split a string by commas, but commas in a token - regex

Question

Let's say I have this:
something,"another thing"
This can be split easily with a normal split function.
Now I want to have more complicated syntax and I do:
something,"in a string, oooh",rgba(4,2,0)
This does not work with a regular split function.
I tried using things like replacing commas inside of specific types of tokens, but that became too over-complicated and I feel there has to be a better way.
Then I tried with regular expressions, which worked, until I had to add a new feature, which wouldn't work with the regexp I had (which was pretty bad), also regexp matches can be slow, and this is supposed to be as fast as possible.
What would be a better way to solve this?
Here is the source repo for extra context https://github.com/hyprland-community/hyprparse
And the format in question is the hyprland config format

Answer 1

Iterate over the string keeping a context state:
None
Inside a "..."
Inside a (...)
Inside a context, comma has no separator meaning.
Limitations: This is a midnight hack!
See also Rust Playground
fn split(s: String) -> Vec<String> {
let mut context = None;
let mut i = 0;
let mut start = 0;
let mut items = Vec::new();
for c in s.chars() {
if context == Some('"') {
if c == '"' {
context = None;
}
i = i+1;
continue;
} else if context == Some('(') {
if c == ')' {
context = None;
}
i = i+1;
continue;
}
if c == '"' || c == '(' {
context = Some(c);
}
if c == ',' && context.is_none() {
items.push(s[start..i].to_string());
start = i + 1;
}
i = i+1;
}
items.push(s[start..i].to_string());
items
}
fn main() {
let s = "something,\"in a string, oooh\",rgba(4,2,0)".to_string();
println!("{:?}", split(s));
// -> ["something", "\"in a string, oooh\"", "rgba(4,2,0)"]
}

Answer 2

Thanks for all the help everyone, I eventually came up with my own solution with the help of people I knew IRL, here is my solution:
fn previous_rgb(index: usize, chars: Vec<char>) -> bool {
let string: String = chars[index-3..index].iter().collect();
let string = string.as_str();
if string == "gba" || string == "rgb" {
true
} else {
false
}
}
fn splitter<Str: ToString>(s: Str) -> Vec<String> {
let mut is_in_rgb = false;
let mut is_in_str = false;
let mut last = 0;
let chars: Vec<_> = s.to_string().chars().collect();
let mut final_str = vec![];
for (index, c) in chars.iter().enumerate() {
if *c == '(' && previous_rgb(index, chars.clone()) && !is_in_str {
is_in_rgb = true;
} else if *c == ')' && is_in_rgb && !is_in_str {
is_in_rgb = false;
} else if *c == '"' && is_in_str {
is_in_str = false;
} else if *c == '"' && !is_in_str {
is_in_str = true;
} else if *c == ',' && !is_in_str && !is_in_rgb {
final_str.push(chars[last..index].iter().collect());
last = index + 1
};
}
final_str.push(chars[last..].iter().collect());
final_str
}
fn main() {
let splitted = splitter(r#"test,test: rgba(5,4,3),"test2, seperated""#);
println!("{splitted:?}");
}