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| 1 | +use std::{ |
| 2 | + env, |
| 3 | + fs::{self}, |
| 4 | + io::{stdin, Cursor, IsTerminal, Write}, |
| 5 | + path::PathBuf, |
| 6 | + process::{self}, |
| 7 | +}; |
| 8 | + |
| 9 | +use serde_json::json; |
| 10 | +use stellar_xdr::curr; |
| 11 | + |
| 12 | +use crate::{commands::global, print::Print}; |
| 13 | + |
| 14 | +#[derive(thiserror::Error, Debug)] |
| 15 | +pub enum Error { |
| 16 | + #[error(transparent)] |
| 17 | + Io(#[from] std::io::Error), |
| 18 | + |
| 19 | + #[error(transparent)] |
| 20 | + StellarXdr(#[from] stellar_xdr::curr::Error), |
| 21 | + |
| 22 | + #[error(transparent)] |
| 23 | + SerdeJson(#[from] serde_json::Error), |
| 24 | + |
| 25 | + #[error(transparent)] |
| 26 | + Base64Decode(#[from] base64::DecodeError), |
| 27 | + |
| 28 | + #[error("Editor returned non-zero status")] |
| 29 | + EditorNonZeroStatus, |
| 30 | + |
| 31 | + #[error("No stdin detected")] |
| 32 | + NoStdin, |
| 33 | +} |
| 34 | + |
| 35 | +// Command to edit the transaction |
| 36 | +/// e.g. `stellar tx new manage-data --data-name hello --build-only | stellar tx edit` |
| 37 | +#[derive(Debug, clap::Parser, Clone, Default)] |
| 38 | +#[group(skip)] |
| 39 | +pub struct Cmd {} |
| 40 | + |
| 41 | +impl Cmd { |
| 42 | + pub fn run(&self, global_args: &global::Args) -> Result<(), Error> { |
| 43 | + let print = Print::new(global_args.quiet); |
| 44 | + let json: String = if stdin().is_terminal() { |
| 45 | + return Err(Error::NoStdin); |
| 46 | + } else { |
| 47 | + let mut input = String::new(); |
| 48 | + stdin().read_line(&mut input)?; |
| 49 | + let input = input.trim(); |
| 50 | + xdr_to_json::<curr::TransactionEnvelope>(input)? |
| 51 | + }; |
| 52 | + |
| 53 | + let path = tmp_file(&json)?; |
| 54 | + let editor = get_editor(); |
| 55 | + |
| 56 | + open_editor(&print, &editor, &path)?; |
| 57 | + |
| 58 | + let contents = fs::read_to_string(&path)?; |
| 59 | + let xdr = json_to_xdr::<curr::TransactionEnvelope>(&contents)?; |
| 60 | + fs::remove_file(&path)?; |
| 61 | + |
| 62 | + println!("{xdr}"); |
| 63 | + |
| 64 | + Ok(()) |
| 65 | + } |
| 66 | +} |
| 67 | + |
| 68 | +struct Editor { |
| 69 | + cmd: String, |
| 70 | + source: String, |
| 71 | + args: Vec<String>, |
| 72 | +} |
| 73 | + |
| 74 | +fn tmp_file(contents: &str) -> Result<PathBuf, Error> { |
| 75 | + let temp_dir = env::current_dir().unwrap_or(env::temp_dir()); |
| 76 | + let file_name = format!("stellar-xdr-{}.json", rand::random::<u64>()); |
| 77 | + let path = temp_dir.join(file_name); |
| 78 | + |
| 79 | + let mut file = fs::File::create(&path)?; |
| 80 | + file.write_all(contents.as_bytes())?; |
| 81 | + |
| 82 | + Ok(path) |
| 83 | +} |
| 84 | + |
| 85 | +fn get_editor() -> Editor { |
| 86 | + let (source, cmd) = env::var("STELLAR_EDITOR") |
| 87 | + .map(|val| ("STELLAR_EDITOR", val)) |
| 88 | + .or_else(|_| env::var("EDITOR").map(|val| ("EDITOR", val))) |
| 89 | + .or_else(|_| env::var("VISUAL").map(|val| ("VISUAL", val))) |
| 90 | + .unwrap_or_else(|_| ("default", "vim".to_string())); |
