add history flag

comitium.go

@@ -14,6 +14,7 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
+	"strconv"
 
 	"github.com/mitchellh/go-homedir"
 	"golang.nytpu.com/comitium/localizations"
@@ -68,7 +69,13 @@ func main() {
 	// make sure it exists so we can start working with files in it
 	os.MkdirAll(dataPath, os.ModePerm)
 
-	err := core.Init(dataPath, localizer, 0)
+	days, err := getHist()
+	if err != nil {
+		fmt.Fprint(os.Stderr, err)
+		os.Exit(1)
+	}
+
+	err = core.Init(dataPath, localizer, days)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, core.TranslateStringLocalizer(
 			localizer, "%s\n",
@@ -203,6 +210,13 @@ func getLang() *localizations.Localizer {
 	return localizations.New(lang.String(), supportedLangs[0].String())
 }
 
+func getHist() (days int, err error) {
+	if env := os.Getenv("COMITIUM_HISTORY"); env != "" && *histFlag != 31 {
+		return strconv.Atoi(env)
+	}
+	return *histFlag, nil
+}
+
 func usage() {
 	fmt.Fprintf(os.Stderr, "Usage:\n")
 	fmt.Fprintf(os.Stderr, "  %v <command> [FLAGS] [ARGUMENTS]\n\n", os.Args[0])