taler-rust

GNU Taler code in Rust. Largely core banking integrations.
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cyclos-codegen.rs (2833B)

      1 /*
      2   This file is part of TALER
      3   Copyright (C) 2025, 2026 Taler Systems SA
      4 
      5   TALER is free software; you can redistribute it and/or modify it under the
      6   terms of the GNU Affero General Public License as published by the Free Software
      7   Foundation; either version 3, or (at your option) any later version.
      8 
      9   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
     10   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
     11   A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details.
     12 
     13   You should have received a copy of the GNU Affero General Public License along with
     14   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
     15 */
     16 
     17 use std::io::Write;
     18 use std::io::stdout;
     19 
     20 use clap::Parser;
     21 use http_client::builder::Req;
     22 use hyper::Method;
     23 use taler_build::long_version;
     24 use url::Url;
     25 
     26 /// Cyclos API schema codegen
     27 #[derive(clap::Parser, Debug)]
     28 #[command(long_version = long_version(), about, long_about = None)]
     29 struct Args {
     30     kind: Kind,
     31     ty: String,
     32 }
     33 
     34 #[derive(Debug, Clone, Copy, clap::ValueEnum)]
     35 enum Kind {
     36     Error,
     37     Enum,
     38 }
     39 
     40 #[tokio::main]
     41 async fn main() -> anyhow::Result<()> {
     42     let args = Args::parse();
     43     let client = http_client::client()?;
     44     let api: serde_json::Value = Req::new(
     45         &client,
     46         Method::GET,
     47         &Url::parse("https://demo.cyclos.org/api/").unwrap(),
     48         "openapi.json",
     49     )
     50     .send()
     51     .await
     52     .unwrap()
     53     .1
     54     .json()
     55     .await?;
     56     let schemas = &api["components"]["schemas"];
     57 
     58     let out = &mut stdout().lock();
     59     let ty = &schemas[&args.ty];
     60     let lines: Vec<_> = ty["description"].as_str().unwrap().lines().collect();
     61 
     62     match args.kind {
     63         Kind::Error => writeln!(
     64             out,
     65             "#[derive(Debug, serde::Deserialize, thiserror::Error)]"
     66         )?,
     67         Kind::Enum => writeln!(out, "#[derive(Debug, serde::Deserialize)]")?,
     68     }
     69     writeln!(out, "#[serde(rename_all = \"camelCase\")]")?;
     70     writeln!(out, "/// {}", lines[0])?;
     71     writeln!(out, "pub enum {} {{", args.ty)?;
     72     for (i, l) in lines[2..].iter().enumerate() {
     73         let name = ty["enum"][i].as_str().unwrap();
     74         let mut split = l.split("`").skip(1);
     75         let code = split.next().unwrap();
     76         let msg = split
     77             .next()
     78             .unwrap()
     79             .strip_prefix(": ")
     80             .unwrap()
     81             .trim_end_matches('.');
     82         assert_eq!(name, code);
     83         match args.kind {
     84             Kind::Error => writeln!(out, "    #[error(\"{name} - {msg}\")]")?,
     85             Kind::Enum => writeln!(out, "    /// {msg}")?,
     86         }
     87         writeln!(
     88             out,
     89             "    {}{},",
     90             name.chars().next().unwrap().to_uppercase(),
     91             &name[1..]
     92         )?;
     93     }
     94     writeln!(out, "}}")?;
     95 
     96     Ok(())
     97 }