ui.c
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include "platform.h"
#include "ui.h"
/* stubs for when a driver isn't selected. */
static void null_ui(void) { assert(0 && "UI call without UI driver!"); }
static void ui_pump_null(void) { null_ui(); }
static void ui_add_to_log_null(const char *str, int debugging) { null_ui(); }
static void ui_fatal_null(const char *str) { null_ui(); }
static void ui_success_null(const char *str) { null_ui(); }
static void ui_msgbox_null(const char *str) { null_ui(); }
static void ui_total_progress_null(int percent) { null_ui(); }
static void ui_status_null(const char *str) { null_ui(); }
static void ui_title_null(const char *str) { null_ui(); }
static int ui_prompt_yn_null(const char *question) { null_ui(); return(0); }
static int ui_prompt_ny_null(const char *question) { null_ui(); return(0); }
static void ui_real_deinit_null(void) { null_ui(); }
static int ui_file_picker_null(char *buf, size_t bufsize) { null_ui(); return(0); }
static int ui_show_readme_null(const char *fname,const char *text) { null_ui(); return(0); }
static int ui_selected = 0;
int ui_init_carbon(void);
int ui_init_stdio(void);
typedef struct
{
const char *driver_name;
int (*initfunc)(void);
} UIDrivers;
static UIDrivers ui_drivers[] =
{
{ "carbon", ui_init_carbon },
{ "stdio", ui_init_stdio }, /* should probably always be last. */
{ NULL, NULL }
};
int ui_init(const char *request_driver)
{
int i;
if (ui_selected)
return(1);
/* make sure we're in a sane state... */
UI_SET_FUNC_POINTERS(null);
if (request_driver != NULL)
{
for (i = 0; ui_drivers[i].initfunc != NULL; i++)
{
if (strcmp(ui_drivers[i].driver_name, request_driver) == 0)
{
ui_selected = ui_drivers[i].initfunc();
break;
} /* if */
} /* for */
} /* if */
for (i = 0; (!ui_selected) && (ui_drivers[i].initfunc != NULL); i++)
ui_selected = ui_drivers[i].initfunc();
return(ui_selected);
} /* ui_init */
void ui_deinit(void)
{
if (!ui_selected)
return;
ui_real_deinit();
UI_SET_FUNC_POINTERS(null);
ui_selected = 0;
} /* ui_deinit */
/* The driver function pointers... */
void (*ui_real_deinit)(void) = ui_real_deinit_null;
void (*ui_pump)(void) = ui_pump_null;
void (*ui_add_to_log)(const char *str, int debugging) = ui_add_to_log_null;
void (*ui_fatal)(const char *str) = ui_fatal_null;
void (*ui_success)(const char *str) = ui_success_null;
void (*ui_msgbox)(const char *str) = ui_msgbox_null;
void (*ui_total_progress)(int percent) = ui_total_progress_null;
void (*ui_status)(const char *str) = ui_status_null;
void (*ui_title)(const char *str) = ui_title_null;
int (*ui_prompt_yn)(const char *question) = ui_prompt_yn_null;
int (*ui_prompt_ny)(const char *question) = ui_prompt_ny_null;
int (*ui_file_picker)(char *buf, size_t bufsize) = ui_file_picker_null;
int (*ui_show_readme)(const char *fname,const char *text)=ui_show_readme_null;
/* end of ui.c ... */