Reads release notes from clipboard and prints condensed version to console.

release-notes-condenser.go

/* Reads release notes from clipboard and prints condensed version to console.
 *
 * **BEFORE**
 *
 * - Update ktlint to v1.0.1 (#92)
 * - Update dependency gradle to v8.3 (#86)
 * - Update dependency gradle to v8.4 (#91)
 * - Update dependency org.slf4j:slf4j-simple to v2.0.9 (#90)
 * - Update ktlint to v1 (major) (#89)
 *
 * **AFTER**
 *
 * - Update ktlint to v1.0.1 (#89, #92)
 * - Update dependency gradle to v8.4 (#86, #91)
 * - Update dependency org.slf4j:slf4j-simple to v2.0.9 (#90)
 */

package main

import (
	"fmt"
	"regexp"
	"sort"
	"strconv"
	"strings"

	"github.com/hashicorp/go-version"
	"golang.design/x/clipboard"
)

func main() {
	err := clipboard.Init()
	if err != nil {
		panic(err)
	}

	text := string(clipboard.Read(clipboard.FmtText))
	lines := strings.Split(text, "\n")

	versions := make(map[string]string)
	prs := make(map[string][]int)

	for i := 0; i < len(lines); i++ {
		line := lines[i]
		artifact, v, p := splitLine(line)
		pr, _ := strconv.Atoi(p)
		putLatest(&versions, artifact, v)
		prs[artifact] = append(prs[artifact], pr)
	}

	for artifact, pr := range prs {
		sort.Ints(pr)
		v := versions[artifact]
		fmt.Printf("- Update %s to v%s (%v)\n", artifact, v, flatten(pr))
	}
}

func putLatest(versions *map[string]string, artifact string, ver string) {
	new := sanitize(&ver)
	p, hasPrev := (*versions)[artifact]
	if !hasPrev || new.GreaterThan(sanitize(&p)) {
		(*versions)[artifact] = ver
	}
}

func sanitize(v *string) *version.Version {
	if v == nil {
		return nil
	}
	if idx := strings.IndexByte(*v, ' '); idx >= 0 {
		ver, _ := version.NewVersion((*v)[:idx])
		return ver
	} else {
		ver, _ := version.NewVersion(*v)
		return ver
	}
}

func splitLine(line string) (string, string, string) {
	re := regexp.MustCompile(`- Update (.*) to v(.*) \(#(\d+)\)`)
	matches := re.FindStringSubmatch(line)
	return matches[1], matches[2], matches[3]
}

func flatten(prs []int) string {
	text := ""
	for _, pr := range prs {
		if len(text) > 0 {
			text += ", "
		}
		text += "#"
		text += strconv.Itoa(pr)
	}
	return text
}