author | prr |
Mon, 10 Dec 2018 12:33:23 -0800 | |
changeset 52970 | c57f1850d44f |
parent 52837 | 84cc04e403ab |
child 52971 | 8e26761a2c2e |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package jdk.internal.util; |
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import java.lang.annotation.Native; |
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import java.util.Properties; |
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/** |
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* System Property initialization for internal use only |
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* Retrieves the platform, JVM, and command line properties, |
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* applies initial defaults and returns the Properties instance |
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* that becomes the System.getProperties instance. |
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*/ |
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public final class SystemProps { |
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// no instances |
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private SystemProps() {} |
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/** |
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* Create and initialize the system properties from the native properties |
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* and command line properties. |
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* Note: Build-defined properties such as versions and vendor information |
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* are initialized by VersionProps.java-template. |
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* |
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* @return a Properties instance initialized with all of the properties |
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*/ |
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public static Properties initProperties() { |
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// Initially, cmdProperties only includes -D and props from the VM |
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Raw raw = new Raw(); |
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Properties props = raw.cmdProperties(); |
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String javaHome = props.getProperty("java.home"); |
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assert javaHome != null : "java.home not set"; |
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putIfAbsent(props, "user.home", raw.propDefault(Raw._user_home_NDX)); |
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putIfAbsent(props, "user.dir", raw.propDefault(Raw._user_dir_NDX)); |
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putIfAbsent(props, "user.name", raw.propDefault(Raw._user_name_NDX)); |
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// Platform defined encoding cannot be overridden on the command line |
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put(props, "sun.jnu.encoding", raw.propDefault(Raw._sun_jnu_encoding_NDX)); |
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// Add properties that have not been overridden on the cmdline |
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putIfAbsent(props, "file.encoding", |
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((raw.propDefault(Raw._file_encoding_NDX) == null) |
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? raw.propDefault(Raw._sun_jnu_encoding_NDX) |
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: raw.propDefault(Raw._file_encoding_NDX))); |
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// Use platform values if not overridden by a commandline -Dkey=value |
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// In no particular order |
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putIfAbsent(props, "os.name", raw.propDefault(Raw._os_name_NDX)); |
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putIfAbsent(props, "os.arch", raw.propDefault(Raw._os_arch_NDX)); |
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putIfAbsent(props, "os.version", raw.propDefault(Raw._os_version_NDX)); |
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putIfAbsent(props, "line.separator", raw.propDefault(Raw._line_separator_NDX)); |
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putIfAbsent(props, "file.separator", raw.propDefault(Raw._file_separator_NDX)); |
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putIfAbsent(props, "path.separator", raw.propDefault(Raw._path_separator_NDX)); |
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putIfAbsent(props, "java.io.tmpdir", raw.propDefault(Raw._java_io_tmpdir_NDX)); |
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putIfAbsent(props, "http.proxyHost", raw.propDefault(Raw._http_proxyHost_NDX)); |
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putIfAbsent(props, "http.proxyPort", raw.propDefault(Raw._http_proxyPort_NDX)); |
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putIfAbsent(props, "https.proxyHost", raw.propDefault(Raw._https_proxyHost_NDX)); |
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putIfAbsent(props, "https.proxyPort", raw.propDefault(Raw._https_proxyPort_NDX)); |
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putIfAbsent(props, "ftp.proxyHost", raw.propDefault(Raw._ftp_proxyHost_NDX)); |
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putIfAbsent(props, "ftp.proxyPort", raw.propDefault(Raw._ftp_proxyPort_NDX)); |
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putIfAbsent(props, "socksProxyHost", raw.propDefault(Raw._socksProxyHost_NDX)); |
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putIfAbsent(props, "socksProxyPort", raw.propDefault(Raw._socksProxyPort_NDX)); |
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putIfAbsent(props, "http.nonProxyHosts", raw.propDefault(Raw._http_nonProxyHosts_NDX)); |
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putIfAbsent(props, "ftp.nonProxyHosts", raw.propDefault(Raw._ftp_nonProxyHosts_NDX)); |
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putIfAbsent(props, "socksNonProxyHosts", raw.propDefault(Raw._socksNonProxyHosts_NDX)); |
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putIfAbsent(props, "awt.toolkit", raw.propDefault(Raw._awt_toolkit_NDX)); |
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putIfAbsent(props, "java.awt.headless", raw.propDefault(Raw._java_awt_headless_NDX)); |
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putIfAbsent(props, "java.awt.graphicsenv", raw.propDefault(Raw._java_awt_graphicsenv_NDX)); |
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putIfAbsent(props, "sun.desktop", raw.propDefault(Raw._sun_desktop_NDX)); |
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putIfAbsent(props, "sun.arch.abi", raw.propDefault(Raw._sun_arch_abi_NDX)); |
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putIfAbsent(props, "sun.arch.data.model", raw.propDefault(Raw._sun_arch_data_model_NDX)); |
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putIfAbsent(props, "sun.os.patch.level", raw.propDefault(Raw._sun_os_patch_level_NDX)); |
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putIfAbsent(props, "sun.stdout.encoding", raw.propDefault(Raw._sun_stdout_encoding_NDX)); |
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putIfAbsent(props, "sun.stderr.encoding", raw.propDefault(Raw._sun_stderr_encoding_NDX)); |
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putIfAbsent(props, "sun.io.unicode.encoding", raw.propDefault(Raw._sun_io_unicode_encoding_NDX)); |
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putIfAbsent(props, "sun.cpu.isalist", raw.propDefault(Raw._sun_cpu_isalist_NDX)); |
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putIfAbsent(props, "sun.cpu.endian", raw.propDefault(Raw._sun_cpu_endian_NDX)); |
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/* Construct i18n related options */ |
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fillI18nProps(props,"user.language", raw.propDefault(Raw._display_language_NDX), |
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raw.propDefault(Raw._format_language_NDX)); |
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fillI18nProps(props,"user.script", raw.propDefault(Raw._display_script_NDX), |
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raw.propDefault(Raw._format_script_NDX)); |
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fillI18nProps(props,"user.country", raw.propDefault(Raw._display_country_NDX), |
