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More help cleanup

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This commit is contained in:
greg 2019-06-06 22:36:44 -07:00
parent 7097775a4a
commit f88f2e8550
1 changed files with 18 additions and 15 deletions
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33
schala-repl/src/repl/help.rs
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@ -1,5 +1,6 @@
use std::fmt::Write as FmtWrite;
use super::command_tree::CommandTree;
use super::{Repl, InterpreterDirectiveOutput};
pub fn help(repl: &mut Repl, arguments: &[&str]) -> InterpreterDirectiveOutput {
@ -7,26 +8,28 @@ pub fn help(repl: &mut Repl, arguments: &[&str]) -> InterpreterDirectiveOutput {
[] => return global_help(repl),
commands => {
let dirs = repl.get_directives();
let mut directive_list = dirs.get_children();
let mut matched_directive = None;
for cmd in commands {
let found = directive_list.iter().find(|directive| directive.get_cmd() == *cmd);
if let Some(dir) = found {
directive_list = dir.get_children();
}
matched_directive = found;
}
Some(if let Some(dir) = matched_directive {
format!("{}", dir.get_help())
} else {
format!("Last command not found")
Some(match get_directive_from_commands(commands, &dirs) {
None => format!("Directive `{}` not found", commands.last().unwrap()),
Some(dir) => format!("`{}` - {}", dir.get_cmd(), dir.get_help())
})
}
}
}
fn get_directive_from_commands<'a>(commands: &[&str], dirs: &'a CommandTree) -> Option<&'a CommandTree> {
let mut directive_list = dirs.get_children();
let mut matched_directive = None;
for cmd in commands {
let found = directive_list.iter().find(|directive| directive.get_cmd() == *cmd);
if let Some(dir) = found {
directive_list = dir.get_children();
}
matched_directive = found;
}
matched_directive
}
fn global_help(repl: &mut Repl) -> InterpreterDirectiveOutput {
let mut buf = String::new();