2022-05-23 15:50:11 +00:00
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use std::path::PathBuf;
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2022-08-01 14:02:52 +00:00
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use clap::error::ErrorKind;
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use clap::{arg, command, value_parser, ArgAction};
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2015-04-28 03:15:32 +00:00
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fn main() {
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// Create application like normal
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2022-07-19 18:29:31 +00:00
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let mut cmd = command!() // requires `cargo` feature
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2018-11-14 17:05:06 +00:00
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// Add the version arguments
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2022-09-12 21:59:57 +00:00
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.arg(arg!(--"set-ver" <VER> "set version manually"))
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2022-06-10 01:03:28 +00:00
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.arg(arg!(--major "auto inc major").action(ArgAction::SetTrue))
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.arg(arg!(--minor "auto inc minor").action(ArgAction::SetTrue))
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.arg(arg!(--patch "auto inc patch").action(ArgAction::SetTrue))
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2018-11-14 17:05:06 +00:00
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// Arguments can also be added to a group individually, these two arguments
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// are part of the "input" group which is not required
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2022-05-23 15:50:11 +00:00
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.arg(arg!([INPUT_FILE] "some regular input").value_parser(value_parser!(PathBuf)))
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.arg(
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arg!(--"spec-in" <SPEC_IN> "some special input argument")
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.value_parser(value_parser!(PathBuf)),
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)
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2018-11-14 17:05:06 +00:00
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// Now let's assume we have a -c [config] argument which requires one of
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// (but **not** both) the "input" arguments
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2022-09-12 21:59:57 +00:00
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.arg(arg!(config: -c <CONFIG>).value_parser(value_parser!(PathBuf)));
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2022-02-14 21:47:20 +00:00
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let matches = cmd.get_matches_mut();
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2015-04-28 03:15:32 +00:00
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// Let's assume the old version 1.2.3
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let mut major = 1;
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let mut minor = 2;
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let mut patch = 3;
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// See if --set-ver was used to set the version manually
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2022-05-25 15:46:42 +00:00
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let version = if let Some(ver) = matches.get_one::<String>("set-ver") {
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2022-09-02 00:40:56 +00:00
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if matches.get_flag("major") || matches.get_flag("minor") || matches.get_flag("patch") {
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2022-02-14 21:47:20 +00:00
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cmd.error(
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2021-11-30 18:30:19 +00:00
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ErrorKind::ArgumentConflict,
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"Can't do relative and absolute version change",
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)
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.exit();
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}
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2019-10-02 13:27:19 +00:00
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ver.to_string()
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2015-04-28 03:15:32 +00:00
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} else {
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// Increment the one requested (in a real program, we'd reset the lower numbers)
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2018-01-25 04:05:05 +00:00
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let (maj, min, pat) = (
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2022-09-02 00:40:56 +00:00
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matches.get_flag("major"),
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matches.get_flag("minor"),
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matches.get_flag("patch"),
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2018-01-25 04:05:05 +00:00
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);
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2015-04-28 03:15:32 +00:00
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match (maj, min, pat) {
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2021-11-30 18:30:19 +00:00
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(true, false, false) => major += 1,
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(false, true, false) => minor += 1,
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(false, false, true) => patch += 1,
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_ => {
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2022-02-14 21:47:20 +00:00
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cmd.error(
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2021-11-30 18:30:19 +00:00
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ErrorKind::ArgumentConflict,
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2022-03-02 05:19:14 +00:00
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"Can only modify one version field",
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2021-11-30 18:30:19 +00:00
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)
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.exit();
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}
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2015-04-28 03:15:32 +00:00
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};
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format!("{}.{}.{}", major, minor, patch)
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};
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println!("Version: {}", version);
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// Check for usage of -c
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2022-06-10 01:03:28 +00:00
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if matches.contains_id("config") {
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2018-01-25 04:05:05 +00:00
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let input = matches
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2022-05-23 15:50:11 +00:00
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.get_one::<PathBuf>("INPUT_FILE")
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2022-05-25 15:46:42 +00:00
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.or_else(|| matches.get_one::<PathBuf>("spec-in"))
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2021-11-30 18:30:19 +00:00
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.unwrap_or_else(|| {
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2022-02-14 21:47:20 +00:00
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cmd.error(
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2021-11-30 18:30:19 +00:00
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ErrorKind::MissingRequiredArgument,
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"INPUT_FILE or --spec-in is required when using --config",
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)
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.exit()
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2022-05-23 15:50:11 +00:00
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})
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.display();
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2018-01-25 04:05:05 +00:00
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println!(
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"Doing work using input {} and config {}",
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input,
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2022-05-25 15:46:42 +00:00
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matches.get_one::<PathBuf>("config").unwrap().display()
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2018-01-25 04:05:05 +00:00
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);
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2015-04-28 03:15:32 +00:00
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}
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2016-01-27 22:22:34 +00:00
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}
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