/**********************************************************************

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rubyio.h -

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$Author$

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created at: Fri Nov 12 16:47:09 JST 1993

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Copyright (C) 1993-2007 Yukihiro Matsumoto

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**********************************************************************/

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#ifndef RUBY_IO_H

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#define RUBY_IO_H 1

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#ifdef RUBY_INTERNAL_H

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#error "Include this file before internal.h"

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#endif

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#if defined(__cplusplus)

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extern "C" {

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#if 0

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} /* satisfy cc-mode */

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#endif

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#endif

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#include <stdio.h>

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#include "ruby/encoding.h"

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#if defined(HAVE_STDIO_EXT_H)

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#include <stdio_ext.h>

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#endif

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#include "ruby/config.h"

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#include <errno.h>

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#if defined(HAVE_POLL)

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# ifdef _AIX

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# define reqevents events

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# define rtnevents revents

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# endif

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# include <poll.h>

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# ifdef _AIX

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# undef reqevents

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# undef rtnevents

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# undef events

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# undef revents

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# endif

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# define RB_WAITFD_IN POLLIN

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# define RB_WAITFD_PRI POLLPRI

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# define RB_WAITFD_OUT POLLOUT

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#else

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# define RB_WAITFD_IN 0x001

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# define RB_WAITFD_PRI 0x002

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# define RB_WAITFD_OUT 0x004

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#endif

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RUBY_SYMBOL_EXPORT_BEGIN

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PACKED_STRUCT_UNALIGNED(struct rb_io_buffer_t {

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char *ptr; /* off + len <= capa */

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int off;

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int len;

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int capa;

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});

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typedef struct rb_io_buffer_t rb_io_buffer_t;

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typedef struct rb_io_t {

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FILE *stdio_file; /* stdio ptr for read/write if available */

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int fd; /* file descriptor */

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int mode; /* mode flags: FMODE_XXXs */

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rb_pid_t pid; /* child's pid (for pipes) */

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int lineno; /* number of lines read */

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VALUE pathv; /* pathname for file */

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void (*finalize)(struct rb_io_t*,int); /* finalize proc */

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rb_io_buffer_t wbuf, rbuf;

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VALUE tied_io_for_writing;

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/*

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* enc enc2 read action write action

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* NULL NULL force_encoding(default_external) write the byte sequence of str

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* e1 NULL force_encoding(e1) convert str.encoding to e1

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* e1 e2 convert from e2 to e1 convert str.encoding to e2

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*/

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struct rb_io_enc_t {

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rb_encoding *enc;

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rb_encoding *enc2;

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int ecflags;

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VALUE ecopts;

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} encs;

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rb_econv_t *readconv;

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rb_io_buffer_t cbuf;

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rb_econv_t *writeconv;

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VALUE writeconv_asciicompat;

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int writeconv_initialized;

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int writeconv_pre_ecflags;

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VALUE writeconv_pre_ecopts;

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VALUE write_lock;

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} rb_io_t;

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typedef struct rb_io_enc_t rb_io_enc_t;

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#define HAVE_RB_IO_T 1

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#define FMODE_READABLE 0x00000001

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#define FMODE_WRITABLE 0x00000002

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#define FMODE_READWRITE (FMODE_READABLE|FMODE_WRITABLE)

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#define FMODE_BINMODE 0x00000004

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#define FMODE_SYNC 0x00000008

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#define FMODE_TTY 0x00000010

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#define FMODE_DUPLEX 0x00000020

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#define FMODE_APPEND 0x00000040

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#define FMODE_CREATE 0x00000080

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/* #define FMODE_NOREVLOOKUP 0x00000100 */

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#define FMODE_EXCL 0x00000400

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#define FMODE_TRUNC 0x00000800

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#define FMODE_TEXTMODE 0x00001000

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/* #define FMODE_PREP 0x00010000 */

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#define FMODE_SETENC_BY_BOM 0x00100000

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/* #define FMODE_UNIX 0x00200000 */

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/* #define FMODE_INET 0x00400000 */

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/* #define FMODE_INET6 0x00800000 */

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#define GetOpenFile(obj,fp) rb_io_check_closed((fp) = RFILE(rb_io_taint_check(obj))->fptr)

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#define MakeOpenFile(obj, fp) do {\

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(fp) = rb_io_make_open_file(obj);\

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} while (0)

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rb_io_t *rb_io_make_open_file(VALUE obj);

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FILE *rb_io_stdio_file(rb_io_t *fptr);

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FILE *rb_fdopen(int, const char*);

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int rb_io_modestr_fmode(const char *modestr);

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int rb_io_modestr_oflags(const char *modestr);

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CONSTFUNC(int rb_io_oflags_fmode(int oflags));

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void rb_io_check_writable(rb_io_t*);

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void rb_io_check_readable(rb_io_t*);

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void rb_io_check_char_readable(rb_io_t *fptr);

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void rb_io_check_byte_readable(rb_io_t *fptr);

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int rb_io_fptr_finalize(rb_io_t*);

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void rb_io_synchronized(rb_io_t*);

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void rb_io_check_initialized(rb_io_t*);

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void rb_io_check_closed(rb_io_t*);

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VALUE rb_io_get_io(VALUE io);

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VALUE rb_io_check_io(VALUE io);

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VALUE rb_io_get_write_io(VALUE io);

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VALUE rb_io_set_write_io(VALUE io, VALUE w);

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int rb_io_wait_readable(int);

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int rb_io_wait_writable(int);

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int rb_wait_for_single_fd(int fd, int events, struct timeval *tv);

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void rb_io_set_nonblock(rb_io_t *fptr);

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int rb_io_extract_encoding_option(VALUE opt, rb_encoding **enc_p, rb_encoding **enc2_p, int *fmode_p);

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void rb_io_extract_modeenc(VALUE *vmode_p, VALUE *vperm_p, VALUE opthash, int *oflags_p, int *fmode_p, rb_io_enc_t *convconfig_p);

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ssize_t rb_io_bufwrite(VALUE io, const void *buf, size_t size);

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/* compatibility for ruby 1.8 and older */

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#define rb_io_mode_flags(modestr) [<"rb_io_mode_flags() is obsolete; use rb_io_modestr_fmode()">]

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#define rb_io_modenum_flags(oflags) [<"rb_io_modenum_flags() is obsolete; use rb_io_oflags_fmode()">]

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VALUE rb_io_taint_check(VALUE);

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NORETURN(void rb_eof_error(void));

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void rb_io_read_check(rb_io_t*);

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int rb_io_read_pending(rb_io_t*);

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struct stat;

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VALUE rb_stat_new(const struct stat *);

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/* gc.c */

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RUBY_SYMBOL_EXPORT_END

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#if defined(__cplusplus)

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#if 0

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{ /* satisfy cc-mode */

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#endif

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} /* extern "C" { */

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#endif

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#endif /* RUBY_IO_H */

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