PLEASE IMPLEMENT THE FOLLOWING FUNCTION USING THIS GIVEN INFO AND SCREENSHOT OF FORMAT. FUNCTION IS CALLED void list$\_$galaxy$($char $*$galaxy$\_$pathname, int long$\_$listing$).$ Subset $0$

To complete subset $0,$ you need to implement code that can

print a list of the contents of a galaxy, and

print a detailed list of the contents of a galaxy.

Subset $0$: Print a list of the contents of a galaxy

Given the $-$l command$-$line argument, space should print the path names of the files$/$directories in a galaxy.

For example:

List each item in the galaxy called text$\_$file.galaxy, which is in the examples directory

$./$space $-$l examples$/$text$\_$file.galaxy

hello.txt

List each item in the galaxy called $4\_$files.galaxy, which is in the examples directory

$./$space $-$l examples$/4\_$files.galaxy

$256.$bin

hello.txt

last$\_$goodbye.txt

these$\_$days.txt

List each item in the galaxy called hello$\_$world.galaxy, which is in the examples directory

$./$space $-$l examples$/$hello$\_$world.galaxy

hello.c

hello.cpp

hello.d

hello.go

hello.hs

hello.java

hello.js

hello.pl

hello.py

hello.rs

hello.s

hello.sh

hello.sql

Subset $0$: Print a detailed list of the contents of a galaxy

Given the $-$L command$-$line argument, space should, for each file in the specified galaxy, print:

the file$/$directory permissions,

the star format which will be one of $6,7$ or $8($the default$),$

the file$/$directory size in bytes, and

the file$/$directory path name.

$./$space $-$L examples$/$text$\_$file.galaxy

$-$rw$-$r$--$r$--856$ hello.txt

List the details of each item in the galaxy called $4\_$files.galaxy, which is in the examples directory

$./$space $-$L examples$/4\_$files.galaxy

$-$rw$-$r$--$r$--8256256.$bin

$-$rw$-$r$--$r$--856$ hello.txt

$-$r$--$r$--$r$--8166$ last$\_$goodbye.txt

$-$r$--$rw$-$r$--8148$ these$\_$days.txt

List the details of each item in the galaxy called hello$\_$world.galaxy, which is in the examples directory

$./$space $-$L examples$/$hello$\_$world.galaxy

$-$rw$-$r$--$r$--893$ hello.c

$-$rw$-$r$--$r$--882$ hello.cpp

$-$rw$-$r$--$r$--865$ hello.d

$-$rw$-$r$--$r$--877$ hello.go

$-$rw$-$r$--$r$--832$ hello.hs

$-$rw$-$r$--$r$--8117$ hello.java

$-$rw$-$r$--$r$--830$ hello.js

$-$rwxr$-$xr$-$x $847$ hello.pl

$-$rwxr$-$xr$-$x $8103$ hello.py

$-$rw$-$r$--$r$--845$ hello.rs

$-$rw$-$r$--$r$--8123$ hello.s

$-$rwxr$-$xr$-$x $841$ hello.sh

$-$rw$-$r$--$r$--824$ hello.sql

space$\_$main.c calls the function list$\_$galaxy in space.c when either of the $-$l or $-$L options are specified on the command line.

Add code to list$\_$galaxy in space.c$.$

Use fopen to open the galaxy file.

Use fgetc to read bytes.

Make sure you understand the star format specification below

Use C bitwise operations such as $$ & and $|$ to combine bytes into integers.

Think carefully about the functions you can construct to avoid repeated code.

Review print$\_$bytes.c from our week $8$ lab.

fseek can be used to skip over parts of the galaxy file, but you can also use a loop and fgetc

The order you list files is the order they appear in the galaxy.

galaxy files do not necessarily end with $.$galaxy. This has been done with the provided example files purely as a convenience.

Hint: use a format like $"\%5$lu$"$ to print the file size. IMPLEMENT "void list$\_$galaxy$($char $*$galaxy$\_$pathname, int long$\_$listing$)"$ don't use fgets but use fgetc.The galaxy and star format

galaxies must follow exactly the format produced by the reference implementation.

A galaxy consists of a sequence of one or more stars. Each star contains the information about one file or directory.

The first byte of a galaxy file is the first byte of the first star. That star is immediately followed by either another star, or by

the end of the galaxy file.