blob: af1ce0bf239aa29cf7a34501538b4915bcecf209 (
plain)
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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#import "NSDictionary+GRPC.h"
#include <grpc/support/alloc.h>
#pragma mark Category for binary metadata elements
@interface NSData (GRPCMetadata)
+ (instancetype)grpc_dataFromMetadataValue:(grpc_metadata *)metadata;
// Fill a metadata object with the binary value in this NSData.
- (void)grpc_initMetadata:(grpc_metadata *)metadata;
@end
@implementation NSData (GRPCMetadata)
+ (instancetype)grpc_dataFromMetadataValue:(grpc_metadata *)metadata {
// TODO(jcanizales): Should we use a non-copy constructor?
return [self dataWithBytes:GRPC_SLICE_START_PTR(metadata->value)
length:GRPC_SLICE_LENGTH(metadata->value)];
}
- (void)grpc_initMetadata:(grpc_metadata *)metadata {
metadata->value = grpc_slice_from_copied_buffer(self.bytes, self.length);
}
@end
#pragma mark Category for textual metadata elements
@interface NSString (GRPCMetadata)
+ (instancetype)grpc_stringFromMetadataValue:(grpc_metadata *)metadata;
// Fill a metadata object with the textual value in this NSString.
- (void)grpc_initMetadata:(grpc_metadata *)metadata;
@end
@implementation NSString (GRPCMetadata)
+ (instancetype)grpc_stringFromMetadataValue:(grpc_metadata *)metadata {
return [[self alloc] initWithBytes:GRPC_SLICE_START_PTR(metadata->value)
length:GRPC_SLICE_LENGTH(metadata->value)
encoding:NSASCIIStringEncoding];
}
// Precondition: This object contains only ASCII characters.
- (void)grpc_initMetadata:(grpc_metadata *)metadata {
metadata->value = grpc_slice_from_copied_string(self.UTF8String);
}
@end
#pragma mark Category for metadata arrays
@implementation NSDictionary (GRPC)
+ (instancetype)grpc_dictionaryFromMetadataArray:(grpc_metadata_array)array {
return [self grpc_dictionaryFromMetadata:array.metadata count:array.count];
}
+ (instancetype)grpc_dictionaryFromMetadata:(grpc_metadata *)entries count:(size_t)count {
NSMutableDictionary *metadata = [NSMutableDictionary dictionaryWithCapacity:count];
for (grpc_metadata *entry = entries; entry < entries + count; entry++) {
char *key = grpc_slice_to_c_string(entry->key);
NSString *name = [NSString stringWithCString:key encoding:NSASCIIStringEncoding];
gpr_free(key);
if (!name || metadata[name]) {
// Log if name is nil?
continue;
}
id value;
if ([name hasSuffix:@"-bin"]) {
value = [NSData grpc_dataFromMetadataValue:entry];
} else {
value = [NSString grpc_stringFromMetadataValue:entry];
}
metadata[name] = value;
}
return metadata;
}
// Preconditions: All keys are ASCII strings. Keys ending in -bin have NSData values; the others
// have NSString values.
- (grpc_metadata *)grpc_metadataArray {
grpc_metadata *metadata = gpr_malloc([self count] * sizeof(grpc_metadata));
grpc_metadata *current = metadata;
for (NSString *key in self) {
id value = self[key];
current->key = grpc_slice_from_copied_string(key.UTF8String);
if ([value respondsToSelector:@selector(grpc_initMetadata:)]) {
[value grpc_initMetadata:current];
} else {
[NSException raise:NSInvalidArgumentException
format:@"Metadata values must be NSString or NSData."];
}
++current;
}
return metadata;
}
@end
|
