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Diffstat (limited to 'ruby_1_8_6/io.c')
| -rw-r--r-- | ruby_1_8_6/io.c | 5941 |
1 files changed, 5941 insertions, 0 deletions
diff --git a/ruby_1_8_6/io.c b/ruby_1_8_6/io.c new file mode 100644 index 0000000000..8f8dfcdf2e --- /dev/null +++ b/ruby_1_8_6/io.c @@ -0,0 +1,5941 @@ +/********************************************************************** + + io.c - + + $Author$ + $Date$ + created at: Fri Oct 15 18:08:59 JST 1993 + + Copyright (C) 1993-2003 Yukihiro Matsumoto + Copyright (C) 2000 Network Applied Communication Laboratory, Inc. + Copyright (C) 2000 Information-technology Promotion Agency, Japan + +**********************************************************************/ + +#if defined(__VMS) +#define _XOPEN_SOURCE +#define _POSIX_C_SOURCE 2 +#endif + +#include "ruby.h" +#include "rubyio.h" +#include "rubysig.h" +#include "env.h" +#include <ctype.h> +#include <errno.h> + +#if defined(MSDOS) || defined(__BOW__) || defined(__CYGWIN__) || defined(_WIN32) || defined(__human68k__) || defined(__EMX__) || defined(__BEOS__) +# define NO_SAFE_RENAME +#endif + +#if defined(MSDOS) || defined(__CYGWIN__) || defined(_WIN32) +# define NO_LONG_FNAME +#endif + +#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) || defined(sun) || defined(_nec_ews) +# define USE_SETVBUF +#endif + +#ifdef __QNXNTO__ +#include "unix.h" +#endif + +#include <sys/types.h> +#if defined(HAVE_SYS_IOCTL_H) && !defined(DJGPP) && !defined(_WIN32) && !defined(__human68k__) +#include <sys/ioctl.h> +#endif +#if defined(HAVE_FCNTL_H) || defined(_WIN32) +#include <fcntl.h> +#elif defined(HAVE_SYS_FCNTL_H) +#include <sys/fcntl.h> +#endif + +#if !HAVE_OFF_T && !defined(off_t) +# define off_t long +#endif +#if !HAVE_FSEEKO && !defined(fseeko) +# define fseeko fseek +#endif +#if !HAVE_FTELLO && !defined(ftello) +# define ftello ftell +#endif + +#include <sys/stat.h> + +/* EMX has sys/param.h, but.. */ +#if defined(HAVE_SYS_PARAM_H) && !(defined(__EMX__) || defined(__HIUX_MPP__)) +# include <sys/param.h> +#endif + +#if !defined NOFILE +# define NOFILE 64 +#endif + +#ifdef HAVE_UNISTD_H +#ifdef HAVE_SYSCALL_H +#include <syscall.h> +#elif defined HAVE_SYS_SYSCALL_H +#include <sys/syscall.h> +#endif + +#include <unistd.h> +#endif + +extern void Init_File _((void)); + +#ifdef __BEOS__ +# ifndef NOFILE +# define NOFILE (OPEN_MAX) +# endif +#include <net/socket.h> +#endif + +#include "util.h" + +#ifndef O_ACCMODE +#define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR) +#endif + +#if SIZEOF_OFF_T > SIZEOF_LONG && !defined(HAVE_LONG_LONG) +# error off_t is bigger than long, but you have no long long... +#endif + +#ifndef PIPE_BUF +# ifdef _POSIX_PIPE_BUF +# define PIPE_BUF _POSIX_PIPE_BUF +# else +# define PIPE_BUF 512 /* is this ok? */ +# endif +#endif + +VALUE rb_cIO; +VALUE rb_eEOFError; +VALUE rb_eIOError; + +VALUE rb_stdin, rb_stdout, rb_stderr; +VALUE rb_deferr; /* rescue VIM plugin */ +static VALUE orig_stdout, orig_stderr; + +VALUE rb_output_fs; +VALUE rb_rs; +VALUE rb_output_rs; +VALUE rb_default_rs; + +static VALUE argf; + +static ID id_write, id_read, id_getc; + +extern char *ruby_inplace_mode; + +struct timeval rb_time_interval _((VALUE)); + +static VALUE filename, current_file; +static int gets_lineno; +static int init_p = 0, next_p = 0; +static VALUE lineno = INT2FIX(0); + +#ifdef _STDIO_USES_IOSTREAM /* GNU libc */ +# ifdef _IO_fpos_t +# define READ_DATA_PENDING(fp) ((fp)->_IO_read_ptr != (fp)->_IO_read_end) +# define READ_DATA_PENDING_COUNT(fp) ((fp)->_IO_read_end - (fp)->_IO_read_ptr) +# define READ_DATA_PENDING_PTR(fp) ((fp)->_IO_read_ptr) +# else +# define READ_DATA_PENDING(fp) ((fp)->_gptr < (fp)->_egptr) +# define READ_DATA_PENDING_COUNT(fp) ((fp)->_egptr - (fp)->_gptr) +# define READ_DATA_PENDING_PTR(fp) ((fp)->_gptr) +# endif +#elif defined(_LP64) && (defined(__sun__) || defined(__sun)) +typedef struct _FILE64 { + unsigned char *_ptr; /* next character from/to here in buffer */ + unsigned char *_base; /* the buffer */ + unsigned char *_end; /* the end of the buffer */ + ssize_t _cnt; /* number of available characters in buffer */ + int _file; /* UNIX System file descriptor */ + unsigned int _flag; /* the state of the stream */ + char __fill[80]; /* filler to bring size to 128 bytes */ +} FILE64; +# define READ_DATA_PENDING(fp) (((FILE64*)(fp))->_cnt > 0) +# define READ_DATA_PENDING_COUNT(fp) (((FILE64*)(fp))->_cnt) +# define READ_DATA_PENDING_PTR(fp) ((char *)((FILE64*)(fp))->_ptr) +#elif defined(FILE_COUNT) +# define READ_DATA_PENDING(fp) ((fp)->FILE_COUNT > 0) +# define READ_DATA_PENDING_COUNT(fp) ((fp)->FILE_COUNT) +#elif defined(FILE_READEND) +# define READ_DATA_PENDING(fp) ((fp)->FILE_READPTR < (fp)->FILE_READEND) +# define READ_DATA_PENDING_COUNT(fp) ((fp)->FILE_READEND - (fp)->FILE_READPTR) +#elif defined(__BEOS__) +# define READ_DATA_PENDING(fp) (fp->_state._eof == 0) +#elif defined(__VMS) +# define READ_DATA_PENDING_COUNT(fp) ((unsigned int)(*(fp))->_cnt) +# define READ_DATA_PENDING(fp) (((unsigned int)(*(fp))->_cnt) > 0) +# define READ_DATA_BUFFERED(fp) 0 +#elif defined(__DragonFly__) +/* FILE is an incomplete struct type since DragonFly BSD 1.4.0 */ +# define READ_DATA_PENDING(fp) (((struct __FILE_public *)(fp))->_r > 0) +# define READ_DATA_PENDING_COUNT(fp) (((struct __FILE_public *)(fp))->_r) +#else +/* requires systems own version of the ReadDataPending() */ +extern int ReadDataPending(); +# define READ_DATA_PENDING(fp) (!feof(fp)) +# define READ_DATA_BUFFERED(fp) 0 +#endif +#ifndef READ_DATA_BUFFERED +# define READ_DATA_BUFFERED(fp) READ_DATA_PENDING(fp) +#endif + +#ifndef READ_DATA_PENDING_PTR +# ifdef FILE_READPTR +# define READ_DATA_PENDING_PTR(fp) ((char *)(fp)->FILE_READPTR) +# endif +#endif + +#if defined __DJGPP__ +# undef READ_DATA_PENDING_COUNT +# undef READ_DATA_PENDING_PTR +#endif + +#define READ_CHECK(fp) do {\ + if (!READ_DATA_PENDING(fp)) {\ + rb_thread_wait_fd(fileno(fp));\ + rb_io_check_closed(fptr);\ + }\ +} while(0) + +void +rb_eof_error() +{ + rb_raise(rb_eEOFError, "end of file reached"); +} + +VALUE +rb_io_taint_check(io) + VALUE io; +{ + if (!OBJ_TAINTED(io) && rb_safe_level() >= 4) + rb_raise(rb_eSecurityError, "Insecure: operation on untainted IO"); + rb_check_frozen(io); + return io; +} + +void +rb_io_check_initialized(fptr) + OpenFile *fptr; +{ + if (!fptr) { + rb_raise(rb_eIOError, "uninitialized stream"); + } +} + +void +rb_io_check_closed(fptr) + OpenFile *fptr; +{ + rb_io_check_initialized(fptr); + if (!fptr->f && !fptr->f2) { + rb_raise(rb_eIOError, "closed stream"); + } +} + +static void io_fflush _((FILE *, OpenFile *)); + +static OpenFile * +flush_before_seek(fptr) + OpenFile *fptr; +{ + if (fptr->mode & FMODE_WBUF) { + io_fflush(GetWriteFile(fptr), fptr); + } + return fptr; +} + +#define io_seek(fptr, ofs, whence) fseeko(flush_before_seek(fptr)->f, ofs, whence) +#define io_tell(fptr) ftello(flush_before_seek(fptr)->f) + +#ifndef SEEK_CUR +# define SEEK_SET 0 +# define SEEK_CUR 1 +# define SEEK_END 2 +#endif + +#define FMODE_SYNCWRITE (FMODE_SYNC|FMODE_WRITABLE) + +void +rb_io_check_readable(fptr) + OpenFile *fptr; +{ + rb_io_check_closed(fptr); + if (!(fptr->mode & FMODE_READABLE)) { + rb_raise(rb_eIOError, "not opened for reading"); + } +#ifdef NEED_IO_SEEK_BETWEEN_RW + if (((fptr->mode & FMODE_WBUF) || + (fptr->mode & (FMODE_SYNCWRITE|FMODE_RBUF)) == FMODE_SYNCWRITE) && + !feof(fptr->f) && + !fptr->f2) { + io_seek(fptr, 0, SEEK_CUR); + } +#endif + fptr->mode |= FMODE_RBUF; +} + +void +rb_io_check_writable(fptr) + OpenFile *fptr; +{ + rb_io_check_closed(fptr); + if (!(fptr->mode & FMODE_WRITABLE)) { + rb_raise(rb_eIOError, "not opened for writing"); + } + if ((fptr->mode & FMODE_RBUF) && !feof(fptr->f) && !fptr->f2) { + io_seek(fptr, 0, SEEK_CUR); + } + if (!fptr->f2) { + fptr->mode &= ~FMODE_RBUF; + } +} + +int +rb_read_pending(fp) + FILE *fp; +{ + return READ_DATA_PENDING(fp); +} + +void +rb_read_check(fp) + FILE *fp; +{ + if (!READ_DATA_PENDING(fp)) { + rb_thread_wait_fd(fileno(fp)); + } +} + +static int +ruby_dup(orig) + int orig; +{ + int fd; + + fd = dup(orig); + if (fd < 0) { + if (errno == EMFILE || errno == ENFILE || errno == ENOMEM) { + rb_gc(); + fd = dup(orig); + } + if (fd < 0) { + rb_sys_fail(0); + } + } + return fd; +} + +static VALUE io_alloc _((VALUE)); +static VALUE +io_alloc(klass) + VALUE klass; +{ + NEWOBJ(io, struct RFile); + OBJSETUP(io, klass, T_FILE); + + io->fptr = 0; + + return (VALUE)io; +} + +static void +io_fflush(f, fptr) + FILE *f; + OpenFile *fptr; +{ + int n; + + if (!rb_thread_fd_writable(fileno(f))) { + rb_io_check_closed(fptr); + } + for (;;) { + TRAP_BEG; + n = fflush(f); + TRAP_END; + if (n != EOF) break; + if (!rb_io_wait_writable(fileno(f))) + rb_sys_fail(fptr->path); + } + fptr->mode &= ~FMODE_WBUF; +} + +int +rb_io_wait_readable(f) + int f; +{ + fd_set rfds; + + switch (errno) { + case EINTR: +#if defined(ERESTART) + case ERESTART: +#endif + rb_thread_wait_fd(f); + return Qtrue; + + case EAGAIN: +#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN + case EWOULDBLOCK: +#endif + FD_ZERO(&rfds); + FD_SET(f, &rfds); + rb_thread_select(f + 1, &rfds, NULL, NULL, NULL); + return Qtrue; + + default: + return Qfalse; + } +} + +int +rb_io_wait_writable(f) + int f; +{ + fd_set wfds; + + switch (errno) { + case EINTR: +#if defined(ERESTART) + case ERESTART: +#endif + rb_thread_fd_writable(f); + return Qtrue; + + case EAGAIN: +#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN + case EWOULDBLOCK: +#endif + FD_ZERO(&wfds); + FD_SET(f, &wfds); + rb_thread_select(f + 1, NULL, &wfds, NULL, NULL); + return Qtrue; + + default: + return Qfalse; + } +} + +#ifndef S_ISREG +# define S_ISREG(m) ((m & S_IFMT) == S_IFREG) +#endif + +static int +wsplit_p(OpenFile *fptr) +{ + FILE *f = GetWriteFile(fptr); + int r; + if (!(fptr->mode & FMODE_WSPLIT_INITIALIZED)) { + struct stat buf; + if (fstat(fileno(f), &buf) == 0 && + !S_ISREG(buf.st_mode) +#if defined(HAVE_FCNTL) && defined(F_GETFL) && defined(O_NONBLOCK) + && (r = fcntl(fileno(f), F_GETFL)) != -1 && + !(r & O_NONBLOCK) +#endif + ) { + fptr->mode |= FMODE_WSPLIT; + } + fptr->mode |= FMODE_WSPLIT_INITIALIZED; + } + return fptr->mode & FMODE_WSPLIT; +} + +/* writing functions */ +static long +io_fwrite(str, fptr) + VALUE str; + OpenFile *fptr; +{ + long len, n, r, l, offset = 0; + FILE *f = GetWriteFile(fptr); + + len = RSTRING(str)->len; + if ((n = len) <= 0) return n; + if (fptr->mode & FMODE_SYNC) { + io_fflush(f, fptr); + if (!rb_thread_fd_writable(fileno(f))) { + rb_io_check_closed(fptr); + } + retry: + l = n; + if (PIPE_BUF < l && + !rb_thread_critical && + !rb_thread_alone() && + wsplit_p(fptr)) { + l = PIPE_BUF; + } + TRAP_BEG; + r = write(fileno(f), RSTRING(str)->ptr+offset, l); + TRAP_END; + if (r == n) return len; + if (0 <= r) { + offset += r; + n -= r; + errno = EAGAIN; + } + if (rb_io_wait_writable(fileno(f))) { + rb_io_check_closed(fptr); + if (offset < RSTRING(str)->len) + goto retry; + } + return -1L; + } +#if defined(__human68k__) || defined(__vms) + do { + if (fputc(RSTRING(str)->ptr[offset++], f) == EOF) { + if (ferror(f)) return -1L; + break; + } + } while (--n > 0); +#else + while (errno = 0, offset += (r = fwrite(RSTRING(str)->ptr+offset, 1, n, f)), (n -= r) > 0) { + if (ferror(f) +#if defined __BORLANDC__ + || errno +#endif + ) { +#ifdef __hpux + if (!errno) errno = EAGAIN; +#elif defined(_WIN32) && !defined(__BORLANDC__) + /* workaround for MSVCRT's bug */ + if (!errno) { + if (GetLastError() == ERROR_NO_DATA) + errno = EPIPE; + else + errno = EBADF; + } +#endif + if (rb_io_wait_writable(fileno(f))) { + rb_io_check_closed(fptr); + clearerr(f); + if (offset < RSTRING(str)->len) + continue; + } + return -1L; + } + } +#endif + return len - n; +} + +long +rb_io_fwrite(ptr, len, f) + const char *ptr; + long len; + FILE *f; +{ + OpenFile of; + + of.f = f; + of.f2 = NULL; + of.mode = FMODE_WRITABLE; + of.path = NULL; + return io_fwrite(rb_str_new(ptr, len), &of); +} + +/* + * call-seq: + * ios.write(string) => integer + * + * Writes the given string to <em>ios</em>. The stream must be opened + * for writing. If the argument is not a string, it will be converted + * to a string using <code>to_s</code>. Returns the number of bytes + * written. + * + * count = $stdout.write( "This is a test\n" ) + * puts "That was #{count} bytes of data" + * + * <em>produces:</em> + * + * This is a test + * That was 15 bytes of data + */ + +static VALUE +io_write(io, str) + VALUE io, str; +{ + OpenFile *fptr; + long n; + + rb_secure(4); + if (TYPE(str) != T_STRING) + str = rb_obj_as_string(str); + + if (TYPE(io) != T_FILE) { + /* port is not IO, call write method for it. */ + return rb_funcall(io, id_write, 1, str); + } + if (RSTRING(str)->len == 0) return INT2FIX(0); + + GetOpenFile(io, fptr); + rb_io_check_writable(fptr); + + n = io_fwrite(str, fptr); + if (n == -1L) rb_sys_fail(fptr->path); + if (!(fptr->mode & FMODE_SYNC)) { + fptr->mode |= FMODE_WBUF; + } + + return LONG2FIX(n); +} + +VALUE +rb_io_write(io, str) + VALUE io, str; +{ + return rb_funcall(io, id_write, 1, str); +} + +/* + * call-seq: + * ios << obj => ios + * + * String Output---Writes <i>obj</i> to <em>ios</em>. + * <i>obj</i> will be converted to a string using + * <code>to_s</code>. + * + * $stdout << "Hello " << "world!\n" + * + * <em>produces:</em> + * + * Hello world! + */ + +VALUE +rb_io_addstr(io, str) + VALUE io, str; +{ + rb_io_write(io, str); + return io; +} + +/* + * call-seq: + * ios.flush => ios + * + * Flushes any buffered data within <em>ios</em> to the underlying + * operating system (note that this is Ruby internal buffering only; + * the OS may buffer the data as well). + * + * $stdout.print "no newline" + * $stdout.flush + * + * <em>produces:</em> + * + * no newline + */ + +static VALUE +rb_io_flush(io) + VALUE io; +{ + OpenFile *fptr; + FILE *f; + + GetOpenFile(io, fptr); + rb_io_check_writable(fptr); + f = GetWriteFile(fptr); + + io_fflush(f, fptr); + + return io; +} + +/* + * call-seq: + * ios.pos => integer + * ios.tell => integer + * + * Returns the current offset (in bytes) of <em>ios</em>. + * + * f = File.new("testfile") + * f.pos #=> 0 + * f.gets #=> "This is line one\n" + * f.pos #=> 17 + */ + +static VALUE +rb_io_tell(io) + VALUE io; +{ + OpenFile *fptr; + off_t pos; + + GetOpenFile(io, fptr); + pos = io_tell(fptr); + if (pos < 0) rb_sys_fail(fptr->path); + return OFFT2NUM(pos); +} + +static VALUE +rb_io_seek(io, offset, whence) + VALUE io, offset; + int whence; +{ + OpenFile *fptr; + off_t pos; + + pos = NUM2OFFT(offset); + GetOpenFile(io, fptr); + pos = io_seek(fptr, pos, whence); + if (pos < 0) rb_sys_fail(fptr->path); + clearerr(fptr->f); + + return INT2FIX(0); +} + +/* + * call-seq: + * ios.seek(amount, whence=SEEK_SET) -> 0 + * + * Seeks to a given offset <i>anInteger</i> in the stream according to + * the value of <i>whence</i>: + * + * IO::SEEK_CUR | Seeks to _amount_ plus current position + * --------------+---------------------------------------------------- + * IO::SEEK_END | Seeks to _amount_ plus end of stream (you probably + * | want a negative value for _amount_) + * --------------+---------------------------------------------------- + * IO::SEEK_SET | Seeks to the absolute location given by _amount_ + * + * Example: + * + * f = File.new("testfile") + * f.seek(-13, IO::SEEK_END) #=> 0 + * f.readline #=> "And so on...