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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/* Copyright (c) 2009, 2011, 2013, 2015 Nicira, Inc.
*
* 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.
*/
#include <config.h>
#include "ovsdb-parser.h"
#include <ctype.h>
#include <stdarg.h>
#include "ovsdb-error.h"
void
ovsdb_parser_init(struct ovsdb_parser *parser, const struct json *json,
const char *name, ...)
{
va_list args;
va_start(args, name);
parser->name = xvasprintf(name, args);
va_end(args);
sset_init(&parser->used);
parser->error = NULL;
parser->json = (json && json->type == JSON_OBJECT ? json : NULL);
if (!parser->json) {
ovsdb_parser_raise_error(parser, "Object expected.");
}
}
bool
ovsdb_parser_is_id(const char *string)
{
unsigned char c;
c = *string;
if (!isalpha(c) && c != '_') {
return false;
}
for (;;) {
c = *++string;
if (c == '\0') {
return true;
} else if (!isalpha(c) && !isdigit(c) && c != '_') {
return false;
}
}
}
const struct json *
ovsdb_parser_member(struct ovsdb_parser *parser, const char *name,
enum ovsdb_parser_types types)
{
struct json *value;
if (!parser->json) {
return NULL;
}
value = shash_find_data(json_object(parser->json), name);
if (!value) {
if (!(types & OP_OPTIONAL)) {
ovsdb_parser_raise_error(parser,
"Required '%s' member is missing.", name);
}
return NULL;
}
if (((int) value->type >= 0 && value->type < JSON_N_TYPES
&& types & (1u << value->type))
|| (types & OP_ID && value->type == JSON_STRING
&& ovsdb_parser_is_id(value->u.string)))
{
sset_add(&parser->used, name);
return value;
} else {
ovsdb_parser_raise_error(parser, "Type mismatch for member '%s'.",
name);
return NULL;
}
}
void
ovsdb_parser_raise_error(struct ovsdb_parser *parser, const char *format, ...)
{
if (!parser->error) {
struct ovsdb_error *error;
va_list args;
char *message;
va_start(args, format);
message = xvasprintf(format, args);
va_end(args);
error = ovsdb_syntax_error(parser->json, NULL, "Parsing %s failed: %s",
parser->name, message);
free(message);
parser->error = error;
}
}
struct ovsdb_error *
ovsdb_parser_get_error(const struct ovsdb_parser *parser)
{
return parser->error ? ovsdb_error_clone(parser->error) : NULL;
}
bool
ovsdb_parser_has_error(const struct ovsdb_parser *parser)
{
return parser->error != NULL;
}
struct ovsdb_error *
ovsdb_parser_destroy(struct ovsdb_parser *parser)
{
free(parser->name);
sset_destroy(&parser->used);
return parser->error;
}
struct ovsdb_error *
ovsdb_parser_finish(struct ovsdb_parser *parser)
{
if (!parser->error) {
const struct shash *object = json_object(parser->json);
size_t n_unused;
n_unused = shash_count(object) - sset_count(&parser->used);
if (n_unused) {
struct shash_node *node;
SHASH_FOR_EACH (node, object) {
if (!sset_contains(&parser->used, node->name)) {
if (n_unused > 1) {
ovsdb_parser_raise_error(
parser,
"Member '%s' and %"PRIuSIZE" other member%s "
"are present but not allowed here.",
node->name, n_unused - 1, n_unused > 2 ? "s" : "");
} else {
ovsdb_parser_raise_error(
parser,
"Member '%s' is present but not allowed here.",
node->name);
}
break;
}
}
}
}
return ovsdb_parser_destroy(parser);
}
|
