Ongoing work on userAdd with csv support

src/cmdUser/userAdd.go

 package cmdUser
 
 import (
+	"errors"
 	u "nexus-client/utils"
 	g "nexus-client/globals"
 )
@@ -25,20 +26,18 @@ func (cmd *Add)PrintUsage() {
 	}
 	u.PrintlnErr("―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――")
 	u.PrintlnErr("USAGE: "+cmd.Name+" email firstname lastname password [capability ...]")
+	u.PrintlnErr("       "+cmd.Name+" file.csv")
 	u.PrintlnErr("―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――")
+	const usage string = `file.csv   5-column CSV file defining each new user:
+               column1    email
+               column2    firstname
+               column3    lastname
+               column4    password
+               column5    capabilities (comma-separated)`
+	u.PrintlnErr(usage)
 }
 
-func (cmd *Add)Run(args []string) int {
-	client := g.GetInstance().Client
-	host := g.GetInstance().Host
-
-	argc := len(args)
-	if argc < 4 {
-		cmd.PrintUsage()
-		return 1
-	}
-
-	type UserArgs struct {
+type cmdArgs struct {
 	Email string
 	FirstName string
 	LastName string
@@ -46,7 +45,12 @@ func (cmd *Add)Run(args []string) int {
 	Caps map[string]int
 }
 
-	userArgs := &UserArgs {
+func (cmd *Add)Run(args []string) int {
+
+	argc := len(args)
+	if argc >= 4 {
+		// Detected syntax: email firstname lastname pwd [caps]
+		cargs := &cmdArgs {
 			Email: args[0],
 			FirstName: args[1],
 			LastName: args[2],
@@ -56,21 +60,53 @@ func (cmd *Add)Run(args []string) int {
 
 		if argc > 4 {
 			for _, cap := range args[4:] {
-			userArgs.Caps[cap] = 1
+				cargs.Caps[cap] = 1
 			}
 		}
 
-	resp, err := client.R().SetBody(userArgs).Post(host+"/users")
+		if err := cmd.runRequest(cargs); err != nil {
+			u.PrintlnErr(err.Error())
+			return 1
+		}
+	} else if argc == 1 {
+		// Detected syntax: file.csv
+		/*
+		column1    email
+		column2    firstname
+		column3    lastname
+		column4    password
+		column5    capabilities (comma-separated)`
+		*/
+
+		var userFields[5][]
+
+		csvFile = args[0]
+		emails, err = u.ReadCSVColumn(csvFile, 0)
 		if err != nil {
-		u.PrintlnErr("Error: "+err.Error())
+			u.PrintlnErr(err.Error())
+			return 1
+		}
+	} else {
+		cmd.PrintUsage()
 		return 1
 	}
 
+	return 0
+}
+
+func (cmd *Add)runRequest(args *cmdArgs) error {
+	client := g.GetInstance().Client
+	host := g.GetInstance().Host
+
+	resp, err := client.R().SetBody(args).Post(host+"/users")
+	if err != nil {
+		return errors.New("Error: "+err.Error())
+	}
+
 	if resp.IsSuccess() {
 		u.Println(resp)
-		return 0
+		return nil
 	} else {
-		u.PrintlnErr("Error: "+resp.Status()+": "+resp.String())
-		return 1
+		return errors.New("Error: "+resp.Status()+": "+resp.String())
 	}
 }

src/cmdVM/vmCreate.go

 package cmdVM
 
 import (
-	"os"
 	"fmt"
-	"errors"
 	"strconv"
-	"encoding/csv"
 	u "nexus-client/utils"
 	g "nexus-client/globals"
 )
@@ -77,7 +74,7 @@ func (cmd *Create)Run(args []string) int {
 			// It's not a number, so we assume it's a CSV file.
 			// Checks if the file exists.
 			file := args[5]
-			csvEntries, err = cmd.getCSVColumn(file, 0)
+			csvEntries, err = u.ReadCSVColumn(file, 0)
 			if err != nil {
 				u.PrintlnErr(err.Error())
 				return 1
@@ -145,22 +142,3 @@ func (cmd *Create)Run(args []string) int {
 
 	return statusCode
 }
-
-func (cmd *Create)getCSVColumn(csvFile string, column int) ([]string, error) {
-	file, err := os.Open(csvFile)
-    if err != nil {
-        return nil, errors.New("Failed opening \""+csvFile+"\"")
-    }
-    reader := csv.NewReader(file)
-    records, err := reader.ReadAll()
-    if err != nil {
-        return nil, errors.New("\""+csvFile+"\": "+err.Error())
-	}
-
-	var entries []string
-	for _, col := range(records) {
-		entries = append(entries, col[column])
-	}
-
-	return entries, nil
-}