Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 1 | /* |
| 2 | * String parsing 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" |
Paolo Bonzini | 7b1b5d1 | 2012-12-17 18:19:43 +0100 | [diff] [blame] | 14 | #include "qapi/string-input-visitor.h" |
| 15 | #include "qapi/visitor-impl.h" |
| 16 | #include "qapi/qmp/qerror.h" |
Paolo Bonzini | a5829cc | 2014-02-08 11:01:44 +0100 | [diff] [blame] | 17 | #include "qemu/option.h" |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 18 | |
| 19 | struct StringInputVisitor |
| 20 | { |
| 21 | Visitor visitor; |
| 22 | const char *string; |
| 23 | }; |
| 24 | |
| 25 | static void parse_type_int(Visitor *v, int64_t *obj, const char *name, |
| 26 | Error **errp) |
| 27 | { |
| 28 | StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v); |
| 29 | char *endp = (char *) siv->string; |
| 30 | long long val; |
| 31 | |
| 32 | errno = 0; |
| 33 | if (siv->string) { |
| 34 | val = strtoll(siv->string, &endp, 0); |
| 35 | } |
| 36 | if (!siv->string || errno || endp == siv->string || *endp) { |
| 37 | error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", |
| 38 | "integer"); |
| 39 | return; |
| 40 | } |
| 41 | |
| 42 | *obj = val; |
| 43 | } |
| 44 | |
Paolo Bonzini | a5829cc | 2014-02-08 11:01:44 +0100 | [diff] [blame] | 45 | static void parse_type_size(Visitor *v, uint64_t *obj, const char *name, |
| 46 | Error **errp) |
| 47 | { |
| 48 | StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v); |
| 49 | Error *err = NULL; |
| 50 | uint64_t val; |
| 51 | |
| 52 | if (siv->string) { |
| 53 | parse_option_size(name, siv->string, &val, &err); |
| 54 | } else { |
| 55 | error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", |
| 56 | "size"); |
| 57 | return; |
| 58 | } |
| 59 | if (err) { |
| 60 | error_propagate(errp, err); |
| 61 | return; |
| 62 | } |
| 63 | |
| 64 | *obj = val; |
| 65 | } |
| 66 | |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 67 | static void parse_type_bool(Visitor *v, bool *obj, const char *name, |
| 68 | Error **errp) |
| 69 | { |
| 70 | StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v); |
| 71 | |
| 72 | if (siv->string) { |
| 73 | if (!strcasecmp(siv->string, "on") || |
| 74 | !strcasecmp(siv->string, "yes") || |
| 75 | !strcasecmp(siv->string, "true")) { |
| 76 | *obj = true; |
| 77 | return; |
| 78 | } |
| 79 | if (!strcasecmp(siv->string, "off") || |
| 80 | !strcasecmp(siv->string, "no") || |
| 81 | !strcasecmp(siv->string, "false")) { |
| 82 | *obj = false; |
| 83 | return; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", |
| 88 | "boolean"); |
| 89 | } |
| 90 | |
| 91 | static void parse_type_str(Visitor *v, char **obj, const char *name, |
| 92 | Error **errp) |
| 93 | { |
| 94 | StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v); |
| 95 | if (siv->string) { |
| 96 | *obj = g_strdup(siv->string); |
| 97 | } else { |
| 98 | error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", |
| 99 | "string"); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | static void parse_type_number(Visitor *v, double *obj, const char *name, |
| 104 | Error **errp) |
| 105 | { |
| 106 | StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v); |
| 107 | char *endp = (char *) siv->string; |
| 108 | double val; |
| 109 | |
| 110 | errno = 0; |
| 111 | if (siv->string) { |
| 112 | val = strtod(siv->string, &endp); |
| 113 | } |
| 114 | if (!siv->string || errno || endp == siv->string || *endp) { |
| 115 | error_set(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", |
| 116 | "number"); |
| 117 | return; |
| 118 | } |
| 119 | |
| 120 | *obj = val; |
| 121 | } |
| 122 | |
| 123 | static void parse_start_optional(Visitor *v, bool *present, |
| 124 | const char *name, Error **errp) |
| 125 | { |
| 126 | StringInputVisitor *siv = DO_UPCAST(StringInputVisitor, visitor, v); |
| 127 | |
| 128 | if (!siv->string) { |
| 129 | *present = false; |
| 130 | return; |
| 131 | } |
| 132 | |
| 133 | *present = true; |
| 134 | } |
| 135 | |
| 136 | Visitor *string_input_get_visitor(StringInputVisitor *v) |
| 137 | { |
| 138 | return &v->visitor; |
| 139 | } |
| 140 | |
| 141 | void string_input_visitor_cleanup(StringInputVisitor *v) |
| 142 | { |
| 143 | g_free(v); |
| 144 | } |
| 145 | |
| 146 | StringInputVisitor *string_input_visitor_new(const char *str) |
| 147 | { |
| 148 | StringInputVisitor *v; |
| 149 | |
| 150 | v = g_malloc0(sizeof(*v)); |
| 151 | |
| 152 | v->visitor.type_enum = input_type_enum; |
| 153 | v->visitor.type_int = parse_type_int; |
Paolo Bonzini | a5829cc | 2014-02-08 11:01:44 +0100 | [diff] [blame] | 154 | v->visitor.type_size = parse_type_size; |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 155 | v->visitor.type_bool = parse_type_bool; |
| 156 | v->visitor.type_str = parse_type_str; |
| 157 | v->visitor.type_number = parse_type_number; |
| 158 | v->visitor.start_optional = parse_start_optional; |
| 159 | |
| 160 | v->string = str; |
| 161 | return v; |
| 162 | } |