protected void checkLink(XMLElement e, String attrNS, String attr) {
String href = e.getAttributeNS(attrNS, attr);
String rel = e.getAttributeNS(attrNS, "rel");
if (xrefChecker.isPresent()
&& href != null
&& rel != null
&& rel.toLowerCase().contains("stylesheet")) {
href = PathUtil.resolveRelativeReference(path, href, base == null ? null : base.toString());
xrefChecker
.get()
.registerReference(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
href,
XRefChecker.Type.STYLESHEET);
// Check the mimetype to record possible non-standard stylesheets
// with no fallback
String mimetype = xrefChecker.get().getMimeType(href);
if (mimetype != null) {
if (OPFChecker.isBlessedStyleType(mimetype)
|| OPFChecker.isDeprecatedBlessedStyleType(mimetype)) {
hasCss = true;
} else {
nonStandardStylesheetLink =
Optional.of(
EPUBLocation.create(
path, parser.getLineNumber(), parser.getColumnNumber(), href));
}
}
}
}
protected void checkImage(XMLElement e, String attrNS, String attr) {
String href = e.getAttributeNS(attrNS, attr);
if (xrefChecker.isPresent() && href != null) {
href = PathUtil.resolveRelativeReference(path, href, base == null ? null : base.toString());
xrefChecker
.get()
.registerReference(
path, parser.getLineNumber(), parser.getColumnNumber(), href, XRefChecker.Type.IMAGE);
}
}
protected void checkHRef(XMLElement e, String attrNS, String attr) {
String href = e.getAttributeNS(attrNS, attr);
if (href == null) {
return;
}
href = href.trim();
if (href.isEmpty()) {
// if href="" then selfreference which is valid,
// but as per issue 225, issue a hint
report.message(
MessageId.HTM_045,
EPUBLocation.create(path, parser.getLineNumber(), parser.getColumnNumber(), href));
return;
} else if (href.contains("#epubcfi")) {
return; // temp until cfi implemented
} else if (".".equals(href)) {
// selfreference, no need to check
return;
}
URI uri = checkURI(href);
if (uri == null) return;
if ("http".equals(uri.getScheme())) {
report.info(path, FeatureEnum.REFERENCE, href);
}
/*
* mgy 20120417 adding check for base to initial if clause as part of
* solution to issue 155
*/
if (URISchemes.contains(uri.getScheme())
|| (null != base && URISchemes.contains(base.getScheme()))) {
return;
}
// This if statement is needed to make sure XML Fragment identifiers
// are not reported as non-registered URI scheme types
else if (uri.getScheme() != null) {
report.message(
MessageId.HTM_025,
EPUBLocation.create(path, parser.getLineNumber(), parser.getColumnNumber(), href));
return;
}
try {
href = PathUtil.resolveRelativeReference(path, href, base == null ? null : base.toString());
} catch (IllegalArgumentException err) {
report.message(
MessageId.OPF_010,
EPUBLocation.create(path, parser.getLineNumber(), parser.getColumnNumber(), href),
err.getMessage());
return;
}
processHyperlink(href);
}
public void startElement() {
XMLElement e = parser.getCurrentElement();
String ns = e.getNamespace();
String name = e.getName();
String id = e.getAttribute("id");
if (ns.equals("http://www.daisy.org/z3986/2005/dtbook/")) {
// link@href, a@href, img@src
String uri = null;
/*
* This section checks to see if the references used are registered
* schema-types and whether they point to external resources. The
* resources are only allowed to be external if the attribute
* "external" is set to true.
