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|
use std::fmt::Write;
use std::{env, iter};
use anyhow::bail;
use xshell::{cmd, Shell};
pub(crate) fn get_changelog(
sh: &Shell,
changelog_n: usize,
commit: &str,
prev_tag: &str,
today: &str,
) -> anyhow::Result<String> {
let token = match env::var("GITHUB_TOKEN") {
Ok(token) => token,
Err(_) => bail!("Please obtain a personal access token from https://github.com/settings/tokens and set the `GITHUB_TOKEN` environment variable."),
};
let git_log = cmd!(sh, "git log {prev_tag}..HEAD --reverse").read()?;
let mut features = String::new();
let mut fixes = String::new();
let mut internal = String::new();
let mut others = String::new();
for line in git_log.lines() {
let line = line.trim_start();
if let Some(pr_num) = parse_pr_number(line) {
let accept = "Accept: application/vnd.github.v3+json";
let authorization = format!("Authorization: token {token}");
let pr_url = "https://api.github.com/repos/rust-lang/rust-analyzer/issues";
// we don't use an HTTPS client or JSON parser to keep the build times low
let pr = pr_num.to_string();
let pr_json =
cmd!(sh, "curl -s -H {accept} -H {authorization} {pr_url}/{pr}").read()?;
let pr_title = cmd!(sh, "jq .title").stdin(&pr_json).read()?;
let pr_title = unescape(&pr_title[1..pr_title.len() - 1]);
let pr_comment = cmd!(sh, "jq .body").stdin(pr_json).read()?;
let comments_json =
cmd!(sh, "curl -s -H {accept} -H {authorization} {pr_url}/{pr}/comments").read()?;
let pr_comments = cmd!(sh, "jq .[].body").stdin(comments_json).read()?;
let l = iter::once(pr_comment.as_str())
.chain(pr_comments.lines())
.rev()
.find_map(|it| {
let it = unescape(&it[1..it.len() - 1]);
it.lines().find_map(parse_changelog_line)
})
.into_iter()
.next()
.unwrap_or_else(|| parse_title_line(&pr_title));
let s = match l.kind {
PrKind::Feature => &mut features,
PrKind::Fix => &mut fixes,
PrKind::Internal => &mut internal,
PrKind::Other => &mut others,
PrKind::Skip => continue,
};
writeln!(s, "* pr:{pr_num}[] {}", l.message.as_deref().unwrap_or(&pr_title)).unwrap();
}
}
let contents = format!(
"\
= Changelog #{changelog_n}
:sectanchors:
:experimental:
:page-layout: post
Commit: commit:{commit}[] +
Release: release:{today}[] (`TBD`)
== New Features
{features}
== Fixes
{fixes}
== Internal Improvements
{internal}
== Others
{others}
"
);
Ok(contents)
}
#[derive(Clone, Copy)]
enum PrKind {
Feature,
Fix,
Internal,
Other,
Skip,
}
struct PrInfo {
message: Option<String>,
kind: PrKind,
}
fn unescape(s: &str) -> String {
s.replace(r#"\""#, "").replace(r#"\n"#, "\n").replace(r#"\r"#, "")
}
fn parse_pr_number(s: &str) -> Option<u32> {
const BORS_PREFIX: &str = "Merge #";
const HOMU_PREFIX: &str = "Auto merge of #";
if let Some(s) = s.strip_prefix(BORS_PREFIX) {
s.parse().ok()
} else if let Some(s) = s.strip_prefix(HOMU_PREFIX) {
if let Some(space) = s.find(' ') {
s[..space].parse().ok()
} else {
None
}
} else {
None
}
}
fn parse_changelog_line(s: &str) -> Option<PrInfo> {
let parts = s.splitn(3, ' ').collect::<Vec<_>>();
if parts.len() < 2 || parts[0] != "changelog" {
return None;
}
let message = parts.get(2).map(|it| it.to_string());
let kind = match parts[1].trim_end_matches(':') {
"feature" => PrKind::Feature,
"fix" => PrKind::Fix,
"internal" => PrKind::Internal,
"skip" => PrKind::Skip,
_ => {
let kind = PrKind::Other;
let message = format!("{} {}", parts[1], message.unwrap_or_default());
return Some(PrInfo { kind, message: Some(message) });
}
};
let res = PrInfo { message, kind };
Some(res)
}
fn parse_title_line(s: &str) -> PrInfo {
let lower = s.to_ascii_lowercase();
const PREFIXES: [(&str, PrKind); 5] = [
("feat: ", PrKind::Feature),
("feature: ", PrKind::Feature),
("fix: ", PrKind::Fix),
("internal: ", PrKind::Internal),
("minor: ", PrKind::Skip),
];
for (prefix, kind) in PREFIXES {
if lower.starts_with(prefix) {
let message = match &kind {
PrKind::Skip => None,
_ => Some(s[prefix.len()..].to_string()),
};
return PrInfo { message, kind };
}
}
PrInfo { kind: PrKind::Other, message: Some(s.to_string()) }
}
|
