| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748 |
- #!/usr/bin/env python3
- # sys: for reading command-line arguments.
- # rich: for coloring the text.
- import sys
- from rich import print
- # Print Usage message if enough arguments are not passed.
- if len(sys.argv) < 3:
- print("Usage:")
- print("\tMust provide two file names as command-line arguments.")
- print("\tdiff.py <orignal_file> <changed_file>")
- exit(1)
- orignal = sys.argv[1]
- changed = sys.argv[2]
- # Read the contents of the files in lists.
- orignal_contents = open(orignal, "r").readlines()
- changed_contents = open(changed, "r").readlines()
- color = "green"
- symbol = f"[bold {color}][+]"
- print()
- # Determine which file has changed much.
- if len(changed_contents) <= len(orignal_contents):
- color = "red"
- symbol = f"[bold {color}][-]"
- smallest_sloc, largest_sloc = changed_contents, orignal_contents
- else:
- smallest_sloc, largest_sloc = orignal_contents, changed_contents
- # Go over all the lines to check the changes.
- for line in range(0, len(smallest_sloc)):
- if orignal_contents[line] == changed_contents[line]:
- # Ignore if the lines are same.
- continue
- else:
- # Display the changes on the respective lines of the files.
- print(f"[bold red][-] Line {line + 1}:[/bold red] {orignal_contents[line]}", end = "")
- print(f"[bold green][+] Line {line + 1}:[/bold green] {changed_contents[line]}")
- # Show the additions [+] or deletions [-] for the file that is the largest.
- if line == len(smallest_sloc) - 1:
- for new_line in range(line + 1, len(largest_sloc)):
- print(f"{symbol} Line {new_line + 1}:[/bold {color}] {largest_sloc[new_line]}")
|
