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StrictXmir
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eo-parser/src/main/java/org/eolang/parser/StrictXmir.java
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| /* | ||
| * The MIT License (MIT) | ||
| * | ||
| * Copyright (c) 2016-2024 Objectionary.com | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included | ||
| * in all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
| package org.eolang.parser; | ||
|
|
||
| import com.jcabi.log.Logger; | ||
| import com.jcabi.manifests.Manifests; | ||
| import com.jcabi.xml.StrictXML; | ||
| import com.jcabi.xml.XML; | ||
| import com.jcabi.xml.XMLDocument; | ||
| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.net.URI; | ||
| import java.net.URISyntaxException; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.Paths; | ||
| import java.util.Collection; | ||
| import java.util.List; | ||
| import javax.xml.namespace.NamespaceContext; | ||
| import org.cactoos.bytes.BytesOf; | ||
| import org.cactoos.bytes.IoCheckedBytes; | ||
| import org.cactoos.io.InputOf; | ||
| import org.cactoos.io.ResourceOf; | ||
| import org.w3c.dom.Node; | ||
| import org.xembly.Directives; | ||
| import org.xembly.Xembler; | ||
| import org.xml.sax.SAXParseException; | ||
|
|
||
| /** | ||
| * XMIR that validates itself right after construction. | ||
| * | ||
| * <p>Be careful with this class, because | ||
| * it modifies the XML encapsulated by replacing the URI of | ||
| * XSD schema with a file, thus making schema validation faster. | ||
| * The original URI of the XSD schema will be lost/removed | ||
| * from the XML. Thus, you better save the XML to disc and only | ||
| * then encapsulate it into this decorator.</p> | ||
| * | ||
| * @since 0.49.0 | ||
| */ | ||
| @SuppressWarnings("PMD.TooManyMethods") | ||
| public final class StrictXmir implements XML { | ||
|
|
||
| /** | ||
| * The XML. | ||
| */ | ||
| private final XML xml; | ||
|
|
||
| /** | ||
| * Ctor. | ||
| * @param src The source | ||
| */ | ||
| public StrictXmir(final XML src) { | ||
| this(src, Paths.get("target/xsd")); | ||
| } | ||
|
|
||
| /** | ||
| * Ctor. | ||
| * @param src The source | ||
| * @param tmp The directory with cached XSD files | ||
| */ | ||
| public StrictXmir(final XML src, final Path tmp) { | ||
| this.xml = new StrictXML(StrictXmir.reset(src, tmp)); | ||
| } | ||
|
|
||
| @Override | ||
| public String toString() { | ||
| return this.xml.toString(); | ||
| } | ||
|
|
||
| @Override | ||
| public List<String> xpath(final String query) { | ||
| return this.xml.xpath(query); | ||
| } | ||
|
|
||
| @Override | ||
| public List<XML> nodes(final String query) { | ||
| return this.xml.nodes(query); | ||
| } | ||
|
|
||
| @Override | ||
| public XML registerNs(final String prefix, final Object uri) { | ||
| return this.xml.registerNs(prefix, uri); | ||
| } | ||
|
|
||
| @Override | ||
| public XML merge(final NamespaceContext context) { | ||
| return this.xml.merge(context); | ||
| } | ||
|
|
||
| @Override | ||
| @Deprecated | ||
| public Node node() { | ||
| throw new UnsupportedOperationException("deprecated"); | ||
| } | ||
|
|
||
| @Override | ||
| public Node inner() { | ||
| return this.xml.inner(); | ||
| } | ||
|
|
||
| @Override | ||
| public Node deepCopy() { | ||
| return this.xml.deepCopy(); | ||
| } | ||
|
|
||
| @Override | ||
| public Collection<SAXParseException> validate() { | ||
| return this.xml.validate(); | ||
| } | ||
|
|
||
| @Override | ||
| public Collection<SAXParseException> validate(final XML schema) { | ||
| return this.xml.validate(schema); | ||
| } | ||
|
|
||
