LXR qemu/qapi/string-output-visitor.c

   1/*
   2 * String printing Visitor
   3 *
   4 * Copyright Red Hat, Inc. 2012
   5 *
   6 * Author: Paolo Bonzini <pbonzini@redhat.com>
   7 *
   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.
  10 *
  11 */
  12
  13#include "qemu-common.h"
  14#include "qapi/string-output-visitor.h"
  15#include "qapi/visitor-impl.h"
  16#include "qapi/qmp/qerror.h"
  17
  18struct StringOutputVisitor
  19{
  20    Visitor visitor;
  21    char *string;
  22};
  23
  24static void string_output_set(StringOutputVisitor *sov, char *string)
  25{
  26    g_free(sov->string);
  27    sov->string = string;
  28}
  29
  30static void print_type_int(Visitor *v, int64_t *obj, const char *name,
  31                           Error **errp)
  32{
  33    StringOutputVisitor *sov = DO_UPCAST(StringOutputVisitor, visitor, v);
  34    string_output_set(sov, g_strdup_printf("%lld", (long long) *obj));
  35}
  36
  37static void print_type_bool(Visitor *v, bool *obj, const char *name,
  38                            Error **errp)
  39{
  40    StringOutputVisitor *sov = DO_UPCAST(StringOutputVisitor, visitor, v);
  41    string_output_set(sov, g_strdup(*obj ? "true" : "false"));
  42}
  43
  44static void print_type_str(Visitor *v, char **obj, const char *name,
  45                           Error **errp)
  46{
  47    StringOutputVisitor *sov = DO_UPCAST(StringOutputVisitor, visitor, v);
  48    string_output_set(sov, g_strdup(*obj ? *obj : ""));
  49}
  50
  51static void print_type_number(Visitor *v, double *obj, const char *name,
  52                              Error **errp)
  53{
  54    StringOutputVisitor *sov = DO_UPCAST(StringOutputVisitor, visitor, v);
  55    string_output_set(sov, g_strdup_printf("%f", *obj));
  56}
  57
  58char *string_output_get_string(StringOutputVisitor *sov)
  59{
  60    char *string = sov->string;
  61    sov->string = NULL;
  62    return string;
  63}
  64
  65Visitor *string_output_get_visitor(StringOutputVisitor *sov)
  66{
  67    return &sov->visitor;
  68}
  69
  70void string_output_visitor_cleanup(StringOutputVisitor *sov)
  71{
  72    g_free(sov->string);
  73    g_free(sov);
  74}
  75
  76StringOutputVisitor *string_output_visitor_new(void)
  77{
  78    StringOutputVisitor *v;
  79
  80    v = g_malloc0(sizeof(*v));
  81
  82    v->visitor.type_enum = output_type_enum;
  83    v->visitor.type_int = print_type_int;
  84    v->visitor.type_bool = print_type_bool;
  85    v->visitor.type_str = print_type_str;
  86    v->visitor.type_number = print_type_number;
  87
  88    return v;
  89}
  90