options.cpp - platform/system/tools/aidl - Git at Google

 /*
  * Copyright (C) 2015, 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.
  */

 #include "options.h"

 #include <cstring>
 #include <iostream>
 #include <stdio.h>

 #include "logging.h"
 #include "os.h"

 using std::cerr;
 using std::endl;
 using std::string;
 using std::unique_ptr;
 using std::vector;

 namespace android {
 namespace aidl {
 namespace {

 unique_ptr<JavaOptions> java_usage() {
   fprintf(stderr,
           "usage: aidl OPTIONS INPUT [OUTPUT]\n"
           "       aidl --preprocess OUTPUT INPUT...\n"
           "\n"
           "OPTIONS:\n"
           "   -I<DIR>    search path for import statements.\n"
           "   -d<FILE>   generate dependency file.\n"
           "   -a         generate dependency file next to the output file with "
           "the name based on the input file.\n"
           "   -p<FILE>   file created by --preprocess to import.\n"
           "   -o<FOLDER> base output folder for generated files.\n"
           "   -b         fail when trying to compile a parcelable.\n"
           "\n"
           "INPUT:\n"
           "   An aidl interface file.\n"
           "\n"
           "OUTPUT:\n"
           "   The generated interface files.\n"
           "   If omitted and the -o option is not used, the input filename is "
           "used, with the .aidl extension changed to a .java extension.\n"
           "   If the -o option is used, the generated files will be placed in "
           "the base output folder, under their package folder\n");
   return unique_ptr<JavaOptions>(nullptr);
 }

 }  // namespace

 unique_ptr<JavaOptions> JavaOptions::Parse(int argc, const char* const* argv) {
   unique_ptr<JavaOptions> options(new JavaOptions());
   int i = 1;

   if (argc >= 2 && 0 == strcmp(argv[1], "--preprocess")) {
     if (argc < 4) {
       return java_usage();
     }
     options->output_file_name_ = argv[2];
     for (int i = 3; i < argc; i++) {
       options->files_to_preprocess_.push_back(argv[i]);
     }
     options->task = PREPROCESS_AIDL;
     return options;
   }

   options->task = COMPILE_AIDL_TO_JAVA;
   // OPTIONS
   while (i < argc) {
     const char* s = argv[i];
     const size_t len = strlen(s);
     if (s[0] != '-') {
       break;
     }
     if (len <= 1) {
       fprintf(stderr, "unknown option (%d): %s\n", i, s);
       return java_usage();
     }
     // -I<system-import-path>
     if (s[1] == 'I') {
       if (len > 2) {
         options->import_paths_.push_back(s + 2);
       } else {
         fprintf(stderr, "-I option (%d) requires a path.\n", i);
         return java_usage();
       }
     } else if (s[1] == 'd') {
       if (len > 2) {
         options->dep_file_name_ = s + 2;
       } else {
         fprintf(stderr, "-d option (%d) requires a file.\n", i);
         return java_usage();
       }
     } else if (strcmp(s, "-a") == 0) {
       options->auto_dep_file_ = true;
     } else if (s[1] == 'p') {
       if (len > 2) {
         options->preprocessed_files_.push_back(s + 2);
       } else {
         fprintf(stderr, "-p option (%d) requires a file.\n", i);
         return java_usage();
       }
     } else if (s[1] == 'o') {
       if (len > 2) {
         options->output_base_folder_= s + 2;
       } else {
         fprintf(stderr, "-o option (%d) requires a path.\n", i);
         return java_usage();
       }
     } else if (strcmp(s, "-b") == 0) {
       options->fail_on_parcelable_ = true;
     } else {
       // s[1] is not known
       fprintf(stderr, "unknown option (%d): %s\n", i, s);
       return java_usage();
     }
     i++;
   }
   // INPUT
   if (i < argc) {
     options->input_file_name_ = argv[i];
     i++;
   } else {
     fprintf(stderr, "INPUT required\n");
     return java_usage();
   }
   if (!EndsWith(options->input_file_name_, ".aidl")) {
     cerr << "Expected .aidl file for input but got "
          << options->input_file_name_ << endl;
     return java_usage();
   }

