diff options
Diffstat (limited to 'rustc_version')
| -rw-r--r-- | rustc_version/.gitignore | 2 | ||||
| -rw-r--r-- | rustc_version/.travis.yml | 21 | ||||
| -rw-r--r-- | rustc_version/Cargo.toml | 18 | ||||
| -rw-r--r-- | rustc_version/LICENSE-APACHE | 201 | ||||
| -rw-r--r-- | rustc_version/LICENSE-MIT | 25 | ||||
| -rw-r--r-- | rustc_version/README.md | 75 | ||||
| -rw-r--r-- | rustc_version/src/errors.rs | 79 | ||||
| -rw-r--r-- | rustc_version/src/lib.rs | 347 |
8 files changed, 768 insertions, 0 deletions
diff --git a/rustc_version/.gitignore b/rustc_version/.gitignore new file mode 100644 index 0000000..a9d37c5 --- /dev/null +++ b/rustc_version/.gitignore @@ -0,0 +1,2 @@ +target +Cargo.lock diff --git a/rustc_version/.travis.yml b/rustc_version/.travis.yml new file mode 100644 index 0000000..ccb8411 --- /dev/null +++ b/rustc_version/.travis.yml @@ -0,0 +1,21 @@ +language: rust +rust: +- nightly +- beta +- stable +before_script: +- | + pip install 'travis-cargo<0.2' --user && + export PATH=$HOME/.local/bin:$PATH +script: +- | + travis-cargo build && + travis-cargo test && + travis-cargo bench && + travis-cargo --only stable doc +after_success: +- travis-cargo --only stable doc-upload +env: + global: + - TRAVIS_CARGO_NIGHTLY_FEATURE="" + - secure: 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 diff --git a/rustc_version/Cargo.toml b/rustc_version/Cargo.toml new file mode 100644 index 0000000..422a881 --- /dev/null +++ b/rustc_version/Cargo.toml @@ -0,0 +1,18 @@ +[package] +name = "rustc_version" +version = "0.2.3" +authors = ["Marvin Löbel <loebel.marvin@gmail.com>"] +license = "MIT/Apache-2.0" + +description = "A library for querying the version of a installed rustc compiler" +readme = "README.md" +documentation = "https://docs.rs/rustc_version/" + +repository = "https://github.com/Kimundi/rustc-version-rs" +keywords = ["version", "rustc"] + +[badges] +travis-ci = { repository = "Kimundi/rustc-version-rs" } + +[dependencies] +semver = "0.9" diff --git a/rustc_version/LICENSE-APACHE b/rustc_version/LICENSE-APACHE new file mode 100644 index 0000000..16fe87b --- /dev/null +++ b/rustc_version/LICENSE-APACHE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + +TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + +1. 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IN NO EVENT +SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR +IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +DEALINGS IN THE SOFTWARE. diff --git a/rustc_version/README.md b/rustc_version/README.md new file mode 100644 index 0000000..f491ca9 --- /dev/null +++ b/rustc_version/README.md @@ -0,0 +1,75 @@ +rustc-version-rs +============== + +A library for querying the version of a `rustc` compiler. + +This can be used by build scripts or other tools dealing with Rust sources +to make decisions based on the version of the compiler. + +[](https://travis-ci.org/Kimundi/rustc-version-rs) + +# Getting Started + +[rustc-version-rs is available on crates.io](https://crates.io/crates/rustc_version). +It is recommended to look there for the newest released version, as well as links to the newest builds of the docs. + +At the point of the last update of this README, the latest published version could be used like this: + +Add the following dependency to your Cargo manifest... + +```toml +[build-dependencies] +rustc_version = "0.2" +``` + +...and see the [docs](http://kimundi.github.io/rustc-version-rs/rustc_version/index.html) for how to use it. + +# Example + +```rust +// This could be a cargo build script + +extern crate rustc_version; +use rustc_version::{version, version_meta, Channel, Version}; + +fn main() { + // Assert we haven't travelled back in time + assert!