author | Mikael Berthe <mikael@lilotux.net> |
Sun, 16 Feb 2020 18:54:01 +0100 | |
changeset 251 | 1c52a0eeb952 |
parent 242 | 2a9ec03fe5a1 |
child 256 | 6d9efbef00a9 |
permissions | -rw-r--r-- |
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// Package yaml implements YAML support for the Go language. |
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// |
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// Source code and other details for the project are available at GitHub: |
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// |
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// https://github.com/go-yaml/yaml |
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// |
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package yaml |
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|
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import ( |
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"errors" |
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"fmt" |
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"io" |
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"reflect" |
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"strings" |
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"sync" |
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) |
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17 |
|
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// MapSlice encodes and decodes as a YAML map. |
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// The order of keys is preserved when encoding and decoding. |
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type MapSlice []MapItem |
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// MapItem is an item in a MapSlice. |
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type MapItem struct { |
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Key, Value interface{} |
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} |
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// The Unmarshaler interface may be implemented by types to customize their |
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// behavior when being unmarshaled from a YAML document. The UnmarshalYAML |
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// method receives a function that may be called to unmarshal the original |
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// YAML value into a field or variable. It is safe to call the unmarshal |
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// function parameter more than once if necessary. |
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type Unmarshaler interface { |
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UnmarshalYAML(unmarshal func(interface{}) error) error |
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} |
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// The Marshaler interface may be implemented by types to customize their |
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// behavior when being marshaled into a YAML document. The returned value |
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// is marshaled in place of the original value implementing Marshaler. |
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// |
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// If an error is returned by MarshalYAML, the marshaling procedure stops |
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// and returns with the provided error. |
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type Marshaler interface { |
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MarshalYAML() (interface{}, error) |
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} |
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// Unmarshal decodes the first document found within the in byte slice |
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// and assigns decoded values into the out value. |
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// |
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// Maps and pointers (to a struct, string, int, etc) are accepted as out |
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// values. If an internal pointer within a struct is not initialized, |
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// the yaml package will initialize it if necessary for unmarshalling |
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// the provided data. The out parameter must not be nil. |
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// |
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// The type of the decoded values should be compatible with the respective |
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// values in out. If one or more values cannot be decoded due to a type |
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// mismatches, decoding continues partially until the end of the YAML |
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// content, and a *yaml.TypeError is returned with details for all |
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// missed values. |
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// |
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// Struct fields are only unmarshalled if they are exported (have an |
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// upper case first letter), and are unmarshalled using the field name |
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// lowercased as the default key. Custom keys may be defined via the |
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// "yaml" name in the field tag: the content preceding the first comma |
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// is used as the key, and the following comma-separated options are |
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// used to tweak the marshalling process (see Marshal). |
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// Conflicting names result in a runtime error. |
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// |
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// For example: |
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// |
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// type T struct { |
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// F int `yaml:"a,omitempty"` |
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// B int |
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// } |
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// var t T |
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// yaml.Unmarshal([]byte("a: 1\nb: 2"), &t) |
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// |
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// See the documentation of Marshal for the format of tags and a list of |
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// supported tag options. |
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// |
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func Unmarshal(in []byte, out interface{}) (err error) { |
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return unmarshal(in, out, false) |
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} |
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83 |
|
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// UnmarshalStrict is like Unmarshal except that any fields that are found |
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// in the data that do not have corresponding struct members, or mapping |
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// keys that are duplicates, will result in |
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// an error. |
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88 |
func UnmarshalStrict(in []byte, out interface{}) (err error) { |
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return unmarshal(in, out, true) |
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} |
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91 |
