Package Exports

stringf

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (stringf) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Sringf

Dead simple cross-language string formatter

No dependencies, O(N*m)

Usage

go

import (
    "fmt"
    "github.com/thanhpk/stringf"
)

func main() {
    str := stringf.Format("hi {name}, here is your number {{2108}.", map[string]string{
        "name": "Kieu Thanh", // key should not contains spaces
    })
    fmt.Println(str)
}

// hi Kieu Thanh, here is your number {2108.

js

var stringf = require("stringf")

var str = stringf.Format("hi #name, here is your number {{2108.", {
    name: "Thanh",
})
console.log(str)

// hi Kieu Thanh, here is your number {2108.

Test

Go

go test

Js

npm test

Testcase

String	Parameter map	Output
hi {name}	name: `Thanh`	hi Thanh
hi {num}	num: `2108`	hi 2108
{{abc}	abc: `bcd`	{abc

Pseudocode to implement in your own language

input:

a string, s
a map string to string, paramMap

output:

a string with param replaced

let ESCCHAR ← '{', ESCCHAREND ← '}', i ← 0, output ← ""
while i < length(s) do
    if s[i] = ESCCHAR then
        let j ← i + 1
        while j <= length(s) and s[j] = ESCCHAR do
            j ← j + 1
            if (j - i) mod 2 = 0 then
                output ← output + ESCCHAR
        if (j - i) mod 2 ≠ 0 then
            let param ← "" (parse parameter key)
            while j < length(s) and s[j] ≠ ESCCHAREND do
                param ← param + s[j]
                j ← j + 1
            if length(param) > 0 then
                output ← output + paramMap[param]
            if j = length(s) then
                return output
            else if s[j = ESCCHAREND then
                j ← j + 1
        i ← j
    output ← output + s[i]
    i ← i + 1
return output