| /* |
| * Copyright (C) 2013 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.builder.internal.incremental; |
| |
| import com.android.annotations.NonNull; |
| import com.android.annotations.Nullable; |
| import com.android.annotations.VisibleForTesting; |
| import com.google.common.base.Charsets; |
| import com.google.common.collect.Lists; |
| import com.google.common.io.Files; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.List; |
| |
| /** |
| * Holds dependency information, including the main compiled file, secondary input files |
| * (usually headers), and output files. |
| */ |
| public class DependencyData { |
| |
| @NonNull |
| private String mMainFile; |
| @NonNull |
| private List<String> mSecondaryFiles = Lists.newArrayList(); |
| @NonNull |
| private List<String> mOutputFiles = Lists.newArrayList(); |
| @NonNull List<String> mSecondaryOutputFiles = Lists.newArrayList(); |
| |
| DependencyData() { |
| } |
| |
| @NonNull |
| public String getMainFile() { |
| return mMainFile; |
| } |
| |
| void setMainFile(@NonNull String path) { |
| mMainFile = path; |
| } |
| |
| @NonNull |
| public List<String> getSecondaryFiles() { |
| return mSecondaryFiles; |
| } |
| |
| void addSecondaryFile(@NonNull String path) { |
| mSecondaryFiles.add(path); |
| } |
| |
| @NonNull |
| public List<String> getOutputFiles() { |
| return mOutputFiles; |
| } |
| |
| void addOutputFile(@NonNull String path) { |
| mOutputFiles.add(path); |
| } |
| |
| public void addSecondaryOutputFile(@NonNull String path) { |
| mSecondaryOutputFiles.add(path); |
| } |
| |
| @NonNull |
| public List<String> getSecondaryOutputFiles() { |
| return mSecondaryOutputFiles; |
| } |
| |
| /** |
| * Parses the given dependency file and returns the parsed data |
| * |
| * @param dependencyFile the dependency file |
| */ |
| @Nullable |
| public static DependencyData parseDependencyFile(@NonNull File dependencyFile) |
| throws IOException { |
| // first check if the dependency file is here. |
| if (!dependencyFile.isFile()) { |
| return null; |
| } |
| |
| // Read in our dependency file |
| List<String> content = Files.readLines(dependencyFile, Charsets.UTF_8); |
| return processDependencyData(content); |
| } |
| |
| private enum ParseMode { |
| OUTPUT, MAIN, SECONDARY, DONE |
| } |
| |
| @VisibleForTesting |
| @Nullable |
| static DependencyData processDependencyData(@NonNull List<String> content) { |
| // The format is technically: |
| // output1 output2 [...]: dep1 dep2 [...] |
| // However, the current tools generating those files guarantee that each file path |
| // is on its own line, making it simpler to handle windows paths as well as path |
| // with spaces in them. |
| |
| DependencyData data = new DependencyData(); |
| |
| ParseMode parseMode = ParseMode.OUTPUT; |
| |
| for (String line : content) { |
| line = line.trim(); |
| |
| // check for separator at the beginning |
| if (line.startsWith(":")) { |
| parseMode = ParseMode.MAIN; |
| line = line.substring(1).trim(); |
| } |
| |
| ParseMode nextMode = parseMode; |
| |
| // remove the \ at the end. |
| if (line.endsWith("\\")) { |
| line = line.substring(0, line.length() - 1).trim(); |
| } |
| |
| // detect : at the end indicating a parse mode change *after* we process this line. |
| if (line.endsWith(":")) { |
| if (parseMode == ParseMode.SECONDARY) { |
| nextMode = ParseMode.DONE; |
| } else { |
| nextMode = ParseMode.MAIN; |
| } |
| line = line.substring(0, line.length() - 1).trim(); |
| } |
| |
| if (nextMode == ParseMode.DONE) { |
| break; |
| } |
| |
| if (!line.isEmpty()) { |
| switch (parseMode) { |
| case OUTPUT: |
| data.addOutputFile(line); |
| break; |
| case MAIN: |
| data.setMainFile(line); |
| nextMode = ParseMode.SECONDARY; |
| break; |
| case SECONDARY: |
| data.addSecondaryFile(line); |
| break; |
| } |
| } |
| |
| parseMode = nextMode; |
| } |
| |
| if (data.getMainFile() == null) { |
| return null; |
| } |
| |
| return data; |
| } |
| |
| @Override |
| public String toString() { |
| return "DependencyData{" + |
| "mMainFile='" + mMainFile + '\'' + |
| ", mSecondaryFiles=" + mSecondaryFiles + |
| ", mOutputFiles=" + mOutputFiles + |
| '}'; |
| } |
| } |