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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* p_subst_alias.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/14 17:19:27 by rbousset #+# #+# */
/* Updated: 2020/02/14 17:19:29 by rbousset ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include <libft.h>
#include <stddef.h>
#include "s_struct.h"
#include "u_alias.h"
#include "u_parse.h"
#include "u_utils.h"
#include "u_vars.h"
static char *p_skip_whitespace(char *ptr)
{
while (*ptr != C_NUL && ft_iswhitespace(*ptr))
{
ptr++;
}
return (ptr);
}
static t_bool p_meet_whitespace(char *head, char *ptr, t_quote_mode mode)
{
if (mode == Q_NONE && u_is_not_escaped(head, ptr) == TRUE)
{
return (TRUE);
}
return (FALSE);
}
static char *p_set_ptr(char *ptr, char word[], t_bool *good, size_t locat[])
{
t_quote_mode mode;
mode = Q_NONE;
while (*ptr != C_NUL)
{
if (*ptr == C_DQUOTE)
mode = u_meet_dquote(word, ptr, mode);
if (*ptr == C_SQUOTE)
mode = u_meet_squote(word, ptr, mode);
if (mode == Q_NONE && *ptr == C_EQUALS)
*good = FALSE;
if (ft_iswhitespace(*ptr) == TRUE
&& p_meet_whitespace((char*)word, ptr, mode) == TRUE)
{
locat[1] = (ptr - word);
if (*good == TRUE)
break ;
else
{
ptr = p_skip_whitespace(ptr);
locat[0] = (ptr - word);
ptr -= 1;
*good = TRUE;
}
}
ptr++;
}
return (ptr);
}
size_t p_subst_alias(char word[], t_bool reset, t_msh *msh)
{
static size_t used[4096];
static size_t i = 0;
char value[ARG_MAX];
char tmp[255];
size_t locat[2];
size_t j;
size_t usedcmp;
char *ptr;
t_bool good;
if (reset == TRUE)
{
i = 0;
while (i < 4096)
{
used[i] = 0;
i++;
}
i = 0;
}
ptr = word;
ptr = p_skip_whitespace(ptr);
good = TRUE;
locat[0] = (ptr - word);
locat[1] = (ptr - word);
ptr = p_set_ptr(ptr, word, &good, locat);
if (*ptr == C_NUL && good == TRUE)
locat[1] = (ptr - word);
if (good == TRUE)
{
ft_strlcpy(tmp,
word + locat[0],
((locat[1] - locat[0] < 253) ? (locat[1] - locat[0]) : (254)) + 1);
if ((usedcmp = u_get_alias_value(value, tmp, ARG_MAX, msh)) != 0)
{
j = 0;
good = TRUE;
while (j < i)
{
if (used[j] == usedcmp)
good = FALSE;
j++;
}
if (good == TRUE)
{
(void)ft_memmove(word + (locat[0] + ft_strlen(value)),
word + locat[1],
ft_strlen(word + locat[1]) + 1 * sizeof(char));
(void)ft_memmove(word + locat[0],
value,
ft_strlen(value) * sizeof(char));
used[i] = usedcmp;
i++;
return (usedcmp);
}
}
}
return (0);
}
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