Merge pull request #2 from TheBritishAccent/master

Add nhentai plugin

Author: hkalexling

plugins/nhentai/README.md

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+# nhentai Plugin
+
+This is the Mango plugin for [nhentai](https://nhentai.net/). 
+
+Note that
+
+- All downloaded galleries will be placed in the `nhentai` folder in your library
+
+Maintained by [@TheBritishAccent](https://github.com/TheBritishAccent).

plugins/nhentai/index.js

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+var pageURL;
+var pageCount = 0;
+var ended = false;
+var digits = 0;
+var imageType;
+var totalPages;
+
+const NHENTAI_BASE_URL = 'https://nhentai.net/g/';
+const NHENTAI_IMAGE_URL = "https://i.nhentai.net/galleries/";
+
+
+function listChapters(url) {
+	var html = mango.get(url).body;
+
+	var urlMatch = /\/g\/([a-zA-Z0-9]+)\//.exec(url);
+	var chapterID = urlMatch[1];
+
+	var chapterTitleNode = mango.css(html, '.title')[0];
+
+	if (!chapterTitleNode)
+		mango.raise("Failed to get gallery title");
+
+	var chapterTitle = mango.text(chapterTitleNode);
+
+	var chapters = [{
+		id: chapterID,
+		title: chapterTitle
+	}];
+	return JSON.stringify({
+		chapters: chapters,
+		title: 'nhentai'
+	});
+}
+
+function selectChapter(id) {
+	var url = NHENTAI_BASE_URL + id + '/';
+	var html = mango.get(url).body;
+
+	var chapterTitleNode = mango.css(html, '.title')[0];
+
+	if (!chapterTitleNode) {
+		mango.raise("Failed to get gallery title");
+	}
+
+	var chapterTitle = mango.text(chapterTitleNode);
+
+	var pages = 0;
+	try {
+		var pagesSpan = mango.css(html, '#tags div:nth-last-child(2) span.name')[0];
+		if (!pagesSpan) {
+			throw new Error();
+		}
+		var lengthText = mango.text(pagesSpan);
+		pages = parseInt(lengthText);
+	} catch (e) {
+		mango.raise("Failed to get page count");
+	}
+
+	var firstPageATag = mango.css(html, 'div#thumbnail-container img.lazyload')[0];
+	if (!firstPageATag) {
+		mango.raise("Failed to get URL to the first page");
+	}
+
+	uglyPageURL = mango.attribute(firstPageATag, 'data-src');
+	var pageURLMatch = /\/galleries\/([0-9]+)\/.*?\.(\w*)/.exec(uglyPageURL);
+	
+	pageURL = NHENTAI_IMAGE_URL + pageURLMatch[1] + "/";
+	imageType = pageURLMatch[2];
+
+	ended = false;
+	pageCount = 0;
+	totalPages = pages;
+	digits = Math.floor(Math.log10(pages)) + 1;
+
+	return JSON.stringify({
+		title: chapterTitle,
+		pages: pages
+	});
+}
+
+function nextPage() {
+	if (ended) {
+		return JSON.stringify({});
+	}
+		
+	pageCount += 1;
+
+	if (pageCount === totalPages) {
+		ended = true;
+	}
+
+	var url = pageURL + pageCount + "." + imageType;
+
+	// Not all galleries have uniform file types
+	// Post should return 405 if path exists, 404 otherwise.
+	if (mango.post(url, "").status_code == 404) {
+		url = pageURL + pageCount + "." +  (imageType == "png" ? "jpg" : "png");
+	}
+
+	var filename = pad(pageCount, digits) + '.' + imageType;
+
+	return JSON.stringify({
+		url: url,
+		filename: filename
+	});
+}
+
+// https://stackoverflow.com/a/10073788
+function pad(n, width, z) {
+	z = z || '0';
+	n = n + '';
+	return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
+}

plugins/nhentai/info.json

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+{
+	"id": "nhentai",
+	"title": "nhentai",
+	"author": "TheBritishAccent - [email protected]",
+	"version": "v1.0",
+	"placeholder": "nhentai Gallery URL",
+	"wait_seconds": 1
+}