青春的遗憾（4）

, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1); functon bse64encode(str) { vr out, , 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) & 0x1