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Project Goals
In this project, you will be developing a simple Java application (textprocessor) using an agile, test-driven process involving multiple deliverables. While you will receive one grade for the entire project, each deliverable must be completed by its own due date,and all deliverables will contribute to the overall project grade.
Specification of the textprocessor Utility
textprocessor is a command-line utility written in Java with the following specification:
Summary
textprocessor allows for simple text manipulation of the contents of a file.
Syntax
textprocessor [OPTIONS] FILE
Description
Program textprocessor performs basic text transformations on lines of text from an input FILE. Unless the -o option (see below) is specified, the program writes transformed text to stdout and errors/usage messages to stderr. The FILE parameter is required and must be the last parameter. OPTIONS may be zero or more of the following and may occur in any order:
The program writes the output to output_file_name with transformed text instead of writing to stdout. If output_file_name already exists, the program shall result in an error.
Used with the -r flag and -k flag ONLY; the search of -r or -k becomes case-insensitive.
Keep only the lines containing substring. The search for substring is case-sensitive, unless option -i is set. This option must be mutually exclusive with -r below.
Replaces the first instance of string old in each line with string new. The search for old is case-sensitive, unless option -i is set. This option must be mutually exclusive with -k above.
Adds the string suffix at the end of each line.● -n <padding>
Add a line number followed by a single space to the beginning of each line, where padding is an integer in the inclusive range of 1 to 9 specifying the minimum padding of the line number field. If the number of digits in the line number is less than the specified padding, zeros are left padded until the minimum padding is reached. If the number of digits in the line number is greater than the specified padding, the line number is never truncated. Line numbering should start at 1.
This option must be mutually exclusive with -w below.
Removes all whitespace from lines. For this assignment, whitespace will count as any spaces, ” “, or tabs, “\t”, in the input file. It must be mutually exclusive with -n above.
NOTES:
○ Options -o/-i shall be processed first, as they determine global parameters of the computation.
○ Options -k, -r, -n, -w, and -s, shall be processed in this order. That is: (1) if -k is present, then the file content is filtered based on the specified parameter, using a case insensitive search if -i is present; (2) if -r is present, then replacements are performed based on the option parameters, using a case insensitive search if -i is present; (3) if -n is present, then a line number is applied; (4) if -w is present, then whitespace from the line is removed; (5) if -s is present, then a suffix shall be applied.
test cases using these values as option parameters.