I hate commit messages

contract_getter.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"encoding/json"
+	"errors"
+	"io/ioutil"
+	"os"
+
+	"github.com/didiercrunch/filou/contract"
+)
+
+func fileExists(path string) bool {
+	_, err := os.Stat(path)
+	if err == nil {
+		return true
+	}
+	if os.IsNotExist(err) {
+		return false
+	}
+	return false
+}
+
+func getFileContract(path string) (*contract.PublicContract, error) {
+	ret := new(contract.PublicContract)
+	if data, err := ioutil.ReadFile(path); err != nil {
+		return nil, err
+	} else if err = json.Unmarshal(data, ret); err != nil {
+		return nil, err
+	} else {
+		return ret, nil
+	}
+}
+
+func GetContract(location string) (*contract.PublicContract, error) {
+	switch {
+	case fileExists(location):
+		return getFileContract(location)
+	default:
+		return nil, errors.New("could not find public contract at " + location)
+	}
+}