/* * String parsing visitor * * Copyright Red Hat, Inc. 2012 * * 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-common.h" #include "string-input-visitor.h" #include "qapi/qapi-visit-impl.h" #include "qerror.h" struct StringInputVisitor { Visitor visitor; const char *string; }; static void parse_type_int(Visitor *v, int64_t *obj, const char *name, Error **errp) { StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v); char *endp = (char *) siv->string; long long val; errno = 0; if (siv->string) { val = strtoll(siv->string, &endp, 0); } if (!siv->string || errno || endp == siv->string || *endp) { error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", "integer"); return; } *obj = val; } static void parse_type_bool(Visitor *v, bool *obj, const char *name, Error **errp) { StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v); if (siv->string) { 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_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", "boolean"); } static void parse_type_str(Visitor *v, char **obj, const char *name, Error **errp) { StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v); if (siv->string) { *obj = g_strdup(siv->string); } else { error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", "string"); } } static void parse_type_number(Visitor *v, double *obj, const char *name, Error **errp) { StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v); char *endp = (char *) siv->string; double val; errno = 0; if (siv->string) { val = strtod(siv->string, &endp); } if (!siv->string || errno || endp == siv->string || *endp) { error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", "number"); return; } *obj = val; } static void parse_start_optional(Visitor *v, bool *present, const char *name, Error **errp) { StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v); if (!siv->string) { *present = false; return; } *present = true; } Visitor *string_input_get_visitor(StringInputVisitor *v) { return &v->visitor; } void string_input_visitor_cleanup(StringInputVisitor *v) { g_free(v); } StringInputVisitor *string_input_visitor_new(const char *str) { StringInputVisitor *v; v = g_malloc0(sizeof(*v)); v->visitor.type_enum = input_type_enum; v->visitor.type_int = parse_type_int; v->visitor.type_bool = parse_type_bool; v->visitor.type_str = parse_type_str; v->visitor.type_number = parse_type_number; v->visitor.start_optional = parse_start_optional; v->string = str; return v; }