I called a Function recursively using shellscript,but the function doesnt accept the arguments while calling function recusively,infinite loop runs - shell

Question

I am trying to print the sub-file and sub directories of a Specific file. The case is, I will be giving the location of the root-folder directly.First it should print the files and directories of the root-folder,in-case of files , it should only print the name of the file and return .In-case of folders, it should print the folder name and traverse through that sub- folder and print the files and folders present in it . So the case is, if it is file then print the name of file and leave else if it is a folder present ,recursively traverse through the folder and print the contents inside and if you find sub-folder in this folder, again recursively traverse it till you find no folder present. I need to execute in shell-script language
I had writen the sample code for this in java. This is the code logic. I am trying the same logic in shellscript but whenever I call the function recursively,it runs a infinite loop in shell script
Java code :
import java.io.File;
import java.nio.file.Files;
public class Recursion
{
public static void fileRecursive(File root)
{
System.out.println(root.getName());
if(root.isFile())
{
return;
}
else
{
File[] files = root.listFiles();
for(File file : files)
{
fileRecursive(file);
}
}
}
public static void main(String args[])
{
File directoryPath = new File("/home/keshav/Main");
System.out.println("Root Folder : "+directoryPath.getName());
fileRecursive(directoryPath);
}
}
Shell-Script Code:
FileTraverse()
{
path=$dirname
if [ -f "$path" ];
then
return;
else
for dir in `ls $dirname`;
do
FileTraverse $dir
done
fi
}
echo "Enter Root directory name"
read dirname
FileTraverse $dirname

Answer 1

Analyzing your program, we can see:
You assign a value to the variable dirname only once (outside the function in the read statement), but never assign a new value for it. Every invocation of the function (including the recorsive ones) use the same value for this variable.
You call your function by passing a parameter, but you never actually use this parameter.
Solution: Inside the function do a
path=$1
as a first statement and in the function body, replace each occurance of dirname by path.