taler-rust

GNU Taler code in Rust. Largely core banking integrations.
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cli.rs (2210B)

      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 as _;
     18 
     19 use compact_str::CompactString;
     20 
     21 use crate::config::Config;
     22 
     23 /// Inspect the configuration
     24 #[derive(clap::Subcommand, Debug)]
     25 pub enum ConfigCmd {
     26     /// Lookup config value
     27     Get {
     28         section: CompactString,
     29         option: CompactString,
     30         /// Interpret value as path with dollar-expansion
     31         #[arg(short, long)]
     32         filename: bool,
     33     },
     34     /// Substitute variables in a path
     35     Pathsub { path_expr: CompactString },
     36     /// Dump the configuration
     37     Dump {
     38         /// output extra diagnostics
     39         #[arg(short, long)]
     40         diagnostics: bool,
     41     },
     42 }
     43 
     44 impl ConfigCmd {
     45     pub fn run(self, cfg: &Config) -> anyhow::Result<()> {
     46         let mut out = std::io::stdout().lock();
     47         match self {
     48             ConfigCmd::Get {
     49                 section,
     50                 option,
     51                 filename,
     52             } => {
     53                 let sect = cfg.section(&section);
     54                 let value = if filename {
     55                     sect.path(&option).require()?
     56                 } else {
     57                     sect.str(&option).require()?
     58                 };
     59                 writeln!(&mut out, "{value}")?;
     60             }
     61             ConfigCmd::Pathsub { path_expr } => {
     62                 let path = cfg.pathsub(&path_expr, 0)?;
     63                 writeln!(&mut out, "{path}")?;
     64             }
     65             ConfigCmd::Dump { diagnostics } => {
     66                 cfg.print(&mut out, diagnostics)?;
     67             }
     68         }
     69         Ok(())
     70     }
     71 }