   // OUTPUT
   if (i < argc) {
     options->output_file_name_ = argv[i];
     i++;
   } else if (options->output_base_folder_.empty()) {
     // copy input into output and change the extension from .aidl to .java
     options->output_file_name_= options->input_file_name_;
     if (!ReplaceSuffix(".aidl", ".java", &options->output_file_name_)) {
       // we should never get here since we validated the suffix.
       LOG(FATAL) << "Internal aidl error.";
       return java_usage();
     }
   }

   // anything remaining?
   if (i != argc) {
     fprintf(stderr, "unknown option%s:",
             (i == argc - 1 ? (const char*)"" : (const char*)"s"));
     for (; i < argc - 1; i++) {
       fprintf(stderr, " %s", argv[i]);
     }
     fprintf(stderr, "\n");
     return java_usage();
   }

   return options;
 }

 string JavaOptions::DependencyFilePath() const {
   if (auto_dep_file_) {
     return output_file_name_ + ".d";
   }
   return dep_file_name_;
 }

 namespace {

 unique_ptr<CppOptions> cpp_usage() {
   cerr << "usage: aidl-cpp INPUT_FILE HEADER_DIR OUTPUT_FILE" << endl
        << endl
        << "OPTIONS:" << endl
        << "   -I<DIR>   search path for import statements" << endl
        << "   -d<FILE>  generate dependency file" << endl
        << endl
        << "INPUT_FILE:" << endl
        << "   an aidl interface file" << endl
        << "HEADER_DIR:" << endl
        << "   empty directory to put generated headers" << endl
        << "OUTPUT_FILE:" << endl
        << "   path to write generated .cpp code" << endl;
   return unique_ptr<CppOptions>(nullptr);
 }

 }  // namespace

 unique_ptr<CppOptions> CppOptions::Parse(int argc, const char* const* argv) {
   unique_ptr<CppOptions> options(new CppOptions());
   int i = 1;

   // Parse flags, all of which start with '-'
   for ( ; i < argc; ++i) {
     const size_t len = strlen(argv[i]);
     const char *s = argv[i];
     if (s[0] != '-') {
       break;  // On to the positional arguments.
     }
     if (len < 2) {
       cerr << "Invalid argument '" << s << "'." << endl;
       return cpp_usage();
     }
     const string the_rest = s + 2;
     if (s[1] == 'I') {
       options->import_paths_.push_back(the_rest);
     } else if (s[1] == 'd') {
       options->dep_file_name_ = the_rest;
     } else {
       cerr << "Invalid argument '" << s << "'." << endl;
       return cpp_usage();
     }
   }

   // There are exactly three positional arguments.
   const int remaining_args = argc - i;
   if (remaining_args != 3) {
     cerr << "Expected 3 positional arguments but got " << remaining_args << "." << endl;
     return cpp_usage();
   }

   options->input_file_name_ = argv[i];
   options->output_header_dir_ = argv[i + 1];
   options->output_file_name_ = argv[i + 2];

   if (!EndsWith(options->input_file_name_, ".aidl")) {
     cerr << "Expected .aidl file for input but got " << options->input_file_name_ << endl;
     return cpp_usage();
   }

   return options;
 }

 bool EndsWith(const string& str, const string& suffix) {
   if (str.length() < suffix.length()) {
     return false;
   }
   return std::equal(str.crbegin(), str.crbegin() + suffix.length(),
                     suffix.crbegin());
 }

 bool ReplaceSuffix(const string& old_suffix,
                    const string& new_suffix,
                    string* str) {
   if (!EndsWith(*str, old_suffix)) return false;
   str->replace(str->length() - old_suffix.length(),
                old_suffix.length(),
                new_suffix);
   return true;
 }