*/
if (name.equals("a")) {
uri = e.getAttribute("href");
String external = e.getAttribute("external");
if (uri != null && external.equals("true")) {
if (OPSHandler.isRegisteredSchemeType(uri)) uri = null;
else if (uri.indexOf(':') > 0) {
parser
.getReport()
.warning(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
"use of non-registered URI schema type in href: " + uri);
uri = null;
}
}
} else if (name.equals("link")) {
uri = e.getAttribute("href");
} else if (name.equals("img")) {
uri = e.getAttribute("src");
}
if (uri != null) {
// TODO check if dtbook uses xml:base of so set third param
uri = PathUtil.resolveRelativeReference(path, uri, null);
xrefChecker.registerReference(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
uri,
name.equals("img") ? XRefChecker.RT_IMAGE : XRefChecker.RT_HYPERLINK);
if (uri.startsWith("http")) {
parser.getReport().info(path, FeatureEnum.REFERENCE, uri);
}
}
if (id != null)
xrefChecker.registerAnchor(
path, parser.getLineNumber(), parser.getColumnNumber(), id, XRefChecker.RT_HYPERLINK);
}
}
protected void checkPaint(XMLElement e, String attr) {
String paint = e.getAttribute(attr);
if (xrefChecker.isPresent()
&& paint != null
&& paint.startsWith("url(")
&& paint.endsWith(")")) {
String href = paint.substring(4, paint.length() - 1);
href = PathUtil.resolveRelativeReference(path, href, base == null ? null : base.toString());
xrefChecker
.get()
.registerReference(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
href,
XRefChecker.Type.SVG_PAINT);
}
}
public void startElement() {
XMLElement e = parser.getCurrentElement();
String ns = e.getNamespace();
String name = e.getName();
if (ns.equals("http://www.daisy.org/z3986/2005/ncx/")) {
if (name.equals("content")) {
String href = e.getAttribute("src");
if (href != null) {
href = PathUtil.resolveRelativeReference(path, href, null);
xrefChecker.registerReference(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
href,
XRefChecker.RT_HYPERLINK);
}
}
}
}
private void processRef(String ref, XRefChecker.Type type) {
if (ref != null && context.xrefChecker.isPresent()) {
ref = PathUtil.resolveRelativeReference(path, ref, null);
if (type == XRefChecker.Type.AUDIO) {
String mimeType = context.xrefChecker.get().getMimeType(ref);
if (mimeType != null && !OPFChecker30.isBlessedAudioType(mimeType)) {
report.message(
MessageId.MED_005,
EPUBLocation.create(path, parser.getLineNumber(), parser.getColumnNumber()),
ref,
mimeType);
}
}
context
.xrefChecker
.get()
.registerReference(path, parser.getLineNumber(), parser.getColumnNumber(), ref, type);
}
}
private void processLink(XMLElement e) {
processLinkRel(e.getAttribute("rel"));
// needs refactor: its problematic to register
// link resources as items
String id = e.getAttribute("id");
String href = e.getAttribute("href");
if (href != null && !href.matches("^[^:/?#]+://.*")) {
try {
href = PathUtil.resolveRelativeReference(path, href, null);
} catch (IllegalArgumentException ex) {
report.message(
MessageId.OPF_010,
new MessageLocation(path, parser.getLineNumber(), parser.getColumnNumber(), href),
ex.getMessage());
href = null;
}
}
if (href != null && href.matches("^[^:/?#]+://.*")) {
report.info(path, FeatureEnum.REFERENCE, href);
}
String mimeType = e.getAttribute("media-type");
OPFItem item =
new OPFItem(
id, href, mimeType, "", "", "", null, parser.getLineNumber(), parser.getColumnNumber());
if (id != null) {
itemMapById.put(id, item);
}
// if (href != null) {
// mgy: awaiting proper refactor, only add these if local
if (href != null && !href.matches("^[^:/?#]+://.*")) {
itemMapByPath.put(href, item);
items.add(item);
}
}
public void startElement() {
boolean registerEntry = true;
XMLElement e = parser.getCurrentElement();
String ns = e.getNamespace();
if (ns == null
|| ns.equals("")
|| ns.equals("http://openebook.org/namespaces/oeb-package/1.0/")
|| ns.equals("http://www.idpf.org/2007/opf")) {
String name = e.getName();
if (name.equals("package")) {
if (!ns.equals("http://www.idpf.org/2007/opf")) {
report.warning(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
"OPF file is using OEBPS 1.2 syntax allowing backwards compatibility");
opf12PackageFile = true;
}
/*
* This section checks to see the value of the unique-identifier
* attribute and stores it in the String uniqueIdent or reports
* an error if the unique-identifier attribute is missing or
* does not have a value
*/
String uniqueIdentAttr = e.getAttribute("unique-identifier");
if (uniqueIdentAttr != null && !uniqueIdentAttr.equals("")) {
uniqueIdent = uniqueIdentAttr;
} else {
report.error(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
