2 * String parsing visitor
4 * Copyright Red Hat, Inc. 2012-2016
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 "qapi/qmp/qnull.h"
20 #include "qemu/option.h"
21 #include "qemu/queue.h"
22 #include "qemu/range.h"
25 struct StringInputVisitor
34 void *list; /* Only needed for sanity checking the caller */
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 int parse_str(StringInputVisitor *siv, const char *name, Error **errp)
49 char *str = (char *) siv->string;
64 start = strtoll(str, &endptr, 0);
65 if (errno == 0 && endptr > str) {
66 if (*endptr == '\0') {
67 cur = g_malloc0(sizeof(*cur));
68 range_set_bounds(cur, start, start);
69 siv->ranges = range_list_insert(siv->ranges, cur);
72 } else if (*endptr == '-') {
75 end = strtoll(str, &endptr, 0);
76 if (errno == 0 && endptr > str && start <= end &&
77 (start > INT64_MAX - 65536 ||
78 end < start + 65536)) {
79 if (*endptr == '\0') {
80 cur = g_malloc0(sizeof(*cur));
81 range_set_bounds(cur, start, end);
82 siv->ranges = range_list_insert(siv->ranges, cur);
85 } else if (*endptr == ',') {
87 cur = g_malloc0(sizeof(*cur));
88 range_set_bounds(cur, start, end);
89 siv->ranges = range_list_insert(siv->ranges, cur);
97 } else if (*endptr == ',') {
99 cur = g_malloc0(sizeof(*cur));
100 range_set_bounds(cur, start, start);
101 siv->ranges = range_list_insert(siv->ranges, cur);
113 g_list_foreach(siv->ranges, free_range, NULL);
114 g_list_free(siv->ranges);
116 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
117 "an int64 value or range");
122 start_list(Visitor *v, const char *name, GenericList **list, size_t size,
125 StringInputVisitor *siv = to_siv(v);
127 /* We don't support visits without a list */
131 if (parse_str(siv, name, errp) < 0) {
136 siv->cur_range = g_list_first(siv->ranges);
137 if (siv->cur_range) {
138 Range *r = siv->cur_range->data;
140 siv->cur = range_lob(r);
142 *list = g_malloc0(size);
148 static GenericList *next_list(Visitor *v, GenericList *tail, size_t size)
150 StringInputVisitor *siv = to_siv(v);
153 if (!siv->ranges || !siv->cur_range) {
157 r = siv->cur_range->data;
162 if (!range_contains(r, siv->cur)) {
163 siv->cur_range = g_list_next(siv->cur_range);
164 if (!siv->cur_range) {
167 r = siv->cur_range->data;
171 siv->cur = range_lob(r);
174 tail->next = g_malloc0(size);
178 static void check_list(Visitor *v, Error **errp)
180 const StringInputVisitor *siv = to_siv(v);
184 if (!siv->ranges || !siv->cur_range) {
188 r = siv->cur_range->data;
193 if (!range_contains(r, siv->cur)) {
194 cur_range = g_list_next(siv->cur_range);
204 error_setg(errp, "Range contains too many values");
207 static void end_list(Visitor *v, void **obj)
209 StringInputVisitor *siv = to_siv(v);
211 assert(siv->list == obj);
214 static void parse_type_int64(Visitor *v, const char *name, int64_t *obj,
217 StringInputVisitor *siv = to_siv(v);
219 if (parse_str(siv, name, errp) < 0) {
227 if (!siv->cur_range) {
230 siv->cur_range = g_list_first(siv->ranges);
231 if (!siv->cur_range) {
235 r = siv->cur_range->data;
240 siv->cur = range_lob(r);
248 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
249 "an int64 value or range");
252 static void parse_type_uint64(Visitor *v, const char *name, uint64_t *obj,
255 /* FIXME: parse_type_int64 mishandles values over INT64_MAX */
258 parse_type_int64(v, name, &i, &err);
260 error_propagate(errp, err);
266 static void parse_type_size(Visitor *v, const char *name, uint64_t *obj,
269 StringInputVisitor *siv = to_siv(v);
273 parse_option_size(name, siv->string, &val, &err);
275 error_propagate(errp, err);
282 static void parse_type_bool(Visitor *v, const char *name, bool *obj,
285 StringInputVisitor *siv = to_siv(v);
287 if (!strcasecmp(siv->string, "on") ||
288 !strcasecmp(siv->string, "yes") ||
289 !strcasecmp(siv->string, "true")) {
293 if (!strcasecmp(siv->string, "off") ||
294 !strcasecmp(siv->string, "no") ||
295 !strcasecmp(siv->string, "false")) {
300 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
304 static void parse_type_str(Visitor *v, const char *name, char **obj,
307 StringInputVisitor *siv = to_siv(v);
309 *obj = g_strdup(siv->string);
312 static void parse_type_number(Visitor *v, const char *name, double *obj,
315 StringInputVisitor *siv = to_siv(v);
316 char *endp = (char *) siv->string;
320 val = strtod(siv->string, &endp);
321 if (errno || endp == siv->string || *endp) {
322 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
330 static void parse_type_null(Visitor *v, const char *name, QNull **obj,
333 StringInputVisitor *siv = to_siv(v);
337 if (!siv->string || siv->string[0]) {
338 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
346 static void string_input_free(Visitor *v)
348 StringInputVisitor *siv = to_siv(v);
350 g_list_foreach(siv->ranges, free_range, NULL);
351 g_list_free(siv->ranges);
355 Visitor *string_input_visitor_new(const char *str)
357 StringInputVisitor *v;
360 v = g_malloc0(sizeof(*v));
362 v->visitor.type = VISITOR_INPUT;
363 v->visitor.type_int64 = parse_type_int64;
364 v->visitor.type_uint64 = parse_type_uint64;
365 v->visitor.type_size = parse_type_size;
366 v->visitor.type_bool = parse_type_bool;
367 v->visitor.type_str = parse_type_str;
368 v->visitor.type_number = parse_type_number;
369 v->visitor.type_null = parse_type_null;
370 v->visitor.start_list = start_list;
371 v->visitor.next_list = next_list;
372 v->visitor.check_list = check_list;
373 v->visitor.end_list = end_list;
374 v->visitor.free = string_input_free;