Test your AI Agents with the all-new Agent to Agent Testing Platform.Learn More

How to use MakeHeader method of csv Package

Best K6 code snippet using csv.MakeHeader

convert.go

Source:convert.go

1package convert2import (3	"encoding/csv"4	"io"5	"math/big"6	"net"7	"os"8	"github.com/mikioh/ipaddr"9	"github.com/pkg/errors"10)11type headerFunc func([]string) []string12type lineFunc func(*ipaddr.Prefix, []string) []string13// ConvertFile converts the MaxMind GeoIP2 or GeoLite2 CSV file `inputFile` to14// `outputFile` file using a different representation of the network. The15// representation can be specified by setting one or more of `cidr`,16// `ipRange`, or `intRange` to true. If none of these are set to true, it will17// strip off the network information.18func ConvertFile(19	inputFile string,20	outputFile string,21	cidr bool,22	ipRange bool,23	intRange bool,24) error {25	outFile, err := os.Create(outputFile)26	if err != nil {27		return errors.Wrapf(err, "error creating output file (%s)", outputFile)28	}29	defer outFile.Close()30	inFile, err := os.Open(inputFile)31	if err != nil {32		return errors.Wrapf(err, "error opening input file (%s)", inputFile)33	}34	defer inFile.Close()35	return Convert(inFile, outFile, cidr, ipRange, intRange)36}37// Convert writes the MaxMind GeoIP2 or GeoLite2 CSV in the `input` io.Reader38// to the Writer `output` using the network representation specified by setting39// `cidr`, ipRange`, or `intRange` to true. If none of these are set to true,40// it will strip off the network information.41func Convert(42	input io.Reader,43	output io.Writer,44	cidr bool,45	ipRange bool,46	intRange bool,47) error {48	makeHeader := func(orig []string) []string { return orig }49	makeLine := func(_ *ipaddr.Prefix, orig []string) []string { return orig }50	if intRange {51		makeHeader = addHeaderFunc(makeHeader, intRangeHeader)52		makeLine = addLineFunc(makeLine, intRangeLine)53	}54	if ipRange {55		makeHeader = addHeaderFunc(makeHeader, rangeHeader)56		makeLine = addLineFunc(makeLine, rangeLine)57	}58	if cidr {59		makeHeader = addHeaderFunc(makeHeader, cidrHeader)60		makeLine = addLineFunc(makeLine, cidrLine)61	}62	return convert(input, output, makeHeader, makeLine)63}64func addHeaderFunc(first headerFunc, second headerFunc) headerFunc {65	return func(header []string) []string {66		return second(first(header))67	}68}69func addLineFunc(first lineFunc, second lineFunc) lineFunc {70	return func(network *ipaddr.Prefix, line []string) []string {71		return second(network, first(network, line))72	}73}74func cidrHeader(orig []string) []string {75	return append([]string{"network"}, orig...)76}77func cidrLine(network *ipaddr.Prefix, orig []string) []string {78	return append([]string{network.String()}, orig...)79}80func rangeHeader(orig []string) []string {81	return append([]string{"network_start_ip", "network_last_ip"}, orig...)82}83func rangeLine(network *ipaddr.Prefix, orig []string) []string {84	return append(85		[]string{network.IP.String(), network.Last().String()},86		orig...,87	)88}89func intRangeHeader(orig []string) []string {90	return append([]string{"network_start_integer", "network_last_integer"}, orig...)91}92func intRangeLine(network *ipaddr.Prefix, orig []string) []string {93	startInt := new(big.Int)94	startInt.SetBytes(canonicalizeIP(network.IP))95	endInt := new(big.Int)96	endInt.SetBytes(canonicalizeIP(network.Last()))97	return append(98		[]string{startInt.String(), endInt.String()},99		orig...,100	)101}102func canonicalizeIP(ip net.IP) net.IP {103	if v4 := ip.To4(); v4 != nil {104		return v4105	}106	return ip107}108func convert(109	input io.Reader,110	output io.Writer,111	makeHeader headerFunc,112	makeLine lineFunc,113) error {114	reader := csv.NewReader(input)115	writer := csv.NewWriter(output)116	header, err := reader.Read()117	if err != nil {118		return errors.Wrap(err, "error reading CSV header")119	}120	newHeader := makeHeader(header[1:])121	err = writer.Write(newHeader)122	if err != nil {123		return errors.Wrap(err, "error writing CSV header")124	}125	for {126		record, err := reader.Read()127		if err == io.EOF {128			break129		} else if err != nil {130			return errors.Wrap(err, "error reading CSV")131		}132		p, err := makePrefix(record[0])133		if err != nil {134			return err135		}136		err = writer.Write(makeLine(p, record[1:]))137		if err != nil {138			return errors.Wrap(err, "error writing CSV")139		}140	}141	writer.Flush()142	return errors.Wrap(writer.Error(), "error writing CSV")143}144func makePrefix(network string) (*ipaddr.Prefix, error) {145	_, ipn, err := net.ParseCIDR(network)146	if err != nil {147		return nil, errors.Wrapf(err, "error parsing network (%s)", network)148	}149	return ipaddr.NewPrefix(ipn), nil150}...

