Merge pull request #52 from grisu48/macros

Macros

cmd/pastad/pastad.go

@@ -728,6 +728,14 @@ func main() {
 	if cf.PastaDir == "" {
 		cf.PastaDir = "."
 	}
+
+	// Preparation steps
+	baseURL, err := ApplyMacros(cf.BaseUrl)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error applying macros: %s", err)
+		os.Exit(1)
+	}
+	cf.BaseUrl = baseURL
 	bowl.Directory = cf.PastaDir
 	os.Mkdir(bowl.Directory, os.ModePerm)
 

cmd/pastad/utils.go

@@ -182,3 +182,17 @@ func timeHumanReadable(timestamp int64) string {
 		return fmt.Sprintf("%d days", days)
 	}
 }
+
+/* Apply custom macros in the given string and return the result. The following macros are supports:
+* `$hostname` - Replace with the system hostname
+ */
+func ApplyMacros(txt string) (string, error) {
+	if strings.Contains(txt, "$hostname") {
+		hostname, err := os.Hostname()
+		if err != nil {
+			return "", err
+		}
+		txt = strings.ReplaceAll(txt, "$hostname", hostname)
+	}
+	return txt, nil
+}