fix: do not check fragment identifiers on PDF references

rdeltour · rdeltour · commit b81a77d07c79 · 2023-04-22T01:43:48.000+02:00
Fix #1482
diff --git a/src/main/java/org/w3c/epubcheck/core/references/ResourceReferencesChecker.java b/src/main/java/org/w3c/epubcheck/core/references/ResourceReferencesChecker.java
@@ -169,11 +169,15 @@ else if (MIMEType.SVG.is(targetMimetype) && !fragment.isValid())
       {
         Reference.Type targetIDType = resourceRegistry.getIDType(fragment.getId(),
             targetResource);
-        if (targetIDType == null)
+
+        // Check that target ID exists (if the target is XHTML or SVG)
+        if (targetIDType == null
+            && (MIMEType.SVG.is(targetMimetype) || MIMEType.XHTML.is(targetMimetype)))
         {
           report.message(MessageId.RSC_012, reference.location.context(reference.url.toString()));
           throw new CheckAbortException();
         }
+        
         switch (reference.type)
         {
         case SVG_PAINT:
diff --git a/src/test/resources/epub3/06-content-document/content-document-xhtml.feature b/src/test/resources/epub3/06-content-document/content-document-xhtml.feature
@@ -523,6 +523,11 @@ Feature: EPUB 3 — Content Documents — XHTML
     And no other errors or warnings are reported
 
 
+  #### Objects
+
+  Scenario: Allow fragment identifiers on PDFs
+    When checking EPUB 'object-pdf-fragment-valid'
+    Then no errors or warnings are reported
 
   ####  Schematron Assertions
 
diff --git a/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/EPUB/content_001.xhtml b/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/EPUB/content_001.xhtml
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html xmlns:epub="https://www.idpf.org/2007/ops" xmlns="https://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+	<head>
+		<meta charset="utf-8"/>
+		<title>Minimal EPUB</title>
+	</head>
+	<body>
+		<h1>Loomings</h1>
+		<p>Call me Ishmael.</p>
+		<object data="test.pdf#view=FitV" type="application/pdf"></object>
+	</body>
+</html>
diff --git a/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/EPUB/nav.xhtml b/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/EPUB/nav.xhtml
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html xmlns="https://www.w3.org/1999/xhtml" xmlns:epub="https://www.idpf.org/2007/ops" xml:lang="en" lang="en">
+	<head>
+		<meta charset="utf-8"/>
+		<title>Minimal Nav</title>
+	</head>
+	<body>
+		<nav epub:type="toc">
+			<ol>
+				<li><a href="content_001.xhtml">content 001</a></li>
+			</ol>
+		</nav>
+	</body>
+</html>
diff --git a/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/EPUB/package.opf b/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/EPUB/package.opf
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<package xmlns="https://www.idpf.org/2007/opf" version="3.0" xml:lang="en" unique-identifier="q">
+<metadata xmlns:dc="https://purl.org/dc/elements/1.1/">
+  <dc:title id="title">Minimal EPUB 3.0</dc:title>
+  <dc:language>en</dc:language>
+  <dc:identifier id="q">NOID</dc:identifier>
+  <meta property="dcterms:modified">2017-06-14T00:00:01Z</meta>
+</metadata>
+<manifest>
+  <item id="content_001"  href="content_001.xhtml" media-type="application/xhtml+xml"/>
+  <item id="nav"  href="nav.xhtml" media-type="application/xhtml+xml" properties="nav"/>
+  <item id="pdf" href="test.pdf" media-type="application/pdf" fallback="content_001"/>
+</manifest>
+<spine>
+  <itemref idref="content_001" />
+</spine>
+</package>
diff --git a/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/EPUB/test.pdf b/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/EPUB/test.pdf
diff --git a/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/META-INF/container.xml b/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/META-INF/container.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">
+	<rootfiles>
+		<rootfile full-path="EPUB/package.opf" media-type="application/oebps-package+xml"/>
+	</rootfiles>
+</container>
diff --git a/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/mimetype b/src/test/resources/epub3/06-content-document/files/object-pdf-fragment-valid/mimetype
@@ -0,0 +1 @@
+application/epub+zip

Original file line number	Diff line number	Diff line change
`@@ -169,11 +169,15 @@ else if (MIMEType.SVG.is(targetMimetype) && !fragment.isValid())`
`169`	`169`	`{`
`170`	`170`	`Reference.Type targetIDType = resourceRegistry.getIDType(fragment.getId(),`
`171`	`171`	`targetResource);`
`172`		`- if (targetIDType == null)`
	`172`	`+`
	`173`	`+ // Check that target ID exists (if the target is XHTML or SVG)`
	`174`	`+ if (targetIDType == null`
	`175`	`+ && (MIMEType.SVG.is(targetMimetype) \|\| MIMEType.XHTML.is(targetMimetype)))`
`173`	`176`	`{`
`174`	`177`	`report.message(MessageId.RSC_012, reference.location.context(reference.url.toString()));`
`175`	`178`	`throw new CheckAbortException();`
`176`	`179`	`}`
	`180`	`+`
`177`	`181`	`switch (reference.type)`
`178`	`182`	`{`
`179`	`183`	`case SVG_PAINT:`