Add tx decode/encode subcommands

cmd/soroban-cli/src/commands/tx/decode.rs

@@ -0,0 +1,48 @@
+use clap::ValueEnum;
+use stellar_xdr::{
+    cli::{decode::InputFormat, Channel},
+    curr::TypeVariant,
+};
+
+#[derive(thiserror::Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Cli(#[from] stellar_xdr::cli::decode::Error),
+}
+
+/// Decode a transaction envelope from XDR to JSON
+#[derive(Debug, clap::Parser, Clone, Default)]
+pub struct Cmd {
+    // Output format
+    #[arg(long, value_enum, default_value_t)]
+    pub output: OutputFormat,
+}
+
+#[derive(Default, Clone, Copy, Debug, Eq, Hash, PartialEq, ValueEnum)]
+pub enum OutputFormat {
+    #[default]
+    Json,
+    JsonFormatted,
+}
+
+impl From<OutputFormat> for stellar_xdr::cli::decode::OutputFormat {
+    fn from(v: OutputFormat) -> Self {
+        match v {
+            OutputFormat::Json => Self::Json,
+            OutputFormat::JsonFormatted => Self::JsonFormatted,
+        }
+    }
+}
+
+impl Cmd {
+    pub fn run(&self) -> Result<(), Error> {
+        let cmd = stellar_xdr::cli::decode::Cmd {
+            files: vec![],
+            r#type: TypeVariant::TransactionEnvelope.to_string(),
+            input: InputFormat::SingleBase64,
+            output: self.output.into(),
+        };
+        cmd.run(&Channel::Curr)?;
+        Ok(())
+    }
+}

cmd/soroban-cli/src/commands/tx/encode.rs

@@ -0,0 +1,30 @@
+use stellar_xdr::{
+    cli::{
+        encode::{InputFormat, OutputFormat},
+        Channel,
+    },
+    curr::TypeVariant,
+};
+
+#[derive(thiserror::Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Cli(#[from] stellar_xdr::cli::encode::Error),
+}
+
+/// Encode a transaction envelope from JSON to XDR
+#[derive(Debug, clap::Parser, Clone, Default)]
+pub struct Cmd;
+
+impl Cmd {
+    pub fn run(&self) -> Result<(), Error> {
+        let cmd = stellar_xdr::cli::encode::Cmd {
+            files: vec![],
+            r#type: TypeVariant::TransactionEnvelope.to_string(),
+            input: InputFormat::Json,
+            output: OutputFormat::SingleBase64,
+        };
+        cmd.run(&Channel::Curr)?;
+        Ok(())
+    }
+}

cmd/soroban-cli/src/commands/tx/mod.rs

@@ -1,6 +1,8 @@
 use super::global;
 
 pub mod args;
+pub mod decode;
+pub mod encode;
 pub mod hash;
 pub mod help;
 pub mod new;
@@ -28,6 +30,8 @@ pub enum Cmd {
     Sign(sign::Cmd),
     /// Simulate a transaction envelope from stdin
     Simulate(simulate::Cmd),
+    Decode(decode::Cmd),
+    Encode(encode::Cmd),
 }
 
 #[derive(thiserror::Error, Debug)]
@@ -44,6 +48,10 @@ pub enum Error {
     Sign(#[from] sign::Error),
     #[error(transparent)]
     Simulate(#[from] simulate::Error),
+    #[error(transparent)]
+    Decode(#[from] decode::Error),
+    #[error(transparent)]
+    Encode(#[from] encode::Error),
 }
 
 impl Cmd {
@@ -55,6 +63,8 @@ impl Cmd {
             Cmd::Send(cmd) => cmd.run(global_args).await?,
             Cmd::Sign(cmd) => cmd.run(global_args).await?,
             Cmd::Simulate(cmd) => cmd.run(global_args).await?,
+            Cmd::Decode(cmd) => cmd.run()?,
+            Cmd::Encode(cmd) => cmd.run()?,
         };
         Ok(())
     }