/**
* Looks through filtered drawables for files not of the target density and replaces them with
* scaled versions.
*
* <p>Any drawables found by this step didn't have equivalents in the target density. If they are
* of a higher density, we can replicate what Android does and downscale them at compile-time.
*/
private void scaleUnmatchedDrawables(ExecutionContext context)
throws IOException, InterruptedException {
ResourceFilters.Density targetDensity = ResourceFilters.Density.ORDERING.max(targetDensities);
// Go over all the images that remain after filtering.
Preconditions.checkNotNull(drawableFinder);
Collection<Path> drawables =
drawableFinder.findDrawables(inResDirToOutResDirMap.values(), filesystem);
for (Path drawable : drawables) {
if (drawable.toString().endsWith(".9.png")) {
// Skip nine-patch for now.
continue;
}
ResourceFilters.Qualifiers qualifiers = new ResourceFilters.Qualifiers(drawable);
ResourceFilters.Density density = qualifiers.density;
// If the image has a qualifier but it's not the right one.
Preconditions.checkNotNull(targetDensities);
if (!targetDensities.contains(density)) {
// Replace density qualifier with target density using regular expression to match
// the qualifier in the context of a path to a drawable.
String fromDensity =
(density == ResourceFilters.Density.NO_QUALIFIER ? "" : "-") + density.toString();
Path destination =
Paths.get(
MorePaths.pathWithUnixSeparators(drawable)
.replaceFirst(
"((?:^|/)drawable[^/]*)" + Pattern.quote(fromDensity) + "(-|$|/)",
"$1-" + targetDensity + "$2"));
double factor = targetDensity.value() / density.value();
if (factor >= 1.0) {
// There is no point in up-scaling, or converting between drawable and drawable-mdpi.
continue;
}
// Make sure destination folder exists and perform downscaling.
filesystem.createParentDirs(destination);
Preconditions.checkNotNull(imageScaler);
imageScaler.scale(factor, drawable, destination, context);
// Delete source file.
filesystem.deleteFileAtPath(drawable);
// Delete newly-empty directories to prevent missing resources errors in apkbuilder.
Path parent = drawable.getParent();
if (filesystem.listFiles(parent).length == 0) {
filesystem.deleteFileAtPath(parent);
}
}
}
}
@SuppressWarnings({"rawtypes", "unchecked"})
private TargetNode<?> createTargetNode(
BuckEventBus eventBus,
Cell cell,
Path buildFile,
BuildTarget target,
Map<String, Object> rawNode,
TargetNodeListener nodeListener) {
BuildRuleType buildRuleType = parseBuildRuleTypeFromRawRule(cell, rawNode);
// Because of the way that the parser works, we know this can never return null.
Description<?> description = cell.getDescription(buildRuleType);
if (target.isFlavored()) {
if (description instanceof Flavored) {
if (!((Flavored) description).hasFlavors(ImmutableSet.copyOf(target.getFlavors()))) {
throw new HumanReadableException(
"Unrecognized flavor in target %s while parsing %s%s.",
target,
UnflavoredBuildTarget.BUILD_TARGET_PREFIX,
MorePaths.pathWithUnixSeparators(
target.getBasePath().resolve(cell.getBuildFileName())));
}
} else {
LOG.warn(
"Target %s (type %s) must implement the Flavored interface "
+ "before we can check if it supports flavors: %s",
target.getUnflavoredBuildTarget(), buildRuleType, target.getFlavors());
throw new HumanReadableException(
"Target %s (type %s) does not currently support flavors (tried %s)",
target.getUnflavoredBuildTarget(), buildRuleType, target.getFlavors());
}
}
Cell targetCell = cell.getCell(target);
BuildRuleFactoryParams factoryParams =
