console.cpp

#include "allegro5/allegro_native_dialog.h"
#include "console.h"
#include <stdio.h>
#include <stdarg.h>

ALLEGRO_TEXTLOG *textlog = NULL;
void open_log(void)
{
    textlog = al_open_native_text_log("Log", 0);
}

void open_log_monospace(void)
{
    textlog = al_open_native_text_log("Log", ALLEGRO_TEXTLOG_MONOSPACE);
}

void close_log(bool wait_for_user)
{
    if (textlog && wait_for_user) {
        ALLEGRO_EVENT_QUEUE *queue = al_create_event_queue();
        al_register_event_source(queue, al_get_native_text_log_event_source(
            textlog));
        al_wait_for_event(queue, NULL);
        al_destroy_event_queue(queue);
    }

    al_close_native_text_log(textlog);
    textlog = NULL;
}

void log_printf(char const *format, ...)
{
    char str[1024];
    va_list args;
    va_start(args, format);
    vsnprintf(str, sizeof str, format, args);
    va_end(args);
    al_append_native_text_log(textlog, "%s", str);
}

void DisplayErr(const char *format, ...)
{
    ALLEGRO_USTR *buf;
    va_list ap;
    const char *s;

    /* Fast path for common case. */
    if (0 == strcmp(format, "%s")) {
        va_start(ap, format);
        s = va_arg(ap, const char *);
        al_show_native_message_box(al_get_current_display(), "Error", "ERROR", s, NULL, ALLEGRO_MESSAGEBOX_ERROR);
        va_end(ap);
        return;
    }

    va_start(ap, format);
    buf = al_ustr_new("");
    al_ustr_vappendf(buf, format, ap);
    va_end(ap);

    al_show_native_message_box(al_get_current_display(), "Error", "ERROR", al_cstr(buf), NULL, ALLEGRO_MESSAGEBOX_ERROR);

    al_ustr_free(buf);
}