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golang csv

Restu Wahyu Saputra answered on May 26, 2024 Popularity 3/10 Helpfulness 1/10

answer golang csv

related golang csv

golang csv

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package main

import (
	"bytes"
	"encoding/csv"
	"fmt"
	"io/fs"
	"log"
	"os"
	"sync"
)

func main() {
	buf, err := fs.ReadFile(os.DirFS("."), "demo2.csv")
	if err != nil {
		log.Fatal(err)
	}

	csvReader := csv.NewReader(bytes.NewBuffer(buf))
	record, err := csvReader.ReadAll()

	headers := record[:1][0]
	recordLength := len(record)
	records := record[1:recordLength]

	data := CsvRecursive(headers, records)

	for _, v := range data {
		fmt.Println(v)
	}
}

func CsvRecursive(headers []string, record [][]string) []map[string]interface{} {
	var (
		mutex           *sync.Mutex            = new(sync.Mutex)
		csvRecord       map[string]interface{} = make(map[string]interface{})
		csvRecordLength int                    = len(record)
	)

	if csvRecordLength == 0 {
		return nil
	}

	if csvRecordLength == 1 {
		for i, v := range headers {
			csvRecord[v] = record[0][i]
		}

		return []map[string]interface{}{csvRecord}
	}

	mid := len(record) / 2
	records := make(chan ([]map[string]interface{}))

	go func(records chan []map[string]interface{}) {
		left := CsvRecursive(headers, record[:mid])
		right := CsvRecursive(headers, record[mid:])

		mutex.Lock()
		defer mutex.Unlock()

		records <- append(left, right...)
	}(records)

	return <-records
}

Popularity 3/10 Helpfulness 1/10 Language go

Source: Grepper

Tags: csv go

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Contributed on May 26 2024

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

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golang csv

Comment

func CsvRecursive(headers []string, record [][]string) []map[string]interface{} {
	csvRecordLength := len(record)
	csvRecord := make(map[string]interface{})

	if csvRecordLength == 0 {
		return nil
	}

	if csvRecordLength == 1 {
		for i, v := range headers {
			csvRecord[v] = record[0][i]
		}
		return []map[string]interface{}{csvRecord}
	}

	mid := len(record) / 2
	left := CsvRecursive(headers, record[:mid])
	right := CsvRecursive(headers, record[mid:])

	return append(left, right...)
}

func CsvRecursive(headers []string, records [][]string) []map[string]interface{} {
	var wg sync.WaitGroup
	recordCount := len(records)
	csvRecords := make([]map[string]interface{}, recordCount)

	for i, record := range records {
		wg.Add(1)
		go func(i int, record []string) {
			csvRecord := make(map[string]interface{})
			for j, header := range headers {
				csvRecord[header] = record[j]
			}
			csvRecords[i] = csvRecord
			wg.Done()
		}(i, record)
	}

	wg.Wait()
	return csvRecords
}

Popularity 3/10 Helpfulness 2/10 Language go

Source: Grepper

Tags: go csv

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Contributed on May 26 2024

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

golang csv

Comment

package main

import (
	"bytes"
	"encoding/csv"
	"fmt"
	"io/fs"
	"log"
	"os"
	"sync"
)

func main() {
	buf, err := fs.ReadFile(os.DirFS("."), "demo2.csv")
	if err != nil {
		log.Fatal(err)
	}

	csvReader := csv.NewReader(bytes.NewBuffer(buf))
	records, err := csvReader.ReadAll()
	if err != nil {
		log.Fatal(err)
	}

	data := parseCsv(records)
	for _, v := range data {
		fmt.Println(v)
	}
}

func parseCsv(record [][]string) []map[string]interface{} {
	headers := record[:1][0]
	recordLength := len(record)
	records := record[1:recordLength]

	return reformatCsv(headers, records)
}

func reformatCsv(headers []string, record [][]string) []map[string]interface{} {
	var (
		mutex           *sync.Mutex            = new(sync.Mutex)
		wg              *sync.WaitGroup        = new(sync.WaitGroup)
		csvRecord       map[string]interface{} = make(map[string]interface{})
		csvRecordLength int                    = len(record)
	)

	if csvRecordLength == 0 {
		return nil
	}

	if csvRecordLength == 1 {
		for i, v := range headers {
			csvRecord[v] = record[0][i]
		}

		return []map[string]interface{}{csvRecord}
	}

	mid := len(record) / 2
	records := make(chan ([]map[string]interface{}))

	semanpro := make(chan bool, 1000)
	semanpro <- true

	wg.Add(1)
	go func(records chan []map[string]interface{}) {
		defer func() {
			<-semanpro
		}()

		wg.Done()

		left := reformatCsv(headers, record[:mid])
		right := reformatCsv(headers, record[mid:])

		mutex.Lock()
		defer mutex.Unlock()

		records <- append(left, right...)
	}(records)
	wg.Wait()

	return <-records
}

Popularity 3/10 Helpfulness 1/10 Language go

Source: Grepper

Tags: go csv

Link to this answer
Share Copy Link

Contributed on May 26 2024

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

golang csv

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