27052412546

Committed 06 Jun 2026 04:20AM UTC coverage: 50.862% (+1.0%) from 49.905%

Build # 27052412546

Build Type

Pull #73

github

Committed by

web-flow

Commit Message

Merge 734572730 into 88a3c8457

Pull Request Pull Request #73: add portable dependencies wheel support

Coverage Stats

31801 of 79859 branches covered (39.82%)

Branch coverage included in aggregate %.

32491 of 46545 relevant lines covered (69.81%)

9947.11 hits per line

Source File
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0.0

/src/dftracer/utils/server/cursor.cpp

#include <dftracer/utils/server/cursor.h>

#include <array>
#include <cstring>

namespace dftracer::utils::server {

namespace {

// Minimal base64 encode/decode for cursor serialization.
static constexpr char BASE64_CHARS[] =
    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

std::string base64_encode(const void* data, std::size_t len) {
    auto* bytes = static_cast<const unsigned char*>(data);
    std::string out;
    out.reserve(4 * ((len + 2) / 3));
    for (std::size_t i = 0; i < len; i += 3) {
        unsigned val = static_cast<unsigned>(bytes[i]) << 16;
        if (i + 1 < len) val |= static_cast<unsigned>(bytes[i + 1]) << 8;
        if (i + 2 < len) val |= static_cast<unsigned>(bytes[i + 2]);
        out.push_back(BASE64_CHARS[(val >> 18) & 0x3F]);
        out.push_back(BASE64_CHARS[(val >> 12) & 0x3F]);
        out.push_back((i + 1 < len) ? BASE64_CHARS[(val >> 6) & 0x3F] : '=');
        out.push_back((i + 2 < len) ? BASE64_CHARS[val & 0x3F] : '=');
    }
    return out;
}

std::optional<std::string> base64_decode(std::string_view sv) {
    static constexpr unsigned char DEC_TABLE[256] = {
        // clang-format off
        64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
        64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
        64,64,64,64,64,64,64,64,64,64,64,62,64,64,64,63,
        52,53,54,55,56,57,58,59,60,61,64,64,64,64,64,64,
        64, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,
        15,16,17,18,19,20,21,22,23,24,25,64,64,64,64,64,
        64,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,
        41,42,43,44,45,46,47,48,49,50,51,64,64,64,64,64,
        64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
        64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
        64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
        64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
        64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
        64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
        64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
        64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
        // clang-format on
    };

    if (sv.size() % 4 != 0) return std::nullopt;
    std::string out;
    out.reserve(sv.size() / 4 * 3);
    for (std::size_t i = 0; i < sv.size(); i += 4) {
        auto a = DEC_TABLE[static_cast<unsigned char>(sv[i])];
        auto b = DEC_TABLE[static_cast<unsigned char>(sv[i + 1])];
        auto c = DEC_TABLE[static_cast<unsigned char>(sv[i + 2])];
        auto d = DEC_TABLE[static_cast<unsigned char>(sv[i + 3])];
        if (a == 64 || b == 64) return std::nullopt;
        unsigned val = (a << 18) | (b << 12);
        out.push_back(static_cast<char>(val >> 16));
        if (c != 64) {
            val |= (c << 6);
            out.push_back(static_cast<char>((val >> 8) & 0xFF));
        }
        if (d != 64) {
            val |= d;
            out.push_back(static_cast<char>(val & 0xFF));
        }
    }
    return out;
}

}  // namespace

// Wire format: 8 bytes file_index + 4 bytes chunk_index + 4 bytes line_offset
// (all little-endian), base64-encoded.
static constexpr std::size_t CURSOR_BYTES = 16;

std::string QueryCursor::encode() const {
    unsigned char raw[CURSOR_BYTES];
    std::memcpy(raw, &file_index, 8);
    std::memcpy(raw + 8, &chunk_index, 4);
    std::memcpy(raw + 12, &line_offset, 4);
    return base64_encode(raw, CURSOR_BYTES);
}

std::optional<QueryCursor> QueryCursor::decode(std::string_view cursor) {
    auto raw = base64_decode(cursor);
    if (!raw || raw->size() != CURSOR_BYTES) return std::nullopt;
    QueryCursor c;
    std::memcpy(&c.file_index, raw->data(), 8);
    std::memcpy(&c.chunk_index, raw->data() + 8, 4);
    std::memcpy(&c.line_offset, raw->data() + 12, 4);
    return c;
}

