Golang cast.ToStringSlice函数代码示例

func (v *Viper) Get(key string) interface{} {
	lcaseKey := strings.ToLower(key)
	val := v.find(lcaseKey)
	if val == nil {
		return nil
	}

	valType := val
	if v.typeByDefValue {
		// TODO(bep) this branch isn't covered by a single test.
		path := strings.Split(lcaseKey, v.keyDelim)
		defVal := v.searchMap(v.defaults, path)
		if defVal != nil {
			valType = defVal
		}
	}

	switch valType.(type) {
	case bool:
		return cast.ToBool(val)
	case string:
		return cast.ToString(val)
	case int64, int32, int16, int8, int:
		return cast.ToInt(val)
	case float64, float32:
		return cast.ToFloat64(val)
	case time.Time:
		return cast.ToTime(val)
	case time.Duration:
		return cast.ToDuration(val)
	case []string:
		return cast.ToStringSlice(val)
	}
	return val
}

func readSetting(name string, lpkg *pkg.LocalPackage,
	vals map[interface{}]interface{}) (CfgEntry, error) {

	entry := CfgEntry{}

	entry.Name = name
	entry.Description = stringValue(vals["description"])
	entry.Value = stringValue(vals["value"])
	if vals["type"] == nil {
		entry.SettingType = CFG_SETTING_TYPE_RAW
	} else {
		var ok bool
		typename := stringValue(vals["type"])
		entry.SettingType, ok = cfgSettingNameTypeMap[typename]
		if !ok {
			return entry, util.FmtNewtError(
				"setting %s specifies invalid type: %s", name, typename)
		}
	}
	entry.appendValue(lpkg, entry.Value)

	entry.Restrictions = []CfgRestriction{}
	restrictionStrings := cast.ToStringSlice(vals["restrictions"])
	for _, rstring := range restrictionStrings {
		r, err := readRestriction(name, rstring)
		if err != nil {
			return entry,
				util.PreNewtError(err, "error parsing setting %s", name)
		}
		entry.Restrictions = append(entry.Restrictions, r)
	}

	return entry, nil
}

func GetStringSliceFeatures(v *viper.Viper, features map[string]bool,
	key string) []string {

	vals := GetSliceFeatures(v, features, key)

	strVals := []string{}
	for _, v := range vals {
		subVals := cast.ToStringSlice(v)
		strVals = append(strVals, subVals...)
	}

	return strVals
}

func (v *Viper) Get(key string) interface{} {
	path := strings.Split(key, v.keyDelim)

	var val interface{}
	lcaseKey := strings.ToLower(key)
	source := v.find(path[0])
	if source != nil {
		if reflect.TypeOf(source).Kind() == reflect.Map {
			val = v.searchMap(cast.ToStringMap(source), path[1:])
		}
	}

	if val == nil {
		val = v.find(lcaseKey)
	}

	if val == nil {
		return nil
	}

	var valType interface{}
	if !v.typeByDefValue {
		valType = val
	} else {
		defVal, defExists := v.defaults[lcaseKey]
		if defExists {
			valType = defVal
		} else {
			valType = val
		}
	}

	switch valType.(type) {
	case bool:
		return cast.ToBool(val)
	case string:
		return cast.ToString(val)
	case int64, int32, int16, int8, int:
		return cast.ToInt(val)
	case float64, float32:
		return cast.ToFloat64(val)
	case time.Time:
		return cast.ToTime(val)
	case time.Duration:
		return cast.ToDuration(val)
	case []string:
		return cast.ToStringSlice(val)
	}
	return val
}

