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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/* Decoding testcase for callback fields.
* Run e.g. ./test_encode_callbacks | ./test_decode_callbacks
*/
#include <stdio.h>
#include <pb_decode.h>
#include "callbacks.pb.h"
#include "test_helpers.h"
bool print_string(pb_istream_t *stream, const pb_field_t *field, void **arg)
{
uint8_t buffer[1024] = {0};
/* We could read block-by-block to avoid the large buffer... */
if (stream->bytes_left > sizeof(buffer) - 1)
return false;
if (!pb_read(stream, buffer, stream->bytes_left))
return false;
/* Print the string, in format comparable with protoc --decode.
* Format comes from the arg defined in main().
*/
printf((char*)*arg, buffer);
return true;
}
bool print_int32(pb_istream_t *stream, const pb_field_t *field, void **arg)
{
uint64_t value;
if (!pb_decode_varint(stream, &value))
return false;
printf((char*)*arg, (long)value);
return true;
}
bool print_fixed32(pb_istream_t *stream, const pb_field_t *field, void **arg)
{
uint32_t value;
if (!pb_decode_fixed32(stream, &value))
return false;
printf((char*)*arg, (long)value);
return true;
}
bool print_fixed64(pb_istream_t *stream, const pb_field_t *field, void **arg)
{
uint64_t value;
if (!pb_decode_fixed64(stream, &value))
return false;
printf((char*)*arg, (long)value);
return true;
}
int main()
{
uint8_t buffer[1024];
size_t length;
pb_istream_t stream;
/* Note: empty initializer list initializes the struct with all-0.
* This is recommended so that unused callbacks are set to NULL instead
* of crashing at runtime.
*/
TestMessage testmessage = {{{NULL}}};
SET_BINARY_MODE(stdin);
length = fread(buffer, 1, 1024, stdin);
stream = pb_istream_from_buffer(buffer, length);
testmessage.submsg.stringvalue.funcs.decode = &print_string;
testmessage.submsg.stringvalue.arg = "submsg {\n stringvalue: \"%s\"\n";
testmessage.submsg.int32value.funcs.decode = &print_int32;
testmessage.submsg.int32value.arg = " int32value: %ld\n";
testmessage.submsg.fixed32value.funcs.decode = &print_fixed32;
testmessage.submsg.fixed32value.arg = " fixed32value: %ld\n";
testmessage.submsg.fixed64value.funcs.decode = &print_fixed64;
testmessage.submsg.fixed64value.arg = " fixed64value: %ld\n}\n";
testmessage.stringvalue.funcs.decode = &print_string;
testmessage.stringvalue.arg = "stringvalue: \"%s\"\n";
testmessage.int32value.funcs.decode = &print_int32;
testmessage.int32value.arg = "int32value: %ld\n";
testmessage.fixed32value.funcs.decode = &print_fixed32;
testmessage.fixed32value.arg = "fixed32value: %ld\n";
testmessage.fixed64value.funcs.decode = &print_fixed64;
testmessage.fixed64value.arg = "fixed64value: %ld\n";
testmessage.repeatedstring.funcs.decode = &print_string;
testmessage.repeatedstring.arg = "repeatedstring: \"%s\"\n";
if (!pb_decode(&stream, TestMessage_fields, &testmessage))
return 1;
return 0;
}
|