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raw.propDefault(Raw._format_country_NDX)); |
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fillI18nProps(props,"user.variant", raw.propDefault(Raw._display_variant_NDX), |
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raw.propDefault(Raw._format_variant_NDX)); |
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return props; |
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} |
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/** |
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* Puts the property if it is non-null |
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* @param props the Properties |
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* @param key the key |
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* @param value the value |
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*/ |
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private static void put(Properties props, String key, String value) { |
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if (value != null) { |
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props.put(key, value); |
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} |
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} |
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|
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/** |
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* Puts the property if it is non-null and is not already in the Properties. |
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* @param props the Properties |
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* @param key the key |
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* @param value the value |
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*/ |
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private static void putIfAbsent(Properties props, String key, String value) { |
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if (value != null) { |
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props.putIfAbsent(key, value); |
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} |
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} |
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|
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/** |
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* For internationalization options, compute the values for |
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* display and format properties |
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* MUST NOT override command line defined values. |
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* |
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* @param base the base property name |
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* @param display the display value for the base |
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* @param format the format value for the base |
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*/ |
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private static void fillI18nProps(Properties cmdProps, String base, String display, |
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String format) { |
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// Do not override command line setting |
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String baseValue = cmdProps.getProperty(base); |
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if (baseValue == null) { |
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// Not overridden on the command line; define the properties if there are platform defined values |
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baseValue = display; |
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} |
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if (baseValue != null) { |
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cmdProps.put(base, baseValue); |
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} |
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|
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/* user.xxx.display property */ |
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String disp = base + ".display"; |
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String dispValue = cmdProps.getProperty(disp); |
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if (dispValue == null && display != null && !display.equals(baseValue)) { |
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// Create the property only if different from the base property |
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cmdProps.put(disp, display); |
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} |
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|
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/* user.xxx.format property */ |
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String fmt = base + ".format"; |
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String fmtValue = cmdProps.getProperty(fmt); |
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if (fmtValue == null && format != null && !format.equals(baseValue)) { |
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// Create the property only if different than the base property |
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cmdProps.put(fmt, format); |
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} |
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} |
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|
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/** |
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* Read the raw properties from native System.c. |
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*/ |
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public static class Raw { |
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// Array indices written by native vmProperties() |
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// The order is arbitrary (but alphabetic for convenience) |
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@Native private static final int _awt_toolkit_NDX = 0; |
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@Native private static final int _display_country_NDX = 1 + _awt_toolkit_NDX; |
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@Native private static final int _display_language_NDX = 1 + _display_country_NDX; |
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@Native private static final int _display_script_NDX = 1 + _display_language_NDX; |
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@Native private static final int _display_variant_NDX = 1 + _display_script_NDX; |
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@Native private static final int _file_encoding_NDX = 1 + _display_variant_NDX; |
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@Native private static final int _file_separator_NDX = 1 + _file_encoding_NDX; |
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@Native private static final int _format_country_NDX = 1 + _file_separator_NDX; |
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@Native private static final int _format_language_NDX = 1 + _format_country_NDX; |
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@Native private static final int _format_script_NDX = 1 + _format_language_NDX; |
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@Native private static final int _format_variant_NDX = 1 + _format_script_NDX; |
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@Native private static final int _ftp_nonProxyHosts_NDX = 1 + _format_variant_NDX; |
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@Native private static final int _ftp_proxyHost_NDX = 1 + _ftp_nonProxyHosts_NDX; |
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@Native private static final int _ftp_proxyPort_NDX = 1 + _ftp_proxyHost_NDX; |
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@Native private static final int _http_nonProxyHosts_NDX = 1 + _ftp_proxyPort_NDX; |
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@Native private static final int _http_proxyHost_NDX = 1 + _http_nonProxyHosts_NDX; |
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@Native private static final int _http_proxyPort_NDX = 1 + _http_proxyHost_NDX; |
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@Native private static final int _https_proxyHost_NDX = 1 + _http_proxyPort_NDX; |
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@Native private static final int _https_proxyPort_NDX = 1 + _https_proxyHost_NDX; |
