6 #include "mruby/array.h"
7 #include "mruby/class.h"
8 #include "mruby/data.h"
9 #include "mruby/hash.h"
10 #include "mruby/string.h"
11 #include "mruby/variable.h"
12 #include "mruby/ext/io.h"
13 #include "mruby/error.h"
15 #include <sys/types.h>
18 #if defined(_WIN32) || defined(_WIN64)
28 #define isatty _isatty
29 #define WEXITSTATUS(x) (x)
32 typedef long fsuseconds_t;
34 typedef int mrb_io_read_write_size;
37 #define O_TMPFILE O_TEMPORARY
44 typedef size_t fsize_t;
45 typedef time_t ftime_t;
46 typedef suseconds_t fsuseconds_t;
47 typedef mode_t fmode_t;
48 typedef ssize_t mrb_io_read_write_size;
52 typedef mrb_int pid_t;
60 #define OPEN_ACCESS_MODE_FLAGS (O_RDONLY | O_WRONLY | O_RDWR)
61 #define OPEN_RDONLY_P(f) ((mrb_bool)(((f) & OPEN_ACCESS_MODE_FLAGS) == O_RDONLY))
62 #define OPEN_WRONLY_P(f) ((mrb_bool)(((f) & OPEN_ACCESS_MODE_FLAGS) == O_WRONLY))
63 #define OPEN_RDWR_P(f) ((mrb_bool)(((f) & OPEN_ACCESS_MODE_FLAGS) == O_RDWR))
64 #define OPEN_READABLE_P(f) ((mrb_bool)(OPEN_RDONLY_P(f) || OPEN_RDWR_P(f)))
65 #define OPEN_WRITABLE_P(f) ((mrb_bool)(OPEN_WRONLY_P(f) || OPEN_RDWR_P(f)))
67 static void mrb_io_free(mrb_state *mrb, void *ptr);
68 struct mrb_data_type mrb_io_type = { "IO", mrb_io_free };
71 static struct mrb_io *io_get_open_fptr(mrb_state *mrb, mrb_value self);
72 static int mrb_io_modestr_to_flags(mrb_state *mrb, const char *modestr);
73 static int mrb_io_mode_to_flags(mrb_state *mrb, mrb_value mode);
74 static void fptr_finalize(mrb_state *mrb, struct mrb_io *fptr, int quiet);
76 static struct mrb_io *
77 io_get_open_fptr(mrb_state *mrb, mrb_value self)
81 fptr = (struct mrb_io *)mrb_data_get_ptr(mrb, self, &mrb_io_type);
83 mrb_raise(mrb, E_IO_ERROR, "uninitialized stream.");
86 mrb_raise(mrb, E_IO_ERROR, "closed stream.");
92 io_set_process_status(mrb_state *mrb, pid_t pid, int status)
94 struct RClass *c_process, *c_status;
98 if (mrb_class_defined(mrb, "Process")) {
99 c_process = mrb_module_get(mrb, "Process");
100 if (mrb_const_defined(mrb, mrb_obj_value(c_process), mrb_intern_cstr(mrb, "Status"))) {
101 c_status = mrb_class_get_under(mrb, c_process, "Status");
104 if (c_status != NULL) {
105 v = mrb_funcall(mrb, mrb_obj_value(c_status), "new", 2, mrb_fixnum_value(pid), mrb_fixnum_value(status));
107 v = mrb_fixnum_value(WEXITSTATUS(status));
109 mrb_gv_set(mrb, mrb_intern_cstr(mrb, "$?"), v);
113 mrb_io_modestr_to_flags(mrb_state *mrb, const char *mode)
116 const char *m = mode;
123 flags = O_WRONLY | O_CREAT | O_TRUNC;
126 flags = O_WRONLY | O_CREAT | O_APPEND;
129 mrb_raisef(mrb, E_ARGUMENT_ERROR, "illegal access mode %s", mode);
130 flags = 0; /* not reached */
141 flags = (flags & ~OPEN_ACCESS_MODE_FLAGS) | O_RDWR;
144 /* XXX: PASSTHROUGH*/
146 mrb_raisef(mrb, E_ARGUMENT_ERROR, "illegal access mode %s", mode);
154 mrb_io_mode_to_flags(mrb_state *mrb, mrb_value mode)
156 if (mrb_nil_p(mode)) {
157 return mrb_io_modestr_to_flags(mrb, "r");
159 else if (mrb_string_p(mode)) {
160 return mrb_io_modestr_to_flags(mrb, RSTRING_CSTR(mrb, mode));
164 mrb_int flags0 = mrb_int(mrb, mode);
166 switch (flags0 & MRB_O_ACCMODE) {
177 mrb_raisef(mrb, E_ARGUMENT_ERROR, "illegal access mode %v", mode);
180 if (flags0 & MRB_O_APPEND) flags |= O_APPEND;
181 if (flags0 & MRB_O_CREAT) flags |= O_CREAT;
182 if (flags0 & MRB_O_EXCL) flags |= O_EXCL;
183 if (flags0 & MRB_O_TRUNC) flags |= O_TRUNC;
185 if (flags0 & MRB_O_NONBLOCK) flags |= O_NONBLOCK;
188 if (flags0 & MRB_O_NOCTTY) flags |= O_NOCTTY;
191 if (flags0 & MRB_O_BINARY) flags |= O_BINARY;
193 #ifdef O_SHARE_DELETE
194 if (flags0 & MRB_O_SHARE_DELETE) flags |= O_SHARE_DELETE;
197 if (flags0 & MRB_O_SYNC) flags |= O_SYNC;
200 if (flags0 & MRB_O_DSYNC) flags |= O_DSYNC;
203 if (flags0 & MRB_O_RSYNC) flags |= O_RSYNC;
