datatype.go

@@ -1,11 +1,10 @@
 package envconf
 
 import (
-	"fmt"
 	"time"
 )
 
-type DataType uint
+type DataType int
 
 const (
 	TypeNone      DataType = iota
@@ -16,20 +15,12 @@ const (
 	TypeDirectory DataType = iota
 	TypeBool      DataType = iota
 	TypeHex       DataType = iota
+	TypeHex16     DataType = iota
+	TypeHex32     DataType = iota
+	TypeHex64     DataType = iota
+	TypeHex128    DataType = iota
 )
 
-func FixedHex(size uint) DataType {
-	return (DataType)(size<<16) | TypeHex
-}
-
-func (dtype DataType) baseType() DataType {
-	return dtype & 0xffff
-}
-
-func (dtype DataType) typeAndSize() (DataType, uint) {
-	return (dtype & 0xffff), uint(dtype >> 16)
-}
-
 type cValue struct {
 	dtype   DataType
 	intval  int64
@@ -41,24 +32,18 @@ type cValue struct {
 }
 
 func (dtype DataType) parse(key string, str string) (ret cValue) {
-	rdtype, size := dtype.typeAndSize()
+	info, ok := tInfo[dtype]
-	info, ok := tInfo[rdtype]
 	if ok {
-		ret = info.parser(key, str, size)
+		ret = info.parser(key, str)
 		if len(ret.binval) == 0 {
 			ret.binval = make([]byte, 0, 0)
 		}
 	}
 	return
 }
-
 func (dtype DataType) String() string {
-	rdtype, size := dtype.typeAndSize()
+	info, ok := tInfo[dtype]
-	info, ok := tInfo[rdtype]
 	if ok {
-		if size > 0 {
-			return fmt.Sprintf("%s%d", info.name, size)
-		}
 		return info.name
 	}
 	return "invalid"

envconf.go

@@ -287,7 +287,7 @@ func (c *Config) getRaw(key string, dtype DataType) (val cValue) {
 	if c.parsed {
 		key = cleanKey(key)
 		entry, ok := c.env[key]
-		if ok && (entry.dtype.baseType() == dtype.baseType()) {
+		if ok && (entry.dtype == dtype) {
 			return entry.parsed
 		}
 	}
@@ -303,7 +303,7 @@ func (c *Config) getRawMap(key string, dtype DataType) (empty map[string]cValue)
 
 		if ok {
 			for k, v := range entries {
-				if (v.dtype.baseType() == dtype.baseType()) && (v.parsed.err == nil) {
+				if (v.dtype == dtype) && (v.parsed.err == nil) {
 					retval[k] = v.parsed
 				} else {
 					return
@@ -329,6 +329,34 @@ func (c *Config) GetHex(key string) []byte {
 	return val.binval
 }
 
+// Returns the value of an environment variable.
+// If the variable is not defined as envconf.TypeHex16 the function will return []byte{}.
+func (c *Config) GetHex16(key string) []byte {
+	val := c.getRaw(key, TypeHex16)
+	return val.binval
+}
+
+// Returns the value of an environment variable.
+// If the variable is not defined as envconf.TypeHex32 the function will return []byte{}.
+func (c *Config) GetHex32(key string) []byte {
+	val := c.getRaw(key, TypeHex32)
+	return val.binval
+}
+
+// Returns the value of an environment variable.
+// If the variable is not defined as envconf.TypeHex64 the function will return []byte{}.
+func (c *Config) GetHex64(key string) []byte {
+	val := c.getRaw(key, TypeHex64)
+	return val.binval
+}
+
+// Returns the value of an environment variable.
+// If the variable is not defined as envconf.TypeHex128 the function will return []byte{}.
+func (c *Config) GetHex128(key string) []byte {
+	val := c.getRaw(key, TypeHex128)
+	return val.binval
+}
+
 // Returns the value of an environment variable.
 // If the variable is not defined as envconf.TypeMetric the function will return 0.
 func (c *Config) GetMetric(key string) int64 {
@@ -408,6 +436,38 @@ func (c *Config) GetMapHex(key string) (retval map[string][]byte) {
 	return
 }
 
+func (c *Config) GetMapHex16(key string) (retval map[string][]byte) {
+	retval = make(map[string][]byte)
+	for k, v := range c.getRawMap(key, TypeHex16) {
+		retval[k] = v.binval
+	}
+	return
+}
+
+func (c *Config) GetMapHex32(key string) (retval map[string][]byte) {
+	retval = make(map[string][]byte)
+	for k, v := range c.getRawMap(key, TypeHex32) {
+		retval[k] = v.binval
+	}
+	return
+}
+
+func (c *Config) GetMapHex64(key string) (retval map[string][]byte) {
+	retval = make(map[string][]byte)
+	for k, v := range c.getRawMap(key, TypeHex64) {
+		retval[k] = v.binval
+	}
+	return
+}
+
+func (c *Config) GetMapHex128(key string) (retval map[string][]byte) {
+	retval = make(map[string][]byte)
+	for k, v := range c.getRawMap(key, TypeHex128) {
+		retval[k] = v.binval
+	}
+	return
+}
+
 func getFirstRune(str string) rune {
 	for _, v := range str {
 		return v

parsers.go

@@ -11,7 +11,7 @@ import (
 	"time"
 )
 
