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856
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1 " Vim Plugin: Edit the file with an existing Vim if possible
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589
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2 " Maintainer: Bram Moolenaar
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1093
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3 " Last Change: 2007 Mar 17
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589
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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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602
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6 " $VIM/vimfiles/plugin directory. Or make a symbolic link, so that you
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7 " automatically use the latest version.
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589
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8
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9 " This plugin serves two purposes:
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10 " 1. On startup, if we were invoked with one file name argument and the file
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11 " is not modified then try to find another Vim instance that is editing
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12 " this file. If there is one then bring it to the foreground and exit.
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13 " 2. When a file is edited and a swap file exists for it, try finding that
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14 " other Vim and bring it to the foreground. Requires Vim 7, because it
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15 " uses the SwapExists autocommand event.
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16
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17 " Function that finds the Vim instance that is editing "filename" and brings
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18 " it to the foreground.
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19 func s:EditElsewhere(filename)
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20 let fname_esc = substitute(a:filename, "'", "''", "g")
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21
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22 let servers = serverlist()
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23 while servers != ''
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24 " Get next server name in "servername"; remove it from "servers".
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25 let i = match(servers, "\n")
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26 if i == -1
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27 let servername = servers
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28 let servers = ''
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29 else
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30 let servername = strpart(servers, 0, i)
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31 let servers = strpart(servers, i + 1)
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32 endif
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33
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34 " Skip ourselves.
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35 if servername ==? v:servername
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36 continue
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37 endif
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856
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38
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589
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39 " Check if this server is editing our file.
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40 if remote_expr(servername, "bufloaded('" . fname_esc . "')")
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41 " Yes, bring it to the foreground.
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42 if has("win32")
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43 call remote_foreground(servername)
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44 endif
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45 call remote_expr(servername, "foreground()")
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46
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602
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47 if remote_expr(servername, "exists('*EditExisting')")
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48 " Make sure the file is visible in a window (not hidden).
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49 " If v:swapcommand exists and is set, send it to the server.
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50 if exists("v:swapcommand")
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51 let c = substitute(v:swapcommand, "'", "''", "g")
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52 call remote_expr(servername, "EditExisting('" . fname_esc . "', '" . c . "')")
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53 else
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54 call remote_expr(servername, "EditExisting('" . fname_esc . "', '')")
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55 endif
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589
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56 endif
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57
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58 if !(has('vim_starting') && has('gui_running') && has('gui_win32'))
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59 " Tell the user what is happening. Not when the GUI is starting
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60 " though, it would result in a message box.
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61 echomsg "File is being edited by " . servername
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62 sleep 2
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63 endif
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64 return 'q'
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65 endif
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66 endwhile
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67 return ''
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68 endfunc
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69
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70 " When the plugin is loaded and there is one file name argument: Find another
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71 " Vim server that is editing this file right now.
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72 if argc() == 1 && !&modified
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73 if s:EditElsewhere(expand("%:p")) == 'q'
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74 quit
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75 endif
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76 endif
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77
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78 " Setup for handling the situation that an existing swap file is found.
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79 try
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80 au! SwapExists * let v:swapchoice = s:EditElsewhere(expand("<afile>:p"))
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81 catch
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82 " Without SwapExists we don't do anything for ":edit" commands
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83 endtry
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84
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85 " Function used on the server to make the file visible and possibly execute a
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86 " command.
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87 func! EditExisting(fname, command)
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1093
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88 " Get the window number of the file in the current tab page.
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89 let winnr = bufwinnr(a:fname)
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90 if winnr <= 0
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91 " Not found, look in other tab pages.
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92 let bufnr = bufnr(a:fname)
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93 for i in range(tabpagenr('$'))
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94 if index(tabpagebuflist(i + 1), bufnr) >= 0
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95 " Make this tab page the current one and find the window number.
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96 exe 'tabnext ' . (i + 1)
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97 let winnr = bufwinnr(a:fname)
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98 break;
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99 endif
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100 endfor
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101 endif
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102
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103 if winnr > 0
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104 exe winnr . "wincmd w"
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589
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105 else
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106 exe "split " . escape(a:fname, ' #%"|')
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107 endif
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108
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109 if a:command != ''
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110 exe "normal " . a:command
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111 endif
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112
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113 redraw
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114 endfunc
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