\n" + */ + +static VALUE +rb_io_seek_m(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE offset, ptrname; + int whence = SEEK_SET; + + if (rb_scan_args(argc, argv, "11", &offset, &ptrname) == 2) { + whence = NUM2INT(ptrname); + } + + return rb_io_seek(io, offset, whence); +} + +/* + * call-seq: + * ios.pos = integer => integer + * + * Seeks to the given position (in bytes) in <em>ios</em>. + * + * f = File.new("testfile") + * f.pos = 17 + * f.gets #=> "This is line two\n" + */ + +static VALUE +rb_io_set_pos(io, offset) + VALUE io, offset; +{ + OpenFile *fptr; + off_t pos; + + pos = NUM2OFFT(offset); + GetOpenFile(io, fptr); + pos = io_seek(fptr, pos, SEEK_SET); + if (pos != 0) rb_sys_fail(fptr->path); + clearerr(fptr->f); + + return OFFT2NUM(pos); +} + +/* + * call-seq: + * ios.rewind => 0 + * + * Positions <em>ios</em> to the beginning of input, resetting + * <code>lineno</code> to zero. + * + * f = File.new("testfile") + * f.readline #=> "This is line one\n" + * f.rewind #=> 0 + * f.lineno #=> 0 + * f.readline #=> "This is line one\n" + */ + +static VALUE +rb_io_rewind(io) + VALUE io; +{ + OpenFile *fptr; + + GetOpenFile(io, fptr); + if (io_seek(fptr, 0L, 0) != 0) rb_sys_fail(fptr->path); + clearerr(fptr->f); + if (io == current_file) { + gets_lineno -= fptr->lineno; + } + fptr->lineno = 0; + + return INT2FIX(0); +} + +/* + * call-seq: + * ios.eof => true or false + * ios.eof? => true or false + * + * Returns true if <em>ios</em> is at end of file that means + * there are no more data to read. + * The stream must be opened for reading or an <code>IOError</code> will be + * raised. + * + * f = File.new("testfile") + * dummy = f.readlines + * f.eof #=> true + * + * If <em>ios</em> is a stream such as pipe or socket, <code>IO#eof?</code> + * blocks until the other end sends some data or closes it. + * + * r, w = IO.pipe + * Thread.new { sleep 1; w.close } + * r.eof? #=> true after 1 second blocking + * + * r, w = IO.pipe + * Thread.new { sleep 1; w.puts "a" } + * r.eof? #=> false after 1 second blocking + * + * r, w = IO.pipe + * r.eof? # blocks forever + * + * Note that <code>IO#eof?</code> reads data to a input buffer. + * So <code>IO#sysread</code> doesn't work with <code>IO#eof?</code>. + */ + +VALUE +rb_io_eof(io) + VALUE io; +{ + OpenFile *fptr; + int ch; + + GetOpenFile(io, fptr); + rb_io_check_readable(fptr); + + if (feof(fptr->f)) return Qtrue; + if (READ_DATA_PENDING(fptr->f)) return Qfalse; + READ_CHECK(fptr->f); + clearerr(fptr->f); + TRAP_BEG; + ch = getc(fptr->f); + TRAP_END; + + if (ch != EOF) { + ungetc(ch, fptr->f); + return Qfalse; + } + rb_io_check_closed(fptr); + clearerr(fptr->f); + return Qtrue; +} + +/* + * call-seq: + * ios.sync => true or false + * + * Returns the current ``sync mode'' of <em>ios</em>. When sync mode is + * true, all output is immediately flushed to the underlying operating + * system and is not buffered by Ruby internally. See also + * <code>IO#fsync</code>. + * + * f = File.new("testfile") + * f.sync #=> false + */ + +static VALUE +rb_io_sync(io) + VALUE io; +{ + OpenFile *fptr; + + GetOpenFile(io, fptr); + return (fptr->mode & FMODE_SYNC) ? Qtrue : Qfalse; +} + +/* + * call-seq: + * ios.sync = boolean => boolean + * + * Sets the ``sync mode'' to <code>true</code> or <code>false</code>. + * When sync mode is true, all output is immediately flushed to the + * underlying operating system and is not buffered internally. Returns + * the new state. See also <code>IO#fsync</code>. + * + * f = File.new("testfile") + * f.sync = true + * + * <em>(produces no output)</em> + */ + +static VALUE +rb_io_set_sync(io, mode) + VALUE io, mode; +{ + OpenFile *fptr; + + GetOpenFile(io, fptr); + if (RTEST(mode)) { + fptr->mode |= FMODE_SYNC; + } + else { + fptr->mode &= ~FMODE_SYNC; + } + return mode; +} + +/* + * call-seq: + * ios.fsync => 0 or nil + * + * Immediately writes all buffered data in <em>ios</em> to disk. + * Returns <code>nil</code> if the underlying operating system does not + * support <em>fsync(2)</em>. Note that <code>fsync</code> differs from + * using <code>IO#sync=</code>. The latter ensures that data is flushed + * from Ruby's buffers, but doesn't not guarantee that the underlying + * operating system actually writes it to disk. + */ + +static VALUE +rb_io_fsync(io) + VALUE io; +{ +#ifdef HAVE_FSYNC + OpenFile *fptr; + FILE *f; + + GetOpenFile(io, fptr); + f = GetWriteFile(fptr); + + io_fflush(f, fptr); + if (fsync(fileno(f)) < 0) + rb_sys_fail(fptr->path); + return INT2FIX(0); +#else + rb_notimplement(); + return Qnil; /* not reached */ +#endif +} + +/* + * call-seq: + * ios.fileno => fixnum + * ios.to_i => fixnum + * + * Returns an integer representing the numeric file descriptor for + * <em>ios</em>. + * + * $stdin.fileno #=> 0 + * $stdout.fileno #=> 1 + */ + +static VALUE +rb_io_fileno(io) + VALUE io; +{ + OpenFile *fptr; + int fd; + + GetOpenFile(io, fptr); + fd = fileno(fptr->f); + return INT2FIX(fd); +} + +/* + * call-seq: + * ios.pid => fixnum + * + * Returns the process ID of a child process associated with + * <em>ios</em>. This will be set by <code>IO::popen</code>. + * + * pipe = IO.popen("-") + * if pipe + * $stderr.puts "In parent, child pid is #{pipe.pid}" + * else + * $stderr.puts "In child, pid is #{$$}" + * end + * + * <em>produces:</em> + * + * In child, pid is 26209 + * In parent, child pid is 26209 + */ + +static VALUE +rb_io_pid(io) + VALUE io; +{ + OpenFile *fptr; + + GetOpenFile(io, fptr); + if (!fptr->pid) + return Qnil; + return INT2FIX(fptr->pid); +} + +/* + * call-seq: + * ios.inspect => string + * + * Return a string describing this IO object. + */ + +static VALUE +rb_io_inspect(obj) + VALUE obj; +{ + OpenFile *fptr; + char *buf, *cname, *st = ""; + long len; + + fptr = RFILE(rb_io_taint_check(obj))->fptr; + if (!fptr || !fptr->path) return rb_any_to_s(obj); + cname = rb_obj_classname(obj); + len = strlen(cname) + strlen(fptr->path) + 5; + if (!(fptr->f || fptr->f2)) { + st = " (closed)"; + len += 9; + } + buf = ALLOCA_N(char, len); + snprintf(buf, len, "#<%s:%s%s>", cname, fptr->path, st); + return rb_str_new2(buf); +} + +/* + * call-seq: + * ios.to_io -> ios + * + * Returns <em>ios</em>. + */ + +static VALUE +rb_io_to_io(io) + VALUE io; +{ + return io; +} + +/* reading functions */ +static long +read_buffered_data(ptr, len, f) + char *ptr; + long len; + FILE *f; +{ + long n; + +#ifdef READ_DATA_PENDING_COUNT + n = READ_DATA_PENDING_COUNT(f); + if (n <= 0) return 0; + if (n > len) n = len; + return fread(ptr, 1, n, f); +#else + int c; + + for (n = 0; n < len && READ_DATA_PENDING(f) && (c = getc(f)) != EOF; ++n) { + *ptr++ = c; + } + return n; +#endif +} + +static long +io_fread(ptr, len, fptr) + char *ptr; + long len; + OpenFile *fptr; +{ + long n = len; + int c; + int saved_errno; + + while (n > 0) { + c = read_buffered_data(ptr, n, fptr->f); + if (c < 0) goto eof; + if (c > 0) { + ptr += c; + if ((n -= c) <= 0) break; + } + rb_thread_wait_fd(fileno(fptr->f)); + rb_io_check_closed(fptr); + clearerr(fptr->f); + TRAP_BEG; + c = getc(fptr->f); + TRAP_END; + if (c == EOF) { + eof: + if (ferror(fptr->f)) { + switch (errno) { + case EINTR: +#if defined(ERESTART) + case ERESTART: +#endif + clearerr(fptr->f); + continue; + case EAGAIN: +#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN + case EWOULDBLOCK: +#endif + if (len > n) { + clearerr(fptr->f); + } + saved_errno = errno; + rb_warning("nonblocking IO#read is obsolete; use IO#readpartial or IO#sysread"); + errno = saved_errno; + } + if (len == n) return 0; + } + break; + } + *ptr++ = c; + n--; + } + return len - n; +} + +long +rb_io_fread(ptr, len, f) + char *ptr; + long len; + FILE *f; +{ + OpenFile of; + + of.f = f; + of.f2 = NULL; + return io_fread(ptr, len, &of); +} + +#define SMALLBUF 100 + +static long +remain_size(fptr) + OpenFile *fptr; +{ + struct stat st; + off_t siz = BUFSIZ; + off_t pos; + + if (feof(fptr->f)) return 0; + if (fstat(fileno(fptr->f), &st) == 0 && S_ISREG(st.st_mode) +#ifdef __BEOS__ + && (st.st_dev > 3) +#endif + ) + { + pos = io_tell(fptr); + if (st.st_size >= pos && pos >= 0) { + siz = st.st_size - pos + 1; + if (siz > LONG_MAX) { + rb_raise(rb_eIOError, "file too big for single read"); + } + } + } + return (long)siz; +} + +static VALUE +read_all(fptr, siz, str) + OpenFile *fptr; + long siz; + VALUE str; +{ + long bytes = 0; + long n; + + if (siz == 0) siz = BUFSIZ; + if (NIL_P(str)) { + str = rb_str_new(0, siz); + } + else { + rb_str_resize(str, siz); + } + for (;;) { + rb_str_locktmp(str); + READ_CHECK(fptr->f); + n = io_fread(RSTRING(str)->ptr+bytes, siz-bytes, fptr); + rb_str_unlocktmp(str); + if (n == 0 && bytes == 0) { + if (!fptr->f) break; + if (feof(fptr->f)) break; + if (!ferror(fptr->f)) break; + rb_sys_fail(fptr->path); + } + bytes += n; + if (bytes < siz) break; + siz += BUFSIZ; + rb_str_resize(str, siz); + } + if (bytes != siz) rb_str_resize(str, bytes); + OBJ_TAINT(str); + + return str; +} + +void rb_io_set_nonblock(OpenFile *fptr) +{ + int flags; +#ifdef F_GETFL + flags = fcntl(fileno(fptr->f), F_GETFL); + if (flags == -1) { + rb_sys_fail(fptr->path); + } +#else + flags = 0; +#endif + if ((flags & O_NONBLOCK) == 0) { + flags |= O_NONBLOCK; + if (fcntl(fileno(fptr->f), F_SETFL, flags) == -1) { + rb_sys_fail(fptr->path); + } + } + if (fptr->f2) { +#ifdef F_GETFL + flags = fcntl(fileno(fptr->f2), F_GETFL); + if (flags == -1) { + rb_sys_fail(fptr->path); + } +#else + flags = 0; +#endif + if ((flags & O_NONBLOCK) == 0) { + flags |= O_NONBLOCK; + if (fcntl(fileno(fptr->f2), F_SETFL, flags) == -1) { + rb_sys_fail(fptr->path); + } + } + } +} + +static VALUE +io_getpartial(int argc, VALUE *argv, VALUE io, int nonblock) +{ + OpenFile *fptr; + VALUE length, str; + long n, len; + + rb_scan_args(argc, argv, "11", &length, &str); + + if ((len = NUM2LONG(length)) < 0) { + rb_raise(rb_eArgError, "negative length %ld given", len); + } + + if (NIL_P(str)) { + str = rb_str_new(0, len); + } + else { + StringValue(str); + rb_str_modify(str); + rb_str_resize(str, len); + } + OBJ_TAINT(str); + + GetOpenFile(io, fptr); + rb_io_check_readable(fptr); + + if (len == 0) + return str; + + if (!nonblock) { + READ_CHECK(fptr->f); + } + if (RSTRING(str)->len != len) { + modified: + rb_raise(rb_eRuntimeError, "buffer string modified"); + } + n = read_buffered_data(RSTRING(str)->ptr, len, fptr->f); + if (n <= 0) { + again: + if (RSTRING(str)->len != len) goto modified; + if (nonblock) { + rb_io_set_nonblock(fptr); + n = read(fileno(fptr->f), RSTRING(str)->ptr, len); + } + else { + TRAP_BEG; + n = read(fileno(fptr->f), RSTRING(str)->ptr, len); + TRAP_END; + } + if (n < 0) { + if (!nonblock && rb_io_wait_readable(fileno(fptr->f))) + goto again; + rb_sys_fail(fptr->path); + } + } + rb_str_resize(str, n); + + if (n == 0) + return Qnil; + else + return str; +} + +/* + * call-seq: + * ios.readpartial(maxlen) => string + * ios.readpartial(maxlen, outbuf) => outbuf + * + * Reads at most <i>maxlen</i> bytes from the I/O stream. + * It blocks only if <em>ios</em> has no data immediately available. + * It doesn't block if some data available. + * If the optional <i>outbuf</i> argument is present, + * it must reference a String, which will receive the data. + * It raises <code>EOFError</code> on end of file. + * + * readpartial is designed for streams such as pipe, socket, tty, etc. + * It blocks only when no data immediately available. + * This means that it blocks only when following all conditions hold. + * * the buffer in the IO object is empty. + * * the content of the stream is empty. + * * the stream is not reached to EOF. + * + * When readpartial blocks, it waits data or EOF on the stream. + * If some data is reached, readpartial returns with the data. + * If EOF is reached, readpartial raises EOFError. + * + * When readpartial doesn't blocks, it returns or raises immediately. + * If the buffer is not empty, it returns the data in the buffer. + * Otherwise if the stream has some content, + * it returns the data in the stream. + * Otherwise if the stream is reached to EOF, it raises EOFError. + * + * r, w = IO.pipe # buffer pipe content + * w << "abc" # "" "abc". + * r.readpartial(4096) #=> "abc" "" "" + * r.readpartial(4096) # blocks because buffer and pipe is empty. + * + * r, w = IO.pipe # buffer pipe content + * w << "abc" # "" "abc" + * w.close # "" "abc" EOF + * r.readpartial(4096) #=> "abc" "" EOF + * r.readpartial(4096) # raises EOFError + * + * r, w = IO.pipe # buffer pipe content + * w << "abc\ndef\n" # "" "abc\ndef\n" + * r.gets #=> "abc\n" "def\n" "" + * w << "ghi\n" # "def\n" "ghi\n" + * r.readpartial(4096) #=> "def\n" "" "ghi\n" + * r.readpartial(4096) #=> "ghi\n" "" "" + * + * Note that readpartial behaves similar to sysread. + * The differences are: + * * If the buffer is not empty, read from the buffer instead of "sysread for buffered IO (IOError)". + * * It doesn't cause Errno::EAGAIN and Errno::EINTR. When readpartial meets EAGAIN and EINTR by read system call, readpartial retry the system call. + * + * The later means that readpartial is nonblocking-flag insensitive. + * It blocks on the situation IO#sysread causes Errno::EAGAIN as if the fd is blocking mode. + * + */ + +static VALUE +io_readpartial(int argc, VALUE *argv, VALUE io) +{ + VALUE ret; + + ret = io_getpartial(argc, argv, io, 0); + if (NIL_P(ret)) + rb_eof_error(); + else + return ret; +} + +/* + * call-seq: + * ios.read_nonblock(maxlen) => string + * ios.read_nonblock(maxlen, outbuf) => outbuf + * + * Reads at most <i>maxlen</i> bytes from <em>ios</em> using + * read(2) system call after O_NONBLOCK is set for + * the underlying file descriptor. + * + * If the optional <i>outbuf</i> argument is present, + * it must reference a String, which will receive the data. + * + * read_nonblock just calls read(2). + * It causes all errors read(2) causes: EAGAIN, EINTR, etc. + * The caller should care such errors. + * + * read_nonblock causes EOFError on EOF. + * + * If the read buffer is not empty, + * read_nonblock reads from the buffer like readpartial. + * In this case, read(2) is not called. + * + */ + +static VALUE +io_read_nonblock(int argc, VALUE *argv, VALUE io) +{ + VALUE ret; + + ret = io_getpartial(argc, argv, io, 1); + if (NIL_P(ret)) + rb_eof_error(); + else + return ret; +} + +/* + * call-seq: + * ios.write_nonblock(string) => integer + * + * Writes the given string to <em>ios</em> using + * write(2) system call after O_NONBLOCK is set for + * the underlying file descriptor. + * + * write_nonblock just calls write(2). + * It causes all errors write(2) causes: EAGAIN, EINTR, etc. + * The result may also be smaller than string.length (partial write). + * The caller should care such errors and partial write. + * + */ + +static VALUE +rb_io_write_nonblock(VALUE io, VALUE str) +{ + OpenFile *fptr; + FILE *f; + long n; + + rb_secure(4); + if (TYPE(str) != T_STRING) + str = rb_obj_as_string(str); + + GetOpenFile(io, fptr); + rb_io_check_writable(fptr); + + f = GetWriteFile(fptr); + + rb_io_set_nonblock(fptr); + n = write(fileno(f), RSTRING(str)->ptr, RSTRING(str)->len); + + if (n == -1) rb_sys_fail(fptr->path); + + return LONG2FIX(n); +} + +/* + * call-seq: + * ios.read([length [, buffer]]) => string, buffer, or nil + * + * Reads at most <i>length</i> bytes from the I/O stream, or to the + * end of file if <i>length</i> is omitted or is <code>nil</code>. + * <i>length</i> must be a non-negative integer or nil. + * If the optional <i>buffer</i> argument is present, it must reference + * a String, which will receive the data. + * + * At end of file, it returns <code>nil</code> or <code>""</code> + * depend on <i>length</i>. + * <code><i>ios</i>.read()</code> and + * <code><i>ios</i>.read(nil)</code> returns <code>""</code>. + * <code><i>ios</i>.read(<i>positive-integer</i>)</code> returns nil. + * + * f = File.new("testfile") + * f.read(16) #=> "This