1 files changed, 83 insertions, 0 deletions
diff --git a/tools/updater/main.go b/tools/updater/main.go
new file mode 100644
index 0000000..e5e377c
--- /dev/null
+++ b/tools/updater/main.go
@@ -0,0 +1,83 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+// get branchmap of mercurial repository served over http
+func branchmap(repository string) (branches map[string]string, err error) {
+	resp, err := http.Get(repository + "/?cmd=branchmap")
+
+	if err != nil {
+		return
+	}
+
+	defer resp.Body.Close()
+	body, err := ioutil.ReadAll(resp.Body)
+
+	branches = make(map[string]string)
+	for _, line := range strings.Split(string(body), "\n") {
+		a := strings.Split(line, " ")
+		branches[a[0]] = a[1]
+	}
+
+	return
+}
+
+func poi(executable string) (version string, err error) {
+	cmd := exec.Command(executable, "--version")
+
+	// wait for complete
+	err = cmd.Wait()
+
+	// return output
+	output, err := cmd.Output()
+	v := strings.Split(string(output), "-")
+	version = v[len(v)-1]
+	return
+}
+
+func main() {
+	helpFlag := flag.Bool("help", false, "Show help information")
+	verboseFlag := flag.Bool("verbose", false, "Print more information")
+	execFlag := flag.String("exec", "poi", "Executable path")
+	repoFlag := flag.String("repo", "https://neueland.iserlohn-fortress.net/smolbote.hg", "Repository path")
+	flag.Parse()
+
+	// help flag --> show usage and exit
+	if *helpFlag {
+		fmt.Println("Usage:")
+		flag.PrintDefaults()
+		os.Exit(0)
+	}
+
+	fmt.Println("Getting poi --version")
+	poi_version, err := poi(*execFlag)
+	if err != nil {
+		fmt.Println("error:", err)
+	}
+	fmt.Println(poi_version)
+
+	// get branchmap
+	fmt.Println("Getting branchmap...")
+	if *verboseFlag {
+		fmt.Println("for repository", *repoFlag)
+	}
+
+	branches, err := branchmap(*repoFlag)
+	if err != nil {
+		fmt.Println("Error getting branchmap:", err)
+		os.Exit(1)
+	}
+
+	for branch, commit := range branches {
+		fmt.Println("-", branch, ":", commit[0:len(poi_version)-1])
+	}
+
+}