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589
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1 " Vim Plugin: Edit the file with an existing Vim if possible
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2 " Maintainer: Bram Moolenaar
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3 " Last Change: 2005 Dec 11
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4
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5 " This is a plugin, drop it in your (Unix) ~/.vim/plugin or (Win32)
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6 " $VIM/vimfiles/plugin directory.
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7
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8 " This plugin serves two purposes:
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9 " 1. On startup, if we were invoked with one file name argument and the file
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10 " is not modified then try to find another Vim instance that is editing
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11 " this file. If there is one then bring it to the foreground and exit.
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12 " 2. When a file is edited and a swap file exists for it, try finding that
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13 " other Vim and bring it to the foreground. Requires Vim 7, because it
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14 " uses the SwapExists autocommand event.
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15
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16 " Function that finds the Vim instance that is editing "filename" and brings
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17 " it to the foreground.
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18 func s:EditElsewhere(filename)
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19 let fname_esc = substitute(a:filename, "'", "''", "g")
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20
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21 let servers = serverlist()
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22 while servers != ''
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23 " Get next server name in "servername"; remove it from "servers".
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24 let i = match(servers, "\n")
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25 if i == -1
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26 let servername = servers
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27 let servers = ''
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28 else
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29 let servername = strpart(servers, 0, i)
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30 let servers = strpart(servers, i + 1)
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31 endif
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32
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33 " Skip ourselves.
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34 if servername ==? v:servername
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35 continue
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36 endif
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37
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38 " Check if this server is editing our file.
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39 if remote_expr(servername, "bufloaded('" . fname_esc . "')")
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40 " Yes, bring it to the foreground.
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41 if has("win32")
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42 call remote_foreground(servername)
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43 endif
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44 call remote_expr(servername, "foreground()")
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45
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46 " Make sure the file is visible in a window (not hidden).
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47 " If v:swapcommand exists and is set, send it to the server.
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48 if exists("v:swapcommand")
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49 let c = substitute(v:swapcommand, "'", "''", "g")
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50 call remote_expr(servername, "EditExisting('" . fname_esc . "', '" . c . "')")
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51 else
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52 call remote_expr(servername, "EditExisting('" . fname_esc . "', '')")
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53 endif
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54
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55 if !(has('vim_starting') && has('gui_running') && has('gui_win32'))
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56 " Tell the user what is happening. Not when the GUI is starting
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57 " though, it would result in a message box.
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58 echomsg "File is being edited by " . servername
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59 sleep 2
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60 endif
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61 return 'q'
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62 endif
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63 endwhile
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64 return ''
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65 endfunc
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66
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67 " When the plugin is loaded and there is one file name argument: Find another
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68 " Vim server that is editing this file right now.
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69 if argc() == 1 && !&modified
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70 if s:EditElsewhere(expand("%:p")) == 'q'
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71 quit
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72 endif
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73 endif
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74
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75 " Setup for handling the situation that an existing swap file is found.
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76 try
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77 au! SwapExists * let v:swapchoice = s:EditElsewhere(expand("<afile>:p"))
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78 catch
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79 " Without SwapExists we don't do anything for ":edit" commands
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80 endtry
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81
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82 " Function used on the server to make the file visible and possibly execute a
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83 " command.
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84 func! EditExisting(fname, command)
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85 let n = bufwinnr(a:fname)
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86 if n > 0
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87 exe n . "wincmd w"
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88 else
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89 exe "split " . escape(a:fname, ' #%"|')
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90 endif
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91
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92 if a:command != ''
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93 exe "normal " . a:command
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94 endif
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95
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96 redraw
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97 endfunc
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