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< link rel = "alternate" lang = "fr" xml:lang = "fr" title = "Comment réparer un XML coupé ?" type = "text/html" hreflang = "fr" href = "/Scratch/fr/blog/2010-05-19-How-to-cut-HTML-and-repair-it/" / >
< link rel = "alternate" lang = "en" xml:lang = "en" title = "How to repair a cutted XML?" type = "text/html" hreflang = "en" href = "/Scratch/en/blog/2010-05-19-How-to-cut-HTML-and-repair-it/" / >
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< a href = "/Scratch/en/blog/2010-05-19-How-to-cut-HTML-and-repair-it/" onclick = "setLanguage('en')" > in English< / a >
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Comment réparer un XML coupé ?
< / h1 >
< h2 >
et comment s'en sortir sans parseur ?
< / h2 >
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< p > Sur ma page d’ ’ ’ < / p >
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< p > Prenons un exemple :< / p >
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< pre > < code class = "html" > < div class="corps">
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< p> Introduction< /p>
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< p> The first paragraph< /p>
< img src="/img/img.png" alt="an image"/>
< p> Another long paragraph< /p>
< /div>
< / code > < / pre >
< p > Après avoir coupé, j’ :< / p >
< pre > < code class = "html" > < div class="corps">
< div class="intro">
< p> Introduction< /p>
< /div>
< p> The first paragraph< /p>
< img src="/img/im
< / code > < / pre >
< p > En plein milieu d’ < code > < img> < / code > !< / p >
< p > En réalité, ce n’ ’ ’ ’ < / p >
< p > Pour notre exemple, juste après le paragraphe < code > first paragraph< / code > nous n’ ’ < code > div< / code > pour la classe < code > corps< / code > et le XML est réparé. Bien entendu, quand on est dans le cas où un tag est coupé au milieu, on a qu’ < / p >
< p > Donc, tout ce que nous avons à faire, c’ ’ :< / p >
< pre > < code class = "html" > []
[div] < div class="corps">
[div, div] < div class="intro">
[div, div, p] < p>
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Introduction
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[div, div] < /p>
[div] < /div>
[div, p] < p>
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The first paragraph
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[div] < /p>
[div] < img src="/img/img.png" alt="an image"/>
[div, p] < p>
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Another long paragraph
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[div] < /p>
[] < /div>
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< p > L’ :< / p >
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< pre > < code class = "html" > let res be the XML as a string ;
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read res and each time you encouter a tag:
if it is an opening one:
push it to the stack
else if it is a closing one:
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pop the stack.
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remove any malformed/cutted tag in the end of res
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for each tag in the stack, pop it, and write:
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res = res + closed tag
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return res
< / code > < / pre >
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< p > Et < code > res< / code > contiend le XML réparé.< / p >
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< p > Finallement, voici le code en ruby que j’ < code > xml< / code > contient le XML coupé.< / p >
< div class = "codefile" > < a href = "/Scratch/fr/blog/2010-05-19-How-to-cut-HTML-and-repair-it/code/repair_xml.rb" > ➥ repair_xml.rb< / a > < / div >
< pre > < code class = "ruby" > # repair cutted XML code by closing the tags
# work even if the XML is cut into a tag.
# example:
# transform '< div> < span> toto < /span> < p> hello < a href="http://tur'
# into '< div> < span> toto < /span> < p> hello < /p> < /div> '
def repair_xml( xml )
parents=[]
depth=0
xml.scan( %r{< (/?)(\w*)[^> ]*(/?)> } ).each do |m|
if m[2] == "/"
next
end
if m[0] == ""
parents[depth]=m[1]
depth+=1
else
depth-=1
end
end
res=xml.sub(/< [^> ]*$/m,'')
depth-=1
depth.downto(0).each { |x| res< < = %{< /#{parents[x]}> } }
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res
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end
< / code > < / pre >
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< p > Je ne sais pas si ce code pourra vous être utile. Par contre le raisonnement pour y parvenir mérite d’ < / p >
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Écrit le : 19/05/2010
modifié le : 04/10/2010
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