1 files changed, 296 insertions, 0 deletions

diff --git a/vendor/github.com/aws/aws-sdk-go/private/protocol/json/jsonutil/build.go b/vendor/github.com/aws/aws-sdk-go/private/protocol/json/jsonutil/build.go
new file mode 100644
index 0000000..864fb67
--- /dev/null
+++ b/vendor/github.com/aws/aws-sdk-go/private/protocol/json/jsonutil/build.go
@@ -0,0 +1,296 @@
+// Package jsonutil provides JSON serialization of AWS requests and responses.
+package jsonutil
+
+import (
+        "bytes"
+        "encoding/base64"
+        "encoding/json"
+        "fmt"
+        "math"
+        "reflect"
+        "sort"
+        "strconv"
+        "time"
+
+        "github.com/aws/aws-sdk-go/aws"
+        "github.com/aws/aws-sdk-go/private/protocol"
+)
+
+var timeType = reflect.ValueOf(time.Time{}).Type()
+var byteSliceType = reflect.ValueOf([]byte{}).Type()
+
+// BuildJSON builds a JSON string for a given object v.
+func BuildJSON(v interface{}) ([]byte, error) {
+        var buf bytes.Buffer
+
+        err := buildAny(reflect.ValueOf(v), &buf, "")
+        return buf.Bytes(), err
+}
+
+func buildAny(value reflect.Value, buf *bytes.Buffer, tag reflect.StructTag) error {
+        origVal := value
+        value = reflect.Indirect(value)
+        if !value.IsValid() {
+                return nil
+        }
+
+        vtype := value.Type()
+
+        t := tag.Get("type")
+        if t == "" {
+                switch vtype.Kind() {
+                case reflect.Struct:
+                        // also it can't be a time object
+                        if value.Type() != timeType {
+                                t = "structure"
+                        }
+                case reflect.Slice:
+                        // also it can't be a byte slice
+                        if _, ok := value.Interface().([]byte); !ok {
+                                t = "list"
+                        }
+                case reflect.Map:
+                        // cannot be a JSONValue map
+                        if _, ok := value.Interface().(aws.JSONValue); !ok {
+                                t = "map"
+                        }
+                }
+        }
+
+        switch t {
+        case "structure":
+                if field, ok := vtype.FieldByName("_"); ok {
+                        tag = field.Tag
+                }
+                return buildStruct(value, buf, tag)
+        case "list":
+                return buildList(value, buf, tag)
+        case "map":
+                return buildMap(value, buf, tag)
+        default:
+                return buildScalar(origVal, buf, tag)
+        }
+}
+
+func buildStruct(value reflect.Value, buf *bytes.Buffer, tag reflect.StructTag) error {
+        if !value.IsValid() {
+                return nil
+        }
+
+        // unwrap payloads
+        if payload := tag.Get("payload"); payload != "" {
+                field, _ := value.Type().FieldByName(payload)
+                tag = field.Tag
+                value = elemOf(value.FieldByName(payload))
+
+                if !value.IsValid() {
+                        return nil
+                }
+        }
+
+        buf.WriteByte('{')
+
+        t := value.Type()
+        first := true
+        for i := 0; i < t.NumField(); i++ {
+                member := value.Field(i)
+
+                // This allocates the most memory.
+                // Additionally, we cannot skip nil fields due to
+                // idempotency auto filling.
+                field := t.Field(i)
+
+                if field.PkgPath != "" {
+                        continue // ignore unexported fields
+                }
+                if field.Tag.Get("json") == "-" {
+                        continue
+                }
+                if field.Tag.Get("location") != "" {
+                        continue // ignore non-body elements
+                }
+                if field.Tag.Get("ignore") != "" {
+                        continue
+                }
+
+                if protocol.CanSetIdempotencyToken(member, field) {
+                        token := protocol.GetIdempotencyToken()
+                        member = reflect.ValueOf(&token)
+                }
+
+                if (member.Kind() == reflect.Ptr || member.Kind() == reflect.Slice || member.Kind() == reflect.Map) && member.IsNil() {
+                        continue // ignore unset fields
+                }
+
+                if first {
+                        first = false
+                } else {
+                        buf.WriteByte(',')
+                }
+
+                // figure out what this field is called
+                name := field.Name
+                if locName := field.Tag.Get("locationName"); locName != "" {
+                        name = locName
+                }
+
+                writeString(name, buf)
+                buf.WriteString(`:`)
+
+                err := buildAny(member, buf, field.Tag)
+                if err != nil {
+                        return err
+                }
+
+        }
+
+        buf.WriteString("}")
+
+        return nil
+}
+
+func buildList(value reflect.Value, buf *bytes.Buffer, tag reflect.StructTag) error {
+        buf.WriteString("[")
+
+        for i := 0; i < value.Len(); i++ {
+                buildAny(value.Index(i), buf, "")
+
+                if i < value.Len()-1 {
+                        buf.WriteString(",")
+                }
+        }
+
+        buf.WriteString("]")
+
+        return nil
+}
+
+type sortedValues []reflect.Value
+
+func (sv sortedValues) Len() int           { return len(sv) }
+func (sv sortedValues) Swap(i, j int)      { sv[i], sv[j] = sv[j], sv[i] }
+func (sv sortedValues) Less(i, j int) bool { return sv[i].String() < sv[j].String() }
+
+func buildMap(value reflect.Value, buf *bytes.Buffer, tag reflect.StructTag) error {
+        buf.WriteString("{")
+
+        sv := sortedValues(value.MapKeys())
+        sort.Sort(sv)
+
+        for i, k := range sv {
+                if i > 0 {
+                        buf.WriteByte(',')
+                }
+
+                writeString(k.String(), buf)
+                buf.WriteString(`:`)
+
+                buildAny(value.MapIndex(k), buf, "")
+        }
+
+        buf.WriteString("}")
+
+        return nil
+}
+
+func buildScalar(v reflect.Value, buf *bytes.Buffer, tag reflect.StructTag) error {
+        // prevents allocation on the heap.