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251 | 92 |
// A Decoder reads and decodes YAML values from an input stream. |
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93 |
type Decoder struct { |
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strict bool |
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95 |
parser *parser |
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} |
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97 |
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// NewDecoder returns a new decoder that reads from r. |
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// |
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// The decoder introduces its own buffering and may read |
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// data from r beyond the YAML values requested. |
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102 |
func NewDecoder(r io.Reader) *Decoder { |
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103 |
return &Decoder{ |
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parser: newParserFromReader(r), |
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105 |
} |
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106 |
} |
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107 |
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108 |
// SetStrict sets whether strict decoding behaviour is enabled when |
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109 |
// decoding items in the data (see UnmarshalStrict). By default, decoding is not strict. |
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110 |
func (dec *Decoder) SetStrict(strict bool) { |
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dec.strict = strict |
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} |
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113 |
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114 |
// Decode reads the next YAML-encoded value from its input |
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115 |
// and stores it in the value pointed to by v. |
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116 |
// |
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117 |
// See the documentation for Unmarshal for details about the |
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118 |
// conversion of YAML into a Go value. |
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119 |
func (dec *Decoder) Decode(v interface{}) (err error) { |
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120 |
d := newDecoder(dec.strict) |
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121 |
defer handleErr(&err) |
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122 |
node := dec.parser.parse() |
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123 |
if node == nil { |
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124 |
return io.EOF |
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125 |
} |
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126 |
out := reflect.ValueOf(v) |
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127 |
if out.Kind() == reflect.Ptr && !out.IsNil() { |
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128 |
out = out.Elem() |
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129 |
} |
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130 |
d.unmarshal(node, out) |
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131 |
if len(d.terrors) > 0 { |
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132 |
return &TypeError{d.terrors} |
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133 |
} |
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134 |
return nil |
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135 |
} |
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136 |
|
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137 |
func unmarshal(in []byte, out interface{}, strict bool) (err error) { |
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|
138 |
defer handleErr(&err) |
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|
139 |
d := newDecoder(strict) |
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140 |
p := newParser(in) |
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|
141 |
defer p.destroy() |
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|
142 |
node := p.parse() |
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|
143 |
if node != nil { |
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144 |
v := reflect.ValueOf(out) |
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145 |
if v.Kind() == reflect.Ptr && !v.IsNil() { |
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146 |
v = v.Elem() |
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147 |
} |
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148 |
d.unmarshal(node, v) |
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149 |
} |
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150 |
if len(d.terrors) > 0 { |
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151 |
return &TypeError{d.terrors} |
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152 |
} |
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153 |
return nil |
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154 |
} |
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155 |
|
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156 |
// Marshal serializes the value provided into a YAML document. The structure |
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157 |
// of the generated document will reflect the structure of the value itself. |
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158 |
// Maps and pointers (to struct, string, int, etc) are accepted as the in value. |
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159 |
// |
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160 |
// Struct fields are only marshalled if they are exported (have an upper case |
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161 |
// first letter), and are marshalled using the field name lowercased as the |
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162 |
// default key. Custom keys may be defined via the "yaml" name in the field |
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163 |
// tag: the content preceding the first comma is used as the key, and the |
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|
164 |
// following comma-separated options are used to tweak the marshalling process. |
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165 |
// Conflicting names result in a runtime error. |
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|
166 |
// |
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|
167 |
// The field tag format accepted is: |
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168 |
// |
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169 |
// `(...) yaml:"[<key>][,<flag1>[,<flag2>]]" (...)` |
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170 |
// |
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171 |
// The following flags are currently supported: |
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172 |
// |
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173 |
// omitempty Only include the field if it's not set to the zero |
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174 |
// value for the type or to empty slices or maps. |
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175 |
// Zero valued structs will be omitted if all their public |
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176 |
// fields are zero, unless they implement an IsZero |
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177 |
// method (see the IsZeroer interface type), in which |
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178 |
// case the field will be included if that method returns true. |
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|
179 |
// |
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180 |
