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* Remove ascii parameter.

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* Improve performance.
This commit is contained in:
Chen Yi-Cyuan
2015-01-12 21:26:08 +08:00
parent 5bc2fd9a54
commit ca6b36b0ec
6 changed files with 84 additions and 89 deletions
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src/md5.js
+67 -63
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@@ -1,5 +1,5 @@
/*
* js-md5 v0.1.4
* js-md5 v0.2.0
* https://github.com/emn178/js-md5
*
* Copyright 2014-2015, emn178@gmail.com
@@ -10,62 +10,83 @@
;(function(root, undefined) {
'use strict';
var nodejs = typeof(module) != 'undefined';
if(nodejs) {
var NODE_JS = typeof(module) != 'undefined';
if(NODE_JS) {
root = global;
}
var ARRAY_BUFFER = !root.JS_MD5_TEST && typeof(ArrayBuffer) != 'undefined';
var HEX_CHARS = '0123456789abcdef'.split('');
var blocks = [], buffer8;
if(!root.JS_MD5_TEST && typeof(ArrayBuffer) != 'undefined') {
var buffer = new ArrayBuffer(64);
if(ARRAY_BUFFER) {
var buffer = new ArrayBuffer(68);
buffer8 = new Uint8Array(buffer);
blocks = new Uint32Array(buffer);
}
var md5 = function(message, asciiOnly) {
var h0 = 0x67452301, h1 = 0xEFCDAB89, h2 = 0x98BADCFE, h3 = 0x10325476,
a, b, c, d, bc, da, index = 0, bytes, length, utf8 = false, i;
if(!asciiOnly && /[^\x00-\x7F]/.test(message)) {
utf8 = true;
bytes = getBytesFromUtf8(message);
length = bytes.length;
} else {
length = message.length;
}
var EXTRA = [128, 32768, 8388608, -2147483648];
var SHIFT = [0, 8, 16, 24];
var md5 = function(message) {
var h0, h1, h2, h3, a, b, c, d, bc, da, code,
index = 0, i, start = 0, bytes = 0, length = message.length;
blocks[16] = 0;
do {
blocks[0] = blocks[1] = blocks[2] = blocks[3] =
blocks[0] = blocks[16];
blocks[16] = blocks[1] = blocks[2] = blocks[3] =
blocks[4] = blocks[5] = blocks[6] = blocks[7] =
blocks[8] = blocks[9] = blocks[10] = blocks[11] =
blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
if(utf8) {
if(buffer8) {
for(i = 0;index < length && i < 64;++index, ++i) {
buffer8[i] = bytes[index];
}
} else {
for(i = 0;index < length && i < 64;++index, ++i) {
blocks[i >> 2] |= bytes[index] <<((i & 3) << 3);
if(ARRAY_BUFFER) {
for (i = start;index < length && i < 64; ++index) {
code = message.charCodeAt(index);
if (code < 0x80) {
buffer8[i++] = code;
} else if (code < 0x800) {
buffer8[i++] = 0xc0 | (code >> 6);
buffer8[i++] = 0x80 | (code & 0x3f);
} else if (code < 0xd800 || code >= 0xe000) {
buffer8[i++] = 0xe0 | (code >> 12);
buffer8[i++] = 0x80 | ((code >> 6) & 0x3f);
buffer8[i++] = 0x80 | (code & 0x3f);
} else {
code = 0x10000 + (((code & 0x3ff) << 10) | (message.charCodeAt(++index) & 0x3ff));
buffer8[i++] = 0xf0 | (code >> 18);
buffer8[i++] = 0x80 | ((code >> 12) & 0x3f);
buffer8[i++] = 0x80 | ((code >> 6) & 0x3f);
buffer8[i++] = 0x80 | (code & 0x3f);
}
}
} else {
if(buffer8) {
for(i = 0;index < length && i < 64;++index, ++i) {
buffer8[i] = message.charCodeAt(index);
}
} else {
for(i = 0;index < length && i < 64;++index, ++i) {
blocks[i >> 2] |= message.charCodeAt(index) << ((i & 3) << 3);
for (i = start;index < length && i < 64; ++index) {
code = message.charCodeAt(index);
if (code < 0x80) {
blocks[i >> 2] |= code << SHIFT[i++ & 3];
} else if (code < 0x800) {
blocks[i >> 2] |= (0xc0 | (code >> 6)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
} else if (code < 0xd800 || code >= 0xe000) {
blocks[i >> 2] |= (0xe0 | (code >> 12)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
} else {
code = 0x10000 + (((code & 0x3ff) << 10) | (message.charCodeAt(++index) & 0x3ff));
blocks[i >> 2] |= (0xf0 | (code >> 18)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 12) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
}
}
}
bytes += i - start;
start = i - 64;
if(index == length) {
blocks[i >> 2] |= 0x80 << ((i & 3) << 3);
blocks[14] = length << 3;
blocks[i >> 2] |= EXTRA[i & 3];
blocks[14] = bytes << 3;
}
if(a === undefined) {
if(h0 === undefined) {
a = blocks[0] - 680876937;
a = (a << 7 | a >>> 25) - 271733879 << 0;
d = blocks[1] - 117830708 + ((2004318071 & a) ^ -1732584194);
@@ -226,10 +247,17 @@
b += (d ^ (c | ~a)) + blocks[9] - 343485551;
b = (b << 21 | b >>> 11) + c << 0;
h0 = h0 + a << 0;
h1 = h1 + b << 0;
h2 = h2 + c << 0;
h3 = h3 + d << 0;
if(h0 === undefined) {
h0 = a + 1732584193 << 0;
h1 = b - 271733879<< 0;
h2 = c - 1732584194 << 0;
h3 = d + 271733878 << 0;
} else {
h0 = h0 + a << 0;
h1 = h1 + b << 0;
h2 = h2 + c << 0;
h3 = h3 + d << 0;
}
} while(index < length);
return toHexString(h0) + toHexString(h1) + toHexString(h2) + toHexString(h3);
@@ -244,31 +272,7 @@
return hex;
};
var getBytesFromUtf8 = function(str) {
var bytes = [], index = 0;
for (var i = 0;i < str.length; i++) {
var c = str.charCodeAt(i);
if (c < 0x80) {
bytes[index++] = c;
} else if (c < 0x800) {
bytes[index++] = 0xc0 | (c >> 6);
bytes[index++] = 0x80 | (c & 0x3f);
} else if (c < 0xd800 || c >= 0xe000) {
bytes[index++] = 0xe0 | (c >> 12);
bytes[index++] = 0x80 | ((c >> 6) & 0x3f);
bytes[index++] = 0x80 | (c & 0x3f);
} else {
c = 0x10000 + (((c & 0x3ff) << 10) | (str.charCodeAt(++i) & 0x3ff));
bytes[index++] = 0xf0 | (c >> 18);
bytes[index++] = 0x80 | ((c >> 12) & 0x3f);
bytes[index++] = 0x80 | ((c >> 6) & 0x3f);
bytes[index++] = 0x80 | (c & 0x3f);
}
}
return bytes;
};
if(!root.JS_MD5_TEST && nodejs) {
if(!root.JS_MD5_TEST && NODE_JS) {
module.exports = md5;
} else if(root) {
root.md5 = md5;