contents/ja/blog: add _2024.html (WIP)

cmd/contributorslister/main.go

@@ -0,0 +1,99 @@
+// Copyright 2024 Hajime Hoshi
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"cmp"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"os"
+	"os/exec"
+	"slices"
+	"strings"
+	"time"
+)
+
+func main() {
+	if err := xmain(); err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+}
+
+type commit struct {
+	Author author `json:"author"`
+}
+
+type author struct {
+	Login string `json:"login"`
+}
+
+func xmain() error {
+	flag.Parse()
+	repo := "hajimehoshi/ebiten"
+	if flag.NArg() > 0 {
+		repo = flag.Arg(0)
+	}
+
+	year := time.Now().Year()
+
+	cmd := exec.Command("gh", "api",
+		"-H", "Accept: application/vnd.github+json",
+		"-H", "X-GitHub-Api-Version: 2022-11-28",
+		"--paginate", "--slurp",
+		fmt.Sprintf("/repos/%s/commits?since=%d-12-01T00:00:00Z&until=%d-12-01T00:00:00Z", repo, year-1, year))
+	out, err := cmd.Output()
+	if err != nil {
+		if e, ok := err.(*exec.ExitError); ok {
+			return fmt.Errorf("error: %s\n%s", e, e.Stderr)
+		}
+		return err
+	}
+
+	var commitArrays [][]commit
+	if err := json.Unmarshal(out, &commitArrays); err != nil {
+		return err
+	}
+
+	committerCounts := map[string]int{}
+	for _, commits := range commitArrays {
+		for _, c := range commits {
+			committerCounts[c.Author.Login]++
+		}
+	}
+
+	type committer struct {
+		login string
+		count int
+	}
+	var committers []committer
+	for login, count := range committerCounts {
+		committers = append(committers, committer{login, count})
+	}
+
+	slices.SortFunc(committers, func(a, b committer) int {
+		if a.count != b.count {
+			return -(a.count - b.count)
+		}
+		return cmp.Compare(strings.ToLower(a.login), strings.ToLower(b.login))
+	})
+
+	for _, c := range committers {
+		fmt.Printf("%s: %d\n", c.login, c.count)
+	}
+
+	return nil
+}