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 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package jdk.nashorn.internal.runtime;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOError;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.Reader;
import java.lang.ref.WeakReference;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.time.LocalDateTime;
import java.util.Arrays;
import java.util.Base64;
import java.util.Objects;
import java.util.WeakHashMap;
import jdk.nashorn.api.scripting.URLReader;
import jdk.nashorn.internal.parser.Token;
import jdk.nashorn.internal.runtime.logging.DebugLogger;
import jdk.nashorn.internal.runtime.logging.Loggable;
import jdk.nashorn.internal.runtime.logging.Logger;
Source objects track the origin of JavaScript entities.
/** * Source objects track the origin of JavaScript entities. */
@Logger(name="source") public final class Source implements Loggable { private static final int BUF_SIZE = 8 * 1024; private static final Cache CACHE = new Cache(); // Message digest to file name encoder private final static Base64.Encoder BASE64 = Base64.getUrlEncoder().withoutPadding();
Descriptive name of the source as supplied by the user. Used for error reporting to the user. For example, SyntaxError will use this to print message. Used to implement __FILE__. Also used for SourceFile in .class for debugger usage.
/** * Descriptive name of the source as supplied by the user. Used for error * reporting to the user. For example, SyntaxError will use this to print message. * Used to implement __FILE__. Also used for SourceFile in .class for debugger usage. */
private final String name;
Base path or URL of this source. Used to implement __DIR__, which can be used to load scripts relative to the location of the current script. This will be null when it can't be computed.
/** * Base path or URL of this source. Used to implement __DIR__, which can be * used to load scripts relative to the location of the current script. * This will be null when it can't be computed. */
private final String base;
Source content
/** Source content */
private final Data data;
Cached hash code
/** Cached hash code */
private int hash;
Base64-encoded SHA1 digest of this source object
/** Base64-encoded SHA1 digest of this source object */
private volatile byte[] digest;
source URL set via //@ sourceURL or //# sourceURL directive
/** source URL set via //@ sourceURL or //# sourceURL directive */
private String explicitURL; // Do *not* make this public, ever! Trusts the URL and content. private Source(final String name, final String base, final Data data) { this.name = name; this.base = base; this.data = data; } private static synchronized Source sourceFor(final String name, final String base, final URLData data) throws IOException { try { final Source newSource = new Source(name, base, data); final Source existingSource = CACHE.get(newSource); if (existingSource != null) { // Force any access errors data.checkPermissionAndClose(); return existingSource; } // All sources in cache must be fully loaded data.load(); CACHE.put(newSource, newSource); return newSource; } catch (final RuntimeException e) { final Throwable cause = e.getCause(); if (cause instanceof IOException) { throw (IOException) cause; } throw e; } } private static class Cache extends WeakHashMap<Source, WeakReference<Source>> { public Source get(final Source key) { final WeakReference<Source> ref = super.get(key); return ref == null ? null : ref.get(); } public void put(final Source key, final Source value) { assert !(value.data instanceof RawData); put(key, new WeakReference<>(value)); } } /* package-private */ DebuggerSupport.SourceInfo getSourceInfo() { return new DebuggerSupport.SourceInfo(getName(), data.hashCode(), data.url(), data.array()); } // Wrapper to manage lazy loading private static interface Data { URL url(); int length(); long lastModified(); char[] array(); boolean isEvalCode(); } private static class RawData implements Data { private final char[] array; private final boolean evalCode; private int hash; private RawData(final char[] array, final boolean evalCode) { this.array = Objects.requireNonNull(array); this.evalCode = evalCode; } private RawData(final String source, final boolean evalCode) { this.array = Objects.requireNonNull(source).toCharArray(); this.evalCode = evalCode; } private RawData(final Reader reader) throws IOException { this(readFully(reader), false); } @Override public int hashCode() { int h = hash; if (h == 0) { h = hash = Arrays.hashCode(array) ^ (evalCode? 