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bb5598aee7
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04fd13b801 |
1 changed files with 48 additions and 1 deletions
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@ -1,8 +1,52 @@
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use crate::command::command_builder::CommandBuilder;
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use crate::command::command_sequence::CommandSequence;
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fn parse_quote(characters: &mut Vec<char>) -> Result<String, UnmatchedQuoteError> {
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if characters.is_empty() {
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Err(UnmatchedQuoteError)
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} else {
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let mut quoted_arg = String::default();
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let mut current_char = characters.pop().unwrap();
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while !characters.is_empty() && current_char != '\'' {
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quoted_arg.push(current_char);
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current_char = characters.pop().unwrap();
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}
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Ok(quoted_arg)
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}
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}
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fn build_argv(characters: &mut Vec<char>, current_arg: &mut String) -> Vec<String> {
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if characters.is_empty() {
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vec![]
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} else {
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let current_char = characters.pop().unwrap();
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if current_char.is_whitespace() {
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if !current_arg.is_empty() {
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let mut argv: Vec<String> = vec![current_arg.clone()];
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argv.append(&mut build_argv(characters, &mut String::from("")));
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argv
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} else {
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build_argv(characters, current_arg)
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}
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} else if current_char == '\'' {
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let mut argv = vec![parse_quote(characters).unwrap()];
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argv.append(&mut build_argv(characters, &mut String::default()));
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argv
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} else {
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current_arg.push(current_char);
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build_argv(characters, current_arg)
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}
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}
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}
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pub fn parse_command_line(line: String) -> Option<CommandSequence> {
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let argv: Vec<String> = line.split_whitespace().map(|s| s.to_string()).collect();
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let mut characters: Vec<char> = line.chars().rev().collect();
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let argv = build_argv(&mut characters, &mut String::default());
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if !argv.is_empty() {
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let command = CommandBuilder::new(argv).build();
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@ -11,3 +55,6 @@ pub fn parse_command_line(line: String) -> Option<CommandSequence> {
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None
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}
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}
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#[derive(Debug)]
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struct UnmatchedQuoteError;
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