add flags for output format

cmd/root.go

@@ -29,6 +29,11 @@ import (
 
 var file string
 
+var matlabFmt bool
+var pythonFmt bool
+
+var oneline bool
+
 // rootCmd represents the base command when called without any subcommands
 var rootCmd = &cobra.Command{
 	Use:   "dptdist",
@@ -64,10 +69,23 @@ func parse(cmd *cobra.Command, args []string) {
 		panic("not an absorbing Markov chain!")
 	}
 
+	fmtOptions := make([]mat.FormatOption, 0)
+	if matlabFmt {
+		fmtOptions = append(fmtOptions, mat.FormatMATLAB())
+	} else if pythonFmt {
+		fmtOptions = append(fmtOptions, mat.FormatPython())
+	}
+	fmtOptions = append(fmtOptions, mat.Squeeze())
+
 	a := graph.AdjacencyMatrix()
-	out := mat.Formatted(a)
+	out := mat.Formatted(a, fmtOptions...)
+
+	if (matlabFmt || pythonFmt) != oneline {
+		fmt.Printf("%#v\n", out)
+	} else {
 		fmt.Printf("%v\n", out)
 	}
+}
 
 // Execute adds all child commands to the root command and sets flags appropriately.
 // This is called by main.main(). It only needs to happen once to the rootCmd.
@@ -91,4 +109,10 @@ func init() {
 
 	rootCmd.Flags().StringVarP(&file, "file", "f", "", "dot file with absorbing Markov chain")
 	rootCmd.MarkFlagRequired("file")
+
+	rootCmd.Flags().BoolVar(&matlabFmt, "matlab", false, "format output as MATLAB array")
+	rootCmd.Flags().BoolVar(&pythonFmt, "python", false, "format output as python array")
+	rootCmd.MarkFlagsMutuallyExclusive("matlab", "python")
+
+	rootCmd.Flags().BoolVar(&oneline, "oneline", false, "output on one line")
 }