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Prepare for more than one File device.

This commit is contained in:
Andrew Alderwick 2022-03-17 18:31:33 +00:00
parent bca73244f0
commit 27089a77e4
4 changed files with 100 additions and 61 deletions
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120
src/devices/file.c
View File

@ -19,29 +19,32 @@ WITH REGARD TO THIS SOFTWARE.
#include <sys/stat.h>
#include <unistd.h>
static FILE *f;
static DIR *dir;
static char *current_filename = "";
static struct dirent *de;
static enum { IDLE,
typedef struct {
FILE *f;
DIR *dir;
char *current_filename;
struct dirent *de;
enum { IDLE,
FILE_READ,
FILE_WRITE,
DIR_READ } state;
} UxnFile;
static UxnFile uxn_file[POLYFILEY];
static void
reset(void)
reset(UxnFile *c)
{
if(f != NULL) {
fclose(f);
f = NULL;
if(c->f != NULL) {
fclose(c->f);
c->f = NULL;
}
if(dir != NULL) {
closedir(dir);
dir = NULL;
if(c->dir != NULL) {
closedir(c->dir);
c->dir = NULL;
}
de = NULL;
state = IDLE;
c->de = NULL;
c->state = IDLE;
}
static Uint16
@ -61,20 +64,20 @@ get_entry(char *p, Uint16 len, const char *pathname, const char *basename, int f
}
static Uint16
file_read_dir(char *dest, Uint16 len)
file_read_dir(UxnFile *c, char *dest, Uint16 len)
{
static char pathname[4096];
char *p = dest;
if(de == NULL) de = readdir(dir);
for(; de != NULL; de = readdir(dir)) {
if(c->de == NULL) c->de = readdir(c->dir);
for(; c->de != NULL; c->de = readdir(c->dir)) {
Uint16 n;
if(de->d_name[0] == '.' && de->d_name[1] == '\0')
if(c->de->d_name[0] == '.' && c->de->d_name[1] == '\0')
continue;
if(strlen(current_filename) + 1 + strlen(de->d_name) < sizeof(pathname))
sprintf(pathname, "%s/%s", current_filename, de->d_name);
if(strlen(c->current_filename) + 1 + strlen(c->de->d_name) < sizeof(pathname))
sprintf(pathname, "%s/%s", c->current_filename, c->de->d_name);
else
pathname[0] = '\0';
n = get_entry(p, len, pathname, de->d_name, 1);
n = get_entry(p, len, pathname, c->de->d_name, 1);
if(!n) break;
p += n;
len -= n;
@ -83,68 +86,69 @@ file_read_dir(char *dest, Uint16 len)
}
static Uint16
file_init(void *filename)
file_init(UxnFile *c, void *filename)
{
reset();
current_filename = filename;
reset(c);
c->current_filename = filename;
return 0;
}
static Uint16
file_read(void *dest, Uint16 len)
file_read(UxnFile *c, void *dest, Uint16 len)
{
if(state != FILE_READ && state != DIR_READ) {
reset();
if((dir = opendir(current_filename)) != NULL)
state = DIR_READ;
else if((f = fopen(current_filename, "rb")) != NULL)
state = FILE_READ;
if(c->state != FILE_READ && c->state != DIR_READ) {
reset(c);
if((c->dir = opendir(c->current_filename)) != NULL)
c->state = DIR_READ;
else if((c->f = fopen(c->current_filename, "rb")) != NULL)
c->state = FILE_READ;
}
if(state == FILE_READ)
return fread(dest, 1, len, f);
if(state == DIR_READ)
return file_read_dir(dest, len);
if(c->state == FILE_READ)
return fread(dest, 1, len, c->f);
if(c->state == DIR_READ)
return file_read_dir(c, dest, len);
return 0;
}
static Uint16
file_write(void *src, Uint16 len, Uint8 flags)
file_write(UxnFile *c, void *src, Uint16 len, Uint8 flags)
{
Uint16 ret = 0;
if(state != FILE_WRITE) {
reset();
if((f = fopen(current_filename, (flags & 0x01) ? "ab" : "wb")) != NULL)
state = FILE_WRITE;
if(c->state != FILE_WRITE) {
reset(c);
if((c->f = fopen(c->current_filename, (flags & 0x01) ? "ab" : "wb")) != NULL)
c->state = FILE_WRITE;
}
if(state == FILE_WRITE) {
if((ret = fwrite(src, 1, len, f)) > 0 && fflush(f) != 0)
if(c->state == FILE_WRITE) {
if((ret = fwrite(src, 1, len, c->f)) > 0 && fflush(c->f) != 0)
ret = 0;
}
return ret;
}
static Uint16
file_stat(void *dest, Uint16 len)
file_stat(UxnFile *c, void *dest, Uint16 len)
{
char *basename = strrchr(current_filename, '/');
char *basename = strrchr(c->current_filename, '/');
if(basename != NULL)
basename++;
else
basename = current_filename;
return get_entry(dest, len, current_filename, basename, 0);
basename = c->current_filename;
return get_entry(dest, len, c->current_filename, basename, 0);
}
static Uint16
file_delete(void)
file_delete(UxnFile *c)
{
return unlink(current_filename);
return unlink(c->current_filename);
}
/* IO */
void
file_deo(Device *d, Uint8 port)
file_i_deo(int instance, Device *d, Uint8 port)
{
UxnFile *c = &uxn_file[instance];
Uint16 addr, len, res;
switch(port) {
case 0x5:
@ -152,16 +156,16 @@ file_deo(Device *d, Uint8 port)
DEVPEEK16(len, 0xa);
if(len > 0x10000 - addr)
len = 0x10000 - addr;
res = file_stat(&d->u->ram[addr], len);
res = file_stat(c, &d->u->ram[addr], len);
DEVPOKE16(0x2, res);
break;
case 0x6:
res = file_delete();
res = file_delete(c);
DEVPOKE16(0x2, res);
break;
case 0x9:
DEVPEEK16(addr, 0x8);
res = file_init(&d->u->ram[addr]);
res = file_init(c, (char *)&d->u->ram[addr]);
DEVPOKE16(0x2, res);
break;
case 0xd:
@ -169,7 +173,7 @@ file_deo(Device *d, Uint8 port)
DEVPEEK16(len, 0xa);
if(len > 0x10000 - addr)
len = 0x10000 - addr;
res = file_read(&d->u->ram[addr], len);
res = file_read(c, &d->u->ram[addr], len);
DEVPOKE16(0x2, res);
break;
case 0xf:
@ -177,8 +181,14 @@ file_deo(Device *d, Uint8 port)
DEVPEEK16(len, 0xa);
if(len > 0x10000 - addr)
len = 0x10000 - addr;
res = file_write(&d->u->ram[addr], len, d->dat[0x7]);
res = file_write(c, &d->u->ram[addr], len, d->dat[0x7]);
DEVPOKE16(0x2, res);
break;
}
}
Uint8
file_i_dei(int instance, Device *d, Uint8 port)
{
return d->dat[port];
}

