📝 Text Toolkit

Project Overview

This is program is used to let you filter, transform, and summarize the contents of any plain‑text file. It demonstrates robust file‑I/O, dynamic memory management, and plug‑and‑play “operations” implemented with function pointers and configuration structs.

🔑 Features

Menu Option	Capability	Process
1 · Filter lines	Keep lines that do not contain a user‑supplied keyword	Two‑tier loop + keyCheck() to drop matches
2 · Transform lines	U → convert every line to uppercase R → reverse each line	Action dispatched through TransformConfig
3 · Summarize lines	• total line count • frequency of a target word (case‑insensitive) • average line length	Uses helper countKeyword() & on‑the‑fly stats
4 · Exit	Quit safely, freeing all heap memory	freeLines() cleans up

Every processed result is immediately written to the output file you specify.

🛠️ Build & Run

Windows User:

1. Download VS Code and C/C++ Extension in VS Code.
2. Download MinGW. Link: https://sourceforge.net/projects/mingw/
3. In Terminal, type gcc main.c operation.c fileProcessing.c -o text-toolkit.exe for compile the program and build the executable.
4. In Terminal, type .\text-toolkit.exe to run the program.

Mac User:

1. Open Terminal, type xcode-select --install to install the Command Line Tools.
2. In Terminal, type gcc main.c operation.c fileProcessing.c -o text-toolkit for compile the prgram and build the executable.
3. Lastly, type ./text-toolkit to run the program.

✨ Implementation Highlights

• Loose coupling via function pointers

  • typedef char **(*funcPtr)(char **, int, void *, int *);
  • allows new operations to drop in without touching main.c.

• Memory‑safe patterns All heap allocations checked; buffers sized with strlen + 1; interactive input trimmed with newline guards.

• Cross‑platform build flags -Wall -Wextra -std=c11 keeps the code standards‑compliant and warning‑free.

• Clear separation of concerns

  • I/O layer: fileProcessing.*

  • Domain logic: operations.*

  • UI + flow control: main.c