RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 07:18:11 +00:00
Code Issues Activity Actions

AK: Add case insensitive version of starts_with

Browse source
This commit is contained in:
Luke 2020-07-18 17:59:38 +01:00 • committed by Andreas Kling
parent ccc929dcf9
commit a5ecb9bd6b
11 changed files with 53 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

25
AK/StringUtils.cpp
View file

@ -202,6 +202,31 @@ bool ends_with(const StringView& str, const StringView& end, CaseSensitivity cas
return true;
}
bool starts_with(const StringView& str, const StringView& start, CaseSensitivity case_sensitivity)
{
if (start.is_empty())
return true;
if (str.is_empty())
return false;
if (start.length() > str.length())
return false;
if (str.characters_without_null_termination() == start.characters_without_null_termination())
return true;
if (case_sensitivity == CaseSensitivity::CaseSensitive)
return !memcmp(str.characters_without_null_termination(), start.characters_without_null_termination(), start.length());
auto str_chars = str.characters_without_null_termination();
auto start_chars = start.characters_without_null_termination();
size_t si = 0;
for (size_t starti = 0; starti < start.length(); ++si, ++starti) {
if (to_lowercase(str_chars[si]) != to_lowercase(start_chars[starti]))
return false;
}
return true;
}
}
}