(version().unwrap().major >= 1); + + // Set cfg flags depending on release channel + match version_meta().unwrap().channel { + Channel::Stable => { + println!("cargo:rustc-cfg=RUSTC_IS_STABLE"); + } + Channel::Beta => { + println!("cargo:rustc-cfg=RUSTC_IS_BETA"); + } + Channel::Nightly => { + println!("cargo:rustc-cfg=RUSTC_IS_NIGHTLY"); + } + Channel::Dev => { + println!("cargo:rustc-cfg=RUSTC_IS_DEV"); + } + } + + // Check for a minimum version + if version().unwrap() >= Version::parse("1.4.0").unwrap() { + println!("cargo:rustc-cfg=compiler_has_important_bugfix"); + } +} +``` + +## License + +Licensed under either of + + * Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0) + * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT) + +at your option. + +### Contribution + +Unless you explicitly state otherwise, any contribution intentionally submitted +for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any +additional terms or conditions. diff --git a/rustc_version/src/errors.rs b/rustc_version/src/errors.rs new file mode 100644 index 0000000..54557b6 --- /dev/null +++ b/rustc_version/src/errors.rs @@ -0,0 +1,79 @@ +use std::{self, error, fmt, io, str}; +use semver::{self, Identifier}; + +/// The error type for this crate. +#[derive(Debug)] +pub enum Error { + /// An error ocurrend when executing the `rustc` command. + CouldNotExecuteCommand(io::Error), + /// The output of `rustc -vV` was not valid utf-8. + Utf8Error(str::Utf8Error), + /// The output of `rustc -vV` was not in the expected format. + UnexpectedVersionFormat, + /// An error ocurred in parsing a `VersionReq`. + ReqParseError(semver::ReqParseError), + /// An error ocurred in parsing the semver. + SemVerError(semver::SemVerError), + /// The pre-release tag is unknown. + UnknownPreReleaseTag(Identifier), +} +use Error::*; + +impl fmt::Display for Error { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + use std::error::Error; + match *self { + CouldNotExecuteCommand(ref e) => write!(f, "{}: {}", self.description(), e), + Utf8Error(_) => write!(f, "{}", self.description()), + UnexpectedVersionFormat => write!(f, "{}", self.description()), + ReqParseError(ref e) => write!(f, "{}: {}", self.description(), e), + SemVerError(ref e) => write!(f, "{}: {}", self.description(), e), + UnknownPreReleaseTag(ref i) => write!(f, "{}: {}", self.description(), i), + } + } +} + +impl error::Error for Error { + fn cause(&self) -> Option<&error::Error> { + match *self { + CouldNotExecuteCommand(ref e) => Some(e), + Utf8Error(ref e) => Some(e), + UnexpectedVersionFormat => None, + ReqParseError(ref e) => Some(e), + SemVerError(ref e) => Some(e), + UnknownPreReleaseTag(_) => None, + } + } + + fn description(&self) -> &str { + match *self { + CouldNotExecuteCommand(_) => "could not execute command", + Utf8Error(_) => "invalid UTF-8 output from `rustc -vV`", + UnexpectedVersionFormat => "unexpected `rustc -vV` format", + ReqParseError(_) => "error parsing version requirement", + SemVerError(_) => "error parsing version", + UnknownPreReleaseTag(_) => "unknown pre-release tag", + } + } +} + +macro_rules! impl_from { + ($($err_ty:ty => $variant:ident),* $(,)*) => { + $( + impl