[Android] Move CommandLine.java to base

content/public/android/java/src/org/chromium/content/common/CommandLine.java

Index: content/public/android/java/src/org/chromium/content/common/CommandLine.java
diff --git a/content/public/android/java/src/org/chromium/content/common/CommandLine.java b/content/public/android/java/src/org/chromium/content/common/CommandLine.java
deleted file mode 100644
index be33eccfa34f8b5fc5e8f0c85fb48acd84b6ec40..0000000000000000000000000000000000000000
--- a/content/public/android/java/src/org/chromium/content/common/CommandLine.java
+++ /dev/null
@@ -1,438 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.content.common;
-
-import android.text.TextUtils;
-import android.util.Log;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.io.Reader;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.concurrent.atomic.AtomicReference;
-
-/**
- * Java mirror of Chrome command-line utilities (e.g. class CommandLine from base/command_line.h).
- * Command line program adb_command_line can be used to set the Chrome command line:
- * adb shell "echo chrome --my-param > /data/local/chrome-command-line"
- */
-public abstract class CommandLine {
-    // Block onCreate() of Chrome until a Java debugger is attached.
-    public static final String WAIT_FOR_JAVA_DEBUGGER = "wait-for-java-debugger";
-
-    // Tell Java to use the official command line, loaded from the
-    // official-command-line.xml files.  WARNING this is not done
-    // immediately on startup, so early running Java code will not see
-    // these flags.
-    public static final String ADD_OFFICIAL_COMMAND_LINE = "add-official-command-line";
-
-    // Enables test intent handling.
-    public static final String ENABLE_TEST_INTENTS = "enable-test-intents";
-
-    // Adds additional thread idle time information into the trace event output.
-    public static final String ENABLE_IDLE_TRACING = "enable-idle-tracing";
-
-    // Dump frames-per-second to the log
-    public static final String LOG_FPS = "log-fps";
-
-    // Whether Chromium should use a mobile user agent.
-    public static final String USE_MOBILE_UA = "use-mobile-user-agent";
-
-    // tablet specific UI components.
-    // Native switch - chrome_switches::kTabletUI
-    public static final String TABLET_UI = "tablet-ui";
-
-    // Change the url of the JavaScript that gets injected when accessibility mode is enabled.
-    public static final String ACCESSIBILITY_JAVASCRIPT_URL = "accessibility-js-url";
-
-    public static final String ACCESSIBILITY_DEBUG_BRAILLE_SERVICE = "debug-braille-service";
-
-    // Sets the ISO country code that will be used for phone number detection.
-    public static final String NETWORK_COUNTRY_ISO = "network-country-iso";
-
-    // Whether to enable the auto-hiding top controls.
-    public static final String ENABLE_TOP_CONTROLS_POSITION_CALCULATION
-            = "enable-top-controls-position-calculation";
-
-    // The height of the movable top controls.
-    public static final String TOP_CONTROLS_HEIGHT = "top-controls-height";
-
-    // How much of the top controls need to be shown before they will auto show.
-    public static final String TOP_CONTROLS_SHOW_THRESHOLD = "top-controls-show-threshold";
-
-    // How much of the top controls need to be hidden before they will auto hide.
-    public static final String TOP_CONTROLS_HIDE_THRESHOLD = "top-controls-hide-threshold";
-
-    // Native switch - chrome_switches::kEnableInstantExtendedAPI
-    public static final String ENABLE_INSTANT_EXTENDED_API = "enable-instant-extended-api";
-
-    // Native switch - content_switches::kEnableSpeechRecognition
-    public static final String ENABLE_SPEECH_RECOGNITION = "enable-speech-recognition";
-
-    // Native switch - shell_switches::kDumpRenderTree
-    public static final String DUMP_RENDER_TREE = "dump-render-tree";
-
-    // Native switch - chrome_switches::kDisablePopupBlocking
-    public static final String DISABLE_POPUP_BLOCKING = "disable-popup-blocking";
-
-    // Whether to disable the click delay by sending click events during double tap
-    public static final String DISABLE_CLICK_DELAY = "disable-click-delay";
-
-    // Public abstract interface, implemented in derived classes.
-    // All these methods reflect their native-side counterparts.
