Candec / libft

42 Libft

lvl_0_LIBFT - Your very first own library

This library is part of the 42 Cursus - Started on Feb 2021 at 42 Lisbon.

Index

1. Functions
   1. Part One - Libc functions
   2. Part Two - Additional functions
   3. Part Three - Bonus part
2. Cheatsheet

Functions

1. Part One - Libc functions

1. ft_atoi
2. ft_bzero
3. ft_calloc
4. ft_isalnum
5. ft_isalpha
6. ft_isascii
7. ft_isdigit
8. ft_isprint
9. ft_memset
10. ft_memcpy
11. ft_memccpy
12. ft_memmove
13. ft_memchr
14. ft_memcmp
15. ft_strchr
16. ft_strlcat
17. ft_strlcpy
18. ft_strlen
19. ft_strncmp
20. ft_strnstr
21. ft_strrchr
22. ft_strdup
23. ft_tolower
24. ft_toupper

2. Part Two - Additional functions

1. ft_substr
2. ft_strjoin
3. ft_strtrim
4. ft_split
5. ft_itoa
6. ft_strmapi
7. ft_putchar_fd
8. ft_putstr_fd
9. ft_putendl_fd
10. ft_putnbr_fd

3. Part Three - Bonus part

1. ft_lstnew
2. ft_lstadd_front
3. ft_lstsize
4. ft_lstlast
5. ft_lstadd_back
6. ft_lstdelone
7. ft_lstclear
8. ft_lstiter
9. ft_lstmap

Cheatsheet

1. Part One - Libc functions

#	Function	Description	Prototype
1	ft_atoi	Converts the initial portion of the string pointed to by 'str' to int.	int ft_atoi(const char *str)
2	ft_bzero	Erases the data in the n bytes of the memory starting at the location pointed to by 's', by writing zeros (bytes containing '\0') to that area.	void ft_bzero(void *s, size_t n)
3	ft_calloc	Allocates size bytes and returns a pointer to the allocated memory. The memory is not initialized.	void *ft_calloc(size_t nmemb, size_t size)
4	ft_isalnum	Checks for an alphanumeric character	int ft_isalnum(int c)
5	ft_isalpha	Checks for an alphabetic character	int ft_isalpha(int c)
6	ft_isascii	Checks whether 'c' is a 7-bit unsigned char value that fits into the ASCII character set.	int ft_isascii(int c)
7	ft_isdigit	Checks for a digit (0 through 9).	int ft_isdigit(int c)
8	ft_isprint	Checks for any printable character including space.	int ft_isprint(int c)
9	ft_memset	Fills the first 'n' bytes of the memory area pointed to by 's' with the constant byte 'c'.	void *ft_memset(void *s, int c, size_t n)
10	ft_memcpy	Copies 'n' bytes from memory area 'src' to memory area dest. The memory areas must not overlap.	void *ft_memcpy(void *dest, const void *src, size_t n)
11	ft_memccpy	Copies no more than 'n' bytes from memory area 'src' to memory area 'dest', stopping when the character 'c' is found.	void *memccpy(void *dest, const void *src, int c, size_t n)
12	ft_memmove	Copies 'n' bytes from memory area 'src' to memory area 'dest'.	void *memmove(void *dest, const void *src, size_t n)
13	ft_memchr	Scans the initial 'n' bytes of the memory area pointed to by 's' for the first instance of 'c'. Both 'c' and the bytes of the memory area pointed to by 's' are interpreted as unsigned char.	void *memchr(const void *s, int c, size_t n)
14	ft_memcmp	Compares the first 'n' bytes (each interpreted as unsigned char) of the memory areas 's1' and 's2'.	int memcmp(const void *s1, const void *s2, size_t n)
15	ft_strchr	Returns a pointer to the first occurrence of the character 'c' in the string 's'.	char *strchr(const char *s, int c)
16	ft_strlcat	Concatenate strings	size_t strlcat(char *dst, const char *src, size_t size)
17	ft_strlcpy	Copy strings	size_t strlcpy(char *dst, const char *src, size_t size)
18	ft_strlen	Calculates the length of the string pointed to by 's', excluding the terminating null byte ('\0').	size_t strlen(const char *s)
19	ft_strncmp	Compares the two strings 's1' and 's2'. It returns an integer less than, equal to, or greater than zero if 's1' is found, respectively, to be less than, to match, or be greater than 's2'.	int strcmp(const char *s1, const char *s2)
20	ft_strnstr	Locates the first occurrence of the null-terminated string 'needle' in the string 'haystack', where not more than len characters are searched. Characters that appear after a ‘\0’ character are not searched.	char *ft_strnstr(const char *haystack, const char *needle, size_t len)
21	ft_strrchr	returns a pointer to the last occurrence of the character 'c' in the string 's'.	char *ft_strrchr(const char *s, int c)
22	ft_strdup	returns a pointer to a new string which is a duplicate of the string 's'.	char *ft_strdup(char *src)
23	ft_tolower	convert uppercase letters to lowercase	int ft_tolower(int c)
24	ft_toupper	convert lowercase letters to uppercase	int ft_toupper(int c)

