Source file src/github.com/hashicorp/hcl/lex.go

Documentation: github.com/hashicorp/hcl

     1  package hcl
     2  
     3  import (
     4  	"unicode"
     5  	"unicode/utf8"
     6  )
     7  
     8  type lexModeValue byte
     9  
    10  const (
    11  	lexModeUnknown lexModeValue = iota
    12  	lexModeHcl
    13  	lexModeJson
    14  )
    15  
    16  // lexMode returns whether we're going to be parsing in JSON
    17  // mode or HCL mode.
    18  func lexMode(v []byte) lexModeValue {
    19  	var (
    20  		r      rune
    21  		w      int
    22  		offset int
    23  	)
    24  
    25  	for {
    26  		r, w = utf8.DecodeRune(v[offset:])
    27  		offset += w
    28  		if unicode.IsSpace(r) {
    29  			continue
    30  		}
    31  		if r == '{' {
    32  			return lexModeJson
    33  		}
    34  		break
    35  	}
    36  
    37  	return lexModeHcl
    38  }
    39  

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