private void processBinding(XMLElement e) {
String mimeType = e.getAttribute("media-type");
String handlerId = e.getAttribute("handler");
if ((mimeType != null) && (handlerId != null)) {
if (OPFChecker30.isCoreMediaType(mimeType)) {
report.message(
MessageId.OPF_008,
new MessageLocation(path, parser.getLineNumber(), parser.getColumnNumber()),
mimeType);
return;
}
if (xrefChecker != null && xrefChecker.getBindingHandlerSrc(mimeType) != null) {
report.message(
MessageId.OPF_009,
new MessageLocation(path, parser.getLineNumber(), parser.getColumnNumber()),
mimeType,
xrefChecker.getBindingHandlerSrc(mimeType));
return;
}
OPFItem handler = itemMapById.get(handlerId);
if (handler != null && xrefChecker != null) {
xrefChecker.registerBinding(mimeType, handler.path);
}
}
}
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));
}
}
}
}
public void startElement() {
if (!checkedUnsupportedXMLVersion) {
HandlerUtil.checkXMLVersion(parser);
checkedUnsupportedXMLVersion = true;
}
XMLElement e = parser.getCurrentElement();
String name = e.getName();
if (name.equals("smil")) {
vocabs =
VocabUtil.parsePrefixDeclaration(
e.getAttributeNS(EpubConstants.EpubTypeNamespaceUri, "prefix"),
RESERVED_VOCABS,
KNOWN_VOCAB_URIS,
DEFAULT_VOCAB_URIS,
report,
EPUBLocation.create(path, parser.getLineNumber(), parser.getColumnNumber()));
} else if (name.equals("seq")) {
processSeq(e);
} else if (name.equals("text")) {
processSrc(e);
} else if (name.equals("audio")) {
processRef(e.getAttribute("src"), XRefChecker.Type.AUDIO);
} else if (name.equals("body") || name.equals("par")) {
checkType(e.getAttributeNS(EpubConstants.EpubTypeNamespaceUri, "type"));
}
}
public void endElement() {
openElements--;
XMLElement e = parser.getCurrentElement();
String ns = e.getNamespace();
String name = e.getName();
if (openElements == 0) {
report.info(path, FeatureEnum.CHARS_COUNT, Long.toString(charsCount));
if (!epubTypeInUse) {
if (context.version == EPUBVersion.VERSION_3) {
report.message(MessageId.ACC_007, EPUBLocation.create(path));
}
} else {
epubTypeInUse = false;
}
}
ElementLocation currentLocation = elementLocationStack.pop();
if (EpubConstants.HtmlNamespaceUri.equals(ns)) {
if ("script".equals(name)) {
String attr = e.getAttribute("type");
report.info(path, FeatureEnum.HAS_SCRIPTS, (attr == null) ? "" : attr);
} else if ("style".equals(name)) {
String style = textNode.toString();
if (style.length() > 0) {
CSSCheckerFactory.getInstance()
.newInstance(context, style, currentLocation.getLineNumber(), false)
.runChecks();
}
textNode = null;
} else if ("head".equals(name)) {
checkStylesheetFallback();
} else if ("table".equals(name)) {
if (tableDepth > 0) {
--tableDepth;
EPUBLocation location =
EPUBLocation.create(
path,
currentLocation.getLineNumber(),
currentLocation.getColumnNumber(),
"table");
checkDependentCondition(MessageId.ACC_005, tableDepth == 0, hasTh, location);
checkDependentCondition(MessageId.ACC_006, tableDepth == 0, hasThead, location);
checkDependentCondition(MessageId.ACC_012, tableDepth == 0, hasCaption, location);
hasTh = hasThead = hasCaption = false;
}
}
}
}
public void characters(char[] chars, int start, int len) {
XMLElement e = parser.getCurrentElement();
if (e.getNamespace().equals("http://purl.org/dc/elements/1.1/")) {
String name = e.getName();
if (name.equals("identifier")
|| name.equals("date")
|| name.equals("title")
|| name.equals("language")) {
String val = (String) e.getPrivateData();
String text = new String(chars, start, len);
if (val == null) val = text;
else val = val + text;
e.setPrivateData(val);
}
}
}
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);
}
}
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);
}
}
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);
}
}
}
}
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() {
super.startElement();
XMLElement e = parser.getCurrentElement();
String name = e.getName();
if (name.equals("package")) {
HandlerUtil.processPrefixes(
e.getAttribute("prefix"),
prefixSet,
report,
path,
parser.getLineNumber(),
parser.getColumnNumber());
} else if (name.equals("meta")) {
processMeta(e);
} else if (name.equals("link")) {
processLink(e);
} else if (name.equals("item")) {
processItemProperties(e.getAttribute("properties"), e.getAttribute("media-type"));
} else if (name.equals("itemref")) {
processItemrefProperties(e.getAttribute("properties"));
} else if (name.equals("mediaType")) {
processBinding(e);
}
}
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);
}
}
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 endElement() {
XMLElement e = parser.getCurrentElement();
if (e.getNamespace().equals("http://purl.org/dc/elements/1.1/")) {
String name = e.getName();
if (name.equals("identifier")) {
String idAttr = e.getAttribute("id");
if (idAttr != null && !idAttr.equals("") && idAttr.equals(uniqueIdent)) {
// String idval = (String) e.getPrivateData();
// if (idval != null && ocf != null)
// ocf.setUniqueIdentifier(idval);
}
} else if (name.equals("date")) {
String dateval = (String) e.getPrivateData();
boolean valid = true;
String detail = null;
if (dateval == null || "".equals(dateval)) {
valid = false;
detail = "zero-length string";
} else {
DateParser dateParser = new DateParser();
try {
Date date = dateParser.parse(dateval.trim());
/*
* mg: DateParser does not enforce four-digit years,
* which http://www.w3.org/TR/NOTE-datetime seems to want
*/
String year = new SimpleDateFormat("yyyy").format(date);
if (year.length() > 4) throw new InvalidDateException(year);
} catch (InvalidDateException d) {
valid = false;
detail = d.getMessage();
}
}
if (!valid) {
if (this.version == EPUBVersion.VERSION_3) {
report.warning(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
"date value '"
+ (dateval == null ? "" : dateval)
+ "' does not follow recommended syntax as per http://www.w3.org/TR/NOTE-datetime:"
+ detail);
} else {
report.error(
path,
parser.getLineNumber(),
parser.getColumnNumber(),
"date value '"
+ (dateval == null ? "" : dateval)
+ "' is not valid as per http://www.w3.org/TR/NOTE-datetime:"
+ detail);
}
}
} else if (name.equals("title") || name.equals("language")) {
// issue 138: issue a warning if dc:title and dc:language is empty for 2.0 and 2.0.1
// note that an empty dc:identifier is checked in opf20.rng and will
// therefore be reported as an error, that may or may not be a good idea.
