Add contrib for converting PRs (#129)

Tiny check to make idempotent (more or less)

Add contrib for converting PRs

Signed-off-by: jolheiser <john.olheiser@gmail.com>

Co-authored-by: jolheiser <john.olheiser@gmail.com>
Reviewed-on: https://gitea.com/gitea/blog/pulls/129
Reviewed-by: Andrew Thornton <art27@cantab.net>
Reviewed-by: 6543 <6543@noreply.gitea.io>

contrib/pulls/README.md

@@ -0,0 +1,10 @@
+# pulls contrib
+
+This is a Go "script" to convert all PRs like `#100` to `[#100](https://github.com/go-gitea/gitea/pull/100)`
+
+### Usage
+
+From the base directory
+```
+go run contrib/pulls/pulls.go --release 1.11.4
+```

contrib/pulls/pulls.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"regexp"
+)
+
+var (
+	pullURL   = "https://github.com/go-gitea/gitea/pull/"
+	pullRegex = regexp.MustCompile(`#(\d+)\)`)
+)
+
+func main() {
+	var release string
+	flag.StringVar(&release, "release", "", "The release to target")
+	flag.Parse()
+
+	if release == "" {
+		fmt.Println("missing --release flag")
+		return
+	}
+
+	fi, err := os.OpenFile(fmt.Sprintf("content/post/release-of-%s.md", release), os.O_RDWR, os.ModePerm)
+	if os.IsNotExist(err) {
+		fmt.Printf("could not find content/post/release-of-%s.md\n", release)
+		return
+	} else if err != nil {
+		fmt.Println(err)
+		return
+	}
+	defer fi.Close()
+
+	data, err := ioutil.ReadAll(fi)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	repl := pullRegex.ReplaceAll(data, []byte(`[#$1](`+pullURL+`$1)`))
+	if _, err := fi.WriteAt(repl, 0); err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	fmt.Println("conversion complete")
+}