mirror of
https://github.com/neovim/neovim.git
synced 2024-12-25 05:35:10 -07:00
138 lines
3.5 KiB
VimL
138 lines
3.5 KiB
VimL
let s:man_tag_depth = 0
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let s:man_sect_arg = ''
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let s:man_find_arg = '-w'
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try
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if !has('win32') && $OSTYPE !~? 'cygwin\|linux' && system('uname -s') =~? 'SunOS' && system('uname -r') =~? '^5'
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let s:man_sect_arg = '-s'
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let s:man_find_arg = '-l'
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endif
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catch /E145:/
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" Ignore the error in restricted mode
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endtry
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" Load man page {page} from {section}
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" call man#get_page([{section}, ]{page})
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function man#get_page(...) abort
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let invoked_from_man = (&filetype ==# 'man')
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if a:0 == 0
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echoerr 'argument required'
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return
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elseif a:0 > 2
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echoerr 'too many arguments'
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return
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endif
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let sect = get(a:000, 0)
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let page = get(a:000, 1, sect)
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let [page, sect] = s:parse_page_and_section(sect, page)
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if !empty(sect) && s:find_page(sect, page) == 0
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let sect = ''
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endif
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if s:find_page(sect, page) == 0
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echo 'No manual entry for '.page
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return
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endif
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exec 'let s:man_tag_buf_'.s:man_tag_depth.' = '.bufnr('%')
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exec 'let s:man_tag_lin_'.s:man_tag_depth.' = '.line('.')
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exec 'let s:man_tag_col_'.s:man_tag_depth.' = '.col('.')
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let s:man_tag_depth = s:man_tag_depth + 1
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let editcmd = 'edit'
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" Use an existing 'man' window, else open a new one.
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if &filetype !=# 'man'
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let thiswin = winnr()
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wincmd b
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if winnr() > 1
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exec thiswin . 'wincmd w'
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while 1
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if &filetype ==# 'man'
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break
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endif
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wincmd w
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if thiswin == winnr()
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break
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endif
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endwhile
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endif
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if &filetype !=# 'man'
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let editcmd = 'tabnew'
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endif
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endif
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silent exec editcmd.' man://'.page.(empty(sect)?'':'('.sect.')')
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setlocal modifiable
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silent keepjumps norm! 1G"_dG
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if empty($MANWIDTH)
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let $MANWIDTH = winwidth(0)
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endif
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silent exec 'r!/usr/bin/man '.s:cmd(sect, page).' | col -b'
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" Remove blank lines from top and bottom.
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while getline(1) =~# '^\s*$'
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silent keepjumps 1delete _
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endwhile
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while getline('$') =~# '^\s*$'
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silent keepjumps $delete _
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endwhile
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setlocal nomodified
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setlocal filetype=man
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if invoked_from_man || editcmd ==# 'tabnew'
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call s:set_window_local_options()
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endif
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endfunction
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function s:set_window_local_options() abort
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setlocal colorcolumn=0 foldcolumn=0 nonumber
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setlocal nolist norelativenumber nofoldenable
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endfunction
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function man#pop_page() abort
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if s:man_tag_depth > 0
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let s:man_tag_depth = s:man_tag_depth - 1
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exec "let s:man_tag_buf=s:man_tag_buf_".s:man_tag_depth
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exec "let s:man_tag_lin=s:man_tag_lin_".s:man_tag_depth
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exec "let s:man_tag_col=s:man_tag_col_".s:man_tag_depth
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exec s:man_tag_buf."b"
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exec s:man_tag_lin
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exec "norm! ".s:man_tag_col."|"
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exec "unlet s:man_tag_buf_".s:man_tag_depth
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exec "unlet s:man_tag_lin_".s:man_tag_depth
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exec "unlet s:man_tag_col_".s:man_tag_depth
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unlet s:man_tag_buf s:man_tag_lin s:man_tag_col
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endif
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endfunction
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" Expects a string like 'access' or 'access(2)'.
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function s:parse_page_and_section(sect, str) abort
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try
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let [page, sect] = matchlist(a:str, '\v\C([-.[:alnum:]_]+)%(\(([-.[:alnum:]_]+)\))?')[1:2]
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if empty(sect)
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let sect = a:sect
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endif
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catch
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echoerr 'man.vim: failed to parse: "'.a:str.'"'
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endtry
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return [page, sect]
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endfunction
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function s:cmd(sect, page) abort
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if !empty(a:sect)
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return s:man_sect_arg.' '.a:sect.' '.a:page
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endif
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return a:page
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endfunction
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function s:find_page(sect, page) abort
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let where = system('/usr/bin/man '.s:man_find_arg.' '.s:cmd(a:sect, a:page))
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return (where =~# '^ */')
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endfunction
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