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function printf a la norme

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This commit is contained in:
Hugo LAMY
2020-02-27 12:02:33 +01:00
parent c82a18587a
commit c1a6c0c5ed
6 changed files with 141 additions and 176 deletions
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3
Makefile
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@@ -16,9 +16,8 @@ LIBS = $(_LIBS:lib%.a=%)
SRCS = ft_printf.c \
ft_next_word.c \
aside.c \
ft_convert.c \
ft_width_n_precision.c \
ft_flag_transform.c \
main.c
ODIR = ./builds

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ft_printf
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183
ft_printf.c
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@@ -1,70 +1,131 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_printf.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: hulamy <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/27 12:01:26 by hulamy #+# #+# */
/* Updated: 2020/02/27 12:01:30 by hulamy ### ########.fr */
/* */
/* ************************************************************************** */
#include "ft_printf.h"
/*
** FT_FLAG_TRANSFORM :
** if i = flag_p(&s) | -precision is calculated before width,
** | on str, if < length(str), cuts it,
** print = ft_precision() | on nbr, if > length(nbr), add '0' before,
** | then add '-' if negatif
** | (if precision given with flag '0', it's
** | ignored and cuted from s)
** if i = flag_w(s) | -width is caculated
** if flag_-(&s) | -if flag '-', rm '-' and width from s
** print = ft_rpadd() | -put extra width as ' ' to right,
** else if flag_0(&s) | -if flag '0', rm '0' and width from s
** print = ft_lpadd() | -put extra width as '0' to left
** else | -if just width
** print = ft_lpadd() | put extra width as ' ' to left
** // if flag_+(s) |
** // else if flag_space(s) |
** // if flag_'(s) |
** // if flag_#(s) |
** // print = ft_altfrm() |
**
** int flag_p(char **s);
** char *ft_precision(int i, char *print);
** int flag_w(char *s);
** void flag_-(char **s);
** char *ft_rpadd(int i, char *print);
** char *ft_lpadd(int i, char *print, char c);
** SPECIFIER :
** receive a word as a string, check if it start by '%', and return the
** specifier (diuxXspefgn) and the length (h hh l ll)
** -if s is a string, or is a single '%'
** return NULL (to print is as a string)
** -if s is a double '%%', remove one '%', and
** return NULL (to print is as a string)
** -then s is a conversion, go to the length and specifier
** -copy them in 'string'
** -and remove them from s
** -return the length and specifier in a string
*/
char *ft_flag_transform(char *s, char *print, char *type)
char *specifier(char *s)
{
print = ft_precision(s, print, type);
print = ft_width(s, print);
char *string;
int i;
// if (flag_+(s)) //
// else if (flag_space(s)) //
// if (flag_'(s)) //
// if (flag_#(s)) //
// print = ft_alternate_form(print) //
return (print);
if (s[0] != '%' || s[1] == '\0')
return (NULL);
if (s[1] == '%')
{
s[1] = '\0';
return (NULL);
}
i = 1;
while (ft_strchr("#0- +'0123456789.*", s[i]) != NULL)
i++;
string = ft_strdup(s + i);
while (s[i] != '\0')
{
s[i] = '\0';
i++;
}
return (string);
}
/*
** FT_PRINTF :
** va_list ap;
** int length;
** char *print; | -contain the arg converted into a string
** char *type; | -contain the specifier type to use
** | by va_arg
** while s = next_word() | -return the next sequence to be print
** | (either a string, or a conversion)
** type = specifier(s) | -return the type if it's a conversion, or "%",
** | or NULL if it's a string. if it's a
** | single '%' it's considered as a string
** | if convers0, rmvs length & specifier from s
** if !type: ft_put_word() | -print the string if it wasn't a conversion
** else | or if it was a '%%'
** while strchr(s,*) | -for each * present, expand it into s in
** ft_expand_star()| order it appears
** print = ft_convert()| -convert the arg with its type,
** | then trsfm it into a str and rtrn the str
** ft_flag_transform() | -proceed all modification according to flags
** ft_put_word(print) | -print the string fully converted
** return (length) | -return the length of what was printed
** -receive 'i' the number in which '*' will expand
** -turn it into a string
** -calculate the total lentgh of the string '%...' for nbr replacing '*'
** -allocate a new string with this length
** -copy the original str with first '*' expanded into it's corresponding nbr
*/
int ft_expand_star(int nbr, char **string)
{
char *s;
char *n;
int i;
int j;
int k;
n = ft_itoa(nbr);
if (!(s = ft_memalloc(sizeof(char) * (ft_strlen(n) + ft_strlen(*string)))))
return (0);
i = -1;
j = 0;
k = 0;
while ((*string)[++i] != '\0')
{
s[j] = (*string)[i];
if (s[j] == '*')
while (n[k] != '\0')
s[j++] = n[k++];
else
j++;
}
free(n);
free(*string);
*string = s;
return (1);
}
/*
** print the string
** because of lake of space, it also free 'type'
*/
int ft_put_word(char *s, char *type)
{
int i;
free(type);
i = ft_strlen(s);
ft_putstr(s);
free(s);
return (i);
}
/*
** print the string
** because of lake of space, it also free 'type'
*/
int length_n_free(int length, char *s)
{
free(s);
return (length);
}
/*
** -printf receive a string to print with a variadic number of arguments
** -it will go in a loop through each 'words'
** -a word is either a string containing no '%' or a conversion starting by '%'
** -if it's a string it's printed right away
** -if it's a conversion it will go through some actions :
** -1 expand all the stars from width and .precision
** they always expand into int type
** it's done first because those are the first next args on the va_list
** -2 expand the specifier according to its type and its length
** and put in a string 'print'
** -3 transform 'print' according to the flags
*/
int ft_printf(char *string, ...)
@@ -80,7 +141,7 @@ int ft_printf(char *string, ...)
while ((s = next_word(&string)) != NULL)
{
if ((type = specifier(s)) == NULL)
length += ft_put_word(s);
length += ft_put_word(s, type);
else
{
while (ft_strchr(s, '*'))
@@ -90,12 +151,8 @@ int ft_printf(char *string, ...)
return (-1);
if (!(print = ft_flag_transform(s, print, type)))
return (-1);
length += ft_put_word(print);
free(print);
length += ft_put_word(print, type);
}
free(s);
free(type);
}
free(s);
return (length);
return (length_n_free(length, s));
}

