Parsing string in rust - parsing

Question

I want to parse the string
"{\"hello , world\",quote,\"\\\",\\\"q\"}"into vec!["hello , world", "quote", "\",\"q"]
I have tried to for loop and check " then split , but it has many corner cases that I couldn't solve, such as \" in the quote.

Answer 1

I got it! Just for loop and check the tokens. Then, use serde_json to parse the data.
fn parse_code(code: &str) -> Vec<String> {
let code = code.trim_end_matches("}").trim_start_matches("{");
let mut ans = Vec::new();
let mut start_string = false;
let mut extra = false;
let mut pre = '\0';
for ch in code.chars() {
if ch == '"' && pre != '\\' {
start_string = !start_string;
}
if pre == ',' && start_string == false {
start_string = true;
extra = true;
ans.push('"');
}
if ch == ',' && start_string == true && extra == true {
start_string = false;
extra = false;
ans.push('"');
}
ans.push(ch);
pre = ch;
}
if extra {
ans.push('"');
}
let ans: String = ans.iter().collect();
let code = "[".to_string() + &ans + "]";
serde_json::from_str::<Value>(&code)
.unwrap()
.as_array()
.unwrap()
.iter()
.map(|x| x.as_str().unwrap().to_string())
.collect()
}