adding my repo sync tool

cmd/slackware-sync/README.md

@@ -0,0 +1,15 @@
+# slackware-sync
+
+Really it is not limited to slackware, but that is what I was thinking when I
+wrote the first version.
+
+# install
+
+Install this command
+
+	go get github.com/vbatts/freezing-octo-hipster/cmd/slackware-sync
+
+Copy the `slackware-sync.toml` to `~/.slackware-sync.toml`, and edit as needed.
+
+Then either run it periodically, or add a crontab to run `slackware-sync -q`.
+

cmd/slackware-sync/main.go

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+package main
+
+import (
+	"flag"
+	"fmt"
+	"github.com/BurntSushi/toml"
+	"net/url"
+	"os"
+	"os/exec"
+	"path"
+)
+
+func main() {
+	flag.Parse()
+	var config GeneralConfig
+	_, err := toml.DecodeFile(*flConfigFile, &config)
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+
+	_, err = EnsureDirExists(config.SyncDir)
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+
+	for _, mirror := range config.Mirrors {
+		if !mirror.Enabled {
+			continue
+		}
+		uri, err := url.Parse(mirror.URL)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			continue
+		}
+		dest := path.Join(config.SyncDir, uri.Host, uri.Path)
+		_, err = EnsureDirExists(dest)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			continue
+		}
+
+		cmd := exec.Command("rsync", "-avPHS", uri.String(), dest+"/")
+		cmd.Stderr = os.Stderr // we'll want to see errors, regardless
+		if !*flQuiet {
+			cmd.Stdout = os.Stdout
+		}
+
+    err = cmd.Run()
+    if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+    }
+	}
+}
+
+func EnsureDirExists(path string) (os.FileInfo, error) {
+	stat, err := os.Stat(path)
+	if err != nil {
+		if !os.IsNotExist(err) {
+			return stat, err
+		}
+		if err = os.MkdirAll(path, 0755); err != nil {
+			return stat, err
+		}
+		if stat, err = os.Stat(path); err != nil {
+			return stat, err
+		}
+	}
+	return stat, nil
+}
+
+type GeneralConfig struct {
+	SyncDir string `toml:"sync_dir"`
+	Mirrors map[string]Mirror
+}
+
+type Mirror struct {
+	Title   string `toml:"title"`
+	URL     string `toml:"url"`
+	Enabled bool   `toml:"enabled"`
+}
+
+var (
+	flConfigFile = flag.String("c", path.Join(os.Getenv("HOME"), ".slackware-sync.toml"), "config file for the sync")
+	flQuiet      = flag.Bool("q", false, "less output")
+)

cmd/slackware-sync/slackware-sync.toml

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+sync_dir = "/mnt/storage/slackware"
+
+[mirrors] 
+
+  [mirrors.alien_multilib_current]
+  url = "rsync://taper.alienbase.nl/mirrors/people/alien/multilib/current/"
+  enabled = false
+
+  [mirrors.slackware64]
+  url = "rsync://slackware.osuosl.org/slackware/slackware64-current/"
+  enabled = true
+
+  [mirrors.slackware64_14.1]
+  url = "rsync://slackware.osuosl.org/slackware/slackware64-14.1/"
+  enabled = true
+
+  [mirrors.slackware32]
+  url = "rsync://slackware.osuosl.org/slackware/slackware-current/"
+  enabled = false
+