2. Part Two - Additional functions

#	Function	Description	Prototype
1	ft_substr	Allocates memory and returns a substring from the string ’s’.The substring begins at index ’start’ and is of maximum size ’len’.	char *ft_substr(char const *s, unsigned int start, size_t len)
2	ft_strjoin	Allocates memory and returns a new string, which is the result of the concatenation of ’s1’ and ’s2’.	char *ft_strjoin(char const *s1, char const *s2)
3	ft_strtrim	Allocates (with malloc(3)) and returns a copy of ’s1’ with the characters specified in ’set’ removed from the beginning and the end of the string.	char *ft_strtrim(char const *s1, char const *set)
4	ft_split	Allocates (with malloc(3)) and returns an array of strings obtained by splitting ’s’ using the character ’c’ as a delimiter. The array must be ended by a NULL pointer.	char **ft_split(char const *s, char c)
5	ft_itoa	Allocates (with malloc(3)) and returns a string representing the integer received as an argument. Negative numbers must be handled.	char *ft_itoa(int n)
6	ft_strmapi	Applies the function ’f’ to each character of the string ’s’ to create a new string (with malloc(3)) resulting from successive applications of ’f’.	char *ft_strmapi(char const *s, char (*f)(unsigned int, char))
7	ft_putchar_fd	Outputs the character ’c’ to the given file descriptor	void ft_putchar_fd(char c, int fd)
8	ft_putstr_fd	Outputs the string ’s’ to the given file descriptor.	void ft_putstr_fd(char *s, int fd)
9	ft_putendl_fd	Outputs the string ’s’ to the given file descriptor, followed by a newline.	void ft_putendl_fd(char *s, int fd)
10	ft_putnbr_fd	Outputs the integer ’n’ to the given file descriptor.	void ft_putnbr_fd(int n, int fd)

3. Part Three - Bonus part

#	Function	Description	Prototype
1	ft_lstnew	Allocates (with malloc(3)) and returns a new element. The variable ’content’ is initialized with the value of the parameter ’content’. The variable ’next’ is initialized to NULL.	t_list *ft_lstnew(void *content)
2	ft_lstadd_front	Adds the element ’new’ at the beginning of the list	void ft_lstadd_front(t_list **lst, t_list *new)
3	ft_lstsize	Counts the number of elements in a list.	int ft_lstsize(t_list *lst)
4	ft_lstlast	Returns the last element of the list.	t_list *ft_lstlast(t_list *lst)
5	ft_lstadd_back	Adds the element ’new’ at the end of the list.	void ft_lstadd_back(t_list **lst, t_list *new)
6	ft_lstdelone	Takes as a parameter an element and frees the memory of the element’s content using the function ’del’ given as a parameter and free the element. The memory of ’next’ must not be freed.	void ft_lstdelone(t_list *lst, void (del)(void))
7	ft_lstclear	Deletes and frees the given element and every successor of that element, using the function ’del’ and free(3). Finally, the pointer to the list must be set to NULL.	void ft_lstclear(t_list **lst, void (del)(void))
8	ft_lstiter	Iterates the list ’lst’ and applies the function ’f’ to the content of each element.	void ft_lstiter(t_list *lst, void (*f)(void *))
9	ft_lstmap	Iterates the list ’lst’ and applies the function ’f’ to the content of each element. Creates a new list resulting of the successive applications of the function ’f’. The ’del’ function is used to delete the content of an element if needed.	t_list *ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *))