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The XSLT and XQuery Processor
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2018-2022 Saxonica Limited
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is "Incompatible With Secondary Licenses", as defined by the Mozilla Public License, v. 2.0.
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
package net.sf.saxon.functions;
import net.sf.saxon.Configuration;
import net.sf.saxon.lib.ParseOptions;
import net.sf.saxon.lib.Validation;
import net.sf.saxon.om.AllElementsSpaceStrippingRule;
import net.sf.saxon.om.IgnorableSpaceStrippingRule;
import net.sf.saxon.om.NoElementsSpaceStrippingRule;
import net.sf.saxon.om.SpaceStrippingRule;
import net.sf.saxon.regex.ARegularExpression;
import net.sf.saxon.regex.JavaRegularExpression;
import net.sf.saxon.regex.RegularExpression;
import net.sf.saxon.str.StringView;
import net.sf.saxon.str.UnicodeBuilder;
import net.sf.saxon.trans.Instantiator;
import net.sf.saxon.trans.Maker;
import net.sf.saxon.trans.XPathException;
import net.sf.saxon.transpile.CSharpNullable;
import org.xml.sax.XMLReader;
import java.io.File;
import java.io.FilenameFilter;
import java.util.ArrayList;
import java.util.Optional;
import java.util.StringTokenizer;
/**
* A set of query parameters on a URI passed to the collection() or document() function
*/
@CSharpNullable("enable")
@SuppressWarnings("OptionalUsedAsFieldOrParameterType")
public class URIQueryParameters {
Optional filter = Optional.empty();
Optional recurse = Optional.empty();
Optional validation = Optional.empty();
Optional strippingRule = Optional.empty();
Optional onError = Optional.empty();
Optional xinclude = Optional.empty();
Optional stable = Optional.empty();
Optional metadata = Optional.empty();
Optional contentType = Optional.empty();
Optional> parserMaker = Optional.empty();
public static final int ON_ERROR_FAIL = 1;
public static final int ON_ERROR_WARNING = 2;
public static final int ON_ERROR_IGNORE = 3;
/**
* Create an object representing the query part of a URI
*
* @param query the part of the URI after the "?" symbol
* @param config the Saxon configuration
*/
public URIQueryParameters(String query, Configuration config) throws XPathException {
if (query != null) {
StringTokenizer t = new StringTokenizer(query, ";&");
while (t.hasMoreTokens()) {
String tok = t.nextToken();
int eq = tok.indexOf('=');
if (eq > 0 && eq < (tok.length() - 1)) {
String keyword = tok.substring(0, eq);
String value = tok.substring(eq + 1);
processParameter(config, keyword, value);
}
}
}
}
private void processParameter(Configuration config, String keyword, String value) throws XPathException {
if (keyword.equals("select")) {
filter = Optional.of(makeGlobFilter(value));
} else if (keyword.equals("match")) {
ARegularExpression regex = new ARegularExpression(StringView.of(value).tidy(), "", "XP", new ArrayList<>(), config);
filter = Optional.of(new RegexFilter(regex));
} else if (keyword.equals("recurse")) {
recurse = Optional.of("yes".equals(value));
} else if (keyword.equals("validation")) {
int v = Validation.getCode(value);
if (v != Validation.INVALID) {
validation = Optional.of(v);
}
} else if (keyword.equals("strip-space")) {
switch (value) {
case "yes":
strippingRule = Optional.of(AllElementsSpaceStrippingRule.getInstance());
break;
case "ignorable":
strippingRule = Optional.of(IgnorableSpaceStrippingRule.getInstance());
break;
case "no":
strippingRule = Optional.of(NoElementsSpaceStrippingRule.getInstance());
break;
}
} else if (keyword.equals("stable")) {
if (value.equals("yes")) {
stable = Optional.of(Boolean.TRUE);
} else if (value.equals("no")) {
stable = Optional.of(Boolean.FALSE);
}
} else if (keyword.equals("metadata")) {
if (value.equals("yes")) {
metadata = Optional.of(Boolean.TRUE);
} else if (value.equals("no")) {
metadata = Optional.of(Boolean.FALSE);
}
} else if (keyword.equals("xinclude")) {
if (value.equals("yes")) {
xinclude = Optional.of(Boolean.TRUE);
} else if (value.equals("no")) {
xinclude = Optional.of(Boolean.FALSE);
}
} else if (keyword.equals("content-type")) {
contentType = Optional.of(value);
} else if (keyword.equals("on-error")) {
switch (value) {
case "warning":
onError = Optional.of(ON_ERROR_WARNING);
break;
case "ignore":
onError = Optional.of(ON_ERROR_IGNORE);
break;
case "fail":
onError = Optional.of(ON_ERROR_FAIL);
break;
}
} else if (keyword.equals("parser") && config != null) {
parserMaker = Optional.of(new Instantiator<>(value, config));
}
}
public static FilenameFilter makeGlobFilter(String value) throws XPathException {
UnicodeBuilder sb = new UnicodeBuilder();
sb.append('^');
for (int i = 0; i < value.length(); i++) {
char c = value.charAt(i);
if (c == '.') {
// replace "." with "\."
