Error control improved, add comments and headers, null option included (cancel button)

jka-toolkit/gitdit

@@ -1,22 +1,38 @@
 #!/bin/bash
-VERSION="0.2.1"
+# gitdit, a dialog interface to manage git repositories 
+# Author: JKA Network - contacto@jkanetwork.com
+
+VERSION="0.2.2"
+#First check if the user is in a git repository
 preOption=$(git status 2>/dev/stdout | sed -n 1p | cut -f2 -d" ")
-if [ $preOption = "Not" ];then
+if [ $preOption = "Not" ];then #When it isn't only it can do git clone
 	gitopt=`dialog --stdout --scrollbar --menu "gitdit - Git DIalog inTerface" 0 0 6 c "Descargar un nuevo git (Hacer clone)"`
-else
+else #Else, all other options
 	gitopt=`dialog --stdout --scrollbar --menu "gitdit - Git DIalog inTerface" 0 0 6 p "Descargar actualizaciones del git (Hacer pull)" t "Confirmar cambios sin subida" s "Subir actualizaciones al git (Hacer push)" n "Crear nueva rama" b "Cambiar de branch/rama (Hacer checkout)" m "Unir ramas (Hacer merge)"`
-	actual="origin $(git branch --list | grep "^*" | cut -f2 -d" ")"
+	actual="origin $(git branch --list | grep "^*" | cut -f2 -d" ")" #Current branch
 fi
+if [ ! -z $gitopt ];then #No canceled
 	case $gitopt in
-	"p")	git pull $actual;;
-	"s")	commit=`dialog --stdout --inputbox  "Cambios (texto commit)" 10 50 "changes"`
+		"p")	
+			git pull $actual;;
+		"s")	
+			estado=$(git status | wc -l) #It need to commit something?
+			if [ $estado -ne 2 ];then #When is necesary commit
+				commit=`dialog --stdout --inputbox  "Cambios (texto commit)" 10 50 "changes"`
 				if [[ -z $commit ]];then
 					commit="changes"
 				fi
 				git add . && git commit -m "$commit" && git push $actual
+			else #Nothing to commit, only push
+				git push $actual
+			fi
 			;;
 		"c")
 			giturl=`dialog --stdout --inputbox  "URL del git" 10 60`
+			if [ -z $giturl ];then
+				echo "Ningún repositorio especificado"
+				exit
+			fi
 			git clone $giturl
 			;;
 		"t")
@@ -66,3 +82,4 @@ case $gitopt in
 			fi		
 			;;
 	esac
+fi