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normed most of the line lib

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Maieul BOYER 2024-07-11 18:35:56 +02:00
parent 2cfce88274
commit 79e039c94a
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12 changed files with 751 additions and 597 deletions
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line/src/line_editing.c Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* line_editing.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/07/11 18:21:45 by maiboyer #+# #+# */
/* Updated: 2024/07/11 18:28:19 by maiboyer ### ########.fr */
/* */
/* ************************************************************************** */
#include "line/_line_functions.h"
#include "line/_line_internal.h"
#include "line/_line_structs.h"
#include "me/printf/printf.h"
/* =========================== Line editing ================================= */
/* We define a very simple "append buffer" structure, that is an heap
* allocated string where we can append to. This is useful in order to
* write all the escape sequences in a buffer and flush them to the standard
* output in a single call, to avoid flickering effects. */
static void _modify_vars(t_usize *a, t_usize *b, bool operation)
{
if (!operation)
{
*a = 0;
*b = 0;
}
else
{
*a += 1;
*b += 1;
}
}
t_usize line_get_prompt_len(t_const_str s)
{
t_usize i;
t_usize ret;
t_isize color;
if ((_modify_vars(&i, &ret, false), true) && s == NULL)
return (0);
while (s[i])
{
if (s[i] == '\x1b' && s[i++] == '[')
{
color = ((void)(i++), 0);
while (color >= 0)
{
while (((void)color--, true) && s[i] >= '0' && s[i] <= '9')
color += ((void)(i++), 2);
if (s[i] == ';')
i++;
else if (s[i] == 'm' && ((void)i++, true))
break ;
}
}
_modify_vars(&i, &ret, true);
}
return (ret);
}
/* Single line low level line refresh.
*
* Rewrite the currently edited line accordingly to the buffer content,
* cursor position, and number of columns of the terminal.
*
* Flags is REFRESH_* macros. The function can just remove the old
* prompt, just write it, or both. */
void line_refresh(t_line_state *state, t_line_flags flags)
{
t_string str;
str = string_new(64);
string_push(&str, "\r\x1b[2K");
if (flags & REFRESH_WRITE)
me_printf_str(&str, "%s%s\x1b[0G\x1b[%uC", state->prompt,
state->buf.buf, state->pos + line_get_prompt_len(state->prompt));
me_printf_fd(state->output_fd, "%s", str.buf);
string_free(str);
}