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control-js

v1.0.3

Published

a quick and dirty implementation of printf and sprintf

Downloads

5

Readme

Control

Control is an implementation of few of C printf functionality with extended features

Build Status

testing control-js

git clone https://github.com/zombieleet/control.git

cd control

npm install

export NODE_ENV="development" // linux and OSx

setx %NODE_ENV% development // windows

npm test

how to install

npm install --save control-js

usage

if you can work with c printf or the shell printf functionality, control will be easy

formaters

  1. %s "for strings"
  2. %d "for digits"
  3. %f "for floating point numbers"
  4. %u "for unsigned integers"
  5. %jn "for json data"
  6. %ob "for javascript objects"
  7. %bi "for binary numbers"
  8. %e or %E "for exponential numbers"
  9. %c "for printing single characters"
  10. %x or %X "for hexadecimal numbers"
  11. %ar "for arrays"

how to use formaters

    const { printf } = require('control-js');
    
    printf("my name is %s", "victory");
    printf("the first letter of my name is %c", "victory");

if the number of formters is not equal to the number of replacement strings , an error will be trhwon


    const { printf } = require('control-js');
    
    printf("the %s cost %d", "bacon");

working with field widths

fieldwidths is the number of space a replacement string should forgo


    const { printf } = require('control-js');

    printf("the %34s cost dollars %d", "bacon",100);

precisions, dataToPrint, number of characters to print

numbers

precision works for the flowing formaters

  1. %d
  2. %e
  3. %f
  4. %u

    const { printf } = require('control-js');    

    printf("%3.22d %.55u %.15e %.2f", 12, -1, 23, 24.56735);
    

data to print

  1. %jn
  2. %ob
  3. %ar

    const { printf } = require('control-js');
    
    const obj = {
        firstname:"victory",
        lastname: "osikwemhe",
        country: "nigeria",
        age: 21,
        hobbies: {
            sport: ["soccer","basketball"],
            singing: ["blues"],
            movies: ["action", "war", "horror", "scific"]
        },
        occupation: ["student"]
    };

    printf("%.4jn %.2ob %.3ar", JSON.stringify(obj),obj,["sleepy Hollow","The walking dead", "silicon valley", "vikings", "sense8"]);

number of characters to print

  1. %c
  2. %s
    
    const { printf } = require('control-js');
    
    printf("%.4c %.4s", "javascript", "node.js");
    

NOTE

if an invalid replacement string is specified for any formater, an error will be throwed

LICENSE

MIT

GNU ( either version 2 of the License, or at your option any later version. )