Use git to calculate trusted mtimes
You can remark at the bottom of each page I provide a last modification date.
This label was first calculated using the mtime
of the file on the file system.
But many times I modify this date just to force some recompilation.
Therefore the date wasn’t a date of real modification.
I use git to version my website. And fortunately I can know the last date of real change of a file. This is how I do this with nanoc:
def gitmtime filepath=@item.path.sub('/Scratch/','content/html/').sub(/\/$/,'') ext=%{.#{@item[:extension]}} filepath<<=ext if not FileTest.exists?(filepath) filepath.sub!(ext,%{/index#{ext}}) end str=`git log -1 --format='%ci' -- #{filepath}` if str.nil? or str.empty? return Time.now else return DateTime.parse( str ) end end
Of course I know it is really slow and absolutely not optimized. But it works as expected. Now the date you see at the bottom is exactly the date I modified the content of the page.
Thanks to Eric Sunshine to provide me some hints at cleaning my code.
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Created: 09/02/2010
Modified: 09/03/2010