From<$err_ty> for Error { + fn from(e: $err_ty) -> Error { + Error::$variant(e) + } + } + )* + } +} + +impl_from! { + str::Utf8Error => Utf8Error, + semver::SemVerError => SemVerError, + semver::ReqParseError => ReqParseError, +} + +/// The result type for this crate. +pub type Result<T> = std::result::Result<T, Error>; diff --git a/rustc_version/src/lib.rs b/rustc_version/src/lib.rs new file mode 100644 index 0000000..c038288 --- /dev/null +++ b/rustc_version/src/lib.rs @@ -0,0 +1,347 @@ +// Copyright 2016 rustc-version-rs developers +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +#![warn(missing_docs)] + +//! Simple library for getting the version information of a `rustc` +//! compiler. +//! +//! This can be used by build scripts or other tools dealing with Rust sources +//! to make decisions based on the version of the compiler. +//! +//! It calls `$RUSTC --version -v` and parses the output, falling +//! back to `rustc` if `$RUSTC` is not set. +//! +//! # Example +//! +//! ```rust +//! // This could be a cargo build script +//! +//! extern crate rustc_version; +//! use rustc_version::{version, version_meta, Channel, Version}; +//! +//! fn main() { +//! // Assert we haven't travelled back in time +//! assert!(version().unwrap().major >= 1); +//! +//! // Set cfg flags depending on release channel +//! match version_meta().unwrap().channel { +//! Channel::Stable => { +//! println!("cargo:rustc-cfg=RUSTC_IS_STABLE"); +//! } +//! Channel::Beta => { +//! println!("cargo:rustc-cfg=RUSTC_IS_BETA"); +//! } +//! Channel::Nightly => { +//! println!("cargo:rustc-cfg=RUSTC_IS_NIGHTLY"); +//! } +//! Channel::Dev => { +//! println!("cargo:rustc-cfg=RUSTC_IS_DEV"); +//! } +//! } +//! +//! // Check for a minimum version +//! if version().unwrap() >= Version::parse("1.4.0").unwrap() { +//! println!("cargo:rustc-cfg=compiler_has_important_bugfix"); +//! } +//! } +//! ``` + +extern crate semver; +use semver::Identifier; +use std::process::Command; +use std::{env, str}; +use std::ffi::OsString; + +// Convenience re-export to allow version comparison without needing to add +// semver crate. +pub use semver::Version; + +mod errors; +pub use errors::{Error, Result}; + +/// Release channel of the compiler. +#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug)] +pub enum Channel { + /// Development release channel + Dev, + /// Nightly release channel + Nightly, + /// Beta release channel + Beta, + /// Stable release channel + Stable, +} + +/// Rustc version plus metada like git short hash and build date. +#[derive(Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)] +pub struct VersionMeta { + /// Version of the compiler + pub semver: Version, + + /// Git short hash of the build of the compiler + pub commit_hash: Option<String>, + + /// Commit date of the compiler + pub commit_date: Option<String>, + + /// Build date of the compiler; this was removed between Rust 1.0.0 and 1.1.0. + pub build_date: Option<String>, + + /// Release channel of the compiler + pub channel: Channel, + + /// Host target triple of the compiler + pub host: String, + + /// Short version string of the compiler + pub short_version_string: String, +} + +impl VersionMeta { + /// Returns the version metadata for `cmd`, which should be a `rustc` command. + pub fn for_command(cmd: Command) -> Result<VersionMeta> { + let mut cmd = cmd; + + let out = cmd.arg("-vV").output().map_err(Error::CouldNotExecuteCommand)?; + let out = str::from_utf8(&out.stdout)?; + + version_meta_for(out) + } +} + +/// Returns the `rustc` SemVer version. +pub fn version() -> Result<Version> { + Ok(version_meta()?.semver) +} + +/// Returns the `rustc` SemVer version and additional metadata +/// like the git short hash and build date. +pub fn version_meta() -> Result<VersionMeta> { + let cmd = env::var_os("RUSTC").unwrap_or_else(|| OsString::from("rustc")); + + VersionMeta::for_command(Command::new(cmd)) +} + +/// Parses a "rustc -vV" output string and returns +/// the SemVer version and additional metadata +/// like the git short hash and build date. +pub fn version_meta_for(verbose_version_string: &str) -> Result<VersionMeta> { + let out: Vec<_> = verbose_version_string.lines().collect(); + + if !(out.len() >= 6 && out.len() <= 8) { + return Err(Error::UnexpectedVersionFormat); + } + + let short_version_string = out[0]; + + fn expect_prefix<'a>(line: &'a str, prefix: &str) -> Result<&'a str> { + if line.starts_with(prefix) { + Ok(&line[prefix.len()..]) + } else { + Err(Error::UnexpectedVersionFormat) + } + } + + let commit_hash = match expect_prefix(out[2], "commit-hash: ")? { + "unknown" => None, + hash => Some(hash.to_owned()), + }; + + let commit_date = match expect_prefix(out[3], "commit-date: ")? { + "unknown" => None, + hash => Some(hash.to_owned()), + }; + + // Handle that the build date may or may not be present. + let mut idx = 4; + let mut build_date = None; + if out[idx].starts_with("build-date") { + build_date = match expect_prefix(out[idx], "build-date: ")? { + "unknown" => None, + s => Some(s.to_owned()), + }; + idx += 1; + } + + let host = expect_prefix(out[idx], "host: ")?; + idx += 1; + let release = expect_prefix(out[idx], "release: ")?; + + let semver: Version = release.parse()?; + + let channel = if semver.pre.is_empty() { + Channel::Stable + } else { + match semver.pre[0] { + Identifier::AlphaNumeric(ref s) if s == "dev" => Channel::Dev, + Identifier::AlphaNumeric(ref s) if s == "beta" => Channel::Beta, + Identifier::AlphaNumeric(ref s) if s == "nightly" => Channel::Nightly, + ref x => return Err(Error::UnknownPreReleaseTag(x.clone())), + } + }; + + Ok(VersionMeta { + semver: semver, + commit_hash: commit_hash, + commit_date: commit_date, + build_date: build_date, + channel: channel, + host: host.into(), + short_version_string: short_version_string.into(), + }) +} + +#[test] +fn smoketest() { + let v = version().unwrap(); + assert!(v.major >= 1); + + let v = version_meta().unwrap(); + assert!(v.semver.major >= 1); + + assert!(version().unwrap() >= Version::parse("1.0.0").unwrap()); +} + +#[test] +fn parse_unexpected() { + let res = version_meta_for( +"rustc 1.0.0 (a59de37e9 2015-05-13) (built 2015-05-14) +binary: rustc +commit-hash: a59de37e99060162a2674e3ff45409ac73595c0e +commit-date: 2015-05-13 +rust-birthday: 2015-05-14 +host: x86_64-unknown-linux-gnu +release: 1.0.0"); + + assert!(match res { + Err(Error::UnexpectedVersionFormat) => true, + _ => false, + }); + +} + +#[test] +fn parse_1_0_0() { + let version = version_meta_for( +"rustc 1.0.0 (a59de37e9 2015-05-13) (built 2015-05-14) +binary: rustc +commit-hash: a59de37e99060162a2674e3ff45409ac73595c0e +commit-date: 2015-05-13 +build-date: 2015-05-14 +host: x86_64-unknown-linux-gnu +release: 1.0.0").unwrap(); + + assert_eq!(version.semver, Version::parse("1.0.0").unwrap()); + assert_eq!(version.commit_hash, Some("a59de37e99060162a2674e3ff45409ac73595c0e".into())); + assert_eq!