1 : 0); } return h; } @Override public boolean equals(final Object obj) { if (this == obj) { return true; } if (obj instanceof RawData) { final RawData other = (RawData)obj; return Arrays.equals(array, other.array) && evalCode == other.evalCode; } return false; } @Override public String toString() { return new String(array()); } @Override public URL url() { return null; } @Override public int length() { return array.length; } @Override public long lastModified() { return 0; } @Override public char[] array() { return array; } @Override public boolean isEvalCode() { return evalCode; } } private static class URLData implements Data { private final URL url; protected final Charset cs; private int hash; protected char[] array; protected int length; protected long lastModified; private URLData(final URL url, final Charset cs) { this.url = Objects.requireNonNull(url); this.cs = cs; } @Override public int hashCode() { int h = hash; if (h == 0) { h = hash = url.hashCode(); } return h; } @Override public boolean equals(final Object other) { if (this == other) { return true; } if (!(other instanceof URLData)) { return false; } final URLData otherData = (URLData) other; if (url.equals(otherData.url)) { // Make sure both have meta data loaded try { if (isDeferred()) { // Data in cache is always loaded, and we only compare to cached data. assert !otherData.isDeferred(); loadMeta(); } else if (otherData.isDeferred()) { otherData.loadMeta(); } } catch (final IOException e) { throw new RuntimeException(e); } // Compare meta data return this.length == otherData.length && this.lastModified == otherData.lastModified; } return false; } @Override public String toString() { return new String(array()); } @Override public URL url() { return url; } @Override public int length() { return length; } @Override public long lastModified() { return lastModified; } @Override public char[] array() { assert !isDeferred(); return array; } @Override public boolean isEvalCode() { return false; } boolean isDeferred() { return array == null; } @SuppressWarnings("try") protected void checkPermissionAndClose() throws IOException { try (InputStream in = url.openStream()) { // empty } debug("permission checked for ", url); } protected void load() throws IOException { if (array == null) { final URLConnection c = url.openConnection(); try (InputStream in = c.getInputStream()) { array = cs == null ? readFully(in) : readFully(in, cs); length = array.length; lastModified = c.getLastModified(); debug("loaded content for ", url); } } } protected void loadMeta() throws IOException { if (length == 0 && lastModified == 0) { final URLConnection c = url.openConnection(); length = c.getContentLength(); lastModified = c.getLastModified(); debug("loaded metadata for ", url); } } } private static class FileData extends URLData { private final File file; private FileData(final File file, final Charset cs) { super(getURLFromFile(file), cs); this.file = file; } @Override protected void checkPermissionAndClose() throws IOException { if (!file.canRead()) { throw new FileNotFoundException(file + " (Permission Denied)"); } debug("permission checked for ", file); } @Override protected void loadMeta() { if (length == 0 && lastModified == 0) { length = (int) file.length(); lastModified = file.lastModified(); debug("loaded metadata for ", file); } } @Override protected void load() throws IOException { if (array == null) { array = cs == null ? readFully(file) : readFully(file, cs); length = array.length; lastModified = file.lastModified(); debug("loaded content for ", file); } } } private static void debug(final Object... msg) { final DebugLogger logger = getLoggerStatic(); if (logger != null) { logger.info(msg); } } private char[] data() { return data.array(); }
Returns a Source instance
Params:
  • name – source name
  • content – contents as char array
  • isEval – does this represent code from 'eval' call?
Returns:source instance
/** * Returns a Source instance * * @param name source name * @param content contents as char array * @param isEval does this represent code from 'eval' call? * @return source instance */
public static Source sourceFor(final String name, final char[] content, final boolean isEval) { return new Source(name, baseName(name), new RawData(content, isEval)); }
Returns a Source instance
Params:
  • name – source name
  • content – contents as char array
Returns:source instance
/** * Returns a Source instance * * @param name source name * @param content contents as char array * * @return source instance */
public static Source sourceFor(final String name, final char[] content) { return sourceFor(name, content, false); }
Returns a Source instance
Params:
  • name – source name
  • content – contents as string
  • isEval – does this represent code from 'eval' call?
