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vendor/github.com/fatih/structs/README.md

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+# Structs [![GoDoc](http://img.shields.io/badge/go-documentation-blue.svg?style=flat-square)](http://godoc.org/github.com/fatih/structs) [![Build Status](http://img.shields.io/travis/fatih/structs.svg?style=flat-square)](https://travis-ci.org/fatih/structs) [![Coverage Status](http://img.shields.io/coveralls/fatih/structs.svg?style=flat-square)](https://coveralls.io/r/fatih/structs)
+
+Structs contains various utilities to work with Go (Golang) structs. It was
+initially used by me to convert a struct into a `map[string]interface{}`. With
+time I've added other utilities for structs.  It's basically a high level
+package based on primitives from the reflect package. Feel free to add new
+functions or improve the existing code.
+
+## Install
+
+```bash
+go get github.com/fatih/structs
+```
+
+## Usage and Examples
+
+Just like the standard lib `strings`, `bytes` and co packages, `structs` has
+many global functions to manipulate or organize your struct data. Lets define
+and declare a struct:
+
+```go
+type Server struct {
+	Name        string `json:"name,omitempty"`
+	ID          int
+	Enabled     bool
+	users       []string // not exported
+	http.Server          // embedded
+}
+
+server := &Server{
+	Name:    "gopher",
+	ID:      123456,
+	Enabled: true,
+}
+```
+
+```go
+// Convert a struct to a map[string]interface{}
+// => {"Name":"gopher", "ID":123456, "Enabled":true}
+m := structs.Map(server)
+
+// Convert the values of a struct to a []interface{}
+// => ["gopher", 123456, true]
+v := structs.Values(server)
+
+// Convert the names of a struct to a []string
+// (see "Names methods" for more info about fields)
+n := structs.Names(server)
+
+// Convert the values of a struct to a []*Field
+// (see "Field methods" for more info about fields)
+f := structs.Fields(server)
+
+// Return the struct name => "Server"
+n := structs.Name(server)
+
+// Check if any field of a struct is initialized or not.
+h := structs.HasZero(server)
+
+// Check if all fields of a struct is initialized or not.
+z := structs.IsZero(server)
+
+// Check if server is a struct or a pointer to struct
+i := structs.IsStruct(server)
+```
+
+### Struct methods
+
+The structs functions can be also used as independent methods by creating a new
+`*structs.Struct`. This is handy if you want to have more control over the
+structs (such as retrieving a single Field).
+
+```go
+// Create a new struct type:
+s := structs.New(server)
+
+m := s.Map()              // Get a map[string]interface{}
+v := s.Values()           // Get a []interface{}
+f := s.Fields()           // Get a []*Field
+n := s.Names()            // Get a []string
+f := s.Field(name)        // Get a *Field based on the given field name
+f, ok := s.FieldOk(name)  // Get a *Field based on the given field name
+n := s.Name()             // Get the struct name
+h := s.HasZero()          // Check if any field is initialized
+z := s.IsZero()           // Check if all fields are initialized
+```
+
+### Field methods
+
+We can easily examine a single Field for more detail. Below you can see how we
+get and interact with various field methods:
+
+
+```go
+s := structs.New(server)
+
+// Get the Field struct for the "Name" field
+name := s.Field("Name")
+
+// Get the underlying value,  value => "gopher"
+value := name.Value().(string)
+
+// Set the field's value
+name.Set("another gopher")
+
+// Get the field's kind, kind =>  "string"
+name.Kind()
+
+// Check if the field is exported or not
+if name.IsExported() {
+	fmt.Println("Name field is exported")
+}
+
+// Check if the value is a zero value, such as "" for string, 0 for int
+if !name.IsZero() {
+	fmt.Println("Name is initialized")
+}
+
+// Check if the field is an anonymous (embedded) field
+if !name.IsEmbedded() {
+	fmt.Println("Name is not an embedded field")
+}
+
+// Get the Field's tag value for tag name "json", tag value => "name,omitempty"
+tagValue := name.Tag("json")
+```
+
+Nested structs are supported too:
+
+```go
+addrField := s.Field("Server").Field("Addr")
+
+// Get the value for addr
+a := addrField.Value().(string)
+
+// Or get all fields
+httpServer := s.Field("Server").Fields()
+```
+
+We can also get a slice of Fields from the Struct type to iterate over all
+fields. This is handy if you wish to examine all fields:
+
+```go
+s := structs.New(server)
+
+for _, f := range s.Fields() {
+	fmt.Printf("field name: %+v\n", f.Name())
+
+	if f.IsExported() {
+		fmt.Printf("value   : %+v\n", f.Value())
+		fmt.Printf("is zero : %+v\n", f.IsZero())
+	}
+}
+```
+
+## Credits
+
+ * [Fatih Arslan](https://github.com/fatih)
+ * [Cihangir Savas](https://github.com/cihangir)
+
+## License
+
+The MIT License (MIT) - see LICENSE.md for more details