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main.rs
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use clap::{
builder::styling::{AnsiColor, Effects, Styles},
Arg, ColorChoice, Command,
};
use git2::Repository;
use regex::Regex;
use std::{collections::BTreeSet, env, process};
const SEMVER_RX: &str = r"(?P<major>0|[1-9]\d*)\.(?P<minor>0|[1-9]\d*)\.(?P<patch>0|[1-9]\d*)";
fn main() {
let styles = Styles::styled()
.header(AnsiColor::Yellow.on_default() | Effects::BOLD)
.usage(AnsiColor::Green.on_default() | Effects::BOLD)
.literal(AnsiColor::Blue.on_default() | Effects::BOLD)
.placeholder(AnsiColor::Green.on_default());
// cli options default to patch
let matches = Command::new("gbump")
.version(env!("CARGO_PKG_VERSION"))
.color(ColorChoice::Auto)
.styles(styles)
.arg(
Arg::new("bump")
.default_value("patch")
.value_parser(["major", "minor", "patch"])
.num_args(1),
)
.arg(
Arg::new("quiet")
.long("quiet")
.short('q')
.help("Prints only the next SemVer not the current one")
.num_args(0),
)
.arg(
Arg::new("tag")
.long("tag")
.short('t')
.help("Create a semver git tag")
.num_args(0),
)
.get_matches();
// check if we are in a git repository
let repo = match env::current_dir() {
Ok(path) => Repository::discover(path).map_or_else(
|_| {
eprintln!("Not in a git repository");
process::exit(1);
},
|repo| repo,
),
Err(e) => {
eprintln!("Could not get current_dir: {:?}", e);
process::exit(1);
}
};
// find maximum/latest semver
let (major, minor, patch) = tags(&repo).map_or_else(
|_| {
eprintln!("Could not get tags from repo: git tag -l");
process::exit(1);
},
|tags| semver(&tags),
);
// prepare the output
let mut semver = String::new();
if !matches.get_one::<bool>("quiet").copied().unwrap_or(false) {
semver.push_str(format!("{}.{}.{} --> ", major, minor, patch).as_str());
};
let bump = bump(
matches.get_one::<String>("bump").unwrap(),
major,
minor,
patch,
);
semver.push_str(&bump);
println!("{}", semver);
if matches.get_one::<bool>("tag").copied().unwrap_or(false) {
match tag(&repo, bump.as_str(), bump.as_str()) {
Ok(n) => println!("Tag: {} created: {}", bump, n),
Err(e) => {
eprintln!("Could not create tag: {}", e);
process::exit(1);
}
}
}
}
// create a tag: git tag -a bump -m bump
fn tag(repo: &Repository, tag: &str, message: &str) -> Result<git2::Oid, git2::Error> {
let obj = repo.revparse_single("HEAD")?;
let sig = repo.signature()?;
repo.tag(tag, &obj, &sig, message, false)
}
// return string containing new semver and optional the current semver
fn bump(version: &str, major: usize, minor: usize, patch: usize) -> String {
match version {
"major" => format!("{}.{}.{}", major + 1, 0, 0),
"minor" => format!("{}.{}.{}", major, minor + 1, 0),
"patch" => format!("{}.{}.{}", major, minor, patch + 1),
_ => String::new(),
}
}
// return tags found in the repository
fn tags(repo: &Repository) -> Result<BTreeSet<String>, git2::Error> {
let mut tags = BTreeSet::new();
for tag in repo.tag_names(None)?.iter().flatten() {
tags.insert(tag.to_string());
}
Ok(tags)
}
// return current "max" semver
fn semver(tags: &BTreeSet<String>) -> (usize, usize, usize) {
let re = Regex::new(SEMVER_RX).unwrap();
let (mut major, mut minor, mut patch) = (0, 0, 0);
for tag in tags {
if let Some(caps) = re.captures(tag) {
let x = caps["major"].parse::<usize>().unwrap();
let y = caps["minor"].parse::<usize>().unwrap();
let z = caps["patch"].parse::<usize>().unwrap();
if x > major {
major = x;
minor = y;
patch = z;
} else if x == major && y > minor {
minor = y;
patch = z;
} else if x == major && y == minor && z > patch {
patch = z;
}
}
}
(major, minor, patch)
}
#[cfg(test)]
mod tests {
use crate::{bump, semver};
use std::collections::BTreeSet;
