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fixed String::contains

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This commit is contained in:
Noel Berry 2022-10-03 00:31:00 -07:00
parent f06c38ff3e
commit 36b0d266b1
1 changed files with 29 additions and 72 deletions
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101
src/blah_string.cpp
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@ -4,19 +4,22 @@ using namespace Blah;
namespace
{
char blah_to_lower(char c)
constexpr char blah_to_lower(char c)
{
if (c >= 'A' && c <= 'Z') return c - 'A' + 'a';
return c;
}
int blah_strlen(const char* cstr)
constexpr int blah_strlen(const char* cstr)
{
int len = 0;
if (cstr)
while (*(cstr + len) != '\0' && len < INT32_MAX) len++;
return len;
}
constexpr bool blah_compare_ignore_case(char a, char b) { return blah_to_lower(a) == blah_to_lower(b); };
constexpr bool blah_compare_with_case(char a, char b) { return a == b; };
}
void BaseString::assign(const char* cstr, const char* cstr_end)
@ -144,24 +147,13 @@ bool BaseString::starts_with(const char* cstr, bool ignore_case) const
return length() == 0;
const char* ptr = s_ptr();
auto compare = (ignore_case ? &blah_compare_ignore_case : &blah_compare_with_case);
if (ignore_case)
while (*cstr != '\0')
{
while (*cstr != '\0')
{
if (blah_to_lower(*cstr) != blah_to_lower(*ptr))
return false;
cstr++; ptr++;
}
}
else
{
while (*cstr != '\0')
{
if (*cstr != *ptr)
return false;
cstr++; ptr++;
}
if (!(*compare)(*cstr, *ptr))
return false;
cstr++; ptr++;
}
return true;
@ -177,24 +169,13 @@ bool BaseString::ends_with(const char* cstr, bool ignore_case) const
return false;
const char* ptr = s_ptr() + length() - len;
auto compare = (ignore_case ? &blah_compare_ignore_case : &blah_compare_with_case);
if (ignore_case)
while (*cstr != '\0')
{
while (*cstr != '\0')
{
if (blah_to_lower(*cstr) != blah_to_lower(*ptr))
return false;
cstr++; ptr++;
}
}
else
{
while (*cstr != '\0')
{
if (*cstr != *ptr)
return false;
cstr++; ptr++;
}
if (!(*compare)(*cstr, *ptr))
return false;
cstr++; ptr++;
}
return true;
@ -210,40 +191,24 @@ bool BaseString::contains(const char* cstr, bool ignore_case) const
return false;
const char* ptr = s_ptr();
const char* end = s_ptr() + len;
const char* end = s_ptr() + length() - len;
auto compare = (ignore_case ? &blah_compare_ignore_case : &blah_compare_with_case);
while (ptr < end)
{
const char* at = ptr;
bool match = true;
const char* a = ptr;
const char* b = cstr;
if (ignore_case)
while (*b != '\0')
{
while (*cstr != '\0')
{
if (blah_to_lower(*cstr) != blah_to_lower(*at))
{
match = false;
break;
}
cstr++; at++;
}
}
else
{
while (*cstr != '\0')
{
if (*cstr != *at)
{
match = false;
break;
}
cstr++; at++;
}
if (!(*compare)(*a, *b))
goto NEXT;
a++; b++;
}
if (match)
return true;
return true;
NEXT:
ptr++;
}
return false;
@ -282,17 +247,9 @@ int BaseString::last_index_of(char ch) const
bool BaseString::equals(const char* other, bool ignore_case) const
{
const char* a = s_ptr(); const char* b = other;
if (ignore_case)
{
while (blah_to_lower(*a) == blah_to_lower(*b) && *a != '\0') { a++; b++; }
return blah_to_lower(*a) == blah_to_lower(*b);
}
else
{
while (*a == *b && *a != '\0') { a++; b++; }
return *a == *b;
}
auto compare = (ignore_case ? &blah_compare_ignore_case : &blah_compare_with_case);
while ((*compare)(*a, *b) && *a != '\0') { a++; b++; }
return (*compare)(*a, *b);
}
namespace