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parsing and serialize ini files

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js-ini

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A Node.js package for encoding/decoding ini-like strings.

Installation

npm install js-ini --save
yarn add js-ini

Examples

Example of parsing:

configs.ini

option = 2
useDatabase= true
password type = string

[Database settings]
nodes=5
user = admin
; some comment
password = some very*difficult=password:
database-name =my-project-db

[User settings]
param*1  = 2.5
param*2= struct

Javascript version

const ini = require('js-ini');
const fs = require('fs').promises;
fs.readFile('configs.ini', 'utf-8').then((txt) => {
  console.log(ini.parse(txt));
});

TypeScript version

import { parse } from 'js-ini';
import { promises as fs } from 'fs';
fs.readFile('configs.ini', 'utf-8').then((txt: string) => {
  console.log(parse(txt));
});

Output:

{
  'option': 2,
  'useDatabase': true,
  'password type': 'string',
  'Database settings': {
    'node': 5,
    'user': 'admin',
    'password': 'some very*difficult=password:'
  },
  'User settings': {
    'param*1': 2.5,
    'param*2': 'struct'
  }
}

API

parse(data: string, params?: IParseConfig): IIniObject

Alias: decode

data

Type: string

String with ini-like data

params

Type: IParseConfig

Decoding params

name type defaut value description
comment string ; String for start of comment
delimiter string = Delimiter between key and value
nothrow boolean false Use field Symbol('Errors of parsing') instead throw
autoTyping boolean true Try to auto translate strings to another values (translation map below)
dataSections string[] [] Section will be marked as dataSection and will be parsed like a array of string
protoSymbol boolean false no throw on __proto__ section and use symbol Symbol(__proto__) instead

Data section sample:

option = 2
useDatabase= true
password type = string

[some strings]
a82cfac96d9b71248bf5faa2b22d7cf7
0c420a02dc13656d15aefe71e5b06ecf

[User settings]
param*1  = 2.5
param*2= struct
import { parse } from 'js-ini';
import { promises as fs } from 'fs';
fs.readFile('configs.ini', 'utf-8').then((txt: string) => {
  console.log(parse(txt, { dataSections: ['some strings'] }));
});

Output:

{
  'option': 2,
  'useDatabase': true,
  'password type': "string",
  'some strings':
    'a82cfac96d9b71248bf5faa2b22d7cf7',
    '0c420a02dc13656d15aefe71e5b06ecf'
  ],
  'User settings': {
    'param*1': 2.5,
    'param*2': 'struct'
  }
}

stringify(data: IIniObject, params?: IStringifyConfig): string

Alias: encode

data

Type: object

object to encode to ini-string

params

Type: IStringifyConfig

Encoding params

name type defaut value description
delimiter string = Delimiter between key and value
blankLine boolean true Add blank lines between sections
spaceBefore boolean true Add space between key and delimiter
spaceAfter boolean false Add space between value and delimiter

$Errors

It is Symbol('Errors of parsing') for nothrow option

Example:

configs.ini

[scope with trash]
ok = value
trash
[scope with only trash]
only trash
[normal scope]
ok = value
const ini = require('js-ini');
const fs = require('fs').promises;
fs.readFile('configs.ini', 'utf-8').then((txt) => {
  console.log(ini.parse(txt));
});

Output:

{
  'scope with trash': {
    'ok': 'value',
  },
  'empty scope': {},
  'normal scope': {
    ok: 'value',
  },
  Symbol('Errors of parsing'): [
    new ParsingError('trash', 3),
    new ParsingError('only trash', 7),
  ]
}

$Proto

It is Symbol(__proto__) for protoSymbol option

Translation map for autoType

value to
true/false true/false
0/5.5/nan 0/5.5/NaN
blank value undefined
null null
12.4abc '12.4abc'
  • Translating is case-insensitive
  • Other values will be translated to padded strings

Additional tools

The library is provided with simple helpers that should help decrease size of boilerplate. Tools are divided into separated files which are not included to the default export.

readIniFile(path: string, params?: IParseConfig): Promise<IIniObject>

readIniFile reads path file and parses it

Usage

import { readIniFile } from 'js-ini/tools/read-ini'

await readIniFile('./mydir/example.ini', { nothrow: true })

writeIniFile(path: string, params?: IParseConfig): Promise<IIniObject>

writeIniFile translate ini object to ini-like string

Usage

import { writeIniFile } from 'js-ini/tools/write-ini'

await writeIniFile('./mydir/example.ini', {
  server: {
    IP: '127.0.0.1'
    user: 'Smith'
  }
}, { nothrow: true })

Test

npm run test

License

MIT

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