Javascript 在javascript中将对话UTF-8编码为1251

Encoding conversation UTF-8 to 1251 in javascript

提问by lak-b

I need to convert string in UTF-8 to byte array in 1251 codepage in JavaScript. Google says nothing useful. Help :)

我需要将 UTF-8 中的字符串转换为 JavaScript 中 1251 代码页中的字节数组。谷歌说没有任何用处。帮助 ：）

EDIT: What is it for.

编辑：它是做什么用的。

We have server and client. Server has userpasswords hased with SHA512 and 1251 codepage. Client (web browser) has to hash passwords (provided by user in plain text) with SHA512 and transmit it to the server. The problem is: browser works in UTF-8 encoding, and of course SHA512 in UFT-8 is not the same as SHA512 in 1251. Any Ideas?

我们有服务器和客户端。服务器具有使用 SHA512 和 1251 代码页的用户密码。客户端（Web 浏览器）必须使用 SHA512 散列密码（由用户以纯文本形式提供）并将其传输到服务器。问题是：浏览器使用 UTF-8 编码，当然 UFT-8 中的 SHA512 与 1251 中的 SHA512 不同。有什么想法吗？

EDIT2: got it!:)

EDIT2：明白了！:)

//utf8 to 1251 converter (1 byte format, RU/EN support only + any other symbols) by drgluck
function utf8_decode (aa) {
    var bb = '', c = 0;
    for (var i = 0; i < aa.length; i++) {
        c = aa.charCodeAt(i);
        if (c > 127) {
            if (c > 1024) {
                if (c == 1025) {
                    c = 1016;
                } else if (c == 1105) {
                    c = 1032;
                }
                bb += String.fromCharCode(c - 848);
            }
        } else {
            bb += aa.charAt(i);
        }
    }
    return bb;
} 

Usage with SHA512 implementation by Paul Johnston (http://pajhome.org.uk/crypt/md5/sha512.html)

Paul Johnston ( http://pajhome.org.uk/crypt/md5/sha512.html)使用 SHA512 实现

...
return rstr2hex(rstr_sha512(utf8_decode(input)));

回答by cryo

This encodes the Unicode codepoints in JavaScript to windows-1251:

