Add ability to pass flag read only status to aapt2 (fc7aba63) · Commits · e / os / android_frameworks_base

tools/aapt2/cmd/Compile.cpp

+22 −0

Original line number	Diff line number	Diff line
		@@ -836,6 +836,28 @@ int CompileCommand::Action(const std::vector<std::string>& args) {
		return 1;
		}

		// Parse the feature flag values. An argument that starts with '@' points to a file to read flag
		// values from.
		std::vector<std::string> all_feature_flags_args;
		for (const std::string& arg : feature_flags_args_) {
		if (util::StartsWith(arg, "@")) {
		const std::string path = arg.substr(1, arg.size() - 1);
		std::string error;
		if (!file::AppendArgsFromFile(path, &all_feature_flags_args, &error)) {
		context.GetDiagnostics()->Error(android::DiagMessage(path) << error);
		return 1;
		}
		} else {
		all_feature_flags_args.push_back(arg);
		}
		}

		for (const std::string& arg : all_feature_flags_args) {
		if (!ParseFeatureFlagsParameter(arg, context.GetDiagnostics(), &options_.feature_flag_values)) {
		return 1;
		}
		}

		return Compile(&context, file_collection.get(), archive_writer.get(), options_);
		}

tools/aapt2/cmd/Compile.h

+9 −0

Original line number	Diff line number	Diff line
		@@ -24,6 +24,7 @@
		#include "Command.h"
		#include "ResourceTable.h"
		#include "androidfw/IDiagnostics.h"
		#include "cmd/Util.h"
		#include "format/Archive.h"
		#include "process/IResourceTableConsumer.h"

		@@ -45,6 +46,7 @@ struct CompileOptions {
		bool preserve_visibility_of_styleables = false;
		bool verbose = false;
		std::optional<std::string> product_;
		FeatureFlagValues feature_flag_values;
		};

		/** Parses flags and compiles resources to be used in linking. */
		@@ -92,6 +94,12 @@ class CompileCommand : public Command {
		"Leave only resources specific to the given product. All "
		"other resources (including defaults) are removed.",
		&options_.product_);
		AddOptionalFlagList("--feature-flags",
		"Specify the values of feature flags. The pairs in the argument\n"
		"are separated by ',' the name is separated from the value by '='.\n"
		"The name can have a suffix of ':ro' to indicate it is read only."
		"Example: \"flag1=true,flag2:ro=false,flag3=\" (flag3 has no given value).",
		&feature_flags_args_);
		}

		int Action(const std::vector<std::string>& args) override;
		@@ -101,6 +109,7 @@ class CompileCommand : public Command {
		CompileOptions options_;
		std::optional<std::string> visibility_;
		std::optional<std::string> trace_folder_;
		std::vector<std::string> feature_flags_args_;
		};

		int Compile(IAaptContext* context, io::IFileCollection* inputs, IArchiveWriter* output_writer,

tools/aapt2/cmd/Link.h

+3 −2

Original line number	Diff line number	Diff line
		@@ -332,8 +332,9 @@ class LinkCommand : public Command {
		AddOptionalSwitch("-v", "Enables verbose logging.", &verbose_);
		AddOptionalFlagList("--feature-flags",
		"Specify the values of feature flags. The pairs in the argument\n"
		"are separated by ',' and the name is separated from the value by '='.\n"
		"Example: \"flag1=true,flag2=false,flag3=\" (flag3 has no given value).",
		"are separated by ',' the name is separated from the value by '='.\n"
		"The name can have a suffix of ':ro' to indicate it is read only."
		"Example: \"flag1=true,flag2:ro=false,flag3=\" (flag3 has no given value).",
		&feature_flags_args_);
		AddOptionalSwitch("--non-updatable-system",
		"Mark the app as a non-updatable system app. This inserts\n"

tools/aapt2/cmd/Util.cpp

+23 −4

Original line number	Diff line number	Diff line
		@@ -128,7 +128,7 @@ bool ParseFeatureFlagsParameter(StringPiece arg, android::IDiagnostics* diag,
		if (parts.size() > 2) {
		diag->Error(android::DiagMessage()
		<< "Invalid feature flag and optional value '" << flag_and_value
		<< "'. Must be in the format 'flag_name[=true\|false]");
		<< "'. Must be in the format 'flag_name[:ro][=true\|false]");
		return false;
		}

		@@ -137,6 +137,25 @@ bool ParseFeatureFlagsParameter(StringPiece arg, android::IDiagnostics* diag,
		diag->Error(android::DiagMessage() << "No name given for one or more flags in: " << arg);
		return false;
		}
		std::vector<std::string> name_parts = util::Split(flag_name, ':');
		if (name_parts.size() > 2) {
		diag->Error(android::DiagMessage()
		<< "Invalid feature flag and optional value '" << flag_and_value
		<< "'. Must be in the format 'flag_name[:ro][=true\|false]");
		return false;
		}
		flag_name = name_parts[0];
		bool read_only = false;
		if (name_parts.size() == 2) {
		if (name_parts[1] == "ro") {
		read_only = true;
		} else {
		diag->Error(android::DiagMessage()
		<< "Invalid feature flag and optional value '" << flag_and_value
		<< "'. Must be in the format 'flag_name[:ro][=true\|false]");
		return false;
		}
		}

		std::optional<bool> flag_value = {};
		if (parts.size() == 2) {
		@@ -151,13 +170,13 @@ bool ParseFeatureFlagsParameter(StringPiece arg, android::IDiagnostics* diag,
		}
		}

		if (auto [it, inserted] =
		out_feature_flag_values->try_emplace(std::string(flag_name), flag_value);
		auto ffp = FeatureFlagProperties{read_only, flag_value};
		if (auto [it, inserted] = out_feature_flag_values->try_emplace(std::string(flag_name), ffp);
		!inserted) {
		// We are allowing the same flag to appear multiple times, last value wins.
		diag->Note(android::DiagMessage()
		<< "Value for feature flag '" << flag_name << "' was given more than once");
		it->second = flag_value;
		it->second = ffp;
		}
		}
		return true;

tools/aapt2/cmd/Util.h

+11 −1

Original line number	Diff line number	Diff line
		@@ -37,7 +37,17 @@

		namespace aapt {

		using FeatureFlagValues = std::map<std::string, std::optional<bool>, std::less<>>;
		struct FeatureFlagProperties {
		bool read_only;
		std::optional<bool> enabled;

		FeatureFlagProperties(bool ro, std::optional<bool> e) : read_only(ro), enabled(e) {
		}

		bool operator==(const FeatureFlagProperties&) const = default;
		};

		using FeatureFlagValues = std::map<std::string, FeatureFlagProperties, std::less<>>;

		// Parses a configuration density (ex. hdpi, xxhdpi, 234dpi, anydpi, etc).
		// Returns Nothing and logs a human friendly error message if the string was not legal.