206 if (flags0 & MRB_O_NOFOLLOW) flags |= O_NOFOLLOW;
209 if (flags0 & MRB_O_NOATIME) flags |= O_NOATIME;
212 if (flags0 & MRB_O_DIRECT) flags |= O_DIRECT;
215 if (flags0 & MRB_O_TMPFILE) flags |= O_TMPFILE;
223 mrb_fd_cloexec(mrb_state *mrb, int fd)
225 #if defined(F_GETFD) && defined(F_SETFD) && defined(FD_CLOEXEC)
228 flags = fcntl(fd, F_GETFD);
230 mrb_bug(mrb, "mrb_fd_cloexec: fcntl(%d, F_GETFD) failed: %d", fd, errno);
233 flags2 = flags & ~FD_CLOEXEC; /* Clear CLOEXEC for standard file descriptors: 0, 1, 2. */
236 flags2 = flags | FD_CLOEXEC; /* Set CLOEXEC for non-standard file descriptors: 3, 4, 5, ... */
238 if (flags != flags2) {
239 if (fcntl(fd, F_SETFD, flags2) == -1) {
240 mrb_bug(mrb, "mrb_fd_cloexec: fcntl(%d, F_SETFD, %d) failed: %d", fd, flags2, errno);
246 #if !defined(_WIN32) && !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE)
248 mrb_cloexec_pipe(mrb_state *mrb, int fildes[2])
254 mrb_fd_cloexec(mrb, fildes[0]);
255 mrb_fd_cloexec(mrb, fildes[1]);
260 mrb_pipe(mrb_state *mrb, int pipes[2])
263 ret = mrb_cloexec_pipe(mrb, pipes);
265 if (errno == EMFILE || errno == ENFILE) {
266 mrb_garbage_collect(mrb);
267 ret = mrb_cloexec_pipe(mrb, pipes);
274 mrb_proc_exec(const char *pname)
279 while (*s == ' ' || *s == '\t' || *s == '\n')
287 execl("/bin/sh", "sh", "-c", pname, (char *)NULL);
293 mrb_io_free(mrb_state *mrb, void *ptr)
295 struct mrb_io *io = (struct mrb_io *)ptr;
297 fptr_finalize(mrb, io, TRUE);
302 static struct mrb_io *
303 mrb_io_alloc(mrb_state *mrb)
307 fptr = (struct mrb_io *)mrb_malloc(mrb, sizeof(struct mrb_io));
323 option_to_fd(mrb_state *mrb, mrb_value hash, const char *key)
327 if (!mrb_hash_p(hash)) return -1;
328 opt = mrb_hash_fetch(mrb, hash, mrb_symbol_value(mrb_intern_static(mrb, key, strlen(key))), mrb_nil_value());
329 if (mrb_nil_p(opt)) return -1;
331 switch (mrb_type(opt)) {
332 case MRB_TT_DATA: /* IO */
333 return mrb_io_fileno(mrb, opt);
335 return (int)mrb_fixnum(opt);
337 mrb_raise(mrb, E_ARGUMENT_ERROR, "wrong exec redirect action");
340 return -1; /* never reached */
345 mrb_io_s_popen(mrb_state *mrb, mrb_value klass)
348 mrb_value mode = mrb_str_new_cstr(mrb, "r");
349 mrb_value opt = mrb_hash_new(mrb);
355 PROCESS_INFORMATION pi;
356 SECURITY_ATTRIBUTES saAttr;
362 int opt_in, opt_out, opt_err;
364 ifd[0] = INVALID_HANDLE_VALUE;
365 ifd[1] = INVALID_HANDLE_VALUE;
366 ofd[0] = INVALID_HANDLE_VALUE;
367 ofd[1] = INVALID_HANDLE_VALUE;
369 mrb_get_args(mrb, "S|oH", &cmd, &mode, &opt);
370 io = mrb_obj_value(mrb_data_object_alloc(mrb, mrb_class_ptr(klass), NULL, &mrb_io_type));
372 pname = RSTRING_CSTR(mrb, cmd);
373 flags = mrb_io_mode_to_flags(mrb, mode);
375 doexec = (strcmp("-", pname) != 0);
376 opt_in = option_to_fd(mrb, opt, "in");
377 opt_out = option_to_fd(mrb, opt, "out");
378 opt_err = option_to_fd(mrb, opt, "err");
380 saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
381 saAttr.bInheritHandle = TRUE;
382 saAttr.lpSecurityDescriptor = NULL;
384 if (OPEN_READABLE_P(flags)) {
385 if (!CreatePipe(&ofd[0], &ofd[1], &saAttr, 0)
386 || !SetHandleInformation(ofd[0], HANDLE_FLAG_INHERIT, 0)) {
387 mrb_sys_fail(mrb, "pipe");
391 if (OPEN_WRITABLE_P(flags)) {
392 if (!CreatePipe(&ifd[0], &ifd[1], &saAttr, 0)
393 || !SetHandleInformation(ifd[1], HANDLE_FLAG_INHERIT, 0)) {
394 mrb_sys_fail(mrb, "pipe");
399 ZeroMemory(&pi, sizeof(pi));
400 ZeroMemory(&si, sizeof(si));
402 si.dwFlags |= STARTF_USESHOWWINDOW;
403 si.wShowWindow = SW_HIDE;
404 si.dwFlags |= STARTF_USESTDHANDLES;
405 if (OPEN_READABLE_P(flags)) {
406 si.hStdOutput = ofd[1];
407 si.hStdError = ofd[1];
409 if (OPEN_WRITABLE_P(flags)) {
410 si.hStdInput = ifd[0];
413 NULL, (char*)pname, NULL, NULL,
414 TRUE, CREATE_NEW_PROCESS_GROUP, NULL, NULL, &si, &pi)) {
