yeah i should have done this before, i know

session/environment.go

@@ -0,0 +1,82 @@
+package session
+
+import (
+	"fmt"
+	"sort"
+	"strconv"
+	"sync"
+)
+
+type Environment struct {
+	Padding int
+	storage map[string]string
+	lock    *sync.Mutex
+}
+
+func NewEnvironment() *Environment {
+	env := &Environment{
+		Padding: 0,
+		storage: make(map[string]string),
+		lock:    &sync.Mutex{},
+	}
+
+	return env
+}
+
+func (env *Environment) Has(name string) bool {
+	env.lock.Lock()
+	defer env.lock.Unlock()
+
+	_, found := env.storage[name]
+
+	return found
+}
+
+func (env *Environment) Set(name, value string) string {
+	env.lock.Lock()
+	defer env.lock.Unlock()
+
+	old, _ := env.storage[name]
+	env.storage[name] = value
+
+	if len(name) > env.Padding {
+		env.Padding = len(name)
+	}
+
+	return old
+}
+
+func (env *Environment) Get(name string) (bool, string) {
+	env.lock.Lock()
+	defer env.lock.Unlock()
+
+	if value, found := env.storage[name]; found == true {
+		return true, value
+	}
+
+	return false, ""
+}
+
+func (env *Environment) GetInt(name string) (error, int) {
+	if found, value := env.Get(name); found == true {
+		if i, err := strconv.Atoi(value); err == nil {
+			return nil, i
+		} else {
+			return err, 0
+		}
+	}
+
+	return fmt.Errorf("Not found."), 0
+}
+
+func (env *Environment) Sorted() []string {
+	env.lock.Lock()
+	defer env.lock.Unlock()
+
+	var keys []string
+	for k := range env.storage {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	return keys
+}