github.com/zhuohuang-hust/src-cbuild@v0.0.0-20230105071821-c7aab3e7c840/mergeCode/toml/cmd/toml-test-decoder/main.go (about)

     1  // Command toml-test-decoder satisfies the toml-test interface for testing
     2  // TOML decoders. Namely, it accepts TOML on stdin and outputs JSON on stdout.
     3  package main
     4  
     5  import (
     6  	"encoding/json"
     7  	"flag"
     8  	"fmt"
     9  	"log"
    10  	"os"
    11  	"path"
    12  	"time"
    13  
    14  	"github.com/BurntSushi/toml"
    15  )
    16  
    17  func init() {
    18  	log.SetFlags(0)
    19  
    20  	flag.Usage = usage
    21  	flag.Parse()
    22  }
    23  
    24  func usage() {
    25  	log.Printf("Usage: %s < toml-file\n", path.Base(os.Args[0]))
    26  	flag.PrintDefaults()
    27  
    28  	os.Exit(1)
    29  }
    30  
    31  func main() {
    32  	if flag.NArg() != 0 {
    33  		flag.Usage()
    34  	}
    35  
    36  	var tmp interface{}
    37  	if _, err := toml.DecodeReader(os.Stdin, &tmp); err != nil {
    38  		log.Fatalf("Error decoding TOML: %s", err)
    39  	}
    40  
    41  	typedTmp := translate(tmp)
    42  	if err := json.NewEncoder(os.Stdout).Encode(typedTmp); err != nil {
    43  		log.Fatalf("Error encoding JSON: %s", err)
    44  	}
    45  }
    46  
    47  func translate(tomlData interface{}) interface{} {
    48  	switch orig := tomlData.(type) {
    49  	case map[string]interface{}:
    50  		typed := make(map[string]interface{}, len(orig))
    51  		for k, v := range orig {
    52  			typed[k] = translate(v)
    53  		}
    54  		return typed
    55  	case []map[string]interface{}:
    56  		typed := make([]map[string]interface{}, len(orig))
    57  		for i, v := range orig {
    58  			typed[i] = translate(v).(map[string]interface{})
    59  		}
    60  		return typed
    61  	case []interface{}:
    62  		typed := make([]interface{}, len(orig))
    63  		for i, v := range orig {
    64  			typed[i] = translate(v)
    65  		}
    66  
    67  		// We don't really need to tag arrays, but let's be future proof.
    68  		// (If TOML ever supports tuples, we'll need this.)
    69  		return tag("array", typed)
    70  	case time.Time:
    71  		return tag("datetime", orig.Format("2006-01-02T15:04:05Z"))
    72  	case bool:
    73  		return tag("bool", fmt.Sprintf("%v", orig))
    74  	case int64:
    75  		return tag("integer", fmt.Sprintf("%d", orig))
    76  	case float64:
    77  		return tag("float", fmt.Sprintf("%v", orig))
    78  	case string:
    79  		return tag("string", orig)
    80  	}
    81  
    82  	panic(fmt.Sprintf("Unknown type: %T", tomlData))
    83  }
    84  
    85  func tag(typeName string, data interface{}) map[string]interface{} {
    86  	return map[string]interface{}{
    87  		"type":  typeName,
    88  		"value": data,
    89  	}
    90  }