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Clarify base iri of package document #1468

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merged 7 commits into from
Apr 2, 2021
Merged

Clarify base iri of package document #1468

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6a336c8
add section on resolving relative IRIs in the package document
mattgarrish Jan 14, 2021
28410b6
add def link
mattgarrish Jan 14, 2021
8119c66
Merge branch 'main' into fix/issue-1456-packagedoc
mattgarrish Mar 31, 2021
f58bc8b
clarify resolving relative references is not a requirement in all cases
mattgarrish Apr 1, 2021
f9c3c70
Merge branch 'fix/issue-1456-packagedoc' of https://github.com/w3c/ep…
mattgarrish Apr 1, 2021
6645792
Merge branch 'main' into fix/issue-1456-packagedoc
mattgarrish Apr 1, 2021
8884e0d
Merge branch 'fix/issue-1456-packagedoc' of https://github.com/w3c/ep…
mattgarrish Apr 1, 2021
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6 changes: 3 additions & 3 deletions epub33/core/index.html
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Expand Up @@ -2713,9 +2713,9 @@ <h6>The <code>item</code> Element</h6>

<p>Each <code>item</code> element identifies a <a>Publication Resource</a> by the IRI
[[!RFC3987]] provided in its <code>href</code> attribute. The IRI MAY be absolute or
relative. In the case of relative IRIs, the IRI of the Package Document is used as the
base when resolving to absolute IRIs. The resulting absolute IRI MUST be unique within
the <code>manifest</code> scope.</p>
relative, but each IRI MUST be unique within the <code>manifest</code> scope after <a
href="https://www.w3.org/TR/epub-rs-33/#sec-package-relative-iris">resolution to an
absolute IRI</a> [[!EPUB-RS-33]].</p>

<p id="attrdef-item-media-type">The Publication Resource identified by an <code>item</code>
element MUST conform to the applicable specification(s) as inferred from the MIME media
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14 changes: 14 additions & 0 deletions epub33/rs/index.html
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Expand Up @@ -314,6 +314,20 @@ <h4>Presentation Logic</h4>
layouts).</p>
</section>

<section id="sec-package-relative-iris">
<h4>Resolving Relative IRIs</h4>

<p>To obtain an absolute IRI reference from a relative IRI reference [[!RFC3987]] in the Package
Document, Reading Systems MUST use the Base IRI [[!RFC3986]] of the Package Document.</p>

<p>The Base IRI of the Package Document is the combination of the Base IRI of the <a>EPUB Container</a>
together with the path to Package Document (relative to the <a>Root Directory</a>) when an EPUB
Publication is zipped.</p>

<p>This specification does not require a specific IRI scheme for referencing the path to the Package
Document within the EPUB Container.</p>
</section>

<section id="dir">
<h4>Base Direction</h4>

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