1 | #include <string> |
---|---|
2 | |
3 | #include <iostream> |
4 | #include <IO/VarInt.h> |
5 | #include <IO/WriteBufferFromString.h> |
6 | #include <IO/ReadBufferFromString.h> |
7 | #include <IO/ReadHelpers.h> |
8 | #include <Poco/HexBinaryEncoder.h> |
9 | |
10 | |
11 | static void parse_trash_string_as_uint_must_fail(const std::string & str) |
12 | { |
13 | using namespace DB; |
14 | |
15 | unsigned x = 0xFF; |
16 | |
17 | try |
18 | { |
19 | x = parse<unsigned>(str); |
20 | } |
21 | catch (...) |
22 | { |
23 | /// Ok |
24 | return; |
25 | } |
26 | |
27 | std::cerr << "Parsing must fail, but finished sucessfully x="<< x; |
28 | exit(-1); |
29 | } |
30 | |
31 | |
32 | int main(int argc, char ** argv) |
33 | { |
34 | parse_trash_string_as_uint_must_fail("trash"); |
35 | parse_trash_string_as_uint_must_fail("-1"); |
36 | |
37 | if (argc != 2) |
38 | { |
39 | std::cerr << "Usage: "<< std::endl |
40 | << argv[0] << " unsigned_number"<< std::endl; |
41 | return 1; |
42 | } |
43 | |
44 | DB::UInt64 x = DB::parse<UInt64>(argv[1]); |
45 | Poco::HexBinaryEncoder hex(std::cout); |
46 | DB::writeVarUInt(x, hex); |
47 | std::cout << std::endl; |
48 | |
49 | std::string s; |
50 | |
51 | { |
52 | DB::WriteBufferFromString wb(s); |
53 | DB::writeVarUInt(x, wb); |
54 | wb.next(); |
55 | } |
56 | |
57 | hex << s; |
58 | std::cout << std::endl; |
59 | |
60 | s.clear(); |
61 | s.resize(9); |
62 | |
63 | s.resize(DB::writeVarUInt(x, s.data()) - s.data()); |
64 | |
65 | hex << s; |
66 | std::cout << std::endl; |
67 | |
68 | DB::UInt64 y = 0; |
69 | |
70 | DB::ReadBufferFromString rb(s); |
71 | DB::readVarUInt(y, rb); |
72 | |
73 | std::cerr << "x: "<< x << ", y: "<< y << std::endl; |
74 | |
75 | return 0; |
76 | } |
77 |