419 mrb_raisef(mrb, E_IO_ERROR, "command not found: %v", cmd);
421 CloseHandle(pi.hThread);
424 pid = pi.dwProcessId;
427 mrb_iv_set(mrb, io, mrb_intern_cstr(mrb, "@buf"), mrb_str_new_cstr(mrb, ""));
429 fptr = mrb_io_alloc(mrb);
430 fptr->fd = _open_osfhandle((intptr_t)ofd[0], 0);
431 fptr->fd2 = _open_osfhandle((intptr_t)ifd[1], 0);
433 fptr->readable = OPEN_READABLE_P(flags);
434 fptr->writable = OPEN_WRITABLE_P(flags);
437 DATA_TYPE(io) = &mrb_io_type;
441 #elif defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
443 mrb_io_s_popen(mrb_state *mrb, mrb_value klass)
445 mrb_raise(mrb, E_NOTIMP_ERROR, "IO#popen is not supported on the platform");
446 return mrb_false_value();
450 mrb_io_s_popen(mrb_state *mrb, mrb_value klass)
452 mrb_value cmd, io, result;
453 mrb_value mode = mrb_str_new_cstr(mrb, "r");
454 mrb_value opt = mrb_hash_new(mrb);
458 int pid, flags, fd, write_fd = -1;
459 int pr[2] = { -1, -1 };
460 int pw[2] = { -1, -1 };
463 int opt_in, opt_out, opt_err;
465 mrb_get_args(mrb, "S|oH", &cmd, &mode, &opt);
466 io = mrb_obj_value(mrb_data_object_alloc(mrb, mrb_class_ptr(klass), NULL, &mrb_io_type));
468 pname = RSTRING_CSTR(mrb, cmd);
469 flags = mrb_io_mode_to_flags(mrb, mode);
471 doexec = (strcmp("-", pname) != 0);
472 opt_in = option_to_fd(mrb, opt, "in");
473 opt_out = option_to_fd(mrb, opt, "out");
474 opt_err = option_to_fd(mrb, opt, "err");
476 if (OPEN_READABLE_P(flags)) {
477 if (pipe(pr) == -1) {
478 mrb_sys_fail(mrb, "pipe");
480 mrb_fd_cloexec(mrb, pr[0]);
481 mrb_fd_cloexec(mrb, pr[1]);
484 if (OPEN_WRITABLE_P(flags)) {
485 if (pipe(pw) == -1) {
486 if (pr[0] != -1) close(pr[0]);
487 if (pr[1] != -1) close(pr[1]);
488 mrb_sys_fail(mrb, "pipe");
490 mrb_fd_cloexec(mrb, pw[0]);
491 mrb_fd_cloexec(mrb, pw[1]);
501 result = mrb_nil_value();
502 switch (pid = fork()) {
513 if (OPEN_READABLE_P(flags)) {
520 if (OPEN_WRITABLE_P(flags)) {
528 for (fd = 3; fd < NOFILE; fd++) {
531 mrb_proc_exec(pname);
532 mrb_raisef(mrb, E_IO_ERROR, "command not found: %v", cmd);
535 result = mrb_nil_value();
538 default: /* parent */
539 if (OPEN_RDWR_P(flags)) {
544 } else if (OPEN_RDONLY_P(flags)) {
552 mrb_iv_set(mrb, io, mrb_intern_cstr(mrb, "@buf"), mrb_str_new_cstr(mrb, ""));
554 fptr = mrb_io_alloc(mrb);
556 fptr->fd2 = write_fd;
558 fptr->readable = OPEN_READABLE_P(flags);
559 fptr->writable = OPEN_WRITABLE_P(flags);
562 DATA_TYPE(io) = &mrb_io_type;
569 if (OPEN_READABLE_P(flags)) {
573 if (OPEN_WRITABLE_P(flags)) {
578 mrb_sys_fail(mrb, "pipe_open failed.");
586 mrb_dup(mrb_state *mrb, int fd, mrb_bool *failed)
595 if (new_fd > 0) *failed = FALSE;
600 mrb_io_initialize_copy(mrb_state *mrb, mrb_value copy)
602 mrb_value orig = mrb_get_arg1(mrb);
604 struct mrb_io *fptr_copy;
605 struct mrb_io *fptr_orig;
606 mrb_bool failed = TRUE;
608 fptr_orig = io_get_open_fptr(mrb, orig);
609 fptr_copy = (struct mrb_io *)DATA_PTR(copy);
610 if (fptr_orig == fptr_copy) return copy;
611 if (fptr_copy != NULL) {
612 fptr_finalize(mrb, fptr_copy, FALSE);
613 mrb_free(mrb, fptr_copy);
615 fptr_copy = (struct mrb_io *)mrb_io_alloc(mrb);
617 DATA_TYPE(copy) = &mrb_io_type;
618 DATA_PTR(copy) = fptr_copy;
620 buf = mrb_iv_get(mrb, orig, mrb_intern_cstr(mrb, "@buf"));
621 mrb_iv_set(mrb, copy, mrb_intern_cstr(mrb, "@buf"), buf);
623 fptr_copy->fd = mrb_dup(mrb, fptr_orig->fd, &failed);
625 mrb_sys_fail(mrb, 0);
627 mrb_fd_cloexec(mrb, fptr_copy->fd);
629 if (fptr_orig->fd2 != -1) {
630 fptr_copy->fd2 = mrb_dup(mrb, fptr_orig->fd2, &failed);
632 close(fptr_copy->fd);
633 mrb_sys_fail(mrb, 0);
635 mrb_fd_cloexec(mrb, fptr_copy->fd2);
638 fptr_copy->pid = fptr_orig->pid;
639 fptr_copy->readable = fptr_orig->readable;
640 fptr_copy->writable = fptr_orig->writable;
641 fptr_copy->sync = fptr_orig->sync;
