C String Library

A simple C library implementing common string functions with safe behavior and extensive unit tests.

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Features

This library provides custom implementations of:

• my_strcmp, my_strncmp — Compare strings
• my_strcpy, my_strncpy — Copy strings safely
• my_strcat — Concatenate strings with buffer checks
• reverse — Reverse a string in-place
• my_split — Split a string by a delimiter into a dynamically allocated array of strings

All functions handle edge cases, such as NULL pointers, empty strings, buffer size limits, and more.

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Project Structure

.
├── include/
│   ├── my_string.h      # Main library header
│   ├── common.h         # Common test utilities
│   └── acutest.h        # Testing framework
├── src/
│   └── main.c           # Library implementations
├── tests/
│   ├── test_strcmp.c
│   ├── test_strcat.c
│   ├── test_strcpy.c
│   ├── test_strncmp.c
│   ├── test_strncpy.c
│   ├── test_reverse.c
│   └── test_split.c
├── Makefile
└── README.md

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Requirements

• GCC or compatible C compiler (tested on MinGW)
• Make or compatible build tool

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Building

Compile the library and build all tests:

make

Or build just the tests:

make tests

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Testing

Run all tests:

make run-tests

Run a specific test:

make run-test TEST=test_strcmp

Available tests: test_strcmp, test_strcpy, test_strcat, test_strncmp, test_strncpy, test_reverse, test_split

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Cleaning

Remove build artifacts:

make clean

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License

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