readline.h

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#ifndef MWARE_READLINE_H
#define MWARE_READLINE_H

#include <cfg/compiler.h>

#include <string.h>

#define HISTORY_SIZE 32

typedef int (*getc_hook)(void* user_data);
typedef void (*putc_hook)(char ch, void* user_data);
typedef const char* (*match_hook)(void* user_data, const char* word, int word_len);
typedef void (*clear_hook)(void* user_data);

struct RLContext
{
    getc_hook get;
    void* get_param;

    putc_hook put;
    void* put_param;

    match_hook match;
    void* match_param;

    clear_hook clear;
    void* clear_param;

    const char* prompt;

    char real_history[HISTORY_SIZE];
    char* history;
    size_t history_pos;
    size_t line_pos;
};

INLINE void rl_init_ctx(struct RLContext *ctx)
{
    memset(ctx, 0, sizeof(*ctx));
    ctx->history = ctx->real_history;
}

INLINE void rl_clear_history(struct RLContext *ctx)
{
    memset(ctx->real_history, 0, sizeof(ctx->real_history));
    ctx->history_pos = 0;
    ctx->history = ctx->real_history;
}

INLINE void rl_sethook_get(struct RLContext* ctx, getc_hook get, void* get_param)
{ ctx->get = get; ctx->get_param = get_param; }

INLINE void rl_sethook_put(struct RLContext* ctx, putc_hook put, void* put_param)
{ ctx->put = put; ctx->put_param = put_param; }

INLINE void rl_sethook_match(struct RLContext* ctx, match_hook match, void* match_param)
{ ctx->match = match; ctx->match_param = match_param; }

INLINE void rl_sethook_clear(struct RLContext* ctx, clear_hook clear, void* clear_param)
{ ctx->clear = clear; ctx->clear_param = clear_param; }

INLINE void rl_setprompt(struct RLContext* ctx, const char* prompt)
{ ctx->prompt = prompt; }

const char* rl_readline(struct RLContext* ctx);

void rl_refresh(struct RLContext* ctx);

#endif /* MWARE_READLINE_H */