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Checking if argument is positional and saving this as a property in Argument object

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This commit is contained in:
Pranav Srinivas Kumar 2019-03-30 19:57:47 -04:00
parent b1a67c2aad
commit ccb268d2d1
1 changed files with 19 additions and 2 deletions
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21
src/argparse.hpp
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@ -6,6 +6,7 @@
#include <any>
#include <memory>
#include <type_traits>
#include <algorithm>
namespace argparse {
@ -32,6 +33,11 @@ bool upsert(std::map<KeyType, ElementType>& aMap, KeyType const& aKey, ElementTy
return true; // changed cause not existing
}
bool starts_with(const std::string& haystack, const std::string& needle) {
return needle.length() <= haystack.length()
&& std::equal(needle.begin(), needle.end(), haystack.begin());
};
struct Argument {
std::vector<std::string> mNames;
std::string mHelp;
@ -40,6 +46,7 @@ struct Argument {
std::vector<std::any> mValues;
std::vector<std::string> mRawValues;
size_t mNumArgs;
bool mIsPositional;
Argument() :
mNames({}),
@ -47,7 +54,8 @@ struct Argument {
mAction([](const std::string& aValue) { return aValue; }),
mValues({}),
mRawValues({}),
mNumArgs(1) {}
mNumArgs(1),
mIsPositional(false) {}
Argument& help(const std::string& aHelp) {
mHelp = aHelp;
@ -139,7 +147,16 @@ class ArgumentParser {
std::shared_ptr<Argument> tArgument = std::make_shared<Argument>();
tArgument->mNames.push_back(value);
add_argument_internal(tArgument, Fargs...);
mPositionalArguments.push_back(tArgument); // TODO: check if argument is positional before push_back
bool positional = false;
for (auto& mName : tArgument->mNames) {
if (starts_with(mName, "--") || starts_with(mName, "-"))
tArgument->mIsPositional = true;
}
if (tArgument->mIsPositional)
mPositionalArguments.push_back(tArgument);
for (auto& mName : tArgument->mNames) {
upsert(mArgumentMap, mName, tArgument);
}