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Utilisation de git pour calculer les mtimes
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< p > Vous pouvez remarquer qu’ à la fin de chaque page je donne une date de dernière modification.
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Précédemment cette date était calculée en utilisant la date du fichier.
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Mais il arrive fréquemment que je fasse un < code > touch< / code > d’ un fichier pour engendrer tout le site de nouveau.
Donc la date n’ est pas nécessairement la < em > vraie< / em > de modification du contenue.< / p >
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< p > J’ utilise < a href = "http://git-scm.org" > git< / a > pour < em > versionner< / em > mon site web.
Et cet outil me permet de récupérer la dernière date de < em > vraie< / em > modification d’ un fichier.
Voici comment je m’ y prend avec < a href = "http://nanoc.stoneship.org" > nanoc< / a > :< / p >
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< div class = "code" > < div class = "file" > < a href = "/Scratch/fr/blog/2010-09-02-Use-git-to-calculate-trusted-mtimes/code/gitmtime.rb" > ➥ gitmtime.rb < / a > < / div > < div class = "withfile" >
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< pre class = "twilight" >
< span class = "Keyword" > def< / span > < span class = "Entity" > gitmtime< / span >
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filepath< span class = "Keyword" > =< / span > < span class = "Variable" > < span class = "Variable" > @< / span > item< / span > .< span class = "Entity" > path< / span > .< span class = "Entity" > sub< / span > (< span class = "String" > < span class = "String" > '< / span > /Scratch/< span class = "String" > '< / span > < / span > ,< span class = "String" > < span class = "String" > '< / span > content/html/< span class = "String" > '< / span > < / span > ).< span class = "Entity" > sub< / span > (< span class = "StringRegexp" > < span class = "StringRegexp" > /< / span > < / span > < span class = "StringRegexp" > < span class = "StringRegexpSpecial" > \/< / span > $< / span > < span class = "StringRegexp" > < span class = "StringRegexp" > /< / span > < / span > ,< span class = "String" > < span class = "String" > '< / span > < span class = "String" > '< / span > < / span > )
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ext< span class = "Keyword" > =< / span > < span class = "String" > < span class = "String" > %{< / span > .< span class = "StringEmbeddedSource" > < span class = "StringEmbeddedSource" > #{< / span > < span class = "StringVariable" > < span class = "StringVariable" > @< / span > item< / span > < span class = "StringEmbeddedSource" > [< / span > < span class = "StringConstant" > < span class = "StringConstant" > :< / span > extension< / span > < span class = "StringEmbeddedSource" > ]< / span > < span class = "StringEmbeddedSource" > }< / span > < / span > < span class = "String" > }< / span > < / span >
filepath< span class = "Keyword" > < < =< / span > ext
< span class = "Keyword" > if< / span > < span class = "Keyword" > not< / span > < span class = "Support" > FileTest< / span > .< span class = "Entity" > exists?< / span > (filepath)
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filepath.< span class = "Entity" > sub!< / span > (ext,< span class = "String" > < span class = "String" > %{< / span > < span class = "StringEmbeddedSource" > < span class = "StringEmbeddedSource" > #{< / span > < span class = "StringVariable" > < span class = "StringVariable" > @< / span > item< / span > < span class = "StringEmbeddedSource" > < span class = "StringEmbeddedSource" > .< / span > < span class = "Entity" > raw_filename< / span > < / span > < span class = "StringEmbeddedSource" > }< / span > < / span > < span class = "StringEmbeddedSource" > < span class = "StringEmbeddedSource" > #{< / span > ext< span class = "StringEmbeddedSource" > }< / span > < / span > < span class = "String" > }< / span > < / span > )
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< span class = "Keyword" > end< / span >
str< span class = "Keyword" > =< / span > < span class = "String" > < span class = "String" > `< / span > git log -1 --format='%ci' -- < span class = "StringEmbeddedSource" > < span class = "StringEmbeddedSource" > #{< / span > filepath< span class = "StringEmbeddedSource" > }< / span > < / span > < span class = "String" > `< / span > < / span >
< span class = "Keyword" > if< / span > str.< span class = "Entity" > nil?< / span > < span class = "Keyword" > or< / span > str.< span class = "Entity" > empty?< / span >
< span class = "Keyword" > return< / span > < span class = "Support" > Time< / span > .< span class = "Entity" > now< / span >
< span class = "Keyword" > else< / span >
< span class = "Keyword" > return< / span > < span class = "Support" > DateTime< / span > .< span class = "Entity" > parse< / span > ( str )
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< p > Bien entendu je sais que c’ est très lent et absolument pas optimisé.
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Mais ça fonctionne comme prévu.
Maintenant la date que vous voyez en bas de la page correspond exactement à la dernière date de modification de son contenu.< / p >
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< p > < em > Mise à jour< / em > :
Je tiens à remercier Eric Sunshine et Kris pour leurs conseils sur ce problème.< / p >
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Écrit le : 02/09/2010
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modifié le : 14/09/2011
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Site entièrement réalisé avec
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et
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