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/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.sdklib.internal.repository.sources;
import com.android.prefs.AndroidLocation;
import com.android.prefs.AndroidLocation.AndroidLocationException;
import com.android.sdklib.repository.SdkSysImgConstants;
import com.android.utils.ILogger;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.EnumMap;
import java.util.Iterator;
import java.util.Properties;
import java.util.Map.Entry;
/**
* A list of sdk-repository and sdk-addon sources, sorted by {@link SdkSourceCategory}.
*/
public class SdkSources {
private static final String KEY_COUNT = "count";
private static final String KEY_SRC = "src";
private static final String SRC_FILENAME = "repositories.cfg"; //$NON-NLS-1$
private final EnumMap> mSources =
new EnumMap>(SdkSourceCategory.class);
private ArrayList mChangeListeners; // lazily initialized
public SdkSources() {
}
/**
* Adds a new source to the Sources list.
*
* Implementation detail: {@link SdkSources} doesn't invoke {@link #notifyChangeListeners()}
* directly. Callers who use {@code add()} are responsible for notifying the listeners once
* they are done modifying the sources list. The intent is to notify the listeners only once
* at the end, not for every single addition.
*/
public void add(SdkSourceCategory category, SdkSource source) {
synchronized (mSources) {
ArrayList list = mSources.get(category);
if (list == null) {
list = new ArrayList();
mSources.put(category, list);
}
list.add(source);
}
}
/**
* Removes a source from the Sources list.
*
* Callers who remove entries are responsible for notifying the listeners using
* {@link #notifyChangeListeners()} once they are done modifying the sources list.
*/
public void remove(SdkSource source) {
synchronized (mSources) {
Iterator>> it =
mSources.entrySet().iterator();
while (it.hasNext()) {
Entry> entry = it.next();
ArrayList list = entry.getValue();
if (list.remove(source)) {
if (list.isEmpty()) {
// remove the entry since the source list became empty
it.remove();
}
}
}
}
}
/**
* Removes all the sources in the given category.
*
* Callers who remove entries are responsible for notifying the listeners using
* {@link #notifyChangeListeners()} once they are done modifying the sources list.
*/
public void removeAll(SdkSourceCategory category) {
synchronized (mSources) {
mSources.remove(category);
}
}
/**
* Returns a set of all categories that must be displayed. This includes all
* categories that are to be always displayed as well as all categories which
* have at least one source.
* Might return a empty array, but never returns null.
*/
public SdkSourceCategory[] getCategories() {
ArrayList cats = new ArrayList();
for (SdkSourceCategory cat : SdkSourceCategory.values()) {
if (cat.getAlwaysDisplay()) {
cats.add(cat);
} else {
synchronized (mSources) {
ArrayList list = mSources.get(cat);
if (list != null && !list.isEmpty()) {
cats.add(cat);
}
}
}
}
return cats.toArray(new SdkSourceCategory[cats.size()]);
}
/**
* Returns a new array of sources attached to the given category.
* Might return an empty array, but never returns null.
*/
public SdkSource[] getSources(SdkSourceCategory category) {
synchronized (mSources) {
ArrayList list = mSources.get(category);
if (list == null) {
return new SdkSource[0];
} else {
return list.toArray(new SdkSource[list.size()]);
}
}
}
/**
* Returns true if there are sources for the given category.
*/
public boolean hasSources(SdkSourceCategory category) {
synchronized (mSources) {
ArrayList list = mSources.get(category);
return list != null && !list.isEmpty();
}
}
/**
* Returns an array of the sources across all categories. This is never null.
*/
public SdkSource[] getAllSources() {
synchronized (mSources) {
int n = 0;
for (ArrayList list : mSources.values()) {
n += list.size();
}
SdkSource[] sources = new SdkSource[n];
int i = 0;
for (ArrayList list : mSources.values()) {
for (SdkSource source : list) {
sources[i++] = source;
}
}
return sources;
}
}
/**
* Each source keeps a local cache of whatever it loaded recently.
* This calls {@link SdkSource#clearPackages()} on all the available sources,
* and the next call to {@link SdkSource#getPackages()} will actually reload
* the remote package list.
*/
public void clearAllPackages() {
synchronized (mSources) {
for (ArrayList list : mSources.values()) {
for (SdkSource source : list) {
source.clearPackages();
}
}
}
}
/**
* Returns the category of a given source, or null if the source is unknown.
*
* Note that this method uses object identity to find a given source, and does
* not identify sources by their URL like {@link #hasSourceUrl(SdkSource)} does.
*
* The search is O(N), which should be acceptable on the expectedly small source list.
*/
public SdkSourceCategory getCategory(SdkSource source) {
if (source != null) {
synchronized (mSources) {
for (Entry> entry : mSources.entrySet()) {
if (entry.getValue().contains(source)) {
return entry.getKey();
}
}
}
}
return null;
}
/**
* Returns true if there's already a similar source in the sources list
* under any category.
*
* Important: The match is NOT done on object identity.
* Instead, this searches for a similar source, based on
* {@link SdkSource#equals(Object)} which compares the source URLs.
*
* The search is O(N), which should be acceptable on the expectedly small source list.
