1 files changed, 61 insertions, 0 deletions
diff --git a/_examples/merge_base/helpers.go b/_examples/merge_base/helpers.go
new file mode 100644
index 0000000..b7b1ed6
--- /dev/null
+++ b/_examples/merge_base/helpers.go
@@ -0,0 +1,61 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"gopkg.in/src-d/go-git.v4/plumbing/object"
+)
+
+func checkIfError(err error, code exitCode, mainReason string, v ...interface{}) {
+	if err == nil {
+		return
+	}
+
+	printErr(wrappErr(err, mainReason, v...))
+	os.Exit(int(code))
+}
+
+func helpAndExit(s string, helpMsg string, code exitCode) {
+	if code == exitCodeSuccess {
+		printMsg("%s", s)
+	} else {
+		printErr(fmt.Errorf(s))
+	}
+
+	fmt.Println(strings.Replace(helpMsg, "%_COMMAND_NAME_%", os.Args[0], -1))
+
+	os.Exit(int(code))
+}
+
+func printErr(err error) {
+	fmt.Printf("\x1b[31;1m%s\x1b[0m\n", fmt.Sprintf("error: %s", err))
+}
+
+func printMsg(format string, args ...interface{}) {
+	fmt.Printf("%s\n", fmt.Sprintf(format, args...))
+}
+
+func printCommits(commits []*object.Commit) {
+	for _, commit := range commits {
+		if os.Getenv("LOG_LEVEL") == "verbose" {
+			fmt.Printf(
+				"\x1b[36;1m%s \x1b[90;21m%s\x1b[0m %s\n",
+				commit.Hash.String()[:7],
+				commit.Hash.String(),
+				strings.Split(commit.Message, "\n")[0],
+			)
+		} else {
+			fmt.Println(commit.Hash.String())
+		}
+	}
+}
+
+func wrappErr(err error, s string, v ...interface{}) error {
+	if err != nil {
+		return fmt.Errorf("%s\n  %s", fmt.Sprintf(s, v...), err)
+	}
+
+	return nil
+}