Line editing support with history. More...

#include "readline.h"
#include <cfg/compiler.h>
#include <cfg/debug.h>
#include <stdio.h>

Defines
#define	DEBUG_DUMP_HISTORY 0
	Enable dump of the history after each line.
#define	IS_WORD_SEPARATOR(c) ((c) == ' ' \|\| (c) == '\0')
	Check if c is a separator between words.
Enumerations
enum	RL_KEYS
	Special keys (escape sequences converted to a single code)
Functions
void	rl_puts (const struct RLContext ctx, const char txt)
	Write the string txt to the IO output (without any kind of termination)
void	rl_putc (const struct RLContext *ctx, char ch)
	Write character ch to the IO output.
static bool	rl_getc (const struct RLContext ctx, int ch)
	Read a character from the IO into ch.
bool	is_history_begin (struct RLContext *ctx, int i)
	Check if index i points to the begin of the history.
bool	is_history_end (struct RLContext *ctx, int i)
	Check if index i points to the (exclusive) end of history.
bool	is_history_past_end (struct RLContext *ctx, int i)
	Check if index i points to the (exclusive) end of history, or somewhere past the end.
static bool	insert_chars (struct RLContext ctx, size_t curpos, const char *ch, int num_chars)
	Insert num_chars characters from ch into the history buffer at the position indicated by curpos.
static bool	insert_char (struct RLContext ctx, size_t curpos, char ch)
	Insert a single character ch into the buffer (with the same semantic of `insert_chars()`)
static bool	complete_word (struct RLContext ctx, size_t curpos)
	Complete the current word. Return false if no unambiguous completion was found.

Detailed Description

Line editing support with history.

Definition in file readline.c.

Define Documentation

#define IS_WORD_SEPARATOR ( c ) ((c) == ' ' || (c) == '\0')

Check if c is a separator between words.

Definition at line 104 of file readline.c.

Insert num_chars characters from ch into the history buffer at the position indicated by curpos.

If needed, remove old history to make room. Returns true if everything was successful, false if there was no room to add the characters.

Note:: num_chars can be 0, in which case we just make sure the line is correctly zero-terminated (ASCIIZ format).

Definition at line 239 of file readline.c.

Read a character from the IO into ch.

This function also takes care of converting the ANSI escape sequences into one of the codes defined in RL_KEYS.

Definition at line 128 of file readline.c.