*/
public boolean hasSourceUrl(SdkSource source) {
synchronized (mSources) {
for (ArrayList list : mSources.values()) {
for (SdkSource s : list) {
if (s.equals(source)) {
return true;
}
}
}
return false;
}
}
/**
* Returns true if there's already a similar source in the sources list
* under the specified category.
*
* Important: The match is NOT done on object identity.
* Instead, this searches for a similar source, based on
* {@link SdkSource#equals(Object)} which compares the source URLs.
*
* The search is O(N), which should be acceptable on the expectedly small source list.
*/
public boolean hasSourceUrl(SdkSourceCategory category, SdkSource source) {
synchronized (mSources) {
ArrayList list = mSources.get(category);
if (list != null) {
for (SdkSource s : list) {
if (s.equals(source)) {
return true;
}
}
}
return false;
}
}
/**
* Loads all user sources. This replaces all existing user sources
* by the ones from the property file.
*
* This calls {@link #notifyChangeListeners()} at the end of the operation.
*/
public void loadUserAddons(ILogger log) {
// Implementation detail: synchronize on the sources list to make sure that
// a- the source list doesn't change while we load/save it, and most important
// b- to make sure it's not being saved while loaded or the reverse.
// In most cases we do these operation from the UI thread so it's not really
// that necessary. This is more a protection in case of someone calls this
// from a worker thread by mistake.
synchronized (mSources) {
// Remove all existing user sources
removeAll(SdkSourceCategory.USER_ADDONS);
// Load new user sources from property file
FileInputStream fis = null;
try {
String folder = AndroidLocation.getFolder();
File f = new File(folder, SRC_FILENAME);
if (f.exists()) {
fis = new FileInputStream(f);
Properties props = new Properties();
props.load(fis);
int count = Integer.parseInt(props.getProperty(KEY_COUNT, "0"));
for (int i = 0; i < count; i++) {
String url = props.getProperty(String.format("%s%02d", KEY_SRC, i)); //$NON-NLS-1$
if (url != null) {
// FIXME: this code originally only dealt with add-on XML sources.
// Now we'd like it to deal with system-image sources too, but we
// don't know which kind of object it is (at least not without
// trying to fetch it.) As a temporary workaround, just take a
// guess based on the leaf URI name. However ideally what we can
// simply do is add a checkbox "is system-image XML" in the user
// dialog and pass this info down here. Another alternative is to
// make a "dynamic" source object that tries to guess its type once
// the URI has been fetched.
SdkSource s;
if (url.endsWith(SdkSysImgConstants.URL_DEFAULT_FILENAME)) {
s = new SdkSysImgSource(url, null/*uiName*/);
} else {
s = new SdkAddonSource(url, null/*uiName*/);
}
if (!hasSourceUrl(s)) {
add(SdkSourceCategory.USER_ADDONS, s);
}
}
}
}
} catch (NumberFormatException e) {
log.error(e, null);
} catch (AndroidLocationException e) {
log.error(e, null);
} catch (IOException e) {
log.error(e, null);
} finally {
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
}
}
}
}
notifyChangeListeners();
}
/**
* Saves all the user sources.
* @param log Logger. Cannot be null.
*/
public void saveUserAddons(ILogger log) {
// See the implementation detail note in loadUserAddons() about the synchronization.
synchronized (mSources) {
FileOutputStream fos = null;
try {
String folder = AndroidLocation.getFolder();
File f = new File(folder, SRC_FILENAME);
fos = new FileOutputStream(f);
Properties props = new Properties();
int count = 0;
for (SdkSource s : getSources(SdkSourceCategory.USER_ADDONS)) {
props.setProperty(String.format("%s%02d", KEY_SRC, count), //$NON-NLS-1$
s.getUrl());
count++;
}
props.setProperty(KEY_COUNT, Integer.toString(count));
props.store( fos, "## User Sources for Android SDK Manager"); //$NON-NLS-1$
} catch (AndroidLocationException e) {
log.error(e, null);
} catch (IOException e) {
log.error(e, null);
} finally {
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
}
}
}
}
}
/**
* Adds a listener that will be notified when the sources list has changed.
*
* @param changeListener A non-null listener to add. Ignored if already present.
* @see SdkSources#notifyChangeListeners()
*/
public void addChangeListener(Runnable changeListener) {
assert changeListener != null;
if (mChangeListeners == null) {
mChangeListeners = new ArrayList();
}
synchronized (mChangeListeners) {
if (changeListener != null && !mChangeListeners.contains(changeListener)) {
mChangeListeners.add(changeListener);
}
}
}
/**
* Removes a listener from the list of listeners to notify when the sources change.
*
* @param changeListener A listener to remove. Ignored if not previously added.
*/
public void removeChangeListener(Runnable changeListener) {
if (mChangeListeners != null && changeListener != null) {
synchronized (mChangeListeners) {
mChangeListeners.remove(changeListener);
}
}
}
/**
* Invoke all the registered change listeners, if any.
*
* This may be called from a worker thread, in which case the runnable
* should take care of only updating UI from a main thread.
*/
public void notifyChangeListeners() {
if (mChangeListeners == null) {
return;
}
synchronized (mChangeListeners) {
for (Runnable runnable : mChangeListeners) {
try {
runnable.run();
} catch (Throwable ignore) {
assert ignore == null :
"A SdkSource.ChangeListener failed with an exception: " + ignore.toString();
}
}
}
}
}
