samples: update syntax

CHANGELOG.md

@@ -3,6 +3,7 @@
 
 ## Trunk
 
+* samples: update syntax
 package: improve ignore files
 
 ## Version 3.0.0

samples/api.callback.js

@@ -0,0 +1,13 @@
+
+const parse = require('../lib')
+const assert = require('assert')
+
+const input = '#Welcome\n"1","2","3","4"\n"a","b","c","d"'
+parse(input, {
+  comment: '#'
+}, function(err, output){
+  assert.deepEqual(
+    output,
+    [ [ '1', '2', '3', '4' ], [ 'a', 'b', 'c', 'd' ] ]
+  )
+})

samples/api.pipe.js

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+
+const parse = require('..')
+const generate = require('csv-generate')
+const transform = require('stream-transform')
+
+const parser = parse({
+  delimiter: ':'
+})
+const input = generate({
+  length: 20
+})
+const transformer = transform(function(record, callback){
+  setTimeout(function(){
+    callback(null, record.join(' ')+'\n')
+  }, 500)
+}, {
+  parallel: 5
+})
+input.pipe(parser).pipe(transformer).pipe(process.stdout)

samples/api.stream.js

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+
+const parse = require('../lib')
+const assert = require('assert')
+
+const output = []
+// Create the parser
+const parser = parse({
+  delimiter: ':'
+})
+// Write data to the stream
+parser.write("root:x:0:0:root:/root:/bin/bash\n")
+parser.write("someone:x:1022:1022::/home/someone:/bin/bash\n")
+// Close the readable stream
+parser.end()
+// Use the writable stream api
+parser.on('readable', function(){
+  let record
+  while (record = parser.read()) {
+    output.push(record)
+  }
+})
+// Catch any error
+parser.on('error', function(err){
+  console.error(err.message)
+})
+// When we are done, test that the parsed output matched what expected
+parser.on('end', function(){
+  assert.deepEqual(
+    output,
+    [
+      [ 'root','x','0','0','root','/root','/bin/bash' ],
+      [ 'someone','x','1022','1022','','/home/someone','/bin/bash' ]
+    ]
+  )
+})

samples/module.sync.js

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+
+// The package "should" must be installed:   
+// `npm install should`
+
+const parse = require('../lib/sync')
+const assert = require('assert')
+
+const input = `
+"key_1","key_2"
+"value 1","value 2"
+`
+const records = parse(input, {
+  columns: true,
+  skip_empty_lines: true
+})
+assert.deepEqual(records, [{ key_1: 'value 1', key_2: 'value 2' }])