禁途（41-45）
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len; vr c1, c2, c3; len = str.length; = 0; out = ””; whle ( > 2); out += bse64EncodeChrs.chrAt((c1 & 0x3) 2); 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
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