is line one" + */ + +static VALUE +io_read(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + OpenFile *fptr; + long n, len; + VALUE length, str; + + rb_scan_args(argc, argv, "02", &length, &str); + + if (NIL_P(length)) { + if (!NIL_P(str)) StringValue(str); + GetOpenFile(io, fptr); + rb_io_check_readable(fptr); + return read_all(fptr, remain_size(fptr), str); + } + len = NUM2LONG(length); + if (len < 0) { + rb_raise(rb_eArgError, "negative length %ld given", len); + } + + if (NIL_P(str)) { + str = rb_tainted_str_new(0, len); + } + else { + StringValue(str); + rb_str_modify(str); + rb_str_resize(str,len); + } + + GetOpenFile(io, fptr); + rb_io_check_readable(fptr); + if (feof(fptr->f)) return Qnil; + if (len == 0) return str; + + rb_str_locktmp(str); + READ_CHECK(fptr->f); + if (RSTRING(str)->len != len) { + rb_raise(rb_eRuntimeError, "buffer string modified"); + } + n = io_fread(RSTRING(str)->ptr, len, fptr); + rb_str_unlocktmp(str); + if (n == 0) { + if (!fptr->f) return Qnil; + if (feof(fptr->f)) { + rb_str_resize(str, 0); + return Qnil; + } + if (len > 0) rb_sys_fail(fptr->path); + } + rb_str_resize(str, n); + RSTRING(str)->len = n; + RSTRING(str)->ptr[n] = '\0'; + OBJ_TAINT(str); + + return str; +} + +static int +appendline(fptr, delim, strp) + OpenFile *fptr; + int delim; + VALUE *strp; +{ + FILE *f = fptr->f; + VALUE str = *strp; + int c = EOF; +#ifndef READ_DATA_PENDING_PTR + char buf[8192]; + char *bp = buf, *bpe = buf + sizeof buf - 3; + int update = Qfalse; +#endif + + do { +#ifdef READ_DATA_PENDING_PTR + long pending = READ_DATA_PENDING_COUNT(f); + if (pending > 0) { + const char *p = READ_DATA_PENDING_PTR(f); + const char *e = memchr(p, delim, pending); + long last = 0, len = (c != EOF); + if (e) pending = e - p + 1; + len += pending; + if (!NIL_P(str)) { + last = RSTRING(str)->len; + rb_str_resize(str, last + len); + } + else { + *strp = str = rb_str_buf_new(len); + RSTRING(str)->len = len; + RSTRING(str)->ptr[len] = '\0'; + } + if (c != EOF) { + RSTRING(str)->ptr[last++] = c; + } + fread(RSTRING(str)->ptr + last, 1, pending, f); /* must not fail */ + if (e) return delim; + } + else if (c != EOF) { + if (!NIL_P(str)) { + char ch = c; + rb_str_buf_cat(str, &ch, 1); + } + else { + *strp = str = rb_str_buf_new(1); + RSTRING(str)->ptr[RSTRING(str)->len++] = c; + } + } + rb_thread_wait_fd(fileno(f)); + rb_io_check_closed(fptr); +#else + READ_CHECK(f); +#endif + clearerr(f); + TRAP_BEG; + c = getc(f); + TRAP_END; + if (c == EOF) { + if (ferror(f)) { + clearerr(f); + if (!rb_io_wait_readable(fileno(f))) + rb_sys_fail(fptr->path); + continue; + } +#ifdef READ_DATA_PENDING_PTR + return c; +#endif + } +#ifndef READ_DATA_PENDING_PTR + if (c == EOF || (*bp++ = c) == delim || bp == bpe) { + int cnt = bp - buf; + + if (cnt > 0) { + if (!NIL_P(str)) + rb_str_cat(str, buf, cnt); + else + *strp = str = rb_str_new(buf, cnt); + } + if (c == EOF) { + if (update) + return (int)RSTRING(str)->ptr[RSTRING(str)->len-1]; + return c; + } + bp = buf; + } + update = Qtrue; +#endif + } while (c != delim); + +#ifdef READ_DATA_PENDING_PTR + { + char ch = c; + if (!NIL_P(str)) { + rb_str_cat(str, &ch, 1); + } + else { + *strp = str = rb_str_new(&ch, 1); + } + } +#endif + + return c; +} + +static inline int +swallow(fptr, term) + OpenFile *fptr; + int term; +{ + FILE *f = fptr->f; + int c; + + do { +#ifdef READ_DATA_PENDING_PTR + long cnt; + while ((cnt = READ_DATA_PENDING_COUNT(f)) > 0) { + char buf[1024]; + const char *p = READ_DATA_PENDING_PTR(f); + int i; + if (cnt > sizeof buf) cnt = sizeof buf; + if (*p != term) return Qtrue; + i = cnt; + while (--i && *++p == term); + if (!fread(buf, 1, cnt - i, f)) /* must not fail */ + rb_sys_fail(fptr->path); + } + rb_thread_wait_fd(fileno(f)); + rb_io_check_closed(fptr); +#else + READ_CHECK(f); +#endif + clearerr(f); + TRAP_BEG; + c = getc(f); + TRAP_END; + if (c != term) { + ungetc(c, f); + return Qtrue; + } + } while (c != EOF); + return Qfalse; +} + +static VALUE +rb_io_getline_fast(fptr, delim) + OpenFile *fptr; + unsigned char delim; +{ + VALUE str = Qnil; + int c; + + while ((c = appendline(fptr, delim, &str)) != EOF && c != delim); + + if (!NIL_P(str)) { + fptr->lineno++; + lineno = INT2FIX(fptr->lineno); + OBJ_TAINT(str); + } + + return str; +} + +static int +rscheck(rsptr, rslen, rs) + char *rsptr; + long rslen; + VALUE rs; +{ + if (RSTRING(rs)->ptr != rsptr && RSTRING(rs)->len != rslen) + rb_raise(rb_eRuntimeError, "rs modified"); + return 1; +} + +static VALUE rb_io_getline(VALUE rs, VALUE io); + +static VALUE +rb_io_getline(rs, io) + VALUE rs, io; +{ + VALUE str = Qnil; + OpenFile *fptr; + + GetOpenFile(io, fptr); + rb_io_check_readable(fptr); + if (NIL_P(rs)) { + str = read_all(fptr, 0, Qnil); + if (RSTRING(str)->len == 0) return Qnil; + } + else if (rs == rb_default_rs) { + return rb_io_getline_fast(fptr, '\n'); + } + else { + int c, newline; + char *rsptr; + long rslen; + int rspara = 0; + + rslen = RSTRING(rs)->len; + if (rslen == 0) { + rsptr = "\n\n"; + rslen = 2; + rspara = 1; + swallow(fptr, '\n'); + } + else if (rslen == 1) { + return rb_io_getline_fast(fptr, (unsigned char)RSTRING(rs)->ptr[0]); + } + else { + rsptr = RSTRING(rs)->ptr; + } + newline = rsptr[rslen - 1]; + + while ((c = appendline(fptr, newline, &str)) != EOF && + (c != newline || RSTRING(str)->len < rslen || + (rspara || rscheck(rsptr,rslen,rs), 0) || + memcmp(RSTRING(str)->ptr+RSTRING(str)->len-rslen,rsptr,rslen))); + + if (rspara) { + if (c != EOF) { + swallow(fptr, '\n'); + } + } + } + + if (!NIL_P(str)) { + fptr->lineno++; + lineno = INT2FIX(fptr->lineno); + OBJ_TAINT(str); + } + + return str; +} + +VALUE +rb_io_gets(io) + VALUE io; +{ + OpenFile *fptr; + + GetOpenFile(io, fptr); + rb_io_check_readable(fptr); + return rb_io_getline_fast(fptr, '\n'); +} + +/* + * call-seq: + * ios.gets(sep_string=$/) => string or nil + * + * Reads the next ``line'' from the I/O stream; lines are separated by + * <i>sep_string</i>. A separator of <code>nil</code> reads the entire + * contents, and a zero-length separator reads the input a paragraph at + * a time (two successive newlines in the input separate paragraphs). + * The stream must be opened for reading or an <code>IOError</code> + * will be raised. The line read in will be returned and also assigned + * to <code>$_</code>. Returns <code>nil</code> if called at end of + * file. + * + * File.new("testfile").gets #=> "This is line one\n" + * $_ #=> "This is line one\n" + */ + +static VALUE +rb_io_gets_m(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE rs, str; + + if (argc == 0) { + rs = rb_rs; + } + else { + rb_scan_args(argc, argv, "1", &rs); + if (!NIL_P(rs)) StringValue(rs); + } + str = rb_io_getline(rs, io); + rb_lastline_set(str); + + return str; +} + +/* + * call-seq: + * ios.lineno => integer + * + * Returns the current line number in <em>ios</em>. The stream must be + * opened for reading. <code>lineno</code> counts the number of times + * <code>gets</code> is called, rather than the number of newlines + * encountered. The two values will differ if <code>gets</code> is + * called with a separator other than newline. See also the + * <code>$.</code> variable. + * + * f = File.new("testfile") + * f.lineno #=> 0 + * f.gets #=> "This is line one\n" + * f.lineno #=> 1 + * f.gets #=> "This is line two\n" + * f.lineno #=> 2 + */ + +static VALUE +rb_io_lineno(io) + VALUE io; +{ + OpenFile *fptr; + + GetOpenFile(io, fptr); + rb_io_check_readable(fptr); + return INT2NUM(fptr->lineno); +} + +/* + * call-seq: + * ios.lineno = integer => integer + * + * Manually sets the current line number to the given value. + * <code>$.</code> is updated only on the next read. + * + * f = File.new("testfile") + * f.gets #=> "This is line one\n" + * $. #=> 1 + * f.lineno = 1000 + * f.lineno #=> 1000 + * $. # lineno of last read #=> 1 + * f.gets #=> "This is line two\n" + * $. # lineno of last read #=> 1001 + */ + +static VALUE +rb_io_set_lineno(io, lineno) + VALUE io, lineno; +{ + OpenFile *fptr; + + GetOpenFile(io, fptr); + rb_io_check_readable(fptr); + fptr->lineno = NUM2INT(lineno); + return lineno; +} + +static void +lineno_setter(val, id, var) + VALUE val; + ID id; + VALUE *var; +{ + gets_lineno = NUM2INT(val); + *var = INT2FIX(gets_lineno); +} + +static VALUE +argf_set_lineno(argf, val) + VALUE argf, val; +{ + gets_lineno = NUM2INT(val); + lineno = INT2FIX(gets_lineno); + return Qnil; +} + +static VALUE +argf_lineno() +{ + return lineno; +} + +/* + * call-seq: + * ios.readline(sep_string=$/) => string + * + * Reads a line as with <code>IO#gets</code>, but raises an + * <code>EOFError</code> on end of file. + */ + +static VALUE +rb_io_readline(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE line = rb_io_gets_m(argc, argv, io); + + if (NIL_P(line)) { + rb_eof_error(); + } + return line; +} + +/* + * call-seq: + * ios.readlines(sep_string=$/) => array + * + * Reads all of the lines in <em>ios</em>, and returns them in + * <i>anArray</i>. Lines are separated by the optional + * <i>sep_string</i>. If <i>sep_string</i> is <code>nil</code>, the + * rest of the stream is returned as a single record. + * The stream must be opened for reading or an + * <code>IOError</code> will be raised. + * + * f = File.new("testfile") + * f.readlines[0] #=> "This is line one\n" + */ + +static VALUE +rb_io_readlines(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE line, ary; + VALUE rs; + + if (argc == 0) { + rs = rb_rs; + } + else { + rb_scan_args(argc, argv, "1", &rs); + if (!NIL_P(rs)) StringValue(rs); + } + ary = rb_ary_new(); + while (!NIL_P(line = rb_io_getline(rs, io))) { + rb_ary_push(ary, line); + } + return ary; +} + +/* + * call-seq: + * ios.each(sep_string=$/) {|line| block } => ios + * ios.each_line(sep_string=$/) {|line| block } => ios + * + * Executes the block for every line in <em>ios</em>, where lines are + * separated by <i>sep_string</i>. <em>ios</em> must be opened for + * reading or an <code>IOError</code> will be raised. + * + * f = File.new("testfile") + * f.each {|line| puts "#{f.lineno}: #{line}" } + * + * <em>produces:</em> + * + * 1: This is line one + * 2: This is line two + * 3: This is line three + * 4: And so on... + */ + +static VALUE +rb_io_each_line(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE str; + VALUE rs; + + if (argc == 0) { + rs = rb_rs; + } + else { + rb_scan_args(argc, argv, "1", &rs); + if (!NIL_P(rs)) StringValue(rs); + } + while (!NIL_P(str = rb_io_getline(rs, io))) { + rb_yield(str); + } + return io; +} + +/* + * call-seq: + * ios.each_byte {|byte| block } => nil + * + * Calls the given block once for each byte (0..255) in <em>ios</em>, + * passing the byte as an argument. The stream must be opened for + * reading or an <code>IOError</code> will be raised. + * + * f = File.new("testfile") + * checksum = 0 + * f.each_byte {|x| checksum ^= x } #=> #<File:testfile> + * checksum #=> 12 + */ + +static VALUE +rb_io_each_byte(io) + VALUE io; +{ + OpenFile *fptr; + FILE *f; + int c; + + GetOpenFile(io, fptr); + + for (;;) { + rb_io_check_readable(fptr); + f = fptr->f; + READ_CHECK(f); + clearerr(f); + TRAP_BEG; + c = getc(f); + TRAP_END; + if (c == EOF) { + if (ferror(f)) { + clearerr(f); + if (!rb_io_wait_readable(fileno(f))) + rb_sys_fail(fptr->path); + continue; + } + break; + } + rb_yield(INT2FIX(c & 0xff)); + } + if (ferror(f)) rb_sys_fail(fptr->path); + return io; +} + +/* + * call-seq: + * ios.getc => fixnum or nil + * + * Gets the next 8-bit byte (0..255) from <em>ios</em>. Returns + * <code>nil</code> if called at end of file. + * + * f = File.new("testfile") + * f.getc #=> 84 + * f.getc #=> 104 + */ + +VALUE +rb_io_getc(io) + VALUE io; +{ + OpenFile *fptr; + FILE *f; + int c; + + GetOpenFile(io, fptr); + rb_io_check_readable(fptr); + f = fptr->f; + + retry: + READ_CHECK(f); + clearerr(f); + TRAP_BEG; + c = getc(f); + TRAP_END; + + if (c == EOF) { + if (ferror(f)) { + clearerr(f); + if (!rb_io_wait_readable(fileno(f))) + rb_sys_fail(fptr->path); + goto retry; + } + return Qnil; + } + return INT2FIX(c & 0xff); +} + +int +rb_getc(f) + FILE *f; +{ + int c; + + if (!READ_DATA_PENDING(f)) { + rb_thread_wait_fd(fileno(f)); + } + clearerr(f); + TRAP_BEG; + c = getc(f); + TRAP_END; + + return c; +} + +/* + * call-seq: + * ios.readchar => fixnum + * + * Reads a character as with <code>IO#getc</code>, but raises an + * <code>EOFError</code> on end of file. + */ + +static VALUE +rb_io_readchar(io) + VALUE io; +{ + VALUE c = rb_io_getc(io); + + if (NIL_P(c)) { + rb_eof_error(); + } + return c; +} + +/* + * call-seq: + * ios.ungetc(integer) => nil + * + * Pushes back one character (passed as a parameter) onto <em>ios</em>, + * such that a subsequent buffered read will return it. Only one character + * may be pushed back before a subsequent read operation (that is, + * you will be able to read only the last of several characters that have been pushed + * back). Has no effect with unbuffered reads (such as <code>IO#sysread</code>). + * + * f = File.new("testfile") #=> #<File:testfile> + * c = f.getc #=> 84 + * f.ungetc(c) #=> nil + * f.getc #=> 84 + */ + +VALUE +rb_io_ungetc(io, c) + VALUE io, c; +{ + OpenFile *fptr; + int cc = NUM2INT(c); + + GetOpenFile(io, fptr); + if (!(fptr->mode & FMODE_RBUF)) + rb_raise(rb_eIOError, "unread stream"); + rb_io_check_readable(fptr); + + if (ungetc(cc, fptr->f) == EOF && cc != EOF) { + rb_raise(rb_eIOError, "ungetc failed"); + } + return Qnil; +} + +/* + * call-seq: + * ios.isatty => true or false + * ios.tty? => true or false + * + * Returns <code>true</code> if <em>ios</em> is associated with a + * terminal device (tty), <code>false</code> otherwise. + * + * File.new("testfile").isatty #=> false + * File.new("/dev/tty").isatty #=> true + */ + +static VALUE +rb_io_isatty(io) + VALUE io; +{ + OpenFile *fptr; + + GetOpenFile(io, fptr); + if (isatty(fileno(fptr->f)) == 0) + return Qfalse; + return Qtrue; +} + +static void +fptr_finalize(fptr, noraise) + OpenFile *fptr; + int noraise; +{ + int n1 = 0, n2 = 0, f1, f2 = -1; + + if (fptr->f2) { + f2 = fileno(fptr->f2); + while (n2 = 0, fflush(fptr->f2) < 0) { + n2 = errno; + if (!rb_io_wait_writable(f2)) { + break; + } + if (!fptr->f2) break; + } + if (fclose(fptr->f2) < 0 && n2 == 0) { + n2 = errno; + } + fptr->f2 = 0; + } + if (fptr->f) { + f1 = fileno(fptr->f); + if ((f2 == -1) && (fptr->mode & FMODE_WBUF)) { + while (n1 = 0, fflush(fptr->f) < 0) { + n1 = errno; + if (!rb_io_wait_writable(f1)) break; + if (!fptr->f) break; + } + } + if (fclose(fptr->f) < 0 && n1 == 0) { + n1 = errno; + } + fptr->f = 0; + if (n1 == EBADF && f1 == f2) { + n1 = 0; + } + } + if (!noraise && (n1 || n2)) { + errno = (n1 ? n1 : n2); + rb_sys_fail(fptr->path); + } +} + +static void +rb_io_fptr_cleanup(fptr, noraise) + OpenFile *fptr; + int noraise; +{ + if (fptr->finalize) { + (*fptr->finalize)(fptr, noraise); + } + else { + fptr_finalize(fptr, noraise); + } +} + +void +rb_io_fptr_finalize(fptr) + OpenFile *fptr; +{ + if (!fptr) return; + if (fptr->path) { + free(fptr->path); + } + if (!fptr->f && !fptr->f2) return; + if (fileno(fptr->f) < 3) return; + + rb_io_fptr_cleanup(fptr, Qtrue); +} + +VALUE +rb_io_close(io) + VALUE io; +{ + OpenFile *fptr; + int fd, fd2; + + fptr = RFILE(io)->fptr; + if (!fptr) return Qnil; + if (fptr->f2) { + fd2 = fileno(fptr->f2); + } + else { + if (!fptr->f) return Qnil; + fd2 = -1; + } + + fd = fileno(fptr->f); + rb_io_fptr_cleanup(fptr, Qfalse); + rb_thread_fd_close(fd); + if (fd2 >= 0) rb_thread_fd_close(fd2); + + if (fptr->pid) { + rb_syswait(fptr->pid); + fptr->pid = 0; + } + + return Qnil; +} + +/* + * call-seq: + * ios.close => nil + * + * Closes <em>ios</em> and flushes any pending writes to the operating + * system. The stream is unavailable for any further data operations; + * an <code>IOError</code> is raised if such an attempt is made. I/O + * streams are automatically closed when they are claimed by the + * garbage collector. + * + * If <em>ios</em> is opened by <code>IO.popen</code>, + * <code>close</code> sets <code>$?