mirror of
https://github.com/simonmichael/hledger.git
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97 lines
4.2 KiB
Haskell
Executable File
97 lines
4.2 KiB
Haskell
Executable File
#!/usr/bin/env runhaskell
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{-
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Make/update hledger release notes from the latest release's changelogs.
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Run this in the root of the hledger repo, in a release branch.
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If you have switched branch recently you may have to kill an unhelpful
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ghc environment file first. Eg: rm -f .ghc.environment* && tools/relnotes.hs
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This reads the latest release's changes from the main CHANGES.md files,
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converts to release notes format, and inserts this into relnotes.md.
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If there already were release notes for this release (at top of relnotes),
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they will be replaced, except for a manually added "highlights" paragraph if any
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(after the release heading, beginning and ending with **), which is preserved.
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The release's version is taken from the the first h1 heading in the project CHANGES.md.
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It is assumed that all the other changelogs' first section is also for this version (XXX),
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and that changelogs and relnotes are non-empty with specific layout and heading formats.
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In the end I wrote this in haskell because everything else was harder.
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-}
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import Data.Char
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import Data.List
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import System.IO
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import System.Process
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import Text.Printf
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main = do
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-- gather latest release changes & info
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(projectChangesHeading, projectChanges) <- changelogFirstSection <$> readFile "CHANGES.md"
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(hledgerChangesHeading, hledgerChanges) <- changelogFirstSection <$> readFile "hledger/CHANGES.md"
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(hledgerUiChangesHeading, hledgerUiChanges) <- changelogFirstSection <$> readFile "hledger-ui/CHANGES.md"
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(hledgerWebChangesHeading, hledgerWebChanges) <- changelogFirstSection <$> readFile "hledger-web/CHANGES.md"
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reltags <- lines <$> readProcess "git" ["tag", "--sort=-creatordate", "-l", "[0-9]*"] ""
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let
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[_, ver, date] = words projectChangesHeading
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prevver:_ = drop 1 $ dropWhile (/=ver) reltags
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relauthors <- map (unwords . drop 1 . words) . lines <$> readProcess "git" ["shortlog", "-sn", prevver<>".."<>ver] ""
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-- convert to release notes format
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let
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newrelnotesheading = printf "## %s hledger-%s\n" date ver
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newrelnotesbody = intercalate "\n\n" [
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changelogHeadingToRelnotesHeading "hledger" hledgerChangesHeading, hledgerChanges,
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changelogHeadingToRelnotesHeading "hledger-ui" hledgerUiChangesHeading, hledgerUiChanges,
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changelogHeadingToRelnotesHeading "hledger-web" hledgerWebChangesHeading, hledgerWebChanges,
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"### project changes " <> ver <> "\n", projectChanges,
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"### credits " <> ver <> "\n", intercalate ",\n" relauthors <> ".\n"
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] <> "\n\n"
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-- insert or update in relnotes.md
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let relnotesfile = "doc/relnotes.md"
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(preamble, rnlatestver, rnlatesthighlights, rnlatestbody, rest) <-
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relnotesSections <$> readFile' relnotesfile
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-- putStrLn $
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writeFile relnotesfile $
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unlines [
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preamble,
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newrelnotesheading,
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if null rnlatesthighlights then "" else rnlatesthighlights <> "\n",
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newrelnotesbody,
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if rnlatestver == ver then "" else rnlatestbody,
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rest
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] <> "\n"
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changelogFirstSection alltext =
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case uncons $ dropWhile (not.isReleaseHeading) $ lines alltext of
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Nothing -> ("","")
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Just (l,ls) -> (nl l, strip' $ unlines $ takeWhile (not.isReleaseHeading) ls)
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where
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isReleaseHeading = isPrefixOf "# "
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changelogHeadingToRelnotesHeading pkgname heading =
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let [_, ver, _] = words heading
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in printf "### %s %s\n" pkgname ver
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relnotesSections alltext = (unlines preamble, firstsectionver, firstsectionhighlights, firstsectionbody, rest)
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where
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isReleaseHeading = isPrefixOf "## "
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(preamble, (firstsectionheading:ls)) = span (not.isReleaseHeading) $ lines alltext
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firstsectionver = drop 8 $ (!!2) $ words firstsectionheading
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ls2 = dropWhile null ls
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(firstsectionhighlights, ls3) =
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case ls2 of
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('*':'*':_):_ -> (unlines $ takeWhile (not.null) ls2, dropWhile (not.null) ls2)
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_ -> ("", ls2)
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(firstsectionls, restls) = span (not.isReleaseHeading) ls3
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firstsectionbody = unlines $ firstsectionheading : firstsectionls
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rest = unlines restls
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unlines' = intercalate "\n"
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lstrip = dropWhile isSpace
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rstrip = reverse . lstrip . reverse
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strip = lstrip . rstrip
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strip' = nl . strip
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nl = (<>"\n")
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