| /** | ||
| * Here, we check the location of the XSD in the XML | ||
| * and replace with a new one, if necessary. | ||
| * @param xml Original XML | ||
| * @param tmp Directory with cached XSD files | ||
| * @return New XML with the same node | ||
| */ | ||
| private static XML reset(final XML xml, final Path tmp) { | ||
| final Node node = xml.inner(); | ||
| final List<String> location = xml.xpath("/program/@xsi:noNamespaceSchemaLocation"); | ||
| if (!location.isEmpty()) { | ||
| String uri = location.get(0); | ||
| if (uri.startsWith("http")) { | ||
| uri = String.format( | ||
| "file:///%s", | ||
| StrictXmir.fetch( | ||
| uri, | ||
| tmp.resolve( | ||
| uri.substring(uri.lastIndexOf('/') + 1) | ||
| ) | ||
| ).toString().replace("\\", "/") | ||
| ); | ||
| } | ||
| new Xembler( | ||
| new Directives().xpath("/program").attr( | ||
| "noNamespaceSchemaLocation xsi http://www.w3.org/2001/XMLSchema-instance", | ||
| uri | ||
| ) | ||
| ).applyQuietly(node); | ||
| } | ||
| return new XMLDocument(node); | ||
| } | ||
|
|
||
| /** | ||
| * Fetch the XSD and place into the path. | ||
| * @param uri The URI | ||
| * @param path The file | ||
| * @return Where it was saved | ||
| */ | ||
| private static File fetch(final String uri, final Path path) { | ||
| final File ret; | ||
| final String mine = String.format( | ||
| "https://www.eolang.org/xsd/XMIR-%s.xsd", | ||
| Manifests.read("EO-Version") | ||
| ); | ||
| if (uri.equals(mine)) { | ||
| if (path.toFile().getParentFile().mkdirs()) { | ||
| Logger.debug(StrictXmir.class, "Directory for %[file]s created", path); | ||
| } | ||
| try { | ||
| Files.write( | ||
| path, | ||
| new IoCheckedBytes( | ||
| new BytesOf(new ResourceOf("XMIR.xsd")) | ||
| ).asBytes() | ||
| ); | ||
| Logger.debug(StrictXmir.class, "XSD copied to %[file]s", path); | ||
| } catch (final IOException ex) { | ||
| throw new IllegalArgumentException( | ||
| String.format("Failed to save %s to %s", uri, path), | ||
| ex | ||
| ); | ||
| } | ||
| ret = path.toFile(); | ||
| } else { | ||
| ret = StrictXmir.download(uri, path); | ||
| } | ||
| return ret; | ||
| } | ||
|
|
||
| /** | ||
| * Download URI from Internet and save to file. | ||
| * @param uri The URI | ||
| * @param path The file | ||
| * @return Where it was saved | ||
| */ | ||
| @SuppressWarnings("PMD.CognitiveComplexity") | ||
| private static File download(final String uri, final Path path) { | ||
| final File abs = path.toFile().getAbsoluteFile(); | ||
| if (!abs.exists()) { | ||
| if (abs.getParentFile().mkdirs()) { | ||
| Logger.debug(StrictXmir.class, "Directory for %[file]s created", path); | ||
| } | ||
| int attempt = 0; | ||
| while (true) { | ||
| ++attempt; | ||
| try { | ||
| Files.write( | ||
| path, | ||
| new IoCheckedBytes( | ||
| new BytesOf(new InputOf(new URI(uri))) | ||
| ).asBytes() | ||
| ); | ||
| Logger.debug( | ||
| StrictXmir.class, | ||
| "XSD downloaded from %s and copied to %[file]s", | ||
| uri, path | ||
| ); | ||
| break; | ||
| } catch (final IOException ex) { | ||
| if (attempt < 3) { | ||
| Logger.warn( | ||
| StrictXmir.class, | ||
| "Attempt #%d failed to download %s to %s: %[exception]s", | ||
| attempt, | ||
| uri, | ||
| path, | ||
| ex | ||
| ); | ||
| continue; | ||
| } | ||
| throw new IllegalArgumentException( | ||
| String.format("Failed to download %s to %s", uri, path), | ||
| ex | ||
| ); | ||
| } catch (final URISyntaxException ex) { | ||
| throw new IllegalArgumentException( | ||
| String.format("Wrong URI: %s", uri), | ||
| ex | ||
| ); | ||
| } | ||
| } | ||
| } | ||
| return abs; | ||
| } | ||
| } |
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