#[test]
fn test_semver_major() {
let mut tags = BTreeSet::<String>::new();
tags.insert("0.1.2".to_string());
tags.insert("3.7.0".to_string());
tags.insert("1.17.1".to_string());
tags.insert("2.7.2".to_string());
tags.insert("0.24.0".to_string());
let (major, minor, patch) = semver(&tags);
assert_eq!(major, 3);
assert_eq!(minor, 7);
assert_eq!(patch, 0);
}
#[test]
fn test_semver_minor() {
let mut tags = BTreeSet::<String>::new();
tags.insert("0.1.2".to_string());
tags.insert("0.7.0".to_string());
tags.insert("0.7.1".to_string());
tags.insert("0.7.2".to_string());
tags.insert("0.2.2".to_string());
tags.insert("0.9.0".to_string());
tags.insert("0.8.3".to_string());
tags.insert("0.23.0".to_string());
tags.insert("0.24.0".to_string());
let (major, minor, patch) = semver(&tags);
assert_eq!(major, 0);
assert_eq!(minor, 24);
assert_eq!(patch, 0);
}
#[test]
fn test_semver_patch() {
let mut tags = BTreeSet::<String>::new();
tags.insert("0.1.2".to_string());
tags.insert("0.7.0".to_string());
tags.insert("0.7.1".to_string());
tags.insert("0.7.2".to_string());
tags.insert("0.2.2".to_string());
tags.insert("0.9.0".to_string());
tags.insert("0.8.3".to_string());
tags.insert("0.23.0".to_string());
tags.insert("0.24.0".to_string());
tags.insert("0.99.100".to_string());
let (major, minor, patch) = semver(&tags);
assert_eq!(major, 0);
assert_eq!(minor, 99);
assert_eq!(patch, 100);
}
#[test]
// https://regex101.com/r/ahzkLW/1/
fn test_semver_regex() {
let mut tags = BTreeSet::<String>::new();
tags.insert("1.2.3".to_string());
tags.insert("10.20.30".to_string());
tags.insert("1.1.2-prerelease+meta".to_string());
tags.insert("1.1.2+meta".to_string());
tags.insert("1.1.2+meta-valid".to_string());
tags.insert("1.0.0-alpha".to_string());
tags.insert("1.0.0-beta".to_string());
tags.insert("1.0.0-alpha.beta".to_string());
tags.insert("1.0.0-alpha.beta.1".to_string());
tags.insert("1.0.0-alpha.1".to_string());
tags.insert("1.0.0-alpha0.valid".to_string());
tags.insert("1.0.0-alpha.0valid".to_string());
tags.insert("1.0.0-alpha-a.b-c-somethinglong+build.1-aef.1-its-okay".to_string());
tags.insert("1.0.0-rc.1+build.1".to_string());
tags.insert("2.0.0-rc.1+build.123".to_string());
tags.insert("1.2.3-beta".to_string());
tags.insert("10.2.3-DEV-SNAPSHOT".to_string());
tags.insert("1.2.3-SNAPSHOT-123".to_string());
tags.insert("1.0.0".to_string());
tags.insert("2.0.0".to_string());
tags.insert("1.1.7".to_string());
tags.insert("2.0.0+build.1848".to_string());
tags.insert("2.0.1-alpha.1227".to_string());
tags.insert("1.0.0-alpha+beta".to_string());
tags.insert("1.2.3----RC-SNAPSHOT.12.9.1--.12+788".to_string());
tags.insert("1.2.3----R-S.12.9.1--.12+meta".to_string());
tags.insert("1.2.3----RC-SNAPSHOT.12.9.1--.12".to_string());
tags.insert("1.0.0+0.build.1-rc.10000aaa-kk-0.1".to_string());
tags.insert("0.999999999999999999.99999999999999999".to_string());
tags.insert("1.0.0-0A.is.legal".to_string());
tags.insert("v1.1.1".to_string());
tags.insert("1.1.1".to_string());
tags.insert("0.0.0".to_string());
tags.insert("v0.0.3".to_string());
tags.insert("0.0.0".to_string());
tags.insert("1.1.1 1.1".to_string());
tags.insert("12.1.0---FreeBSD.12.1-RELEASE".to_string());
let (major, minor, patch) = semver(&tags);
assert_eq!(major, 12);
assert_eq!(minor, 1);
assert_eq!(patch, 0);
}
#[test]
fn test_bump() {
assert_eq!(bump("patch", 0, 0, 0), "0.0.1");
assert_eq!(bump("minor", 0, 0, 0), "0.1.0");
assert_eq!(bump("major", 0, 0, 0), "1.0.0");
assert_eq!(bump("patch", 1, 2, 3), "1.2.4");
assert_eq!(bump("minor", 1, 2, 3), "1.3.0");
assert_eq!(bump("major", 1, 2, 3), "2.0.0");
}
#[test]
fn test_bump_invalid() {
assert_eq!(bump("foo", 0, 0, 0), "");
}
}