47 lines
1.7 KiB
Rust
47 lines
1.7 KiB
Rust
fn parse_after_whitespace(char_splitted_command_line: &mut Vec<char>, argv: &mut Vec<String>) -> Vec<String> {
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let current_char_option = char_splitted_command_line.pop();
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if current_char_option.is_none() {
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argv.to_vec()
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} else {
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let current_char = current_char_option.unwrap();
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if current_char.is_whitespace() {
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parse_after_whitespace(char_splitted_command_line, argv)
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} else {
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parse_initial_state(char_splitted_command_line, &mut String::from(current_char.to_string()), argv)
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}
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}
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}
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fn parse_initial_state(char_splitted_command_line: &mut Vec<char>, current_arg: &mut String, argv: &mut Vec<String>) -> Vec<String> {
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let current_char_option = char_splitted_command_line.pop();
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if current_char_option.is_none() {
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argv.push(current_arg.to_string());
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argv.to_vec()
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} else {
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let current_char = current_char_option.unwrap();
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if current_char.is_whitespace() {
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argv.push(current_arg.to_string());
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parse_after_whitespace(char_splitted_command_line, argv)
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} else {
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current_arg.push(current_char);
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parse_initial_state(char_splitted_command_line, current_arg, argv)
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}
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}
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}
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fn split_string_in_chars(string_to_split: &String) -> Vec<char> {
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string_to_split.chars().rev().collect()
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}
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pub fn parse(command_line: &String) -> Vec<String> {
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let mut argv: Vec<String> = Vec::new();
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let mut char_splitted_command_line: Vec<char> = split_string_in_chars(&command_line);
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let mut new_arg = String::new();
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argv = parse_initial_state(&mut char_splitted_command_line, &mut new_arg, &mut argv);
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argv
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}
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