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io.h
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#ifndef RUBY_IO_H /*-*-C++-*-vi:se ft=cpp:*/ #define RUBY_IO_H 1 /** * @file * @author $Author$ * @date Fri Nov 12 16:47:09 JST 1993 * @copyright Copyright (C) 1993-2007 Yukihiro Matsumoto * @copyright This file is a part of the programming language Ruby. * Permission is hereby granted, to either redistribute and/or * modify this file, provided that the conditions mentioned in the * file COPYING are met. Consult the file for details. */ #include "ruby/internal/config.h" #include <stdio.h> #include "ruby/encoding.h" #if defined(HAVE_STDIO_EXT_H) #include <stdio_ext.h> #endif #include <errno.h> #if defined(HAVE_POLL) # ifdef _AIX # define reqevents events # define rtnevents revents # endif # include <poll.h> # ifdef _AIX # undef reqevents # undef rtnevents # undef events # undef revents # endif # define RB_WAITFD_IN POLLIN # define RB_WAITFD_PRI POLLPRI # define RB_WAITFD_OUT POLLOUT #else # define RB_WAITFD_IN 0x001 # define RB_WAITFD_PRI 0x002 # define RB_WAITFD_OUT 0x004 #endif typedef enum { RUBY_IO_READABLE = RB_WAITFD_IN, RUBY_IO_WRITABLE = RB_WAITFD_OUT, RUBY_IO_PRIORITY = RB_WAITFD_PRI, } rb_io_event_t; #include "ruby/internal/dllexport.h" RBIMPL_SYMBOL_EXPORT_BEGIN() PACKED_STRUCT_UNALIGNED(struct rb_io_buffer_t { char *ptr; /* off + len <= capa */ int off; int len; int capa; }); typedef struct rb_io_buffer_t rb_io_buffer_t; typedef struct rb_io_t { VALUE self; FILE *stdio_file; /* stdio ptr for read/write if available */ int fd; /* file descriptor */ int mode; /* mode flags: FMODE_XXXs */ rb_pid_t pid; /* child's pid (for pipes) */ int lineno; /* number of lines read */ VALUE pathv; /* pathname for file */ void (*finalize)(struct rb_io_t*,int); /* finalize proc */ rb_io_buffer_t wbuf, rbuf; VALUE tied_io_for_writing; /* * enc enc2 read action write action * NULL NULL force_encoding(default_external) write the byte sequence of str * e1 NULL force_encoding(e1) convert str.encoding to e1 * e1 e2 convert from e2 to e1 convert str.encoding to e2 */ struct rb_io_enc_t { rb_encoding *enc; rb_encoding *enc2; int ecflags; VALUE ecopts; } encs; rb_econv_t *readconv; rb_io_buffer_t cbuf; rb_econv_t *writeconv; VALUE writeconv_asciicompat; int writeconv_initialized; int writeconv_pre_ecflags; VALUE writeconv_pre_ecopts; VALUE write_lock; } rb_io_t; typedef struct rb_io_enc_t rb_io_enc_t; #define HAVE_RB_IO_T 1 #define FMODE_READABLE 0x00000001 #define FMODE_WRITABLE 0x00000002 #define FMODE_READWRITE (FMODE_READABLE|FMODE_WRITABLE) #define FMODE_BINMODE 0x00000004 #define FMODE_SYNC 0x00000008 #define FMODE_TTY 0x00000010 #define FMODE_DUPLEX 0x00000020 #define FMODE_APPEND 0x00000040 #define FMODE_CREATE 0x00000080 /* #define FMODE_NOREVLOOKUP 0x00000100 */ #define FMODE_EXCL 0x00000400 #define FMODE_TRUNC 0x00000800 #define FMODE_TEXTMODE 0x00001000 /* #define FMODE_PREP 0x00010000 */ #define FMODE_SETENC_BY_BOM 0x00100000 /* #define FMODE_UNIX 0x00200000 */ /* #define FMODE_INET 0x00400000 */ /* #define FMODE_INET6 0x00800000 */ #define RB_IO_POINTER(obj,fp) rb_io_check_closed((fp) = RFILE(rb_io_taint_check(obj))->fptr) #define GetOpenFile RB_IO_POINTER #define RB_IO_OPEN(obj, fp) do {\ (fp) = rb_io_make_open_file(obj);\ } while (0) #define MakeOpenFile RB_IO_OPEN rb_io_t *rb_io_make_open_file(VALUE obj); FILE *rb_io_stdio_file(rb_io_t *fptr); FILE *rb_fdopen(int, const char*); int rb_io_modestr_fmode(const char *modestr); int rb_io_modestr_oflags(const char *modestr); CONSTFUNC(int rb_io_oflags_fmode(int oflags)); void rb_io_check_writable(rb_io_t*); void rb_io_check_readable(rb_io_t*); void rb_io_check_char_readable(rb_io_t *fptr); void rb_io_check_byte_readable(rb_io_t *fptr); int rb_io_fptr_finalize(rb_io_t*); void rb_io_synchronized(rb_io_t*); void rb_io_check_initialized(rb_io_t*); void rb_io_check_closed(rb_io_t*); VALUE rb_io_get_io(VALUE io); VALUE rb_io_check_io(VALUE io); VALUE rb_io_get_write_io(VALUE io); VALUE rb_io_set_write_io(VALUE io, VALUE w); void rb_io_set_nonblock(rb_io_t *fptr); int rb_io_extract_encoding_option(VALUE opt, rb_encoding **enc_p, rb_encoding **enc2_p, int *fmode_p); 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); ssize_t rb_io_bufwrite(VALUE io, const void *buf, size_t size); int rb_io_wait_readable(int fd); int rb_io_wait_writable(int fd); int rb_wait_for_single_fd(int fd, int events, struct timeval *tv); VALUE rb_io_wait(VALUE io, VALUE events, VALUE timeout); /* compatibility for ruby 1.8 and older */ #define rb_io_mode_flags(modestr) [<"rb_io_mode_flags() is obsolete; use rb_io_modestr_fmode()">] #define rb_io_modenum_flags(oflags) [<"rb_io_modenum_flags() is obsolete; use rb_io_oflags_fmode()">] VALUE rb_io_taint_check(VALUE); NORETURN(void rb_eof_error(void)); void rb_io_read_check(rb_io_t*); int rb_io_read_pending(rb_io_t*); struct stat; VALUE rb_stat_new(const struct stat *); /* gc.c */ RBIMPL_SYMBOL_EXPORT_END() #endif /* RUBY_IO_H */