139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
|
|
#include "nlr.h"
|
|
#include "misc.h"
|
|
#include "mpconfig.h"
|
|
#include "qstr.h"
|
|
#include "obj.h"
|
|
#include "runtime.h"
|
|
#include "stream.h"
|
|
|
|
typedef struct _mp_obj_fdfile_t {
|
|
mp_obj_base_t base;
|
|
int fd;
|
|
} mp_obj_fdfile_t;
|
|
|
|
static const mp_obj_type_t rawfile_type;
|
|
|
|
static void fdfile_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
|
|
mp_obj_fdfile_t *self = self_in;
|
|
print(env, "<io.FileIO %d>", self->fd);
|
|
}
|
|
|
|
static machine_int_t fdfile_read(mp_obj_t o_in, void *buf, machine_uint_t size, int *errcode) {
|
|
mp_obj_fdfile_t *o = o_in;
|
|
machine_int_t r = read(o->fd, buf, size);
|
|
if (r == -1) {
|
|
*errcode = errno;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static machine_int_t fdfile_write(mp_obj_t o_in, const void *buf, machine_uint_t size, int *errcode) {
|
|
mp_obj_fdfile_t *o = o_in;
|
|
machine_int_t r = write(o->fd, buf, size);
|
|
if (r == -1) {
|
|
*errcode = errno;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static mp_obj_t fdfile_close(mp_obj_t self_in) {
|
|
mp_obj_fdfile_t *self = self_in;
|
|
close(self->fd);
|
|
return mp_const_none;
|
|
}
|
|
static MP_DEFINE_CONST_FUN_OBJ_1(fdfile_close_obj, fdfile_close);
|
|
|
|
static mp_obj_fdfile_t *fdfile_new(int fd) {
|
|
mp_obj_fdfile_t *o = m_new_obj(mp_obj_fdfile_t);
|
|
o->base.type = &rawfile_type;
|
|
o->fd = fd;
|
|
return o;
|
|
}
|
|
|
|
static mp_obj_t fdfile_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
|
|
mp_obj_fdfile_t *o = m_new_obj(mp_obj_fdfile_t);
|
|
o->base.type = type_in;
|
|
|
|
if (MP_OBJ_IS_SMALL_INT(args[0])) {
|
|
o->fd = MP_OBJ_SMALL_INT_VALUE(args[0]);
|
|
return o;
|
|
}
|
|
|
|
const char *fname = mp_obj_str_get_str(args[0]);
|
|
const char *mode_s;
|
|
if (n_args > 1) {
|
|
mode_s = mp_obj_str_get_str(args[1]);
|
|
} else {
|
|
mode_s = "r";
|
|
}
|
|
|
|
int mode = 0;
|
|
while (*mode_s) {
|
|
switch (*mode_s++) {
|
|
// Note: these assume O_RDWR = O_RDONLY | O_WRONLY
|
|
case 'r':
|
|
mode |= O_RDONLY;
|
|
break;
|
|
case 'w':
|
|
mode |= O_WRONLY | O_CREAT | O_TRUNC;
|
|
break;
|
|
case 'a':
|
|
mode |= O_APPEND;
|
|
break;
|
|
case '+':
|
|
mode |= O_RDWR;
|
|
break;
|
|
}
|
|
}
|
|
|
|
int fd = open(fname, mode, 0644);
|
|
if (fd == -1) {
|
|
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_OSError, "[Errno %d]", errno));
|
|
}
|
|
return fdfile_new(fd);
|
|
}
|
|
|
|
static const mp_method_t rawfile_type_methods[] = {
|
|
{ "read", &mp_stream_read_obj },
|
|
{ "readall", &mp_stream_readall_obj },
|
|
{ "readline", &mp_stream_unbuffered_readline_obj},
|
|
{ "write", &mp_stream_write_obj },
|
|
{ "close", &fdfile_close_obj },
|
|
{ NULL, NULL },
|
|
};
|
|
|
|
static const mp_obj_type_t rawfile_type = {
|
|
{ &mp_const_type },
|
|
"io.FileIO",
|
|
.print = fdfile_print,
|
|
.make_new = fdfile_make_new,
|
|
.getiter = mp_identity,
|
|
.iternext = mp_stream_unbuffered_iter,
|
|
.stream_p = {
|
|
.read = fdfile_read,
|
|
.write = fdfile_write,
|
|
},
|
|
.methods = rawfile_type_methods,
|
|
};
|
|
|
|
// Factory function for I/O stream classes
|
|
mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args) {
|
|
// TODO: analyze mode and buffering args and instantiate appropriate type
|
|
return fdfile_make_new((mp_obj_t)&rawfile_type, n_args, 0, args);
|
|
}
|
|
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_open_obj, 1, 2, mp_builtin_open);
|
|
|
|
void file_init() {
|
|
rt_store_name(MP_QSTR_open, (mp_obj_t)&mp_builtin_open_obj);
|
|
|
|
mp_obj_t m_sys = mp_obj_new_module(MP_QSTR_sys);
|
|
rt_store_attr(m_sys, MP_QSTR_stdin, fdfile_new(STDIN_FILENO));
|
|
rt_store_attr(m_sys, MP_QSTR_stdout, fdfile_new(STDOUT_FILENO));
|
|
rt_store_attr(m_sys, MP_QSTR_stderr, fdfile_new(STDERR_FILENO));
|
|
}
|