</code>. + */ + +static VALUE +rb_io_close_m(io) + VALUE io; +{ + if (rb_safe_level() >= 4 && !OBJ_TAINTED(io)) { + rb_raise(rb_eSecurityError, "Insecure: can't close"); + } + rb_io_check_closed(RFILE(io)->fptr); + rb_io_close(io); + return Qnil; +} + +static VALUE +io_call_close(io) + VALUE io; +{ + return rb_funcall(io, rb_intern("close"), 0, 0); +} + +static VALUE +io_close(io) + VALUE io; +{ + return rb_rescue(io_call_close, io, 0, 0); +} + +/* + * call-seq: + * ios.closed? => true or false + * + * Returns <code>true</code> if <em>ios</em> is completely closed (for + * duplex streams, both reader and writer), <code>false</code> + * otherwise. + * + * f = File.new("testfile") + * f.close #=> nil + * f.closed? #=> true + * f = IO.popen("/bin/sh","r+") + * f.close_write #=> nil + * f.closed? #=> false + * f.close_read #=> nil + * f.closed? #=> true + */ + +static VALUE +rb_io_closed(io) + VALUE io; +{ + OpenFile *fptr; + + fptr = RFILE(io)->fptr; + rb_io_check_initialized(fptr); + return (fptr->f || fptr->f2)?Qfalse:Qtrue; +} + +/* + * call-seq: + * ios.close_read => nil + * + * Closes the read end of a duplex I/O stream (i.e., one that contains + * both a read and a write stream, such as a pipe). Will raise an + * <code>IOError</code> if the stream is not duplexed. + * + * f = IO.popen("/bin/sh","r+") + * f.close_read + * f.readlines + * + * <em>produces:</em> + * + * prog.rb:3:in `readlines': not opened for reading (IOError) + * from prog.rb:3 + */ + +static VALUE +rb_io_close_read(io) + VALUE io; +{ + OpenFile *fptr; + int n; + + if (rb_safe_level() >= 4 && !OBJ_TAINTED(io)) { + rb_raise(rb_eSecurityError, "Insecure: can't close"); + } + GetOpenFile(io, fptr); + if (fptr->f2 == 0 && (fptr->mode & FMODE_WRITABLE)) { + rb_raise(rb_eIOError, "closing non-duplex IO for reading"); + } + if (fptr->f2 == 0) { + return rb_io_close(io); + } + n = fclose(fptr->f); + fptr->mode &= ~FMODE_READABLE; + fptr->f = fptr->f2; + fptr->f2 = 0; + if (n != 0) rb_sys_fail(fptr->path); + + return Qnil; +} + +/* + * call-seq: + * ios.close_write => nil + * + * Closes the write end of a duplex I/O stream (i.e., one that contains + * both a read and a write stream, such as a pipe). Will raise an + * <code>IOError</code> if the stream is not duplexed. + * + * f = IO.popen("/bin/sh","r+") + * f.close_write + * f.print "nowhere" + * + * <em>produces:</em> + * + * prog.rb:3:in `write': not opened for writing (IOError) + * from prog.rb:3:in `print' + * from prog.rb:3 + */ + +static VALUE +rb_io_close_write(io) + VALUE io; +{ + OpenFile *fptr; + int n; + + if (rb_safe_level() >= 4 && !OBJ_TAINTED(io)) { + rb_raise(rb_eSecurityError, "Insecure: can't close"); + } + GetOpenFile(io, fptr); + if (fptr->f2 == 0 && (fptr->mode & FMODE_READABLE)) { + rb_raise(rb_eIOError, "closing non-duplex IO for writing"); + } + if (fptr->f2 == 0) { + return rb_io_close(io); + } + n = fclose(fptr->f2); + fptr->f2 = 0; + fptr->mode &= ~FMODE_WRITABLE; + if (n != 0) rb_sys_fail(fptr->path); + + return Qnil; +} + +/* + * call-seq: + * ios.sysseek(offset, whence=SEEK_SET) => integer + * + * Seeks to a given <i>offset</i> in the stream according to the value + * of <i>whence</i> (see <code>IO#seek</code> for values of + * <i>whence</i>). Returns the new offset into the file. + * + * f = File.new("testfile") + * f.sysseek(-13, IO::SEEK_END) #=> 53 + * f.sysread(10) #=> "And so on." + */ + +static VALUE +rb_io_sysseek(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE offset, ptrname; + int whence = SEEK_SET; + OpenFile *fptr; + off_t pos; + + if (rb_scan_args(argc, argv, "11", &offset, &ptrname) == 2) { + whence = NUM2INT(ptrname); + } + pos = NUM2OFFT(offset); + GetOpenFile(io, fptr); + if ((fptr->mode & FMODE_READABLE) && READ_DATA_BUFFERED(fptr->f)) { + rb_raise(rb_eIOError, "sysseek for buffered IO"); + } + if ((fptr->mode & FMODE_WRITABLE) && (fptr->mode & FMODE_WBUF)) { + rb_warn("sysseek for buffered IO"); + } + pos = lseek(fileno(fptr->f), pos, whence); + if (pos == -1) rb_sys_fail(fptr->path); + clearerr(fptr->f); + + return OFFT2NUM(pos); +} + +/* + * call-seq: + * ios.syswrite(string) => integer + * + * Writes the given string to <em>ios</em> using a low-level write. + * Returns the number of bytes written. Do not mix with other methods + * that write to <em>ios</em> or you may get unpredictable results. + * Raises <code>SystemCallError</code> on error. + * + * f = File.new("out", "w") + * f.syswrite("ABCDEF") #=> 6 + */ + +static VALUE +rb_io_syswrite(io, str) + VALUE io, str; +{ + OpenFile *fptr; + FILE *f; + long n; + + rb_secure(4); + if (TYPE(str) != T_STRING) + str = rb_obj_as_string(str); + + GetOpenFile(io, fptr); + rb_io_check_writable(fptr); + f = GetWriteFile(fptr); + + if (fptr->mode & FMODE_WBUF) { + rb_warn("syswrite for buffered IO"); + } + if (!rb_thread_fd_writable(fileno(f))) { + rb_io_check_closed(fptr); + } + TRAP_BEG; + n = write(fileno(f), RSTRING(str)->ptr, RSTRING(str)->len); + TRAP_END; + + if (n == -1) rb_sys_fail(fptr->path); + + return LONG2FIX(n); +} + +/* + * call-seq: + * ios.sysread(integer ) => string + * + * Reads <i>integer</i> bytes from <em>ios</em> using a low-level + * read and returns them as a string. Do not mix with other methods + * that read from <em>ios</em> or you may get unpredictable results. + * Raises <code>SystemCallError</code> on error and + * <code>EOFError</code> at end of file. + * + * f = File.new("testfile") + * f.sysread(16) #=> "This is line one" + */ + +static VALUE +rb_io_sysread(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE len, str; + OpenFile *fptr; + long n, ilen; + + rb_scan_args(argc, argv, "11", &len, &str); + ilen = NUM2LONG(len); + + if (NIL_P(str)) { + str = rb_str_new(0, ilen); + } + else { + StringValue(str); + rb_str_modify(str); + rb_str_resize(str, ilen); + } + if (ilen == 0) return str; + + GetOpenFile(io, fptr); + rb_io_check_readable(fptr); + + if (READ_DATA_BUFFERED(fptr->f)) { + rb_raise(rb_eIOError, "sysread for buffered IO"); + } + rb_str_locktmp(str); + + n = fileno(fptr->f); + rb_thread_wait_fd(fileno(fptr->f)); + rb_io_check_closed(fptr); + if (RSTRING(str)->len != ilen) { + rb_raise(rb_eRuntimeError, "buffer string modified"); + } + TRAP_BEG; + n = read(fileno(fptr->f), RSTRING(str)->ptr, ilen); + TRAP_END; + + rb_str_unlocktmp(str); + if (n == -1) { + rb_sys_fail(fptr->path); + } + rb_str_resize(str, n); + if (n == 0 && ilen > 0) { + rb_eof_error(); + } + RSTRING(str)->len = n; + RSTRING(str)->ptr[n] = '\0'; + OBJ_TAINT(str); + + return str; +} + +/* + * call-seq: + * ios.binmode => ios + * + * Puts <em>ios</em> into binary mode. This is useful only in + * MS-DOS/Windows environments. Once a stream is in binary mode, it + * cannot be reset to nonbinary mode. + */ + +VALUE +rb_io_binmode(io) + VALUE io; +{ +#if defined(_WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(__human68k__) || defined(__EMX__) + OpenFile *fptr; + + GetOpenFile(io, fptr); +#ifdef __human68k__ + if (fptr->f) + fmode(fptr->f, _IOBIN); + if (fptr->f2) + fmode(fptr->f2, _IOBIN); +#else + if (fptr->f && setmode(fileno(fptr->f), O_BINARY) == -1) + rb_sys_fail(fptr->path); + if (fptr->f2 && setmode(fileno(fptr->f2), O_BINARY) == -1) + rb_sys_fail(fptr->path); +#endif + + fptr->mode |= FMODE_BINMODE; +#endif + return io; +} + +char* +rb_io_flags_mode(flags) + int flags; +{ +#ifdef O_BINARY +# define MODE_BINMODE(a,b) ((flags & FMODE_BINMODE) ? (b) : (a)) +#else +# define MODE_BINMODE(a,b) (a) +#endif + if (flags & FMODE_APPEND) { + if ((flags & FMODE_READWRITE) == FMODE_READWRITE) { + return MODE_BINMODE("a+", "ab+"); + } + return MODE_BINMODE("a", "ab"); + } + switch (flags & FMODE_READWRITE) { + case FMODE_READABLE: + return MODE_BINMODE("r", "rb"); + case FMODE_WRITABLE: + return MODE_BINMODE("w", "wb"); + case FMODE_READWRITE: + if (flags & FMODE_CREATE) { + return MODE_BINMODE("w+", "wb+"); + } + return MODE_BINMODE("r+", "rb+"); + } + rb_raise(rb_eArgError, "illegal access modenum %o", flags); + return NULL; /* not reached */ +} + +int +rb_io_mode_flags(mode) + const char *mode; +{ + int flags = 0; + const char *m = mode; + + switch (*m++) { + case 'r': + flags |= FMODE_READABLE; + break; + case 'w': + flags |= FMODE_WRITABLE | FMODE_CREATE; + break; + case 'a': + flags |= FMODE_WRITABLE | FMODE_APPEND | FMODE_CREATE; + break; + default: + error: + rb_raise(rb_eArgError, "illegal access mode %s", mode); + } + + while (*m) { + switch (*m++) { + case 'b': + flags |= FMODE_BINMODE; + break; + case '+': + flags |= FMODE_READWRITE; + break; + default: + goto error; + } + } + + return flags; +} + +int +rb_io_modenum_flags(mode) + int mode; +{ + int flags = 0; + + switch (mode & (O_RDONLY|O_WRONLY|O_RDWR)) { + case O_RDONLY: + flags = FMODE_READABLE; + break; + case O_WRONLY: + flags = FMODE_WRITABLE; + break; + case O_RDWR: + flags = FMODE_READWRITE; + break; + } + + if (mode & O_APPEND) { + flags |= FMODE_APPEND; + } + if (mode & O_CREAT) { + flags |= FMODE_CREATE; + } +#ifdef O_BINARY + if (mode & O_BINARY) { + flags |= FMODE_BINMODE; + } +#endif + + return flags; +} + +static int +rb_io_mode_modenum(mode) + const char *mode; +{ + int flags = 0; + const char *m = mode; + + switch (*m++) { + case 'r': + flags |= O_RDONLY; + break; + case 'w': + flags |= O_WRONLY | O_CREAT | O_TRUNC; + break; + case 'a': + flags |= O_WRONLY | O_CREAT | O_APPEND; + break; + default: + error: + rb_raise(rb_eArgError, "illegal access mode %s", mode); + } + + while (*m) { + switch (*m++) { + case 'b': +#ifdef O_BINARY + flags |= O_BINARY; +#endif + break; + case '+': + flags = (flags & ~O_ACCMODE) | O_RDWR; + break; + default: + goto error; + } + } + + return flags; +} + +#define MODENUM_MAX 4 + +static char* +rb_io_modenum_mode(flags) + int flags; +{ +#ifdef O_BINARY +# define MODE_BINARY(a,b) ((flags & O_BINARY) ? (b) : (a)) +#else +# define MODE_BINARY(a,b) (a) +#endif + if (flags & O_APPEND) { + if ((flags & O_RDWR) == O_RDWR) { + return MODE_BINARY("a+", "ab+"); + } + return MODE_BINARY("a", "ab"); + } + switch (flags & (O_RDONLY|O_WRONLY|O_RDWR)) { + case O_RDONLY: + return MODE_BINARY("r", "rb"); + case O_WRONLY: + return MODE_BINARY("w", "wb"); + case O_RDWR: + return MODE_BINARY("r+", "rb+"); + } + rb_raise(rb_eArgError, "illegal access modenum %o", flags); + return NULL; /* not reached */ +} + +static int +rb_sysopen(fname, flags, mode) + char *fname; + int flags; + unsigned int mode; +{ + int fd; + + fd = open(fname, flags, mode); + if (fd < 0) { + if (errno == EMFILE || errno == ENFILE) { + rb_gc(); + fd = open(fname, flags, mode); + } + if (fd < 0) { + rb_sys_fail(fname); + } + } + return fd; +} + +FILE * +rb_fopen(fname, mode) + const char *fname; + const char *mode; +{ + FILE *file; + + file = fopen(fname, mode); + if (!file) { + if (errno == EMFILE || errno == ENFILE) { + rb_gc(); + file = fopen(fname, mode); + } + if (!file) { + rb_sys_fail(fname); + } + } +#ifdef USE_SETVBUF + if (setvbuf(file, NULL, _IOFBF, 0) != 0) + rb_warn("setvbuf() can't be honoured for %s", fname); +#endif +#ifdef __human68k__ + fmode(file, _IOTEXT); +#endif + return file; +} + +FILE * +rb_fdopen(fd, mode) + int fd; + const char *mode; +{ + FILE *file; + +#if defined(sun) + errno = 0; +#endif + file = fdopen(fd, mode); + if (!file) { +#if defined(sun) + if (errno == 0 || errno == EMFILE || errno == ENFILE) { +#else + if (errno == EMFILE || errno == ENFILE) { +#endif + rb_gc(); +#if defined(sun) + errno = 0; +#endif + file = fdopen(fd, mode); + } + if (!file) { +#ifdef _WIN32 + if (errno == 0) errno = EINVAL; +#endif +#if defined(sun) + if (errno == 0) errno = EMFILE; +#endif + rb_sys_fail(0); + } + } + +#ifdef USE_SETVBUF + if (setvbuf(file, NULL, _IOFBF, 0) != 0) + rb_warn("setvbuf() can't be honoured (fd=%d)", fd); +#endif + return file; +} + +static VALUE +rb_file_open_internal(io, fname, mode) + VALUE io; + const char *fname, *mode; +{ + OpenFile *fptr; + + MakeOpenFile(io, fptr); + + fptr->mode = rb_io_mode_flags(mode); + fptr->path = strdup(fname); + fptr->f = rb_fopen(fptr->path, rb_io_flags_mode(fptr->mode)); + + return io; +} + +VALUE +rb_file_open(fname, mode) + const char *fname, *mode; +{ + return rb_file_open_internal(io_alloc(rb_cFile), fname, mode); +} + +static VALUE +rb_file_sysopen_internal(io, fname, flags, mode) + VALUE io; + char *fname; + int flags, mode; +{ + OpenFile *fptr; + int fd; + char *m; + + MakeOpenFile(io, fptr); + + fptr->path = strdup(fname); + m = rb_io_modenum_mode(flags); + fptr->mode = rb_io_modenum_flags(flags); + fd = rb_sysopen(fptr->path, flags, mode); + fptr->f = rb_fdopen(fd, m); + + return io; +} + +VALUE +rb_file_sysopen(fname, flags, mode) + const char *fname; + int flags, mode; +{ + return rb_file_sysopen_internal(io_alloc(rb_cFile), fname, flags, mode); +} + +#if defined (_WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(__human68k__) || defined(__VMS) +static struct pipe_list { + OpenFile *fptr; + struct pipe_list *next; +} *pipe_list; + +static void +pipe_add_fptr(fptr) + OpenFile *fptr; +{ + struct pipe_list *list; + + list = ALLOC(struct pipe_list); + list->fptr = fptr; + list->next = pipe_list; + pipe_list = list; +} + +static void +pipe_del_fptr(fptr) + OpenFile *fptr; +{ + struct pipe_list *list = pipe_list; + struct pipe_list *tmp; + + if (list->fptr == fptr) { + pipe_list = list->next; + free(list); + return; + } + + while (list->next) { + if (list->next->fptr == fptr) { + tmp = list->next; + list->next = list->next->next; + free(tmp); + return; + } + list = list->next; + } +} + +static void +pipe_atexit _((void)) +{ + struct pipe_list *list = pipe_list; + struct pipe_list *tmp; + + while (list) { + tmp = list->next; + rb_io_fptr_finalize(list->fptr); + list = tmp; + } +} + +static void pipe_finalize _((OpenFile *fptr,int)); + +static void +pipe_finalize(fptr, noraise) + OpenFile *fptr; + int noraise; +{ +#if !defined (__CYGWIN__) && !defined(_WIN32) + extern VALUE rb_last_status; + int status; + if (fptr->f) { + status = pclose(fptr->f); + } + if (fptr->f2) { + status = pclose(fptr->f2); + } + fptr->f = fptr->f2 = 0; +#if defined DJGPP + status <<= 8; +#endif + rb_last_status = INT2FIX(status); +#else + fptr_finalize(fptr, noraise); +#endif + pipe_del_fptr(fptr); +} +#endif + +void +rb_io_synchronized(fptr) + OpenFile *fptr; +{ + fptr->mode |= FMODE_SYNC; +} + +void +rb_io_unbuffered(fptr) + OpenFile *fptr; +{ + rb_io_synchronized(fptr); +} + +static VALUE pipe_open(VALUE pstr, char *pname, char *mode); + +static VALUE +pipe_open(pstr, pname, mode) + VALUE pstr; + char *pname, *mode; +{ + int modef = rb_io_mode_flags(mode); + OpenFile *fptr; +#if defined(DJGPP) || defined(__human68k__) || defined(__VMS) + FILE *f; +#else + int pid; +#ifdef _WIN32 + FILE *fpr, *fpw; +#else + int pr[2], pw[2]; +#endif +#endif + volatile int doexec; + + if (!pname) pname = StringValueCStr(pstr); + doexec = (strcmp("-", pname) != 0); + +#if defined(DJGPP) || defined(__human68k__) || defined(__VMS) || defined(_WIN32) + if (!doexec) { + rb_raise(rb_eNotImpError, + "fork() function is unimplemented on this machine"); + } +#endif + +#if defined(DJGPP) || defined(__human68k__) || defined(__VMS) + f = popen(pname, mode); + + if (!f) rb_sys_fail(pname); + else { + VALUE port = io_alloc(rb_cIO); + + MakeOpenFile(port, fptr); + fptr->finalize = pipe_finalize; + fptr->mode = modef; + + pipe_add_fptr(fptr); + if (modef & FMODE_READABLE) fptr->f = f; + if (modef & FMODE_WRITABLE) { + if (fptr->f) fptr->f2 = f; + else fptr->f = f; + rb_io_synchronized(fptr); + } + return (VALUE)port; + } +#else +#ifdef _WIN32 +retry: + pid = pipe_exec(pname, rb_io_mode_modenum(mode), &fpr, &fpw); + if (pid == -1) { /* exec failed */ + if (errno == EAGAIN) { + rb_thread_sleep(1); + goto retry; + } + rb_sys_fail(pname); + } + else { + VALUE port = io_alloc(rb_cIO); + + MakeOpenFile(port, fptr); + fptr->mode = modef; + fptr->mode |= FMODE_SYNC; + fptr->pid = pid; + + if (modef & FMODE_READABLE) { + fptr->f = fpr; + } + if (modef & FMODE_WRITABLE) { + if (fptr->f) fptr->f2 = fpw; + else fptr->f = fpw; + } + fptr->finalize = pipe_finalize; + pipe_add_fptr(fptr); + return (VALUE)port; + } +#else + if (((modef & FMODE_READABLE) && pipe(pr) == -1) || + ((modef & FMODE_WRITABLE) && pipe(pw) == -1)) + rb_sys_fail(pname); + + if (!doexec) { + fflush(stdin); /* is it really needed? */ + fflush(stdout); + fflush(stderr); + } + + retry: + switch ((pid = fork())) { + case 0: /* child */ + if (modef & FMODE_READABLE) { + close(pr[0]); + if (pr[1] != 1) { + dup2(pr[1], 1); + close(pr[1]); + } + } + if (modef & FMODE_WRITABLE) { + close(pw[1]); + if (pw[0] != 0) { + dup2(pw[0], 0); + close(pw[0]); + } + } + + if (doexec) { + int fd; + + for (fd = 3; fd < NOFILE; fd++) + close(fd); + rb_proc_exec(pname); + fprintf(stderr, "%s:%d: command not found: %s\n", + ruby_sourcefile, ruby_sourceline, pname); + _exit(127); + } + rb_io_synchronized(RFILE(orig_stdout)->fptr); + rb_io_synchronized(RFILE(orig_stderr)->fptr); + return Qnil; + + case -1: /* fork failed */ + if (errno == EAGAIN) { + rb_thread_sleep(1); + goto retry; + } + else { + int e = errno; + if ((modef & FMODE_READABLE)) { + close(pr[0]); + close(pr[1]); + } + if ((modef & FMODE_WRITABLE)) { + close(pw[0]); + close(pw[1]); + } + errno = e; + rb_sys_fail(pname); + } + break; + + default: /* parent */ + if (pid < 0) rb_sys_fail(pname); + else { + VALUE port = io_alloc(rb_cIO); + + MakeOpenFile(port, fptr); + fptr->mode = modef; + fptr->mode |= FMODE_SYNC; + fptr->pid = pid; + + if (modef & FMODE_READABLE) { + close(pr[1]); + fptr->f = rb_fdopen(pr[0], "r"); + } + if (modef & FMODE_WRITABLE) { + FILE *f = rb_fdopen(pw[1], "w"); + + close(pw[0]); + if (fptr->f) fptr->f2 = f; + else fptr->f = f; + } +#if defined (__CYGWIN__) + fptr->finalize = pipe_finalize; + pipe_add_fptr(fptr); +#endif + return port; + } + } +#endif +#endif +} + +/* + * call-seq: + * IO.popen(cmd_string, mode="r" ) => io + * IO.popen(cmd_string, mode="r" ) {|io| block } => obj + * + * Runs the specified command string as a subprocess; the subprocess's + * standard input and output will be connected to the returned + * <code>IO</code> object. If <i>cmd_string</i> starts with a + * ``<code>-</code>'', then a new instance of Ruby is started as the + * subprocess. The default mode for the new file object is ``r'', but + * <i>mode</i> may be set to any of the modes listed in the description + * for class IO. + * + * If a block is given, Ruby will run the command as a child connected + * to Ruby with a pipe. Ruby's end of the pipe will be passed as a + * parameter to the block. + * At the end of block, Ruby close the pipe and sets <code>$?</code>. + * In this case <code>IO::popen</code> returns + * the value of the block. + * + * If a block is given with a <i>cmd_string</i> of ``<code>-</code>'', + * the block will be run in two separate processes: once in the parent, + * and once in a child. The parent process will be passed the pipe + * object as a parameter to the block, the child version of the block + * will be passed <code>nil</code>, and the child's standard in and + * standard out will be connected to the parent through the pipe. Not + * available on all platforms. + * + * f = IO.popen("uname") + * p f.readlines + * puts "Parent is #{Process.pid}" + * IO.popen ("date") { |f| puts f.gets } + * IO.popen("-") {|f| $stderr.puts "#{Process.pid} is here, f is #{f}"} + * p $? + * + * <em>produces:</em> + * + * ["Linux\n"] + * Parent is 26166 + * Wed Apr 9 08:53:52 CDT 2003 + * 26169 is here, f is + * 26166 is here, f is #<IO:0x401b3d44> + * #<Process::Status: pid=26166,exited(0)> + */ + +static VALUE +rb_io_s_popen(argc, argv, klass) + int argc; + VALUE *argv; + VALUE klass; +{ + char *mode; + VALUE pname, pmode, port; + + if (rb_scan_args(argc, argv, "11", &pname, &pmode) == 1) { + mode = "r"; + } + else if (FIXNUM_P(pmode)) { + mode = rb_io_modenum_mode(FIX2INT(pmode)); + } + else { + mode = rb_io_flags_mode(rb_io_mode_flags(StringValuePtr(pmode))); + } + SafeStringValue(pname); + port = pipe_open(pname, 0, mode); + if (NIL_P(port)) { + /* child */ + if (rb_block_given_p()) { + rb_yield(Qnil); + fflush(stdout); + fflush(stderr); + _exit(0); + } + return Qnil; + } + RBASIC(port)->klass = klass; + if (rb_block_given_p()) { + return rb_ensure(rb_yield, port, io_close, port); + } + return port; +} + +static VALUE +rb_open_file(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE fname, vmode, perm; + char *mode; + int flags, fmode; + + rb_scan_args(argc, argv, "12", &fname, &vmode, &perm); + SafeStringValue(fname); + + if (FIXNUM_P(vmode) || !NIL_P(perm)) { + if (FIXNUM_P(vmode)) { + flags = FIX2INT(vmode); + } + else { + SafeStringValue(vmode); + flags = rb_io_mode_modenum(RSTRING(vmode)->ptr); + } + fmode = NIL_P(perm) ? 0666 : NUM2INT(perm); + + rb_file_sysopen_internal(io, RSTRING(fname)->ptr, flags, fmode); + } + else { + mode = NIL_P(vmode) ? "r" : StringValuePtr(vmode); + rb_file_open_internal(io, RSTRING(fname)->ptr, mode); + } + return io; +} + +/* + * call-seq: + * IO.open(fd, mode_string="r" ) => io + * IO.open(fd, mode_string="r" ) {|io| block } => obj + * + * With no associated block, <code>open</code> is a synonym for + * <code>IO::new</code>. If the optional code block is given, it will + * be passed <i>io</i> as an argument, and the IO object will + * automatically be closed when the block terminates. In this instance, + * <code>IO::open</code> returns the value of the block. + * + */ + +static VALUE +rb_io_s_open(argc, argv, klass) + int argc; + VALUE *argv; + VALUE klass; +{ + VALUE io = rb_class_new_instance(argc, argv, klass); + + if (rb_block_given_p()) { + return rb_ensure(rb_yield, io, io_close, io); + } + + return io; +} + +/* + * call-seq: + * IO.sysopen(path, [mode, [perm]]) => fixnum + * + * Opens the given path, returning the underlying file descriptor as a + * <code>Fixnum</code>. + * + * IO.sysopen("testfile") #=> 3 + * + */ + +static VALUE +rb_io_s_sysopen(argc, argv) + int argc; + VALUE *argv; +{ + VALUE fname, vmode, perm; + int flags, fmode, fd; + char *path; + + rb_scan_args(argc, argv, "12", &fname, &vmode, &perm); + SafeStringValue(fname); + + if (NIL_P(vmode)) flags = O_RDONLY; + else if (FIXNUM_P(vmode)) flags = FIX2INT(vmode); + else { + SafeStringValue(vmode); + flags = rb_io_mode_modenum(RSTRING(vmode)->ptr); + } + if (NIL_P(perm)) fmode = 0666; + else fmode = NUM2INT(perm); + + path = ALLOCA_N(char, strlen(RSTRING(fname)->ptr)+1); + strcpy(path, RSTRING(fname)->ptr); + fd = rb_sysopen(path, flags, fmode); + return INT2NUM(fd); +} + +/* + * call-seq: + * open(path [, mode [, perm]] ) => io or nil + * open(path [, mode [, perm]] ) {|io| block } => obj + * + * Creates an <code>IO</code> object connected to the given stream, + * file, or subprocess. + * + * If <i>path</i> does not start with a pipe character + * (``<code>|</code>''), treat it as the name of a file to open using + * the specified mode (defaulting to ``<code>r</code>''). (See the table + * of valid modes on page 331.) If a file is being created, its initial + * permissions may be set using the integer third parameter. + * + * If a block is specified, it will be invoked with the + * <code>File</code> object as a parameter, and the file will be + * automatically closed when the block terminates. The call + * returns the value of the block. + * + * If <i>path</i> starts with a pipe character, a subprocess is + * created, connected to the caller by a pair of pipes. The returned + * <code>IO</code> object may be used to write to the standard input + * and read from the standard output of this subprocess. If the command + * following the ``<code>|</code>'' is a single minus sign, Ruby forks, + * and this subprocess is connected to the parent. In the subprocess, + * the <code>open</code> call returns <code>nil</code>. If the command + * is not ``<code>-</code>'', the subprocess runs the command. If a + * block is associated with an <code>open("|-")</code> call, that block + * will be run twice---once in the parent and once in the child. The + * block parameter will be an <code>IO</code> object in the parent and + * <code>nil</code> in the child. The parent's <code>IO</code> object + * will be connected to the child's <code>$stdin</code> and + * <code>$stdout</code>. The subprocess will be terminated at the end + * of the block. + * + * open("testfile") do |f| + * print f.gets + * end + * + * <em>produces:</em> + * + * This is line one + * + * Open a subprocess and read its output: + * + * cmd = open("|date") + * print cmd.gets + * cmd.close + * + * <em>produces:</em> + * + * Wed Apr 9 08:56:31 CDT 2003 + * + * Open a subprocess running the same Ruby program: + * + * f = open("|-", "w+") + * if f == nil + * puts "in Child" + * exit + * else + * puts "Got: #{f.gets}" + * end + * + * <em>produces:</em> + * + * Got: in Child + * + * Open a subprocess using a block to receive the I/O object: + * + * open("|-") do |f| + * if f == nil + * puts "in Child" + * else + * puts "Got: #{f.gets}" + * end + * end + * + * <em>produces:</em> + * + * Got: in Child + */ + +static VALUE +rb_f_open(argc, argv) + int argc; + VALUE *argv; +{ + if (argc >= 1) { + char *str = StringValuePtr(argv[0]); + + if (str[0] == '|') { + VALUE tmp = rb_str_new(str+1, RSTRING(argv[0])->len-1); + OBJ_INFECT(tmp, argv[0]); + argv[0] = tmp; + return rb_io_s_popen(argc, argv, rb_cIO); + } + } + return rb_io_s_open(argc, argv, rb_cFile); +} + +static VALUE +rb_io_open(fname, mode) + char *fname, *mode; +{ + if (fname[0] == '|') { + return pipe_open(0, fname+1, mode); + } + else { + return rb_file_open(fname, mode); + } +} + +static VALUE +rb_io_get_io(io) + VALUE io; +{ + return rb_convert_type(io, T_FILE, "IO", "to_io"); +} + +static VALUE +rb_io_check_io(io) + VALUE io; +{ + return rb_check_convert_type(io, T_FILE, "IO", "to_io"); +} + +static char* +rb_io_mode_string(fptr) + OpenFile *fptr; +{ + switch (fptr->mode & FMODE_READWRITE) { + case FMODE_READABLE: + default: + return "r"; + case FMODE_WRITABLE: + return "w"; + case FMODE_READWRITE: + return "r+"; + } +} + +static VALUE +io_reopen(io, nfile) + VALUE io, nfile; +{ + OpenFile *fptr, *orig; + char *mode; + int fd, fd2; + off_t pos = 0; + + nfile = rb_io_get_io(nfile); + if (rb_safe_level() >= 4 && (!OBJ_TAINTED(io) || !OBJ_TAINTED(nfile))) { + rb_raise(rb_eSecurityError, "Insecure: can't reopen"); + } + GetOpenFile(io, fptr); + GetOpenFile(nfile, orig); + + if (fptr == orig) return io; + if (orig->mode & FMODE_READABLE) { + pos = io_tell(orig); + } + if (orig->f2) { + io_fflush(orig->f2, orig); + } + else if (orig->mode & FMODE_WRITABLE) { + io_fflush(orig->f, orig); + } + if (fptr->mode & FMODE_WRITABLE) { + io_fflush(GetWriteFile(fptr), fptr); + } + + /* copy OpenFile structure */ + fptr->mode = orig->mode; + fptr->pid = orig->pid; + fptr->lineno = orig->lineno; + if (fptr->path) free(fptr->path); + if (orig->path) fptr->path = strdup(orig->path); + else fptr->path = 0; + fptr->finalize = orig->finalize; + + mode = rb_io_mode_string(fptr); + fd = fileno(fptr->f); + fd2 = fileno(orig->f); + if (fd != fd2) { + if (fptr->f == stdin || fptr->f == stdout || fptr->f == stderr) { + clearerr(fptr->f); + /* need to keep stdio objects */ + if (dup2(fd2, fd) < 0) + rb_sys_fail(orig->path); + } + else { + FILE *f2 = fptr->f2; + int m = fptr->mode; + fclose(fptr->f); + fptr->f = f2; + fptr->f2 = NULL; + fptr->mode &= (m & FMODE_READABLE) ? ~FMODE_READABLE : ~FMODE_WRITABLE; + if (dup2(fd2, fd) < 0) + rb_sys_fail(orig->path); + if (f2) { + fptr->f = rb_fdopen(fd, "r"); + fptr->f2 = f2; + } + else { + fptr->f = rb_fdopen(fd, mode); + } + fptr->mode = m; + } + rb_thread_fd_close(fd); + if ((orig->mode & FMODE_READABLE) && pos >= 0) { + io_seek(fptr, pos, SEEK_SET); + io_seek(orig, pos, SEEK_SET); + } + } + + if (fptr->f2 && fd != fileno(fptr->f2)) { + fd = fileno(fptr->f2); + if (!orig->f2) { + fclose(fptr->f2); + rb_thread_fd_close(fd); + fptr->f2 = 0; + } + else if (fd != (fd2 = fileno(orig->f2))) { + fclose(fptr->f2); + rb_thread_fd_close(fd); + if (dup2(fd2, fd) < 0) + rb_sys_fail(orig->path); + fptr->f2 = rb_fdopen(fd, "w"); + } + } + + if (fptr->mode & FMODE_BINMODE) { + rb_io_binmode(io); + } + + RBASIC(io)->klass = RBASIC(nfile)->klass; + return io; +} + +/* + * call-seq: + * ios.reopen(other_IO) => ios + * ios.reopen(path, mode_str) => ios + * + * Reassociates <em>ios</em> with the I/O stream given in + * <i>other_IO</i> or to a new stream opened on <i>path</i>. This may + * dynamically change the actual class of this stream. + * + * f1 = File.new("testfile") + * f2 = File.new("testfile") + * f2.readlines[0] #=> "This is line one\n" + * f2.reopen(f1) #=> #<File:testfile> + * f2.readlines[0] #=> "This is line one\n" + */ + +static VALUE +rb_io_reopen(argc, argv, file) + int argc; + VALUE *argv; + VALUE file; +{ + VALUE fname, nmode; + char *mode; + OpenFile *fptr; + + rb_secure(4); + if (rb_scan_args(argc, argv, "11", &fname, &nmode) == 1) { + VALUE tmp = rb_io_check_io(fname); + if (!NIL_P(tmp)) { + return io_reopen(file, tmp); + } + } + + SafeStringValue(fname); + rb_io_taint_check(file); + fptr = RFILE(file)->fptr; + if (!fptr) { + fptr = RFILE(file)->fptr = ALLOC(OpenFile); + MEMZERO(fptr, OpenFile, 1); + } + + if (!NIL_P(nmode)) { + fptr->mode = rb_io_mode_flags(StringValuePtr(nmode)); + } + + if (fptr->path) { + free(fptr->path); + fptr->path = 0; + } + + fptr->path = strdup(RSTRING(fname)->ptr); + mode = rb_io_flags_mode(fptr->mode); + if (!fptr->f) { + fptr->f = rb_fopen(fptr->path, mode); + if (fptr->f2) { + fclose(fptr->f2); + fptr->f2 = 0; + } + return file; + } + + if (freopen(RSTRING(fname)->ptr, mode, fptr->f) == 0) { + rb_sys_fail(fptr->path); + } +#ifdef USE_SETVBUF + if (setvbuf(fptr->f, NULL, _IOFBF, 0) != 0) + rb_warn("setvbuf() can't be honoured for %s", RSTRING(fname)->ptr); +#endif + + if (fptr->f2) { + if (freopen(RSTRING(fname)->ptr, "w", fptr->f2) == 0) { + rb_sys_fail(fptr->path); + } + } + + return file; +} + +/* :nodoc: */ +static VALUE +rb_io_init_copy(dest, io) + VALUE dest, io; +{ + OpenFile *fptr, *orig; + int fd; + char *mode; + + io = rb_io_get_io(io); + if (dest == io) return dest; + GetOpenFile(io, orig); + MakeOpenFile(dest, fptr); + + if (orig->f2) { + io_fflush(orig->f2, orig); + fseeko(orig->f, 0L, SEEK_CUR); + } + else if (orig->mode & FMODE_WRITABLE) { + io_fflush(orig->f, orig); + } + else { + fseeko(orig->f, 0L, SEEK_CUR); + } + + /* copy OpenFile structure */ + fptr->mode = orig->mode; + fptr->pid = orig->pid; + fptr->lineno = orig->lineno; + if (orig->path) fptr->path = strdup(orig->path); + fptr->finalize = orig->finalize; + + switch (fptr->mode & FMODE_READWRITE) { + case FMODE_READABLE: + default: + mode = "r"; break; + case FMODE_WRITABLE: + mode = "w"; break; + case FMODE_READWRITE: + if (orig->f2) mode = "r"; + else mode = "r+"; + break; + } + fd = ruby_dup(fileno(orig->f)); + fptr->f = rb_fdopen(fd, mode); + fseeko(fptr->f, ftello(orig->f), SEEK_SET); + if (orig->f2) { + if (fileno(orig->f) != fileno(orig->f2)) { + fd = ruby_dup(fileno(orig->f2)); + } + fptr->f2 = rb_fdopen(fd, "w"); + fseeko(fptr->f2, ftello(orig->f2), SEEK_SET); + } + if (fptr->mode & FMODE_BINMODE) { + rb_io_binmode(dest); + } + + return dest; +} + +/* + * call-seq: + * ios.printf(format_string [, obj, ...] ) => nil + * + * Formats and writes to <em>ios</em>, converting parameters under + * control of the format string. See <code>Kernel#sprintf</code> + * for details. + */ + +VALUE +rb_io_printf(argc, argv, out) + int argc; + VALUE argv[]; + VALUE out; +{ + rb_io_write(out, rb_f_sprintf(argc, argv)); + return Qnil; +} + +/* + * call-seq: + * printf(io, string [, obj ... ] ) => nil + * printf(string [, obj ... ] ) => nil + * + * Equivalent to: + * io.write(sprintf(string, obj, ...) + * or + * $stdout.write(sprintf(string, obj, ...) + */ + +static VALUE +rb_f_printf(argc, argv) + int argc; + VALUE argv[]; +{ + VALUE out; + + if (argc == 0) return Qnil; + if (TYPE(argv[0]) == T_STRING) { + out = rb_stdout; + } + else { + out = argv[0]; + argv++; + argc--; + } + rb_io_write(out, rb_f_sprintf(argc, argv)); + + return Qnil; +} + +/* + * call-seq: + * ios.print() => nil + * ios.print(obj, ...) => nil + * + * Writes the given object(s) to <em>ios</em>. The stream must be + * opened for writing. If the output record separator (<code>$\\</code>) + * is not <code>nil</code>, it will be appended to the output. If no + * arguments are given, prints <code>$_</code>. Objects that aren't + * strings will be converted by calling their <code>to_s</code> method. + * With no argument, prints the contents of the variable <code>$_</code>. + * Returns <code>nil</code>. + * + * $stdout.print("This is ", 100, " percent.