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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* p_subst_vars.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 "d_define.h"
#include "s_struct.h"
#include "u_parse.h"
#include "u_utils.h"
#include "u_vars.h"
static char *p_double_them_bs(char varval[])
{
char *ptr;
ptr = varval;
while (*ptr != C_NUL)
{
if (*ptr == C_BACKS)
{
ptr = ft_memmove(ptr + 1, ptr, ft_strlen(ptr) + 1);
varval[ptr - varval] = C_BACKS;
}
ptr++;
}
return (varval);
}
static void p_subst_this_var(char **p, long i, char word[], t_msh *msh)
{
char tmp[ARG_MAX];
char varval[ARG_MAX];
char *ptr;
size_t varlen;
ptr = word;
varlen = i + 1;
while (ptr[varlen] != C_NUL &&
ft_ischarset("$=\\/@%^*+{}[]<>(),.-", ptr[varlen]) == FALSE
&& ft_iswhitespace(ptr[varlen]) == FALSE)
varlen += 1;
ft_strlcpy(tmp, ptr + i, varlen + 1 - i);
u_get_var_value(varval, tmp, ARG_MAX, msh);
p_double_them_bs(varval);
(void)ft_memmove(ptr + (i + ft_strlen(varval)),
ptr + varlen,
(ft_strlen(ptr + varlen) + 1) * sizeof(char));
(void)ft_memmove(word + i, varval, ft_strlen(varval) * sizeof(char));
*(p) = word + (i + ft_strlen(varval) - 1);
}
void p_subst_vars(char word[], t_msh *msh)
{
char *ptr;
t_quote_mode mode;
mode = Q_NONE;
ptr = word;
while (*ptr != C_NUL)
{
if (*ptr == C_DQUOTE)
mode = u_meet_dquote(word, ptr, mode);
else if (*ptr == C_SQUOTE)
mode = u_meet_squote(word, ptr, mode);
if ((mode == Q_NONE || mode == Q_DOUBLE) && *ptr == C_DOLLAR &&
u_is_not_escaped(word, ptr) == TRUE)
{
p_subst_this_var(&ptr, (ptr - word), word, msh);
}
ptr++;
}
}
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