(version.commit_date, Some("2015-05-13".into())); + assert_eq!(version.build_date, Some("2015-05-14".into())); + assert_eq!(version.channel, Channel::Stable); + assert_eq!(version.host, "x86_64-unknown-linux-gnu"); + assert_eq!(version.short_version_string, "rustc 1.0.0 (a59de37e9 2015-05-13) (built 2015-05-14)"); +} + + +#[test] +fn parse_unknown() { + let version = version_meta_for( +"rustc 1.3.0 +binary: rustc +commit-hash: unknown +commit-date: unknown +host: x86_64-unknown-linux-gnu +release: 1.3.0").unwrap(); + + assert_eq!(version.semver, Version::parse("1.3.0").unwrap()); + assert_eq!(version.commit_hash, None); + assert_eq!(version.commit_date, None); + assert_eq!(version.channel, Channel::Stable); + assert_eq!(version.host, "x86_64-unknown-linux-gnu"); + assert_eq!(version.short_version_string, "rustc 1.3.0"); +} + +#[test] +fn parse_nightly() { + let version = version_meta_for( +"rustc 1.5.0-nightly (65d5c0833 2015-09-29) +binary: rustc +commit-hash: 65d5c083377645a115c4ac23a620d3581b9562b6 +commit-date: 2015-09-29 +host: x86_64-unknown-linux-gnu +release: 1.5.0-nightly").unwrap(); + + assert_eq!(version.semver, Version::parse("1.5.0-nightly").unwrap()); + assert_eq!(version.commit_hash, Some("65d5c083377645a115c4ac23a620d3581b9562b6".into())); + assert_eq!(version.commit_date, Some("2015-09-29".into())); + assert_eq!(version.channel, Channel::Nightly); + assert_eq!(version.host, "x86_64-unknown-linux-gnu"); + assert_eq!(version.short_version_string, "rustc 1.5.0-nightly (65d5c0833 2015-09-29)"); +} + +#[test] +fn parse_stable() { + let version = version_meta_for( +"rustc 1.3.0 (9a92aaf19 2015-09-15) +binary: rustc +commit-hash: 9a92aaf19a64603b02b4130fe52958cc12488900 +commit-date: 2015-09-15 +host: x86_64-unknown-linux-gnu +release: 1.3.0").unwrap(); + + assert_eq!(version.semver, Version::parse("1.3.0").unwrap()); + assert_eq!(version.commit_hash, Some("9a92aaf19a64603b02b4130fe52958cc12488900".into())); + assert_eq!(version.commit_date, Some("2015-09-15".into())); + assert_eq!(version.channel, Channel::Stable); + assert_eq!(version.host, "x86_64-unknown-linux-gnu"); + assert_eq!(version.short_version_string, "rustc 1.3.0 (9a92aaf19 2015-09-15)"); +} + +#[test] +fn parse_1_16_0_nightly() { + let version = version_meta_for( +"rustc 1.16.0-nightly (5d994d8b7 2017-01-05) +binary: rustc +commit-hash: 5d994d8b7e482e87467d4a521911477bd8284ce3 +commit-date: 2017-01-05 +host: x86_64-unknown-linux-gnu +release: 1.16.0-nightly +LLVM version: 3.9").unwrap(); + + assert_eq!(version.semver, Version::parse("1.16.0-nightly").unwrap()); + assert_eq!(version.commit_hash, Some("5d994d8b7e482e87467d4a521911477bd8284ce3".into())); + assert_eq!(version.commit_date, Some("2017-01-05".into())); + assert_eq!(version.channel, Channel::Nightly); + assert_eq!(version.host, "x86_64-unknown-linux-gnu"); + assert_eq!(version.short_version_string, "rustc 1.16.0-nightly (5d994d8b7 2017-01-05)"); +} + +/* +#[test] +fn version_matches_replacement() { + let f = |s1: &str, s2: &str| { + let a = Version::parse(s1).unwrap(); + let b = Version::parse(s2).unwrap(); + println!("{} <= {} : {}", s1, s2, a <= b); + }; + + println!(); + + f("1.5.0", "1.5.0"); + f("1.5.0-nightly", "1.5.0"); + f("1.5.0", "1.5.0-nightly"); + f("1.5.0-nightly", "1.5.0-nightly"); + + f("1.5.0", "1.6.0"); + f("1.5.0-nightly", "1.6.0"); + f("1.5.0", "1.6.0-nightly"); + f("1.5.0-nightly", "1.6.0-nightly"); + + panic!(); + +} +*/ |