func (p *Page) update(f interface{}) error {
	if f == nil {
		return fmt.Errorf("no metadata found")
	}
	m := f.(map[string]interface{})
	var err error
	var draft, published, isCJKLanguage *bool
	for k, v := range m {
		loki := strings.ToLower(k)
		switch loki {
		case "title":
			p.Title = cast.ToString(v)
		case "linktitle":
			p.linkTitle = cast.ToString(v)
		case "description":
			p.Description = cast.ToString(v)
		case "slug":
			p.Slug = cast.ToString(v)
		case "url":
			if url := cast.ToString(v); strings.HasPrefix(url, "http://") || strings.HasPrefix(url, "https://") {
				return fmt.Errorf("Only relative URLs are supported, %v provided", url)
			}
			p.URL = cast.ToString(v)
		case "type":
			p.contentType = cast.ToString(v)
		case "extension", "ext":
			p.extension = cast.ToString(v)
		case "keywords":
			p.Keywords = cast.ToStringSlice(v)
		case "date":
			p.Date, err = cast.ToTimeE(v)
			if err != nil {
				jww.ERROR.Printf("Failed to parse date '%v' in page %s", v, p.File.Path())
			}
		case "lastmod":
			p.Lastmod, err = cast.ToTimeE(v)
			if err != nil {
				jww.ERROR.Printf("Failed to parse lastmod '%v' in page %s", v, p.File.Path())
			}
		case "publishdate", "pubdate":
			p.PublishDate, err = cast.ToTimeE(v)
			if err != nil {
				jww.ERROR.Printf("Failed to parse publishdate '%v' in page %s", v, p.File.Path())
			}
		case "draft":
			draft = new(bool)
			*draft = cast.ToBool(v)
		case "published": // Intentionally undocumented
			published = new(bool)
			*published = cast.ToBool(v)
		case "layout":
			p.Layout = cast.ToString(v)
		case "markup":
			p.Markup = cast.ToString(v)
		case "weight":
			p.Weight = cast.ToInt(v)
		case "aliases":
			p.Aliases = cast.ToStringSlice(v)
			for _, alias := range p.Aliases {
				if strings.HasPrefix(alias, "http://") || strings.HasPrefix(alias, "https://") {
					return fmt.Errorf("Only relative aliases are supported, %v provided", alias)
				}
			}
		case "status":
			p.Status = cast.ToString(v)
		case "sitemap":
			p.Sitemap = parseSitemap(cast.ToStringMap(v))
		case "iscjklanguage":
			isCJKLanguage = new(bool)
			*isCJKLanguage = cast.ToBool(v)
		default:
			// If not one of the explicit values, store in Params
			switch vv := v.(type) {
			case bool:
				p.Params[loki] = vv
			case string:
				p.Params[loki] = vv
			case int64, int32, int16, int8, int:
				p.Params[loki] = vv
			case float64, float32:
				p.Params[loki] = vv
			case time.Time:
				p.Params[loki] = vv
			default: // handle array of strings as well
				switch vvv := vv.(type) {
				case []interface{}:
					if len(vvv) > 0 {
						switch vvv[0].(type) {
						case map[interface{}]interface{}: // Proper parsing structured array from YAML based FrontMatter
							p.Params[loki] = vvv
						case map[string]interface{}: // Proper parsing structured array from JSON based FrontMatter
							p.Params[loki] = vvv
						default:
							a := make([]string, len(vvv))
							for i, u := range vvv {
								a[i] = cast.ToString(u)
							}

							p.Params[loki] = a
						}
//.........这里部分代码省略.........

func (v *Viper) GetStringSlice(key string) []string {
	return cast.ToStringSlice(v.Get(key))
}

func (page *Page) update(f interface{}) error {
	if f == nil {
		return fmt.Errorf("no metadata found")
	}
	m := f.(map[string]interface{})

	for k, v := range m {
		loki := strings.ToLower(k)
		switch loki {
		case "title":
			page.Title = cast.ToString(v)
		case "linktitle":
			page.linkTitle = cast.ToString(v)
		case "description":
			page.Description = cast.ToString(v)
		case "slug":
			page.Slug = helpers.Urlize(cast.ToString(v))
		case "url":
			if url := cast.ToString(v); strings.HasPrefix(url, "http://") || strings.HasPrefix(url, "https://") {
				return fmt.Errorf("Only relative urls are supported, %v provided", url)
			}
			page.Url = helpers.Urlize(cast.ToString(v))
		case "type":
			page.contentType = cast.ToString(v)
		case "keywords":
			page.Keywords = cast.ToStringSlice(v)
		case "date", "pubdate":
			page.Date = cast.ToTime(v)
		case "draft":
			page.Draft = cast.ToBool(v)
		case "layout":
			page.layout = cast.ToString(v)
		case "markup":
			page.Markup = cast.ToString(v)
		case "weight":
			page.Weight = cast.ToInt(v)
		case "aliases":
			page.Aliases = cast.ToStringSlice(v)
			for _, alias := range page.Aliases {
				if strings.HasPrefix(alias, "http://") || strings.HasPrefix(alias, "https://") {
					return fmt.Errorf("Only relative aliases are supported, %v provided", alias)
				}
			}
		case "status":
			page.Status = cast.ToString(v)
		case "sitemap":
			page.Sitemap = parseSitemap(cast.ToStringMap(v))
		default:
			// If not one of the explicit values, store in Params
			switch vv := v.(type) {
			case bool:
				page.Params[loki] = vv
			case string:
				page.Params[loki] = vv
			case int64, int32, int16, int8, int:
				page.Params[loki] = vv
			case float64, float32:
				page.Params[loki] = vv
			case time.Time:
				page.Params[loki] = vv
			default: // handle array of strings as well
				switch vvv := vv.(type) {
				case []interface{}:
					var a = make([]string, len(vvv))
					for i, u := range vvv {
						a[i] = cast.ToString(u)
					}
					page.Params[loki] = a
				default:
					page.Params[loki] = vv
				}
			}
		}
	}
	return nil

}

func GetStringSlice(key string) []string {
	return cast.ToStringSlice(Get(key))
}

