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Added: Pipex as ressources, not most readable code tho...

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Maieul BOYER 2024-03-27 13:42:54 +01:00
parent 9482844642
commit 5d425048f2
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118
other/pipex/src/lib/string/inner/split_literals_escaped.c Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* split_literals_escaped.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/01/04 14:44:48 by maiboyer #+# #+# */
/* Updated: 2024/01/05 00:06:48 by maiboyer ### ########.fr */
/* */
/* ************************************************************************** */
#include "me/buffered_str/buf_str.h"
#include "me/char/isspace.h"
#include "me/char/tolower.h"
#include "me/string/inner/inner_split_literals.h"
#include "me/string/split_literals.h"
#include "me/vec/vec_str.h"
#include <stdio.h>
#include <stdlib.h>
static inline char escape_oct(t_const_str s, t_usize *current_index,
bool *did_escape, t_error *error)
{
char out;
char first;
first = s[*current_index];
out = first - '0';
(*current_index)++;
first = s[(*current_index)];
if (first >= '0' && first <= '7')
{
out = out * 8 + (first - '0');
(*current_index)++;
first = s[(*current_index)];
if (first >= '0' && first <= '7')
{
out = out * 8 + (first - '0');
(*current_index)++;
first = s[(*current_index)];
}
}
return (out);
}
static inline char escape_hex(t_const_str s, t_usize *current_index,
bool *did_escape, t_error *error)
{
char out;
char first;
out = 0;
first = me_tolower(s[++(*current_index)]);
if (first >= '0' && first <= '9')
out = first - '0';
else if (first >= 'a' && first <= 'f')
out = 10 + first - 'a';
else
{
(*current_index)--;
return ('\0');
}
first = me_tolower(s[++(*current_index)]);
if (first >= '0' && first <= '9')
out = out * 16 + first - '0';
else if (first >= 'a' && first <= 'f')
out = out * 16 + 10 + first - 'a';
return (out);
}
char unescape_single(char first)
{
if (first == '\\')
return ('\\');
if (first == 'a')
return ('\a');
if (first == 'b')
return ('\b');
if (first == 't')
return ('\t');
if (first == 'n')
return ('\n');
if (first == 'v')
return ('\v');
if (first == 'f')
return ('\f');
if (first == 'r')
return ('\r');
if (first == 'e')
return ('\e');
if (first == 'E')
return ('\e');
return ('\0');
}
char unescape(t_const_str s, t_usize *current_index, bool *did_escape,
t_error *error)
{
char first;
char out;
*did_escape = false;
if (s[(*current_index)] != '\\')
return (s[(*current_index)]);
(*current_index)++;
first = s[(*current_index)];
*did_escape = true;
if (unescape_single(first))
return (unescape_single(first));
if (first >= '0' && first <= '7')
return (escape_oct(s, current_index, did_escape, error));
if (first == 'x')
return (escape_hex(s, current_index, did_escape, error));
*did_escape = false;
(*current_index)--;
return ('\\');
}