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fix string to U64 conversion

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- handle zero on input string
- handle upper and lower case prefixes
This commit is contained in:
Nikita Smith
2025-06-23 14:21:44 -07:00
committed by Ryan Fleury
parent a954c2125c
commit 91ddd214b3
1 changed files with 24 additions and 25 deletions
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src/base/base_strings.c
+24 -25
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@@ -616,36 +616,35 @@ s32_from_str8(String8 string, U32 radix)
internal B32
try_u64_from_str8_c_rules(String8 string, U64 *x)
{
B32 is_integer = 0;
if(str8_is_integer(string, 10) && !str8_match(str8_prefix(string, 1), str8_lit("0"), 0))
U64 radix, prefix_size;
// hex
if(str8_match(str8_prefix(string, 2), str8_lit("0x"), StringMatchFlag_CaseInsensitive))
{
is_integer = 1;
*x = u64_from_str8(string, 10);
radix = 0x10, prefix_size = 2;
}
// binary
else if(str8_match(str8_prefix(string, 2), str8_lit("0b"), StringMatchFlag_CaseInsensitive))
{
radix = 2, prefix_size = 2;
}
// octal
else if(str8_match(str8_prefix(string, 1), str8_lit("0"), StringMatchFlag_CaseInsensitive) && string.size > 1)
{
radix = 010, prefix_size = 1;
}
// decimal
else
{
String8 hex_string = str8_skip(string, 2);
if(str8_match(str8_prefix(string, 2), str8_lit("0x"), 0) &&
str8_is_integer(hex_string, 0x10))
{
is_integer = 1;
*x = u64_from_str8(hex_string, 0x10);
}
else if(str8_match(str8_prefix(string, 2), str8_lit("0b"), 0) && str8_is_integer(hex_string, 2))
{
is_integer = 1;
*x = u64_from_str8(hex_string, 2);
}
else
{
String8 oct_string = str8_skip(string, 1);
if(str8_match(str8_prefix(string, 1), str8_lit("0"), 0) && str8_is_integer(hex_string, 010))
{
is_integer = 1;
*x = u64_from_str8(oct_string, 010);
}
}
radix = 10, prefix_size = 0;
}
String8 integer = str8_skip(string, prefix_size);
B32 is_integer = str8_is_integer(integer, radix);
if(is_integer)
{
*x = u64_from_str8(integer, radix);
}
return is_integer;
}