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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* p_lblock_next.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 <stdlib.h>
#include <stdint.h>
#include <limits.h>
#include "d_define.h"
#include "s_destroy.h"
#include "f_fail.h"
#include "p_lblock_more.h"
#include "s_struct.h"
#include "u_alias.h"
#include "u_parse.h"
#include "u_utils.h"
#include "u_vars.h"
#include "u_vars_next.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, int64_t 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++;
}
}
static char **p_alloc_rewords(char *words[], int64_t j, t_msh *msh)
{
char **rewords;
if ((rewords = (char**)malloc((j + 1) * sizeof(char*))) == NULL)
{
ft_delwords(words);
f_alloc_and_destroy_msh(msh);
}
return (rewords);
}
static char **p_add_to_variables_and_delete(char *words[],
t_bool reg,
int64_t i,
t_msh *msh)
{
char **rewords;
int64_t j;
int64_t k;
j = -1;
while (reg == TRUE && words[++j] != NULL && j < i)
p_register_word(words[j], msh);
j = 0;
while (words[i + j] != NULL)
j++;
rewords = p_alloc_rewords(words, j, msh);
k = i;
while (i - k < j)
{
if ((rewords[i - k] = ft_strdup(words[i])) == NULL)
{
ft_delwords(words);
f_alloc_and_destroy_msh(msh);
}
i++;
}
rewords[i - k] = 0;
ft_delwords(words);
i++;
return (rewords);
}
static void p_add_to_env_fork(int64_t i, char *words[], t_msh *msh)
{
int64_t j;
j = 0;
while(j < i)
{
ft_strlcpy(msh->env_fork_tmp[j], words[j], ft_strlen(words[j]) + 1);
j++;
}
msh->env_fork_tmp[j][0] = '\0';
}
static char *p_set_ptr(char *words[], int64_t i, t_bool *reg, t_bool *isvar)
{
char *ptr;
ptr = words[i];
while (*ptr != '\0' && *ptr != '=')
ptr++;
*reg = (*ptr == '=') ? (TRUE) : (*reg);
*isvar = (*ptr == '=') ? (TRUE) : (*isvar);
return (ptr);
}
char **p_check_args_equals(char *words[], t_msh *msh)
{
char *ptr;
int64_t i;
t_bool reg;
t_bool isvar;
reg = FALSE;
isvar = FALSE;
i = -1;
while (words[++i] != NULL)
{
ptr = p_set_ptr(words, i, ®, &isvar);
if (*ptr == C_NUL || words[i][0] == '=' || ft_isdigit(words[i][0]))
{
reg = FALSE;
isvar = (i == 0) ? (FALSE) : (isvar);
if (isvar == TRUE)
p_add_to_env_fork(i, words, msh);
else
msh->env_fork_tmp[0][0] = C_NUL;
break ;
}
}
if (isvar == TRUE)
return (p_add_to_variables_and_delete(words, reg, i, msh));
return (words);
}
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