mirror of
https://github.com/xemu-project/xemu.git
synced 2024-12-05 18:27:42 +00:00
a733371214
This may be used for deprecated object properties that are kept for backwards compatibility. Signed-off-by: Greg Kurz <groug@kaod.org> Reviewed-by: Markus Armbruster <armbru@redhat.com> Tested-by: Andrea Bolognani <abologna@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
372 lines
8.9 KiB
C
372 lines
8.9 KiB
C
/*
|
|
* String parsing visitor
|
|
*
|
|
* Copyright Red Hat, Inc. 2012-2016
|
|
*
|
|
* Author: Paolo Bonzini <pbonzini@redhat.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qapi/error.h"
|
|
#include "qemu-common.h"
|
|
#include "qapi/string-input-visitor.h"
|
|
#include "qapi/visitor-impl.h"
|
|
#include "qapi/qmp/qerror.h"
|
|
#include "qemu/option.h"
|
|
#include "qemu/queue.h"
|
|
#include "qemu/range.h"
|
|
|
|
|
|
struct StringInputVisitor
|
|
{
|
|
Visitor visitor;
|
|
|
|
GList *ranges;
|
|
GList *cur_range;
|
|
int64_t cur;
|
|
|
|
const char *string;
|
|
void *list; /* Only needed for sanity checking the caller */
|
|
};
|
|
|
|
static StringInputVisitor *to_siv(Visitor *v)
|
|
{
|
|
return container_of(v, StringInputVisitor, visitor);
|
|
}
|
|
|
|
static void free_range(void *range, void *dummy)
|
|
{
|
|
g_free(range);
|
|
}
|
|
|
|
static int parse_str(StringInputVisitor *siv, const char *name, Error **errp)
|
|
{
|
|
char *str = (char *) siv->string;
|
|
long long start, end;
|
|
Range *cur;
|
|
char *endptr;
|
|
|
|
if (siv->ranges) {
|
|
return 0;
|
|
}
|
|
|
|
if (!*str) {
|
|
return 0;
|
|
}
|
|
|
|
do {
|
|
errno = 0;
|
|
start = strtoll(str, &endptr, 0);
|
|
if (errno == 0 && endptr > str) {
|
|
if (*endptr == '\0') {
|
|
cur = g_malloc0(sizeof(*cur));
|
|
range_set_bounds(cur, start, start);
|
|
siv->ranges = range_list_insert(siv->ranges, cur);
|
|
cur = NULL;
|
|
str = NULL;
|
|
} else if (*endptr == '-') {
|
|
str = endptr + 1;
|
|
errno = 0;
|
|
end = strtoll(str, &endptr, 0);
|
|
if (errno == 0 && endptr > str && start <= end &&
|
|
(start > INT64_MAX - 65536 ||
|
|
end < start + 65536)) {
|
|
if (*endptr == '\0') {
|
|
cur = g_malloc0(sizeof(*cur));
|
|
range_set_bounds(cur, start, end);
|
|
siv->ranges = range_list_insert(siv->ranges, cur);
|
|
cur = NULL;
|
|
str = NULL;
|
|
} else if (*endptr == ',') {
|
|
str = endptr + 1;
|
|
cur = g_malloc0(sizeof(*cur));
|
|
range_set_bounds(cur, start, end);
|
|
siv->ranges = range_list_insert(siv->ranges, cur);
|
|
cur = NULL;
|
|
} else {
|
|
goto error;
|
|
}
|
|
} else {
|
|
goto error;
|
|
}
|
|
} else if (*endptr == ',') {
|
|
str = endptr + 1;
|
|
cur = g_malloc0(sizeof(*cur));
|
|
range_set_bounds(cur, start, start);
|
|
siv->ranges = range_list_insert(siv->ranges, cur);
|
|
cur = NULL;
|
|
} else {
|
|
goto error;
|
|
}
|
|
} else {
|
|
goto error;
|
|
}
|
|
} while (str);
|
|
|
|
return 0;
|
|
error:
|
|
g_list_foreach(siv->ranges, free_range, NULL);
