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base c lib without external lib

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This commit is contained in:
David Gailleton
2025-11-05 19:25:22 +01:00
parent e06b98052a
commit 697e044d7e
19 changed files with 445 additions and 13 deletions
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36
Makefile
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@@ -4,15 +4,37 @@ AR = ar
ARFLAGS = rc ARFLAGS = rc
CFLAGS = -Wall -Wextra -Werror -I libft.h HEADER = libft.h
CFLAGS = -Wall -Wextra -Werror
NAME = libft.a NAME = libft.a
SRC = ft_isalpha.c ft_isdigit.c ft_isalnum.c ft_isascii.c SRC = ft_isalpha.c \
ft_isdigit.c \
ft_isalnum.c \
ft_isascii.c \
ft_isprint.c \
ft_strlen.c \
ft_memset.c \
ft_bzero.c \
ft_memcpy.c \
ft_memmove.c \
ft_strlcpy.c \
ft_strlcat.c \
ft_toupper.c \
ft_tolower.c \
ft_strchr.c \
ft_strrchr.c \
ft_strncmp.c \
ft_memcpy.c \
ft_memchr.c \
ft_strnstr.c \
ft_atoi.c
OBJDIR = objs OBJ_DIR = objs
OBJ = $(patsubst %, $(OBJDIR)/%o, $(SRC:.c=.)) OBJ = $(patsubst %, $(OBJ_DIR)/%o, $(SRC:.c=.))
all: $(NAME) all: $(NAME)
@@ -21,10 +43,10 @@ $(NAME): $(OBJ)
$(AR) $(ARFLAGS) $(NAME) $(OBJ) $(AR) $(ARFLAGS) $(NAME) $(OBJ)
ranlib $(NAME) ranlib $(NAME)
$(OBJDIR)/%.o: %.c | $(OBJDIR) $(OBJ_DIR)/%.o: %.c | $(OBJ_DIR)
$(CC) -o $@ -c $< $(CFLAGS) $(CC) -o $@ -c $< $(CFLAGS) -I$(HEADER)
$(OBJDIR): $(OBJ_DIR):
mkdir $@ mkdir $@
clean: clean:

29
ft_atoi.c Normal file
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@@ -0,0 +1,29 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 19:07:51 by dgaillet #+# #+# */
/* Updated: 2025/11/05 19:17:34 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
int ft_atoi(const char *nptr)
{
int i;
int res;
i = 0;
res = 0;
if (!nptr[0])
return (0);
if (nptr[0] == '-' && ft_isdigit(nptr[1]))
return (-1 * ft_atoi(nptr + 1));
while (ft_isdigit(nptr[i++]))
res = (10 * res) + (nptr[i] - '0');
return (res);
}

21
ft_bzero.c Normal file
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@@ -0,0 +1,21 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_bzero.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 11:41:08 by dgaillet #+# #+# */
/* Updated: 2025/11/05 11:44:03 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
void ft_bzero(void *s, size_t n)
{
if (n <= 0)
return ;
*((char *) s) = '\0';
ft_bzero(s + 1, n - 1);
}

18
ft_isprint.c Normal file
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@@ -0,0 +1,18 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_isprint.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 11:14:13 by dgaillet #+# #+# */
/* Updated: 2025/11/05 11:16:46 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
int ft_isprint(int c)
{
if ((c >= 40 && c <= 126) || (c >= 7 && c <= 13))
return (1);
return (0);
}

22
ft_memchr.c Normal file
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@@ -0,0 +1,22 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memchr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 17:54:17 by dgaillet #+# #+# */
/* Updated: 2025/11/05 17:59:54 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
void *ft_memchr(const void *s, int c, size_t n)
{
if (n > 0 && *((unsigned char *) s) == c)
return ((void *) s);
if (n <= 0)
return (NULL);
return (ft_memchr(s + 1, c, n - 1));
}

22
ft_memcmp.c Normal file
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@@ -0,0 +1,22 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memcmp.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 18:00:38 by dgaillet #+# #+# */
/* Updated: 2025/11/05 18:05:28 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
int ft_memcmp(const void *s1, const void *s2, size_t n)
{
if (n <= 0)
return (0);
if (*((unsigned char *) s1) != *((unsigned char *) s2))
return (*((unsigned char *) s1) - *((unsigned char *) s2));
return (ft_memcmp(s1 + 1, s2 + 1, n - 1));
}

22
ft_memcpy.c Normal file
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@@ -0,0 +1,22 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memcpy.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 11:46:16 by dgaillet #+# #+# */
/* Updated: 2025/11/05 17:02:06 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
void *ft_memcpy(void *dest, const void *src, size_t n)
{
if (n <= 0)
return (dest);
*((unsigned char *) dest) = *((unsigned char *) src);
ft_memcpy(dest + 1, src + 1, n - 1);
return (dest);
}

33
ft_memmove.c Normal file
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@@ -0,0 +1,33 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memmove.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 13:17:42 by dgaillet #+# #+# */
/* Updated: 2025/11/05 13:27:43 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
void *ft_rev_memcpy(void *dest, const void *src, size_t n)
{
if (n <= 0)
{
return (dest);
}
*((char *) dest) = *((char *) src);
ft_memcpy(dest - 1, src - 1, n - 1);
return (dest);
}
void *ft_memmove(void *dest, const void *src, size_t n)
{
if (dest < src)
ft_memcpy(dest, src, n);
else
ft_rev_memcpy(dest + n, src + n, n);
return (dest);
}

