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/*
* Copyright (C) 2014 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 "utils/arguments_parser.h"
#include <unordered_set>
namespace latinime {
namespace dicttoolkit {
const size_t ArgumentSpec::UNLIMITED_COUNT = S_INT_MAX;
bool ArgumentsParser::validateSpecs() const {
std::unordered_set<std::string> argumentNameSet;
for (size_t i = 0; i < mArgumentSpecs.size() ; ++i) {
if (mArgumentSpecs[i].getMinCount() == 0 && mArgumentSpecs[i].getMaxCount() == 0) {
AKLOGE("minCount = maxCount = 0 for %s.", mArgumentSpecs[i].getName().c_str());
return false;
}
if (mArgumentSpecs[i].getMinCount() != mArgumentSpecs[i].getMaxCount()
&& i != mArgumentSpecs.size() - 1) {
AKLOGE("Variable length argument must be at the end.",
mArgumentSpecs[i].getName().c_str()v );
return false;
}
if (argumentNameSet.count(mArgumentSpecs[i].getName()) > 0) {
AKLOGE("Multiple arguments have the same name \"%s\".",
mArgumentSpecs[i].getName().c_str());
return false;
}
argumentNameSet.insert(mArgumentSpecs[i].getName());
}
return true;
}
void ArgumentsParser::printUsage(const std::string &commandName,
const std::string &description) const {
printf("Usage: %s", commandName.c_str());
for (const auto &option : mOptionSpecs) {
const std::string &optionName = option.first;
const OptionSpec &spec = option.second;
printf(" [-%s", optionName.c_str());
if (spec.needsValue()) {
printf(" <%s>", spec.getValueName().c_str());
}
printf("]");
}
for (const auto &argSpec : mArgumentSpecs) {
if (argSpec.getMinCount() == 0 && argSpec.getMaxCount() == 1) {
printf(" [<%s>]", argSpec.getName().c_str());
} else if (argSpec.getMinCount() == 1 && argSpec.getMaxCount() == 1) {
printf(" <%s>", argSpec.getName().c_str());
} else if (argSpec.getMinCount() == 0) {
printf(" [<%s>...]", argSpec.getName().c_str());
} else if (argSpec.getMinCount() == 1) {
printf(" <%s>...", argSpec.getName().c_str());
}
}
printf("\n%s\n\n", description.c_str());
for (const auto &option : mOptionSpecs) {
const std::string &optionName = option.first;
const OptionSpec &spec = option.second;
printf(" -%s", optionName.c_str());
if (spec.needsValue()) {
printf(" <%s>", spec.getValueName().c_str());
}
printf("\t\t\t%s", spec.getDescription().c_str());
if (spec.needsValue() && !spec.getDefaultValue().empty()) {
printf("\tdefault: %s", spec.getDefaultValue().c_str());
}
printf("\n");
}
for (const auto &argSpec : mArgumentSpecs) {
printf(" <%s>\t\t\t%s\n", argSpec.getName().c_str(), argSpec.getDescription().c_str());
}
printf("\n\n");
}
const ArgumentsAndOptions ArgumentsParser::parseArguments(const int argc, char **argv,
const bool printErrorMessage) const {
if (argc <= 0) {
AKLOGE("Invalid argc (%d).", argc);
ASSERT(false);
return ArgumentsAndOptions();
}
std::unordered_map<std::string, std::string> options;
for (const auto &entry : mOptionSpecs) {
const std::string &optionName = entry.first;
const OptionSpec &optionSpec = entry.second;
if (optionSpec.needsValue() && !optionSpec.getDefaultValue().empty()) {
// Set default value.
options[optionName] = optionSpec.getDefaultValue();
}
}
std::unordered_map<std::string, std::vector<std::string>> arguments;
auto argumentSpecIt = mArgumentSpecs.cbegin();
for (int i = 1; i < argc; ++i) {
const std::string arg = argv[i];
if (arg.length() > 1 && arg[0] == '-') {
// option
const std::string optionName = arg.substr(1);
const auto it = mOptionSpecs.find(optionName);
if (it == mOptionSpecs.end()) {
if (printErrorMessage) {
fprintf(stderr, "Unknown option: '%s'\n", optionName.c_str());
}
return ArgumentsAndOptions();
}
std::string optionValue;
if (it->second.needsValue()) {
++i;
if (i >= argc) {
if (printErrorMessage) {
fprintf(stderr, "Missing argument for option '%s'\n", optionName.c_str());
}
return ArgumentsAndOptions();
}
optionValue = argv[i];
}
options[optionName] = optionValue;
} else {
// argument
if (argumentSpecIt == mArgumentSpecs.end()) {
if (printErrorMessage) {
fprintf(stderr, "Too many arguments.\n");
}
return ArgumentsAndOptions();
}
arguments[argumentSpecIt->getName()].push_back(arg);
if (arguments[argumentSpecIt->getName()].size() >= argumentSpecIt->getMaxCount()) {
++argumentSpecIt;
}
}
}
if (argumentSpecIt != mArgumentSpecs.end()) {
const auto &it = arguments.find(argumentSpecIt->getName());
const size_t minCount = argumentSpecIt->getMinCount();
const size_t actualcount = it == arguments.end() ? 0 : it->second.size();
if (minCount > actualcount) {
if (printErrorMessage) {
fprintf(stderr, "Not enough arguments. %zd argumant(s) required for <%s>\n",
minCount, argumentSpecIt->getName().c_str());
}
return ArgumentsAndOptions();
}
}
return ArgumentsAndOptions(std::move(options), std::move(arguments));
}
} // namespace dicttoolkit
} // namespace latinime
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