# Vim documentation: getscript

main help file

    *getscript.txt*	For Vim version 7.0c.  Last change: 2006 Mar 24

    		Get the Latest VimScripts

    Authors:  Charles E. Campbell, Jr.  <NdrOchip@ScampbellPfamilyA.Mbiz>
    	  (remove NOSPAM from the email address)

    						*GetLatestVimScripts-copyright*
    Copyright: (c) 2004-2005 by Charles E. Campbell, Jr.
               The VIM LICENSE applies to GetLatestVimScripts.vim and
               GetLatestVimScripts.txt (see |copyright|) except use
               "GetLatestVimScripts" instead of "Vim".
               No warranty, express or implied.  Use At-Your-Own-Risk.

    ==============================================================================

    1. Contents						*glvs-contents*

    	1. Contents.......................................: |glvs-contents|
    	2. GetLatestVimScripts Usage......................: |glvs|
    	3. GetLatestVimScripts Data File..................: |glvs-data|
    	4. GetLatestVimScripts Plugins....................: |glvs-plugins|
    	5. GetLatestVimScripts AutoInstall................: |glvs-autoinstall|
    	6. GetLatestVimScripts Algorithm..................: |glvs-alg|
    	7. GetLatestVimScripts History....................: |glvs-hist|

    ==============================================================================

    2. GetLatestVimScripts Usage	      *getlatestvimscripts* *getscript* *glvs*

    	While in vim, type

    		:GetLatestVimScripts

    	Unless its been defined elsewhere,

    		:GLVS

    	will also work.

    	The script will attempt to update and, if so directed, automatically
     install scripts from	http://vim.sourceforge.net/. To do so it will
    	peruse a file, [.vim|vimfiles]/GetLatest/GetLatestVimScripts.dat
    	(see |glvs-data|), and examine plugins in your [.vim|vimfiles]/plugin
    	directory (see |glvs-plugins|).

    	Scripts which have been downloaded will appear in the .../GetLatest
    	subdirectory.

    	The <GetLatestVimScripts.dat> file will be automatically be updated to
    	reflect the latest version of script(s) so downloaded.

    ==============================================================================

    3. GetLatestVimScripts Data File	*getlatestvimscripts-data* *glvs-data*

    	The Data file has a header which should appear as:

    		ScriptID SourceID Filename
    		--------------------------

    	Below that are three columns; the first two are numeric followed by a
    	text column.

    	The first number on each line gives the script's ScriptID.  When
    	you're about to use a web browser to look at scripts on
    	http://vim.sf.net/, just before you click on the script's link, you'll
    	see a line resembling

    	http://vim.sourceforge.net/scripts/script.php?script_id=40

    	The "40" happens to be a ScriptID that GetLatestVimScripts needs to
    	download the associated page.

    	The second number on each line gives the script's SourceID.  The
    	SourceID records the count of uploaded scripts as determined by
    	vim.sf.net; hence it serves to indicate "when" a script was uploaded.
    	Setting the SourceID to 1 insures that GetLatestVimScripts will assume
    	that the script it has is out-of-date.

    	The SourceID is extracted by GetLatestVimScripts from the script's
    	page on vim.sf.net; whenever its greater than the one stored in the
    	GetLatestVimScripts.dat file, the script will be downloaded.

    	If your script's author has included a special comment line in his/her
    	plugin, the plugin itself will be used by GetLatestVimScripts to build
    	your <GetLatestVimScripts.dat> file, including any dependencies on
    	other scripts it may have.

    	If your comment field begins with :AutoInstall:, GetLatestVimScripts
    	will attempt to automatically install the script.  Thus,
    	GetLatestVimScripts thus provides a comprehensive ability to keep your
    	plugins up-to-date!

    ==============================================================================

    4. GetLatestVimScripts Plugins	*getlatestvimscripts-plugins* *glvs-plugins*

    	If a plugin author includes the following comment anywhere in their
    	plugin, GetLatestVimScripts will find it and use it to build user's
    	GetLatestVimScripts.dat files:

    	                             src_id
    		                            v
    		" GetLatestVimScripts: ### ### yourscriptname
    		                        ^
    		                    scriptid

    	As an author, you should include such a line in to refer to your own
    	script plus any additional lines describing any plugin dependencies it
    	may have.  Same format, of course!