Returns:source instance
/** * Returns a Source instance * * @param name source name * @param content contents as string * @param isEval does this represent code from 'eval' call? * @return source instance */
public static Source sourceFor(final String name, final String content, final boolean isEval) { return new Source(name, baseName(name), new RawData(content, isEval)); }
Returns a Source instance
Params:
  • name – source name
  • content – contents as string
Returns:source instance
/** * Returns a Source instance * * @param name source name * @param content contents as string * @return source instance */
public static Source sourceFor(final String name, final String content) { return sourceFor(name, content, false); }
Constructor
Params:
  • name – source name
  • url – url from which source can be loaded
Throws:
Returns:source instance
/** * Constructor * * @param name source name * @param url url from which source can be loaded * * @return source instance * * @throws IOException if source cannot be loaded */
public static Source sourceFor(final String name, final URL url) throws IOException { return sourceFor(name, url, null); }
Constructor
Params:
  • name – source name
  • url – url from which source can be loaded
  • cs – Charset used to convert bytes to chars
Throws:
Returns:source instance
/** * Constructor * * @param name source name * @param url url from which source can be loaded * @param cs Charset used to convert bytes to chars * * @return source instance * * @throws IOException if source cannot be loaded */
public static Source sourceFor(final String name, final URL url, final Charset cs) throws IOException { return sourceFor(name, baseURL(url), new URLData(url, cs)); }
Constructor
Params:
  • name – source name
  • file – file from which source can be loaded
Throws:
Returns:source instance
/** * Constructor * * @param name source name * @param file file from which source can be loaded * * @return source instance * * @throws IOException if source cannot be loaded */
public static Source sourceFor(final String name, final File file) throws IOException { return sourceFor(name, file, null); }
Constructor
Params:
  • name – source name
  • path – path from which source can be loaded
Throws:
Returns:source instance
/** * Constructor * * @param name source name * @param path path from which source can be loaded * * @return source instance * * @throws IOException if source cannot be loaded */
public static Source sourceFor(final String name, final Path path) throws IOException { File file = null; try { file = path.toFile(); } catch (final UnsupportedOperationException uoe) { } if (file != null) { return sourceFor(name, file); } else { return sourceFor(name, Files.newBufferedReader(path)); } }
Constructor
Params:
  • name – source name
  • file – file from which source can be loaded
  • cs – Charset used to convert bytes to chars
Throws:
Returns:source instance
/** * Constructor * * @param name source name * @param file file from which source can be loaded * @param cs Charset used to convert bytes to chars * * @return source instance * * @throws IOException if source cannot be loaded */
public static Source sourceFor(final String name, final File file, final Charset cs) throws IOException { final File absFile = file.getAbsoluteFile(); return sourceFor(name, dirName(absFile, null), new FileData(file, cs)); }
Returns an instance
Params:
  • name – source name
  • reader – reader from which source can be loaded
Throws:
Returns:source instance
/** * Returns an instance * * @param name source name * @param reader reader from which source can be loaded * * @return source instance * * @throws IOException if source cannot be loaded */
public static Source sourceFor(final String name, final Reader reader) throws IOException { // Extract URL from URLReader to defer loading and reuse cached data if available. if (reader instanceof URLReader) { final URLReader urlReader = (URLReader) reader; return sourceFor(name, urlReader.getURL(), urlReader.getCharset()); } return new Source(name, baseName(name), new RawData(reader)); } @Override public boolean equals(final Object obj) { if (this == obj) { return true; } if (!(obj instanceof Source)) { return false; } final Source other = (Source) obj; return Objects.equals(name, other.name) && data.equals(other.data); } @Override public int hashCode() { int h = hash; if (h == 0) { h = hash = data.hashCode() ^ Objects.hashCode(name); } return h; }
Fetch source content.
Returns:Source content.
/** * Fetch source content. * @return Source content. */
public String getString() { return data.toString(); }
Get the user supplied name of this script.
Returns:User supplied source name.
/** * Get the user supplied name of this script. * @return User supplied source name. */
public String getName() { return name; }
Get the last modified time of this script.
Returns:Last modified time.
/** * Get the last modified time of this script. * @return Last modified time. */
public long getLastModified() { return data.lastModified(); }
Get the "directory" part of the file or "base" of the URL.
Returns:base of file or URL.
/** * Get the "directory" part of the file or "base" of the URL. * @return base of file or URL. */
public String getBase() { return base; }
Fetch a portion of source content.
Params:
  • start – start index in source
  • len – length of portion
Returns:Source content portion.
/** * Fetch a portion of source content. * @param start start index in source * @param len length of portion * @return Source content portion. */
public String getString(final int start, final int len) { return new String(data(), start, len); }
Fetch a portion of source content associated with a token.
