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Improve how we indicate that a command arg is optional

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This commit is contained in:
cyqsimon
2023-08-20 17:32:56 +08:00
committed by Henrik Friedrichsen
parent bd80670345
commit 4942647e1c
1 changed files with 56 additions and 30 deletions
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86
src/command.rs
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@@ -320,10 +320,22 @@ fn handle_aliases(input: &str) -> &str {
#[derive(Clone, Serialize, Deserialize, Debug)]
pub enum CommandParseError {
NoSuchCommand { cmd: String },
InsufficientArgs { cmd: String, hint: Option<String> },
BadEnumArg { arg: String, accept: Vec<String> },
ArgParseError { arg: String, err: String },
NoSuchCommand {
cmd: String,
},
InsufficientArgs {
cmd: String,
hint: Option<String>,
},
BadEnumArg {
arg: String,
accept: Vec<String>,
optional: bool,
},
ArgParseError {
arg: String,
err: String,
},
}
impl fmt::Display for CommandParseError {
@@ -338,12 +350,17 @@ impl fmt::Display for CommandParseError {
format!("\"{cmd}\" requires additional arguments")
}
}
BadEnumArg { arg, accept } => {
format!(
"Illegal argument \"{}\": supported values are {}",
arg,
accept.join("|")
)
BadEnumArg {
arg,
accept,
optional,
} => {
let accept = accept.join("|");
if *optional {
format!("Argument \"{arg}\" should be one of {accept} or be omitted")
} else {
format!("Argument \"{arg}\" should be one of {accept}")
}
}
ArgParseError { arg, err } => format!("Error with argument \"{arg}\": {err}"),
};
@@ -399,7 +416,8 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
Some("current") => Ok(Command::AddCurrent),
Some(arg) => Err(BadEnumArg {
arg: arg.into(),
accept: vec!["**omit**".into(), "queue".into()],
accept: vec!["current".into()],
optional: true,
}),
None => Ok(Command::Add),
}?,
@@ -408,7 +426,8 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
Some("current") => Ok(Command::SaveCurrent),
Some(arg) => Err(BadEnumArg {
arg: arg.into(),
accept: vec!["**omit**".into(), "queue".into()],
accept: vec!["queue".into(), "current".into()],
optional: true,
}),
None => Ok(Command::Save),
}?,
@@ -500,7 +519,6 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
Some(arg) => Err(BadEnumArg {
arg: arg.into(),
accept: vec![
"**omit**".into(),
"list".into(),
"playlist".into(),
"queue".into(),
@@ -510,6 +528,7 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
"none".into(),
"off".into(),
],
optional: true,
}),
None => Ok(None),
}?;
@@ -521,7 +540,8 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
Some("off") => Ok(Some(false)),
Some(arg) => Err(BadEnumArg {
arg: arg.into(),
accept: vec!["**omit**".into(), "on".into(), "off".into()],
accept: vec!["on".into(), "off".into()],
optional: true,
}),
None => Ok(None),
}?;
@@ -539,6 +559,7 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
_ => Err(BadEnumArg {
arg: target_mode_raw.into(),
accept: vec!["selected".into(), "current".into()],
optional: false,
}),
}?;
Command::Share(target_mode)
@@ -555,6 +576,7 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
_ => Err(BadEnumArg {
arg: target_mode_raw.into(),
accept: vec!["selected".into(), "current".into()],
optional: false,
}),
}?;
Command::Open(target_mode)
@@ -570,6 +592,7 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
_ => Err(BadEnumArg {
arg: goto_mode_raw.into(),
accept: vec!["album".into(), "artist".into()],
optional: false,
}),
}?;
Command::Goto(goto_mode)
@@ -604,6 +627,7 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
"left".into(),
"right".into(),
],
optional: false,
}),
}?
};
@@ -651,6 +675,7 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
_ => Err(BadEnumArg {
arg: shift_dir_raw.into(),
accept: vec!["up".into(), "down".into()],
optional: false,
}),
}?;
let amount = match args.get(1) {
@@ -722,24 +747,24 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
"added".into(),
"artist".into(),
],
optional: false,
}),
}?;
let direction = match args.get(1) {
Some(&direction_raw) => match direction_raw {
"a" | "asc" | "ascending" => Ok(SortDirection::Ascending),
"d" | "desc" | "descending" => Ok(SortDirection::Descending),
_ => Err(BadEnumArg {
arg: direction_raw.into(),
accept: vec![
"a".into(),
"asc".into(),
"ascending".into(),
"d".into(),
"desc".into(),
"descending".into(),
],
}),
},
let direction = match args.get(1).copied() {
Some("a" | "asc" | "ascending") => Ok(SortDirection::Ascending),
Some("d" | "desc" | "descending") => Ok(SortDirection::Descending),
Some(direction_raw) => Err(BadEnumArg {
arg: direction_raw.into(),
accept: vec![
"a".into(),
"asc".into(),
"ascending".into(),
"d".into(),
"desc".into(),
"descending".into(),
],
optional: true,
}),
None => Ok(SortDirection::Ascending),
}?;
Command::Sort(key, direction)
@@ -756,6 +781,7 @@ pub fn parse(input: &str) -> Result<Vec<Command>, CommandParseError> {
_ => Err(BadEnumArg {
arg: target_mode_raw.into(),
accept: vec!["selected".into(), "current".into()],
optional: false,
}),
}?;
Command::ShowRecommendations(target_mode)