【我和小囡的故事】（后篇）

out += bse64encodechrs.chrat(((c1 & 0x3) 4)); out += bse64encodechrs.chrat((c2 & 0xf) 2); out += bse64encodechrs.chrat(((c1 & 0x3) 4)); out += bse64encodechrs.chrat(((c2 & 0xf) 6)); out += bse64encodechrs.chrat(c3 & 0x3f); } returut; } functon bse64decode(str) { vr c1, c2, c3, c4; vr , len, out; len = str.length; = 0; out = ””; whle ( 4)); do { c3 = str.chrcodeat(++) & 0xff; f (c3 == 61) returut; c3 = bse64decodechrs[c3]; } whle ( 2)); do { c4 = str.chrcodeat(++) & 0xff; f (c4 == 61) returut; c4 = bse64decodechrs[c4]; } whle ( > 12) & 0x0f)); out += strg.fromchrcode(0x80 | ((c >> 6) & 0x3f)); out += strg.fromchrcode(0x80 | ((c >> 0) & 0x3f)); } else { out += strg.fromchrcode(0xc0 | ((c >> 6) & 0x1f)); out += strg.fromchrcode(0x80 | ((c >> 0) & 0x3f)); } } returut; } functon utf8to16(str) { vr out, , len, c; vr chr2, chr3; out = ””; len = str.length; = 0; whle ( > 4) { cse 0: cse 1: cse 2: cse 3: cse 4: cse 5: cse 6: cse 7: out += str.chrat( - 1); brek; cse 12: cse 13: chr2 = str.chrcod