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458 lines
9.1 KiB
458 lines
9.1 KiB
package jdr
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import (
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"html/template"
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"errors"
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"fmt"
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"log"
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"regexp"
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"strconv"
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"strings"
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)
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var regexp_d = regexp.MustCompile(`^[1-9][0-9]*d([468]|1[02]|20|100)$`)
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type JsonValue interface{}
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type VariableType interface {
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Name() string
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Validate(value JsonValue) bool
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ToHTML(value JsonValue) (template.HTML, error)
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DefaultValue() JsonValue
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}
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func validateCast(err error) bool {
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if err != nil {
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log.Println(err)
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return false
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}
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return true
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}
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type VariableType_badType struct{}
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func (*VariableType_badType) Name() string {
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return "unknown type"
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}
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func (*VariableType_badType) Validate(s JsonValue) bool {
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return false
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}
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func (*VariableType_badType) ToHTML(value JsonValue) (template.HTML, error) {
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return template.HTML(""), errors.New("unknown type")
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}
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func (*VariableType_badType) DefaultValue() JsonValue {
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return ""
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}
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type VariableType_bool struct{}
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func (*VariableType_bool) Name() string {
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return "bool"
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}
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func (*VariableType_bool) ToBool(value JsonValue) (bool, error) {
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val, isBool := value.(bool)
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if !isBool {
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return false, errors.New("Non boolean value")
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}
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return val, nil
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}
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func (self *VariableType_bool) Validate(value JsonValue) bool {
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_, err := self.ToBool(value)
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return validateCast(err)
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}
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func (self *VariableType_bool) ToHTML(value JsonValue) (template.HTML, error) {
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val, err := self.ToBool(value)
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if err != nil {
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return template.HTML(""), err
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}
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ret := `<input type="checkbox"`
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if val {
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ret += ` checked`
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}
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ret += `/>`
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return template.HTML(ret), nil
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}
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func (self *VariableType_bool) DefaultValue() JsonValue {
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return false
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}
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type VariableType_int struct{}
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func (*VariableType_int) Name() string {
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return "int"
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}
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func (self *VariableType_int) ToInt(value JsonValue) (int64, error) {
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val, isInt := value.(int64)
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if !isInt {
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val2, isInt := value.(int)
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if isInt {
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val = int64(val2)
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} else {
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return 0, errors.New("Bad int type: " + fmt.Sprintf("%T", value))
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}
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}
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return val, nil
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}
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func (self *VariableType_int) Validate(value JsonValue) bool {
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_, err := self.ToInt(value)
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return validateCast(err)
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}
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func (self *VariableType_int) ToHTML(value JsonValue) (template.HTML, error) {
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val, err := self.ToInt(value)
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if err != nil {
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return template.HTML(""), err
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}
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ret := `<input type="number" step="1" value="` + strconv.FormatInt(val, 10) + `"/>`
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return template.HTML(ret), nil
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}
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func (self *VariableType_int) DefaultValue() JsonValue {
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return 0
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}
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type VariableType_float struct{}
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func (*VariableType_float) Name() string {
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return "float"
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}
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func (*VariableType_float) ToFloat(value JsonValue) (float64, error) {
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val, isFloat := value.(float64)
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if !isFloat {
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return 0.0, errors.New("Not a float")
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}
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return val, nil
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}
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func (self *VariableType_float) Validate(value JsonValue) bool {
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_, err := self.ToFloat(value)
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return validateCast(err)
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}
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func (self *VariableType_float) ToHTML(value JsonValue) (template.HTML, error) {
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val, err := self.ToFloat(value)
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if err != nil {
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return template.HTML(""), err
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}
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ret := `<input type="number" value="` + strconv.FormatFloat(val, 'g', -1, 64) + `"/>`
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return template.HTML(ret), nil
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}
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func (self *VariableType_float) DefaultValue() JsonValue {
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return 0.0
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}
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type VariableType_string struct{}
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func (*VariableType_string) Name() string {
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return "string"
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}
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func (self *VariableType_string) ToString(value JsonValue) (string, error) {
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val, isString := value.(string)
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if !isString {
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return "", errors.New("Not a string")
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}
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return val, nil
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}
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func (self *VariableType_string) Validate(value JsonValue) bool {
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_, err := self.ToString(value)
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return validateCast(err)
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}
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func (self *VariableType_string) ToHTML(value JsonValue) (template.HTML, error) {
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str, err := self.ToString(value)
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if err != nil {
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return template.HTML(""), err
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}
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ret := `<input type="text" value="` + template.HTMLEscapeString(str) + `"/>`
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return template.HTML(ret), nil
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}
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func (self *VariableType_string) DefaultValue() JsonValue {
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return ""
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}
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type VariableType_d struct{}
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func (*VariableType_d) Name() string {
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return "d"
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}
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func (*VariableType_d) Validate(value JsonValue) bool {
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//FIXME
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return false
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}
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func (self *VariableType_d) ToHTML(value JsonValue) (template.HTML, error) {
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//FIXME: non-generic version
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ret := `<input type="text" value="` /*+ template.HTMLEscapeString(value)*/ + `"/>`
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return template.HTML(ret), nil
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}
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func (self *VariableType_d) DefaultValue() JsonValue {
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//FIXME: non-generic version
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return ""
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}
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func makeVariableType(s string) VariableType {
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switch strings.ToLower(s) {
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case "bool":
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return &VariableType_bool{}
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case "int":
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return &VariableType_int{}
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case "float":
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return &VariableType_float{}
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case "string":
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return &VariableType_string{}
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case "d":
