The Tor Browser / file comparison
comparison: js/src/devtools/jint/sunspider/string-base64.js
js/src/devtools/jint/sunspider/string-base64.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
equal
deleted
inserted
replaced
| -1:000000000000 | 0:0780ae175a01 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 // From: http://lxr.mozilla.org/mozilla/source/extensions/xml-rpc/src/nsXmlRpcClient.js#956 | |
| 6 | |
| 7 /* Convert data (an array of integers) to a Base64 string. */ | |
| 8 var toBase64Table = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; | |
| 9 var base64Pad = '='; | |
| 10 | |
| 11 function toBase64(data) { | |
| 12 var result = ''; | |
| 13 var length = data.length; | |
| 14 var i; | |
| 15 // Convert every three bytes to 4 ascii characters. | |
| 16 /* BEGIN LOOP */ | |
| 17 for (i = 0; i < (length - 2); i += 3) { | |
| 18 result += toBase64Table[data[i] >> 2]; | |
| 19 result += toBase64Table[((data[i] & 0x03) << 4) + (data[i+1] >> 4)]; | |
| 20 result += toBase64Table[((data[i+1] & 0x0f) << 2) + (data[i+2] >> 6)]; | |
| 21 result += toBase64Table[data[i+2] & 0x3f]; | |
| 22 } | |
| 23 /* END LOOP */ | |
| 24 | |
| 25 // Convert the remaining 1 or 2 bytes, pad out to 4 characters. | |
| 26 if (length%3) { | |
| 27 i = length - (length%3); | |
| 28 result += toBase64Table[data[i] >> 2]; | |
| 29 if ((length%3) == 2) { | |
| 30 result += toBase64Table[((data[i] & 0x03) << 4) + (data[i+1] >> 4)]; | |
| 31 result += toBase64Table[(data[i+1] & 0x0f) << 2]; | |
| 32 result += base64Pad; | |
| 33 } else { | |
| 34 result += toBase64Table[(data[i] & 0x03) << 4]; | |
| 35 result += base64Pad + base64Pad; | |
| 36 } | |
| 37 } | |
| 38 | |
| 39 return result; | |
| 40 } | |
| 41 | |
| 42 /* Convert Base64 data to a string */ | |
| 43 var toBinaryTable = [ | |
| 44 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, | |
| 45 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, | |
| 46 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63, | |
| 47 52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1, 0,-1,-1, | |
| 48 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11,12,13,14, | |
| 49 15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1, | |
| 50 -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40, | |
| 51 41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1 | |
| 52 ]; | |
| 53 | |
| 54 function base64ToString(data) { | |
| 55 var result = ''; | |
| 56 var leftbits = 0; // number of bits decoded, but yet to be appended | |
| 57 var leftdata = 0; // bits decoded, but yet to be appended | |
| 58 | |
| 59 // Convert one by one. | |
| 60 /* BEGIN LOOP */ | |
| 61 for (var i = 0; i < data.length; i++) { | |
| 62 var c = toBinaryTable[data.charCodeAt(i) & 0x7f]; | |
| 63 var padding = (data[i] == base64Pad); | |
| 64 // Skip illegal characters and whitespace | |
| 65 if (c == -1) continue; | |
| 66 | |
| 67 // Collect data into leftdata, update bitcount | |
| 68 leftdata = (leftdata << 6) | c; | |
| 69 leftbits += 6; | |
| 70 | |
| 71 // If we have 8 or more bits, append 8 bits to the result | |
| 72 if (leftbits >= 8) { | |
| 73 leftbits -= 8; | |
| 74 // Append if not padding. | |
| 75 if (!padding) | |
| 76 result += String.fromCharCode((leftdata >> leftbits) & 0xff); | |
| 77 leftdata &= (1 << leftbits) - 1; | |
| 78 } | |
| 79 } | |
| 80 /* END LOOP */ | |
| 81 | |
| 82 // If there are any bits left, the base64 string was corrupted | |
| 83 if (leftbits) | |
| 84 throw Components.Exception('Corrupted base64 string'); | |
| 85 | |
| 86 return result; | |
| 87 } | |
| 88 | |
| 89 var str = ""; | |
| 90 | |
| 91 /* BEGIN LOOP */ | |
| 92 for ( var i = 0; i < 8192; i++ ) | |
| 93 str += String.fromCharCode( (25 * Math.random()) + 97 ); | |
| 94 /* END LOOP */ | |
| 95 | |
| 96 /* BEGIN LOOP */ | |
| 97 for ( var i = 8192; i <= 16384; i *= 2 ) { | |
| 98 | |
| 99 var base64; | |
| 100 | |
| 101 base64 = toBase64(str); | |
| 102 base64ToString(base64); | |
| 103 | |
| 104 // Double the string | |
| 105 str += str; | |
| 106 } | |
| 107 /* END LOOP */ | |
| 108 | |
| 109 toBinaryTable = null; |
