csv-load-sync

Sync loading routine for a small comma-separated values file (.csv). Returns an array of objects, takes property names from the first line. Assumes everything is a string in quotes.

Install

Requires nodejs

npm install csv-load-sync

Inputs

Example CSV file with two records

"deviceId","description"
"1","iPhone 4"
"2","iPhone 4S"

Example CSV file with three records

"id","firstName","lastName","country","lastLogin"
"1","John","Smith","US","2013-08-04 23:57:38"
"2","Greg","Smith","US","2013-07-12 13:27:18"
"3","Harold","Smith","GB","2013-07-16 21:17:28"

Simple example

var loader = require('csv-load-sync');
var csv = loader('path/to/file.csv');
// csv is an Array of objects

Custom line splitting

Sometimes CSV data includes commas naturally, for example the follwing file has GPS location numbers which should be considered together.

"place","location"
"home",-41.20,20.11
"work",-41.3,20.2

We need to split each record line differently. You can pass the line to columns splitter function when calling load

function split(line, lineNumber) {
  if (lineNumber === 0) { // title line
    return line.split(',')
  }
  // our line will be <location>,<lat>,<lon>
  // and we want to combine lat and lon
  var parts = line.split(',')
  return [parts[0], parts[1] + ',' + parts[2]];
}
var results = load(filename, {
  getColumns: split
});
/*
[{
  place: 'home',
  location: '-41.20,20.11'
}, {
  place: 'work',
  location: '-41.3,20.2'
}]
*/

Fine print

Author: Gleb Bahmutov © 2015

• @bahmutov
• glebbahmutov.com
• blog

License: MIT - do anything with the code, but don't blame me if it does not work.

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