// flow Marshal using a flow style (useful for structs, |
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|
181 |
// sequences and maps). |
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|
182 |
// |
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|
183 |
// inline Inline the field, which must be a struct or a map, |
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|
184 |
// causing all of its fields or keys to be processed as if |
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|
185 |
// they were part of the outer struct. For maps, keys must |
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|
186 |
// not conflict with the yaml keys of other struct fields. |
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|
187 |
// |
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188 |
// In addition, if the key is "-", the field is ignored. |
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|
189 |
// |
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|
190 |
// For example: |
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|
191 |
// |
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|
192 |
// type T struct { |
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|
193 |
// F int `yaml:"a,omitempty"` |
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|
194 |
// B int |
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|
195 |
// } |
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|
196 |
// yaml.Marshal(&T{B: 2}) // Returns "b: 2\n" |
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|
197 |
// yaml.Marshal(&T{F: 1}} // Returns "a: 1\nb: 0\n" |
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|
198 |
// |
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|
199 |
func Marshal(in interface{}) (out []byte, err error) { |
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|
200 |
defer handleErr(&err) |
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|
201 |
e := newEncoder() |
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|
202 |
defer e.destroy() |
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|
203 |
e.marshalDoc("", reflect.ValueOf(in)) |
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|
204 |
e.finish() |
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|
205 |
out = e.out |
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|
206 |
return |
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|
207 |
} |
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|
208 |
|
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|
209 |
// An Encoder writes YAML values to an output stream. |
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|
210 |
type Encoder struct { |
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|
211 |
encoder *encoder |
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|
212 |
} |
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|
213 |
|
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|
214 |
// NewEncoder returns a new encoder that writes to w. |
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|
215 |
// The Encoder should be closed after use to flush all data |
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|
216 |
// to w. |
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|
217 |
func NewEncoder(w io.Writer) *Encoder { |
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|
218 |
return &Encoder{ |
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|
219 |
encoder: newEncoderWithWriter(w), |
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|
220 |
} |
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|
221 |
} |
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|
222 |
|
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|
223 |
// Encode writes the YAML encoding of v to the stream. |
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|
224 |
// If multiple items are encoded to the stream, the |
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|
225 |
// second and subsequent document will be preceded |
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|
226 |
// with a "---" document separator, but the first will not. |
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|
227 |
// |
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|
228 |
// See the documentation for Marshal for details about the conversion of Go |
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|
229 |
// values to YAML. |
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|
230 |
func (e *Encoder) Encode(v interface{}) (err error) { |
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|
231 |
defer handleErr(&err) |
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|
232 |
e.encoder.marshalDoc("", reflect.ValueOf(v)) |
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|
233 |
return nil |
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|
234 |
} |
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|
235 |
|
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|
236 |
// Close closes the encoder by writing any remaining data. |
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|
237 |
// It does not write a stream terminating string "...". |
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|
238 |
func (e *Encoder) Close() (err error) { |
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|
239 |
defer handleErr(&err) |
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|
240 |
e.encoder.finish() |
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|
241 |
return nil |
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|
242 |
} |
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changeset
|
243 |
|
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|
244 |
func handleErr(err *error) { |
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|
245 |
if v := recover(); v != nil { |
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|
246 |
if e, ok := v.(yamlError); ok { |
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|
247 |
*err = e.err |
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|
248 |
} else { |
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249 |
panic(v) |
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250 |
} |
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251 |
} |
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252 |
} |
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253 |
|
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254 |
type yamlError struct { |
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255 |
err error |
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256 |
} |
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257 |
|
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258 |
func fail(err error) { |
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259 |
panic(yamlError{err}) |
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260 |
} |
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261 |
|
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262 |
func failf(format string, args ...interface{}) { |
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263 |
panic(yamlError{fmt.Errorf("yaml: "+format, args...)}) |
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264 |
} |
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265 |
|
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266 |
// A TypeError is returned by Unmarshal when one or more fields in |
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267 |
// the YAML document cannot be properly decoded into the requested |
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268 |
// types. When this error is returned, the value is still |
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269 |
// unmarshaled partially. |
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270 |
type TypeError struct { |
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271 |
Errors []string |
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272 |
} |
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273 |
