90 lines
2.6 KiB
VimL
90 lines
2.6 KiB
VimL
" Vim filetype plugin file
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" Language: PDF
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" Maintainer: Tim Pope <vimNOSPAM@tpope.info>
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" Last Change: 2007 Dec 16
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if exists("b:did_ftplugin")
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finish
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endif
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let b:did_ftplugin = 1
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setlocal commentstring=%%s
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setlocal comments=:%
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let b:undo_ftplugin = "setlocal cms< com< | unlet! b:match_words"
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if exists("g:loaded_matchit")
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let b:match_words = '\<\%(\d\+\s\+\d\+\s\+\)obj\>:\<endobj\>,\<stream$:\<endstream\>,\<xref\>:\<trailer\>,<<:>>'
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endif
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if exists("g:no_plugin_maps") || exists("g:no_pdf_maps") || v:version < 700
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finish
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endif
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if !exists("b:pdf_tagstack")
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let b:pdf_tagstack = []
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endif
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let b:undo_ftplugin .= " | silent! nunmap <buffer> <C-]> | silent! nunmap <buffer> <C-T>"
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nnoremap <silent><buffer> <C-]> :call <SID>Tag()<CR>
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" Inline, so the error from an empty tag stack will be simple.
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nnoremap <silent><buffer> <C-T> :if len(b:pdf_tagstack) > 0 <Bar> call setpos('.',remove(b:pdf_tagstack, -1)) <Bar> else <Bar> exe "norm! \<Lt>C-T>" <Bar> endif<CR>
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function! s:Tag()
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call add(b:pdf_tagstack,getpos('.'))
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if getline('.') =~ '^\d\+$' && getline(line('.')-1) == 'startxref'
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return s:dodigits(getline('.'))
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elseif getline('.') =~ '/Prev\s\+\d\+\>\%(\s\+\d\)\@!' && expand("<cword>") =~ '^\d\+$'
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return s:dodigits(expand("<cword>"))
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elseif getline('.') =~ '^\d\{10\} \d\{5\} '
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return s:dodigits(matchstr(getline('.'),'^\d\+'))
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else
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let line = getline(".")
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let lastend = 0
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let pat = '\<\d\+\s\+\d\+\s\+R\>'
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while lastend >= 0
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let beg = match(line,'\C'.pat,lastend)
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let end = matchend(line,'\C'.pat,lastend)
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if beg < col(".") && end >= col(".")
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return s:doobject(matchstr(line,'\C'.pat,lastend))
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endif
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let lastend = end
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endwhile
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return s:notag()
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endif
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endfunction
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function! s:doobject(string)
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let first = matchstr(a:string,'^\s*\zs\d\+')
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let second = matchstr(a:string,'^\s*\d\+\s\+\zs\d\+')
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norm! m'
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if first != '' && second != ''
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let oldline = line('.')
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let oldcol = col('.')
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1
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if !search('^\s*'.first.'\s\+'.second.'\s\+obj\>')
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exe oldline
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exe 'norm! '.oldcol.'|'
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return s:notag()
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endif
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endif
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endfunction
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function! s:dodigits(digits)
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let digits = 0 + substitute(a:digits,'^0*','','')
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norm! m'
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if digits <= 0
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norm! 1go
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else
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" Go one character before the destination and advance. This method
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" lands us after a newline rather than before, if that is our target.
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exe "goto ".(digits)."|norm! 1 "
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endif
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endfunction
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function! s:notag()
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silent! call remove(b:pdf_tagstack,-1)
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echohl ErrorMsg
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echo "E426: tag not found"
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echohl NONE
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endfunction
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