rust_web_server/json/array/string/
mod.rs

1use crate::json::array::RawUnprocessedJSONArray;
2use crate::symbol::SYMBOL;
3
4#[cfg(test)]
5mod example_list_string_with_asserts;
6#[cfg(test)]
7mod example_list_string;
8
9pub struct JSONArrayOfStrings;
10impl JSONArrayOfStrings {
11    pub fn parse_as_list_string(json : String) -> Result<Vec<String>, String> {
12        let items = RawUnprocessedJSONArray::split_into_vector_of_strings(json).unwrap();
13        let mut list: Vec<String> = vec![];
14        for item in items {
15            let boxed_parse = item.parse::<String>();
16            let mut string: String = boxed_parse.unwrap().trim().to_string();
17            let starts_with_quotation_mark = string.chars().next().unwrap() == '"';
18            let ends_with_quotation_mark = string.chars().last().unwrap() == '"';
19            if starts_with_quotation_mark && ends_with_quotation_mark {
20                let number_of_characters = string.len() - 1;
21                string = string[1..number_of_characters].to_string();
22            } else {
23                let message = format!("not a string: {}", item.to_string());
24                return Err(message);
25            }
26            list.push(string);
27        }
28        Ok(list)
29    }
30
31    pub fn to_json_from_list_string(items : &Vec<String>) -> Result<String, String> {
32        let mut json_vec = vec![];
33        json_vec.push(SYMBOL.opening_square_bracket.to_string());
34        for (pos, item) in items.iter().enumerate() {
35            json_vec.push(SYMBOL.quotation_mark.to_string());
36            json_vec.push(item.to_string());
37            json_vec.push(SYMBOL.quotation_mark.to_string());
38            if pos != items.len() - 1 {
39                json_vec.push(SYMBOL.comma.to_string());
40            }
41        }
42        json_vec.push(SYMBOL.closing_square_bracket.to_string());
43
44        let result = json_vec.join(SYMBOL.empty_string);
45        Ok(result)
46    }
47
48}