 }  // namespace android
 }  // namespace aidl
	/*
	* Copyright (C) 2015, 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.
	*/

	#include "options.h"

	#include <cstring>
	#include <iostream>
	#include <stdio.h>

	#include "logging.h"
	#include "os.h"

	using std::cerr;
	using std::endl;
	using std::string;
	using std::unique_ptr;
	using std::vector;

	namespace android {
	namespace aidl {
	namespace {

	unique_ptr<JavaOptions> java_usage() {
	fprintf(stderr,
	"usage: aidl OPTIONS INPUT [OUTPUT]\n"
	" aidl --preprocess OUTPUT INPUT...\n"
	"\n"
	"OPTIONS:\n"
	" -I<DIR> search path for import statements.\n"
	" -d<FILE> generate dependency file.\n"
	" -a generate dependency file next to the output file with "
	"the name based on the input file.\n"
	" -p<FILE> file created by --preprocess to import.\n"
	" -o<FOLDER> base output folder for generated files.\n"
	" -b fail when trying to compile a parcelable.\n"
	"\n"
	"INPUT:\n"
	" An aidl interface file.\n"
	"\n"
	"OUTPUT:\n"
	" The generated interface files.\n"
	" If omitted and the -o option is not used, the input filename is "
	"used, with the .aidl extension changed to a .java extension.\n"
	" If the -o option is used, the generated files will be placed in "
	"the base output folder, under their package folder\n");
	return unique_ptr<JavaOptions>(nullptr);
	}

	} // namespace

	unique_ptr<JavaOptions> JavaOptions::Parse(int argc, const char* const* argv) {
	unique_ptr<JavaOptions> options(new JavaOptions());
	int i = 1;

	if (argc >= 2 && 0 == strcmp(argv[1], "--preprocess")) {
	if (argc < 4) {
	return java_usage();
	}
	options->output_file_name_ = argv[2];
	for (int i = 3; i < argc; i++) {
	options->files_to_preprocess_.push_back(argv[i]);
	}
	options->task = PREPROCESS_AIDL;
	return options;
	}

	options->task = COMPILE_AIDL_TO_JAVA;
	// OPTIONS
	while (i < argc) {
	const char* s = argv[i];
	const size_t len = strlen(s);
	if (s[0] != '-') {
	break;
	}
	if (len <= 1) {
	fprintf(stderr, "unknown option (%d): %s\n", i, s);
	return java_usage();
	}
	// -I<system-import-path>
	if (s[1] == 'I') {
	if (len > 2) {
	options->import_paths_.push_back(s + 2);
	} else {
	fprintf(stderr, "-I option (%d) requires a path.\n", i);
	return java_usage();
	}
	} else if (s[1] == 'd') {
	if (len > 2) {
	options->dep_file_name_ = s + 2;
	} else {
	fprintf(stderr, "-d option (%d) requires a file.\n", i);
	return java_usage();
	}
	} else if (strcmp(s, "-a") == 0) {
	options->auto_dep_file_ = true;
	} else if (s[1] == 'p') {
	if (len > 2) {
	options->preprocessed_files_.push_back(s + 2);
	} else {
	fprintf(stderr, "-p option (%d) requires a file.\n", i);
	return java_usage();
	}
	} else if (s[1] == 'o') {
	if (len > 2) {
	options->output_base_folder_= s + 2;
	} else {
	fprintf(stderr, "-o option (%d) requires a path.\n", i);
	return java_usage();
	}
	} else if (strcmp(s, "-b") == 0) {
	options->fail_on_parcelable_ = true;
	} else {
	// s[1] is not known
	fprintf(stderr, "unknown option (%d): %s\n", i, s);
	return java_usage();
	}
	i++;
	}
	// INPUT
	if (i < argc) {
	options->input_file_name_ = argv[i];
	i++;
	} else {
	fprintf(stderr, "INPUT required\n");
	return java_usage();
	}
	if (!EndsWith(options->input_file_name_, ".aidl")) {
	cerr << "Expected .aidl file for input but got "
	<< options->input_file_name_ << endl;
	return java_usage();
	}

