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// https://github.com/Automattic/node-canvas/blob/b3e7df319c045c1dc74e390f4b3af161304c9c55/lib/parse-font.js
"use strict";
/** * Font RegExp helpers. */
const weights = "bold|bolder|lighter|[1-9]00";const styles = "italic|oblique";const variants = "small-caps";const stretches =  "ultra-condensed|extra-condensed|condensed|semi-condensed|semi-expanded|expanded|extra-expanded|ultra-expanded";const units = "px|pt|pc|in|cm|mm|%|em|ex|ch|rem|q";const string = "'([^']+)'|\"([^\"]+)\"|[\\w\\s-]+";
// [ [ <‘font-style’> || <font-variant-css21> || <‘font-weight’> || <‘font-stretch’> ]?//    <‘font-size’> [ / <‘line-height’> ]? <‘font-family’> ]// https://drafts.csswg.org/css-fonts-3/#font-propconst weightRe = new RegExp(`(${weights}) +`, "i");const styleRe = new RegExp(`(${styles}) +`, "i");const variantRe = new RegExp(`(${variants}) +`, "i");const stretchRe = new RegExp(`(${stretches}) +`, "i");const sizeFamilyRe = new RegExp(  `([\\d\\.]+)(${units}) *((?:${string})( *, *(?:${string}))*)`,);
/** * Cache font parsing. */
// deno-lint-ignore no-explicit-anyconst cache: Record<string, any> = {};
const defaultHeight = 16; // pt, common browser default
/** * Parse font `str`. */// deno-lint-ignore no-explicit-anyexport function parseFont(str: string): any {  // Cached  if (cache[str]) return cache[str];
  // Try for required properties first.  const sizeFamily = sizeFamilyRe.exec(str);  if (!sizeFamily) return; // invalid
  // Default values and required properties  // deno-lint-ignore no-explicit-any  const font: any = {    weight: "normal",    style: "normal",    stretch: "normal",    variant: "normal",    size: parseFloat(sizeFamily[1]),    unit: sizeFamily[2],    family: sizeFamily[3].replace(/["']/g, "").replace(/ *, */g, ","),  };
  // Optional, unordered properties.  let weight, style, variant, stretch;  // Stop search at `sizeFamily.index`  const substr = str.substring(0, sizeFamily.index);  if ((weight = weightRe.exec(substr))) font.weight = weight[1];  if ((style = styleRe.exec(substr))) font.style = style[1];  if ((variant = variantRe.exec(substr))) font.variant = variant[1];  if ((stretch = stretchRe.exec(substr))) font.stretch = stretch[1];
  // Convert to device units. (`font.unit` is the original unit)  // TODO: ch, ex  switch (font.unit) {    case "pt":      font.size /= 0.75;      break;    case "pc":      font.size *= 16;      break;    case "in":      font.size *= 96;      break;    case "cm":      font.size *= 96.0 / 2.54;      break;    case "mm":      font.size *= 96.0 / 25.4;      break;    case "%":      // TODO disabled because existing unit tests assume 100      // font.size *= defaultHeight / 100 / 0.75      break;    case "em":    case "rem":      font.size *= defaultHeight / 0.75;      break;    case "q":      font.size *= 96 / 25.4 / 4;      break;  }
  switch (font.weight) {    case "lighter":    case "100":      font.weight = 100;      break;    case "200":      font.weight = 200;      break;    case "300":      font.weight = 300;      break;    case "normal":    case "400":      font.weight = 400;      break;    case "500":      font.weight = 500;      break;    case "600":      font.weight = 600;      break;    case "bold":    case "bolder":    case "700":      font.weight = 700;      break;    case "800":      font.weight = 800;      break;    case "900":      font.weight = 900;      break;    default:      font.weight = 400;      break;  }
  switch (font.style) {    case "normal":      font.style = 0;      break;    case "italic":      font.style = 1;      break;    case "oblique":      font.style = 2;      break;  }
  switch (font.stretch) {    case "ultra-condensed":    case "50%":      font.stretch = 1;      break;    case "extra-condensed":    case "62.5%":      font.stretch = 2;      break;    case "condensed":    case "75%":      font.stretch = 3;      break;    case "semi-condensed":    case "87.5%":      font.stretch = 4;      break;    case "normal":    case "100%":      font.stretch = 5;      break;    case "semi-expanded":    case "112.5%":      font.stretch = 6;      break;    case "expanded":    case "125%":      font.stretch = 7;      break;    case "extra-expanded":    case "150%":      font.stretch = 8;      break;    case "ultra-expanded":    case "200%":      font.stretch = 9;  }
  switch (font.variant) {    case "normal":      font.variant = 0;      break;    case "small-caps":      font.variant = 1;      break;  }
  return (cache[str] = font);}