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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}

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