Short syntax for aptly mirror create to support ppa:user/project mirror URLs.

debian/ppa.go

@@ -0,0 +1,54 @@
+package debian
+
+import (
+	"fmt"
+	"github.com/smira/aptly/utils"
+	"os/exec"
+	"regexp"
+	"strings"
+)
+
+var ppaRegexp = regexp.MustCompile("^ppa:([^/]+)/(.+)$")
+
+// ParsePPA converts ppa URL like ppa:user/ppa-name to full HTTP url
+func ParsePPA(ppaURL string) (url string, distribution string, components []string, err error) {
+	matches := ppaRegexp.FindStringSubmatch(ppaURL)
+	if matches == nil {
+		err = fmt.Errorf("unable to parse ppa URL: %v", ppaURL)
+		return
+	}
+
+	distributorID := utils.Config.PpaDistributorID
+	if distributorID == "" {
+		distributorID, err = getDistributorID()
+		if err != nil {
+			err = fmt.Errorf("unable to figure out Distributor ID: %s, please set config option ppaDistributorID", err)
+			return
+		}
+	}
+
+	codename := utils.Config.PpaCodename
+	if codename == "" {
+		codename, err = getCodename()
+		if err != nil {
+			err = fmt.Errorf("unable to figure out Codename: %s, please set config option ppaCodename", err)
+			return
+		}
+	}
+
+	distribution = codename
+	components = []string{"main"}
+	url = fmt.Sprintf("http://ppa.launchpad.net/%s/%s/%s", matches[1], matches[2], distributorID)
+
+	return
+}
+
+func getCodename() (string, error) {
+	out, err := exec.Command("lsb_release", "-sc").Output()
+	return strings.TrimSpace(string(out)), err
+}
+
+func getDistributorID() (string, error) {
+	out, err := exec.Command("lsb_release", "-si").Output()
+	return strings.ToLower(strings.TrimSpace(string(out))), err
+}