input.c File Reference

Key input reading (decodes escape sequences & arrow keys) More...

#include "minishell_ui.h"

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Detailed Description

Key input reading (decodes escape sequences & arrow keys)

Definition in file input.c.

Functions
int	read_key (void)
	Read 1 keypress or escape sequence from STDIN. More...
void	cmd_add_char (t_cmd *cmd, char c)
	Append a printable character to the command buffer. More...
void	cmd_del_char (t_cmd *cmd)
	Remove the last character from the command buffer. More...
static void	handle_scroll (t_ui *ui, int key)
	Adjust the scroll offset and refresh the output panel. More...
void	handle_key (t_shell *shell, int key)
	Dispatch key code to the appropriate UI action. More...

Function Documentation

read_key()

int read_key

(

void

)

Read 1 keypress or escape sequence from STDIN.

Returns

int Key code as defined by the KEY_ constants or -1 on error

Definition at line 20 of file input.c.

References KEY_DOWN, KEY_ESC, KEY_LEFT, KEY_RIGHT, and KEY_UP.

Referenced by ui_loop().

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cmd_add_char()

void cmd_add_char	(	t_cmd *	cmd,
		char	c
	)

Append a printable character to the command buffer.

Does nothing if the buffer could cause an overflow on MAX_CMD_LEN

Parameters

cmd	Command buffer
c	Character to append

Definition at line 57 of file input.c.

References t_cmd::buf, t_cmd::len, and MAX_CMD_LEN.

Referenced by handle_key().

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cmd_del_char()

void cmd_del_char

(

t_cmd *

cmd

)

Remove the last character from the command buffer.

Does nothing if the buffer is empty

Parameters

cmd	Command buffer

Definition at line 74 of file input.c.

References t_cmd::buf, and t_cmd::len.

Referenced by handle_key().

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handle_scroll()

static void handle_scroll ( t_ui *  ui, int  key  )

static

Adjust the scroll offset and refresh the output panel.

• KEY_UP decrements scroll (starting from 0)
• KEY_DOWN increments scrolls (up to count - 10)

Parameters

ui	UI state
key	KEY_UP or KEY_DOWN

Definition at line 92 of file input.c.

References t_out::count, KEY_DOWN, KEY_UP, t_ui::out, redraw_output_only(), and t_out::scroll.

Referenced by handle_key().

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handle_key()

void handle_key	(	t_shell *	shell,
		int	key
	)

Dispatch key code to the appropriate UI action.

• KEY_ENTER: cmd_execute()
• KEY_BACKSPACE: cmd_del_char()
• KEY_CTRL_D: stop loop
• KEY_CTRL_C: clear the command buffer
• KEY_UP / KEY_DOWN: handle_scroll()
• And for printable ASCII, cmd_add_char()

Parameters

shell
key

Definition at line 119 of file input.c.

References t_cmd::buf, t_ui::cmd, cmd_add_char(), cmd_del_char(), cmd_execute(), handle_scroll(), KEY_BACKSPACE, KEY_CTRL_C, KEY_CTRL_D, KEY_DOWN, KEY_ENTER, KEY_UP, t_cmd::len, MAX_CMD_LEN, t_ui::running, and t_shell::ui.

Referenced by ui_loop().

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