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I've got some Java pseudocode that uses whitespace instead of curly braces, and I want you to convert it.

##I/O Your program should take an input file along with a number designating how many spaces are used to indent a block. Here's an example:

$ convert.lang input.p 4
// Convert using 4 spaces as the block delimiter
$ convert.lang input.p 2
// Convert using 2 spaces as the block delimiter

It should then convert the result using the specified block delimiter and output the result to stdout.

##The meat of the program Blocks open with : and each line within the block is indented using the block delimiter, like Python code.

while(true):
 System.out.println("Test");

Each : is replaced with a {, and a } is appended to the end of the block.

while(true) {
 System.out.println("Test");
}

##Examples Input:

public class Test:
 public static void main(String[] args):
 System.out.println("Java is verbose...");

Output:

$ convert Test.pseudojava 4
public class Test {
 public static void main(String[] args) {
 System.out.println("Java is verbose...");
 }
}

Input:

main():
 printf("Hello World");

Output:

$ convert test.file 2
main() {
 printf("Hello World");
}

Input:

def generic_op(the_stack, func):
 # Generic op handling code
 b = the_stack.pop()
 if isinstance(b, list):
 if b:
 return
 top = b.pop(0)
 while b:
 top = func(top, b.pop(0))
 the_stack.push(top)
 else:
 a = the_stack.pop()
 return func(a, b)

Output:

$ convert code.py 4
def generic_op(the_stack, func){
 # Generic op handling code
 b = the_stack.pop()
 if isinstance(b, list) {
 if b {
 return
 }
 top = b.pop(0)
 while b {
 top = func(top, b.pop(0))
 }
 the_stack.push(top)
 }
 else {
 a = the_stack.pop()
 return func(a, b)
 }
}

##Scoring The code with the least amount of bytes wins!