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
37 static StringInputVisitor *to_siv(Visitor *v)
39 return container_of(v, StringInputVisitor, visitor);
42 static void free_range(void *range, void *dummy)
47 static void parse_str(StringInputVisitor *siv, Error **errp)
49 char *str = (char *) siv->string;
60 start = strtoll(str, &endptr, 0);
61 if (errno == 0 && endptr > str) {
62 if (*endptr == '\0') {
63 cur = g_malloc0(sizeof(*cur));
66 siv->ranges = g_list_insert_sorted_merged(siv->ranges, cur,
70 } else if (*endptr == '-') {
73 end = strtoll(str, &endptr, 0);
74 if (errno == 0 && endptr > str && start <= end &&
75 (start > INT64_MAX - 65536 ||
76 end < start + 65536)) {
77 if (*endptr == '\0') {
78 cur = g_malloc0(sizeof(*cur));
82 g_list_insert_sorted_merged(siv->ranges,
87 } else if (*endptr == ',') {
89 cur = g_malloc0(sizeof(*cur));
93 g_list_insert_sorted_merged(siv->ranges,
103 } else if (*endptr == ',') {
105 cur = g_malloc0(sizeof(*cur));
107 cur->end = start + 1;
108 siv->ranges = g_list_insert_sorted_merged(siv->ranges,
122 g_list_foreach(siv->ranges, free_range, NULL);
123 g_list_free(siv->ranges);
128 start_list(Visitor *v, const char *name, Error **errp)
130 StringInputVisitor *siv = to_siv(v);
132 parse_str(siv, errp);
134 siv->cur_range = g_list_first(siv->ranges);
135 if (siv->cur_range) {
136 Range *r = siv->cur_range->data;
143 static GenericList *next_list(Visitor *v, GenericList **list, size_t size)
145 StringInputVisitor *siv = to_siv(v);
149 if (!siv->ranges || !siv->cur_range) {
153 r = siv->cur_range->data;
158 if (siv->cur < r->begin || siv->cur >= r->end) {
159 siv->cur_range = g_list_next(siv->cur_range);
160 if (!siv->cur_range) {
163 r = siv->cur_range->data;
174 link = &(*list)->next;
177 *link = g_malloc0(size);
181 static void end_list(Visitor *v)
183 StringInputVisitor *siv = to_siv(v);
187 static void parse_type_int64(Visitor *v, const char *name, int64_t *obj,
190 StringInputVisitor *siv = to_siv(v);
193 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
198 parse_str(siv, errp);
204 if (!siv->cur_range) {
207 siv->cur_range = g_list_first(siv->ranges);
208 if (!siv->cur_range) {
212 r = siv->cur_range->data;
225 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
226 "an int64 value or range");
229 static void parse_type_uint64(Visitor *v, const char *name, uint64_t *obj,
232 /* FIXME: parse_type_int64 mishandles values over INT64_MAX */
235 parse_type_int64(v, name, &i, &err);
237 error_propagate(errp, err);
243 static void parse_type_size(Visitor *v, const char *name, uint64_t *obj,
246 StringInputVisitor *siv = to_siv(v);
251 parse_option_size(name, siv->string, &val, &err);
253 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
258 error_propagate(errp, err);
265 static void parse_type_bool(Visitor *v, const char *name, bool *obj,
268 StringInputVisitor *siv = to_siv(v);
271 if (!strcasecmp(siv->string, "on") ||
272 !strcasecmp(siv->string, "yes") ||
273 !strcasecmp(siv->string, "true")) {
277 if (!strcasecmp(siv->string, "off") ||
278 !strcasecmp(siv->string, "no") ||
279 !strcasecmp(siv->string, "false")) {
285 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
289 static void parse_type_str(Visitor *v, const char *name, char **obj,
292 StringInputVisitor *siv = to_siv(v);
294 *obj = g_strdup(siv->string);
296 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
301 static void parse_type_number(Visitor *v, const char *name, double *obj,
304 StringInputVisitor *siv = to_siv(v);
305 char *endp = (char *) siv->string;
310 val = strtod(siv->string, &endp);
312 if (!siv->string || errno || endp == siv->string || *endp) {
313 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
321 static void parse_optional(Visitor *v, const char *name, bool *present)
323 StringInputVisitor *siv = to_siv(v);
333 Visitor *string_input_get_visitor(StringInputVisitor *v)
338 void string_input_visitor_cleanup(StringInputVisitor *v)
340 g_list_foreach(v->ranges, free_range, NULL);
341 g_list_free(v->ranges);
345 StringInputVisitor *string_input_visitor_new(const char *str)
347 StringInputVisitor *v;
349 v = g_malloc0(sizeof(*v));
351 v->visitor.type_enum = input_type_enum;
352 v->visitor.type_int64 = parse_type_int64;
353 v->visitor.type_uint64 = parse_type_uint64;
354 v->visitor.type_size = parse_type_size;
355 v->visitor.type_bool = parse_type_bool;
356 v->visitor.type_str = parse_type_str;
357 v->visitor.type_number = parse_type_number;
358 v->visitor.start_list = start_list;
359 v->visitor.next_list = next_list;
360 v->visitor.end_list = end_list;
361 v->visitor.optional = parse_optional;