fix: print help if custom CLI is empty & replace unwrap where prossib…

…le (stellar#1068)

(cherry picked from commit efe5916)

cmd/soroban-cli/src/commands/contract/bindings/typescript.rs

@@ -61,13 +61,17 @@ pub enum Error {
     Fetch(#[from] fetch::Error),
     #[error(transparent)]
     Spec(#[from] contract_spec::Error),
+    #[error(transparent)]
+    Wasm(#[from] wasm::Error),
+    #[error("Failed to get file name from path: {0:?}")]
+    FailedToGetFileName(PathBuf),
 }
 
 impl Cmd {
     pub async fn run(&self) -> Result<(), Error> {
         let spec = if let Some(wasm) = &self.wasm {
             let wasm: wasm::Args = wasm.into();
-            wasm.parse().unwrap().spec
+            wasm.parse()?.spec
         } else {
             let fetch = contract::fetch::Cmd {
                 contract_id: self.contract_id.clone(),
@@ -100,7 +104,9 @@ impl Cmd {
             .ok()
             .unwrap_or_else(Network::futurenet);
         let absolute_path = self.output_dir.canonicalize()?;
-        let file_name = absolute_path.file_name().unwrap();
+        let file_name = absolute_path
+            .file_name()
+            .ok_or_else(|| Error::FailedToGetFileName(absolute_path.clone()))?;
         let contract_name = &file_name
             .to_str()
             .ok_or_else(|| Error::NotUtf8(file_name.to_os_string()))?;

cmd/soroban-cli/src/commands/contract/deploy.rs

@@ -85,6 +85,8 @@ pub enum Error {
     Config(#[from] config::Error),
     #[error(transparent)]
     StrKey(#[from] stellar_strkey::DecodeError),
+    #[error(transparent)]
+    Infallible(#[from] std::convert::Infallible),
 }
 
 impl Cmd {
@@ -204,11 +206,7 @@ fn get_contract_id(
     contract_id_preimage: ContractIdPreimage,
     network_passphrase: &str,
 ) -> Result<Hash, Error> {
-    let network_id = Hash(
-        Sha256::digest(network_passphrase.as_bytes())
-            .try_into()
-            .unwrap(),
-    );
+    let network_id = Hash(Sha256::digest(network_passphrase.as_bytes()).try_into()?);
     let preimage = HashIdPreimage::ContractId(HashIdPreimageContractId {
         network_id,
         contract_id_preimage,

cmd/soroban-cli/src/commands/contract/invoke.rs

@@ -167,8 +167,12 @@ impl Cmd {
             cmd = cmd.subcommand(build_custom_cmd(&name.to_string_lossy(), &spec)?);
         }
         cmd.build();
+        let long_help = cmd.render_long_help();
         let mut matches_ = cmd.get_matches_from(&self.slop);
-        let (function, matches_) = &matches_.remove_subcommand().unwrap();
+        let Some((function, matches_)) = &matches_.remove_subcommand() else {
+            println!("{long_help}");
+            std::process::exit(1);
+        };
 
         let func = spec.find_function(function)?;
         // create parsed_args in same order as the inputs to func
@@ -177,7 +181,7 @@ impl Cmd {
             .inputs
             .iter()
             .map(|i| {
-                let name = i.name.to_string().unwrap();
+                let name = i.name.to_string()?;
                 if let Some(mut val) = matches_.get_raw(&name) {
                     let mut s = val.next().unwrap().to_string_lossy().to_string();
                     if matches!(i.type_, ScSpecTypeDef::Address) {
@@ -205,7 +209,10 @@ impl Cmd {
                             &std::fs::read(arg_path)
                                 .map_err(|_| Error::MissingFileArg(arg_path.clone()))?,
                         )
-                        .unwrap())
+                        .map_err(|()| Error::CannotParseArg {
+                            arg: name.clone(),
+                            error: soroban_spec_tools::Error::Unknown,
+                        })?)
                     } else {
                         let file_contents = std::fs::read_to_string(arg_path)
                             .map_err(|_| Error::MissingFileArg(arg_path.clone()))?;
@@ -414,7 +421,6 @@ fn build_custom_cmd(name: &str, spec: &Spec) -> Result<clap::Command, Error> {
     if kebab_name != name {
         cmd = cmd.alias(kebab_name);
     }
-    let func = spec.find_function(name).unwrap();
     let doc: &'static str = Box::leak(func.doc.to_string_lossy().into_boxed_str());
     let long_doc: &'static str = Box::leak(arg_file_help(doc).into_boxed_str());
 
@@ -428,7 +434,7 @@ fn build_custom_cmd(name: &str, spec: &Spec) -> Result<clap::Command, Error> {
             .alias(name.to_kebab_case())
             .num_args(1)
             .value_parser(clap::builder::NonEmptyStringValueParser::new())
-            .long_help(spec.doc(name, type_).unwrap());
+            .long_help(spec.doc(name, type_)?);
 
         file_arg = file_arg
             .long(&file_arg_name)

cmd/soroban-cli/src/commands/plugin.rs

@@ -19,6 +19,8 @@ pub enum Error {
     ExecutableNotFound(String, String),
     #[error(transparent)]
     Which(#[from] which::Error),
+    #[error(transparent)]
+    Regex(#[from] regex::Error),
 }
 
 const SUBCOMMAND_TOLERANCE: f64 = 0.75;
@@ -82,7 +84,7 @@ pub fn list() -> Result<Vec<String>, Error> {
     } else {
         r"^soroban-.*"
     };
-    let re = regex::Regex::new(re_str).unwrap();
+    let re = regex::Regex::new(re_str)?;
     Ok(which::which_re(re)?
         .filter_map(|b| {
             let s = b.file_name()?.to_str()?;

cmd/soroban-cli/src/utils.rs

@@ -131,6 +131,8 @@ pub mod parsing {
         CannotParseAccountId { account_id: String },
         #[error("cannot parse asset: {asset}")]
         CannotParseAsset { asset: String },
+        #[error(transparent)]
+        Regex(#[from] regex::Error),
     }
 
     pub fn parse_asset(str: &str) -> Result<Asset, Error> {
@@ -145,7 +147,7 @@ pub mod parsing {
         }
         let code = split[0];
         let issuer = split[1];
-        let re = Regex::new("^[[:alnum:]]{1,12}$").unwrap();
+        let re = Regex::new("^[[:alnum:]]{1,12}$")?;
         if !re.is_match(code) {
             return Err(Error::InvalidAssetCode {
                 asset: str.to_string(),