-    /**
-     *  Returns true if this command line contains the given switch.
-     *  (Switch names ARE case-sensitive).
-     */
-    public abstract boolean hasSwitch(String switchString);
-
-    /**
-     * Return the value associated with the given switch, or null.
-     * @param switchString The switch key to lookup. It should NOT start with '--' !
-     * @return switch value, or null if the switch is not set or set to empty.
-     */
-    public abstract String getSwitchValue(String switchString);
-
-    /**
-     * Return the value associated with the given switch, or {@code defaultValue} if the switch
-     * was not specified.
-     * @param switchString The switch key to lookup. It should NOT start with '--' !
-     * @param defaultValue The default value to return if the switch isn't set.
-     * @return Switch value, or {@code defaultValue} if the switch is not set or set to empty.
-     */
-    public String getSwitchValue(String switchString, String defaultValue) {
-        String value = getSwitchValue(switchString);
-        return TextUtils.isEmpty(value) ? defaultValue : value;
-    }
-
-    /**
-     * Append a switch to the command line.  There is no guarantee
-     * this action happens before the switch is needed.
-     * @param switchString the switch to add.  It should NOT start with '--' !
-     */
-    public abstract void appendSwitch(String switchString);
-
-    /**
-     * Append a switch and value to the command line.  There is no
-     * guarantee this action happens before the switch is needed.
-     * @param switchString the switch to add.  It should NOT start with '--' !
-     * @param value the value for this switch.
-     * For example, --foo=bar becomes 'foo', 'bar'.
-     */
-    public abstract void appendSwitchWithValue(String switchString, String value);
-
-    /**
-     * Append switch/value items in "command line" format (excluding argv[0] program name).
-     * E.g. { '--gofast', '--username=fred' }
-     * @param array an array of switch or switch/value items in command line format.
-     *   Unlike the other append routines, these switches SHOULD start with '--' .
-     *   Unlike init(), this does not include the program name in array[0].
-     */
-    public abstract void appendSwitchesAndArguments(String[] array);
-
-    /**
-     * Determine if the command line is bound to the native (JNI) implementation.
-     * @return true if the underlying implementation is delegating to the native command line.
-     */
-    public boolean isNativeImplementation() {
-        return false;
-    }
-
-    private static final AtomicReference<CommandLine> sCommandLine =
-        new AtomicReference<CommandLine>();
-
-    /**
-     * @returns true if the command line has already been initialized.
-     */
-    public static boolean isInitialized() {
-        return sCommandLine.get() != null;
-    }
-
-    // Equivalent to CommandLine::ForCurrentProcess in C++.
-    public static CommandLine getInstance() {
-        CommandLine commandLine = sCommandLine.get();
-        assert commandLine != null;
-        return commandLine;
-    }
-
-    /**
-     * Initialize the singleton instance, must be called exactly once (either directly or
-     * via one of the convenience wrappers below) before using the static singleton instance.
-     * @param args command line flags in 'argv' format: args[0] is the program name.
-     */
-    public static void init(String[] args) {
-        setInstance(new JavaCommandLine(args));
-    }
-
-    /**
-     * Initialize the command line from the command-line file.
-     *
-     * @param file The fully qualified command line file.
-     */
-    public static void initFromFile(String file) {
-        // Arbitrary clamp of 8k on the amount of file we read in.
-        char[] buffer = readUtf8FileFully(file, 8 * 1024);
-        init(buffer == null ? null : tokenizeQuotedAruments(buffer));
-    }
-
-    /**
-     * Resets both the java proxy and the native command lines. This allows the entire
-     * command line initialization to be re-run including the call to onJniLoaded.
-     */
-    public static void reset() {
-        setInstance(null);
-    }
-
-    /**
-     * Public for testing (TODO: why are the tests in a different package?)
-     * Parse command line flags from a flat buffer, supporting double-quote enclosed strings
-     * containing whitespace. argv elements are derived by splitting the buffer on whitepace;
-     * double quote characters may enclose tokens containing whitespace; a double-quote literal
-     * may be escaped with back-slash. (Otherwise backslash is taken as a literal).
-     * @param buffer A command line in command line file format as described above.
-     * @return the tokenized arguments, suitable for passing to init().