}  // namespace dftracer::utils::server

1	#include <dftracer/utils/server/cursor.h>
2
3	#include <array>
4	#include <cstring>
5
6	namespace dftracer::utils::server {
7
8	namespace {
9
10	// Minimal base64 encode/decode for cursor serialization.
11	static constexpr char BASE64_CHARS[] =
12	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
13
14	std::string base64_encode(const void* data, std::size_t len) {	×
15	auto* bytes = static_cast<const unsigned char*>(data);	×
16	std::string out;	×
17	out.reserve(4 * ((len + 2) / 3));	×
18	for (std::size_t i = 0; i < len; i += 3) {	×
19	unsigned val = static_cast<unsigned>(bytes[i]) << 16;	×
20	if (i + 1 < len) val \|= static_cast<unsigned>(bytes[i + 1]) << 8;	×
21	if (i + 2 < len) val \|= static_cast<unsigned>(bytes[i + 2]);	×
22	out.push_back(BASE64_CHARS[(val >> 18) & 0x3F]);	×
23	out.push_back(BASE64_CHARS[(val >> 12) & 0x3F]);	×
24	out.push_back((i + 1 < len) ? BASE64_CHARS[(val >> 6) & 0x3F] : '=');	×
25	out.push_back((i + 2 < len) ? BASE64_CHARS[val & 0x3F] : '=');	×
26	}	×
27	return out;	×
28	}	×
29
30	std::optional<std::string> base64_decode(std::string_view sv) {	×
31	static constexpr unsigned char DEC_TABLE[256] = {
32	// clang-format off
33	64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
34	64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
35	64,64,64,64,64,64,64,64,64,64,64,62,64,64,64,63,
36	52,53,54,55,56,57,58,59,60,61,64,64,64,64,64,64,
37	64, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,
38	15,16,17,18,19,20,21,22,23,24,25,64,64,64,64,64,
39	64,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,
40	41,42,43,44,45,46,47,48,49,50,51,64,64,64,64,64,
41	64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
42	64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
43	64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
44	64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
45	64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
46	64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
47	64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
48	64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,
49	// clang-format on
50	};
51
52	if (sv.size() % 4 != 0) return std::nullopt;	×
53	std::string out;	×
54	out.reserve(sv.size() / 4 * 3);	×
55	for (std::size_t i = 0; i < sv.size(); i += 4) {	×
56	auto a = DEC_TABLE[static_cast<unsigned char>(sv[i])];	×
57	auto b = DEC_TABLE[static_cast<unsigned char>(sv[i + 1])];	×
58	auto c = DEC_TABLE[static_cast<unsigned char>(sv[i + 2])];	×
59	auto d = DEC_TABLE[static_cast<unsigned char>(sv[i + 3])];	×
60	if (a == 64 \|\| b == 64) return std::nullopt;	×
61	unsigned val = (a << 18) \| (b << 12);	×
62	out.push_back(static_cast<char>(val >> 16));	×
63	if (c != 64) {	×
64	val \|= (c << 6);	×
65	out.push_back(static_cast<char>((val >> 8) & 0xFF));	×
66	}	×
67	if (d != 64) {	×
68	val \|= d;	×
69	out.push_back(static_cast<char>(val & 0xFF));	×
70	}	×
71	}	×
72	return out;	×
73	}	×
74
75	} // namespace
76
77	// Wire format: 8 bytes file_index + 4 bytes chunk_index + 4 bytes line_offset
78	// (all little-endian), base64-encoded.
79	static constexpr std::size_t CURSOR_BYTES = 16;
80
81	std::string QueryCursor::encode() const {	×
82	unsigned char raw[CURSOR_BYTES];
83	std::memcpy(raw, &file_index, 8);	×
84	std::memcpy(raw + 8, &chunk_index, 4);	×
85	std::memcpy(raw + 12, &line_offset, 4);	×
86	return base64_encode(raw, CURSOR_BYTES);	×
87	}
88
89	std::optional<QueryCursor> QueryCursor::decode(std::string_view cursor) {	×
90	auto raw = base64_decode(cursor);	×
91	if (!raw \|\| raw->size() != CURSOR_BYTES) return std::nullopt;	×
92	QueryCursor c;	×
93	std::memcpy(&c.file_index, raw->data(), 8);	×
94	std::memcpy(&c.chunk_index, raw->data() + 8, 4);	×
95	std::memcpy(&c.line_offset, raw->data() + 12, 4);	×
96	return c;	×
97	}	×
98
99	} // namespace dftracer::utils::server

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