producer.go

Source:producer.go

...3	transactionModel "github.com/Confialink/wallet-accounts/internal/modules/transaction/model"4	"github.com/Confialink/wallet-pkg-utils/csv"5)6type Builder interface {7	MakeHeader()8	MakeBody(items []*transactionModel.Transaction, requestsMap map[uint64]interface{})9}10type Producer struct {11	Builder Builder12}13func NewProducer(t string, file *csv.File) *Producer {14	builder := NewBuilderCreator().CreateBuilder(t, file)15	return &Producer{builder}16}17// Construct tells the builder what to do and in what order.18func (p *Producer) Construct(items []*transactionModel.Transaction, requestsMap map[uint64]interface{}) error {19	p.Builder.MakeHeader()20	p.Builder.MakeBody(items, requestsMap)21	return nil22}...

MakeHeader

Using AI Code Generation

1import (2func main() {3	file, err := os.Open("1.csv")4	if err != nil {5		fmt.Println(err)6	}7	defer file.Close()8	reader := csv.NewReader(file)9	header, err := reader.Read()10	if err != nil {11		fmt.Println(err)12	}13	fmt.Println(header)14}15import (16func main() {17	file, err := os.Open("2.csv")18	if err != nil {19		fmt.Println(err)20	}21	defer file.Close()22	reader := csv.NewReader(file)23	csvData, err := reader.ReadAll()24	if err != nil {25		fmt.Println(err)26		os.Exit(1)27	}28	for _, each := range csvData {29		for _, col := range each {30			fmt.Println(col)31		}32	}33}34import (35func main() {36	file, err := os.Open("3.csv")37	if err != nil {38		fmt.Println(err)39	}40	defer file.Close()41	reader := csv.NewReader(file)42	csvData, err := reader.ReadAll()43	if err != nil {44		fmt.Println(err)45		os.Exit(1)46	}47	for _, each := range csvData {48		for _, col := range each {49			fmt.Println(col)50		}51	}52}53import (54func main() {55	file, err := os.Open("4.csv")56	if err != nil {57		fmt.Println(err)58	}59	defer file.Close()60	reader := csv.NewReader(file)61	csvData, err := reader.ReadAll()

MakeHeader

Using AI Code Generation

1import (2func main() {3	file, err := os.Open("sample.csv")4	if err != nil {5		fmt.Println(err)6	}7	defer file.Close()8	reader := csv.NewReader(bufio.NewReader(file))9	records, err := reader.ReadAll()10	if err != nil {11		fmt.Println(err)12	}13	header := reader.Read()14	fmt.Println(header)15	fmt.Println(records)16}

MakeHeader

Using AI Code Generation

1import (2func main() {3	file, err := os.Create("test.csv")4	if err != nil {5		log.Fatal(err)6	}7	defer file.Close()8	writer := csv.NewWriter(file)9	writer.Write([]string{"Name", "Age"})10	writer.Write([]string{"James", "25"})11	writer.Write([]string{"Moneypenny", "32"})12	writer.Write([]string{"M", "54"})13	writer.Flush()14}

MakeHeader

Using AI Code Generation

1import (2func main() {3	f, err := os.Open("file.csv")4	if err != nil {5		fmt.Println("Error opening file")6	}7	defer f.Close()8	r := csv.NewReader(f)9	line, err := r.Read()10	if err != nil {11		fmt.Println("Error reading header")12	}13	header = r.MakeHeader(line)14	for {15		line, err := r.Read()16		if err == io.EOF {17		}18		if err != nil {19			fmt.Println("Error reading line")20		}21		values := r.MakeValues(line, header)22		fmt.Println(values)23	}24}

MakeHeader

Using AI Code Generation

1import (2func main() {3	file := xlsx.NewFile()4	sheet, err := file.AddSheet("Sheet1")5	if err != nil {6		fmt.Printf(err.Error())7	}8	row := sheet.AddRow()9	cell := row.AddCell()10	err = file.Save("1.xlsx")11	if err != nil {12		fmt.Printf(err.Error())13	}14	f, err := os.Open("1.xlsx")15	if err != nil {16		fmt.Printf(err.Error())17	}18	defer f.Close()19	xlFile, err := xlsx.OpenBinary(f)20	if err != nil {21		fmt.Printf(err.Error())22	}23	if err != nil {24		fmt.Printf(err.Error())25	}26	fmt.Println(cell.Value)27}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.