2 * String parsing visitor
4 * Copyright Red Hat, Inc. 2012-2016
6 * Author: Paolo Bonzini <pbonzini@redhat.com>
8 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
9 * See the COPYING.LIB file in the top-level directory.
13 #include "qemu/osdep.h"
14 #include "qapi/error.h"
15 #include "qemu-common.h"
16 #include "qapi/string-input-visitor.h"
17 #include "qapi/visitor-impl.h"
18 #include "qapi/qmp/qerror.h"
19 #include "qemu/option.h"
20 #include "qemu/queue.h"
21 #include "qemu/range.h"
24 struct StringInputVisitor
35 static StringInputVisitor
*to_siv(Visitor
*v
)
37 return container_of(v
, StringInputVisitor
, visitor
);
40 static void free_range(void *range
, void *dummy
)
45 static int parse_str(StringInputVisitor
*siv
, const char *name
, Error
**errp
)
47 char *str
= (char *) siv
->string
;
58 start
= strtoll(str
, &endptr
, 0);
59 if (errno
== 0 && endptr
> str
) {
60 if (*endptr
== '\0') {
61 cur
= g_malloc0(sizeof(*cur
));
64 siv
->ranges
= range_list_insert(siv
->ranges
, cur
);
67 } else if (*endptr
== '-') {
70 end
= strtoll(str
, &endptr
, 0);
71 if (errno
== 0 && endptr
> str
&& start
<= end
&&
72 (start
> INT64_MAX
- 65536 ||
73 end
< start
+ 65536)) {
74 if (*endptr
== '\0') {
75 cur
= g_malloc0(sizeof(*cur
));
78 siv
->ranges
= range_list_insert(siv
->ranges
, cur
);
81 } else if (*endptr
== ',') {
83 cur
= g_malloc0(sizeof(*cur
));
86 siv
->ranges
= range_list_insert(siv
->ranges
, cur
);
94 } else if (*endptr
== ',') {
96 cur
= g_malloc0(sizeof(*cur
));
99 siv
->ranges
= range_list_insert(siv
->ranges
, cur
);
111 g_list_foreach(siv
->ranges
, free_range
, NULL
);
112 g_list_free(siv
->ranges
);
114 error_setg(errp
, QERR_INVALID_PARAMETER_VALUE
, name
? name
: "null",
115 "an int64 value or range");
120 start_list(Visitor
*v
, const char *name
, GenericList
**list
, size_t size
,
123 StringInputVisitor
*siv
= to_siv(v
);
125 /* We don't support visits without a list */
128 if (parse_str(siv
, name
, errp
) < 0) {
133 siv
->cur_range
= g_list_first(siv
->ranges
);
134 if (siv
->cur_range
) {
135 Range
*r
= siv
->cur_range
->data
;
139 *list
= g_malloc0(size
);
145 static GenericList
*next_list(Visitor
*v
, GenericList
*tail
, size_t size
)
147 StringInputVisitor
*siv
= to_siv(v
);
150 if (!siv
->ranges
|| !siv
->cur_range
) {
154 r
= siv
->cur_range
->data
;
159 if (siv
->cur
< r
->begin
|| siv
->cur
>= r
->end
) {
160 siv
->cur_range
= g_list_next(siv
->cur_range
);
161 if (!siv
->cur_range
) {
164 r
= siv
->cur_range
->data
;
171 tail
->next
= g_malloc0(size
);
175 static void end_list(Visitor
*v
)
179 static void parse_type_int64(Visitor
*v
, const char *name
, int64_t *obj
,
182 StringInputVisitor
*siv
= to_siv(v
);
185 error_setg(errp
, QERR_INVALID_PARAMETER_TYPE
, name
? name
: "null",
190 if (parse_str(siv
, name
, errp
) < 0) {
198 if (!siv
->cur_range
) {
201 siv
->cur_range
= g_list_first(siv
->ranges
);
202 if (!siv
->cur_range
) {
206 r
= siv
->cur_range
->data
;
219 error_setg(errp
, QERR_INVALID_PARAMETER_VALUE
, name
? name
: "null",
220 "an int64 value or range");
223 static void parse_type_uint64(Visitor
*v
, const char *name
, uint64_t *obj
,
226 /* FIXME: parse_type_int64 mishandles values over INT64_MAX */
229 parse_type_int64(v
, name
, &i
, &err
);
231 error_propagate(errp
, err
);
237 static void parse_type_size(Visitor
*v
, const char *name
, uint64_t *obj
,
240 StringInputVisitor
*siv
= to_siv(v
);
245 parse_option_size(name
, siv
->string
, &val
, &err
);
247 error_setg(errp
, QERR_INVALID_PARAMETER_TYPE
, name
? name
: "null",
252 error_propagate(errp
, err
);
259 static void parse_type_bool(Visitor
*v
, const char *name
, bool *obj
,
262 StringInputVisitor
*siv
= to_siv(v
);
265 if (!strcasecmp(siv
->string
, "on") ||
266 !strcasecmp(siv
->string
, "yes") ||
267 !strcasecmp(siv
->string
, "true")) {
271 if (!strcasecmp(siv
->string
, "off") ||
272 !strcasecmp(siv
->string
, "no") ||
273 !strcasecmp(siv
->string
, "false")) {
279 error_setg(errp
, QERR_INVALID_PARAMETER_TYPE
, name
? name
: "null",
283 static void parse_type_str(Visitor
*v
, const char *name
, char **obj
,
286 StringInputVisitor
*siv
= to_siv(v
);
288 *obj
= g_strdup(siv
->string
);
291 error_setg(errp
, QERR_INVALID_PARAMETER_TYPE
, name
? name
: "null",
296 static void parse_type_number(Visitor
*v
, const char *name
, double *obj
,
299 StringInputVisitor
*siv
= to_siv(v
);
300 char *endp
= (char *) siv
->string
;
305 val
= strtod(siv
->string
, &endp
);
307 if (!siv
->string
|| errno
|| endp
== siv
->string
|| *endp
) {
308 error_setg(errp
, QERR_INVALID_PARAMETER_TYPE
, name
? name
: "null",
316 static void parse_optional(Visitor
*v
, const char *name
, bool *present
)
318 StringInputVisitor
*siv
= to_siv(v
);
328 Visitor
*string_input_get_visitor(StringInputVisitor
*v
)
333 void string_input_visitor_cleanup(StringInputVisitor
*v
)
335 g_list_foreach(v
->ranges
, free_range
, NULL
);
336 g_list_free(v
->ranges
);
340 StringInputVisitor
*string_input_visitor_new(const char *str
)
342 StringInputVisitor
*v
;
344 v
= g_malloc0(sizeof(*v
));
346 v
->visitor
.type
= VISITOR_INPUT
;
347 v
->visitor
.type_int64
= parse_type_int64
;
348 v
->visitor
.type_uint64
= parse_type_uint64
;
349 v
->visitor
.type_size
= parse_type_size
;
350 v
->visitor
.type_bool
= parse_type_bool
;
351 v
->visitor
.type_str
= parse_type_str
;
352 v
->visitor
.type_number
= parse_type_number
;
353 v
->visitor
.start_list
= start_list
;
354 v
->visitor
.next_list
= next_list
;
355 v
->visitor
.end_list
= end_list
;
356 v
->visitor
.optional
= parse_optional
;