wordc Replica in Go

This is a simple Go implementation of the Unix wc (word count) command. It counts bytes, lines, words, and characters in a file or from standard input, based on the provided flags.

Features

• Byte Count (-c): Count the number of bytes in the file.
• Line Count (-l): Count the number of lines in the file.
• Word Count (-w): Count the number of words in the file.
• Character Count (-m): Count the number of characters in the file.

Usage

The program can be run with or without a file argument. If no file is specified, it reads from standard input.

Command-Line Syntax

wordc [flags] [file]

Flags

• -c: Count bytes in the file.
• -l: Count lines in the file.
• -w : Count words in the file.
• -m: Count characters in the file.

Examples

Count bytes, lines, words, and characters in example.txt

wordc -c -l -w -m example.txt

Count bytes and words in example.txt

wordc -c -w example.txt

Read from standard input and count lines and words

echo -e "Hello\nWorld" | wordc -l -w

Behavior

• If no file argument is provided, the program reads from standard input.
• If no flags are specified, the program defaults to counting bytes, lines, words, and characters.
• The output format is a space-separated list of counts, followed by the file name (or - for standard input).

Implementation Details

• Bytes: Counted using len(content).
• Lines: Counted by counting newline characters.
• Words: Counted by splitting the content into fields using strings.Fields.
• Characters: Counted using utf8.RuneCountInString.

The program ensures compatibility with standard input by checking if the input is coming from a terminal or not. If it is from a terminal, the program exits with an error message indicating that no input was provided.

License

This project is licensed under the MIT License. See the LICENSE file for details.