diff options
Diffstat (limited to 'src/conversion.cpp')
-rw-r--r-- | src/conversion.cpp | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/conversion.cpp b/src/conversion.cpp new file mode 100644 index 0000000..79b3587 --- /dev/null +++ b/src/conversion.cpp @@ -0,0 +1,41 @@ +#include "conversion.hpp" + +#include <climits> +#include <stdexcept> + +unsigned int str_to_uint(const std::string_view &str) +{ + if (str.at(0) == '-') + { + throw "Less than 0"; + } + + std::size_t waste_pos = 0; + + uint64_t num = 0; + + try + { + num = std::stoul(str.data(), &waste_pos, NUMBER_BASE); + } + catch (const std::invalid_argument &exc) + { + throw "Not a number"; + } + catch (const std::out_of_range &exc) + { + throw "Out of range"; + } + + if (waste_pos != str.length()) + { + throw "Not a number"; + } + + if (num > UINT_MAX) + { + throw "Out of range"; + } + + return static_cast<unsigned int>(num); +} |