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map.go
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map.go
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package tag_scanner
import "strings"
const (
FlagPreserveKeys ParseFlag = 1 << iota
FlagForceTags
FlagTags
FlagNotNil
)
type ParseFlag uint8
func (b ParseFlag) Set(flag ParseFlag) ParseFlag { return b | flag }
func (b ParseFlag) Clear(flag ParseFlag) ParseFlag { return b &^ flag }
func (b ParseFlag) Toggle(flag ParseFlag) ParseFlag { return b ^ flag }
func (b ParseFlag) Has(flag ParseFlag) bool { return b&flag != 0 }
func JoinParseFlags(flag ...ParseFlag) (f ParseFlag) {
for _, flag := range flag {
f |= flag
}
return
}
type Map map[string]string
func (this Map) Clone() (clone Map) {
if this == nil {
return
}
clone = make(Map)
for key, value := range this {
clone[key] = value
}
return
}
func (this Map) SetParseFlag(name ...string) Map {
this = this.Clone()
if this == nil {
this = Map{}
}
for _, name := range name {
this[name] = name
}
return this
}
func (this Map) Get(key string) (v string) {
if this != nil {
v = this[key]
}
return
}
func (this Map) GetAny(key ...string) (v string) {
for _, key := range key {
if this != nil {
v = this[key]
}
}
return
}
func (this Map) GetOk(key string) (v string, ok bool) {
if this == nil {
return
}
v, ok = this[key]
return
}
func (this Map) GetAnyOk(key ...string) (v string, ok bool) {
if this == nil {
return
}
for _, key := range key {
v, ok = this[key]
}
return
}
func (this Map) GetString(key string) (v string) {
if this == nil {
return
}
if v, ok := this[key]; ok {
return Default.String(v)
}
return
}
func (this Map) GetAnyString(key ...string) (v string) {
if this == nil {
return
}
for _, key := range key {
if v, ok := this[key]; ok {
return Default.String(v)
}
}
return
}
func (this Map) GetStringAlias(key string, alias ...string) (v string) {
if this == nil {
return
}
if v, ok := this[key]; ok {
return Default.String(v)
}
for _, key := range alias {
if v, ok := this[key]; ok {
return Default.String(v)
}
}
return
}
func (this Map) Empty() bool {
return this == nil || len(this) == 0
}
func (this Map) Enable(key string) {
this[key] = key
}
func (this *Map) Set(key, value string) {
if *this == nil {
*this = make(Map)
}
(*this)[key] = value
}
func (this Map) Flag(name string) bool {
if this == nil {
return false
}
return this[name] == name
}
func (this Map) Flags() (flags []string) {
if this != nil {
for k, v := range this {
if k == v {
flags = append(flags, k)
}
}
}
return
}
func (this Map) String() string {
var pairs []string
for k, v := range this {
if k == v {
pairs = append(pairs, k)
} else {
pairs = append(pairs, k+":"+v)
}
}
return strings.Join(pairs, "; ")
}
func (this Map) Update(setting ...map[string]string) {
for _, setting := range setting {
for k, v := range setting {
this[k] = v
}
}
}
func (this Map) GetTags(name string, flags ...ParseFlag) (tags Map) {
flag := JoinParseFlags(flags...)
if s := this[name]; s != "" {
if !this.Scanner().IsTags(s) {
if !flag.Has(FlagForceTags) {
return
}
if s == name {
s = ""
}
s = this.Scanner().ToTags(s)
}
tags = make(Map)
tags.ParseString(s, flag)
} else if flag.Has(FlagNotNil) {
return Map{}
}
return
}
func (this Map) TagsOf(value string, flags ...ParseFlag) (tags Map) {
if value != "" && this.Scanner().IsTags(value) {
tags = make(Map)
tags.ParseString(value, JoinParseFlags(flags...))
}
return
}
func (this Map) SetFlag(flagName ...string) Map {
for _, name := range flagName {
this[name] = name
}
return this
}
func (this *Map) ParseDefault(tags StructTag, key string, keyAlias ...string) (ok bool) {
return this.Parse(tags, key, 0, keyAlias...)
}
func (this *Map) Parse(tags StructTag, key string, flag ParseFlag, keyAlias ...string) (ok bool) {
return this.ParseCallback(tags, append([]string{key}, keyAlias...), flag)
}
func (this *Map) ParseCallbackDefault(tags StructTag, keys []string, cb ...func(dest Map, n Node)) (ok bool) {
return this.ParseCallback(tags, keys, 0, cb...)
}
func (this *Map) ParseCallback(tags StructTag, keys []string, flag ParseFlag, cb ...func(dest Map, n Node)) (ok bool) {
if *this == nil {
*this = make(Map)
}
var tags_ = make([]string, len(keys))
for i, key := range keys {
tags_[i] = tags.Get(key)
}
for _, str := range tags_ {
(*this).ParseString(str, flag, cb...)
}
return len(*this) > 0
}
func (this *Map) Scanner() Scanner {
return Default
}
func (this *Map) ParseStringDefault(s string, cb ...func(dest Map, n Node)) {
this.ParseString(s, 0, cb...)
}
func (this *Map) ParseString(s string, flags ParseFlag, cb ...func(dest Map, n Node)) {
if *this == nil {
*this = map[string]string{}
}
scanner := this.Scanner()
scanner.ScanAll(s, func(node Node) {
for _, cb := range cb {
cb(*this, node)
}
switch node.Type() {
case Tags:
if flags.Has(FlagTags) {
n := node.(NodeTags)
(*this)[n.Value()] = n.Value()
}
case KeyValue:
kv := node.(NodeKeyValue)
key := kv.Key
if !flags.Has(FlagPreserveKeys) {
key = strings.ToUpper(key)
}
(*this)[key] = kv.Value
case Flag:
name := node.String()
if !flags.Has(FlagPreserveKeys) {
name = strings.ToUpper(name)
}
(*this)[name] = name
}
})
}