132 lines
3.3 KiB
Rust
132 lines
3.3 KiB
Rust
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub struct ParsedMcVersion {
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pub major: u32,
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pub minor: Option<u32>,
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pub patch: Option<u32>,
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}
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impl ParsedMcVersion {
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#[must_use]
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pub fn key(&self) -> Option<VersionKey> {
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Some((self.minor?, self.patch))
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}
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}
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pub type VersionKey = (u32, Option<u32>);
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pub fn parse_mc_version(version: &str) -> Option<ParsedMcVersion> {
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let parts: Vec<&str> = version.split('.').collect();
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if parts.first() != Some(&"1") {
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if parts.len() < 2 {
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return None;
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}
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let major = parts[0].parse().ok()?;
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let minor = parts[1].parse().ok()?;
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let patch = match parts.get(2) {
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Some(p) => Some(p.parse().ok()?),
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None => None,
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};
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return Some(ParsedMcVersion {
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major,
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minor: Some(minor),
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patch,
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});
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}
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if parts.len() <= 1 {
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return None;
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}
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let major = parts[1].parse().ok()?;
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let minor = parts.get(2).and_then(|p| p.parse().ok());
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Some(ParsedMcVersion {
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major,
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minor,
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patch: None,
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})
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}
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#[must_use]
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pub fn format_mc_version(major: u32, minor: u32, patch: Option<u32>) -> String {
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let base = if major >= 26 {
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format!("{major}.{minor}")
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} else {
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format!("1.{major}.{minor}")
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};
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match patch {
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Some(patch) => format!("{base}.{patch}"),
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None => base,
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}
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}
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#[must_use]
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pub fn normalize_mc_version_input(version: &str) -> String {
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version.trim().to_string()
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn parse_modern_versions() {
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let v = parse_mc_version("26.1").unwrap();
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assert_eq!(v.major, 26);
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assert_eq!(v.minor, Some(1));
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assert_eq!(v.patch, None);
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let v = parse_mc_version("26.2").unwrap();
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assert_eq!(v.major, 26);
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assert_eq!(v.minor, Some(2));
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assert_eq!(v.patch, None);
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}
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#[test]
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fn parse_modern_patch_versions() {
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let v = parse_mc_version("26.1.2").unwrap();
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assert_eq!(v.major, 26);
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assert_eq!(v.minor, Some(1));
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assert_eq!(v.patch, Some(2));
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}
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#[test]
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fn parse_legacy_versions() {
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let v = parse_mc_version("1.21.5").unwrap();
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assert_eq!(v.major, 21);
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assert_eq!(v.minor, Some(5));
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assert_eq!(v.patch, None);
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}
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#[test]
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fn reject_garbage_patch_component() {
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assert!(parse_mc_version("26.1.x").is_none());
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}
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#[test]
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fn format_versions() {
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assert_eq!(format_mc_version(26, 1, None), "26.1");
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assert_eq!(format_mc_version(26, 1, Some(2)), "26.1.2");
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assert_eq!(format_mc_version(21, 5, None), "1.21.5");
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}
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#[test]
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fn format_round_trips_through_parse() {
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for (major, minor, patch) in [(26, 1, None), (26, 1, Some(2)), (21, 5, None)] {
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let text = format_mc_version(major, minor, patch);
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let parsed = parse_mc_version(&text).unwrap();
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assert_eq!(parsed.major, major);
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assert_eq!(parsed.minor, Some(minor));
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assert_eq!(parsed.patch, patch);
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}
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}
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#[test]
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fn patch_sorts_after_bare_minor() {
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let bare = parse_mc_version("26.1").unwrap().key().unwrap();
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let patched = parse_mc_version("26.1.2").unwrap().key().unwrap();
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assert!(bare < patched);
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}
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}
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