainer: Tim Pope <vimNOSPAM@tpope.info> |
| 4 | " Last Change: 2007 Dec 16 |
| 5 | |
| 6 | if exists("b:did_ftplugin") |
| 7 | finish |
| 8 | endif |
| 9 | let b:did_ftplugin = 1 |
| 10 | |
| 11 | setlocal commentstring=%%s |
| 12 | setlocal comments=:% |
| 13 | let b:undo_ftplugin = "setlocal cms< com< | unlet! b:match_words" |
| 14 | |
| 15 | if exists("g:loaded_matchit") |
| 16 | let b:match_words = '\<\%(\d\+\s\+\d\+\s\+\)obj\>:\<endobj\>,\<stream$:\<endstream\>,\<xref\>:\<trailer\>,<<:>>' |
| 17 | endif |
| 18 | |
| 19 | if exists("g:no_plugin_maps") || exists("g:no_pdf_maps") || v:version < 700 |
| 20 | finish |
| 21 | endif |
| 22 | |
| 23 | if !exists("b:pdf_tagstack") |
| 24 | let b:pdf_tagstack = [] |
| 25 | endif |
| 26 | |
| 27 | let b:undo_ftplugin .= " | silent! nunmap <buffer> <C-]> | silent! nunmap <buffer> <C-T>" |
| 28 | nnoremap <silent><buffer> <C-]> :call <SID>Tag()<CR> |
| 29 | " Inline, so the error from an empty tag stack will be simple. |
| 30 | nnoremap <silent><buffer> <C-T> :if len(b:pdf_tagstack) > 0 <Bar> call setpos('.',remove(b:pdf_tagstack, -1)) <Bar> else <Bar> exe "norm! \<Lt>C-T>" <Bar> endif<CR> |
| 31 | |
| 32 | function! s:Tag() |
| 33 | call add(b:pdf_tagstack,getpos('.')) |
| 34 | if getline('.') =~ '^\d\+$' && getline(line('.')-1) == 'startxref' |
| 35 | return s:dodigits(getline('.')) |
| 36 | elseif getline('.') =~ '/Prev\s\+\d\+\>\%(\s\+\d\)\@!' && expand("<cword>") =~ '^\d\+$' |
| 37 | return s:dodigits(expand("<cword>")) |
| 38 | elseif getline('.') =~ '^\d\{10\} \d\{5\} ' |
| 39 | return s:dodigits(matchstr(getline('.'),'^\d\+')) |
| 40 | else |
| 41 | let line = getline(".") |
| 42 | let lastend = 0 |
| 43 | let pat = '\<\d\+\s\+\d\+\s\+R\>' |
| 44 | while lastend >= 0 |
| 45 | let beg = match(line,'\C'.pat,lastend) |
| 46 | let end = matchend(line,'\C'.pat,lastend) |
| 47 | if beg < col(".") && end >= col(".") |
| 48 | return s:doobject(matchstr(line,'\C'.pat,lastend)) |
| 49 | endif |
| 50 | let lastend = end |
| 51 | endwhile |
| 52 | return s:notag() |
| 53 | endif |
| 54 | endfunction |
| 55 | |
| 56 | function! s:doobject(string) |
| 57 | let first = matchstr(a:string,'^\s*\zs\d\+') |
| 58 | let second = matchstr(a:string,'^\s*\d\+\s\+\zs\d\+') |
| 59 | norm! m' |
| 60 | if first != '' && second != '' |
| 61 | let oldline = line('.') |
| 62 | let oldcol = col('.') |
| 63 | 1 |
| 64 | if !search('^\s*'.first.'\s\+'.second.'\s\+obj\>') |
| 65 | exe oldline |
| 66 | exe 'norm! '.oldcol.'|' |
| 67 | return s:notag() |
| 68 | endif |
| 69 | endif |
| 70 | endfunction |
| 71 | |
| 72 | function! s:dodigits(digits) |
| 73 | let digits = 0 + substitute(a:digits,'^0*','','') |
| 74 | norm! m' |
| 75 | if digits <= 0 |
| 76 | norm! 1go |
| 77 | else |
| 78 | " Go one character before the destination and advance. This method |
| 79 | " lands us after a newline rather than before, if that is our target. |
| 80 | exe "goto ".(digits)."|norm! 1 " |
| 81 | endif |
| 82 | endfunction |
| 83 | |
| 84 | function! s:notag() |
| 85 | silent! call remove(b:pdf_tagstack,-1) |
| 86 | echohl ErrorMsg |
| 87 | echo "E426: tag not found" |
| 88 | echohl NONE |
| 89 | endfunction |