刺猬猫章节自动下载

打开刺猬猫章节页面时自动保存文章到本地, 支持付费章节。
目前为 2021-11-20 提交的版本。查看最新版本。
换行
// ==UserScript==
// @namespace https://github.com/NateScarlet/Scripts/tree/master/user-script
// @name     刺猬猫章节自动下载
// @description 打开刺猬猫章节页面时自动保存文章到本地, 支持付费章节。
// @version  10
// @grant    none
// @include	 https://www.ciweimao.com/chapter/*
// @run-at   document-idle
// ==/UserScript==
const __name__ = "刺猬猫章节自动下载";
function image2line(img) {
    const canvas = document.createElement("canvas");
    canvas.width = img.naturalWidth;
    canvas.height = img.naturalHeight;
    const ctx = canvas.getContext("2d");
    ctx.drawImage(img, 0, 0);
    return `![${img.alt}](${canvas.toDataURL()} "${img.title}")`;
}
function strip(str) {
    return str.replace(/^\s+|\s+$/g, "");
}
function getElementRootText(element) {
    let ret = "";
    for (const i of element.childNodes) {
        if (i.nodeType === i.TEXT_NODE) {
            ret += i.nodeValue;
        }
    }
    return strip(ret);
}
async function imageUrl2line(url) {
    return new Promise((resolve) => {
        const img = new Image();
        img.onload = () => {
            resolve(image2line(img));
        };
        img.src = url;
    });
}
(async function () {
    const chapter = document.querySelector("#J_BookCnt .chapter").firstChild
        .textContent;
    let lines = [];
    // 收费章节
    for (const i of document.querySelectorAll("#J_BookImage")) {
        const url = i.style["background-image"].match(/(?:url\(")?(.+)(?:"\))?/)[1];
        const line = await imageUrl2line(url);
        lines.push(line);
    }
    // 免费章节
    for (const i of document.querySelectorAll("#J_BookRead p:not(.author_say)")) {
        const line = getElementRootText(i);
        lines.push(line);
        for (const img of i.querySelectorAll("img")) {
            lines.push(image2line(img));
        }
    }
    // 作者说
    for (const i of document.querySelectorAll("p.author_say")) {
        const line = getElementRootText(i);
        lines.push(`    ${line}`);
        for (const img of i.querySelectorAll("img")) {
            lines.push(image2line(img));
        }
    }
    // 下载文件
    lines = lines.filter(i => i.length > 0);
    console.log(`${__name__}: 获取到 ${lines.length} 行`);
    const file = new Blob([`# ${chapter}\n\n`, lines.join("\n\n")], {
        type: "text/markdown",
    });
    const anchor = document.createElement("a");
    anchor.href = URL.createObjectURL(file);
    anchor.download = `${location.pathname.split("/").slice(-1)[0]} ${document.title}.md`;
    anchor.style["display"] = "none";
    document.body.append(anchor);
    anchor.click();
    setTimeout(() => {
        document.body.removeChild(anchor);
        URL.revokeObjectURL(anchor.href);
    }, 0);
})();
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