gocctr

Overview

The mytrtool is a command-line tool written in Go that provides functionality similar to the UNIX tr command. It supports various operations like character translation, deletion, and squeezing based on user-defined rules.

Features

• Translate characters from one set to another
• Support for character ranges and character classes
• Delete specified characters from the input
• Squeeze repeated occurrences of characters into a single instance

Usage

Get started with mytrtool by providing substitution rules and specifying additional options to customize the translation process.

The following options are supported:

• -d: Delete mode. Delete characters specified in the substitution rule from the input.
• -s: Squeeze mode. Squeeze multiple occurrences of characters listed in the last operand into a single instance.
• rule: The substitution rule. Specify two characters or a character class separated by a space. For example:
  • A-Z a-z: Translate uppercase to lowercase.
  • [:upper:] [:lower:]: Use character classes for translation.
• The functional requirements for tr are concisely described by it’s man page - give it a go in your local terminal now:

  % man tr

Character Classes:

• [:alnum:]: Alphanumeric characters (letters and digits).
• [:alpha:]: Alphabetic characters (letters).
• [:blank:]: Whitespace characters.
• [:cntrl:]: Control characters.
• [:digit:]: Numeric characters (digits).
• [:lower:]: Lowercase alphabetic characters.
• [:print:]: Printable characters.
• [:punct:]: Punctuation characters.
• [:rune:]: Valid Unicode characters.
• [:space:]: Space characters.
• [:special:]: Special characters.
• [:upper:]: Uppercase alphabetic characters.

Installation

Clone the repository and use the provided build.sh script to build mycurl. Ensure that you have Go installed on your machine.

git clone https://github.com/TESLA2402/gocctr.git
cd tr
chmod +x build.sh
./build.sh

Examples:

# If build script implemented

# Translate C -> c
mytrtool C c

# Translate uppercase to lowercase
head -n3 test.txt | mytrtool A-Z a-z

# Delete characters specified in the substitution rule
head -n3 test.txt | mytrtool -d War

# Squeeze multiple occurrences of characters
mytrtool -s AB

# Use character classes for translation
mytrtool "[:upper:]" "[:lower:]"
head -n3 test.txt | mytrtool "[:upper:]" "[:lower:]"

# Test for large amount of input
seq 1 3000 | xargs -Inone cat test.txt | mytrtool "[:upper:]" "[:lower:]" > result.txt

 OR

# Translate C -> c
go run cctr.go C c

# Translate uppercase to lowercase
head -n3 test.txt | go run cctr.go A-Z a-z

# Delete characters specified in the substitution rule
head -n3 test.txt | go run cctr.go -d War

# Squeeze multiple occurrences of characters
go run cctr.go -s AB

# Use character classes for translation
go run cctr.go "[:upper:]" "[:lower:]"
head -n3 test.txt | go run cctr.go "[:upper:]" "[:lower:]"

# Test for large amount of input
seq 1 3000 | xargs -Inone cat test.txt | go run cctr.go "[:upper:]" "[:lower:]" > result.txt