github.com/erda-project/erda-infra@v1.0.9/pkg/strutil/interface.go (about)

     1  // Copyright (c) 2021 Terminus, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package strutil
    16  
    17  import (
    18  	"fmt"
    19  	"strconv"
    20  )
    21  
    22  // String convert interface to string
    23  func String(i interface{}) string {
    24  	if i == nil {
    25  		return ""
    26  	}
    27  	switch v := i.(type) {
    28  	case int:
    29  		return strconv.Itoa(v)
    30  	case int8:
    31  		return strconv.FormatInt(int64(v), 10)
    32  	case int32:
    33  		return strconv.FormatInt(int64(v), 10)
    34  	case int64:
    35  		return strconv.FormatInt(v, 10)
    36  	case uint:
    37  		return strconv.FormatUint(uint64(v), 10)
    38  	case uint8:
    39  		return strconv.FormatUint(uint64(v), 10)
    40  	case uint32:
    41  		return strconv.FormatUint(uint64(v), 10)
    42  	case uint64:
    43  		return strconv.FormatUint(v, 10)
    44  	case float32:
    45  		return strconv.FormatFloat(float64(v), 'f', -1, 32)
    46  	case float64:
    47  		return strconv.FormatFloat(v, 'f', -1, 64)
    48  	case []byte:
    49  		return string(v)
    50  	case string:
    51  		return v
    52  	default:
    53  		return fmt.Sprintf("%v", i)
    54  	}
    55  }