642 fptr_copy->is_socket = fptr_orig->is_socket;
648 check_file_descriptor(mrb_state *mrb, mrb_int fd)
653 #if MRB_INT_MIN < INT_MIN || MRB_INT_MAX > INT_MAX
662 int len = sizeof(err);
664 if (getsockopt(fdi, SOL_SOCKET, SO_ERROR, (char*)&err, &len) == 0) {
669 if (fdi < 0 || fdi > _getmaxstdio()) {
674 if (fstat(fdi, &sb) != 0) {
681 mrb_sys_fail(mrb, "bad file descriptor");
685 mrb_io_initialize(mrb_state *mrb, mrb_value io)
692 mode = opt = mrb_nil_value();
694 mrb_get_args(mrb, "i|oo", &fd, &mode, &opt);
695 check_file_descriptor(mrb, fd);
696 if (mrb_nil_p(mode)) {
697 mode = mrb_str_new_cstr(mrb, "r");
699 if (mrb_nil_p(opt)) {
700 opt = mrb_hash_new(mrb);
703 flags = mrb_io_mode_to_flags(mrb, mode);
705 mrb_iv_set(mrb, io, mrb_intern_cstr(mrb, "@buf"), mrb_str_new_cstr(mrb, ""));
707 fptr = (struct mrb_io *)DATA_PTR(io);
709 fptr_finalize(mrb, fptr, TRUE);
712 fptr = mrb_io_alloc(mrb);
714 DATA_TYPE(io) = &mrb_io_type;
718 fptr->readable = OPEN_READABLE_P(flags);
719 fptr->writable = OPEN_WRITABLE_P(flags);
725 fptr_finalize(mrb_state *mrb, struct mrb_io *fptr, int quiet)
735 if (fptr->is_socket) {
736 if (closesocket(fptr->fd) != 0) {
737 saved_errno = WSAGetLastError();
742 if (fptr->fd != -1) {
743 if (close(fptr->fd) == -1) {
751 if (close(fptr->fd2) == -1) {
752 if (saved_errno == 0) {
759 if (fptr->pid != 0) {
760 #if !defined(_WIN32) && !defined(_WIN64)
764 pid = waitpid(fptr->pid, &status, 0);
765 } while (pid == -1 && errno == EINTR);
766 if (!quiet && pid == fptr->pid) {
767 io_set_process_status(mrb, pid, status);
770 HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, fptr->pid);
772 if (WaitForSingleObject(h, INFINITE) && GetExitCodeProcess(h, &status))
774 io_set_process_status(mrb, fptr->pid, (int)status);
778 /* Note: we don't raise an exception when waitpid(3) fails */
781 if (!quiet && saved_errno != 0) {
783 mrb_sys_fail(mrb, "fptr_finalize failed.");
788 mrb_io_check_readable(mrb_state *mrb, mrb_value self)
790 struct mrb_io *fptr = io_get_open_fptr(mrb, self);
791 if (! fptr->readable) {
792 mrb_raise(mrb, E_IO_ERROR, "not opened for reading");
794 return mrb_nil_value();
798 mrb_io_isatty(mrb_state *mrb, mrb_value self)
802 fptr = io_get_open_fptr(mrb, self);
803 if (isatty(fptr->fd) == 0)
804 return mrb_false_value();
805 return mrb_true_value();
809 mrb_io_s_for_fd(mrb_state *mrb, mrb_value klass)
811 struct RClass *c = mrb_class_ptr(klass);
812 enum mrb_vtype ttype = MRB_INSTANCE_TT(c);
815 /* copied from mrb_instance_alloc() */
816 if (ttype == 0) ttype = MRB_TT_OBJECT;
817 obj = mrb_obj_value((struct RObject*)mrb_obj_alloc(mrb, ttype, c));
818 return mrb_io_initialize(mrb, obj);
822 mrb_io_s_sysclose(mrb_state *mrb, mrb_value klass)
825 mrb_get_args(mrb, "i", &fd);
826 if (close((int)fd) == -1) {
827 mrb_sys_fail(mrb, "close");
829 return mrb_fixnum_value(0);
833 mrb_cloexec_open(mrb_state *mrb, const char *pathname, mrb_int flags, mrb_int mode)
835 int fd, retry = FALSE;
836 char* fname = mrb_locale_from_utf8(pathname, -1);
839 /* O_CLOEXEC is available since Linux 2.6.23. Linux 2.6.18 silently ignore it. */
841 #elif defined O_NOINHERIT
842 flags |= O_NOINHERIT;
845 fd = open(fname, (int)flags, (fmode_t)mode);
851 mrb_garbage_collect(mrb);
857 mrb_sys_fail(mrb, RSTRING_CSTR(mrb, mrb_format(mrb, "open %s", pathname)));
859 mrb_locale_free(fname);
862 mrb_fd_cloexec(mrb, fd);
868 mrb_io_s_sysopen(mrb_state *mrb, mrb_value klass)
870 mrb_value path = mrb_nil_value();
871 mrb_value mode = mrb_nil_value();
872 mrb_int fd, perm = -1;
876 mrb_get_args(mrb, "S|oi", &path, &mode, &perm);
881 pat = RSTRING_CSTR(mrb, path);
882 flags = mrb_io_mode_to_flags(mrb, mode);
883 fd = mrb_cloexec_open(mrb, pat, flags, perm);
884 return mrb_fixnum_value(fd);
887 static mrb_value mrb_io_sysread_common(mrb_state *mrb,
