Read csv file format from http://download.geonames.org/export/zip/MX.zip

read_csv_file.go

/*
twitter@hector_gool

Yoy can download MX.txt file from the next site:
	http://download.geonames.org/export/zip/MX.zip
*/

package main

import (
	"encoding/csv"
	"fmt"
	"os"
)

const max = 10

type Document struct {
	cp, colonia, ciudad, delegacion, lat, lon string
}

func main() {

	d := &Document{}

	file, err := os.Open("./MX.txt")
	printError(err)
	defer file.Close()

	reader := csv.NewReader(file)
	reader.Comma = '\t' //tab delimited

	rows, err := reader.ReadAll()
	printError(err)

	for n, each := range rows {
		d.cp = each[1]
		d.colonia = each[2]
		d.ciudad = each[3]
		d.delegacion = each[5]
		d.lat = each[9]
		d.lon = each[10]

		n++
		if n <= max {
			fmt.Printf(" %v) | %v | %v | %v | %v | %v | %v \n", n, d.cp, d.colonia, d.ciudad, d.delegacion, d.lat, d.lon)
		}
	}

}

func printError(err error) {
	if err != nil {
		fmt.Printf("\nError: %v \n ", err.Error())
		os.Exit(1)
	}
}