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test.js
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test.js
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import PPTX from "nodejs-pptx";
import officegen from "officegen";
import fs from "fs";
// function deleteAllSlides(pptx) {
// const slides = pptx.slides;
// for (let i = slides.length - 1; i >= 0; i--) {
// const rId = slides[i].rId;
// pptx.dropRel(rId);
// slides.splice(i, 1);
// }
// }
async function slide() {
// let pptx = officegen("pptx");
let pptx = new PPTX.Composer();
await pptx.load("uploads/theme.pptx");
await pptx.compose(async (pres) => {
// remove all slides
console.log(pres.presentation);
// pres.removeSlide();
// let newSlide = await pres.addSlide(); // add a new slide
// newSlide.addText((text) => {
// // add some text
// text.value("Hello World");
// });
});
// console.log(Object.keys(pres.presentation.content));
}
function makeSlide() {
let pptx = officegen("pptx");
let slide = pptx.makeTitleSlide(
"Officegen",
"Example to a PowerPoint document"
);
// Pie chart slide example:
slide = pptx.makeNewSlide();
slide.name = "Hello World";
// Change the background color:
slide.back = "000000";
// Declare the default color to use on this slide:
slide.color = "ffffff";
// Basic way to add text string:
slide.addText("Created on the fly using a http server!");
let out = fs.createWriteStream("example2.pptx");
pptx.generate(out);
}
export const parseContent = async (content, pptx) => {
// let content = fs.readFileSync("content.txt", "utf-8");
let lines = content.split("[SLIDEBREAK]");
lines = lines.map((line) => line.trim()).filter((line) => line);
// console.log('lines', extractText(lines[0], "TITLE"));
let slide;
for (let i = 0; i < lines.length; i++) {
if (lines[i].includes("[L_TS]")) {
slide = pptx.makeSecHeadSlide(
extractText(lines[i], "TITLE"),
extractText(lines[i], "SUBTITLE")
);
}
if (lines[i].includes("[L_CS")) {
slide = pptx.makeObjSlide(
extractText(lines[i], "TITLE"),
extractText(lines[i], "CONTENT")
.split("\n")
.map((line, i) => ({
type: "text",
text: line.trim(),
options: {
font_size: i !== 0 ? 16 : 18,
bullet: i !== 0 ? true : false,
breakLine: true,
},
}))
);
// console.log("lines: " + i, extractText(lines[i], "CONTENT"));
// slide.addText(extractText(lines[i], "TITLE"));
// slide.addText(extractText(lines[i], "CONTENT"));
}
if (lines[i].includes("[L_IS]")) {
slide = pptx.makeObjSlide(
extractText(lines[i], "TITLE"),
extractText(lines[i], "CONTENT")
.split("\n")
.map((line, i) => ({
type: "text",
text: line.trim(),
options: {
font_size: i ? 16 : 18,
bullet: i ? true : false,
breakLine: true,
},
}))
);
// slide.addText(extractText(lines[i], "CONTENT"));
// let image = extractText(text, "IMAGE");
// let imageURL = await dlImage(image);
// slide.addImage(imageURL);
}
if (lines[i].includes("[L_THS]")) {
slide = pptx.makeTitleSlide(extractText(lines[i], "TITLE"), "THANK YOU");
}
}
let out = fs.createWriteStream("example3.pptx");
};
function extractText(inputText, tag) {
const regex = new RegExp(`\\[${tag}\\]([\\s\\S]*?)\\[\\/${tag}\\]`, "g");
let match;
if ((match = regex.exec(inputText)) !== null) {
return match[1];
}
return "";
}
async function dlImage(img) {
const url = `https://loremflickr.com/640/480/${img.split(".").at(0)}`;
const image = await fetch(url);
const imageBlog = await image.blob();
// const imageURL = URL.createObjectURL(imageBlog);
const imageURL = imageBlog;
// blob to buffer
const buffer = await imageBlog.arrayBuffer();
// input source must be valid Stream or Buffer instance
const buf = Buffer.from(buffer);
return buf;
}
// parseContent();
// Title Slide: [L_TS]
// Content Slide: [L_CS]
// Image Slide: [L_IS]
// Thanks Slide: [L_THS]