|
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274 |
func (e *TypeError) Error() string { |
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275 |
return fmt.Sprintf("yaml: unmarshal errors:\n %s", strings.Join(e.Errors, "\n ")) |
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276 |
} |
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277 |
|
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278 |
// -------------------------------------------------------------------------- |
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279 |
// Maintain a mapping of keys to structure field indexes |
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280 |
|
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281 |
// The code in this section was copied from mgo/bson. |
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282 |
|
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283 |
// structInfo holds details for the serialization of fields of |
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284 |
// a given struct. |
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285 |
type structInfo struct { |
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286 |
FieldsMap map[string]fieldInfo |
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287 |
FieldsList []fieldInfo |
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288 |
|
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289 |
// InlineMap is the number of the field in the struct that |
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290 |
// contains an ,inline map, or -1 if there's none. |
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291 |
InlineMap int |
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292 |
} |
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293 |
|
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294 |
type fieldInfo struct { |
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295 |
Key string |
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|
296 |
Num int |
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|
297 |
OmitEmpty bool |
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|
298 |
Flow bool |
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299 |
// Id holds the unique field identifier, so we can cheaply |
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300 |
// check for field duplicates without maintaining an extra map. |
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301 |
Id int |
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302 |
|
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303 |
// Inline holds the field index if the field is part of an inlined struct. |
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|
304 |
Inline []int |
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|
305 |
} |
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|
306 |
|
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|
307 |
var structMap = make(map[reflect.Type]*structInfo) |
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|
308 |
var fieldMapMutex sync.RWMutex |
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|
309 |
|
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|
310 |
func getStructInfo(st reflect.Type) (*structInfo, error) { |
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311 |
fieldMapMutex.RLock() |
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|
312 |
sinfo, found := structMap[st] |
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|
313 |
fieldMapMutex.RUnlock() |
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|
314 |
if found { |
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|
315 |
return sinfo, nil |
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|
316 |
} |
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|
317 |
|
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|
318 |
n := st.NumField() |
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|
319 |
fieldsMap := make(map[string]fieldInfo) |
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|
320 |
fieldsList := make([]fieldInfo, 0, n) |
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|
321 |
inlineMap := -1 |
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|
322 |
for i := 0; i != n; i++ { |
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|
323 |
field := st.Field(i) |
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|
324 |
if field.PkgPath != "" && !field.Anonymous { |
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|
325 |
continue // Private field |
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|
326 |
} |
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|
327 |
|
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|
328 |
info := fieldInfo{Num: i} |
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|
329 |
|
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|
330 |
tag := field.Tag.Get("yaml") |
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|
331 |
if tag == "" && strings.Index(string(field.Tag), ":") < 0 { |
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|
332 |
tag = string(field.Tag) |
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|
333 |
} |
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|
334 |
if tag == "-" { |
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changeset
|
335 |
continue |
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changeset
|
336 |
} |
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changeset
|
337 |
|
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|
338 |
inline := false |
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|
339 |
fields := strings.Split(tag, ",") |
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|
340 |
if len(fields) > 1 { |
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|
341 |
for _, flag := range fields[1:] { |
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|
342 |
switch flag { |
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|
343 |
case "omitempty": |
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|
344 |
info.OmitEmpty = true |
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|
345 |
case "flow": |
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|
346 |
info.Flow = true |
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|
347 |
case "inline": |
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|
348 |
inline = true |
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|
349 |
default: |
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|
350 |
return nil, errors.New(fmt.Sprintf("Unsupported flag %q in tag %q of type %s", flag, tag, st)) |
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changeset
|
351 |
} |
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changeset
|
352 |
} |
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|
353 |
tag = fields[0] |
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changeset
|
354 |
} |
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changeset
|
355 |
|
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|
356 |
if inline { |
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|
357 |
switch field.Type.Kind() { |
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|
358 |
case reflect.Map: |
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|
359 |
if inlineMap >= 0 { |
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changeset
|
360 |
return nil, errors.New("Multiple ,inline maps in struct " + st.String()) |
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changeset
|
361 |
} |
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changeset
|
362 |
if field.Type.Key() != reflect.TypeOf("") { |
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|
363 |
return nil, errors.New("Option ,inline needs a map with string keys in struct " + st.String()) |
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|
364 |
} |
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|
365 |
inlineMap = info.Num |
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|
