Libft

<h1 align="center"> Libft - @42sp </h1> <p align="center">:information_source: A C static library with recoded standard functions </p> <p align="center"><a href="https://www.42sp.org.br/" target="_blank"><img src="https://img.shields.io/static/v1?label=&message=SP&color=000&style=for-the-badge&logo=42""></a></p> <p align="center"><img src="https://user-images.githubusercontent.com/81205527/149165832-9344c9e5-6075-4268-b276-26b60efc5733.png"> </p> <p align="center"> <strong>125/100</strong> ✅ </p> <p align="center"><a href="https://github.com/augustobecker/Libft/blob/master/README-ptbr.md" target="_blank"><img src="https://img.shields.io/badge/dispon%C3%ADvel%20tamb%C3%A9m%20em-PT--BR-yellow"></a></p>

Index

• What is Libft?
• Requirements
• Functions
• Makefile
  • Colorful Makefile
• How does it work?
• How do I use the library?
• How do I test it?
• 42 Cursus
• Author

<h2 align="center" id="what-is-libft"> What is Libft? </h2>

The first project at 42 programming school. It consists of a static library with recoded standard functions in C that runs and compiles the code using a Makefile. The library can be used as a support in future school's projects, since it's not allowed to use the original functions. Once you finish the project, you can (and should) include more functions to Libft than previously asked. For example, now the projects <a href="https://github.com/augustobecker/get_next_line">get_next_line</a> and <a href="https://github.com/augustobecker/ft_printf">ft_printf</a> are part of my library.

The project is divided in three parts - Part I, Part II and Bonus.

Part I.

In this first part, you must re-code a set of the libc functions, as defined in their man. Your functions will need to present the same prototype and behaviors as the originals. Your functions’ names must be prefixed by “ft_”. For instance strlen becomes ft_strlen.

<p align="center">• isalpha • isdigit • isalnum • isascii • isprint • strlen • memset • bzero • memcpy • memmove • strlcpy • strlcat • toupper • tolower • strchr • strrchr • strncmp • memchr • memcmp • strnstr • atoi • calloc • strdup</p>

Part II.

In this second part, you must code a set of functions that are either not included in the libc, or included in a different form. Some of these functions can be useful to write Part 1’s functions.

<p align="center">• substr • strjoin • strtrim • split • itoa • strmapi • striteri • putchar_fd • putstr_fd • putendl_fd • putnbr_fd</p>

Bonus.

In this Bonus part, you must code a set of functions that are useful to manipulate lists.

<p align="center">• lstnew • lstadd_front • lstsize • lstlast • lstadd_back • lstdelone • lstclear • lstiter • lstmap</p> <h2 align="center" id="requirements"> Requirements </h2> <p align="center"> :warning: The project must be written in accordance with the <a href="https://github.com/42School/norminette/blob/master/pdf/en.norm.pdf" target="_blank">Norm</a> </p> The Norm is a programming standard that defines a set of rules to follow when writing code at 42. It applies to all C projects within the Common Core by default, and to any project where it's specified. These are some of them:

Each function must be maximum 25 lines, not counting the function's own curly brackets.

Each line must be at most 80 columns wide, comments included.

A function can take 4 named parameters maximum.

You can't declare more than 5 variables per function.

You're not allowed to use: for , do...while , switch , case ,  goto  ,
ternary operators such as `?' and VLAs - Variable Length Arrays.

The norminette (as we call the norm at 42) is in python and open source.

Its repository is available at https://github.com/42School/norminette.

In addition to the Norm, the subject have other requirements, which are:

It is forbidden to declare global variables.

Using the command libtool to create your library is forbidden.

Your Makefile must compile with the flags -Wall, -Wextra and -Werror.

<h2 align="center" id="functions"> Functions </h2>

Those are the my Libft's functions today - some of them are not part of the subject - Once we're allowed to keep expanding our library to help us in other projects at 42.

Functions from <ctype.h>

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_isalpha.c">ft_isalpha</a> - checks for an alphabetic character.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_isdigit.c">ft_isdigit</a> - checks for a digit (0 through 9).

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_isalnum.c">ft_isalnum</a> - checks for an alphanumeric character.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_isascii.c">ft_isascii</a> - checks whether c fits into the ASCII character set.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_isprint.c">ft_isprint</a> - checks for any printable character.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_toupper.c">ft_toupper</a> - convert char to uppercase.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_tolower.c">ft_tolower</a> - convert char to lowercase.

Functions from <string.h>

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_memset.c">ft_memset</a> - fill memory with a constant byte.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_strlen.c">ft_strlen</a> - calculate the length of a string.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_bzero.c">ft_bzero</a> - zero a byte string.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_memcpy.c">ft_memcpy</a> - copy memory area.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_memmove.c">ft_memmove</a> - copy memory area.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_strlcpy.c">ft_strlcpy</a> - copy string to an specific size.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_strlcat.c">ft_strlcat</a> - concatenate string to an specific size.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_strchr.c">ft_strchr</a> - locate character in string.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_strrchr.c">ft_strrchr</a> - locate character in string.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_strncmp.c">ft_strncmp</a> - compare two strings.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_memchr.c">ft_memchr</a> - scan memory for a character.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_memcmp.c">ft_memcmp</a> - compare memory areas.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_strnstr.c">ft_strnstr</a> - locate a substring in a string.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_strdup.c">ft_strdup</a> - creates a dupplicate for the string passed as parameter.

Functions from <stdlib.h>

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_atoi.c">ft_atoi</a> - convert a string to an integer.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_calloc.c">ft_calloc</a> - allocates memory and sets its bytes' values to 0.

Non-standard functions

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_substr.c">ft_substr</a> - returns a substring from a string.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_strjoin.c">ft_strjoin</a> - concatenates two strings.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_strtrim.c">ft_strtrim</a> - trims the beginning and end of string with specific set of chars.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_split.c">ft_split</a> - splits a string using a char as parameter.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_itoa.c">ft_itoa</a> - converts a number into a string.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_strmapi.c">ft_strmapi</a> - applies a function to each character of a string.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_striteri.c">ft_striteri</a> - applies a function to each character of a string.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_putchar_fd.c">ft_putchar_fd</a> - output a char to a file descriptor.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_putstr_fd.c">ft_putstr_fd</a> - output a string to a file descriptor.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_putendl_fd.c">ft_putendl_fd</a> - output a string to a file descriptor, followed by a new line.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_putnbr_fd.c">ft_putnbr_fd</a> - output a number to a file descriptor.

Linked list functions

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_lstnew.c">ft_lstnew</a> - creates a new list element.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_lstadd_front.c">ft_lstadd_front</a> - adds an element at the beginning of a list.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_lstsize.c">ft_lstsize</a> - counts the number of elements in a list.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_lstlast.c">ft_lstlast</a> - returns the last element of the list.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_lstadd_back.c">ft_lstadd_back</a> - adds an element at the end of a list.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_lstclear.c">ft_lstclear</a> - deletes and free list.

• <a href="https://github.com/augustobecker/Libft/blob/master/ft_lstiter.c">ft_lstiter</a> - applies a function to each element of a list.

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