/**
* Check whether it's legal to add the {@link CMAbstractCode resource} with the given parameters.
*/
private static boolean shouldAddCode(
CMAbstractCode code, boolean onlyIeExcludes, boolean onlyExternalLinks) {
boolean add = Boolean.FALSE;
// add code if both "only" parameters are false
if (!onlyExternalLinks && !onlyIeExcludes) {
add = Boolean.TRUE;
} else {
// add either all ieExcludes, or all externalLinks. Do not add ExternalLinks if it's also an
// IeExclude.
boolean isIeExclude = code.getIeExpression().length() != 0;
boolean isExternalLink = code.getDataUrl().length() != 0;
if (isIeExclude) {
if (onlyIeExcludes) {
add = Boolean.TRUE;
}
} else {
if (isExternalLink && onlyExternalLinks) {
add = Boolean.TRUE;
}
}
}
return add;
}
/**
* Return a filtered list of {@link CMAbstractCode codes} for the given list of codes and their
* {@link CMAbstractCode#getInclude() includes}. Does not include {@link
* CMAbstractCode#getDataUrl() external links} and {@link CMAbstractCode#getIeExpression() ie
* specific links}.
*/
@Nonnull
private static List<CMAbstractCode> getCodeListForHash(
@Nullable List<? extends CMAbstractCode> codes,
@Nullable List excludes,
@Nonnull List<CMAbstractCode> results) {
if (codes != null) {
for (CMAbstractCode code : codes) {
boolean excluded = excludes != null && excludes.contains(code);
if (!excluded) {
// get all included contents as well. Do not use includes of excluded contents.
if (code.getInclude().size() != 0) {
getCodeListForHash(code.getInclude(), excludes, results);
}
// only add resources that are not IeExcludes nor ExternalLinks
boolean isIeExclude = code.getIeExpression().length() != 0;
boolean isExternalLink = code.getDataUrl().length() != 0;
if (!isIeExclude && !isExternalLink) {
results.add(code);
}
}
}
}
return results;
}
/**
* Return a filtered list of {@link CMAbstractCode codes} for the given list of codes and their
* {@link CMAbstractCode#getInclude() includes}.
*
* @param codes The list of resources.
* @return the codes.
*/
@Nonnull
private static List<CMAbstractCode> getFilteredCodeList(
@Nullable List<? extends CMAbstractCode> codes,
@Nullable List excludes,
@Nonnull List<CMAbstractCode> results,
boolean onlyIeExcludes,
boolean onlyExternalLinks) {
if (codes != null) {
for (CMAbstractCode code : codes) {
// check if resource is excluded in config
boolean excluded = excludes != null && excludes.contains(code);
// only work on non-excluded resources
if (!excluded) {
// get all included contents as well. Do not use includes of excluded contents.
if (code.getInclude().size() != 0) {
getFilteredCodeList(
code.getInclude(), excludes, results, onlyIeExcludes, onlyExternalLinks);
}
// add resource only if it's valid to do so.
boolean add = shouldAddCode(code, onlyIeExcludes, onlyExternalLinks);
if (add) {
results.add(code);
}
}
}
}
return results;
}
/**
* Compile a single hashCode for the tree of codes linked in a navigation.
*
* @param navigation the navigation
* @param extension the extension of the codes
* @param excludes exludes codes to exclude
* @return the hash
*/
public static int getHashes(CMNavigation navigation, String extension, List excludes) {
List<CMAbstractCode> codes = new ArrayList<>();
if (CSS_EXTENSION.equals(extension)) {
codes = getCodeListForHash(navigation.getCss(), excludes, codes);
} else if (JAVASCRIPT_EXTENSION.equals(extension)) {
codes = getCodeListForHash(navigation.getJavaScript(), excludes, codes);
}
int hash = 0;
for (CMAbstractCode code : codes) {
if (code.getCode() != null) {
hash += code.getCode().hashCode();
}
}
return hash;
}