\n") + * + * <em>produces:</em> + * + * This is 100 percent. + */ + +VALUE +rb_io_print(argc, argv, out) + int argc; + VALUE *argv; + VALUE out; +{ + int i; + VALUE line; + + /* if no argument given, print `$_' */ + if (argc == 0) { + argc = 1; + line = rb_lastline_get(); + argv = &line; + } + for (i=0; i<argc; i++) { + if (!NIL_P(rb_output_fs) && i>0) { + rb_io_write(out, rb_output_fs); + } + switch (TYPE(argv[i])) { + case T_NIL: + rb_io_write(out, rb_str_new2("nil")); + break; + default: + rb_io_write(out, argv[i]); + break; + } + } + if (!NIL_P(rb_output_rs)) { + rb_io_write(out, rb_output_rs); + } + + return Qnil; +} + +/* + * call-seq: + * print(obj, ...) => nil + * + * Prints each object in turn to <code>$stdout</code>. If the output + * field separator (<code>$,</code>) is not +nil+, its + * contents will appear between each field. If the output record + * separator (<code>$\\</code>) is not +nil+, it will be + * appended to the output. If no arguments are given, prints + * <code>$_</code>. Objects that aren't strings will be converted by + * calling their <code>to_s</code> method. + * + * print "cat", [1,2,3], 99, "\n" + * $, = ", " + * $\ = "\n" + * print "cat", [1,2,3], 99 + * + * <em>produces:</em> + * + * cat12399 + * cat, 1, 2, 3, 99 + */ + +static VALUE +rb_f_print(argc, argv) + int argc; + VALUE *argv; +{ + rb_io_print(argc, argv, rb_stdout); + return Qnil; +} + +/* + * call-seq: + * ios.putc(obj) => obj + * + * If <i>obj</i> is <code>Numeric</code>, write the character whose + * code is <i>obj</i>, otherwise write the first character of the + * string representation of <i>obj</i> to <em>ios</em>. + * + * $stdout.putc "A" + * $stdout.putc 65 + * + * <em>produces:</em> + * + * AA + */ + +static VALUE +rb_io_putc(io, ch) + VALUE io, ch; +{ + char c = NUM2CHR(ch); + + rb_io_write(io, rb_str_new(&c, 1)); + return ch; +} + +/* + * call-seq: + * putc(int) => int + * + * Equivalent to: + * + * $stdout.putc(int) + */ + +static VALUE +rb_f_putc(recv, ch) + VALUE recv, ch; +{ + return rb_io_putc(rb_stdout, ch); +} + +static VALUE +io_puts_ary(ary, out) + VALUE ary, out; +{ + VALUE tmp; + long i; + + for (i=0; i<RARRAY(ary)->len; i++) { + tmp = RARRAY(ary)->ptr[i]; + if (rb_inspecting_p(tmp)) { + tmp = rb_str_new2("[...]"); + } + rb_io_puts(1, &tmp, out); + } + return Qnil; +} + +/* + * call-seq: + * ios.puts(obj, ...) => nil + * + * Writes the given objects to <em>ios</em> as with + * <code>IO#print</code>. Writes a record separator (typically a + * newline) after any that do not already end with a newline sequence. + * If called with an array argument, writes each element on a new line. + * If called without arguments, outputs a single record separator. + * + * $stdout.puts("this", "is", "a", "test") + * + * <em>produces:</em> + * + * this + * is + * a + * test + */ + +VALUE +rb_io_puts(argc, argv, out) + int argc; + VALUE *argv; + VALUE out; +{ + int i; + VALUE line; + + /* if no argument given, print newline. */ + if (argc == 0) { + rb_io_write(out, rb_default_rs); + return Qnil; + } + for (i=0; i<argc; i++) { + if (NIL_P(argv[i])) { + line = rb_str_new2("nil"); + } + else { + line = rb_check_array_type(argv[i]); + if (!NIL_P(line)) { + rb_protect_inspect(io_puts_ary, line, out); + continue; + } + line = rb_obj_as_string(argv[i]); + } + rb_io_write(out, line); + if (RSTRING(line)->len == 0 || + RSTRING(line)->ptr[RSTRING(line)->len-1] != '\n') { + rb_io_write(out, rb_default_rs); + } + } + + return Qnil; +} + +/* + * call-seq: + * puts(obj, ...) => nil + * + * Equivalent to + * + * $stdout.puts(obj, ...) + */ + +static VALUE +rb_f_puts(argc, argv) + int argc; + VALUE *argv; +{ + rb_io_puts(argc, argv, rb_stdout); + return Qnil; +} + +void +rb_p(obj) /* for debug print within C code */ + VALUE obj; +{ + rb_io_write(rb_stdout, rb_obj_as_string(rb_inspect(obj))); + rb_io_write(rb_stdout, rb_default_rs); +} + +/* + * call-seq: + * p(obj, ...) => nil + * + * For each object, directly writes + * _obj_.+inspect+ followed by the current output + * record separator to the program's standard output. + * + * S = Struct.new(:name, :state) + * s = S['dave', 'TX'] + * p s + * + * <em>produces:</em> + * + * #<S name="dave", state="TX"> + */ + +static VALUE +rb_f_p(argc, argv) + int argc; + VALUE *argv; +{ + int i; + + for (i=0; i<argc; i++) { + rb_p(argv[i]); + } + if (TYPE(rb_stdout) == T_FILE) { + rb_io_flush(rb_stdout); + } + return Qnil; +} + +/* + * call-seq: + * obj.display(port=$>) => nil + * + * Prints <i>obj</i> on the given port (default <code>$></code>). + * Equivalent to: + * + * def display(port=$>) + * port.write self + * end + * + * For example: + * + * 1.display + * "cat".display + * [ 4, 5, 6 ].display + * puts + * + * <em>produces:</em> + * + * 1cat456 + */ + +static VALUE +rb_obj_display(argc, argv, self) + int argc; + VALUE *argv; + VALUE self; +{ + VALUE out; + + if (rb_scan_args(argc, argv, "01", &out) == 0) { + out = rb_stdout; + } + + rb_io_write(out, self); + + return Qnil; +} + +void +rb_write_error2(mesg, len) + const char *mesg; + long len; +{ + rb_io_write(rb_stderr, rb_str_new(mesg, len)); +} + +void +rb_write_error(mesg) + const char *mesg; +{ + rb_write_error2(mesg, strlen(mesg)); +} + +static void +must_respond_to(mid, val, id) + ID mid; + VALUE val; + ID id; +{ + if (!rb_respond_to(val, mid)) { + rb_raise(rb_eTypeError, "%s must have %s method, %s given", + rb_id2name(id), rb_id2name(mid), + rb_obj_classname(val)); + } +} + +static void +stdout_setter(val, id, variable) + VALUE val; + ID id; + VALUE *variable; +{ + must_respond_to(id_write, val, id); + *variable = val; +} + +static void +defout_setter(val, id, variable) + VALUE val; + ID id; + VALUE *variable; +{ + stdout_setter(val, id, variable); + rb_warn("$defout is obsolete; use $stdout instead"); +} + +static void +deferr_setter(val, id, variable) + VALUE val; + ID id; + VALUE *variable; +{ + stdout_setter(val, id, variable); + rb_warn("$deferr is obsolete; use $stderr instead"); +} + +static VALUE +prep_stdio(f, mode, klass) + FILE *f; + int mode; + VALUE klass; +{ + OpenFile *fp; + VALUE io = io_alloc(klass); + + MakeOpenFile(io, fp); +#ifdef __CYGWIN__ + if (!isatty(fileno(f))) { + mode |= O_BINARY; + setmode(fileno(f), O_BINARY); + } +#endif + fp->f = f; + fp->mode = mode; + + return io; +} + +static void +prep_path(io, path) + VALUE io; + char *path; +{ + OpenFile *fptr; + + GetOpenFile(io, fptr); + if (fptr->path) rb_bug("illegal prep_path() call"); + fptr->path = strdup(path); +} + +/* + * call-seq: + * IO.new(fd, mode) => io + * + * Returns a new <code>IO</code> object (a stream) for the given + * integer file descriptor and mode string. See also + * <code>IO#fileno</code> and <code>IO::for_fd</code>. + * + * a = IO.new(2,"w") # '2' is standard error + * $stderr.puts "Hello" + * a.puts "World" + * + * <em>produces:</em> + * + * Hello + * World + */ + +static VALUE +rb_io_initialize(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE fnum, mode; + OpenFile *fp; + int fd, flags; + + rb_secure(4); + rb_scan_args(argc, argv, "11", &fnum, &mode); + fd = NUM2INT(fnum); + if (argc == 2) { + if (FIXNUM_P(mode)) { + flags = FIX2LONG(mode); + } + else { + SafeStringValue(mode); + flags = rb_io_mode_modenum(RSTRING(mode)->ptr); + } + } + else { +#if defined(HAVE_FCNTL) && defined(F_GETFL) + flags = fcntl(fd, F_GETFL); + if (flags == -1) rb_sys_fail(0); +#else + flags = O_RDONLY; +#endif + } + MakeOpenFile(io, fp); + fp->mode = rb_io_modenum_flags(flags); + fp->f = rb_fdopen(fd, rb_io_modenum_mode(flags)); + + return io; +} + +/* + * call-seq: + * File.new(filename, mode="r") => file + * File.new(filename [, mode [, perm]]) => file + * + + * Opens the file named by _filename_ according to + * _mode_ (default is ``r'') and returns a new + * <code>File</code> object. See the description of class +IO+ for + * a description of _mode_. The file mode may optionally be + * specified as a +Fixnum+ by _or_-ing together the + * flags (O_RDONLY etc, again described under +IO+). Optional + * permission bits may be given in _perm_. These mode and permission + * bits are platform dependent; on Unix systems, see + * <code>open(2)</code> for details. + * + * f = File.new("testfile", "r") + * f = File.new("newfile", "w+") + * f = File.new("newfile", File::CREAT|File::TRUNC|File::RDWR, 0644) + */ + +static VALUE +rb_file_initialize(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + if (RFILE(io)->fptr) { + rb_raise(rb_eRuntimeError, "reinitializing File"); + } + if (0 < argc && argc < 3) { + VALUE fd = rb_check_convert_type(argv[0], T_FIXNUM, "Fixnum", "to_int"); + + if (!NIL_P(fd)) { + argv[0] = fd; + return rb_io_initialize(argc, argv, io); + } + } + rb_open_file(argc, argv, io); + + return io; +} + +/* + * call-seq: + * IO.new(fd, mode_string) => io + * + * Returns a new <code>IO</code> object (a stream) for the given + * integer file descriptor and mode string. See also + * <code>IO#fileno</code> and <code>IO::for_fd</code>. + * + * a = IO.new(2,"w") # '2' is standard error + * $stderr.puts "Hello" + * a.puts "World" + * + * <em>produces:</em> + * + * Hello + * World + */ + +static VALUE +rb_io_s_new(argc, argv, klass) + int argc; + VALUE *argv; + VALUE klass; +{ + if (rb_block_given_p()) { + char *cname = rb_class2name(klass); + + rb_warn("%s::new() does not take block; use %s::open() instead", + cname, cname); + } + return rb_class_new_instance(argc, argv, klass); +} + +/* + * call-seq: + * IO.for_fd(fd, mode) => io + * + * Synonym for <code>IO::new</code>. + * + */ + +static VALUE +rb_io_s_for_fd(argc, argv, klass) + int argc; + VALUE *argv; + VALUE klass; +{ + VALUE io = rb_obj_alloc(klass); + rb_io_initialize(argc, argv, io); + return io; +} + +static int binmode = 0; + +static VALUE +argf_forward(int argc, VALUE *argv) +{ + return rb_funcall3(current_file, ruby_frame->last_func, argc, argv); +} + +#define ARGF_FORWARD(argc, argv) do {\ + if (TYPE(current_file) != T_FILE)\ + return argf_forward(argc, argv);\ +} while (0) +#define NEXT_ARGF_FORWARD(argc, argv) do {\ + if (!next_argv()) return Qnil;\ + ARGF_FORWARD(argc, argv);\ +} while (0) + +static void +argf_close(file) + VALUE file; +{ + if (TYPE(file) == T_FILE) + rb_io_close(file); + else + rb_funcall3(file, rb_intern("close"), 0, 0); +} + +static int +next_argv() +{ + extern VALUE rb_argv; + char *fn; + OpenFile *fptr; + int stdout_binmode = 0; + + if (TYPE(rb_stdout) == T_FILE) { + GetOpenFile(rb_stdout, fptr); + if (fptr->mode & FMODE_BINMODE) + stdout_binmode = 1; + } + + if (init_p == 0) { + if (RARRAY(rb_argv)->len > 0) { + next_p = 1; + } + else { + next_p = -1; + } + init_p = 1; + gets_lineno = 0; + } + + if (next_p == 1) { + next_p = 0; + retry: + if (RARRAY(rb_argv)->len > 0) { + filename = rb_ary_shift(rb_argv); + fn = StringValuePtr(filename); + if (strlen(fn) == 1 && fn[0] == '-') { + current_file = rb_stdin; + if (ruby_inplace_mode) { + rb_warn("Can't do inplace edit for stdio; skipping"); + goto retry; + } + } + else { + FILE *fr = rb_fopen(fn, "r"); + + if (ruby_inplace_mode) { + struct stat st, st2; + VALUE str; + FILE *fw; + + if (TYPE(rb_stdout) == T_FILE && rb_stdout != orig_stdout) { + rb_io_close(rb_stdout); + } + fstat(fileno(fr), &st); + if (*ruby_inplace_mode) { + str = rb_str_new2(fn); +#ifdef NO_LONG_FNAME + ruby_add_suffix(str, ruby_inplace_mode); +#else + rb_str_cat2(str, ruby_inplace_mode); +#endif +#ifdef NO_SAFE_RENAME + (void)fclose(fr); + (void)unlink(RSTRING(str)->ptr); + (void)rename(fn, RSTRING(str)->ptr); + fr = rb_fopen(RSTRING(str)->ptr, "r"); +#else + if (rename(fn, RSTRING(str)->ptr) < 0) { + rb_warn("Can't rename %s to %s: %s, skipping file", + fn, RSTRING(str)->ptr, strerror(errno)); + fclose(fr); + goto retry; + } +#endif + } + else { +#ifdef NO_SAFE_RENAME + rb_fatal("Can't do inplace edit without backup"); +#else + if (unlink(fn) < 0) { + rb_warn("Can't remove %s: %s, skipping file", + fn, strerror(errno)); + fclose(fr); + goto retry; + } +#endif + } + fw = rb_fopen(fn, "w"); +#ifndef NO_SAFE_RENAME + fstat(fileno(fw), &st2); +#ifdef HAVE_FCHMOD + fchmod(fileno(fw), st.st_mode); +#else + chmod(fn, st.st_mode); +#endif + if (st.st_uid!=st2.st_uid || st.st_gid!