+        scratch := [64]byte{}
+        switch value := reflect.Indirect(v); value.Kind() {
+        case reflect.String:
+                writeString(value.String(), buf)
+        case reflect.Bool:
+                if value.Bool() {
+                        buf.WriteString("true")
+                } else {
+                        buf.WriteString("false")
+                }
+        case reflect.Int64:
+                buf.Write(strconv.AppendInt(scratch[:0], value.Int(), 10))
+        case reflect.Float64:
+                f := value.Float()
+                if math.IsInf(f, 0) || math.IsNaN(f) {
+                        return &json.UnsupportedValueError{Value: v, Str: strconv.FormatFloat(f, 'f', -1, 64)}
+                }
+                buf.Write(strconv.AppendFloat(scratch[:0], f, 'f', -1, 64))
+        default:
+                switch converted := value.Interface().(type) {
+                case time.Time:
+                        format := tag.Get("timestampFormat")
+                        if len(format) == 0 {
+                                format = protocol.UnixTimeFormatName
+                        }
+
+                        ts := protocol.FormatTime(format, converted)
+                        if format != protocol.UnixTimeFormatName {
+                                ts = `"` + ts + `"`
+                        }
+
+                        buf.WriteString(ts)
+                case []byte:
+                        if !value.IsNil() {
+                                buf.WriteByte('"')
+                                if len(converted) < 1024 {
+                                        // for small buffers, using Encode directly is much faster.
+                                        dst := make([]byte, base64.StdEncoding.EncodedLen(len(converted)))
+                                        base64.StdEncoding.Encode(dst, converted)
+                                        buf.Write(dst)
+                                } else {
+                                        // for large buffers, avoid unnecessary extra temporary
+                                        // buffer space.
+                                        enc := base64.NewEncoder(base64.StdEncoding, buf)
+                                        enc.Write(converted)
+                                        enc.Close()
+                                }
+                                buf.WriteByte('"')
+                        }
+                case aws.JSONValue:
+                        str, err := protocol.EncodeJSONValue(converted, protocol.QuotedEscape)
+                        if err != nil {
+                                return fmt.Errorf("unable to encode JSONValue, %v", err)
+                        }
+                        buf.WriteString(str)
+                default:
+                        return fmt.Errorf("unsupported JSON value %v (%s)", value.Interface(), value.Type())
+                }
+        }
+        return nil
+}
+
+var hex = "0123456789abcdef"
+
+func writeString(s string, buf *bytes.Buffer) {
+        buf.WriteByte('"')
+        for i := 0; i < len(s); i++ {
+                if s[i] == '"' {
+                        buf.WriteString(`\"`)
+                } else if s[i] == '\\' {
+                        buf.WriteString(`\\`)
+                } else if s[i] == '\b' {
+                        buf.WriteString(`\b`)
+                } else if s[i] == '\f' {
+                        buf.WriteString(`\f`)
+                } else if s[i] == '\r' {
+                        buf.WriteString(`\r`)
+                } else if s[i] == '\t' {
+                        buf.WriteString(`\t`)
+                } else if s[i] == '\n' {
+                        buf.WriteString(`\n`)
+                } else if s[i] < 32 {
+                        buf.WriteString("\\u00")
+                        buf.WriteByte(hex[s[i]>>4])
+                        buf.WriteByte(hex[s[i]&0xF])
+                } else {
+                        buf.WriteByte(s[i])
+                }
+        }
+        buf.WriteByte('"')
+}
+
+// Returns the reflection element of a value, if it is a pointer.
+func elemOf(value reflect.Value) reflect.Value {
+        for value.Kind() == reflect.Ptr {
+                value = value.Elem()
+        }
+        return value
+}