/
string.ts
55 lines (52 loc) 路 1.15 KB
/
string.ts
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export function centerAlign(str: string, len: number, space = " ") {
const free = len - str.length;
if (free <= 0) {
return str;
}
const freeLeft = Math.floor(free / 2);
let _str = "";
for (let i = 0; i < len; i++) {
_str +=
i < freeLeft || i >= freeLeft + str.length ? space : str[i - freeLeft];
}
return _str;
}
export function rightAlign(str: string, len: number, space = " ") {
const free = len - str.length;
if (free <= 0) {
return str;
}
let _str = "";
for (let i = 0; i < len; i++) {
_str += i < free ? space : str[i - free];
}
return _str;
}
export function leftAlign(str: string, len: number, space = " ") {
let _str = "";
for (let i = 0; i < len; i++) {
_str += i < str.length ? str[i] : space;
}
return _str;
}
export function align(
alignment: "left" | "right" | "center",
str: string,
len: number,
space = " "
) {
switch (alignment) {
case "left": {
return leftAlign(str, len, space);
}
case "right": {
return rightAlign(str, len, space);
}
case "center": {
return centerAlign(str, len, space);
}
default: {
return str;
}
}
}