if (version == EPUBVersion.VERSION_2) {
String value = (String) e.getPrivateData();
if (value == null || value.trim().length() < 1) {
report.warning(
path, parser.getLineNumber(), parser.getColumnNumber(), name + " element is empty");
}
}
}
}
}
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");
}
}
}
}
private void processSrc(XMLElement e) {
processRef(e.getAttribute("src"), XRefChecker.Type.HYPERLINK);
}
private void processSeq(XMLElement e) {
processRef(
e.getAttributeNS(EpubConstants.EpubTypeNamespaceUri, "textref"),
XRefChecker.Type.HYPERLINK);
checkType(e.getAttributeNS(EpubConstants.EpubTypeNamespaceUri, "type"));
}
private void processMeta(XMLElement e) {
processMetaProperty(e.getAttribute("property"));
processMetaScheme(e.getAttribute("scheme"));
}
public void startElement() {
openElements++;
XMLElement e = parser.getCurrentElement();
ElementLocation currentLocation =
new ElementLocation(parser.getLineNumber(), parser.getColumnNumber());
elementLocationStack.push(currentLocation);
if (!checkedUnsupportedXMLVersion) {
HandlerUtil.checkXMLVersion(parser);
checkedUnsupportedXMLVersion = true;
}
String id = e.getAttribute("id");
String baseTest = e.getAttributeNS(XMLConstants.XML_NS_URI, "base");
if (baseTest != null) {
base = checkURI(baseTest);
}
if (!epubTypeInUse) {
String eNS = e.getAttributeNS(EpubConstants.EpubTypeNamespaceUri, "type");
if (eNS != null) {
epubTypeInUse = true;
}
}
String ns = e.getNamespace();
String name = e.getName().toLowerCase();
XRefChecker.Type resourceType = XRefChecker.Type.GENERIC;
if (ns != null) {
if (ns.equals("http://www.w3.org/2000/svg")) {
if (name.equals("lineargradient")
|| name.equals("radialgradient")
|| name.equals("pattern")) {
resourceType = XRefChecker.Type.SVG_PAINT;
} else if (name.equals("clippath")) {
resourceType = XRefChecker.Type.SVG_CLIP_PATH;
} else if (name.equals("symbol")) {
resourceType = XRefChecker.Type.SVG_SYMBOL;
} else if (name.equals("a")) {
checkHRef(e, "http://www.w3.org/1999/xlink", "href");
} else if (name.equals("use")) {
checkSymbol(e, "http://www.w3.org/1999/xlink", "href");
} else if (name.equals("image")) {
checkImage(e, "http://www.w3.org/1999/xlink", "href");
}
checkPaint(e, "fill");
checkPaint(e, "stroke");
} else if (ns.equals(EpubConstants.HtmlNamespaceUri)) {
if (name.equals("a")) {
checkHRef(e, null, "href");
} else if (name.equals("img")) {
checkImage(e, null, "src");
} else if (name.equals("object")) {
checkObject(e, null, "data");
} else if (name.equals("link")) {
checkLink(e, null, "href");
} else if (name.equals("base")) {
base = checkURI(e.getAttribute("href"));
} else if (name.equals("style")) {
textNode = new StringBuilder();
} else if (name.equals("iframe")) {
checkIFrame(e);
} else if (name.equals("table")) {
++tableDepth;
} else if (name.equals("th") && tableDepth > 0) {
hasTh = true;
} else if (name.equals("thead") && tableDepth > 0) {
hasThead = true;
} else if (name.equals("caption") && tableDepth > 0) {
hasCaption = true;
} else if (name.equals("i")
|| name.equals("b")
|| name.equals("em")
|| name.equals("strong")) {
checkBoldItalics(e);
}
resourceType = XRefChecker.Type.HYPERLINK;
String style = e.getAttribute("style");
if (style != null && style.length() > 0) {
CSSCheckerFactory.getInstance()
.newInstance(context, style, currentLocation.getLineNumber(), true)
.runChecks();
}
}
}
if (xrefChecker.isPresent() && id != null) {
xrefChecker
.get()
.registerAnchor(
path,
currentLocation.getLineNumber(),
currentLocation.getColumnNumber(),
id,
resourceType);
}
}
protected void checkIFrame(XMLElement e) {
report.message(
MessageId.HTM_036,
EPUBLocation.create(path, parser.getLineNumber(), parser.getColumnNumber(), e.getName()));
}