Начало наработок

node_modules/bs-snippet-injector/index.js

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+var fs    = require("fs");
+var path  = require("path");
+
+/**
+ * @type {string}
+ */
+var PLUGIN_NAME = "Snippet Injector";
+
+/**
+ * @type
+ */
+var messages = {
+    added: function (path) {
+        return "{green:Snippet added to {cyan:" + path
+    },
+    removed: function (path) {
+        return "{green:Snippet removed from {cyan:" + path
+    },
+    exists: function (path) {
+        return "{green:Snippet already exists in: {cyan:" + path
+    },
+    notFound: function (path) {
+        return "{red:ERROR:} Closing body tag not found in: {cyan:" + path
+    },
+    fileNotFound: function (path) {
+        return "{red:ERROR:} File not found!: {cyan:" + path
+    }
+};
+
+/**
+ * Main export
+ * @type {{name: string, plugin: plugin}}
+ */
+module.exports = {
+
+    "plugin:name": PLUGIN_NAME,
+
+    plugin: function (opts, bs) {
+
+        opts.file = opts.file || "";
+
+        opts.currentFilePath = path.resolve(opts.file);
+
+        opts.logger = bs.getLogger(PLUGIN_NAME);
+        opts.logger.debug("Setting events");
+
+        bs.events.on("service:running", addSnippet.bind(null, bs, opts));
+        bs.events.on("service:exit",  removeSnippet.bind(null, bs, opts));
+    }
+};
+
+
+/**
+ * Add the snippet before a body tag
+ * @param {BrowserSync} bs
+ * @param {Object} opts - plugin specific options
+ */
+function addSnippet(bs, opts) {
+
+    var currentFilePath = opts.currentFilePath;
+
+    opts.logger.debug("Reading the file: %s", currentFilePath);
+
+    var read;
+
+    try {
+        read = fs.readFileSync(currentFilePath, "utf8");
+    } catch (e) {
+        opts.errored = true;
+        return opts.logger.info(messages.fileNotFound(path.basename(currentFilePath)));
+    }
+
+    var found = false;
+
+    if (read.indexOf(bs.options.get("snippet")) > -1) {
+        opts.logger.info(messages.exists(currentFilePath));
+        return;
+    }
+
+    var modded = read.replace(/<\/body>(?![\s\S]*<\/body>)/, function () {
+        opts.currentSnippet = wrap(bs.options.get("snippet")) + "\n" + arguments[0];
+        found = true;
+        return opts.currentSnippet;
+    });
+
+    if (found) {
+        opts.logger.debug("Writing the file: %s", currentFilePath);
+        fs.writeFileSync(currentFilePath, modded);
+        opts.logger.info(messages.added(path.basename(currentFilePath)));
+    } else {
+        opts.logger.info(messages.notFound(path.basename(currentFilePath)));
+    }
+}
+
+/**
+ * @param item snippet
+ * @returns {string}
+ */
+function wrap (item) {
+    return "<!-- BS:SNIPPET-->" + item + "<!-- BS:SNIPPET:END-->";
+}
+
+/**
+ * @param {BrowserSync} bs
+ * @param {Object} opts - plugin specific options
+ */
+function removeSnippet(bs, opts) {
+
+    if (opts.errored) {
+        return;
+    }
+
+    var read   = fs.readFileSync(opts.currentFilePath, "utf8");
+    var modded = read.replace(opts.currentSnippet, function () {
+        return "</body>";
+    });
+    fs.writeFileSync(opts.currentFilePath, modded);
+    opts.logger.info(messages.removed(path.basename(opts.currentFilePath)));
+}