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 "string-output-visitor.h" 15 #include "qapi/qapi-visit-impl.h" 16 #include "qerror.h" 17 18 struct StringOutputVisitor 19 { 20 Visitor visitor; 21 char *string; 22 }; 23 24 static void string_output_set(StringOutputVisitor *sov, char *string) 25 { 26 g_free(sov->string); 27 sov->string = string; 28 } 29 30 static 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 37 static 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 44 static 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 51 static 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("%g", *obj)); 56 } 57 58 char *string_output_get_string(StringOutputVisitor *sov) 59 { 60 char *string = sov->string; 61 sov->string = NULL; 62 return string; 63 } 64 65 Visitor *string_output_get_visitor(StringOutputVisitor *sov) 66 { 67 return &sov->visitor; 68 } 69 70 void string_output_visitor_cleanup(StringOutputVisitor *sov) 71 { 72 g_free(sov->string); 73 g_free(sov); 74 } 75 76 StringOutputVisitor *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