	// OUTPUT
	if (i < argc) {
	options->output_file_name_ = argv[i];
	i++;
	} else if (options->output_base_folder_.empty()) {
	// copy input into output and change the extension from .aidl to .java
	options->output_file_name_= options->input_file_name_;
	if (!ReplaceSuffix(".aidl", ".java", &options->output_file_name_)) {
	// we should never get here since we validated the suffix.
	LOG(FATAL) << "Internal aidl error.";
	return java_usage();
	}
	}

	// anything remaining?
	if (i != argc) {
	fprintf(stderr, "unknown option%s:",
	(i == argc - 1 ? (const char)"" : (const char)"s"));
	for (; i < argc - 1; i++) {
	fprintf(stderr, " %s", argv[i]);
	}
	fprintf(stderr, "\n");
	return java_usage();
	}

	return options;
	}

	string JavaOptions::DependencyFilePath() const {
	if (auto_dep_file_) {
	return output_file_name_ + ".d";
	}
	return dep_file_name_;
	}

	namespace {

	unique_ptr<CppOptions> cpp_usage() {
	cerr << "usage: aidl-cpp INPUT_FILE HEADER_DIR OUTPUT_FILE" << endl
	<< endl
	<< "OPTIONS:" << endl
	<< " -I<DIR> search path for import statements" << endl
	<< " -d<FILE> generate dependency file" << endl
	<< endl
	<< "INPUT_FILE:" << endl
	<< " an aidl interface file" << endl
	<< "HEADER_DIR:" << endl
	<< " empty directory to put generated headers" << endl
	<< "OUTPUT_FILE:" << endl
	<< " path to write generated .cpp code" << endl;
	return unique_ptr<CppOptions>(nullptr);
	}

	} // namespace

	unique_ptr<CppOptions> CppOptions::Parse(int argc, const char* const* argv) {
	unique_ptr<CppOptions> options(new CppOptions());
	int i = 1;

	// Parse flags, all of which start with '-'
	for ( ; i < argc; ++i) {
	const size_t len = strlen(argv[i]);
	const char *s = argv[i];
	if (s[0] != '-') {
	break; // On to the positional arguments.
	}
	if (len < 2) {
	cerr << "Invalid argument '" << s << "'." << endl;
	return cpp_usage();
	}
	const string the_rest = s + 2;
	if (s[1] == 'I') {
	options->import_paths_.push_back(the_rest);
	} else if (s[1] == 'd') {
	options->dep_file_name_ = the_rest;
	} else {
	cerr << "Invalid argument '" << s << "'." << endl;
	return cpp_usage();
	}
	}

	// There are exactly three positional arguments.
	const int remaining_args = argc - i;
	if (remaining_args != 3) {
	cerr << "Expected 3 positional arguments but got " << remaining_args << "." << endl;
	return cpp_usage();
	}

	options->input_file_name_ = argv[i];
	options->output_header_dir_ = argv[i + 1];
	options->output_file_name_ = argv[i + 2];

	if (!EndsWith(options->input_file_name_, ".aidl")) {
	cerr << "Expected .aidl file for input but got " << options->input_file_name_ << endl;
	return cpp_usage();
	}

	return options;
	}

	bool EndsWith(const string& str, const string& suffix) {
	if (str.length() < suffix.length()) {
	return false;
	}
	return std::equal(str.crbegin(), str.crbegin() + suffix.length(),
	suffix.crbegin());
	}

	bool ReplaceSuffix(const string& old_suffix,
	const string& new_suffix,
	string* str) {
	if (!EndsWith(*str, old_suffix)) return false;
	str->replace(str->length() - old_suffix.length(),
	old_suffix.length(),
	new_suffix);
	return true;
	}



	} // namespace android
	} // namespace aidl