// Returns the value associated with the key as a slice of strings
func (c RawConfig) GetStringSlice(key string) []string {
	return cast.ToStringSlice(c.Get(key))
}

func (manager *Config) GetStringSlice(key string) []string {
	return cast.ToStringSlice(manager.Get(key))
}

func (v *Viper) Get(key string) interface{} {
	path := strings.Split(key, v.keyDelim)

	lcaseKey := strings.ToLower(key)
	val := v.find(lcaseKey)

	if val == nil {
		source := v.find(strings.ToLower(path[0]))
		if source != nil {
			if reflect.TypeOf(source).Kind() == reflect.Map {
				val = v.searchMap(cast.ToStringMap(source), path[1:])
			}
		}
	}

	// if no other value is returned and a flag does exist for the value,
	// get the flag's value even if the flag's value has not changed
	if val == nil {
		if flag, exists := v.pflags[lcaseKey]; exists {
			jww.TRACE.Println(key, "get pflag default", val)
			switch flag.ValueType() {
			case "int", "int8", "int16", "int32", "int64":
				val = cast.ToInt(flag.ValueString())
			case "bool":
				val = cast.ToBool(flag.ValueString())
			default:
				val = flag.ValueString()
			}
		}
	}

	if val == nil {
		return nil
	}

	var valType interface{}
	if !v.typeByDefValue {
		valType = val
	} else {
		defVal, defExists := v.defaults[lcaseKey]
		if defExists {
			valType = defVal
		} else {
			valType = val
		}
	}

	switch valType.(type) {
	case bool:
		return cast.ToBool(val)
	case string:
		return cast.ToString(val)
	case int64, int32, int16, int8, int:
		return cast.ToInt(val)
	case float64, float32:
		return cast.ToFloat64(val)
	case time.Time:
		return cast.ToTime(val)
	case time.Duration:
		return cast.ToDuration(val)
	case []string:
		return cast.ToStringSlice(val)
	}
	return val
}

func (p *Page) update(f interface{}) error {
	if f == nil {
		return fmt.Errorf("no metadata found")
	}
	m := f.(map[string]interface{})
	var err error
	for k, v := range m {
		loki := strings.ToLower(k)
		switch loki {
		case "title":
			p.Title = cast.ToString(v)
		case "linktitle":
			p.linkTitle = cast.ToString(v)
		case "description":
			p.Description = cast.ToString(v)
		case "slug":
			p.Slug = cast.ToString(v)
		case "url":
			if url := cast.ToString(v); strings.HasPrefix(url, "http://") || strings.HasPrefix(url, "https://") {
				return fmt.Errorf("Only relative URLs are supported, %v provided", url)
			}
			p.URL = cast.ToString(v)
		case "type":
			p.contentType = cast.ToString(v)
		case "extension", "ext":
			p.extension = cast.ToString(v)
		case "keywords":
			p.Keywords = cast.ToStringSlice(v)
		case "date":
			p.Date, err = cast.ToTimeE(v)
			if err != nil {
				jww.ERROR.Printf("Failed to parse date '%v' in page %s", v, p.File.Path())
			}
		case "lastmod":
			p.Lastmod, err = cast.ToTimeE(v)
			if err != nil {
				jww.ERROR.Printf("Failed to parse lastmod '%v' in page %s", v, p.File.Path())
			}
		case "publishdate", "pubdate":
			p.PublishDate, err = cast.ToTimeE(v)
			if err != nil {
				jww.ERROR.Printf("Failed to parse publishdate '%v' in page %s", v, p.File.Path())
			}
		case "draft":
			p.Draft = cast.ToBool(v)
		case "layout":
			p.layout = cast.ToString(v)
		case "markup":
			p.Markup = cast.ToString(v)
		case "weight":
			p.Weight = cast.ToInt(v)
		case "aliases":
			p.Aliases = cast.ToStringSlice(v)
			for _, alias := range p.Aliases {
				if strings.HasPrefix(alias, "http://") || strings.HasPrefix(alias, "https://") {
					return fmt.Errorf("Only relative aliases are supported, %v provided", alias)
				}
			}
		case "status":
			p.Status = cast.ToString(v)
		case "sitemap":
			p.Sitemap = parseSitemap(cast.ToStringMap(v))
		default:
			// If not one of the explicit values, store in Params
			switch vv := v.(type) {
			case bool:
				p.Params[loki] = vv
			case string:
				p.Params[loki] = vv
			case int64, int32, int16, int8, int:
				p.Params[loki] = vv
			case float64, float32:
				p.Params[loki] = vv
			case time.Time:
				p.Params[loki] = vv
			default: // handle array of strings as well
				switch vvv := vv.(type) {
				case []interface{}:
					var a = make([]string, len(vvv))
					for i, u := range vvv {
						a[i] = cast.ToString(u)
					}
					p.Params[loki] = a
				default:
					p.Params[loki] = vv
				}
			}
		}
	}

	if p.Lastmod.IsZero() {
		p.Lastmod = p.Date
	}

	return nil

}