"unique-identifier attribute in package element must be present and have a value");
}
} else if (name.equals("item")) {
String id = e.getAttribute("id");
String href = e.getAttribute("href");
if (href != null && !(version == EPUBVersion.VERSION_3 && href.startsWith("http://"))) {
try {
href = PathUtil.resolveRelativeReference(path, href, null);
} catch (IllegalArgumentException ex) {
report.error(path, parser.getLineNumber(), parser.getColumnNumber(), ex.getMessage());
href = null;
}
}
String mimeType = e.getAttribute("media-type");
String fallback = e.getAttribute("fallback");
String fallbackStyle = e.getAttribute("fallback-style");
String namespace = e.getAttribute("island-type");
String properties = e.getAttribute("properties");
if (properties != null) properties = properties.replaceAll("[\\s]+", " ");
if (version == EPUBVersion.VERSION_3
&& href.startsWith("http://")
&& !OPFChecker30.isBlessedAudioType(mimeType))
if (OPFChecker30.isCoreMediaType(mimeType)) {
report.error(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
"Only audio and video remote resources are permitted");
} else {
// mgy 20120414: this shouldn't even be a warning
// report.warning(
// path,
// parser.getLineNumber(),
// parser.getColumnNumber(),
// "Remote resource not validated");
}
OPFItem item =
new OPFItem(
id,
href,
mimeType,
fallback,
fallbackStyle,
namespace,
properties,
parser.getLineNumber(),
parser.getColumnNumber());
if (id != null) itemMapById.put(id, item);
if (properties != null) {
String propertyArray[] = properties.split(" ");
for (int i = 0; i < propertyArray.length; i++) {
if (propertyArray[i].equals("nav")) item.setNav(true);
if (propertyArray[i].equals("scripted")) item.setScripted(true);
}
}
if (href != null && registerEntry) {
itemMapByPath.put(href, item);
items.add(item);
}
} else if (name.equals("reference")) {
String type = e.getAttribute("type");
String title = e.getAttribute("title");
String href = e.getAttribute("href");
if (href != null && xrefChecker != null) {
try {
href = PathUtil.resolveRelativeReference(path, href, null);
xrefChecker.registerReference(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
href,
XRefChecker.RT_GENERIC);
} catch (IllegalArgumentException ex) {
report.error(path, parser.getLineNumber(), parser.getColumnNumber(), ex.getMessage());
href = null;
}
}
OPFReference ref =
new OPFReference(type, title, href, parser.getLineNumber(), parser.getColumnNumber());
refs.add(ref);
} else if (name.equals("spine")) {
String idref = e.getAttribute("toc");
if (idref != null) {
toc = (OPFItem) itemMapById.get(idref);
if (toc == null)
report.error(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
"item with id '" + idref + "' not found");
else {
toc.setNcx(true);
if (toc.getMimeType() != null && !toc.getMimeType().equals("application/x-dtbncx+xml"))
report.error(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
"toc attribute references resource with non-NCX mime type; \"application/x-dtbncx+xml\" is expected");
}
}
} else if (name.equals("itemref")) {
String idref = e.getAttribute("idref");
if (idref != null) {
OPFItem item = getItemById(idref);
if (item != null) {
spine.add(item);
item.setInSpine(true);
String linear = e.getAttribute("linear");
if (linear != null && "no".equals(linear.trim())) {
item.setSpineLinear(false);
} else {
item.setSpineLinear(true);
}
} else {
report.error(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
"item with id '" + idref + "' not found");
}
}
} else if (name.equals("dc-metadata") || name.equals("x-metadata")) {
if (!opf12PackageFile)
report.error(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
"use of deprecated element '" + name + "'");
}
} else if (ns.equals("http://purl.org/dc/elements/1.1/")) {
// in the DC metadata, when the <identifier> element is parsed, if
// it has a non-null and non-empty id attribute value that is the
// same as the value of the unique-identifier attribute of the
// package element, set uniqueIdentExists = true (to make sure that
// the unique-identifier attribute references an existing
// <identifier> id attribute
String name = e.getName();
if (name.equals("identifier")) {
String idAttr = e.getAttribute("id");
if (idAttr != null && !idAttr.equals("") && idAttr.equals(uniqueIdent))
uniqueIdentExists = true;
} else if (name.equals("creator")) {
String role = e.getAttributeNS("http://www.idpf.org/2007/opf", "role");
if (role != null && !role.equals("")) {
if (!isValidRole(role))
report.error(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
"role value '" + role + "' is not valid");
}
}
}
}