styled-string-builder
Version:
String Styler class based on a builder design pattern
129 lines (127 loc) • 15.6 kB
JavaScript
import { AnsiReset, styles } from "./constants";
/**
* @description Applies a basic ANSI color code to text.
* @summary This function takes a string, an ANSI color code number, and an optional background flag.
* It returns the text wrapped in the appropriate ANSI escape codes for either foreground or background coloring.
* This function is used for basic 16-color ANSI formatting.
*
* @param {string} text - The text to be colored.
* @param {number} n - The ANSI color code number.
* @param {boolean} [bg=false] - If true, applies the color to the background instead of the foreground.
* @return {string} The text wrapped in ANSI color codes.
*
* @function colorizeANSI
* @memberOf module:@StyledString
*/
export function colorizeANSI(text, n, bg = false) {
if (isNaN(n)) {
console.warn(`Invalid color number on the ANSI scale: ${n}. ignoring...`);
return text;
}
if (bg && ((n > 30 && n <= 40)
|| (n > 90 && n <= 100))) {
n = n + 10;
}
return `\x1b[${n}m${text}${AnsiReset}`;
}
/**
* @description Applies a 256-color ANSI code to text.
* @summary This function takes a string and a color number (0-255) and returns the text
* wrapped in ANSI escape codes for either foreground or background coloring.
*
* @param {string} text - The text to be colored.
* @param {number} n - The color number (0-255).
* @param {boolean} [bg=false] - If true, applies the color to the background instead of the foreground.
* @return {string} The text wrapped in ANSI color codes.
*
* @function colorize256
* @memberOf module:@StyledString
*/
export function colorize256(text, n, bg = false) {
if (isNaN(n)) {
console.warn(`Invalid color number on the 256 scale: ${n}. ignoring...`);
return text;
}
if (n < 0 || n > 255) {
console.warn(`Invalid color number on the 256 scale: ${n}. ignoring...`);
return text;
}
return `\x1b[${bg ? 48 : 38};5;${n}m${text}${AnsiReset}`;
}
/**
* @description Applies an RGB color ANSI code to text.
* @summary This function takes a string and RGB color values (0-255 for each component)
* and returns the text wrapped in ANSI escape codes for either foreground or background coloring.
*
* @param {string} text - The text to be colored.
* @param {number} r - The red component of the color (0-255).
* @param {number} g - The green component of the color (0-255).
* @param {number} b - The blue component of the color (0-255).
* @param {boolean} [bg=false] - If true, applies the color to the background instead of the foreground.
* @return {string} The text wrapped in ANSI color codes.
*
* @function colorizeRGB
* @memberOf module:StyledString
*/
export function colorizeRGB(text, r, g, b, bg = false) {
if (isNaN(r) || isNaN(g) || isNaN(b)) {
console.warn(`Invalid RGB color values: r=${r}, g=${g}, b=${b}. Ignoring...`);
return text;
}
if ([r, g, b].some(v => v < 0 || v > 255)) {
console.warn(`Invalid RGB color values: r=${r}, g=${g}, b=${b}. Ignoring...`);
return text;
}
return `\x1b[${bg ? 48 : 38};2;${r};${g};${b}m${text}${AnsiReset}`;
}
/**
* @description Applies an ANSI style code to text.
* @summary This function takes a string and a style code (either a number or a key from the styles object)
* and returns the text wrapped in the appropriate ANSI escape codes for that style.
*
* @param {string} text - The text to be styled.
* @param {number | string} n - The style code or style name.
* @return {string} The text wrapped in ANSI style codes.
*
* @function applyStyle
* @memberOf module:StyledString
*/
export function applyStyle(text, n) {
const styleCode = typeof n === "number" ? n : styles[n];
return `\x1b[${styleCode}m${text}${AnsiReset}`;
}
/**
* @description Removes all ANSI formatting codes from text.
* @summary This function takes a string that may contain ANSI escape codes for formatting
* and returns a new string with all such codes removed, leaving only the plain text content.
* It uses a regular expression to match and remove ANSI escape sequences.
*
* @param {string} text - The text potentially containing ANSI formatting codes.
* @return {string} The input text with all ANSI formatting codes removed.