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return &VariableType_d{}
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default:
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log.Println("Unknown type:", s)
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return &VariableType_badType{}
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}
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}
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type CustomEnum struct {
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name string
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Values []string
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}
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func (self *CustomEnum) Name() string {
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return self.name
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}
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func (self *CustomEnum) ToId(value JsonValue) (int, error) {
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val, isString := value.(string)
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if !isString {
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return 0, errors.New("Enum value not a string")
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}
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for i := 0; i < len(self.Values); i++ {
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if self.Values[i] == val {
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return i, nil
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}
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}
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return 0, errors.New("No such element")
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}
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func (self *CustomEnum) Validate(value JsonValue) bool {
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_, err := self.ToId(value)
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return validateCast(err)
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}
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func (self *CustomEnum) ToHTML(value JsonValue) (template.HTML, error) {
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val, isString := value.(string)
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if !isString {
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return template.HTML(""), errors.New("Bad enum value")
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}
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selectItem := val != ""
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value_id := 0
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if selectItem {
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var err error
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value_id, err = self.ToId(value)
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if err != nil {
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return template.HTML(""), err
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}
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}
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ret := `<select>`
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for i, v := range self.Values {
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ret += `<option`
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if selectItem && i == value_id {
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ret += ` selected`
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}
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ret += `>`
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ret += template.HTMLEscapeString(v)
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ret += `</option>`
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}
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ret += `</select>`
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return template.HTML(ret), nil
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}
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func (self *CustomEnum) DefaultValue() JsonValue {
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return ""
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}
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type JsonObject map[string]interface{}
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type CustomStruct struct {
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name string
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Variables []*Variable
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}
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func (self *CustomStruct) Name() string {
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return self.name
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}
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func (self *CustomStruct) Validate(value JsonValue) bool {
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obj, isObj := value.(JsonObject)
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if !isObj {
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log.Println("Struct \"" + self.Name() + "\": value is not a JSON object")
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return false
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}
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for _, v := range self.Variables {
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if !v.Type.Validate(obj[v.Name()]) {
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log.Println("Struct \"" + self.Name() + "\": value \"" + v.Name() + "\" was not validated")
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return false
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}
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}
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return true
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}
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func (self *CustomStruct) ToHTML(value JsonValue) (template.HTML, error) {
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if !self.Validate(value) {
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return template.HTML(""), errors.New("Cannot validate struct")
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}
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obj, _ := value.(JsonObject)
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ret := template.HTML("")
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ret += `<div>` //FIXME: better tag
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for _, v := range self.Variables {
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if v.Name() != "" {
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label := `<label>` + template.HTMLEscapeString(v.Name()) + `</label>`
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ret += template.HTML(label)
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}
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html, err := v.Type.ToHTML(obj[v.Name()])
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if err != nil {
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return template.HTML(""), err
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}
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ret += html
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}
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ret += `</div>`
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return ret, nil
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}
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func (self *CustomStruct) DefaultValue() JsonValue {
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ret := make(JsonObject)
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for _, v := range self.Variables {
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ret[v.Name()] = v.Type.DefaultValue()
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}
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return ret
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}
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func parseCustomEnum(root xmlNode) (*CustomEnum, error) {
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customEnum := CustomEnum{}
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nameOk := false
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for i := 0; i < len(root.Attrs); i++ {
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attrName := root.Attrs[i].Name.Local
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attrVal := root.Attrs[i].Value
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switch attrName {
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case "name":
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nameOk = true
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customEnum.name = attrVal
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}
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}
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if !nameOk {
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return nil, errors.New("Unnamed custom enum")
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}
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for i := 0; i < len(root.Nodes); i++ {
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node := root.Nodes[i]
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switch node.XMLName.Local {
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case "value":
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customEnum.Values = append(customEnum.Values, string(node.Content))
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}
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}
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return &customEnum, nil
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}
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func parseCustomStruct(root xmlNode, sheet *CharacterSheet) (*CustomStruct, error) {
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customType := CustomStruct{}
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nameOk := false
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for i := 0; i < len(root.Attrs); i++ {
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attrName := root.Attrs[i].Name.Local
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attrVal := root.Attrs[i].Value
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switch attrName {
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case "name":
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nameOk = true
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customType.name = attrVal
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}
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}
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if !nameOk {
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return nil, errors.New("Unnamed custom type")
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}
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for i := 0; i < len(root.Nodes); i++ {
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node := root.Nodes[i]
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switch node.XMLName.Local {
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case "variable":
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variable, err := parseVariable(node, sheet, nil)
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if err != nil {
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return nil, err
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}
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customType.Variables = append(customType.Variables, variable)
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default:
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return nil, errors.New("Unknown tag in custom type: " + node.XMLName.Local)
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}
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}
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return &customType, nil
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}
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func parseCustomTypes(root xmlNode, sheet *CharacterSheet) error {
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for i := 0; i < len(root.Nodes); i++ {
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node := root.Nodes[i]
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switch node.XMLName.Local {
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case "enum":
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customEnum, err := parseCustomEnum(node)
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if err != nil {
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return err
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}
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sheet.AddType(customEnum)
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case "type":
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customType, err := parseCustomStruct(node, sheet)
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if err != nil {
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return err
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}
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sheet.AddType(customType)
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default:
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return errors.New("Unknown CustomType: " + root.Nodes[i].XMLName.Local)
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}
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}
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return nil
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}
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