-     */
-    public static String[] tokenizeQuotedAruments(char[] buffer) {
-        ArrayList<String> args = new ArrayList<String>();
-        StringBuilder arg = null;
-        final char noQuote = '\0';
-        final char singleQuote = '\'';
-        final char doubleQuote = '"';
-        char currentQuote = noQuote;
-        for (char c : buffer) {
-            // Detect start or end of quote block.
-            if ((currentQuote == noQuote && (c == singleQuote || c == doubleQuote)) ||
-                c == currentQuote) {
-                if (arg != null && arg.length() > 0 && arg.charAt(arg.length() - 1) == '\\') {
-                    // Last char was a backslash; pop it, and treat c as a literal.
-                    arg.setCharAt(arg.length() - 1, c);
-                } else {
-                    currentQuote = currentQuote == noQuote ? c : noQuote;
-                }
-            } else if (currentQuote == noQuote && Character.isWhitespace(c)) {
-                if (arg != null) {
-                    args.add(arg.toString());
-                    arg = null;
-                }
-            } else {
-                if (arg == null) arg = new StringBuilder();
-                arg.append(c);
-            }
-        }
-        if (arg != null) {
-            if (currentQuote != noQuote) {
-                Log.w(TAG, "Unterminated quoted string: " + arg);
-            }
-            args.add(arg.toString());
-        }
-        return args.toArray(new String[args.size()]);
-    }
-
-    private static final String TAG = "CommandLine";
-    private static final String SWITCH_PREFIX = "--";
-    private static final String SWITCH_TERMINATOR = SWITCH_PREFIX;
-    private static final String SWITCH_VALUE_SEPARATOR = "=";
-
-    public static void enableNativeProxy() {
-        // Make a best-effort to ensure we make a clean (atomic) switch over from the old to
-        // the new command line implementation. If another thread is modifying the command line
-        // when this happens, all bets are off. (As per the native CommandLine).
-        sCommandLine.set(new NativeCommandLine());
-    }
-
-    public static String[] getJavaSwitchesOrNull() {
-        CommandLine commandLine = sCommandLine.get();
-        if (commandLine != null) {
-            assert !commandLine.isNativeImplementation();
-            return ((JavaCommandLine) commandLine).getCommandLineArguments();
-        }
-        return null;
-    }
-
-    private static void setInstance(CommandLine commandLine) {
-        CommandLine oldCommandLine = sCommandLine.getAndSet(commandLine);
-        if (oldCommandLine != null && oldCommandLine.isNativeImplementation()) {
-            nativeReset();
-        }
-    }
-
-    /**
-     * @param fileName the file to read in.
-     * @param sizeLimit cap on the file size.
-     * @return Array of chars read from the file, or null if the file cannot be read
-     *         or if its length exceeds |sizeLimit|.
-     */
-    private static char[] readUtf8FileFully(String fileName, int sizeLimit) {
-        Reader reader = null;
-        File f = new File(fileName);
-        long fileLength = f.length();
-
-        if (fileLength == 0) {
-            return null;
-        }
-
-        if (fileLength > sizeLimit) {
-            Log.w(TAG, "File " + fileName + " length " + fileLength + " exceeds limit "
-                    + sizeLimit);
-            return null;
-        }
-
-        try {
-            char[] buffer = new char[(int) fileLength];
-            reader = new InputStreamReader(new FileInputStream(f), "UTF-8");
-            int charsRead = reader.read(buffer);
-            // Debug check that we've exhausted the input stream (will fail e.g. if the
-            // file grew after we inspected its length).
-            assert !reader.ready();
-            return charsRead < buffer.length ? Arrays.copyOfRange(buffer, 0, charsRead) : buffer;
-        } catch (FileNotFoundException e) {
-            return null;
-        } catch (IOException e) {
-            return null;
-        } finally {
-            try {
-                if (reader != null) reader.close();
-            } catch (IOException e) {
-                Log.e(TAG, "Unable to close file reader.", e);
-            }
-        }
-    }
-
-    private CommandLine() {}
-
-    private static class JavaCommandLine extends CommandLine {
-        private HashMap<String, String> mSwitches = new HashMap<String, String>();
-        private ArrayList<String> mArgs = new ArrayList<String>();
-
-        // The arguments begin at index 1, since index 0 contains the executable name.