这将 JavaScript 中的 Unicode 代码点编码为 windows-1251：

var DMap = {0: 0, 1: 1, 2: 2, 3: 3, 4: 4, 5: 5, 6: 6, 7: 7, 8: 8, 9: 9, 10: 10, 11: 11, 12: 12, 13: 13, 14: 14, 15: 15, 16: 16, 17: 17, 18: 18, 19: 19, 20: 20, 21: 21, 22: 22, 23: 23, 24: 24, 25: 25, 26: 26, 27: 27, 28: 28, 29: 29, 30: 30, 31: 31, 32: 32, 33: 33, 34: 34, 35: 35, 36: 36, 37: 37, 38: 38, 39: 39, 40: 40, 41: 41, 42: 42, 43: 43, 44: 44, 45: 45, 46: 46, 47: 47, 48: 48, 49: 49, 50: 50, 51: 51, 52: 52, 53: 53, 54: 54, 55: 55, 56: 56, 57: 57, 58: 58, 59: 59, 60: 60, 61: 61, 62: 62, 63: 63, 64: 64, 65: 65, 66: 66, 67: 67, 68: 68, 69: 69, 70: 70, 71: 71, 72: 72, 73: 73, 74: 74, 75: 75, 76: 76, 77: 77, 78: 78, 79: 79, 80: 80, 81: 81, 82: 82, 83: 83, 84: 84, 85: 85, 86: 86, 87: 87, 88: 88, 89: 89, 90: 90, 91: 91, 92: 92, 93: 93, 94: 94, 95: 95, 96: 96, 97: 97, 98: 98, 99: 99, 100: 100, 101: 101, 102: 102, 103: 103, 104: 104, 105: 105, 106: 106, 107: 107, 108: 108, 109: 109, 110: 110, 111: 111, 112: 112, 113: 113, 114: 114, 115: 115, 116: 116, 117: 117, 118: 118, 119: 119, 120: 120, 121: 121, 122: 122, 123: 123, 124: 124, 125: 125, 126: 126, 127: 127, 1027: 129, 8225: 135, 1046: 198, 8222: 132, 1047: 199, 1168: 165, 1048: 200, 1113: 154, 1049: 201, 1045: 197, 1050: 202, 1028: 170, 160: 160, 1040: 192, 1051: 203, 164: 164, 166: 166, 167: 167, 169: 169, 171: 171, 172: 172, 173: 173, 174: 174, 1053: 205, 176: 176, 177: 177, 1114: 156, 181: 181, 182: 182, 183: 183, 8221: 148, 187: 187, 1029: 189, 1056: 208, 1057: 209, 1058: 210, 8364: 136, 1112: 188, 1115: 158, 1059: 211, 1060: 212, 1030: 178, 1061: 213, 1062: 214, 1063: 215, 1116: 157, 1064: 216, 1065: 217, 1031: 175, 1066: 218, 1067: 219, 1068: 220, 1069: 221, 1070: 222, 1032: 163, 8226: 149, 1071: 223, 1072: 224, 8482: 153, 1073: 225, 8240: 137, 1118: 162, 1074: 226, 1110: 179, 8230: 133, 1075: 227, 1033: 138, 1076: 228, 1077: 229, 8211: 150, 1078: 230, 1119: 159, 1079: 231, 1042: 194, 1080: 232, 1034: 140, 1025: 168, 1081: 233, 1082: 234, 8212: 151, 1083: 235, 1169: 180, 1084: 236, 1052: 204, 1085: 237, 1035: 142, 1086: 238, 1087: 239, 1088: 240, 1089: 241, 1090: 242, 1036: 141, 1041: 193, 1091: 243, 1092: 244, 8224: 134, 1093: 245, 8470: 185, 1094: 246, 1054: 206, 1095: 247, 1096: 248, 8249: 139, 1097: 249, 1098: 250, 1044: 196, 1099: 251, 1111: 191, 1055: 207, 1100: 252, 1038: 161, 8220: 147, 1101: 253, 8250: 155, 1102: 254, 8216: 145, 1103: 255, 1043: 195, 1105: 184, 1039: 143, 1026: 128, 1106: 144, 8218: 130, 1107: 131, 8217: 146, 1108: 186, 1109: 190}

function UnicodeToWin1251(s) {
    var L = []
    for (var i=0; i<s.length; i++) {
        var ord = s.charCodeAt(i)
        if (!(ord in DMap))
            throw "Character "+s.charAt(i)+" isn't supported by win1251!"
        L.push(String.fromCharCode(DMap[ord]))
    }
    return L.join('')
}

JavaScript stores each character as raw Unicode codepoints, so the above should work before getting the hash using SHA512.

JavaScript 将每个字符存储为原始 Unicode 代码点，因此在使用 SHA512 获取哈希之前，上述内容应该可以工作。

回答by YOU

When you access string in javascript, its not even UTF-8 encoding anymore (browsers automatically decode it to built-in javascript encoding OR the one you specified when you load javascript or text, OR default browser encoding), so you need to convert it to UTF-8 first and then convert to cp1251.

当您在 javascript 中访问字符串时，它甚至不再是 UTF-8 编码（浏览器会自动将其解码为内置 javascript 编码或您在加载 javascript 或文本时指定的编码，或默认浏览器编码），因此您需要对其进行转换首先转换为 UTF-8，然后转换为 cp1251。

Take a look at thisunicode encoding converter, I hope you'll get some ideas from that.

看看这个unicode 编码转换器，我希望你能从中得到一些想法。

回答by NickKolok

If you should guess encoding, for Russian text you can use this

如果您应该猜测编码，对于俄语文本，您可以使用它

回答by gordinmitya

In case if someone needs to put encoded string to url modify code from previous answer to