Params:
  • token – Token descriptor.
Returns:Source content portion.
/** * Fetch a portion of source content associated with a token. * @param token Token descriptor. * @return Source content portion. */
public String getString(final long token) { final int start = Token.descPosition(token); final int len = Token.descLength(token); return new String(data(), start, len); }
Returns the source URL of this script Source. Can be null if Source was created from a String or a char[].
Returns:URL source or null
/** * Returns the source URL of this script Source. Can be null if Source * was created from a String or a char[]. * * @return URL source or null */
public URL getURL() { return data.url(); }
Get explicit source URL.
Returns:URL set via sourceURL directive
/** * Get explicit source URL. * @return URL set via sourceURL directive */
public String getExplicitURL() { return explicitURL; }
Set explicit source URL.
Params:
  • explicitURL – URL set via sourceURL directive
/** * Set explicit source URL. * @param explicitURL URL set via sourceURL directive */
public void setExplicitURL(final String explicitURL) { this.explicitURL = explicitURL; }
Returns whether this source was submitted via 'eval' call or not.
Returns:true if this source represents code submitted via 'eval'
/** * Returns whether this source was submitted via 'eval' call or not. * * @return true if this source represents code submitted via 'eval' */
public boolean isEvalCode() { return data.isEvalCode(); }
Find the beginning of the line containing position.
Params:
  • position – Index to offending token.
Returns:Index of first character of line.
/** * Find the beginning of the line containing position. * @param position Index to offending token. * @return Index of first character of line. */
private int findBOLN(final int position) { final char[] d = data(); for (int i = position - 1; i > 0; i--) { final char ch = d[i]; if (ch == '\n' || ch == '\r') { return i + 1; } } return 0; }
Find the end of the line containing position.
Params:
  • position – Index to offending token.
Returns:Index of last character of line.
/** * Find the end of the line containing position. * @param position Index to offending token. * @return Index of last character of line. */
private int findEOLN(final int position) { final char[] d = data(); final int length = d.length; for (int i = position; i < length; i++) { final char ch = d[i]; if (ch == '\n' || ch == '\r') { return i - 1; } } return length - 1; }
Return line number of character position.

This method can be expensive for large sources as it iterates through all characters up to position.

Params:
  • position – Position of character in source content.
Returns:Line number.
/** * Return line number of character position. * * <p>This method can be expensive for large sources as it iterates through * all characters up to {@code position}.</p> * * @param position Position of character in source content. * @return Line number. */
public int getLine(final int position) { final char[] d = data(); // Line count starts at 1. int line = 1; for (int i = 0; i < position; i++) { final char ch = d[i]; // Works for both \n and \r\n. if (ch == '\n') { line++; } } return line; }
Return column number of character position.
Params:
  • position – Position of character in source content.
Returns:Column number.
/** * Return column number of character position. * @param position Position of character in source content. * @return Column number. */
public int getColumn(final int position) { // TODO - column needs to account for tabs. return position - findBOLN(position); }
Return line text including character position.
Params:
  • position – Position of character in source content.
Returns:Line text.
/** * Return line text including character position. * @param position Position of character in source content. * @return Line text. */
public String getSourceLine(final int position) { // Find end of previous line. final int first = findBOLN(position); // Find end of this line. final int last = findEOLN(position); return new String(data(), first, last - first + 1); }
Get the content of this source as a char array. Note that the underlying array is returned instead of a clone; modifying the char array will cause modification to the source; this should not be done. While there is an apparent danger that we allow unfettered access to an underlying mutable array, the Source class is in a restricted jdk.nashorn.internal.* package and as such it is inaccessible by external actors in an environment with a security manager. Returning a clone would be detrimental to performance.