=st2.st_gid) { + fchown(fileno(fw), st.st_uid, st.st_gid); + } +#endif + rb_stdout = prep_stdio(fw, FMODE_WRITABLE, rb_cFile); + prep_path(rb_stdout, fn); + if (stdout_binmode) rb_io_binmode(rb_stdout); + } + current_file = prep_stdio(fr, FMODE_READABLE, rb_cFile); + prep_path(current_file, fn); + } + if (binmode) rb_io_binmode(current_file); + } + else { + next_p = 1; + return Qfalse; + } + } + else if (next_p == -1) { + current_file = rb_stdin; + filename = rb_str_new2("-"); + if (ruby_inplace_mode) { + rb_warn("Can't do inplace edit for stdio"); + rb_stdout = orig_stdout; + } + } + return Qtrue; +} + +static VALUE +argf_getline(argc, argv) + int argc; + VALUE *argv; +{ + VALUE line; + + retry: + if (!next_argv()) return Qnil; + if (argc == 0 && rb_rs == rb_default_rs) { + line = rb_io_gets(current_file); + } + else { + VALUE rs; + + if (argc == 0) { + rs = rb_rs; + } + else { + rb_scan_args(argc, argv, "1", &rs); + if (!NIL_P(rs)) StringValue(rs); + } + line = rb_io_getline(rs, current_file); + } + if (NIL_P(line) && next_p != -1) { + argf_close(current_file); + next_p = 1; + goto retry; + } + if (!NIL_P(line)) { + gets_lineno++; + lineno = INT2FIX(gets_lineno); + } + return line; +} + +/* + * call-seq: + * gets(separator=$/) => string or nil + * + * Returns (and assigns to <code>$_</code>) the next line from the list + * of files in +ARGV+ (or <code>$*</code>), or from standard + * input if no files are present on the command line. Returns + * +nil+ at end of file. The optional argument specifies the + * record separator. The separator is included with the contents of + * each record. A separator of +nil+ reads the entire + * contents, and a zero-length separator reads the input one paragraph + * at a time, where paragraphs are divided by two consecutive newlines. + * If multiple filenames are present in +ARGV+, + * +gets(nil)+ will read the contents one file at a time. + * + * ARGV << "testfile" + * print while gets + * + * <em>produces:</em> + * + * This is line one + * This is line two + * This is line three + * And so on... + * + * The style of programming using <code>$_</code> as an implicit + * parameter is gradually losing favor in the Ruby community. + */ + +static VALUE +rb_f_gets(argc, argv) + int argc; + VALUE *argv; +{ + VALUE line; + + if (!next_argv()) return Qnil; + if (TYPE(current_file) != T_FILE) { + line = rb_funcall3(current_file, rb_intern("gets"), argc, argv); + } + else { + line = argf_getline(argc, argv); + } + rb_lastline_set(line); + return line; +} + +VALUE +rb_gets() +{ + VALUE line; + + if (rb_rs != rb_default_rs) { + return rb_f_gets(0, 0); + } + + retry: + if (!next_argv()) return Qnil; + line = rb_io_gets(current_file); + if (NIL_P(line) && next_p != -1) { + argf_close(current_file); + next_p = 1; + goto retry; + } + rb_lastline_set(line); + if (!NIL_P(line)) { + gets_lineno++; + lineno = INT2FIX(gets_lineno); + } + + return line; +} + +/* + * call-seq: + * readline(separator=$/) => string + * + * Equivalent to <code>Kernel::gets</code>, except + * +readline+ raises +EOFError+ at end of file. + */ + +static VALUE +rb_f_readline(argc, argv) + int argc; + VALUE *argv; +{ + VALUE line; + + if (!next_argv()) rb_eof_error(); + ARGF_FORWARD(argc, argv); + line = rb_f_gets(argc, argv); + if (NIL_P(line)) { + rb_eof_error(); + } + + return line; +} + +/* + * obsolete + */ + +static VALUE +rb_f_getc() +{ + rb_warn("getc is obsolete; use STDIN.getc instead"); + if (TYPE(rb_stdin) != T_FILE) { + return rb_funcall3(rb_stdin, rb_intern("getc"), 0, 0); + } + return rb_io_getc(rb_stdin); +} + +/* + * call-seq: + * readlines(separator=$/) => array + * + * Returns an array containing the lines returned by calling + * <code>Kernel.gets(<i>separator</i>)</code> until the end of file. + */ + +static VALUE +rb_f_readlines(argc, argv) + int argc; + VALUE *argv; +{ + VALUE line, ary; + + NEXT_ARGF_FORWARD(argc, argv); + ary = rb_ary_new(); + while (!NIL_P(line = argf_getline(argc, argv))) { + rb_ary_push(ary, line); + } + + return ary; +} + +/* + * call-seq: + * `cmd` => string + * + * Returns the standard output of running _cmd_ in a subshell. + * The built-in syntax <code>%x{...}</code> uses + * this method. Sets <code>$?</code> to the process status. + * + * `date` #=> "Wed Apr 9 08:56:30 CDT 2003\n" + * `ls testdir`.split[1] #=> "main.rb" + * `echo oops && exit 99` #=> "oops\n" + * $?.exitstatus #=> 99 + */ + +static VALUE +rb_f_backquote(obj, str) + VALUE obj, str; +{ + volatile VALUE port; + VALUE result; + OpenFile *fptr; + + SafeStringValue(str); + port = pipe_open(str, 0, "r"); + if (NIL_P(port)) return rb_str_new(0,0); + + GetOpenFile(port, fptr); + result = read_all(fptr, remain_size(fptr), Qnil); + rb_io_close(port); + + return result; +} + +#ifdef HAVE_SYS_SELECT_H +#include <sys/select.h> +#endif + +/* + * call-seq: + * IO.select(read_array + * [, write_array + * [, error_array + * [, timeout]]] ) => array or nil + * + * See <code>Kernel#select</code>. + */ + +static VALUE +rb_f_select(argc, argv, obj) + int argc; + VALUE *argv; + VALUE obj; +{ + VALUE read, write, except, timeout, res, list; + fd_set rset, wset, eset, pset; + fd_set *rp, *wp, *ep; + struct timeval *tp, timerec; + OpenFile *fptr; + long i; + int max = 0, n; + int interrupt_flag = 0; + int pending = 0; + + rb_scan_args(argc, argv, "13", &read, &write, &except, &timeout); + if (NIL_P(timeout)) { + tp = 0; + } + else { + timerec = rb_time_interval(timeout); + tp = &timerec; + } + + FD_ZERO(&pset); + if (!NIL_P(read)) { + Check_Type(read, T_ARRAY); + rp = &rset; + FD_ZERO(rp); + for (i=0; i<RARRAY(read)->len; i++) { + GetOpenFile(rb_io_get_io(RARRAY(read)->ptr[i]), fptr); + FD_SET(fileno(fptr->f), rp); + if (READ_DATA_PENDING(fptr->f)) { /* check for buffered data */ + pending++; + FD_SET(fileno(fptr->f), &pset); + } + if (max < fileno(fptr->f)) max = fileno(fptr->f); + } + if (pending) { /* no blocking if there's buffered data */ + timerec.tv_sec = timerec.tv_usec = 0; + tp = &timerec; + } + } + else + rp = 0; + + if (!NIL_P(write)) { + Check_Type(write, T_ARRAY); + wp = &wset; + FD_ZERO(wp); + for (i=0; i<RARRAY(write)->len; i++) { + GetOpenFile(rb_io_get_io(RARRAY(write)->ptr[i]), fptr); + FD_SET(fileno(fptr->f), wp); + if (max < fileno(fptr->f)) max = fileno(fptr->f); + if (fptr->f2) { + FD_SET(fileno(fptr->f2), wp); + if (max < fileno(fptr->f2)) max = fileno(fptr->f2); + } + } + } + else + wp = 0; + + if (!NIL_P(except)) { + Check_Type(except, T_ARRAY); + ep = &eset; + FD_ZERO(ep); + for (i=0; i<RARRAY(except)->len; i++) { + GetOpenFile(rb_io_get_io(RARRAY(except)->ptr[i]), fptr); + FD_SET(fileno(fptr->f), ep); + if (max < fileno(fptr->f)) max = fileno(fptr->f); + if (fptr->f2) { + FD_SET(fileno(fptr->f2), ep); + if (max < fileno(fptr->f2)) max = fileno(fptr->f2); + } + } + } + else { + ep = 0; + } + + max++; + + n = rb_thread_select(max, rp, wp, ep, tp); + if (n < 0) { + rb_sys_fail(0); + } + if (!pending && n == 0) return Qnil; /* returns nil on timeout */ + + res = rb_ary_new2(3); + rb_ary_push(res, rp?rb_ary_new():rb_ary_new2(0)); + rb_ary_push(res, wp?rb_ary_new():rb_ary_new2(0)); + rb_ary_push(res, ep?rb_ary_new():rb_ary_new2(0)); + + if (interrupt_flag == 0) { + if (rp) { + list = RARRAY(res)->ptr[0]; + for (i=0; i< RARRAY(read)->len; i++) { + GetOpenFile(rb_io_get_io(RARRAY(read)->ptr[i]), fptr); + if (FD_ISSET(fileno(fptr->f), rp) + || FD_ISSET(fileno(fptr->f), &pset)) { + rb_ary_push(list, rb_ary_entry(read, i)); + } + } + } + + if (wp) { + list = RARRAY(res)->ptr[1]; + for (i=0; i< RARRAY(write)->len; i++) { + GetOpenFile(rb_io_get_io(RARRAY(write)->ptr[i]), fptr); + if (FD_ISSET(fileno(fptr->f), wp)) { + rb_ary_push(list, rb_ary_entry(write, i)); + } + else if (fptr->f2 && FD_ISSET(fileno(fptr->f2), wp)) { + rb_ary_push(list, rb_ary_entry(write, i)); + } + } + } + + if (ep) { + list = RARRAY(res)->ptr[2]; + for (i=0; i< RARRAY(except)->len; i++) { + GetOpenFile(rb_io_get_io(RARRAY(except)->ptr[i]), fptr); + if (FD_ISSET(fileno(fptr->f), ep)) { + rb_ary_push(list, rb_ary_entry(except, i)); + } + else if (fptr->f2 && FD_ISSET(fileno(fptr->f2), ep)) { + rb_ary_push(list, rb_ary_entry(except, i)); + } + } + } + } + + return res; /* returns an empty array on interrupt */ +} + +#if !defined(MSDOS) && !defined(__human68k__) +static int +io_cntl(fd, cmd, narg, io_p) + int fd, cmd, io_p; + long narg; +{ + int retval; + +#ifdef HAVE_FCNTL + TRAP_BEG; +# if defined(__CYGWIN__) + retval = io_p?ioctl(fd, cmd, (void*)narg):fcntl(fd, cmd, narg); +# else + retval = io_p?ioctl(fd, cmd, narg):fcntl(fd, cmd, narg); +# endif + TRAP_END; +#else + if (!io_p) { + rb_notimplement(); + } + TRAP_BEG; + retval = ioctl(fd, cmd, narg); + TRAP_END; +#endif + return retval; +} +#endif + +static VALUE +rb_io_ctl(io, req, arg, io_p) + VALUE io, req, arg; + int io_p; +{ +#if !defined(MSDOS) && !defined(__human68k__) + int cmd = NUM2ULONG(req); + OpenFile *fptr; + long len = 0; + long narg = 0; + int retval; + + rb_secure(2); + + if (NIL_P(arg) || arg == Qfalse) { + narg = 0; + } + else if (FIXNUM_P(arg)) { + narg = FIX2LONG(arg); + } + else if (arg == Qtrue) { + narg = 1; + } + else { + VALUE tmp = rb_check_string_type(arg); + + if (NIL_P(tmp)) { + narg = NUM2LONG(arg); + } + else { + arg = tmp; +#ifdef IOCPARM_MASK +#ifndef IOCPARM_LEN +#define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK) +#endif +#endif +#ifdef IOCPARM_LEN + len = IOCPARM_LEN(cmd); /* on BSDish systems we're safe */ +#else + len = 256; /* otherwise guess at what's safe */ +#endif + rb_str_modify(arg); + + if (len <= RSTRING(arg)->len) { + len = RSTRING(arg)->len; + } + if (RSTRING(arg)->len < len) { + rb_str_resize(arg, len+1); + } + RSTRING(arg)->ptr[len] = 17; /* a little sanity check here */ + narg = (long)RSTRING(arg)->ptr; + } + } + GetOpenFile(io, fptr); + retval = io_cntl(fileno(fptr->f), cmd, narg, io_p); + if (retval < 0) rb_sys_fail(fptr->path); + if (TYPE(arg) == T_STRING && RSTRING(arg)->ptr[len] != 17) { + rb_raise(rb_eArgError, "return value overflowed string"); + } + + if (fptr->f2 && fileno(fptr->f) != fileno(fptr->f2)) { + /* call on f2 too; ignore result */ + io_cntl(fileno(fptr->f2), cmd, narg, io_p); + } + + if (!io_p && cmd == F_SETFL) { + if (narg & O_NONBLOCK) { + fptr->mode |= FMODE_WSPLIT_INITIALIZED; + fptr->mode &= ~FMODE_WSPLIT; + } + else { + fptr->mode &= ~(FMODE_WSPLIT_INITIALIZED|FMODE_WSPLIT); + } + } + + return INT2NUM(retval); +#else + rb_notimplement(); + return Qnil; /* not reached */ +#endif +} + +/* + * call-seq: + * ios.ioctl(integer_cmd, arg) => integer + * + * Provides a mechanism for issuing low-level commands to control or + * query I/O devices. Arguments and results are platform dependent. If + * <i>arg</i> is a number, its value is passed directly. If it is a + * string, it is interpreted as a binary sequence of bytes. On Unix + * platforms, see <code>ioctl(2)</code> for details. Not implemented on + * all platforms. + */ + +static VALUE +rb_io_ioctl(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE req, arg; + + rb_scan_args(argc, argv, "11", &req, &arg); + return rb_io_ctl(io, req, arg, 1); +} + +/* + * call-seq: + * ios.fcntl(integer_cmd, arg) => integer + * + * Provides a mechanism for issuing low-level commands to control or + * query file-oriented I/O streams. Arguments and results are platform + * dependent. If <i>arg</i> is a number, its value is passed + * directly. If it is a string, it is interpreted as a binary sequence + * of bytes (<code>Array#pack</code> might be a useful way to build this + * string). On Unix platforms, see <code>fcntl(2)</code> for details. + * Not implemented on all platforms. + */ + +static VALUE +rb_io_fcntl(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ +#ifdef HAVE_FCNTL + VALUE req, arg; + + rb_scan_args(argc, argv, "11", &req, &arg); + return rb_io_ctl(io, req, arg, 0); +#else + rb_notimplement(); + return Qnil; /* not reached */ +#endif +} + +/* + * call-seq: + * syscall(fixnum [, args...]) => integer + * + * Calls the operating system function identified by _fixnum_, + * passing in the arguments, which must be either +String+ + * objects, or +Integer+ objects that ultimately fit within + * a native +long+. Up to nine parameters may be passed (14 + * on the Atari-ST). The function identified by _fixnum_ is system + * dependent. On some Unix systems, the numbers may be obtained from a + * header file called <code>syscall.h</code>. + * + * syscall 4, 1, "hello\n", 6 # '4' is write(2) on our box + * + * <em>produces:</em> + * + * hello + */ + +static VALUE +rb_f_syscall(argc, argv) + int argc; + VALUE *argv; +{ +#if defined(HAVE_SYSCALL) && !defined(__CHECKER__) +#ifdef atarist + unsigned long arg[14]; /* yes, we really need that many ! */ +#else + unsigned long arg[8]; +#endif + int retval = -1; + int i = 1; + int items = argc - 1; + + /* This probably won't work on machines where sizeof(long) != sizeof(int) + * or where sizeof(long) != sizeof(char*). But such machines will + * not likely have syscall implemented either, so who cares? + */ + + rb_secure(2); + if (argc == 0) + rb_raise(rb_eArgError, "too few arguments for syscall"); + if (argc > sizeof(arg) / sizeof(arg[0])) + rb_raise(rb_eArgError, "too many arguments for syscall"); + arg[0] = NUM2LONG(argv[0]); argv++; + while (items--) { + VALUE v = rb_check_string_type(*argv); + + if (!NIL_P(v)) { + StringValue(v); + rb_str_modify(v); + arg[i] = (unsigned long)RSTRING(v)->ptr; + } + else { + arg[i] = (unsigned long)NUM2LONG(*argv); + } + argv++; + i++; + } + TRAP_BEG; + switch (argc) { + case 1: + retval = syscall(arg[0]); + break; + case 2: + retval = syscall(arg[0],arg[1]); + break; + case 3: + retval = syscall(arg[0],arg[1],arg[2]); + break; + case 4: + retval = syscall(arg[0],arg[1],arg[2],arg[3]); + break; + case 5: + retval = syscall(arg[0],arg[1],arg[2],arg[3],arg[4]); + break; + case 6: + retval = syscall(arg[0],arg[1],arg[2],arg[3],arg[4],arg[5]); + break; + case 7: + retval = syscall(arg[0],arg[1],arg[2],arg[3],arg[4],arg[5],arg[6]); + break; + case 8: + retval = syscall(arg[0],arg[1],arg[2],arg[3],arg[4],arg[5],arg[6], + arg[7]); + break; +#ifdef atarist + case 9: + retval = syscall(arg[0],arg[1],arg[2],arg[3],arg[4],arg[5],arg[6], + arg[7], arg[8]); + break; + case 10: + retval = syscall(arg[0],arg[1],arg[2],arg[3],arg[4],arg[5],arg[6], + arg[7], arg[8], arg[9]); + break; + case 11: + retval = syscall(arg[0],arg[1],arg[2],arg[3],arg[4],arg[5],arg[6], + arg[7], arg[8], arg[9], arg[10]); + break; + case 12: + retval = syscall(arg[0],arg[1],arg[2],arg[3],arg[4],arg[5],arg[6], + arg[7], arg[8], arg[9], arg[10], arg[11]); + break; + case 13: + retval = syscall(arg[0],arg[1],arg[2],arg[3],arg[4],arg[5],arg[6], + arg[7], arg[8], arg[9], arg[10], arg[11], arg[12]); + break; + case 14: + retval = syscall(arg[0],arg[1],arg[2],arg[3],arg[4],arg[5],arg[6], + arg[7], arg[8], arg[9], arg[10], arg[11], arg[12], arg[13]); + break; +#endif /* atarist */ + } + TRAP_END; + if (retval < 0) rb_sys_fail(0); + return INT2NUM(retval); +#else + rb_notimplement(); + return Qnil; /* not reached */ +#endif +} + +static VALUE io_new_instance _((VALUE)); +static VALUE +io_new_instance(args) + VALUE args; +{ + return rb_class_new_instance(2, (VALUE*)args+1, *(VALUE*)args); +} + +/* + * call-seq: + * IO.pipe -> array + * + * Creates a pair of pipe endpoints (connected to each other) and + * returns them as a two-element array of <code>IO</code> objects: + * <code>[</code> <i>read_file</i>, <i>write_file</i> <code>]</code>. Not + * available on all platforms. + * + * In the example below, the two processes close the ends of the pipe + * that they are not using. This is not just a cosmetic nicety. The + * read end of a pipe will not generate an end of file condition if + * there are any writers with the pipe still open. In the case of the + * parent process, the <code>rd.read</code> will never return if it + * does not first issue a <code>wr.close</code>. + * + * rd, wr = IO.pipe + * + * if fork + * wr.close + * puts "Parent got: <#{rd.read}>" + * rd.close + * Process.wait + * else + * rd.close + * puts "Sending message to parent" + * wr.write "Hi Dad" + * wr.close + * end + * + * <em>produces:</em> + * + * Sending message to parent + * Parent got: <Hi Dad> + */ + +static VALUE +rb_io_s_pipe(klass) + VALUE klass; +{ +#ifndef __human68k__ + int pipes[2], state; + VALUE r, w, args[3]; + +#ifdef _WIN32 + if (_pipe(pipes, 1024, O_BINARY) == -1) +#else + if (pipe(pipes) == -1) +#endif + rb_sys_fail(0); + + args[0] = klass; + args[1] = INT2NUM(pipes[0]); + args[2] = INT2FIX(O_RDONLY); + r = rb_protect(io_new_instance, (VALUE)args, &state); + if (state) { + close(pipes[0]); + close(pipes[1]); + rb_jump_tag(state); + } + args[1] = INT2NUM(pipes[1]); + args[2] = INT2FIX(O_WRONLY); + w = rb_protect(io_new_instance, (VALUE)args, &state); + if (state) { + close(pipes[1]); + if (!NIL_P(r)) rb_io_close(r); + rb_jump_tag(state); + } + rb_io_synchronized(RFILE(w)->fptr); + + return rb_assoc_new(r, w); +#else + rb_notimplement(); + return Qnil; /* not reached */ +#endif +} + +struct foreach_arg { + int argc; + VALUE sep; + VALUE io; +}; + +static VALUE +io_s_foreach(arg) + struct foreach_arg *arg; +{ + VALUE str; + + while (!NIL_P(str = rb_io_getline(arg->sep, arg->io))) { + rb_yield(str); + } + return Qnil; +} + +/* + * call-seq: + * IO.foreach(name, sep_string=$/) {|line| block } => nil + * + * Executes the block for every line in the named I/O port, where lines + * are separated by <em>sep_string</em>. + * + * IO.foreach("testfile") {|x| print "GOT ", x } + * + * <em>produces:</em> + * + * GOT This is line one + * GOT This is line two + * GOT This is line three + * GOT And so on... + */ + +static VALUE +rb_io_s_foreach(argc, argv) + int argc; + VALUE *argv; +{ + VALUE fname; + struct foreach_arg arg; + + rb_scan_args(argc, argv, "11", &fname, &arg.sep); + SafeStringValue(fname); + + if (argc == 1) { + arg.sep = rb_default_rs; + } + else if (!NIL_P(arg.sep)) { + StringValue(arg.sep); + } + arg.io = rb_io_open(RSTRING(fname)->ptr, "r"); + if (NIL_P(arg.io)) return Qnil; + + return rb_ensure(io_s_foreach, (VALUE)&arg, rb_io_close, arg.io); +} + +static VALUE +io_s_readlines(arg) + struct foreach_arg *arg; +{ + return rb_io_readlines(arg->argc, &arg->sep, arg->io); +} + +/* + * call-seq: + * IO.readlines(name, sep_string=$/) => array + * + * Reads the entire file specified by <i>name</i> as individual + * lines, and returns those lines in an array. Lines are separated by + * <i>sep_string</i>. + * + * a = IO.readlines("testfile") + * a[0] #=> "This is line one\n" + * + */ + +static VALUE +rb_io_s_readlines(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE fname; + struct foreach_arg arg; + + rb_scan_args(argc, argv, "11", &fname, &arg.sep); + SafeStringValue(fname); + + arg.argc = argc - 1; + arg.io = rb_io_open(RSTRING(fname)->ptr, "r"); + if (NIL_P(arg.io)) return Qnil; + return rb_ensure(io_s_readlines, (VALUE)&arg, rb_io_close, arg.io); +} + +static VALUE +io_s_read(arg) + struct foreach_arg *arg; +{ + return io_read(arg->argc, &arg->sep, arg->io); +} + +/* + * call-seq: + * IO.read(name, [length [, offset]] ) => string + * + * Opens the file, optionally seeks to the given offset, then returns + * <i>length</i> bytes (defaulting to the rest of the file). + * <code>read</code> ensures the file is closed before returning. + * + * IO.read("testfile") #=> "This is line one\nThis is line two\nThis is line three\nAnd so on...