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https://github.com/ClickHouse/ClickHouse.git
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90 lines
2.3 KiB
C++
90 lines
2.3 KiB
C++
#include <IO/WriteHelpers.h>
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#include <inttypes.h>
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#include <stdio.h>
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namespace DB
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{
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void formatHex(const UInt8 * __restrict src, UInt8 * __restrict dst, const size_t num_bytes)
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{
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/// More optimal than lookup table by nibbles.
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constexpr auto hex =
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"000102030405060708090a0b0c0d0e0f"
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"101112131415161718191a1b1c1d1e1f"
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"202122232425262728292a2b2c2d2e2f"
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"303132333435363738393a3b3c3d3e3f"
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"404142434445464748494a4b4c4d4e4f"
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"505152535455565758595a5b5c5d5e5f"
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"606162636465666768696a6b6c6d6e6f"
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"707172737475767778797a7b7c7d7e7f"
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"808182838485868788898a8b8c8d8e8f"
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"909192939495969798999a9b9c9d9e9f"
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"a0a1a2a3a4a5a6a7a8a9aaabacadaeaf"
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"b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
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"c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
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"d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
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"e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
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"f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff";
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size_t src_pos = 0;
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size_t dst_pos = 0;
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for (; src_pos < num_bytes; ++src_pos)
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{
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memcpy(&dst[dst_pos], &hex[src[src_pos] * 2], 2);
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dst_pos += 2;
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}
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}
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void formatUUID(const UInt8 * src16, UInt8 * dst36)
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{
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formatHex(&src16[0], &dst36[0], 4);
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dst36[8] = '-';
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formatHex(&src16[4], &dst36[9], 2);
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dst36[13] = '-';
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formatHex(&src16[6], &dst36[14], 2);
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dst36[18] = '-';
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formatHex(&src16[8], &dst36[19], 2);
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dst36[23] = '-';
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formatHex(&src16[10], &dst36[24], 6);
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}
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void formatUUID(const UInt128 & uuid, UInt8 * dst36)
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{
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char s[16+1];
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dst36[8] = '-';
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dst36[13] = '-';
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dst36[18] = '-';
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dst36[23] = '-';
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snprintf(s, sizeof(s), "%016llx", static_cast<long long>(uuid.low));
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memcpy(&dst36[0], &s, 8);
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memcpy(&dst36[9], &s[8], 4);
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memcpy(&dst36[14], &s[12], 4);
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snprintf(s, sizeof(s), "%016llx", static_cast<long long>(uuid.high));
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memcpy(&dst36[19], &s[0], 4);
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memcpy(&dst36[24], &s[4], 12);
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}
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void writeException(const Exception & e, WriteBuffer & buf)
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{
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writeBinary(e.code(), buf);
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writeBinary(String(e.name()), buf);
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writeBinary(e.displayText(), buf);
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writeBinary(e.getStackTrace().toString(), buf);
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bool has_nested = e.nested() != nullptr;
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writeBinary(has_nested, buf);
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if (has_nested)
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writeException(Exception(*e.nested()), buf);
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}
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}
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