1 |
|
2 |
|
3 |
|
4 |
|
5 |
|
6 |
|
7 |
|
8 | 'use strict';
|
9 |
|
10 |
|
11 |
|
12 |
|
13 |
|
14 |
|
15 | var contentDisposition = require('content-disposition');
|
16 | var contentType = require('content-type');
|
17 | var deprecate = require('depd')('express');
|
18 | var flatten = require('array-flatten');
|
19 | var mime = require('send').mime;
|
20 | var basename = require('path').basename;
|
21 | var etag = require('etag');
|
22 | var proxyaddr = require('proxy-addr');
|
23 | var qs = require('qs');
|
24 | var querystring = require('querystring');
|
25 |
|
26 |
|
27 |
|
28 |
|
29 |
|
30 |
|
31 |
|
32 |
|
33 |
|
34 |
|
35 | exports.etag = function (body, encoding) {
|
36 | var buf = !Buffer.isBuffer(body)
|
37 | ? new Buffer(body, encoding)
|
38 | : body;
|
39 |
|
40 | return etag(buf, {weak: false});
|
41 | };
|
42 |
|
43 |
|
44 |
|
45 |
|
46 |
|
47 |
|
48 |
|
49 |
|
50 |
|
51 |
|
52 | exports.wetag = function wetag(body, encoding){
|
53 | var buf = !Buffer.isBuffer(body)
|
54 | ? new Buffer(body, encoding)
|
55 | : body;
|
56 |
|
57 | return etag(buf, {weak: true});
|
58 | };
|
59 |
|
60 |
|
61 |
|
62 |
|
63 |
|
64 |
|
65 |
|
66 |
|
67 |
|
68 | exports.isAbsolute = function(path){
|
69 | if ('/' === path[0]) return true;
|
70 | if (':' === path[1] && ('\\' === path[2] || '/' === path[2])) return true;
|
71 | if ('\\\\' === path.substring(0, 2)) return true;
|
72 | };
|
73 |
|
74 |
|
75 |
|
76 |
|
77 |
|
78 |
|
79 |
|
80 |
|
81 |
|
82 | exports.flatten = deprecate.function(flatten,
|
83 | 'utils.flatten: use array-flatten npm module instead');
|
84 |
|
85 |
|
86 |
|
87 |
|
88 |
|
89 |
|
90 |
|
91 |
|
92 |
|
93 | exports.normalizeType = function(type){
|
94 | return ~type.indexOf('/')
|
95 | ? acceptParams(type)
|
96 | : { value: mime.lookup(type), params: {} };
|
97 | };
|
98 |
|
99 |
|
100 |
|
101 |
|
102 |
|
103 |
|
104 |
|
105 |
|
106 |
|
107 | exports.normalizeTypes = function(types){
|
108 | var ret = [];
|
109 |
|
110 | for (var i = 0; i < types.length; ++i) {
|
111 | ret.push(exports.normalizeType(types[i]));
|
112 | }
|
113 |
|
114 | return ret;
|
115 | };
|
116 |
|
117 |
|
118 |
|
119 |
|
120 |
|
121 |
|
122 |
|
123 |
|
124 |
|
125 |
|
126 | exports.contentDisposition = deprecate.function(contentDisposition,
|
127 | 'utils.contentDisposition: use content-disposition npm module instead');
|
128 |
|
129 |
|
130 |
|
131 |
|
132 |
|
133 |
|
134 |
|
135 |
|
136 |
|
137 |
|
138 |
|
139 | function acceptParams(str, index) {
|
140 | var parts = str.split(/ *; */);
|
141 | var ret = { value: parts[0], quality: 1, params: {}, originalIndex: index };
|
142 |
|
143 | for (var i = 1; i < parts.length; ++i) {
|
144 | var pms = parts[i].split(/ *= */);
|
145 | if ('q' === pms[0]) {
|
146 | ret.quality = parseFloat(pms[1]);
|
147 | } else {
|
148 | ret.params[pms[0]] = pms[1];
|
149 | }
|
150 | }
|
151 |
|
152 | return ret;
|
153 | }
|
154 |
|
155 |
|
156 |
|
157 |
|
158 |
|
159 |
|
160 |
|
161 |
|
162 |
|
163 | exports.compileETag = function(val) {
|
164 | var fn;
|
165 |
|
166 | if (typeof val === 'function') {
|
167 | return val;
|
168 | }
|
169 |
|
170 | switch (val) {
|
171 | case true:
|
172 | fn = exports.wetag;
|
173 | break;
|
174 | case false:
|
175 | break;
|
176 | case 'strong':
|
177 | fn = exports.etag;
|
178 | break;
|
179 | case 'weak':
|
180 | fn = exports.wetag;
|
181 | break;
|
182 | default:
|
183 | throw new TypeError('unknown value for etag function: ' + val);
|
184 | }
|
185 |
|
186 | return fn;
|
187 | }
|
188 |
|
189 |
|
190 |
|
191 |
|
192 |
|
193 |
|
194 |
|
195 |
|
196 |
|
197 | exports.compileQueryParser = function compileQueryParser(val) {
|
198 | var fn;
|
199 |
|
200 | if (typeof val === 'function') {
|
201 | return val;
|
202 | }
|
203 |
|
204 | switch (val) {
|
205 | case true:
|
206 | fn = querystring.parse;
|
207 | break;
|
208 | case false:
|
209 | fn = newObject;
|
210 | break;
|
211 | case 'extended':
|
212 | fn = parseExtendedQueryString;
|
213 | break;
|
214 | case 'simple':
|
215 | fn = querystring.parse;
|
216 | break;
|
217 | default:
|
218 | throw new TypeError('unknown value for query parser function: ' + val);
|
219 | }
|
220 |
|
221 | return fn;
|
222 | }
|
223 |
|
224 |
|
225 |
|
226 |
|
227 |
|
228 |
|
229 |
|
230 |
|
231 |
|
232 | exports.compileTrust = function(val) {
|
233 | if (typeof val === 'function') return val;
|
234 |
|
235 | if (val === true) {
|
236 |
|
237 | return function(){ return true };
|
238 | }
|
239 |
|
240 | if (typeof val === 'number') {
|
241 |
|
242 | return function(a, i){ return i < val };
|
243 | }
|
244 |
|
245 | if (typeof val === 'string') {
|
246 |
|
247 | val = val.split(/ *, */);
|
248 | }
|
249 |
|
250 | return proxyaddr.compile(val || []);
|
251 | }
|
252 |
|
253 |
|
254 |
|
255 |
|
256 |
|
257 |
|
258 |
|
259 |
|
260 |
|
261 |
|
262 | exports.setCharset = function setCharset(type, charset) {
|
263 | if (!type || !charset) {
|
264 | return type;
|
265 | }
|
266 |
|
267 |
|
268 | var parsed = contentType.parse(type);
|
269 |
|
270 |
|
271 | parsed.parameters.charset = charset;
|
272 |
|
273 |
|
274 | return contentType.format(parsed);
|
275 | };
|
276 |
|
277 |
|
278 |
|
279 |
|
280 |
|
281 |
|
282 |
|
283 |
|
284 | function parseExtendedQueryString(str) {
|
285 | return qs.parse(str, {
|
286 | allowPrototypes: true
|
287 | });
|
288 | }
|
289 |
|
290 |
|
291 |
|
292 |
|
293 |
|
294 |
|
295 |
|
296 |
|
297 | function newObject() {
|
298 | return {};
|
299 | }
|