5
src/devices/file.h
View File

@ -10,4 +10,7 @@ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE.
*/
void file_deo(Device *d, Uint8 port);
#define POLYFILEY 1
void file_i_deo(int instance, Device *d, Uint8 port);
Uint8 file_i_dei(int instance, Device *d, Uint8 port);

16
src/uxncli.c
View File

@ -17,6 +17,8 @@ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE.
*/
static Device *devfile0;
static int
error(char *msg, const char *err)
{
@ -42,6 +44,18 @@ console_deo(Device *d, Uint8 port)
}
}
static void
file_deo(Device *d, Uint8 port)
{
file_i_deo(d - devfile0, d, port);
}
static Uint8
file_dei(Device *d, Uint8 port)
{
return file_i_dei(d - devfile0, d, port);
}
static Uint8
nil_dei(Device *d, Uint8 port)
{
@ -102,7 +116,7 @@ start(Uxn *u)
/* empty */ uxn_port(u, 0x7, nil_dei, nil_deo);
/* empty */ uxn_port(u, 0x8, nil_dei, nil_deo);
/* empty */ uxn_port(u, 0x9, nil_dei, nil_deo);
/* file */ uxn_port(u, 0xa, nil_dei, file_deo);
/* file */ devfile0 = uxn_port(u, 0xa, file_dei, file_deo);
/* datetime */ uxn_port(u, 0xb, datetime_dei, nil_deo);
/* empty */ uxn_port(u, 0xc, nil_dei, nil_deo);
/* empty */ uxn_port(u, 0xd, nil_dei, nil_deo);

16
src/uxnemu.c
View File

@ -42,7 +42,7 @@ static SDL_Rect gRect;
/* devices */
static Device *devscreen, *devmouse, *devctrl, *devaudio0;
static Device *devscreen, *devmouse, *devctrl, *devaudio0, *devfile0;
static Uint8 zoom = 1;
static Uint32 stdin_event, audio0_event;
@ -207,6 +207,18 @@ audio_deo(Device *d, Uint8 port)
}
}
static void
file_deo(Device *d, Uint8 port)
{
file_i_deo(d - devfile0, d, port);
}
static Uint8
file_dei(Device *d, Uint8 port)
{
return file_i_dei(d - devfile0, d, port);
}
static Uint8
nil_dei(Device *d, Uint8 port)
{
@ -253,7 +265,7 @@ start(Uxn *u, char *rom)
/* unused */ uxn_port(u, 0x7, nil_dei, nil_deo);
/* control */ devctrl = uxn_port(u, 0x8, nil_dei, nil_deo);
/* mouse */ devmouse = uxn_port(u, 0x9, nil_dei, nil_deo);
/* file */ uxn_port(u, 0xa, nil_dei, file_deo);
/* file */ devfile0 = uxn_port(u, 0xa, file_dei, file_deo);
/* datetime */ uxn_port(u, 0xb, datetime_dei, nil_deo);
/* unused */ uxn_port(u, 0xc, nil_dei, nil_deo);
/* unused */ uxn_port(u, 0xd, nil_dei, nil_deo);