/src/gdal/frmts/zarr/vsikerchunk_inline.hpp
Line | Count | Source |
1 | | /****************************************************************************** |
2 | | * |
3 | | * Project: GDAL |
4 | | * Purpose: Zarr driver |
5 | | * Author: Even Rouault <even dot rouault at spatialys.com> |
6 | | * |
7 | | ****************************************************************************** |
8 | | * Copyright (c) 2025, Even Rouault <even dot rouault at spatialys.com> |
9 | | * |
10 | | * SPDX-License-Identifier: MIT |
11 | | ****************************************************************************/ |
12 | | |
13 | | #ifndef VSIKERCHUNK_INLINE_HPP |
14 | | #define VSIKERCHUNK_INLINE_HPP |
15 | | |
16 | | #include <string_view> |
17 | | |
18 | | inline bool |
19 | | ZARRIsLikelyStreamableKerchunkJSONRefContent(const std::string_view &str) |
20 | 152 | { |
21 | | // v0 |
22 | 152 | for (const char *pszExpectedPrefix : {"{\".zgroup\":{", "{\".zgroup\":\"{", |
23 | 152 | "{\".zattrs\":{", "{\".zattrs\":\"{"}) |
24 | 608 | { |
25 | 608 | for (char ch : str) |
26 | 18.9k | { |
27 | 18.9k | if (!(ch == ' ' || ch == '\n' || ch == '\r')) |
28 | 612 | { |
29 | 612 | if (ch != *pszExpectedPrefix) |
30 | 592 | break; |
31 | 20 | ++pszExpectedPrefix; |
32 | 20 | if (*pszExpectedPrefix == 0) |
33 | 0 | { |
34 | 0 | return true; |
35 | 0 | } |
36 | 20 | } |
37 | 18.9k | } |
38 | 608 | } |
39 | | |
40 | 152 | { |
41 | | // v1 |
42 | 152 | const char *pszExpectedPrefix = "{\"version\":1,\"refs\":{"; |
43 | 152 | for (char ch : str) |
44 | 4.74k | { |
45 | 4.74k | if (!(ch == ' ' || ch == '\n' || ch == '\r')) |
46 | 153 | { |
47 | 153 | if (ch != *pszExpectedPrefix) |
48 | 148 | break; |
49 | 5 | ++pszExpectedPrefix; |
50 | 5 | if (*pszExpectedPrefix == 0) |
51 | 0 | { |
52 | 0 | return str.find("\".zgroup\"") != std::string::npos || |
53 | 0 | str.find("\".zarray\"") != std::string::npos; |
54 | 0 | } |
55 | 5 | } |
56 | 4.74k | } |
57 | 152 | } |
58 | 152 | return false; |
59 | 152 | } |
60 | | |
61 | | #endif |