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-rw-r--r--qapi/string-input-visitor.c138
1 files changed, 138 insertions, 0 deletions
diff --git a/qapi/string-input-visitor.c b/qapi/string-input-visitor.c
new file mode 100644
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--- /dev/null
+++ b/qapi/string-input-visitor.c
@@ -0,0 +1,138 @@
+/*
+ * 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;
+}
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