*
* @function clear
* @memberOf module:StyledString
*/
export function clear(text) {
// Regular expression to match ANSI escape codes
// eslint-disable-next-line no-control-regex
const ansiRegex = /\x1B(?:[@-Z\\-_]|\[[0-?]*[ -/]*[@-~])/g;
return text.replace(ansiRegex, '');
}
/**
* @description Applies raw ANSI escape codes to text.
* @summary This function takes a string and a raw ANSI escape code, and returns the text
* wrapped in the provided raw ANSI code and the reset code. This allows for applying custom
* or complex ANSI formatting that may not be covered by other utility functions.
*
* @param {string} text - The text to be formatted.
* @param {string} raw - The raw ANSI escape code to be applied.
* @return {string} The text wrapped in the raw ANSI code and the reset code.
*
* @function raw
* @memberOf module:StyledString
*/
export function raw(text, raw) {
return `${raw}${text}${AnsiReset}`;
}
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48 : 38};5;${n}m${text}${AnsiReset}`;\n}\n\n/**\n * @description Applies an RGB color ANSI code to text.\n * @summary This function takes a string and RGB color values (0-255 for each component)\n * and returns the text wrapped in ANSI escape codes for either foreground or background coloring.\n *\n * @param {string} text - The text to be colored.\n * @param {number} r - The red component of the color (0-255).\n * @param {number} g - The green component of the color (0-255).\n * @param {number} b - The blue component of the color (0-255).\n * @param {boolean} [bg=false] - If true, applies the color to the background instead of the foreground.\n * @return {string} The text wrapped in ANSI color codes.\n *\n * @function colorizeRGB\n * @memberOf module:StyledString\n */\nexport function colorizeRGB(text: string, r: number, g: number, b: number, bg = false) {\n  if (isNaN(r) || isNaN(g) || isNaN(b)){\n    console.warn(`Invalid RGB color values: r=${r}, g=${g}, b=${b}. Ignoring...`);\n    return text;\n  }\n  if ([r, g, b].some(v => v < 0 || v > 255)) {\n    console.warn(`Invalid RGB color values: r=${r}, g=${g}, b=${b}. Ignoring...`);\n    return text;\n  }\n  return `\\x1b[${bg ? 48 : 38};2;${r};${g};${b}m${text}${AnsiReset}`;\n}\n\n/**\n * @description Applies an ANSI style code to text.\n * @summary This function takes a string and a style code (either a number or a key from the styles object)\n * and returns the text wrapped in the appropriate ANSI escape codes for that style.\n *\n * @param {string} text - The text to be styled.\n * @param {number | string} n - The style code or style name.\n * @return {string} The text wrapped in ANSI style codes.\n *\n * @function applyStyle\n * @memberOf module:StyledString\n */\nexport function applyStyle(text: string, n: number | keyof typeof styles): string {\n  const styleCode = typeof n === \"number\" ? n : styles[n];\n  return `\\x1b[${styleCode}m${text}${AnsiReset}`;\n}\n\n/**\n * @description Removes all ANSI formatting codes from text.\n * @summary This function takes a string that may contain ANSI escape codes for formatting\n * and returns a new string with all such codes removed, leaving only the plain text content.\n * It uses a regular expression to match and remove ANSI escape sequences.\n *\n * @param {string} text - The text potentially containing ANSI formatting codes.\n * @return {string} The input text with all ANSI formatting codes removed.\n *\n * @function clear\n * @memberOf module:StyledString\n */\nexport function clear(text: string): string {\n  // Regular expression to match ANSI escape codes\n  // eslint-disable-next-line no-control-regex\n  const ansiRegex = /\\x1B(?:[@-Z\\\\-_]|\\[[0-?]*[ -/]*[@-~])/g;\n  return text.replace(ansiRegex, '');\n}\n\n/**\n * @description Applies raw ANSI escape codes to text.\n * @summary This function takes a string and a raw ANSI escape code, and returns the text\n * wrapped in the provided raw ANSI code and the reset code. This allows for applying custom\n * or complex ANSI formatting that may not be covered by other utility functions.\n *\n * @param {string} text - The text to be formatted.\n * @param {string} raw - The raw ANSI escape code to be applied.\n * @return {string} The text wrapped in the raw ANSI code and the reset code.\n *\n * @function raw\n * @memberOf module:StyledString\n */\nexport function raw(text: string, raw: string): string {\n  return `${raw}${text}${AnsiReset}`;\n}"]}