MAC-OUI-Database/handler_csv.go at master · gopy-art/MAC-OUI-Database · GitHub

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package macouidatabase

import (
	"fmt"
	"os"
	"strings"

	"github.com/gocarina/gocsv"
)

type MacCsv struct {
	path string
}

func (m *MacCsv) opendatabase() (*os.File, error) {
	return os.Open(m.path)
}

func (m *MacCsv) FindByOUI(oui string) (*MacAddressOUI, error) {
	var macAddresses []MacAddressOUI
	content, err := m.opendatabase()
	if err != nil {
		return nil, fmt.Errorf("error in open database, error = %v", err)
	}
	err = gocsv.Unmarshal(content, &macAddresses)
	if err != nil {
		return nil, fmt.Errorf("error in select data, error = %v", err)
	}
	for _, item := range macAddresses {
		if item.OUI == oui {
			return &item, nil
		}
	}
	return nil, fmt.Errorf("OUI does not exists")
}

func (m *MacCsv) FindByManufacturer(manufacturer string) ([]MacAddressOUI, error) {
	var macAddresses, results []MacAddressOUI
	content, err := m.opendatabase()
	if err != nil {
		return nil, fmt.Errorf("error in open database, error = %v", err)
	}
	err = gocsv.Unmarshal(content, &macAddresses)
	if err != nil {
		return nil, fmt.Errorf("error in select data, error = %v", err)
	}
	for _, item := range macAddresses {
		if strings.Contains(item.Manufacturer, manufacturer) {
			results = append(results, item)
		}
	}
	if len(macAddresses) == 0 {
		return nil, fmt.Errorf("manufacture does not exists")
	} else {
		return results, nil
	}
}

func (m *MacCsv) FindByAddress(address string) ([]MacAddressOUI, error) {
	var macAddresses, results []MacAddressOUI
	content, err := m.opendatabase()
	if err != nil {
		return nil, fmt.Errorf("error in open database, error = %v", err)
	}
	err = gocsv.Unmarshal(content, &macAddresses)
	if err != nil {
		return nil, fmt.Errorf("error in select data, error = %v", err)
	}
	for _, item := range macAddresses {
		if strings.Contains(item.Address, address) {
			results = append(results, item)
		}
	}
	if len(macAddresses) == 0 {
		return nil, fmt.Errorf("address does not exists")
	} else {
		return results, nil
	}
}

func (m *MacCsv) FindByShortName(short_name string) ([]MacAddressOUI, error) {
	var macAddresses, results []MacAddressOUI
	content, err := m.opendatabase()
	if err != nil {
		return nil, fmt.Errorf("error in open database, error = %v", err)
	}
	err = gocsv.Unmarshal(content, &macAddresses)
	if err != nil {
		return nil, fmt.Errorf("error in select data, error = %v", err)
	}
	for _, item := range macAddresses {
		if item.ShortName == short_name {
			results = append(results, item)
		}
	}
	if len(macAddresses) == 0 {
		return nil, fmt.Errorf("short_name does not exists")
	} else {
		return results, nil
	}
}

func (m *MacCsv) AllMacAddresses() ([]MacAddressOUI, error) {
	var macAddresses []MacAddressOUI
	content, err := m.opendatabase()
	if err != nil {
		return nil, fmt.Errorf("error in open database, error = %v", err)
	}
	err = gocsv.Unmarshal(content, &macAddresses)
	if err != nil {
		return nil, fmt.Errorf("error in select data, error = %v", err)
	}
	if len(macAddresses) == 0 {
		return nil, fmt.Errorf("database is empty")
	} else {
		return macAddresses, nil
	}
}