Returns:content the content of this source as a char array
/** * Get the content of this source as a char array. Note that the underlying array is returned instead of a * clone; modifying the char array will cause modification to the source; this should not be done. While * there is an apparent danger that we allow unfettered access to an underlying mutable array, the * {@code Source} class is in a restricted {@code jdk.nashorn.internal.*} package and as such it is * inaccessible by external actors in an environment with a security manager. Returning a clone would be * detrimental to performance. * @return content the content of this source as a char array */
public char[] getContent() { return data(); }
Get the length in chars for this source
Returns:length
/** * Get the length in chars for this source * @return length */
public int getLength() { return data.length(); }
Read all of the source until end of file. Return it as char array
Params:
  • reader – reader opened to source stream
Throws:
Returns:source as content
/** * Read all of the source until end of file. Return it as char array * * @param reader reader opened to source stream * @return source as content * @throws IOException if source could not be read */
public static char[] readFully(final Reader reader) throws IOException { final char[] arr = new char[BUF_SIZE]; final StringBuilder sb = new StringBuilder(); try { int numChars; while ((numChars = reader.read(arr, 0, arr.length)) > 0) { sb.append(arr, 0, numChars); } } finally { reader.close(); } return sb.toString().toCharArray(); }
Read all of the source until end of file. Return it as char array
Params:
  • file – source file
Throws:
Returns:source as content
/** * Read all of the source until end of file. Return it as char array * * @param file source file * @return source as content * @throws IOException if source could not be read */
public static char[] readFully(final File file) throws IOException { if (!file.isFile()) { throw new IOException(file + " is not a file"); //TODO localize? } return byteToCharArray(Files.readAllBytes(file.toPath())); }
Read all of the source until end of file. Return it as char array
Params:
  • file – source file
  • cs – Charset used to convert bytes to chars
Throws:
Returns:source as content
/** * Read all of the source until end of file. Return it as char array * * @param file source file * @param cs Charset used to convert bytes to chars * @return source as content * @throws IOException if source could not be read */
public static char[] readFully(final File file, final Charset cs) throws IOException { if (!file.isFile()) { throw new IOException(file + " is not a file"); //TODO localize? } final byte[] buf = Files.readAllBytes(file.toPath()); return (cs != null) ? new String(buf, cs).toCharArray() : byteToCharArray(buf); }
Read all of the source until end of stream from the given URL. Return it as char array
Params:
  • url – URL to read content from
Throws:
Returns:source as content
/** * Read all of the source until end of stream from the given URL. Return it as char array * * @param url URL to read content from * @return source as content * @throws IOException if source could not be read */
public static char[] readFully(final URL url) throws IOException { return readFully(url.openStream()); }
Read all of the source until end of file. Return it as char array
Params:
  • url – URL to read content from
  • cs – Charset used to convert bytes to chars
Throws:
Returns:source as content
/** * Read all of the source until end of file. Return it as char array * * @param url URL to read content from * @param cs Charset used to convert bytes to chars * @return source as content * @throws IOException if source could not be read */
public static char[] readFully(final URL url, final Charset cs) throws IOException { return readFully(url.openStream(), cs); }
Get a Base64-encoded SHA1 digest for this source.
Returns:a Base64-encoded SHA1 digest for this source
/** * Get a Base64-encoded SHA1 digest for this source. * * @return a Base64-encoded SHA1 digest for this source */
public String getDigest() { return new String(getDigestBytes(), StandardCharsets.US_ASCII); } private byte[] getDigestBytes() { byte[] ldigest = digest; if (ldigest == null) { final char[] content = data(); final byte[] bytes = new byte[content.length * 2]; for (int i = 0; i < content.length; i++) { bytes[i * 2] = (byte) (content[i] & 0x00ff); bytes[i * 2 + 1] = (byte) ((content[i] & 0xff00) >> 8); } try { final MessageDigest md = MessageDigest.getInstance("SHA-1"); if (name != null) { md.update(name.getBytes(StandardCharsets.UTF_8)); } if (base != null) { md.update(base.getBytes(StandardCharsets.UTF_8)); } if (getURL() != null) { md.update(getURL().toString().getBytes(StandardCharsets.UTF_8)); } digest = ldigest = BASE64.encode(md.digest(bytes)); } catch (final NoSuchAlgorithmException e) { throw new RuntimeException(e); } } return ldigest; }
Returns the base directory or URL for the given URL. Used to implement __DIR__.