366 |
case reflect.Struct: |
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|
367 |
sinfo, err := getStructInfo(field.Type) |
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changeset
|
368 |
if err != nil { |
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changeset
|
369 |
return nil, err |
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changeset
|
370 |
} |
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changeset
|
371 |
for _, finfo := range sinfo.FieldsList { |
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|
372 |
if _, found := fieldsMap[finfo.Key]; found { |
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|
373 |
msg := "Duplicated key '" + finfo.Key + "' in struct " + st.String() |
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|
374 |
return nil, errors.New(msg) |
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|
375 |
} |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
376 |
if finfo.Inline == nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
377 |
finfo.Inline = []int{i, finfo.Num} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
378 |
} else { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
379 |
finfo.Inline = append([]int{i}, finfo.Inline...) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
380 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
381 |
finfo.Id = len(fieldsList) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
382 |
fieldsMap[finfo.Key] = finfo |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
383 |
fieldsList = append(fieldsList, finfo) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
384 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
385 |
default: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
386 |
//return nil, errors.New("Option ,inline needs a struct value or map field") |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
387 |
return nil, errors.New("Option ,inline needs a struct value field") |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
388 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
389 |
continue |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
390 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
391 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
392 |
if tag != "" { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
393 |
info.Key = tag |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
394 |
} else { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
395 |
info.Key = strings.ToLower(field.Name) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
396 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
397 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
398 |
if _, found = fieldsMap[info.Key]; found { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
399 |
msg := "Duplicated key '" + info.Key + "' in struct " + st.String() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
400 |
return nil, errors.New(msg) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
401 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
402 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
403 |
info.Id = len(fieldsList) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
404 |
fieldsList = append(fieldsList, info) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
405 |
fieldsMap[info.Key] = info |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
406 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
407 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
408 |
sinfo = &structInfo{ |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
409 |
FieldsMap: fieldsMap, |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
410 |
FieldsList: fieldsList, |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
411 |
InlineMap: inlineMap, |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
412 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
413 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
414 |
fieldMapMutex.Lock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
415 |
structMap[st] = sinfo |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
416 |
fieldMapMutex.Unlock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
417 |
return sinfo, nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
418 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
419 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
420 |
// IsZeroer is used to check whether an object is zero to |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
421 |
// determine whether it should be omitted when marshaling |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
422 |
// with the omitempty flag. One notable implementation |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
423 |
// is time.Time. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
424 |
type IsZeroer interface { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
425 |
IsZero() bool |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
426 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
427 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
428 |
func isZero(v reflect.Value) bool { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
429 |
kind := v.Kind() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
430 |
if z, ok := v.Interface().(IsZeroer); ok { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
431 |
if (kind == reflect.Ptr || kind == reflect.Interface) && v.IsNil() { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
432 |
return true |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
433 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
434 |
return z.IsZero() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
435 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
436 |
switch kind { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
437 |
case reflect.String: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
438 |
return len(v.String()) == 0 |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
439 |
case reflect.Interface, reflect.Ptr: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
440 |
return v.IsNil() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
441 |
case reflect.Slice: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
442 |
return v.Len() == 0 |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
443 |
case reflect.Map: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
444 |
return v.Len() == 0 |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
445 |
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
446 |
return v.Int() == 0 |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
447 |
case reflect.Float32, reflect.Float64: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
448 |
return v.Float() == 0 |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
449 |
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
450 |
return v.Uint() == 0 |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
451 |
case reflect.Bool: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
452 |
return !v.Bool() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
453 |
case reflect.Struct: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
454 |
vt := v.Type() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
455 |
for i := v.NumField() - 1; i >= 0; i-- { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
456 |
if vt.Field(i).PkgPath != "" { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
457 |
continue // Private field |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
458 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
459 |
if !isZero(v.Field(i)) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
460 |
return false |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
461 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
462 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
463 |
return true |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
464 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
465 |
return false |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
466 |
} |