-        private int mArgsBegin = 1;
-
-        JavaCommandLine(String[] args) {
-            if (args == null || args.length == 0 || args[0] == null) {
-                mArgs.add("");
-            } else {
-                mArgs.add(args[0]);
-                appendSwitchesInternal(args, 1);
-            }
-            // Invariant: we always have the argv[0] program name element.
-            assert mArgs.size() > 0;
-        }
-
-        /**
-         * Returns the switches and arguments passed into the program, with switches and their
-         * values coming before all of the arguments.
-         */
-        private String[] getCommandLineArguments() {
-            return mArgs.toArray(new String[mArgs.size()]);
-        }
-
-        @Override
-        public boolean hasSwitch(String switchString) {
-            return mSwitches.containsKey(switchString);
-        }
-
-        @Override
-        public String getSwitchValue(String switchString) {
-            // This is slightly round about, but needed for consistency with the NativeCommandLine
-            // version which does not distinguish empty values from key not present.
-            String value = mSwitches.get(switchString);
-            return value == null || value.isEmpty() ? null : value;
-        }
-
-        @Override
-        public void appendSwitch(String switchString) {
-            appendSwitchWithValue(switchString, null);
-        }
-
-        /**
-         * Appends a switch to the current list.
-         * @param switchString the switch to add.  It should NOT start with '--' !
-         * @param value the value for this switch.
-         */
-        @Override
-        public void appendSwitchWithValue(String switchString, String value) {
-            mSwitches.put(switchString, value == null ? "" : value);
-
-            // Append the switch and update the switches/arguments divider mArgsBegin.
-            String combinedSwitchString = SWITCH_PREFIX + switchString;
-            if (value != null && !value.isEmpty())
-                combinedSwitchString += SWITCH_VALUE_SEPARATOR + value;
-
-            mArgs.add(mArgsBegin++, combinedSwitchString);
-        }
-
-        @Override
-        public void appendSwitchesAndArguments(String[] array) {
-            appendSwitchesInternal(array, 0);
-        }
-
-        // Add the specified arguments, but skipping the first |skipCount| elements.
-        private void appendSwitchesInternal(String[] array, int skipCount) {
-            boolean parseSwitches = true;
-            for (String arg : array) {
-                if (skipCount > 0) {
-                    --skipCount;
-                    continue;
-                }
-
-                if (arg.equals(SWITCH_TERMINATOR)) {
-                    parseSwitches = false;
-                }
-
-                if (parseSwitches && arg.startsWith(SWITCH_PREFIX)) {
-                    String[] parts = arg.split(SWITCH_VALUE_SEPARATOR, 2);
-                    String value = parts.length > 1 ? parts[1] : null;
-                    appendSwitchWithValue(parts[0].substring(SWITCH_PREFIX.length()), value);
-                } else {
-                    mArgs.add(arg);
-                }
-            }
-        }
-    }
-
-    private static class NativeCommandLine extends CommandLine {
-        @Override
-        public boolean hasSwitch(String switchString) {
-            return nativeHasSwitch(switchString);
-        }
-
-        @Override
-        public String getSwitchValue(String switchString) {
-            return nativeGetSwitchValue(switchString);
-        }
-
-        @Override
-        public void appendSwitch(String switchString) {
-            nativeAppendSwitch(switchString);
-        }
-
-        @Override
-        public void appendSwitchWithValue(String switchString, String value) {
-            nativeAppendSwitchWithValue(switchString, value);
-        }
-
-        @Override
-        public void appendSwitchesAndArguments(String[] array) {
-            nativeAppendSwitchesAndArguments(array);
-        }
-
-        @Override
-        public boolean isNativeImplementation() {
-            return true;
-        }
-    }
-
-    private static native void nativeReset();
-    private static native boolean nativeHasSwitch(String switchString);
-    private static native String nativeGetSwitchValue(String switchString);
-    private static native void nativeAppendSwitch(String switchString);
-    private static native void nativeAppendSwitchWithValue(String switchString, String value);
-    private static native void nativeAppendSwitchesAndArguments(String[] array);
-};