structmap/structmap.go at master · popbones/structmap · GitHub

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package structmap

import (
"errors"
"reflect"
"strings"
)

varTag="map"

varTagPref= []string{Tag}

var (
ErrNonStruct=errors.New("not a struct")
ErrNonStringKeyMap=errors.New("only supports maps with string as key")
ErrNotPtr=errors.New("not a pointer")
)

// unpack an interface and get the underlying value and type. Enters infinite loop if i is a pointer to itself.
funcunpackInterface(iinterface{}) (v reflect.Value, t reflect.Type) {
v=reflect.ValueOf(i)

forv.Kind() ==reflect.Ptr||v.Kind() ==reflect.Interface {
v=v.Elem()
	}

ifv.IsValid() {
t=v.Type()
	}

return
}

funcupdateMap(dstmap[string]interface{}, srcmap[string]interface{}) {
fork, v:=rangesrc {
dst[k] =v
	}
}

funcscanTag(f reflect.StructField) (namestring, optsmap[string]interface{}) {
tags:=f.Tag
opts=make(map[string]interface{})

for_, tagName:=rangeTagPref {
_name, _opts:=parseTag(tags.Get(tagName))
ifname==""&&_name!="" {
name=_name
 }
updateMap(opts, _opts)
	}

ifname=="" {
name=f.Name
	}

return
}

funcparseTag(tagstring) (namestring, optsmap[string]interface{}) {
opts=make(map[string]interface{})
iftag=="" {
return
	}
parts:=strings.Split(tag, ",")
name=parts[0]
for_, part:=rangeparts[1:] {
kv:=strings.SplitN(part, ":", 2)
iflen(kv) ==1 {
opts[kv[0]] =true
 }
iflen(kv) ==2 {
opts[kv[0]] =kv[1]
 }
	}
return
}