pacman/
pacman.rs

1use clap::{Arg, ArgAction, Command};
2
3fn main() {
4    let matches = Command::new("pacman")
5        .about("package manager utility")
6        .version("5.2.1")
7        .subcommand_required(true)
8        .arg_required_else_help(true)
9        // Query subcommand
10        //
11        // Only a few of its arguments are implemented below.
12        .subcommand(
13            Command::new("query")
14                .short_flag('Q')
15                .long_flag("query")
16                .about("Query the package database.")
17                .arg(
18                    Arg::new("search")
19                        .short('s')
20                        .long("search")
21                        .help("search locally installed packages for matching strings")
22                        .conflicts_with("info")
23                        .action(ArgAction::Set)
24                        .num_args(1..),
25                )
26                .arg(
27                    Arg::new("info")
28                        .long("info")
29                        .short('i')
30                        .conflicts_with("search")
31                        .help("view package information")
32                        .action(ArgAction::Set)
33                        .num_args(1..),
34                ),
35        )
36        // Sync subcommand
37        //
38        // Only a few of its arguments are implemented below.
39        .subcommand(
40            Command::new("sync")
41                .short_flag('S')
42                .long_flag("sync")
43                .about("Synchronize packages.")
44                .arg(
45                    Arg::new("search")
46                        .short('s')
47                        .long("search")
48                        .conflicts_with("info")
49                        .action(ArgAction::Set)
50                        .num_args(1..)
51                        .help("search remote repositories for matching strings"),
52                )
53                .arg(
54                    Arg::new("info")
55                        .long("info")
56                        .conflicts_with("search")
57                        .short('i')
58                        .action(ArgAction::SetTrue)
59                        .help("view package information"),
60                )
61                .arg(
62                    Arg::new("package")
63                        .help("packages")
64                        .required_unless_present("search")
65                        .action(ArgAction::Set)
66                        .num_args(1..),
67                ),
68        )
69        .get_matches();
70
71    match matches.subcommand() {
72        Some(("sync", sync_matches)) => {
73            if sync_matches.contains_id("search") {
74                let packages: Vec<_> = sync_matches
75                    .get_many::<String>("search")
76                    .expect("contains_id")
77                    .map(|s| s.as_str())
78                    .collect();
79                let values = packages.join(", ");
80                println!("Searching for {values}...");
81                return;
82            }
83
84            let packages: Vec<_> = sync_matches
85                .get_many::<String>("package")
86                .expect("is present")
87                .map(|s| s.as_str())
88                .collect();
89            let values = packages.join(", ");
90
91            if sync_matches.get_flag("info") {
92                println!("Retrieving info for {values}...");
93            } else {
94                println!("Installing {values}...");
95            }
96        }
97        Some(("query", query_matches)) => {
98            if let Some(packages) = query_matches.get_many::<String>("info") {
99                let comma_sep = packages.map(|s| s.as_str()).collect::<Vec<_>>().join(", ");
100                println!("Retrieving info for {comma_sep}...");
101            } else if let Some(queries) = query_matches.get_many::<String>("search") {
102                let comma_sep = queries.map(|s| s.as_str()).collect::<Vec<_>>().join(", ");
103                println!("Searching Locally for {comma_sep}...");
104            } else {
105                println!("Displaying all locally installed packages...");
106            }
107        }
108        _ => unreachable!(), // If all subcommands are defined above, anything else is unreachable
109    }
110}
pacman/pacman.rs

pacman/
pacman.rs
