blob: c1d831928351c6de3c5c0a5f4b0ef8bc8b43c1b0 (
plain) (
blame)
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
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
52
53
54
55
56
|
#pragma once
#include <Common/StringUtils/StringUtils.h>
#include <Functions/StringHelpers.h>
namespace DB
{
/// Extracts scheme from given url.
inline std::string_view getURLScheme(const char * data, size_t size)
{
// scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
const char * pos = data;
const char * end = data + size;
if (isAlphaASCII(*pos))
{
for (++pos; pos < end; ++pos)
{
if (!(isAlphaNumericASCII(*pos) || *pos == '+' || *pos == '-' || *pos == '.'))
{
break;
}
}
return std::string_view(data, pos - data);
}
return {};
}
struct ExtractProtocol
{
static size_t getReserveLengthForElement()
{
return strlen("https") + 1;
}
static void execute(Pos data, size_t size, Pos & res_data, size_t & res_size)
{
res_data = data;
res_size = 0;
std::string_view scheme = getURLScheme(data, size);
Pos pos = data + scheme.size();
if (scheme.empty() || (data + size) - pos < 4)
return;
if (pos[0] == ':')
res_size = pos - data;
}
};
}
|
