58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
|
var table = require('../').table;
|
||
|
|
|
||
|
|
function sheetjs1(utf8) {
|
||
|
|
var buf = Buffer(utf8);
|
||
|
|
var a = 1, b = 0, L = buf.length, M;
|
||
|
|
for(var i = 0; i < L;) {
|
||
|
|
M = Math.min(L-i, 3854);
|
||
|
|
for(;M>0;--M) {
|
||
|
|
a += buf[i++];
|
||
|
|
b += a;
|
||
|
|
}
|
||
|
|
a %= 65521;
|
||
|
|
b %= 65521;
|
||
|
|
}
|
||
|
|
return b > 32767 ? (((b - 65536) * 65536) | a) : ((b * 65536) | a);
|
||
|
|
}
|
||
|
|
|
||
|
|
function sheetjs2(utf8) {
|
||
|
|
var a = 1, b = 0, L = utf8.length, M, c, d;
|
||
|
|
for(var i = 0; i < L;) {
|
||
|
|
M = Math.min(L-i, 3850);
|
||
|
|
while(M>0) {
|
||
|
|
c = utf8.charCodeAt(i++);
|
||
|
|
if(c < 0x80) { a += c; b += a; --M; }
|
||
|
|
else if(c < 0x800) {
|
||
|
|
a += 192|((c>>6)&31); b += a; --M;
|
||
|
|
a += 128|(c&63); b += a; --M;
|
||
|
|
} else if(c >= 0xD800 && c < 0xE000) {
|
||
|
|
c = (c&1023)+64; d = utf8.charCodeAt(i++) & 1023;
|
||
|
|
a += 240|((c>>8)&7); b += a; --M;
|
||
|
|
a += 128|((c>>2)&63); b += a; --M;
|
||
|
|
a += 128|((d>>6)&15)|(c&3); b += a; --M;
|
||
|
|
a += 128|(d&63); b += a; --M;
|
||
|
|
} else {
|
||
|
|
a += 224|((c>>12)&15); b += a; --M;
|
||
|
|
a += 128|((c>>6)&63); b += a; --M;
|
||
|
|
a += 128|(c&63); b += a; --M;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
a %= 65521;
|
||
|
|
b %= 65521;
|
||
|
|
}
|
||
|
|
return b > 32767 ? (((b - 65536) * 65536) | a) : ((b * 65536) | a);
|
||
|
|
}
|
||
|
|
|
||
|
|
var foobar = "foo bar baz٪☃🍣";
|
||
|
|
for(var i = 0; i != 11; ++i) foobar += " " + foobar;
|
||
|
|
var assert = require('assert');
|
||
|
|
sheetjs1(foobar); sheetjs2(foobar);
|
||
|
|
assert.equal(sheetjs1(foobar), sheetjs2(foobar));
|
||
|
|
|
||
|
|
var BM = require('./bm');
|
||
|
|
var suite = new BM('unicode string');
|
||
|
|
|
||
|
|
suite.add('sheetjs 1', function() { for(var j = 0; j != 1000; ++j) sheetjs1(foobar); });
|
||
|
|
suite.add('sheetjs 2', function() { for(var j = 0; j != 1000; ++j) sheetjs2(foobar); });
|
||
|
|
suite.run();
|