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includes/std: Fixed std::string::replace not replacing sequences correctly (#198)

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fix:  [Bug] std::string::replace("aa", "aa", "") returns "a" #1408
This commit is contained in:
paxcut
2023-11-15 14:25:34 -07:00
committed by GitHub
parent 52f7d9e77a
commit f23dbbb565
1 changed files with 18 additions and 22 deletions
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40
includes/std/string.pat
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@@ -209,31 +209,27 @@ namespace std::string {
@param replace The substring to replace with.
@return The string with the replacements.
*/
fn replace(str string, str pattern, str replace) {
u32 string_len, pattern_len, replace_len;
string_len = std::string::length(string);
pattern_len = std::string::length(pattern);
replace_len = std::string::length(replace);
if (pattern_len > string_len)
return string;
fn replace(str string, str pattern, str replace) {
s32 string_len = std::string::length(string);
s32 pattern_len = std::string::length(pattern);
if (pattern_len > string_len || pattern_len * string_len == 0 )
return string;
str result;
u32 i;
while (i <= (string_len - pattern_len)) {
if (std::string::substr(string, i, pattern_len) == pattern) {
result = result + replace;
i = i + pattern_len;
} else {
result = result + std::string::at(string, i);
i = i + 1;
s32 string_index;
s32 remaining_len = string_len;
while (pattern_len <= remaining_len) {
if (std::string::substr(string, string_index, pattern_len) == pattern) {
result += replace;
string_index += pattern_len;
} else {
result += std::string::at(string, string_index);
string_index += 1;
}
remaining_len = string_len - string_index;
}
result = result + std::string::substr(string,string_len-pattern_len+1,pattern_len);
result += std::string::substr(string, string_index, remaining_len );
return result;
};
}