888 mrb_io_read_write_size (*readfunc)(int, void *, fsize_t, off_t),
889 mrb_value io, mrb_value buf, mrb_int maxlen, off_t offset);
891 static mrb_io_read_write_size
892 mrb_sysread_dummy(int fd, void *buf, fsize_t nbytes, off_t offset)
894 return (mrb_io_read_write_size)read(fd, buf, nbytes);
898 mrb_io_sysread(mrb_state *mrb, mrb_value io)
900 mrb_value buf = mrb_nil_value();
903 mrb_get_args(mrb, "i|S", &maxlen, &buf);
905 return mrb_io_sysread_common(mrb, mrb_sysread_dummy, io, buf, maxlen, 0);
909 mrb_io_sysread_common(mrb_state *mrb,
910 mrb_io_read_write_size (*readfunc)(int, void *, fsize_t, off_t),
911 mrb_value io, mrb_value buf, mrb_int maxlen, off_t offset)
917 mrb_raise(mrb, E_ARGUMENT_ERROR, "negative expanding string size");
919 else if (maxlen == 0) {
920 return mrb_str_new(mrb, NULL, maxlen);
923 if (mrb_nil_p(buf)) {
924 buf = mrb_str_new(mrb, NULL, maxlen);
927 if (RSTRING_LEN(buf) != maxlen) {
928 buf = mrb_str_resize(mrb, buf, maxlen);
931 mrb_str_modify(mrb, RSTRING(buf));
934 fptr = (struct mrb_io *)io_get_open_fptr(mrb, io);
935 if (!fptr->readable) {
936 mrb_raise(mrb, E_IO_ERROR, "not opened for reading");
938 ret = readfunc(fptr->fd, RSTRING_PTR(buf), (fsize_t)maxlen, offset);
940 mrb_sys_fail(mrb, "sysread failed");
942 if (RSTRING_LEN(buf) != ret) {
943 buf = mrb_str_resize(mrb, buf, ret);
945 if (ret == 0 && maxlen > 0) {
946 mrb_raise(mrb, E_EOF_ERROR, "sysread failed: End of File");
952 mrb_io_sysseek(mrb_state *mrb, mrb_value io)
956 mrb_int offset, whence = -1;
958 mrb_get_args(mrb, "i|i", &offset, &whence);
963 fptr = io_get_open_fptr(mrb, io);
964 pos = lseek(fptr->fd, (off_t)offset, (int)whence);
966 mrb_sys_fail(mrb, "sysseek");
968 if (pos > MRB_INT_MAX) {
969 #ifndef MRB_WITHOUT_FLOAT
970 return mrb_float_value(mrb, (mrb_float)pos);
972 mrb_raise(mrb, E_IO_ERROR, "sysseek reached too far for MRB_WITHOUT_FLOAT");
975 return mrb_fixnum_value(pos);
980 mrb_io_syswrite_common(mrb_state *mrb,
981 mrb_io_read_write_size (*writefunc)(int, const void *, fsize_t, off_t),
982 mrb_value io, mrb_value buf, off_t offset)
987 fptr = io_get_open_fptr(mrb, io);
988 if (! fptr->writable) {
989 mrb_raise(mrb, E_IO_ERROR, "not opened for writing");
992 if (fptr->fd2 == -1) {
997 length = writefunc(fd, RSTRING_PTR(buf), (fsize_t)RSTRING_LEN(buf), offset);
999 mrb_sys_fail(mrb, 0);
1002 return mrb_fixnum_value(length);
1005 static mrb_io_read_write_size
1006 mrb_syswrite_dummy(int fd, const void *buf, fsize_t nbytes, off_t offset)
1008 return (mrb_io_read_write_size)write(fd, buf, nbytes);
1012 mrb_io_syswrite(mrb_state *mrb, mrb_value io)
1016 mrb_get_args(mrb, "S", &buf);
1018 return mrb_io_syswrite_common(mrb, mrb_syswrite_dummy, io, buf, 0);
1022 mrb_io_close(mrb_state *mrb, mrb_value self)
1024 struct mrb_io *fptr;
1025 fptr = io_get_open_fptr(mrb, self);
1026 fptr_finalize(mrb, fptr, FALSE);
1027 return mrb_nil_value();
1031 mrb_io_close_write(mrb_state *mrb, mrb_value self)
1033 struct mrb_io *fptr;
1034 fptr = io_get_open_fptr(mrb, self);
1035 if (close((int)fptr->fd2) == -1) {
1036 mrb_sys_fail(mrb, "close");
1038 return mrb_nil_value();
1042 mrb_io_closed(mrb_state *mrb, mrb_value io)
1044 struct mrb_io *fptr;
1045 fptr = (struct mrb_io *)mrb_data_get_ptr(mrb, io, &mrb_io_type);
1046 if (fptr == NULL || fptr->fd >= 0) {
1047 return mrb_false_value();
1050 return mrb_true_value();
1054 mrb_io_pid(mrb_state *mrb, mrb_value io)
1056 struct mrb_io *fptr;
1057 fptr = io_get_open_fptr(mrb, io);
1059 if (fptr->pid > 0) {
1060 return mrb_fixnum_value(fptr->pid);
1063 return mrb_nil_value();
1066 static struct timeval
1067 time2timeval(mrb_state *mrb, mrb_value time)
1069 struct timeval t = { 0, 0 };
1071 switch (mrb_type(time)) {