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@Native private static final int _java_awt_graphicsenv_NDX = 1 + _https_proxyPort_NDX; |
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@Native private static final int _java_awt_headless_NDX = 1 + _java_awt_graphicsenv_NDX; |
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@Native private static final int _java_io_tmpdir_NDX = 1 + _java_awt_headless_NDX; |
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@Native private static final int _line_separator_NDX = 1 + _java_io_tmpdir_NDX; |
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@Native private static final int _os_arch_NDX = 1 + _line_separator_NDX; |
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@Native private static final int _os_name_NDX = 1 + _os_arch_NDX; |
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@Native private static final int _os_version_NDX = 1 + _os_name_NDX; |
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@Native private static final int _path_separator_NDX = 1 + _os_version_NDX; |
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@Native private static final int _socksNonProxyHosts_NDX = 1 + _path_separator_NDX; |
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@Native private static final int _socksProxyHost_NDX = 1 + _socksNonProxyHosts_NDX; |
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@Native private static final int _socksProxyPort_NDX = 1 + _socksProxyHost_NDX; |
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@Native private static final int _sun_arch_abi_NDX = 1 + _socksProxyPort_NDX; |
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@Native private static final int _sun_arch_data_model_NDX = 1 + _sun_arch_abi_NDX; |
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@Native private static final int _sun_cpu_endian_NDX = 1 + _sun_arch_data_model_NDX; |
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@Native private static final int _sun_cpu_isalist_NDX = 1 + _sun_cpu_endian_NDX; |
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@Native private static final int _sun_desktop_NDX = 1 + _sun_cpu_isalist_NDX; |
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@Native private static final int _sun_io_unicode_encoding_NDX = 1 + _sun_desktop_NDX; |
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@Native private static final int _sun_jnu_encoding_NDX = 1 + _sun_io_unicode_encoding_NDX; |
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@Native private static final int _sun_os_patch_level_NDX = 1 + _sun_jnu_encoding_NDX; |
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@Native private static final int _sun_stderr_encoding_NDX = 1 + _sun_os_patch_level_NDX; |
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@Native private static final int _sun_stdout_encoding_NDX = 1 + _sun_stderr_encoding_NDX; |
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@Native private static final int _user_dir_NDX = 1 + _sun_stdout_encoding_NDX; |
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@Native private static final int _user_home_NDX = 1 + _user_dir_NDX; |
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@Native private static final int _user_name_NDX = 1 + _user_home_NDX; |
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@Native private static final int FIXED_LENGTH = 1 + _user_name_NDX; |
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|
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// Array of Strings returned from the VM and Command line properties |
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// The array is not used after initialization is complete. |
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private final String[] platformProps; |
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|
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private Raw() { |
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platformProps = platformProperties(); |
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} |
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|
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/** |
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* Return the value for a well known default from native. |
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* @param index the index of the known property |
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* @return the value |
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*/ |
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String propDefault(int index) { |
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return platformProps[index]; |
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} |
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/** |
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* Return a Properties instance of the command line and VM options |
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* defined by name and value. |
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* The Properties instance is sized to include the fixed properties. |
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* |
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* @return return a Properties instance of the command line and VM options |
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*/ |
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private Properties cmdProperties() { |
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String[] vmProps = vmProperties(); |
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int nProps = vmProps.length / 2; |
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var cmdProps = new Properties(nProps + Raw.FIXED_LENGTH); |
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for (int i = 0; i < nProps; i++) { |
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String k = vmProps[i * 2]; |
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if (k != null) { |
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String v = vmProps[i * 2 + 1]; |
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cmdProps.setProperty(k, v != null ? v : ""); |
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} else { |
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// no more key/value pairs |
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break; |
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} |
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} |
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return cmdProps; |
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} |
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/** |
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* Returns the available VM and Command Line Properties. |
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* The VM supplies some key/value pairs and processes the command line |
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* to extract key/value pairs from the {@code "-Dkey=value"} arguments. |
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* |
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* @return an array of strings, with alternating key and value strings. |
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* Either keys or values may be null, the array may not be full. |
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* The first null key indicates there are no more key, value pairs. |
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*/ |
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private static native String[] vmProperties(); |
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|
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/** |
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* Returns the platform specific property values identified |
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* by {@code "_xxx_NDX"} indexes. |
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* The indexes are strictly private, to be shared only with the native code. |
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* |
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* @return a array of strings, the properties are indexed by the {@code _xxx_NDX} |
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* indexes. The values are Strings and may be null. |
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*/ |
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private static native String[] platformProperties(); |
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} |
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} |