| /* |
| * 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.ide.common.resources.configuration; |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * Resource Qualifier for Platform Version. |
| */ |
| public final class VersionQualifier extends ResourceQualifier { |
| /** Default pixel density value. This means the property is not set. */ |
| private static final int DEFAULT_VERSION = -1; |
| |
| private static final Pattern sVersionPattern = Pattern.compile("^v(\\d+)$");//$NON-NLS-1$ |
| |
| private int mVersion = DEFAULT_VERSION; |
| |
| public static final String NAME = "Platform Version"; |
| |
| /** |
| * Creates and returns a qualifier from the given folder segment. If the segment is incorrect, |
| * <code>null</code> is returned. |
| * @param segment the folder segment from which to create a qualifier. |
| * @return a new {@link VersionQualifier} object or <code>null</code> |
| */ |
| public static VersionQualifier getQualifier(String segment) { |
| Matcher m = sVersionPattern.matcher(segment); |
| if (m.matches()) { |
| String v = m.group(1); |
| |
| int code = -1; |
| try { |
| code = Integer.parseInt(v); |
| } catch (NumberFormatException e) { |
| // looks like the string we extracted wasn't a valid number. |
| return null; |
| } |
| |
| VersionQualifier qualifier = new VersionQualifier(); |
| qualifier.mVersion = code; |
| return qualifier; |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Returns the folder name segment for the given value. This is equivalent to calling |
| * {@link #toString()} on a {@link VersionQualifier} object. |
| * @param version the value of the qualifier, as returned by {@link #getVersion()}. |
| */ |
| public static String getFolderSegment(int version) { |
| if (version != DEFAULT_VERSION) { |
| return String.format("v%1$d", version); //$NON-NLS-1$ |
| } |
| |
| return ""; //$NON-NLS-1$ |
| } |
| |
| public VersionQualifier(int apiLevel) { |
| mVersion = apiLevel; |
| } |
| |
| public VersionQualifier() { |
| //pass |
| } |
| |
| public int getVersion() { |
| return mVersion; |
| } |
| |
| @Override |
| public String getName() { |
| return NAME; |
| } |
| |
| @Override |
| public String getShortName() { |
| return "Version"; |
| } |
| |
| @Override |
| public int since() { |
| return 1; |
| } |
| |
| @Override |
| public boolean isValid() { |
| return mVersion != DEFAULT_VERSION; |
| } |
| |
| @Override |
| public boolean hasFakeValue() { |
| return false; |
| } |
| |
| @Override |
| public boolean checkAndSet(String value, FolderConfiguration config) { |
| VersionQualifier qualifier = getQualifier(value); |
| if (qualifier != null) { |
| config.setVersionQualifier(qualifier); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public boolean equals(Object qualifier) { |
| if (qualifier instanceof VersionQualifier) { |
| return mVersion == ((VersionQualifier)qualifier).mVersion; |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public boolean isMatchFor(ResourceQualifier qualifier) { |
| if (qualifier instanceof VersionQualifier) { |
| // it is considered a match if our api level is equal or lower to the given qualifier, |
| // or the given qualifier doesn't specify an API Level. |
| return mVersion <= ((VersionQualifier) qualifier).mVersion |
| || ((VersionQualifier)qualifier).mVersion == -1; |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public boolean isBetterMatchThan(ResourceQualifier compareTo, ResourceQualifier reference) { |
| if (compareTo == null) { |
| return true; |
| } |
| |
| VersionQualifier compareQ = (VersionQualifier)compareTo; |
| VersionQualifier referenceQ = (VersionQualifier)reference; |
| |
| if (compareQ.mVersion == referenceQ.mVersion) { |
| // what we have is already the best possible match (exact match) |
| return false; |
| } else if (mVersion == referenceQ.mVersion) { |
| // got new exact value, this is the best! |
| return true; |
| } else { |
| // in all case we're going to prefer the higher version (since they have been filtered |
| // to not be too high |
| return mVersion > compareQ.mVersion; |
| } |
| } |
| |
| @Override |
| public int hashCode() { |
| return mVersion; |
| } |
| |
| /** |
| * Returns the string used to represent this qualifier in the folder name. |
| */ |
| @Override |
| public String getFolderSegment() { |
| return getFolderSegment(mVersion); |
| } |
| |
| @Override |
| public String getShortDisplayValue() { |
| if (mVersion != DEFAULT_VERSION) { |
| return String.format("API %1$d", mVersion); |
| } |
| |
| return ""; //$NON-NLS-1$ |
| } |
| |
| @Override |
| public String getLongDisplayValue() { |
| if (mVersion != DEFAULT_VERSION) { |
| return String.format("API Level %1$d", mVersion); |
| } |
| |
| return ""; //$NON-NLS-1$ |
| } |
| } |