-func parseInt(key string, str string, _ uint) (ret cValue) {
+func parseInt(key string, str string) (ret cValue) {
 	val, err := strconv.ParseInt(str, 10, 64)
 	if err == nil {
 		ret.intval = val
@@ -21,7 +21,7 @@ func parseInt(key string, str string, _ uint) (ret cValue) {
 	return
 }
 
-func parseMetric(key string, str string, _ uint) (ret cValue) {
+func parseMetric(key string, str string) (ret cValue) {
 	mod := int64(1)
 	str = strings.ToUpper(str)
 	if strings.HasSuffix(str, "K") {
@@ -46,7 +46,7 @@ func parseMetric(key string, str string, _ uint) (ret cValue) {
 	return
 }
 
-func parseDuration(key string, str string, _ uint) (ret cValue) {
+func parseDuration(key string, str string) (ret cValue) {
 	val, err := time.ParseDuration(str)
 	if err == nil {
 		ret.durval = val
@@ -56,7 +56,7 @@ func parseDuration(key string, str string, _ uint) (ret cValue) {
 	return
 }
 
-func parseBool(key string, str string, _ uint) (ret cValue) {
+func parseBool(key string, str string) (ret cValue) {
 	val, err := strconv.ParseBool(str)
 	if err == nil {
 		ret.boolval = val
@@ -66,21 +66,57 @@ func parseBool(key string, str string, _ uint) (ret cValue) {
 	return
 }
 
-func parseHex(key string, str string, size uint) (ret cValue) {
+func parseHex(key string, str string) (ret cValue) {
 	val, err := hex.DecodeString(str)
-	if err == nil && (size == 0 || size == uint(len(val))) {
+	if err == nil {
 		ret.binval = val
 	} else {
-		if size == 0 {
 		ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type hex.`, key))
-		} else {
-			ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type hex%d.`, key, size))
-		}
 	}
 	return
 }
 
-func parseDirectory(_ string, str string, _ uint) (ret cValue) {
+func parseHex16(key string, str string) (ret cValue) {
+	val, err := hex.DecodeString(str)
+	if err == nil && len(val) == 16 {
+		ret.binval = val
+	} else {
+		ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type hex16.`, key))
+	}
+	return
+}
+
+func parseHex32(key string, str string) (ret cValue) {
+	val, err := hex.DecodeString(str)
+	if err == nil && len(val) == 32 {
+		ret.binval = val
+	} else {
+		ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type hex32.`, key))
+	}
+	return
+}
+
+func parseHex64(key string, str string) (ret cValue) {
+	val, err := hex.DecodeString(str)
+	if err == nil && len(val) == 64 {
+		ret.binval = val
+	} else {
+		ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type hex64.`, key))
+	}
+	return
+}
+
+func parseHex128(key string, str string) (ret cValue) {
+	val, err := hex.DecodeString(str)
+	if err == nil && len(val) == 128 {
+		ret.binval = val
+	} else {
+		ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type hex128.`, key))
+	}
+	return
+}
+
+func parseDirectory(_ string, str string) (ret cValue) {
 	wd, err := os.Getwd()
 	if err == nil {
 		if path.IsAbs(str) {
@@ -94,7 +130,7 @@ func parseDirectory(_ string, str string, _ uint) (ret cValue) {
 	return
 }
 
-func parseString(_ string, str string, _ uint) (ret cValue) {
+func parseString(_ string, str string) (ret cValue) {
 	ret.strval = str
 	return
 }

typeinfo.go

@@ -1,7 +1,7 @@
 package envconf
 
 type dataTypeInfo struct {
-	parser func(string, string, uint) cValue
+	parser func(string, string) cValue
 	name   string
 }
 
@@ -16,6 +16,11 @@ func init() {
 	var dirInfo dataTypeInfo
 	var hexInfo dataTypeInfo
 
+	var hexInfo16 dataTypeInfo
+	var hexInfo32 dataTypeInfo
+	var hexInfo64 dataTypeInfo
+	var hexInfo128 dataTypeInfo
+
 	var boolInfo dataTypeInfo
 
 	intInfo.name = "int"
@@ -33,6 +38,11 @@ func init() {
 	strInfo.parser = parseString
 
 	hexInfo.parser = parseHex
+	hexInfo16.parser = parseHex16
+	hexInfo32.parser = parseHex32
+	hexInfo64.parser = parseHex64
+	hexInfo128.parser = parseHex128
+
 	boolInfo.parser = parseBool
 
 	tInfo[TypeInt] = intInfo
@@ -41,5 +51,11 @@ func init() {
 	tInfo[TypeString] = strInfo
 	tInfo[TypeDirectory] = dirInfo
 	tInfo[TypeHex] = hexInfo
+
+	tInfo[TypeHex16] = hexInfo16
+	tInfo[TypeHex32] = hexInfo32
+	tInfo[TypeHex64] = hexInfo64
+	tInfo[TypeHex128] = hexInfo128
+
 	tInfo[TypeBool] = boolInfo
 }