13
ft_printf.h
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@@ -8,7 +8,10 @@
# include <stdio.h>
// ft_printf.c
char *ft_flag_transform(char *s, char *print, char *type);
char *specifier(char *s);
int ft_expand_star(int nbr, char **string);
int ft_put_word(char *s, char *type);
int length_n_free(int length, char *s);
int ft_printf(char *string, ...);
// ft_next_word.c
@@ -16,20 +19,16 @@ int width_precision(char *s);
int word_length(char *s);
char *next_word(char **s);
// aside.c
char *specifier(char *s);
int ft_put_word(char *s);
int ft_expand_star(int nbr, char **string);
// ft_convert.c
char *conv_i(char c, long int i);
char *conv_u(char c, unsigned long int i);
char *ft_convert(va_list ap, char *type);
// ft_width_n_precision.c
// ft_flag_transform.c
char *precision_int(char *print, int precision);
char *ft_precision(char *s, char *print, char *type);
char *width_flags(char *print, char *tmp, char *s, int width);
char *ft_width(char *s, char *print);
char *ft_flag_transform(char *s, char *print, char *type);
#endif

101
srcs/aside.c
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@@ -1,101 +0,0 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* aside.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: hulamy <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/19 16:23:01 by hulamy #+# #+# */
/* Updated: 2020/02/26 17:43:21 by hulamy ### ########.fr */
/* */
/* ************************************************************************** */
#include "ft_printf.h"
/*
** SPECIFIER :
** receive a word as a string, check if it start by '%', and return the
** specifier (diuxXspefgn) and the length (h hh l ll)
** -if s is a string, or is a single '%'
** return NULL (to print is as a string)
** -if s is a double '%%', remove one '%', and
** return NULL (to print is as a string)
** -then s is a conversion, go to the length and specifier
** -copy them in 'string'
** -and remove them from s
** -return the length and specifier in a string
*/
char *specifier(char *s)
{
char *string;
int i;
if (s[0] != '%' || s[1] == '\0')
return (NULL);
if (s[1] == '%')
{
s[1] = '\0';
return (NULL);
}
i = 1;
while (ft_strchr("#0- +'0123456789.*", s[i]) != NULL)
i++;
string = ft_strdup(s + i);
while (s[i] != '\0')
{
s[i] = '\0';
i++;
}
return (string);
}
/*
** print the string
*/
int ft_put_word(char *s)
{
int i;
i = ft_strlen(s);
ft_putstr(s);
return (i);
}
/*
** -receive 'i' the number in which '*' will expand
** -turn it into a string
** -calculate the total lentgh of the string '%...' for nbr replacing '*'
** -allocate a new string with this length
** -copy the original str with first '*' expanded into it's corresponding nbr
*/
int ft_expand_star(int nbr, char **string)
{
char *s;
char *n;
int i;
int j;
int k;
n = ft_itoa(nbr);
if (!(s = ft_memalloc(sizeof(char) * (ft_strlen(n) + ft_strlen(*string)))))
return (0);
i = -1;
j = 0;
k = 0;
while ((*string)[++i] != '\0')
{
s[j] = (*string)[i];
if (s[j] == '*')
while (n[k] != '\0')
s[j++] = n[k++];
else
j++;
}
free(n);
free(*string);
*string = s;
return (1);
}

17
srcs/ft_width_n_precision.c → srcs/ft_flag_transform.c
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@@ -1,12 +1,12 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_width_n_precision.c :+: :+: :+: */
/* ft_flag_transform.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: hulamy <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/25 14:48:55 by hulamy #+# #+# */
/* Updated: 2020/02/26 19:24:18 by hulamy ### ########.fr */
/* Created: 2020/02/27 11:55:43 by hulamy #+# #+# */
/* Updated: 2020/02/27 11:55:45 by hulamy ### ########.fr */
/* */
/* ************************************************************************** */
@@ -154,3 +154,14 @@ char *ft_width(char *s, char *print)
return (print);
}
/*
** go through all the transformation flags needs
*/
char *ft_flag_transform(char *s, char *print, char *type)
{
print = ft_precision(s, print, type);
print = ft_width(s, print);
return (print);
}