started implementing cldf stats command

Author: xrotwang

main.go

@@ -5,9 +5,53 @@ import (
 	"fmt"
 	"gocldf/csvw/dataset"
 	"os"
-	"strconv"
+	"text/tabwriter"
 )
 
+/*
+	Type                  Rows
+
+-----------------  -----------------  -------
+media.csv          MediaTable             583
+examples.csv       ExampleTable         94672
+languages.csv      LanguageTable           42
+contributions.csv  ContributionTable       42
+parameters.csv     ParameterTable         335
+speakers.csv                              289
+phones.csv                            1863702
+words.csv                              896664
+glosses.csv                              2053
+sources.bib        Sources                 52
+*/
+func stats(ds *dataset.Dataset) {
+	ds.LoadData()
+
+	//fmt.Println(ds.MetadataPath)
+	//fmt.Println(":")
+	w := tabwriter.NewWriter(os.Stdout, 0, 0, 1, ' ', tabwriter.Debug)
+	fmt.Fprintf(w, "%v\t%v\t%v\n", "Filename", "Component", "Rows")
+	fmt.Fprintf(w, "%v\t%v\t%v\n", "--------", "---------", "----")
+	for _, table := range ds.Tables {
+		cname := ""
+		if table.Comp != "" {
+			cname = table.CanonicalName()
+		}
+		fmt.Fprintf(w, "%v\t%v\t%v\n", table.Url, cname, len(table.Data))
+		/*
+			fmt.Println(table.CanonicalName() + ": " + strconv.Itoa(len(table.Columns)) + " columns")
+			for _, col := range table.Columns {
+				fmt.Println("   " + col.CanonicalName())
+			}
+			fmt.Println(strconv.Itoa(len(table.Data)) + " rows")
+			fmt.Println("ID of first item: ")
+			fmt.Println(table.Data[0]["cldf_id"])
+			fmt.Println("---")
+
+		*/
+	}
+	w.Flush()
+}
+
 func main() {
 	flag.Usage = func() {
 		fmt.Printf("Usage: %s <CLDF metadata file>\n", os.Args[0])
@@ -17,18 +61,5 @@ func main() {
 		return
 	}
 	ds := dataset.New(os.Args[1:][0])
-	ds.LoadData()
-
-	fmt.Println(ds.MetadataPath)
-	fmt.Println(":")
-	for _, table := range ds.Tables {
-		fmt.Println(table.CanonicalName() + ": " + strconv.Itoa(len(table.Columns)) + " columns")
-		for _, col := range table.Columns {
-			fmt.Println("   " + col.CanonicalName())
-		}
-		fmt.Println(strconv.Itoa(len(table.Data)) + " rows")
-		fmt.Println("ID of first item: ")
-		fmt.Println(table.Data[0]["cldf_id"])
-		fmt.Println("---")
-	}
+	stats(ds)
 }