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56 lines
1.1 KiB
56 lines
1.1 KiB
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'use strict';
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/**
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* Module dependencies.
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*/
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const resolve = require('path').resolve;
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const assert = require('assert');
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const debug = require('debug')('koa-static');
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const send = require('koa-send');
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/**
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* Expose `serve()`.
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*/
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module.exports = serve;
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/**
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* Serve static files from `root`.
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*
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* @param {String} root
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* @param {Object} [opts]
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* @return {Function}
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* @api public
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*/
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function serve(root, opts) {
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opts = opts || {};
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assert(root, 'root directory is required to serve files');
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// options
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debug('static "%s" %j', root, opts);
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opts.root = resolve(root);
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if (opts.index !== false) opts.index = opts.index || 'index.html';
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if (!opts.defer) {
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return function *serve(next){
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if (this.method == 'HEAD' || this.method == 'GET') {
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if (yield send(this, this.path, opts)) return;
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}
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yield* next;
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};
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}
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return function *serve(next){
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yield* next;
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if (this.method != 'HEAD' && this.method != 'GET') return;
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// response is already handled
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if (this.body != null || this.status != 404) return;
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yield send(this, this.path, opts);
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};
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}
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