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from_string.cpp

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This commit is contained in:
Antonio SJ Musumeci 2025-10-02 20:18:57 -05:00
parent 4820724f9d
commit efa630db5c
1 changed files with 52 additions and 0 deletions
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52
src/from_string.cpp
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@ -65,6 +65,58 @@ str::from(const std::string_view val_,
return 0;
}
int
str::from(const std::string_view val_,
uint32_t *rv_)
{
uint64_t tmp;
const int base = 10;
auto [ptr,ec] = std::from_chars(val_.begin(),
val_.end(),
tmp,
base);
if(ec != std::errc{})
return -EINVAL;
*rv_ = tmp;
if(ptr == val_.end())
return 0;
switch(*ptr)
{
case 'b':
case 'B':
*rv_ *= 1ULL;
break;
case 'k':
case 'K':
*rv_ *= 1024ULL;
break;
case 'm':
case 'M':
*rv_ *= (1024ULL * 1024ULL);
break;
case 'g':
case 'G':
*rv_ *= (1024ULL * 1024ULL * 1024ULL);
break;
case 't':
case 'T':
*rv_ *= (1024ULL * 1024ULL * 1024ULL * 1024ULL);
break;
default:
return -EINVAL;
}
return 0;
}
int
str::from(const std::string_view val_,
int64_t *rv_)