22
ft_memset.c Normal file
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@@ -0,0 +1,22 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memset.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 11:20:47 by dgaillet #+# #+# */
/* Updated: 2025/11/05 11:44:56 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
void *ft_memset(void *s, int c, size_t n)
{
if (n <= 0)
return (s);
*((char *) s) = c;
ft_memset(s + 1, c, n - 1);
return (s);
}

20
ft_strchr.c Normal file
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@@ -0,0 +1,20 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strchr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 17:24:37 by dgaillet #+# #+# */
/* Updated: 2025/11/05 17:38:39 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
char *ft_strchr(const char *s, int c)
{
if (*s == c)
return ((char *) s);
if (!(*s))
return (0);
return (ft_strchr(s + 1, c));
}

26
ft_strlcat.c Normal file
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@@ -0,0 +1,26 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strlcat.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 17:11:43 by dgaillet #+# #+# */
/* Updated: 2025/11/05 17:19:16 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
size_t ft_strlcpy(char *dst, const char *src, size_t size)
{
size_t i;
size_t j;
i = 0;
j = ft_strlen(dst);
while (i < (size - 1) && src[i++])
dst[i + j] = src[i];
dst[i + j] = '\0';
return (j + ft_strlen(dst));
}

24
ft_strlcpy.c Normal file
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@@ -0,0 +1,24 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strlcpy.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 13:31:13 by dgaillet #+# #+# */
/* Updated: 2025/11/05 17:10:52 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
size_t ft_strlcpy(char *dst, const char *src, size_t size)
{
size_t i;
i = 0;
while (src[i++] && size > (i - 1))
dst[i] = src[i];
dst[i] = '\0';
return (ft_strlen(src));
}

20
ft_strlen.c Normal file
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@@ -0,0 +1,20 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strlen.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 11:17:31 by dgaillet #+# #+# */
/* Updated: 2025/11/05 11:20:00 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
size_t ft_strlen(const char *s)
{
if (!(*s))
return (0);
return (1 + ft_strlen(s + 1));
}

22
ft_strncmp.c Normal file
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@@ -0,0 +1,22 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strncmp.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 17:34:15 by dgaillet #+# #+# */
/* Updated: 2025/11/05 17:41:35 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
int ft_strncmp(const char *s1, const char *s2, size_t n)
{
if (n <= 0)
return (0);
if (*s1 != *s2)
return (*s1 - *s2);
return (ft_strncmp(s1 + 1, s2 + 1, n - 1));
}

31
ft_strnstr.c Normal file
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@@ -0,0 +1,31 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* strnstr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 18:05:52 by dgaillet #+# #+# */
/* Updated: 2025/11/05 19:07:15 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
char *ft_strnstr(const char *big, const char *little, size_t len)
{
size_t little_len;
size_t i;
i = 0;
little_len = ft_strlen(little);
if (!little[0])
return ((char *) big);
while ((len - i) < little_len)
{
if (!ft_strncmp(&big[i], little, little_len))
return ((char *) &big[i]);
i++;
}
return (NULL);
}

27
ft_strrchr.c Normal file
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@@ -0,0 +1,27 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strrchr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 17:28:39 by dgaillet #+# #+# */
/* Updated: 2025/11/05 17:33:38 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
char *ft_strrchr(const char *s, int c)
{
int i;
i = 0;
while (s[i])
i++;
while (i >= 0)
{
if (s[i] == c)
return ((char *) &s[i]);
i++;
}
return (0);
}

18
ft_tolower.c Normal file
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@@ -0,0 +1,18 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_tolower.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 17:23:29 by dgaillet #+# #+# */
/* Updated: 2025/11/05 17:24:21 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
int ft_tolower(int c)
{
if (c >= 'A' && c <= 'Z')
return (c + 32);
return (c);
}

18
ft_toupper.c Normal file
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@@ -0,0 +1,18 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_toupper.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 17:20:43 by dgaillet #+# #+# */
/* Updated: 2025/11/05 17:23:02 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
int ft_toupper(int c)
{
if (c >= 'a' && c <= 'z')
return (c - 32);
return (c);
}

17
libft.h
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@@ -6,7 +6,7 @@
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */ /* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2025/11/05 09:49:43 by dgaillet #+# #+# */ /* Created: 2025/11/05 09:49:43 by dgaillet #+# #+# */
/* Updated: 2025/11/05 10:55:45 by dgaillet ### ########lyon.fr */ /* Updated: 2025/11/05 19:06:38 by dgaillet ### ########lyon.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@@ -19,5 +19,20 @@ int ft_isalpha(int c);
int ft_isdigit(int c); int ft_isdigit(int c);
int ft_isalnum(int c); int ft_isalnum(int c);
int ft_isascii(int c); int ft_isascii(int c);
int ft_isprint(int c);
size_t ft_strlen(const char *s);
void *ft_memset(void *s, int c, size_t n);
void ft_bzero(void *s, size_t n);
void *ft_memcpy(void *dest, const void *src, size_t n);
void *ft_memmove(void *dest, const void *src, size_t n);
size_t ft_strlcpy(char *dst, const char *src, size_t size);
size_t ft_strlcat(char *dst, const char *src, size_t size);
int ft_toupper(int c);
int ft_tolower(int c);
char *ft_strchr(const char *s, int c);
char *ft_strrchr(const char *s, int c);
int ft_strncmp(const char *s1, const char *s2, size_t n);
int ft_memcmp(const void *s1, const void *s2, size_t n);
void *ft_memchr(const void *s, int c, size_t n);
#endif #endif