    	If your command is auto-installable (see |glvs-autoinstall|), and most
    	scripts are, then you may include :AutoInstall: at the start of
    	"yourscriptname".

    	GetLatestVimScript commands for those scripts are then appended, if
    	not already present, to the user's GetLatest/GetLatestVimScripts.dat
    	file.  Its a relatively painless way to automate the acquisition of
    	any scripts your plugins depend upon.

    	Now, as an author, you probably don't want GetLatestVimScripts to
    	download your own scripts for you yourself, thereby overwriting your
    	not-yet-released hard work.  GetLatestVimScripts provides a solution
    	for this:  put

    		0 0 yourscriptname

    	into your <GetLatestVimScripts.dat> file and GetLatestVimScripts will
    	skip examining the "yourscriptname" scripts for those
    	GetLatestVimScript comment lines.  As a result, those lines won't be
    	inadvertently installed into your <GetLatestVimScripts.dat> file and
    	subsequently used to download your own scripts.  This is especially
    	important to do if you've included the :AutoInstall: option.

    	Be certain to use the same "yourscriptname" in the "0 0
    	yourscriptname" line as you've used in your GetLatestVimScript
    	comment!

    ==============================================================================

    5. GetLatestVimScripts AutoInstall	*getlatestvimscripts-autoinstall*

    					*glvs-autoinstall*

    	GetLatestVimScripts now supports "AutoInstall".  Not all scripts are
    	supportive of auto-install, as they may have special things you need
    	to do to install them (please refer to the script's "install"
    	directions).  On the other hand, most scripts will be
    	auto-installable.

    	To let GetLatestVimScripts do an autoinstall, the data file's comment
    	field should begin with (surrounding blanks are ignored):

    		:AutoInstall:

    	Both colons are needed, and it should begin the comment
    	(yourscriptname) field.

    	One may prevent any autoinstalling by putting the following line
    	in your <.vimrc>:

    		let g:GetLatestVimScripts_allowautoinstall= 0

    	With :AutoInstall: enabled, as it is by default, files which end with

    	  ---.tar.bz2  : decompressed and untarred in [.vim|vimfiles] directory
    	  ---.tar.gz   : decompressed and untarred in [.vim|vimfiles] directory
    	  ---.vim.bz2  : decompressed and moved to the .vim/plugin directory
    	  ---.vim.gz   : decompressed and moved to the .vim/plugin directory
    	  ---.zip      : unzipped in [.vim|vimfiles] directory
    	  ---.vim      : moved to [.vim|vimfiles]/plugin directory

    	and which merely need to have their components placed by the
    	untar/gunzip or move-to-plugin-directory process should be
    	auto-installable.

    	When is a script not auto-installable?  Let me give an example:

    		[.vim|vimfiles]/after/syntax/blockhl.vim

    	The <blockhl.vim> script provides block highlighting for C/C++
    	programs; it is available at:

    		http://vim.sourceforge.net/scripts/script.php?script_id=104

    	Currently, vim's after/syntax only supports by-filetype scripts (in
    	blockhl.vim's case, that's after/syntax/c.vim).  Hence, auto-install
    	would possibly overwrite the current user's after/syntax/c.vim file.

    	In my own case, I use <aftersyntax.vim> (renamed to
    	after/syntax/c.vim) to allow a after/syntax/c/ directory:

    		http://vim.sourceforge.net/scripts/script.php?script_id=1023

    	The script allows multiple syntax files to exist separately in the
    	after/syntax/c subdirectory.  I can't bundle aftersyntax.vim in and
    	build an appropriate tarball for auto-install because of the potential
    	for the after/syntax/c.vim contained in it to overwrite a user's
    	c.vim.

    ==============================================================================

    6. GetLatestVimScripts Algorithm	*getlatestvimscripts-algorithm*

    								*glvs-alg*

    	The Vim sourceforge page dynamically creates a page by keying off of
    	the so-called script-id.  Within the webpage of

    	http://vim.sourceforge.net/scripts/script.php?script_id=40

    	is a line specifying the latest source-id (src_id).  The source
    	identifier numbers are always increasing, hence if the src_id is
    	greater than the one recorded for the script in GetLatestVimScripts
    	then its time to download a newer copy of that script.

    	GetLatestVimScripts will then download the script and update its
    	internal database of script ids, source ids, and scriptnames.

    	The AutoInstall process will:

    		Move the file from GetLatest/ to the following directory
    			Unix   : $HOME/.vim
    			Windows: $HOME\vimfiles

    		if the downloaded file ends with ".bz2"
    			bunzip2 it
    		else if the downloaded file ends with ".gz"
    			gunzip it
    		if the resulting file ends with ".zip"
    			unzip it
    		else if the resulting file ends with ".tar"
    			tar -oxvf it
    		else if the resulting file ends with ".vim"
    			move it to the plugin subdirectory

    ==============================================================================

    7. GetLatestVimScripts History       *getlatestvimscripts-history* *glvs-hist*

    	v20 Dec 23, 2005 : * Eric Haarbauer found&fixed a bug with unzip use;
    	                     unzip needs the -o flag to overwrite.
    	v19 Nov 28, 2005 : * v18's GetLatestVimScript line accessed the wrong
    	                     script! Fixed.
    	v18 Mar 21, 2005 : * bugfix to automatic database construction
    	                   * bugfix - nowrapscan caused an error
    	                     (tnx to David Green for the fix)
    	    Apr 01, 2005   * if shell is bash, "mv" instead of "ren" used in
    	                     :AutoInstall:s, even though its o/s is windows
    	    Apr 01, 2005   * when downloading errors occurred, GLVS was
    	                     terminating early.  It now just goes on to trying
    	                     the next script (after trying three times to
    	                     download a script description page)
    	    Apr 20, 2005   * bugfix - when a failure to download occurred,
    	                     GetLatestVimScripts would stop early and claim that
    	                     everything was current.  Fixed.
    	v17 Aug 25, 2004 : * g:GetLatestVimScripts_allowautoinstall, which
    	                     defaults to 1, can be used to prevent all
    	                     :AutoInstall:
    	v16 Aug 25, 2004 : * made execution of bunzip2/gunzip/tar/zip silent
    	                   * fixed bug with :AutoInstall: use of helptags
    	v15 Aug 24, 2004 : * bugfix: the "0 0 comment" download prevention wasn't
    	                     always preventing downloads (just usually).  Fixed.
    	v14 Aug 24, 2004 : * bugfix -- helptags was using dotvim, rather than
    	                     s:dotvim.  Fixed.
    	v13 Aug 23, 2004 : * will skip downloading a file if its scriptid or srcid
    	                     is zero.  Useful for script authors; that way their
    	                     own GetLatestVimScripts activity won't overwrite
    	                     their scripts.
    	v12 Aug 23, 2004 : * bugfix - a "return" got left in the distribution that
    	                     was intended only for testing.  Removed, now works.
    	                   * :AutoInstall: implemented
    	v11 Aug 20, 2004 : * GetLatestVimScripts is now a plugin:
    	                   * :GetLatestVimScripts command
    	                   * (runtimepath)/GetLatest/GetLatestVimScripts.dat
    	                     now holds scripts that need updating
    	v10 Apr 19, 2004 : * moved history from script to doc
    	v9  Jan 23, 2004 :   windows (win32/win16/win95) will use
    	                     double quotes ("") whereas other systems will use
    	                     single quotes ('') around the urls in calls via wget
    	v8  Dec 01, 2003 :   makes three tries at downloading
    	v7  Sep 02, 2003 :   added error messages if "Click on..." or "src_id="
    	                     not found in downloaded webpage
    	                     Uses t_ti, t_te, and rs to make progress visible
    	v6  Aug 06, 2003 :   final status messages now display summary of work
    	                     ( "Downloaded someqty scripts" or
    	                       "Everything was current")
    	                     Now GetLatestVimScripts is careful about downloading
    	                     GetLatestVimScripts.vim itself!
    	                     (goes to <NEW_GetLatestVimScripts.vim>)
    	v5  Aug 04, 2003 :   missing an endif near bottom
    	v4  Jun 17, 2003 :   redraw! just before each "considering" message
    	v3  May 27, 2003 :   Protects downloaded files from errant shell
    	                     expansions with single quotes: '...'
    	v2  May 14, 2003 :   extracts name of item to be obtained from the
    	                     script file.  Uses it instead of comment field
    	                     for output filename; comment is used in the
    	                     "considering..." line and is now just a comment!
    	                   * Fixed a bug: a string-of-numbers is not the
    	                     same as a number, so I added zero to them
    	                     and they became numbers.  Fixes comparison.

    ==============================================================================
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