new BuildRuleFactoryParams(
targetCell.getFilesystem(),
target.withoutCell(),
new FilesystemBackedBuildFileTree(cell.getFilesystem(), cell.getBuildFileName()),
targetCell.isEnforcingBuckPackageBoundaries());
Object constructorArg = description.createUnpopulatedConstructorArg();
try {
ImmutableSet.Builder<BuildTarget> declaredDeps = ImmutableSet.builder();
ImmutableSet.Builder<BuildTargetPattern> visibilityPatterns = ImmutableSet.builder();
try (SimplePerfEvent.Scope scope =
SimplePerfEvent.scope(
eventBus, PerfEventId.of("MarshalledConstructorArg"), "target", target)) {
marshaller.populate(
targetCell.getCellRoots(),
targetCell.getFilesystem(),
factoryParams,
constructorArg,
declaredDeps,
visibilityPatterns,
rawNode);
}
try (SimplePerfEvent.Scope scope =
SimplePerfEvent.scope(eventBus, PerfEventId.of("CreatedTargetNode"), "target", target)) {
Hasher hasher = Hashing.sha1().newHasher();
hasher.putString(BuckVersion.getVersion(), UTF_8);
JsonObjectHashing.hashJsonObject(hasher, rawNode);
synchronized (this) {
targetsCornucopia.put(target.getUnflavoredBuildTarget(), target);
}
TargetNode<?> node =
new TargetNode(
hasher.hash(),
description,
constructorArg,
typeCoercerFactory,
factoryParams,
declaredDeps.build(),
visibilityPatterns.build(),
targetCell.getCellRoots());
nodeListener.onCreate(buildFile, node);
return node;
}
} catch (NoSuchBuildTargetException | TargetNode.InvalidSourcePathInputException e) {
throw new HumanReadableException(e);
} catch (ConstructorArgMarshalException e) {
throw new HumanReadableException("%s: %s", target, e.getMessage());
} catch (IOException e) {
throw new HumanReadableException(e.getMessage(), e);
}
}
static OwnersReport buildOwnersReport(
CommandRunnerParams params,
ParserConfig parserConfig,
BuildFileTree buildFileTree,
Iterable<String> arguments,
boolean guessForDeletedEnabled)
throws IOException, InterruptedException, BuildFileParseException, BuildTargetException {
final Path rootPath = params.getCell().getFilesystem().getRootPath();
Preconditions.checkState(rootPath.isAbsolute());
Map<Path, List<TargetNode<?>>> targetNodes = Maps.newHashMap();
OwnersReport report = OwnersReport.emptyReport();
for (Path filePath : getArgumentsAsPaths(rootPath, arguments)) {
Optional<Path> basePath = buildFileTree.getBasePathOfAncestorTarget(filePath);
if (!basePath.isPresent()) {
report =
report.updatedWith(
new OwnersReport(
ImmutableSetMultimap.<TargetNode<?>, Path>of(),
/* inputWithNoOwners */ ImmutableSet.of(filePath),
Sets.<String>newHashSet(),
Sets.<String>newHashSet()));
continue;
}
Path buckFile = basePath.get().resolve(parserConfig.getBuildFileName());
Preconditions.checkState(params.getCell().getFilesystem().exists(buckFile));
// Parse buck files and load target nodes.
if (!targetNodes.containsKey(buckFile)) {
try {
targetNodes.put(
buckFile,
params
.getParser()
.getOrLoadTargetNodes(
buckFile,
parserConfig,
params.getBuckEventBus(),
params.getConsole(),
params.getEnvironment()));
} catch (BuildFileParseException | BuildTargetException e) {
Path targetBasePath = MorePaths.relativize(rootPath, rootPath.resolve(basePath.get()));
String targetBaseName = "//" + MorePaths.pathWithUnixSeparators(targetBasePath);
params
.getConsole()
.getStdErr()
.format("Could not parse build targets for %s", targetBaseName);
throw e;
}
}
for (TargetNode<?> targetNode : targetNodes.get(buckFile)) {
report =
report.updatedWith(
generateOwnersReport(
params,
targetNode,
ImmutableList.of(filePath.toString()),
guessForDeletedEnabled));
}
}
return report;
}
