Libft.md

This document outlines the requirements for creating a custom library named libft.a as part of LIBFT project. The library aims to replicate and extend functionalities found in the C Standard Library (libc).

Overview

Upon completion of my task, I have developed a custom library named libft.a, meticulously replicating and enhancing functionalities found in the C Standard Library (libc). This library comprises a collection of functions prefixed with ft_, designed to closely mirror the behavior of certain libc functions, alongside implementing several utility functions that either complement or offer alternative solutions to those found in libc.

Requirements

Mandatory Part

• Program Name: libft.a
• Files Submitted:
  • Makefile
  • libft.h
  • ft_*.c (various function names represented by *)

Makefile

The Makefile includes targets for building (all), cleaning up object files (clean), removing all generated files including the library itself (fclean), and rebuilding the library (re).

External Functions

No external libraries were utilized during the development of this project.

Implementation Details

• Global Variables: Carefully avoided to maintain clean and modular code.
• Helper Functions: Utilized static functions within files where necessary for efficient code organization.
• File Placement: Ensured all files are located at the root of the repository for easy access and maintenance.
• Unused Files: No unused files were submitted, adhering to the requirement for a streamlined submission.
• Compilation Flags: Compiled all .c files with -Wall, -Wextra, and -Werror to enforce strict coding standards.
• Library Creation: Leveraged ar for library creation, strictly avoiding libtool as per the project specifications.
• Library Location: Placed libft.a at the root of the repository for ease of access and integration.

Part 1: libc Functions Replication

Implemented a comprehensive set of libc functions with the ft_ prefix, adhering to their original behavior as described in their man pages, excluding the use of the restrict qualifier. This includes functions such as isalpha, isdigit, isalnum, isascii, isprint, strlen, memset, bzero, memcpy, memmove, strlcpy, strlcat, toupper, tolower, strchr, strrchr, strncmp, memchr, memcmp, strnstr, atoi, along with the implementation of calloc and strdup utilizing malloc().

Part 2: Additional Functions

Developed a suite of utility functions, some of which utilize malloc(), including ft_substr, ft_strjoin, ft_strtrim, ft_split, ft_itoa, ft_strmapi, ft_striteri, ft_putchar_fd, ft_putstr_fd, ft_putendl_fd, and ft_putnbr_fd.

Bonus Part

Following the successful completion of the mandatory part, I chose to implement additional functions for working with linked lists. These functions were added to libft.h and included in the libft.a library through a make bonus target.

Conclusion

This project has been a rewarding exploration of C programming, focusing on memory management, string manipulation, and basic data structures. The development of libft.a has honed my skills in creating robust and reusable code components, contributing to a deeper understanding of the C Standard Library and its practical applications.