KeqingMoe/argparse
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Remove argc argv version of parse_args_internal

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This commit is contained in:
Stephan van Veen 2019-05-18 14:27:32 +02:00
parent 9e7b80034e
commit 62c2be634a
1 changed files with 3 additions and 125 deletions
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128
include/argparse.hpp
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@ -327,8 +327,9 @@ class ArgumentParser {
* @throws std::runtime_error in case of any invalid argument * @throws std::runtime_error in case of any invalid argument
*/ */
void parse_args(int argc, const char * const argv[]) { void parse_args(int argc, const char * const argv[]) {
parse_args_internal(argc, argv); std::vector<std::string> arguments;
parse_args_validate(); std::copy(argv, argv + argc, std::back_inserter(arguments));
parse_args(arguments);
} }
/* Getter enabled for all template types other than std::vector and std::list /* Getter enabled for all template types other than std::vector and std::list
@ -473,129 +474,6 @@ class ArgumentParser {
} }
} }
/*
* @throws std::runtime_error in case of any invalid argument
*/
void parse_args_internal(int argc, const char * const argv[]) {
if (mProgramName.empty() && argc > 0)
mProgramName = argv[0];
for (int i = 1; i < argc; i++) {
auto tCurrentArgument = std::string(argv[i]);
if (tCurrentArgument == Argument::mHelpOption || tCurrentArgument == Argument::mHelpOptionLong) {
throw std::runtime_error("help called");
}
auto tIterator = mArgumentMap.find(argv[i]);
if (tIterator != mArgumentMap.end()) {
// Start parsing optional argument
auto tArgument = tIterator->second;
tArgument->mUsedName = tCurrentArgument;
tArgument->mIsUsed = true;
auto tCount = tArgument->mNumArgs;
// Check to see if implicit value should be used
// Two cases to handle here:
// (1) User has explicitly programmed nargs to be 0
// (2) User has provided an implicit value, which also sets nargs to 0
if (tCount == 0) {
// Use implicit value for this optional argument
tArgument->mValues.emplace_back(tArgument->mImplicitValue);
tArgument->mRawValues.emplace_back();
tCount = 0;
}
while (tCount > 0) {
i = i + 1;
if (i < argc) {
tArgument->mUsedName = tCurrentArgument;
tArgument->mRawValues.emplace_back(argv[i]);
if (tArgument->mAction != nullptr)
tArgument->mValues.emplace_back(tArgument->mAction(argv[i]));
else {
if (tArgument->mDefaultValue.has_value())
tArgument->mValues.emplace_back(tArgument->mDefaultValue);
else
tArgument->mValues.emplace_back(std::string(argv[i]));
}
}
tCount -= 1;
}
}
else {
if (Argument::is_optional(argv[i])) {
// This is possibly a compound optional argument
// Example: We have three optional arguments -a, -u and -x
// The user provides ./main -aux ...
// Here -aux is a compound optional argument
std::string tCompoundArgument = std::string(argv[i]);
if (tCompoundArgument.size() > 1 && tCompoundArgument[0] == '-' && tCompoundArgument[1] != '-') {
for (size_t j = 1; j < tCompoundArgument.size(); j++) {
std::string tArgument(1, tCompoundArgument[j]);
size_t tNumArgs = 0;
tIterator = mArgumentMap.find("-" + tArgument);
if (tIterator != mArgumentMap.end()) {
auto tArgumentObject = tIterator->second;
tNumArgs = tArgumentObject->mNumArgs;
std::vector<std::string> tArgumentsForRecursiveParsing = {"", "-" + tArgument};
while (tNumArgs > 0 && i < argc) {
i += 1;
if (i < argc) {
tArgumentsForRecursiveParsing.emplace_back(argv[i]);
tNumArgs -= 1;
}
}
parse_args_internal(tArgumentsForRecursiveParsing);
}
else {
if (!tArgument.empty() && tArgument[0] == '-')
std::cout << "warning: unrecognized optional argument " << tArgument
<< std::endl;
else
std::cout << "warning: unrecognized optional argument -" << tArgument
<< std::endl;
}
}
}
else {
std::cout << "warning: unrecognized optional argument " << tCompoundArgument << std::endl;
}
}
else {
// This is a positional argument.
// Parse and save into mPositionalArguments vector
if (mNextPositionalArgument >= mPositionalArguments.size()) {
std::stringstream stream;
stream << "error: unexpected positional argument " << argv[i] << std::endl;
throw std::runtime_error(stream.str());
}
auto tArgument = mPositionalArguments[mNextPositionalArgument];
auto tCount = tArgument->mNumArgs - tArgument->mRawValues.size();
while (tCount > 0) {
tIterator = mArgumentMap.find(argv[i]);
if (tIterator != mArgumentMap.end() || Argument::is_optional(argv[i])) {
i = i - 1;
break;
}
if (i < argc) {
tArgument->mUsedName = tCurrentArgument;
tArgument->mRawValues.emplace_back(argv[i]);
if (tArgument->mAction != nullptr)
tArgument->mValues.emplace_back(tArgument->mAction(argv[i]));
else {
if (tArgument->mDefaultValue.has_value())
tArgument->mValues.emplace_back(tArgument->mDefaultValue);
else
tArgument->mValues.emplace_back(std::string(argv[i]));
}
}
tCount -= 1;
if (tCount > 0) i += 1;
}
if (tCount == 0)
mNextPositionalArgument += 1;
}
}
}
}
/* /*
* @throws std::runtime_error in case of any invalid argument * @throws std::runtime_error in case of any invalid argument
*/ */