|
|
g_list_free(siv->ranges);
|
|
siv->ranges = NULL;
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
|
|
"an int64 value or range");
|
|
return -1;
|
|
}
|
|
|
|
static void
|
|
start_list(Visitor *v, const char *name, GenericList **list, size_t size,
|
|
Error **errp)
|
|
{
|
|
StringInputVisitor *siv = to_siv(v);
|
|
|
|
/* We don't support visits without a list */
|
|
assert(list);
|
|
siv->list = list;
|
|
|
|
if (parse_str(siv, name, errp) < 0) {
|
|
*list = NULL;
|
|
return;
|
|
}
|
|
|
|
siv->cur_range = g_list_first(siv->ranges);
|
|
if (siv->cur_range) {
|
|
Range *r = siv->cur_range->data;
|
|
if (r) {
|
|
siv->cur = range_lob(r);
|
|
}
|
|
*list = g_malloc0(size);
|
|
} else {
|
|
*list = NULL;
|
|
}
|
|
}
|
|
|
|
static GenericList *next_list(Visitor *v, GenericList *tail, size_t size)
|
|
{
|
|
StringInputVisitor *siv = to_siv(v);
|
|
Range *r;
|
|
|
|
if (!siv->ranges || !siv->cur_range) {
|
|
return NULL;
|
|
}
|
|
|
|
r = siv->cur_range->data;
|
|
if (!r) {
|
|
return NULL;
|
|
}
|
|
|
|
if (!range_contains(r, siv->cur)) {
|
|
siv->cur_range = g_list_next(siv->cur_range);
|
|
if (!siv->cur_range) {
|
|
return NULL;
|
|
}
|
|
r = siv->cur_range->data;
|
|
if (!r) {
|
|
return NULL;
|
|
}
|
|
siv->cur = range_lob(r);
|
|
}
|
|
|
|
tail->next = g_malloc0(size);
|
|
return tail->next;
|
|
}
|
|
|
|
static void check_list(Visitor *v, Error **errp)
|
|
{
|
|
const StringInputVisitor *siv = to_siv(v);
|
|
Range *r;
|
|
GList *cur_range;
|
|
|
|
if (!siv->ranges || !siv->cur_range) {
|
|
return;
|
|
}
|
|
|
|
r = siv->cur_range->data;
|
|
if (!r) {
|
|
return;
|
|
}
|
|
|
|
if (!range_contains(r, siv->cur)) {
|
|
cur_range = g_list_next(siv->cur_range);
|
|
if (!cur_range) {
|
|
return;
|
|
}
|
|
r = cur_range->data;
|
|
if (!r) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
error_setg(errp, "Range contains too many values");
|
|
}
|
|
|
|
static void end_list(Visitor *v, void **obj)
|
|
{
|
|
StringInputVisitor *siv = to_siv(v);
|
|
|
|
assert(siv->list == obj);
|
|
}
|
|
|
|
static void parse_type_int64(Visitor *v, const char *name, int64_t *obj,
|
|
Error **errp)
|
|
{
|
|
StringInputVisitor *siv = to_siv(v);
|
|
|
|
if (parse_str(siv, name, errp) < 0) {
|
|
return;
|
|
}
|
|
|
|
if (!siv->ranges) {
|
|
goto error;
|
|
}
|
|
|
|
if (!siv->cur_range) {
|
|
Range *r;
|
|
|
|
siv->cur_range = g_list_first(siv->ranges);
|
|
if (!siv->cur_range) {
|
|
goto error;
|
|
}
|
|
|
|
r = siv->cur_range->data;
|
|
if (!r) {
|
|
goto error;
|
|
}
|
|
|
|
siv->cur = range_lob(r);
|
|
}
|
|
|
|
*obj = siv->cur;
|
|
siv->cur++;
|
|
return;
|
|
|
|
error:
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
|
|
"an int64 value or range");
|
|
}
|
|
|
|
static void parse_type_uint64(Visitor *v, const char *name, uint64_t *obj,
|
|
Error **errp)
|
|
{
|
|
/* FIXME: parse_type_int64 mishandles values over INT64_MAX */
