162 lines
3.6 KiB
C
162 lines
3.6 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* main.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: gbaconni@student.42lausanne.ch +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/04/13 06:58:46 by gbaconni #+# #+# */
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/* Updated: 2022/04/29 15:14:41 by gbaconni ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include <stdio.h> // printf
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#include <string.h> // strlen
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#include <ctype.h> // isdigit
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#include <assert.h> // assert
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#include "libftprintf/libftprintf.h"
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int ft_skipchars(const char *s, char *chars)
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{
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int ret;
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int i;
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int hits;
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ret = 0;
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while (*s != '\0')
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{
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i = 0;
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hits = 0;
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while (chars[i] != '\0')
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hits += (chars[i++] == *s);
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if (hits > 0)
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ret++;
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else
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break ;
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s++;
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}
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return (ret);
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}
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char *ft_fmtsplit(char **fmt)
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{
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char *format;
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char *start;
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char *end;
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int len;
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format = NULL;
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start = *fmt;
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end = *fmt;
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if (start == NULL)
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return (NULL);
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if (*end == '%')
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if (*end++ == '%')
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end++;
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while (*end != '\0' && *end != '%')
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end++;
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len = end - start;
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format = (char *) calloc(len + 1, sizeof(char));
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if (format == NULL)
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return (NULL);
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strncpy(format, start, len);
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if (*end == '\0')
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*fmt = NULL;
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else
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*fmt += len;
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return (format);
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}
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int _printf(int (*f)(const char *restrict, ...), \
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char *format, char *arg)
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{
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int ret;
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char c;
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ret = 0;
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if (arg == NULL)
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return (ret);
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c = *(format + 1 + ft_skipchars(format + 1, "0123456789# +"));
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if (c == 'c')
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ret = (*f)(format, *arg);
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else if (c == 's')
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ret = (*f)(format, arg);
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else if (c == 'p')
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ret = (*f)(format, (arg)? &arg: NULL);
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else if (c == 'x' || c == 'X')
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ret = (*f)(format, atol(arg));
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else if (c == 'd' || c == 'i' || c == 'u')
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ret = (*f)(format, atoi(arg));
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else
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ret = (*f)(format);
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return (ret);
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}
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int _sprintf(int (*f)(const char *restrict, ...), \
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char *str, char *format, char *arg)
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{
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int ret;
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char c;
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int fd[3];
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ret = 0;
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setbuf(stdout, NULL);
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pipe(fd);
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fd[2] = dup(STDOUT_FILENO);
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dup2(fd[1], STDOUT_FILENO);
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ret = _printf((*f), format, arg);
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dup2(fd[2], STDOUT_FILENO);
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fflush(stdout);
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close(fd[1]);
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while (read(fd[0], &c, 1) > 0)
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*str++ = c;
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*str = '\0';
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close(fd[0]);
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return (ret);
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}
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int assert_printf(char *format, char *arg)
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{
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int ret;
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int ft_ret;
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char out[256];
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char ft_out[256];
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if (arg == NULL || strcmp(arg, "") == 0)
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arg = NULL;
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ret = _sprintf(printf, out, format, arg);
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printf("%d = printf(\"%s\", '%s')\n%s\n", ret, format, arg, out);
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ft_ret = _sprintf(ft_printf, ft_out, format, arg);
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printf("%d = ft_printf(\"%s\", '%s')\n%s\n\n", ft_ret, format, arg, ft_out);
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assert(ret == ft_ret);
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assert(strcmp(out, ft_out) == 0);
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return (!(ret == ft_ret));
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}
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int main(int args, char *argv[])
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{
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int ret;
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char *fmt;
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char *format;
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char *arg;
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ret = 0;
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argv++;
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if (--args < 1)
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return (127);
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fmt = *argv++;
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format = ft_fmtsplit(&fmt);
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while (format != NULL)
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{
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if (*format == '%' && *(format + 1) != '%' && --args)
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arg = *argv++;
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else
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arg = NULL;
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ret |= assert_printf(format, arg);
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free(format);
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format = ft_fmtsplit(&fmt);
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}
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return (ret);
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}
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