pdf-tools/util/asciiArt.ts

31 lines
894 B
TypeScript

export async function getAsciiArt(art: string) {
const artFilePath = Deno.env.get("BEARMETAL_ASCII_PATH") ||
getBearmetalAsciiPath();
if (!artFilePath) return art;
let artFileText: string;
if (artFilePath.startsWith("http")) {
artFileText = await fetch(artFilePath).then((res) => res.text());
} else {
artFileText = await Deno.readTextFile(artFilePath);
}
const parserRX = /begin\s+(\w+)\s*\n([\s\S]*?)\s*end\s*/g;
let result = parserRX.exec(artFileText);
while (result !== null) {
const [_, name, artText] = result;
if (name === art) return artText;
result = parserRX.exec(artFileText);
}
return art;
}
function getBearmetalAsciiPath() {
const filenameRX = /asciiarts?\.txt$/;
for (const filename of Deno.readDirSync(".")) {
if (filename.isFile && filenameRX.test(filename.name)) {
return filename.name;
}
}
return null;
}