126 lines
4.3 KiB
VimL
126 lines
4.3 KiB
VimL
" File: remoteOpen.vim
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" Author: Srinath Avadhanula <srinath AT fastmail DOT fm>
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" $Id: remoteOpen.vim,v 1.2 2003/06/14 04:43:07 srinathava Exp $
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"
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" Description:
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" Often times, an external program needs to open a file in gvim from the
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" command line. However, it will not know if the file is already opened in a
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" previous vim session. It is not sufficient to simply specify
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"
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" gvim --remote-silent <filename>
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"
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" because this simply opens up <filename> in the first remote gvim session it
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" sees. This script provides a command RemoteOpen which is meant to be used
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" from the command line as follows:
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"
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" gvim -c ":RemoteOpen +<lnum> <filename>"
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"
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" where <lnum> is the line-number you wish <filename> to open to. What will
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" happen is that a new gvim will start up and enquire from all previous
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" sessions if <filename> is already open in any of them. If it is, then it
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" will edit the file in that session and bring it to the foreground and itself
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" quit. Otherwise, it will not quit and instead open up the file for editing
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" at <lnum>.
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"
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" This was mainly created to be used with Yap (the dvi previewer in miktex),
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" so you can specify the program for "inverse search" as specified above.
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" This ensures that the inverse search uses the correct gvim each time.
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"
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" Ofcourse, this requires vim with +clientserver. If not, then RemoteOpen just
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" opens in the present session.
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" Enclose <args> in single quotes so it can be passed as a function argument.
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com -nargs=1 RemoteOpen :call RemoteOpen('<args>')
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" RemoteOpen: open a file remotely (if possible) {{{
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" Description: checks all open vim windows to see if this file has been opened
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" anywhere and if so, opens it there instead of in this session.
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function! RemoteOpen(arglist)
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" First construct line number and filename from argument. a:arglist is of
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" the form:
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" +10 c:\path\to\file
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" or just
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" c:\path\to\file
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if a:arglist =~ '^\s*+\d\+'
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let linenum = matchstr(a:arglist, '^\s*+\zs\d\+\ze')
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let filename = matchstr(a:arglist, '^\s*+\d\+\s*\zs.*\ze')
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else
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let linenum = 1
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let filename = matchstr(a:arglist, '^\s*\zs.*\ze')
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endif
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" If there is no clientserver functionality, then just open in the present
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" session and return
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if !has('clientserver')
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exec "e ".filename
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exec linenum
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normal! zv
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return
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endif
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" Otherwise, loop through all available servers
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let servers = serverlist()
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" If there are no servers, open file locally.
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if servers == ''
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exec "e ".filename
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exec linenum
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let g:Remote_Server = 1
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normal! zv
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return
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endif
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let i = 1
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let server = s:Strntok(servers, "\n", i)
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let firstServer = v:servername
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while server != ''
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" Find out if there was any server which was used by remoteOpen before
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" this. If a new gvim session was ever started via remoteOpen, then
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" g:Remote_Server will be set.
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if remote_expr(server, 'exists("g:Remote_Server")')
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let firstServer = server
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endif
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" Ask each server if that file is being edited by them.
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let bufnum = remote_expr(server, "bufnr('".filename."')")
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" If it is...
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if bufnum != -1
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" ask the server to edit that file and come to the foreground.
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" set a variable g:Remote_Server to indicate that this server
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" session has at least one file opened via RemoteOpen
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call remote_send(server, "\<C-\>\<C-n>:drop ".filename."\<CR>:".linenum."\<CR>:normal! zv\<CR>")
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call remote_send(server, ":let g:Remote_Server = 1\<CR>")
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call remote_foreground(server)
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" quit this vim session
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q
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" Is this necessary? :)
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return
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end
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let i = i + 1
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let server = s:Strntok(servers, "\n", i)
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endwhile
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" If none of the servers have the file open, then open this file in the
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" first server. This has the advantage if yap tries to make vim open
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" multiple vims, then at least they will all be opened by the same gvim
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" server.
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call remote_send(firstServer, "\<C-\>\<C-n>:drop ".filename."\<CR>:".linenum."\<CR>:normal! zv\<CR>")
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call remote_send(firstServer, ":let g:Remote_Server = 1\<CR>")
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call remote_foreground(firstServer)
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" quit this vim session
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if v:servername != firstServer
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q
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endif
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endfunction " }}}
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" Strntok: extract the n^th token from a list {{{
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" example: Strntok('1,23,3', ',', 2) = 23
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fun! <SID>Strntok(s, tok, n)
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return matchstr( a:s.a:tok[0], '\v(\zs([^'.a:tok.']*)\ze['.a:tok.']){'.a:n.'}')
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endfun
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" }}}
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" vim:ft=vim:ts=4:sw=4:noet:fdm=marker:commentstring=\"\ %s:nowrap
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