1073 t.tv_sec = (ftime_t)mrb_fixnum(time);
1077 #ifndef MRB_WITHOUT_FLOAT
1079 t.tv_sec = (ftime_t)mrb_float(time);
1080 t.tv_usec = (fsuseconds_t)((mrb_float(time) - t.tv_sec) * 1000000.0);
1085 mrb_raise(mrb, E_TYPE_ERROR, "wrong argument class");
1092 mrb_io_read_data_pending(mrb_state *mrb, mrb_value io)
1094 mrb_value buf = mrb_iv_get(mrb, io, mrb_intern_cstr(mrb, "@buf"));
1095 if (mrb_string_p(buf) && RSTRING_LEN(buf) > 0) {
1101 #if !defined(_WIN32) && !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE)
1103 mrb_io_s_pipe(mrb_state *mrb, mrb_value klass)
1105 mrb_value r = mrb_nil_value();
1106 mrb_value w = mrb_nil_value();
1107 struct mrb_io *fptr_r;
1108 struct mrb_io *fptr_w;
1111 if (mrb_pipe(mrb, pipes) == -1) {
1112 mrb_sys_fail(mrb, "pipe");
1115 r = mrb_obj_value(mrb_data_object_alloc(mrb, mrb_class_ptr(klass), NULL, &mrb_io_type));
1116 mrb_iv_set(mrb, r, mrb_intern_cstr(mrb, "@buf"), mrb_str_new_cstr(mrb, ""));
1117 fptr_r = mrb_io_alloc(mrb);
1118 fptr_r->fd = pipes[0];
1119 fptr_r->readable = 1;
1120 fptr_r->writable = 0;
1122 DATA_TYPE(r) = &mrb_io_type;
1123 DATA_PTR(r) = fptr_r;
1125 w = mrb_obj_value(mrb_data_object_alloc(mrb, mrb_class_ptr(klass), NULL, &mrb_io_type));
1126 mrb_iv_set(mrb, w, mrb_intern_cstr(mrb, "@buf"), mrb_str_new_cstr(mrb, ""));
1127 fptr_w = mrb_io_alloc(mrb);
1128 fptr_w->fd = pipes[1];
1129 fptr_w->readable = 0;
1130 fptr_w->writable = 1;
1132 DATA_TYPE(w) = &mrb_io_type;
1133 DATA_PTR(w) = fptr_w;
1135 return mrb_assoc_new(mrb, r, w);
1140 mrb_io_s_select(mrb_state *mrb, mrb_value klass)
1144 mrb_value read, read_io, write, except, timeout, list;
1145 struct timeval *tp, timerec;
1146 fd_set pset, rset, wset, eset;
1147 fd_set *rp, *wp, *ep;
1148 struct mrb_io *fptr;
1152 int interrupt_flag = 0;
1155 mrb_get_args(mrb, "*", &argv, &argc);
1157 if (argc < 1 || argc > 4) {
1158 mrb_argnum_error(mrb, argc, 1, 4);
1161 timeout = mrb_nil_value();
1162 except = mrb_nil_value();
1163 write = mrb_nil_value();
1172 if (mrb_nil_p(timeout)) {
1175 timerec = time2timeval(mrb, timeout);
1180 if (!mrb_nil_p(read)) {
1181 mrb_check_type(mrb, read, MRB_TT_ARRAY);
1184 for (i = 0; i < RARRAY_LEN(read); i++) {
1185 read_io = RARRAY_PTR(read)[i];
1186 fptr = io_get_open_fptr(mrb, read_io);
1187 if (fptr->fd >= FD_SETSIZE) continue;
1188 FD_SET(fptr->fd, rp);
1189 if (mrb_io_read_data_pending(mrb, read_io)) {
1191 FD_SET(fptr->fd, &pset);
1197 timerec.tv_sec = timerec.tv_usec = 0;
1204 if (!mrb_nil_p(write)) {
1205 mrb_check_type(mrb, write, MRB_TT_ARRAY);
1208 for (i = 0; i < RARRAY_LEN(write); i++) {
1209 fptr = io_get_open_fptr(mrb, RARRAY_PTR(write)[i]);
1210 if (fptr->fd >= FD_SETSIZE) continue;
1211 FD_SET(fptr->fd, wp);
1214 if (fptr->fd2 >= 0) {
1215 FD_SET(fptr->fd2, wp);
1216 if (max < fptr->fd2)
1224 if (!mrb_nil_p(except)) {
1225 mrb_check_type(mrb, except, MRB_TT_ARRAY);
1228 for (i = 0; i < RARRAY_LEN(except); i++) {
1229 fptr = io_get_open_fptr(mrb, RARRAY_PTR(except)[i]);
1230 if (fptr->fd >= FD_SETSIZE) continue;
1231 FD_SET(fptr->fd, ep);
1234 if (fptr->fd2 >= 0) {
1235 FD_SET(fptr->fd2, ep);
1236 if (max < fptr->fd2)
1247 n = select(max, rp, wp, ep, tp);
1250 mrb_sys_fail(mrb, "select failed");
1256 if (!pending && n == 0)
1257 return mrb_nil_value();
1259 result = mrb_ary_new_capa(mrb, 3);
1260 mrb_ary_push(mrb, result, rp? mrb_ary_new(mrb) : mrb_ary_new_capa(mrb, 0));
1261 mrb_ary_push(mrb, result, wp? mrb_ary_new(mrb) : mrb_ary_new_capa(mrb, 0));
1262 mrb_ary_push(mrb, result, ep? mrb_ary_new(mrb) : mrb_ary_new_capa(mrb, 0));
1264 if (interrupt_flag == 0) {
1266 list = RARRAY_PTR(result)[0];
1267 for (i = 0; i < RARRAY_LEN(read); i++) {
1268 fptr = io_get_open_fptr(mrb, RARRAY_PTR(read)[i]);
1269 if (FD_ISSET(fptr->fd, rp) ||
1270 FD_ISSET(fptr->fd, &pset)) {