|
|
int64_t i;
|
|
Error *err = NULL;
|
|
parse_type_int64(v, name, &i, &err);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
} else {
|
|
*obj = i;
|
|
}
|
|
}
|
|
|
|
static void parse_type_size(Visitor *v, const char *name, uint64_t *obj,
|
|
Error **errp)
|
|
{
|
|
StringInputVisitor *siv = to_siv(v);
|
|
Error *err = NULL;
|
|
uint64_t val;
|
|
|
|
parse_option_size(name, siv->string, &val, &err);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
return;
|
|
}
|
|
|
|
*obj = val;
|
|
}
|
|
|
|
static void parse_type_bool(Visitor *v, const char *name, bool *obj,
|
|
Error **errp)
|
|
{
|
|
StringInputVisitor *siv = to_siv(v);
|
|
|
|
if (!strcasecmp(siv->string, "on") ||
|
|
!strcasecmp(siv->string, "yes") ||
|
|
!strcasecmp(siv->string, "true")) {
|
|
*obj = true;
|
|
return;
|
|
}
|
|
if (!strcasecmp(siv->string, "off") ||
|
|
!strcasecmp(siv->string, "no") ||
|
|
!strcasecmp(siv->string, "false")) {
|
|
*obj = false;
|
|
return;
|
|
}
|
|
|
|
error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
|
|
"boolean");
|
|
}
|
|
|
|
static void parse_type_str(Visitor *v, const char *name, char **obj,
|
|
Error **errp)
|
|
{
|
|
StringInputVisitor *siv = to_siv(v);
|
|
|
|
*obj = g_strdup(siv->string);
|
|
}
|
|
|
|
static void parse_type_number(Visitor *v, const char *name, double *obj,
|
|
Error **errp)
|
|
{
|
|
StringInputVisitor *siv = to_siv(v);
|
|
char *endp = (char *) siv->string;
|
|
double val;
|
|
|
|
errno = 0;
|
|
val = strtod(siv->string, &endp);
|
|
if (errno || endp == siv->string || *endp) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
|
|
"number");
|
|
return;
|
|
}
|
|
|
|
*obj = val;
|
|
}
|
|
|
|
static void parse_type_null(Visitor *v, const char *name, Error **errp)
|
|
{
|
|
StringInputVisitor *siv = to_siv(v);
|
|
|
|
if (!siv->string || siv->string[0]) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
|
|
"null");
|
|
}
|
|
}
|
|
|
|
static void string_input_free(Visitor *v)
|
|
{
|
|
StringInputVisitor *siv = to_siv(v);
|
|
|
|
g_list_foreach(siv->ranges, free_range, NULL);
|
|
g_list_free(siv->ranges);
|
|
g_free(siv);
|
|
}
|
|
|
|
Visitor *string_input_visitor_new(const char *str)
|
|
{
|
|
StringInputVisitor *v;
|
|
|
|
assert(str);
|
|
v = g_malloc0(sizeof(*v));
|
|
|
|
v->visitor.type = VISITOR_INPUT;
|
|
v->visitor.type_int64 = parse_type_int64;
|
|
v->visitor.type_uint64 = parse_type_uint64;
|
|
v->visitor.type_size = parse_type_size;
|
|
v->visitor.type_bool = parse_type_bool;
|
|
v->visitor.type_str = parse_type_str;
|
|
v->visitor.type_number = parse_type_number;
|
|
v->visitor.type_null = parse_type_null;
|
|
v->visitor.start_list = start_list;
|
|
v->visitor.next_list = next_list;
|
|
v->visitor.check_list = check_list;
|
|
v->visitor.end_list = end_list;
|
|
v->visitor.free = string_input_free;
|
|
|
|
v->string = str;
|
|
return &v->visitor;
|
|
}
|