| 91 | + |
| 92 | + let parts: Vec<&str> = cmd.split_whitespace().collect(); |
| 93 | + let cmd = parts[0].to_string(); |
| 94 | + let args = &parts[1..] |
| 95 | + .iter() |
| 96 | + .map(|&s| s.to_string()) |
| 97 | + .collect::<Vec<String>>(); |
| 98 | + |
| 99 | + Editor { |
| 100 | + source: source.to_string(), |
| 101 | + cmd, |
| 102 | + args: args.clone(), |
| 103 | + } |
| 104 | +} |
| 105 | + |
| 106 | +fn open_editor(print: &Print, editor: &Editor, path: &PathBuf) -> Result<(), Error> { |
| 107 | + print.infoln(format!( |
| 108 | + "Opening editor with `{source}=\"{cmd}\"`...", |
| 109 | + source = editor.source, |
| 110 | + cmd = editor.cmd, |
| 111 | + )); |
| 112 | + |
| 113 | + let mut binding = process::Command::new(editor.cmd.clone()); |
| 114 | + let command = binding.args(editor.args.clone()).arg(path); |
| 115 | + |
| 116 | + // Windows doesn't have devices like /dev/tty. |
| 117 | + #[cfg(unix)] |
| 118 | + { |
| 119 | + use fs::File; |
| 120 | + let tty = File::open("/dev/tty")?; |
| 121 | + let tty_out = fs::OpenOptions::new().write(true).open("/dev/tty")?; |
| 122 | + let tty_err = fs::OpenOptions::new().write(true).open("/dev/tty")?; |
| 123 | + |
| 124 | + command |
| 125 | + .stdin(tty) |
| 126 | + .stdout(tty_out) |
| 127 | + .stderr(tty_err) |
| 128 | + .env("TERM", "xterm-256color"); |
| 129 | + } |
| 130 | + |
| 131 | + let status = command.spawn()?.wait()?; |
| 132 | + |
| 133 | + if status.success() { |
| 134 | + Ok(()) |
| 135 | + } else { |
| 136 | + Err(Error::EditorNonZeroStatus) |
| 137 | + } |
| 138 | +} |
| 139 | + |
| 140 | +fn xdr_to_json<T>(xdr_string: &str) -> Result<String, Error> |
| 141 | +where |
| 142 | + T: curr::ReadXdr + serde::Serialize, |
| 143 | +{ |
| 144 | + let tx = T::from_xdr_base64(xdr_string, curr::Limits::none())?; |
| 145 | + let mut schema: serde_json::Value = serde_json::to_value(tx)?; |
| 146 | + schema["$schema"] = json!( |
| 147 | + "https://github.com/stellar/rs-stellar-xdr/raw/main/xdr-json/curr/TransactionEnvelope.json" |
| 148 | + ); |
| 149 | + let json = serde_json::to_string_pretty(&schema)?; |
| 150 | + |
| 151 | + Ok(json) |
| 152 | +} |
| 153 | + |
| 154 | +fn json_to_xdr<T>(json_string: &str) -> Result<String, Error> |
| 155 | +where |
| 156 | + T: serde::de::DeserializeOwned + curr::WriteXdr, |
| 157 | +{ |
| 158 | + let mut schema: serde_json::Value = serde_json::from_str(json_string)?; |
| 159 | + |
| 160 | + if let Some(obj) = schema.as_object_mut() { |
| 161 | + obj.remove("$schema"); |
| 162 | + } |
| 163 | + |
| 164 | + let json_string = serde_json::to_string(&schema)?; |
| 165 | + |
| 166 | + let value: T = serde_json::from_str(json_string.as_str())?; |
| 167 | + let mut data = Vec::new(); |
| 168 | + let cursor = Cursor::new(&mut data); |
| 169 | + let mut limit = curr::Limited::new(cursor, curr::Limits::none()); |
| 170 | + value.write_xdr(&mut limit)?; |
| 171 | + |
| 172 | + Ok(value.to_xdr_base64(curr::Limits::none())?) |
| 173 | +} |
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