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LibCore: Add support for double on argparse
Code is pretty trivial. If someone needs "float" support, a copy-paste will be in place. Build system was confused between math.h from rootfs, and toolchain. I fixed the problem caused by `math.h` by locally using the builtin `isnan()` from the compiler. It's ugly - but works. I am looking for other alternatives.
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2 changed files with 23 additions and 0 deletions
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@ -324,6 +324,28 @@ void ArgsParser::add_positional_argument(int& value, const char* help_string, co
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add_positional_argument(move(arg));
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}
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static constexpr bool isnan(double __x) { return __builtin_isnan(__x); }
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void ArgsParser::add_positional_argument(double& value, const char* help_string, const char* name, Required required)
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{
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Arg arg {
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help_string,
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name,
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required == Required::Yes ? 1 : 0,
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1,
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[&value](const char* s) {
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char *p;
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double v = strtod(s, &p);
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bool valid_value = !isnan(v) && p != s;
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if (valid_value) {
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value = v;
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}
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return valid_value;
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}
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};
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add_positional_argument(move(arg));
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}
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void ArgsParser::add_positional_argument(Vector<const char*>& values, const char* help_string, const char* name, Required required)
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{
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Arg arg {
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@ -77,6 +77,7 @@ public:
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void add_positional_argument(Arg&&);
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void add_positional_argument(const char*& value, const char* help_string, const char* name, Required required = Required::Yes);
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void add_positional_argument(int& value, const char* help_string, const char* name, Required required = Required::Yes);
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void add_positional_argument(double& value, const char* help_string, const char* name, Required required = Required::Yes);
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void add_positional_argument(Vector<const char*>& value, const char* help_string, const char* name, Required required = Required::Yes);
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private:
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