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Auto merge of #10178 - ehuss:version-from-rustc, r=alexcrichton
Sync cargo-the-cli version with rustc. People occasionally get confused when cargo's version does not match the version of rustc. This happens in a variety of scenarios: * Point releases. * Beta releases (cargo is missing the .1 .2, etc.) * Nightly releases when cargo's version has not yet been bumped. This changes it so that cargo-the-cli will always report the same version as rustc (assuming they were built with rustbuild). The git information remains the same (reports cargo's last commit sha). Closes #10122
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| //! Code for representing cargo's release version number. | ||
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| use std::fmt; | ||
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| /// Information about the git repository where cargo was built from. | ||
| pub struct CommitInfo { | ||
| pub short_commit_hash: String, | ||
| pub commit_hash: String, | ||
| pub commit_date: String, | ||
| } | ||
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| /// Information provided by the outer build system (rustbuild aka bootstrap). | ||
| pub struct CfgInfo { | ||
| /// Information about the Git repository we may have been built from. | ||
| pub commit_info: Option<CommitInfo>, | ||
| /// The release channel we were built for (stable/beta/nightly/dev). | ||
| pub release_channel: String, | ||
| } | ||
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| /// Cargo's version. | ||
| pub struct VersionInfo { | ||
| /// Cargo's version, such as "1.57.0", "1.58.0-beta.1", "1.59.0-nightly", etc. | ||
| pub version: String, | ||
| /// Information that's only available when we were built with | ||
| /// rustbuild, rather than Cargo itself. | ||
| pub cfg_info: Option<CfgInfo>, | ||
| } | ||
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| impl fmt::Display for VersionInfo { | ||
| fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { | ||
| write!(f, "{}", self.version)?; | ||
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| if let Some(ref cfg) = self.cfg_info { | ||
| if let Some(ref ci) = cfg.commit_info { | ||
| write!(f, " ({} {})", ci.short_commit_hash, ci.commit_date)?; | ||
| } | ||
| }; | ||
| Ok(()) | ||
| } | ||
| } | ||
|
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| /// Returns information about cargo's version. | ||
| pub fn version() -> VersionInfo { | ||
| macro_rules! option_env_str { | ||
| ($name:expr) => { | ||
| option_env!($name).map(|s| s.to_string()) | ||
| }; | ||
| } | ||
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| // This is the version set in rustbuild, which we use to match rustc. | ||
| let version = option_env_str!("CFG_RELEASE").unwrap_or_else(|| { | ||
| // If cargo is not being built by rustbuild, then we just use the | ||
| // version from cargo's own `Cargo.toml`. | ||
| // | ||
| // There are two versions at play here: | ||
| // - version of cargo-the-binary, which you see when you type `cargo --version` | ||
| // - version of cargo-the-library, which you download from crates.io for use | ||
| // in your packages. | ||
| // | ||
| // The library is permanently unstable, so it always has a 0 major | ||
| // version. However, the CLI now reports a stable 1.x version | ||
| // (starting in 1.26) which stays in sync with rustc's version. | ||
| // | ||
| // Coincidentally, the minor version for cargo-the-library is always | ||
| // +1 of rustc's minor version (that is, `rustc 1.11.0` corresponds to | ||
| // `cargo `0.12.0`). The versions always get bumped in lockstep, so | ||
| // this should continue to hold. | ||
| let minor = env!("CARGO_PKG_VERSION_MINOR").parse::<u8>().unwrap() - 1; | ||
| let patch = env!("CARGO_PKG_VERSION_PATCH").parse::<u8>().unwrap(); | ||
| format!("1.{}.{}", minor, patch) | ||
| }); | ||
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| match option_env!("CFG_RELEASE_CHANNEL") { | ||
| // We have environment variables set up from configure/make. | ||
| Some(_) => { | ||
| let commit_info = option_env!("CFG_COMMIT_HASH").map(|s| CommitInfo { | ||
| commit_hash: s.to_string(), | ||
| short_commit_hash: option_env_str!("CFG_SHORT_COMMIT_HASH").unwrap(), | ||
| commit_date: option_env_str!("CFG_COMMIT_DATE").unwrap(), | ||
| }); | ||
| VersionInfo { | ||
| version, | ||
| cfg_info: Some(CfgInfo { | ||
| release_channel: option_env_str!("CFG_RELEASE_CHANNEL").unwrap(), | ||
| commit_info, | ||
| }), | ||
| } | ||
| } | ||
| // We are being compiled by Cargo itself. | ||
| None => VersionInfo { | ||
| version, | ||
| cfg_info: None, | ||
| }, | ||
| } | ||
| } |