1271 mrb_ary_push(mrb, list, RARRAY_PTR(read)[i]);
1277 list = RARRAY_PTR(result)[1];
1278 for (i = 0; i < RARRAY_LEN(write); i++) {
1279 fptr = io_get_open_fptr(mrb, RARRAY_PTR(write)[i]);
1280 if (FD_ISSET(fptr->fd, wp)) {
1281 mrb_ary_push(mrb, list, RARRAY_PTR(write)[i]);
1282 } else if (fptr->fd2 >= 0 && FD_ISSET(fptr->fd2, wp)) {
1283 mrb_ary_push(mrb, list, RARRAY_PTR(write)[i]);
1289 list = RARRAY_PTR(result)[2];
1290 for (i = 0; i < RARRAY_LEN(except); i++) {
1291 fptr = io_get_open_fptr(mrb, RARRAY_PTR(except)[i]);
1292 if (FD_ISSET(fptr->fd, ep)) {
1293 mrb_ary_push(mrb, list, RARRAY_PTR(except)[i]);
1294 } else if (fptr->fd2 >= 0 && FD_ISSET(fptr->fd2, ep)) {
1295 mrb_ary_push(mrb, list, RARRAY_PTR(except)[i]);
1305 mrb_io_fileno(mrb_state *mrb, mrb_value io)
1307 struct mrb_io *fptr;
1308 fptr = io_get_open_fptr(mrb, io);
1313 mrb_io_fileno_m(mrb_state *mrb, mrb_value io)
1315 int fd = mrb_io_fileno(mrb, io);
1316 return mrb_fixnum_value(fd);
1320 mrb_io_close_on_exec_p(mrb_state *mrb, mrb_value self)
1322 #if defined(F_GETFD) && defined(F_SETFD) && defined(FD_CLOEXEC)
1323 struct mrb_io *fptr;
1326 fptr = io_get_open_fptr(mrb, self);
1328 if (fptr->fd2 >= 0) {
1329 if ((ret = fcntl(fptr->fd2, F_GETFD)) == -1) mrb_sys_fail(mrb, "F_GETFD failed");
1330 if (!(ret & FD_CLOEXEC)) return mrb_false_value();
1333 if ((ret = fcntl(fptr->fd, F_GETFD)) == -1) mrb_sys_fail(mrb, "F_GETFD failed");
1334 if (!(ret & FD_CLOEXEC)) return mrb_false_value();
1335 return mrb_true_value();
1338 mrb_raise(mrb, E_NOTIMP_ERROR, "IO#close_on_exec? is not supported on the platform");
1339 return mrb_false_value();
1344 mrb_io_set_close_on_exec(mrb_state *mrb, mrb_value self)
1346 #if defined(F_GETFD) && defined(F_SETFD) && defined(FD_CLOEXEC)
1347 struct mrb_io *fptr;
1351 fptr = io_get_open_fptr(mrb, self);
1352 mrb_get_args(mrb, "b", &b);
1353 flag = b ? FD_CLOEXEC : 0;
1355 if (fptr->fd2 >= 0) {
1356 if ((ret = fcntl(fptr->fd2, F_GETFD)) == -1) mrb_sys_fail(mrb, "F_GETFD failed");
1357 if ((ret & FD_CLOEXEC) != flag) {
1358 ret = (ret & ~FD_CLOEXEC) | flag;
1359 ret = fcntl(fptr->fd2, F_SETFD, ret);
1361 if (ret == -1) mrb_sys_fail(mrb, "F_SETFD failed");
1365 if ((ret = fcntl(fptr->fd, F_GETFD)) == -1) mrb_sys_fail(mrb, "F_GETFD failed");
1366 if ((ret & FD_CLOEXEC) != flag) {
1367 ret = (ret & ~FD_CLOEXEC) | flag;
1368 ret = fcntl(fptr->fd, F_SETFD, ret);
1369 if (ret == -1) mrb_sys_fail(mrb, "F_SETFD failed");
1372 return mrb_bool_value(b);
1374 mrb_raise(mrb, E_NOTIMP_ERROR, "IO#close_on_exec= is not supported on the platform");
1375 return mrb_nil_value();
1380 mrb_io_set_sync(mrb_state *mrb, mrb_value self)
1382 struct mrb_io *fptr;
1385 fptr = io_get_open_fptr(mrb, self);
1386 mrb_get_args(mrb, "b", &b);
1388 return mrb_bool_value(b);
1392 mrb_io_sync(mrb_state *mrb, mrb_value self)
1394 struct mrb_io *fptr;
1395 fptr = io_get_open_fptr(mrb, self);
1396 return mrb_bool_value(fptr->sync);
1399 #ifndef MRB_WITH_IO_PREAD_PWRITE
1400 # define mrb_io_pread mrb_notimplement_m
1401 # define mrb_io_pwrite mrb_notimplement_m
1404 value2off(mrb_state *mrb, mrb_value offv)
1406 return (off_t)mrb_int(mrb, offv);
1411 * pread(maxlen, offset, outbuf = "") -> outbuf
1414 mrb_io_pread(mrb_state *mrb, mrb_value io)
1416 mrb_value buf = mrb_nil_value();
1420 mrb_get_args(mrb, "io|S!", &maxlen, &off, &buf);
1422 return mrb_io_sysread_common(mrb, pread, io, buf, maxlen, value2off(mrb, off));
1427 * pwrite(buffer, offset) -> wrote_bytes
1430 mrb_io_pwrite(mrb_state *mrb, mrb_value io)
1434 mrb_get_args(mrb, "So", &buf, &off);
1436 return mrb_io_syswrite_common(mrb, pwrite, io, buf, value2off(mrb, off));
1438 #endif /* MRB_WITH_IO_PREAD_PWRITE */
1441 io_bufread(mrb_state *mrb, mrb_value str, mrb_int len)