sb.appendLatin("\\.");
} else if (c == '*') {
// replace "*" with ".*"
sb.appendLatin(".*");
} else if (c == '?') {
// replace "?" with ".?"
sb.appendLatin(".?");
} else {
sb.append(c);
}
}
sb.append('$');
try {
return new RegexFilter(new JavaRegularExpression(sb.toUnicodeString(), ""));
} catch (XPathException e) {
throw new XPathException("Invalid glob " + value + " in collection URI", "FODC0004");
}
}
/**
* Get the value of the strip-space=yes|no parameter.
*
* @return an instance of {@link AllElementsSpaceStrippingRule}, {@link IgnorableSpaceStrippingRule},
* or {@link NoElementsSpaceStrippingRule}, or absent.
*/
public Optional getSpaceStrippingRule() {
return strippingRule;
}
/**
* Get the value of the validation=strict|lax|preserve|strip parameter, or absent if unspecified
*/
public Optional getValidationMode() {
return validation;
}
/**
* Get the file name filter (select=pattern), or absent if unspecified
*/
public Optional getFilenameFilter() {
return filter;
}
/**
* Get the value of the recurse=yes|no parameter, or absent if unspecified
*/
public Optional getRecurse() {
return recurse;
}
/**
* Get the value of the on-error=fail|warning|ignore parameter, or absent if unspecified
*/
public Optional getOnError() {
return onError;
}
/**
* Get the value of xinclude=yes|no, or absent if unspecified
*/
public Optional getXInclude() {
return xinclude;
}
/**
* Get the value of metadata=yes|no, or absent if unspecified
*/
public Optional getMetaData() {
return metadata;
}
/**
* Get the value of media-type, or absent if absent
*/
public Optional getContentType() {
return contentType;
}
/**
* Get the value of stable=yes|no, or absent if unspecified
*/
public Optional getStable() {
return stable;
}
/**
* Get a factory for the selected XML parser class, or absent if unspecified
*/
public Optional> getXMLReaderMaker() {
return parserMaker;
}
/**
* Create ParseOptions based on these query parameters
*/
@SuppressWarnings("OptionalIsPresent")
public ParseOptions makeParseOptions(Configuration config) throws XPathException {
ParseOptions options = new ParseOptions();
Optional stripSpace = getSpaceStrippingRule();
if (stripSpace.isPresent()) {
options.setSpaceStrippingRule(stripSpace.get());
}
Optional validation = getValidationMode();
if (validation.isPresent()) {
options.setSchemaValidationMode(validation.get());
}
Optional xinclude = getXInclude();
if (xinclude.isPresent()) {
options.setXIncludeAware(xinclude.get());
}
return options;
}
/**
* A FilenameFilter that tests file names against a regular expression
*/
public static class RegexFilter implements FilenameFilter {
private final RegularExpression pattern;
public RegexFilter(RegularExpression regex) {
this.pattern = regex;
}
/**
* Tests if a specified file should be included in a file list.
*
* @param dir the directory in which the file was found.
* @param name the name (last component) of the file.
* @return true if and only if the name should be
* included in the file list; false otherwise.
* Returns true if the file is a directory or if it matches the glob pattern.
*/
@Override
public boolean accept(File dir, String name) {
return new File(dir, name).isDirectory() || pattern.matches(StringView.of(name).tidy());
}
/**
* Test whether a name matches the pattern (regardless whether it is a directory or not)
*
* @param name the name (last component) of the file
* @return true if the name matches the pattern.
*/
public boolean matches(String name) {
return pattern.matches(StringView.of(name).tidy());
}
}
}