mirror of https://gitee.com/openkylin/qemu.git
139 lines
3.5 KiB
C
139 lines
3.5 KiB
C
/*
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* String parsing visitor
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*
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* Copyright Red Hat, Inc. 2012
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*
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* Author: Paolo Bonzini <pbonzini@redhat.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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#include "qemu-common.h"
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#include "qapi/string-input-visitor.h"
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#include "qapi/visitor-impl.h"
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#include "qapi/qmp/qerror.h"
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struct StringInputVisitor
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{
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Visitor visitor;
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const char *string;
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};
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static void parse_type_int(Visitor *v, int64_t *obj, const char *name,
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Error **errp)
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{
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StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v);
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char *endp = (char *) siv->string;
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long long val;
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errno = 0;
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if (siv->string) {
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val = strtoll(siv->string, &endp, 0);
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}
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if (!siv->string || errno || endp == siv->string || *endp) {
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error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
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"integer");
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return;
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}
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*obj = val;
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}
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static void parse_type_bool(Visitor *v, bool *obj, const char *name,
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Error **errp)
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{
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StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v);
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if (siv->string) {
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if (!strcasecmp(siv->string, "on") ||
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!strcasecmp(siv->string, "yes") ||
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!strcasecmp(siv->string, "true")) {
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*obj = true;
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return;
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}
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if (!strcasecmp(siv->string, "off") ||
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!strcasecmp(siv->string, "no") ||
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!strcasecmp(siv->string, "false")) {
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*obj = false;
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return;
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}
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}
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error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
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"boolean");
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}
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static void parse_type_str(Visitor *v, char **obj, const char *name,
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Error **errp)
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{
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StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v);
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if (siv->string) {
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*obj = g_strdup(siv->string);
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} else {
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error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
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"string");
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}
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}
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static void parse_type_number(Visitor *v, double *obj, const char *name,
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Error **errp)
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{
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StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v);
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char *endp = (char *) siv->string;
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double val;
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errno = 0;
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if (siv->string) {
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val = strtod(siv->string, &endp);
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}
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if (!siv->string || errno || endp == siv->string || *endp) {
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error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
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"number");
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return;
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}
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*obj = val;
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}
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static void parse_start_optional(Visitor *v, bool *present,
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const char *name, Error **errp)
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{
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StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v);
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if (!siv->string) {
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*present = false;
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return;
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}
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*present = true;
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}
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Visitor *string_input_get_visitor(StringInputVisitor *v)
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{
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return &v->visitor;
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}
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void string_input_visitor_cleanup(StringInputVisitor *v)
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{
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g_free(v);
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}
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StringInputVisitor *string_input_visitor_new(const char *str)
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{
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StringInputVisitor *v;
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v = g_malloc0(sizeof(*v));
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v->visitor.type_enum = input_type_enum;
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v->visitor.type_int = parse_type_int;
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v->visitor.type_bool = parse_type_bool;
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v->visitor.type_str = parse_type_str;
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v->visitor.type_number = parse_type_number;
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v->visitor.start_optional = parse_start_optional;
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v->string = str;
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return v;
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}
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