Params:
  • url – a URL
Returns:base path or URL, or null if argument is not a hierarchical URL
/** * Returns the base directory or URL for the given URL. Used to implement __DIR__. * @param url a URL * @return base path or URL, or null if argument is not a hierarchical URL */
public static String baseURL(final URL url) { try { final URI uri = url.toURI(); if (uri.getScheme().equals("file")) { final Path path = Paths.get(uri); final Path parent = path.getParent(); return (parent != null) ? (parent + File.separator) : null; } if (uri.isOpaque() || uri.getPath() == null || uri.getPath().isEmpty()) { return null; } return uri.resolve("").toString(); } catch (final SecurityException | URISyntaxException | IOError e) { return null; } } private static String dirName(final File file, final String DEFAULT_BASE_NAME) { final String res = file.getParent(); return (res != null) ? (res + File.separator) : DEFAULT_BASE_NAME; } // fake directory like name private static String baseName(final String name) { int idx = name.lastIndexOf('/'); if (idx == -1) { idx = name.lastIndexOf('\\'); } return (idx != -1) ? name.substring(0, idx + 1) : null; } private static char[] readFully(final InputStream is, final Charset cs) throws IOException { return (cs != null) ? new String(readBytes(is), cs).toCharArray() : readFully(is); } public static char[] readFully(final InputStream is) throws IOException { return byteToCharArray(readBytes(is)); } private static char[] byteToCharArray(final byte[] bytes) { Charset cs = StandardCharsets.UTF_8; int start = 0; // BOM detection. if (bytes.length > 1 && bytes[0] == (byte) 0xFE && bytes[1] == (byte) 0xFF) { start = 2; cs = StandardCharsets.UTF_16BE; } else if (bytes.length > 1 && bytes[0] == (byte) 0xFF && bytes[1] == (byte) 0xFE) { if (bytes.length > 3 && bytes[2] == 0 && bytes[3] == 0) { start = 4; cs = Charset.forName("UTF-32LE"); } else { start = 2; cs = StandardCharsets.UTF_16LE; } } else if (bytes.length > 2 && bytes[0] == (byte) 0xEF && bytes[1] == (byte) 0xBB && bytes[2] == (byte) 0xBF) { start = 3; cs = StandardCharsets.UTF_8; } else if (bytes.length > 3 && bytes[0] == 0 && bytes[1] == 0 && bytes[2] == (byte) 0xFE && bytes[3] == (byte) 0xFF) { start = 4; cs = Charset.forName("UTF-32BE"); } return new String(bytes, start, bytes.length - start, cs).toCharArray(); } static byte[] readBytes(final InputStream is) throws IOException { final byte[] arr = new byte[BUF_SIZE]; try { try (ByteArrayOutputStream buf = new ByteArrayOutputStream()) { int numBytes; while ((numBytes = is.read(arr, 0, arr.length)) > 0) { buf.write(arr, 0, numBytes); } return buf.toByteArray(); } } finally { is.close(); } } @Override public String toString() { return getName(); } private static URL getURLFromFile(final File file) { try { return file.toURI().toURL(); } catch (final SecurityException | MalformedURLException ignored) { return null; } } private static DebugLogger getLoggerStatic() { final Context context = Context.getContextTrustedOrNull(); return context == null ? null : context.getLogger(Source.class); } @Override public DebugLogger initLogger(final Context context) { return context.getLogger(this.getClass()); } @Override public DebugLogger getLogger() { return initLogger(Context.getContextTrusted()); } private File dumpFile(final File dirFile) { final URL u = getURL(); final StringBuilder buf = new StringBuilder(); // make it unique by prefixing current date & time buf.append(LocalDateTime.now().toString()); buf.append('_'); if (u != null) { // make it a safe file name buf.append(u.toString() .replace('/', '_') .replace('\\', '_')); } else { buf.append(getName()); } return new File(dirFile, buf.toString()); } void dump(final String dir) { final File dirFile = new File(dir); final File file = dumpFile(dirFile); if (!dirFile.exists() && !dirFile.mkdirs()) { debug("Skipping source dump for " + name); return; } try (final FileOutputStream fos = new FileOutputStream(file)) { final PrintWriter pw = new PrintWriter(fos); pw.print(data.toString()); pw.flush(); } catch (final IOException ioExp) { debug("Skipping source dump for " + name + ": " + ECMAErrors.getMessage( "io.error.cant.write", dir + " : " + ioExp.toString())); } } }