如果有人需要将编码字符串放入 url，请修改先前答案中的代码

var DMap = {0: 0, 1: 1, 2: 2, 3: 3, 4: 4, 5: 5, 6: 6, 7: 7, 8: 8, 9: 9, 10: 10, 11: 11, 12: 12, 13: 13, 14: 14, 15: 15, 16: 16, 17: 17, 18: 18, 19: 19, 20: 20, 21: 21, 22: 22, 23: 23, 24: 24, 25: 25, 26: 26, 27: 27, 28: 28, 29: 29, 30: 30, 31: 31, 32: 32, 33: 33, 34: 34, 35: 35, 36: 36, 37: 37, 38: 38, 39: 39, 40: 40, 41: 41, 42: 42, 43: 43, 44: 44, 45: 45, 46: 46, 47: 47, 48: 48, 49: 49, 50: 50, 51: 51, 52: 52, 53: 53, 54: 54, 55: 55, 56: 56, 57: 57, 58: 58, 59: 59, 60: 60, 61: 61, 62: 62, 63: 63, 64: 64, 65: 65, 66: 66, 67: 67, 68: 68, 69: 69, 70: 70, 71: 71, 72: 72, 73: 73, 74: 74, 75: 75, 76: 76, 77: 77, 78: 78, 79: 79, 80: 80, 81: 81, 82: 82, 83: 83, 84: 84, 85: 85, 86: 86, 87: 87, 88: 88, 89: 89, 90: 90, 91: 91, 92: 92, 93: 93, 94: 94, 95: 95, 96: 96, 97: 97, 98: 98, 99: 99, 100: 100, 101: 101, 102: 102, 103: 103, 104: 104, 105: 105, 106: 106, 107: 107, 108: 108, 109: 109, 110: 110, 111: 111, 112: 112, 113: 113, 114: 114, 115: 115, 116: 116, 117: 117, 118: 118, 119: 119, 120: 120, 121: 121, 122: 122, 123: 123, 124: 124, 125: 125, 126: 126, 127: 127, 1027: 129, 8225: 135, 1046: 198, 8222: 132, 1047: 199, 1168: 165, 1048: 200, 1113: 154, 1049: 201, 1045: 197, 1050: 202, 1028: 170, 160: 160, 1040: 192, 1051: 203, 164: 164, 166: 166, 167: 167, 169: 169, 171: 171, 172: 172, 173: 173, 174: 174, 1053: 205, 176: 176, 177: 177, 1114: 156, 181: 181, 182: 182, 183: 183, 8221: 148, 187: 187, 1029: 189, 1056: 208, 1057: 209, 1058: 210, 8364: 136, 1112: 188, 1115: 158, 1059: 211, 1060: 212, 1030: 178, 1061: 213, 1062: 214, 1063: 215, 1116: 157, 1064: 216, 1065: 217, 1031: 175, 1066: 218, 1067: 219, 1068: 220, 1069: 221, 1070: 222, 1032: 163, 8226: 149, 1071: 223, 1072: 224, 8482: 153, 1073: 225, 8240: 137, 1118: 162, 1074: 226, 1110: 179, 8230: 133, 1075: 227, 1033: 138, 1076: 228, 1077: 229, 8211: 150, 1078: 230, 1119: 159, 1079: 231, 1042: 194, 1080: 232, 1034: 140, 1025: 168, 1081: 233, 1082: 234, 8212: 151, 1083: 235, 1169: 180, 1084: 236, 1052: 204, 1085: 237, 1035: 142, 1086: 238, 1087: 239, 1088: 240, 1089: 241, 1090: 242, 1036: 141, 1041: 193, 1091: 243, 1092: 244, 8224: 134, 1093: 245, 8470: 185, 1094: 246, 1054: 206, 1095: 247, 1096: 248, 8249: 139, 1097: 249, 1098: 250, 1044: 196, 1099: 251, 1111: 191, 1055: 207, 1100: 252, 1038: 161, 8220: 147, 1101: 253, 8250: 155, 1102: 254, 8216: 145, 1103: 255, 1043: 195, 1105: 184, 1039: 143, 1026: 128, 1106: 144, 8218: 130, 1107: 131, 8217: 146, 1108: 186, 1109: 190}
function UnicodeToWin1251(s) {
    var L = []
    for (var i=0; i<s.length; i++) {
        var ord = s.charCodeAt(i)
        if (!(ord in DMap))
            throw "Character "+s.charAt(i)+" isn't supported by win1251!"
        L.push('%' + DMap[ord].toString(16));
    }
    return L.join('')
}