1449 mrb_str_modify(mrb, s);
1451 str2 = mrb_str_new(mrb, p, len);
1452 newlen = RSTR_LEN(s)-len;
1453 memmove(p, p+len, newlen);
1455 RSTR_SET_LEN(s, newlen);
1461 mrb_io_bufread(mrb_state *mrb, mrb_value self)
1466 mrb_get_args(mrb, "Si", &str, &len);
1467 return io_bufread(mrb, str, len);
1471 mrb_io_readchar(mrb_state *mrb, mrb_value self)
1475 #ifdef MRB_UTF8_STRING
1479 mrb_get_args(mrb, "S", &buf);
1480 mrb_assert(RSTRING_LEN(buf) > 0);
1481 mrb_assert(RSTRING_PTR(buf) != NULL);
1482 mrb_str_modify(mrb, RSTRING(buf));
1483 #ifdef MRB_UTF8_STRING
1484 c = RSTRING_PTR(buf)[0];
1486 len = mrb_utf8len(RSTRING_PTR(buf), RSTRING_END(buf));
1487 if (len == 1 && RSTRING_LEN(buf) < 4) { /* partial UTF-8 */
1488 mrb_int blen = RSTRING_LEN(buf);
1491 struct mrb_io *fptr = (struct mrb_io*)io_get_open_fptr(mrb, self);
1493 if (!fptr->readable) {
1494 mrb_raise(mrb, E_IO_ERROR, "not opened for reading");
1496 /* refill the buffer */
1497 mrb_str_resize(mrb, buf, 4096);
1498 n = read(fptr->fd, RSTRING_PTR(buf)+blen, 4096-blen);
1499 if (n < 0) mrb_sys_fail(mrb, "sysread failed");
1500 mrb_str_resize(mrb, buf, blen+n);
1502 len = mrb_utf8len(RSTRING_PTR(buf), RSTRING_END(buf));
1505 return io_bufread(mrb, buf, len);
1509 mrb_init_io(mrb_state *mrb)
1513 io = mrb_define_class(mrb, "IO", mrb->object_class);
1514 MRB_SET_INSTANCE_TT(io, MRB_TT_DATA);
1516 mrb_include_module(mrb, io, mrb_module_get(mrb, "Enumerable")); /* 15.2.20.3 */
1517 mrb_define_class_method(mrb, io, "_popen", mrb_io_s_popen, MRB_ARGS_ARG(1,2));
1518 mrb_define_class_method(mrb, io, "_sysclose", mrb_io_s_sysclose, MRB_ARGS_REQ(1));
1519 mrb_define_class_method(mrb, io, "for_fd", mrb_io_s_for_fd, MRB_ARGS_ARG(1,2));
1520 mrb_define_class_method(mrb, io, "select", mrb_io_s_select, MRB_ARGS_ARG(1,3));
1521 mrb_define_class_method(mrb, io, "sysopen", mrb_io_s_sysopen, MRB_ARGS_ARG(1,2));
1522 #if !defined(_WIN32) && !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE)
1523 mrb_define_class_method(mrb, io, "_pipe", mrb_io_s_pipe, MRB_ARGS_NONE());
1526 mrb_define_method(mrb, io, "initialize", mrb_io_initialize, MRB_ARGS_ARG(1,2)); /* 15.2.20.5.21 (x)*/
1527 mrb_define_method(mrb, io, "initialize_copy", mrb_io_initialize_copy, MRB_ARGS_REQ(1));
1528 mrb_define_method(mrb, io, "_check_readable", mrb_io_check_readable, MRB_ARGS_NONE());
1529 mrb_define_method(mrb, io, "isatty", mrb_io_isatty, MRB_ARGS_NONE());
1530 mrb_define_method(mrb, io, "sync", mrb_io_sync, MRB_ARGS_NONE());
1531 mrb_define_method(mrb, io, "sync=", mrb_io_set_sync, MRB_ARGS_REQ(1));
1532 mrb_define_method(mrb, io, "sysread", mrb_io_sysread, MRB_ARGS_ARG(1,1));
1533 mrb_define_method(mrb, io, "sysseek", mrb_io_sysseek, MRB_ARGS_ARG(1,1));
1534 mrb_define_method(mrb, io, "syswrite", mrb_io_syswrite, MRB_ARGS_REQ(1));
1535 mrb_define_method(mrb, io, "close", mrb_io_close, MRB_ARGS_NONE()); /* 15.2.20.5.1 */
1536 mrb_define_method(mrb, io, "close_write", mrb_io_close_write, MRB_ARGS_NONE());
1537 mrb_define_method(mrb, io, "close_on_exec=", mrb_io_set_close_on_exec, MRB_ARGS_REQ(1));
1538 mrb_define_method(mrb, io, "close_on_exec?", mrb_io_close_on_exec_p, MRB_ARGS_NONE());
1539 mrb_define_method(mrb, io, "closed?", mrb_io_closed, MRB_ARGS_NONE()); /* 15.2.20.5.2 */
1540 mrb_define_method(mrb, io, "pid", mrb_io_pid, MRB_ARGS_NONE()); /* 15.2.20.5.2 */
1541 mrb_define_method(mrb, io, "fileno", mrb_io_fileno_m, MRB_ARGS_NONE());
1542 mrb_define_method(mrb, io, "pread", mrb_io_pread, MRB_ARGS_ANY()); /* ruby 2.5 feature */
1543 mrb_define_method(mrb, io, "pwrite", mrb_io_pwrite, MRB_ARGS_ANY()); /* ruby 2.5 feature */
1545 mrb_define_method(mrb, io, "_readchar", mrb_io_readchar, MRB_ARGS_REQ(1));
1546 mrb_define_class_method(mrb, io, "_bufread", mrb_io_bufread, MRB_ARGS_REQ(2));