test

datatype.go

@@ -1,4 +1,9 @@
 package envconf
+import ("fmt"
+        "errors"
+        "time"
+        "strconv")
+
 type DataType int
 const (
     TypeNone DataType = iota
@@ -21,3 +26,59 @@ func (dtype DataType) String()(string) {
     }
     return "invalid"
 }
+
+type cValue struct {
+    intval int64
+    durval time.Duration
+    boolval bool
+    strval string
+    err error
+}
+
+func (dtype DataType) parse(key string, str string)(ret cValue) {
+    parsers := make(map[DataType](func(string,string)(cValue)))
+    parsers[TypeInt] = parseInt
+    parsers[TypeDuration] = parseDuration
+    parsers[TypeString] = parseString
+    parsers[TypeBool] = parseBool
+    parser, ok := parsers[dtype]
+    if ok {
+        return parser(key, str)
+    }
+    return
+}
+
+func parseInt(key string, str string)(ret cValue) {
+    val, err := strconv.ParseInt(str, 10, 64)
+    if err == nil {
+        ret.intval = val
+    } else {
+        ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type int.`, key))
+    }
+    return
+}
+
+func parseDuration(key string, str string)(ret cValue) {
+    val, err := time.ParseDuration(str)
+    if err == nil {
+        ret.durval = val
+    } else {
+        ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type duration.`, key))
+    }
+    return
+}
+
+func parseBool(key string, str string)(ret cValue) {
+    val, err := strconv.ParseBool(str)
+    if err == nil {
+        ret.boolval = val
+    } else {
+        ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type bool.`, key))
+    }
+    return
+}
+
+func parseString(_ string, str string)(ret cValue) {
+    ret.strval = str
+    return
+}

main.go

@@ -2,9 +2,8 @@ package envconf
 
 import ("strings"
         "unicode"
-        "strconv"
-        "time"
         "errors"
+        "time"
         "fmt"
         "os")
 
@@ -15,14 +14,6 @@ type cEntry struct {
     unset bool
     empty bool
 }
-
-type cValue struct {
-    intval int64
-    durval time.Duration
-    strval string
-    err error
-}
-
 type Config struct {
     parsed bool
     env map[string]cEntry
@@ -81,41 +72,68 @@ func (c *Config) DefineDefault(key string, val string, dtype DataType) {
 
 func (c *Config) Parse() {
     c.parsed = true
-    parsers := make(map[DataType](func(string)(cValue)))
-    parsers[TypeInt] = parseInt
-    parsers[TypeDuration] = parseDuration
-
     for k,v := range c.env {
-        parser, ok := parsers[v.dtype]
-        if ok {
         if v.empty {
             if v.unset {
-                    v.parsed.err = errors.New(fmt.Sprintf("Environment variable %s not found. It should have been of type %s", k, v.dtype))
+                v.parsed.err = errors.New(fmt.Sprintf(`Environment variable "%s" not found. It should have been of type %s.`, k, v.dtype))
                 c.env[k] = v
             }
         } else {
-                v.parsed = parser(v.value)
+            v.parsed = v.dtype.parse(k, v.value)
             c.env[k] = v
         }
     }
 }
-}
 
-func (c *Config) Show() {
+func (c *Config) Status()(ok bool) {
+    ok = c.parsed
+    if ok {
         for _,v := range c.env {
-        fmt.Println(v.parsed.err)
+            err := v.parsed.err
+            if err != nil {
+                ok = false
+                fmt.Println(err)
+            }
         }
     }
-
-
-func parseInt(str string)(ret cValue) {
-    ret.intval, ret.err = strconv.ParseInt(str, 10, 64)
     return
 }
 
-func parseDuration(str string)(ret cValue) {
+func (c *Config) GetInt(key string)(int64) {
-    ret.durval, ret.err = time.ParseDuration(str)
+    if c.parsed {
-    return
+        entry, ok := c.env[key]
+        if ok {
+            return entry.parsed.intval
+        }
+    }
+    return 0
+}
+func (c *Config) GetString(key string)(string) {
+    if c.parsed {
+        entry, ok := c.env[key]
+        if ok {
+            return entry.parsed.strval
+        }
+    }
+    return ""
+}
+func (c *Config) GetDuration(key string)(time.Duration) {
+    if c.parsed {
+        entry, ok := c.env[key]
+        if ok {
+            return entry.parsed.durval
+        }
+    }
+    return time.Duration(0)
+}
+func (c *Config) GetBool(key string)(bool) {
+    if c.parsed {
+        entry, ok := c.env[key]
+        if ok {
+            return entry.parsed.boolval
+        }
+    }
+    return false
 }
 
 func getFirstRune(str string)(rune) {
@@ -124,5 +142,3 @@ func getFirstRune(str string)(rune) {
     }
     return rune(0)
 }
-
-