Created
October 26, 2018 11:53
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Uglify error sample
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| var input = Array.from([17, 240, 159, 152, 128, 32]); | |
| function utf8_read(buffer, start, end) { | |
| var len = end - start; | |
| if (len < 1) | |
| return ""; | |
| var parts = null, | |
| chunk = [], | |
| i = 0, // char offset | |
| t; // temporary | |
| while (start < end) { | |
| t = buffer[start++]; | |
| if (t < 128) | |
| chunk[i++] = t; | |
| else if (t > 191 && t < 224) | |
| chunk[i++] = (t & 31) << 6 | buffer[start++] & 63; | |
| else if (t > 239 && t < 365) { | |
| t = ((t & 7) << 18 | (buffer[start++] & 63) << 12 | (buffer[start++] & 63) << 6 | buffer[start++] & 63) - 0x10000; | |
| chunk[i++] = 0xD800 + (t >> 10); | |
| chunk[i++] = 0xDC00 + (t & 1023); | |
| } else | |
| chunk[i++] = (t & 15) << 12 | (buffer[start++] & 63) << 6 | buffer[start++] & 63; | |
| if (i > 8191) { | |
| (parts || (parts = [])).push(String.fromCharCode.apply(String, chunk)); | |
| i = 0; | |
| } | |
| } | |
| if (parts) { | |
| if (i) | |
| parts.push(String.fromCharCode.apply(String, chunk.slice(0, i))); | |
| return parts.join(""); | |
| } | |
| console.log(chunk); | |
| return String.fromCharCode.apply(String, chunk.slice(0, i)); | |
| }; | |
| function utf8_read_min(t, e, n) { | |
| if (n - e < 1) | |
| return ""; | |
| for (var r, i = null, o = [], s = 0; e < n; ) | |
| r = t[e++], | |
| o[s++] = r < 128 ? r : 191 < r && r < 224 ? (31 & r) << 6 | 63 & t[e++] : 239 < r && r < 365 ? (r = ((7 & r) << 18 | (63 & t[e++]) << 12 | (63 & t[e++]) << 6 | 63 & t[e++]) - 65536, | |
| o[s++] = 55296 + (r >> 10), | |
| 56320 + (1023 & r)) : (15 & r) << 12 | (63 & t[e++]) << 6 | 63 & t[e++], | |
| 8191 < s && ((i || (i = [])).push(String.fromCharCode.apply(String, o)), | |
| s = 0); | |
| console.log(o); | |
| return i ? (s && i.push(String.fromCharCode.apply(String, o.slice(0, s))), | |
| i.join("")) : String.fromCharCode.apply(String, o.slice(0, s)) | |
| }; | |
| utf8_read(input, 0, input.length); | |
| utf8_read_min(input, 0, input.length); |
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