\n" + * IO.read("testfile", 20) #=> "This is line one\nThi" + * IO.read("testfile", 20, 10) #=> "ne one\nThis is line " + */ + +static VALUE +rb_io_s_read(argc, argv, io) + int argc; + VALUE *argv; + VALUE io; +{ + VALUE fname, offset; + struct foreach_arg arg; + + rb_scan_args(argc, argv, "12", &fname, &arg.sep, &offset); + SafeStringValue(fname); + + arg.argc = argc ? 1 : 0; + arg.io = rb_io_open(RSTRING(fname)->ptr, "r"); + if (NIL_P(arg.io)) return Qnil; + if (!NIL_P(offset)) { + rb_io_seek(arg.io, offset, SEEK_SET); + } + return rb_ensure(io_s_read, (VALUE)&arg, rb_io_close, arg.io); +} + +static VALUE +argf_tell() +{ + if (!next_argv()) { + rb_raise(rb_eArgError, "no stream to tell"); + } + ARGF_FORWARD(0, 0); + return rb_io_tell(current_file); +} + +static VALUE +argf_seek_m(argc, argv, self) + int argc; + VALUE *argv; + VALUE self; +{ + if (!next_argv()) { + rb_raise(rb_eArgError, "no stream to seek"); + } + ARGF_FORWARD(argc, argv); + return rb_io_seek_m(argc, argv, current_file); +} + +static VALUE +argf_set_pos(self, offset) + VALUE self, offset; +{ + if (!next_argv()) { + rb_raise(rb_eArgError, "no stream to set position"); + } + ARGF_FORWARD(1, &offset); + return rb_io_set_pos(current_file, offset); +} + +static VALUE +argf_rewind() +{ + if (!next_argv()) { + rb_raise(rb_eArgError, "no stream to rewind"); + } + ARGF_FORWARD(0, 0); + return rb_io_rewind(current_file); +} + +static VALUE +argf_fileno() +{ + if (!next_argv()) { + rb_raise(rb_eArgError, "no stream"); + } + ARGF_FORWARD(0, 0); + return rb_io_fileno(current_file); +} + +static VALUE +argf_to_io() +{ + next_argv(); + ARGF_FORWARD(0, 0); + return current_file; +} + +static VALUE +argf_eof() +{ + if (current_file) { + if (init_p == 0) return Qtrue; + ARGF_FORWARD(0, 0); + if (rb_io_eof(current_file)) { + return Qtrue; + } + } + return Qfalse; +} + +static VALUE +argf_read(argc, argv) + int argc; + VALUE *argv; +{ + VALUE tmp, str, length; + long len = 0; + + rb_scan_args(argc, argv, "02", &length, &str); + if (!NIL_P(length)) { + len = NUM2LONG(argv[0]); + } + if (!NIL_P(str)) { + StringValue(str); + rb_str_resize(str,0); + argv[1] = Qnil; + } + + retry: + if (!next_argv()) { + return str; + } + if (TYPE(current_file) != T_FILE) { + tmp = argf_forward(argc, argv); + } + else { + tmp = io_read(argc, argv, current_file); + } + if (NIL_P(str)) str = tmp; + else if (!NIL_P(tmp)) rb_str_append(str, tmp); + if (NIL_P(tmp) || NIL_P(length)) { + if (next_p != -1) { + argf_close(current_file); + next_p = 1; + goto retry; + } + } + else if (argc >= 1) { + if (RSTRING(str)->len < len) { + len -= RSTRING(str)->len; + argv[0] = INT2NUM(len); + goto retry; + } + } + return str; +} + +static VALUE +argf_getc() +{ + VALUE byte; + + retry: + if (!next_argv()) return Qnil; + if (TYPE(current_file) != T_FILE) { + byte = rb_funcall3(current_file, rb_intern("getc"), 0, 0); + } + else { + byte = rb_io_getc(current_file); + } + if (NIL_P(byte) && next_p != -1) { + argf_close(current_file); + next_p = 1; + goto retry; + } + + return byte; +} + +static VALUE +argf_readchar() +{ + VALUE c; + + NEXT_ARGF_FORWARD(0, 0); + c = argf_getc(); + if (NIL_P(c)) { + rb_eof_error(); + } + return c; +} + +static VALUE +argf_each_line(argc, argv) + int argc; + VALUE *argv; +{ + VALUE str; + + if (!next_argv()) return Qnil; + if (TYPE(current_file) != T_FILE) { + for (;;) { + if (!next_argv()) return argf; + rb_iterate(rb_each, current_file, rb_yield, 0); + next_p = 1; + } + } + while (!NIL_P(str = argf_getline(argc, argv))) { + rb_yield(str); + } + return argf; +} + +static VALUE +argf_each_byte() +{ + VALUE byte; + + while (!NIL_P(byte = argf_getc())) { + rb_yield(byte); + } + return argf; +} + +static VALUE +argf_filename() +{ + next_argv(); + return filename; +} + +static VALUE +argf_file() +{ + next_argv(); + return current_file; +} + +static VALUE +argf_binmode() +{ + binmode = 1; + next_argv(); + ARGF_FORWARD(0, 0); + rb_io_binmode(current_file); + return argf; +} + +static VALUE +argf_skip() +{ + if (next_p != -1) { + argf_close(current_file); + next_p = 1; + } + return argf; +} + +static VALUE +argf_close_m() +{ + next_argv(); + argf_close(current_file); + if (next_p != -1) { + next_p = 1; + } + gets_lineno = 0; + return argf; +} + +static VALUE +argf_closed() +{ + next_argv(); + ARGF_FORWARD(0, 0); + return rb_io_closed(current_file); +} + +static VALUE +argf_to_s() +{ + return rb_str_new2("ARGF"); +} + +static VALUE +opt_i_get() +{ + if (!ruby_inplace_mode) return Qnil; + return rb_str_new2(ruby_inplace_mode); +} + +static void +opt_i_set(val) + VALUE val; +{ + if (!RTEST(val)) { + if (ruby_inplace_mode) free(ruby_inplace_mode); + ruby_inplace_mode = 0; + return; + } + StringValue(val); + if (ruby_inplace_mode) free(ruby_inplace_mode); + ruby_inplace_mode = 0; + ruby_inplace_mode = strdup(RSTRING(val)->ptr); +} + +/* + * Class <code>IO</code> is the basis for all input and output in Ruby. + * An I/O stream may be <em>duplexed</em> (that is, bidirectional), and + * so may use more than one native operating system stream. + * + * Many of the examples in this section use class <code>File</code>, + * the only standard subclass of <code>IO</code>. The two classes are + * closely associated. + * + * As used in this section, <em>portname</em> may take any of the + * following forms. + * + * * A plain string represents a filename suitable for the underlying + * operating system. + * + * * A string starting with ``<code>|</code>'' indicates a subprocess. + * The remainder of the string following the ``<code>|</code>'' is + * invoked as a process with appropriate input/output channels + * connected to it. + * + * * A string equal to ``<code>|-</code>'' will create another Ruby + * instance as a subprocess. + * + * Ruby will convert pathnames between different operating system + * conventions if possible. For instance, on a Windows system the + * filename ``<code>/gumby/ruby/test.rb</code>'' will be opened as + * ``<code>\gumby\ruby\test.rb</code>''. When specifying a + * Windows-style filename in a Ruby string, remember to escape the + * backslashes: + * + * "c:\\gumby\\ruby\\test.rb" + * + * Our examples here will use the Unix-style forward slashes; + * <code>File::SEPARATOR</code> can be used to get the + * platform-specific separator character. + * + * I/O ports may be opened in any one of several different modes, which + * are shown in this section as <em>mode</em>. The mode may + * either be a Fixnum or a String. If numeric, it should be + * one of the operating system specific constants (O_RDONLY, + * O_WRONLY, O_RDWR, O_APPEND and so on). See man open(2) for + * more information. + * + * If the mode is given as a String, it must be one of the + * values listed in the following table. + * + * Mode | Meaning + * -----+-------------------------------------------------------- + * "r" | Read-only, starts at beginning of file (default mode). + * -----+-------------------------------------------------------- + * "r+" | Read-write, starts at beginning of file. + * -----+-------------------------------------------------------- + * "w" | Write-only, truncates existing file + * | to zero length or creates a new file for writing. + * -----+-------------------------------------------------------- + * "w+" | Read-write, truncates existing file to zero length + * | or creates a new file for reading and writing. + * -----+-------------------------------------------------------- + * "a" | Write-only, starts at end of file if file exists, + * | otherwise creates a new file for writing. + * -----+-------------------------------------------------------- + * "a+" | Read-write, starts at end of file if file exists, + * | otherwise creates a new file for reading and + * | writing. + * -----+-------------------------------------------------------- + * "b" | (DOS/Windows only) Binary file mode (may appear with + * | any of the key letters listed above). + * + * + * The global constant ARGF (also accessible as $<) provides an + * IO-like stream which allows access to all files mentioned on the + * command line (or STDIN if no files are mentioned). ARGF provides + * the methods <code>#path</code> and <code>#filename</code> to access + * the name of the file currently being read. + */ + +void +Init_IO() +{ +#ifdef __CYGWIN__ +#include <sys/cygwin.h> + static struct __cygwin_perfile pf[] = + { + {"", O_RDONLY | O_BINARY}, + {"", O_WRONLY | O_BINARY}, + {"", O_RDWR | O_BINARY}, + {"", O_APPEND | O_BINARY}, + {NULL, 0} + }; + cygwin_internal(CW_PERFILE, pf); +#endif + + rb_eIOError = rb_define_class("IOError", rb_eStandardError); + rb_eEOFError = rb_define_class("EOFError", rb_eIOError); + + id_write = rb_intern("write"); + id_read = rb_intern("read"); + id_getc = rb_intern("getc"); + + rb_define_global_function("syscall", rb_f_syscall, -1); + + rb_define_global_function("open", rb_f_open, -1); + rb_define_global_function("printf", rb_f_printf, -1); + rb_define_global_function("print", rb_f_print, -1); + rb_define_global_function("putc", rb_f_putc, 1); + rb_define_global_function("puts", rb_f_puts, -1); + rb_define_global_function("gets", rb_f_gets, -1); + rb_define_global_function("readline", rb_f_readline, -1); + rb_define_global_function("getc", rb_f_getc, 0); + rb_define_global_function("select", rb_f_select, -1); + + rb_define_global_function("readlines", rb_f_readlines, -1); + + rb_define_global_function("`", rb_f_backquote, 1); + + rb_define_global_function("p", rb_f_p, -1); + rb_define_method(rb_mKernel, "display", rb_obj_display, -1); + + rb_cIO = rb_define_class("IO", rb_cObject); + rb_include_module(rb_cIO, rb_mEnumerable); + + rb_define_alloc_func(rb_cIO, io_alloc); + rb_define_singleton_method(rb_cIO, "new", rb_io_s_new, -1); + rb_define_singleton_method(rb_cIO, "open", rb_io_s_open, -1); + rb_define_singleton_method(rb_cIO, "sysopen", rb_io_s_sysopen, -1); + rb_define_singleton_method(rb_cIO, "for_fd", rb_io_s_for_fd, -1); + rb_define_singleton_method(rb_cIO, "popen", rb_io_s_popen, -1); + rb_define_singleton_method(rb_cIO, "foreach", rb_io_s_foreach, -1); + rb_define_singleton_method(rb_cIO, "readlines", rb_io_s_readlines, -1); + rb_define_singleton_method(rb_cIO, "read", rb_io_s_read, -1); + rb_define_singleton_method(rb_cIO, "select", rb_f_select, -1); + rb_define_singleton_method(rb_cIO, "pipe", rb_io_s_pipe, 0); + + rb_define_method(rb_cIO, "initialize", rb_io_initialize, -1); + + rb_output_fs = Qnil; + rb_define_hooked_variable("$,", &rb_output_fs, 0, rb_str_setter); + + rb_global_variable(&rb_default_rs); + rb_rs = rb_default_rs = rb_str_new2("\n"); + rb_output_rs = Qnil; + OBJ_FREEZE(rb_default_rs); /* avoid modifying RS_default */ + rb_define_hooked_variable("$/", &rb_rs, 0, rb_str_setter); + rb_define_hooked_variable("$-0", &rb_rs, 0, rb_str_setter); + rb_define_hooked_variable("$\\", &rb_output_rs, 0, rb_str_setter); + + rb_define_hooked_variable("$.", &lineno, 0, lineno_setter); + rb_define_virtual_variable("$_", rb_lastline_get, rb_lastline_set); + + rb_define_method(rb_cIO, "initialize_copy", rb_io_init_copy, 1); + rb_define_method(rb_cIO, "reopen", rb_io_reopen, -1); + + rb_define_method(rb_cIO, "print", rb_io_print, -1); + rb_define_method(rb_cIO, "putc", rb_io_putc, 1); + rb_define_method(rb_cIO, "puts", rb_io_puts, -1); + rb_define_method(rb_cIO, "printf", rb_io_printf, -1); + + rb_define_method(rb_cIO, "each", rb_io_each_line, -1); + rb_define_method(rb_cIO, "each_line", rb_io_each_line, -1); + rb_define_method(rb_cIO, "each_byte", rb_io_each_byte, 0); + + rb_define_method(rb_cIO, "syswrite", rb_io_syswrite, 1); + rb_define_method(rb_cIO, "sysread", rb_io_sysread, -1); + + rb_define_method(rb_cIO, "fileno", rb_io_fileno, 0); + rb_define_alias(rb_cIO, "to_i", "fileno"); + rb_define_method(rb_cIO, "to_io", rb_io_to_io, 0); + + rb_define_method(rb_cIO, "fsync", rb_io_fsync, 0); + rb_define_method(rb_cIO, "sync", rb_io_sync, 0); + rb_define_method(rb_cIO, "sync=", rb_io_set_sync, 1); + + rb_define_method(rb_cIO, "lineno", rb_io_lineno, 0); + rb_define_method(rb_cIO, "lineno=", rb_io_set_lineno, 1); + + rb_define_method(rb_cIO, "readlines", rb_io_readlines, -1); + + rb_define_method(rb_cIO, "read_nonblock", io_read_nonblock, -1); + rb_define_method(rb_cIO, "write_nonblock", rb_io_write_nonblock, 1); + rb_define_method(rb_cIO, "readpartial", io_readpartial, -1); + rb_define_method(rb_cIO, "read", io_read, -1); + rb_define_method(rb_cIO, "write", io_write, 1); + rb_define_method(rb_cIO, "gets", rb_io_gets_m, -1); + rb_define_method(rb_cIO, "readline", rb_io_readline, -1); + rb_define_method(rb_cIO, "getc", rb_io_getc, 0); + rb_define_method(rb_cIO, "readchar", rb_io_readchar, 0); + rb_define_method(rb_cIO, "ungetc",rb_io_ungetc, 1); + rb_define_method(rb_cIO, "<<", rb_io_addstr, 1); + rb_define_method(rb_cIO, "flush", rb_io_flush, 0); + rb_define_method(rb_cIO, "tell", rb_io_tell, 0); + rb_define_method(rb_cIO, "seek", rb_io_seek_m, -1); + rb_define_const(rb_cIO, "SEEK_SET", INT2FIX(SEEK_SET)); + rb_define_const(rb_cIO, "SEEK_CUR", INT2FIX(SEEK_CUR)); + rb_define_const(rb_cIO, "SEEK_END", INT2FIX(SEEK_END)); + rb_define_method(rb_cIO, "rewind", rb_io_rewind, 0); + rb_define_method(rb_cIO, "pos", rb_io_tell, 0); + rb_define_method(rb_cIO, "pos=", rb_io_set_pos, 1); + rb_define_method(rb_cIO, "eof", rb_io_eof, 0); + rb_define_method(rb_cIO, "eof?", rb_io_eof, 0); + + rb_define_method(rb_cIO, "close", rb_io_close_m, 0); + rb_define_method(rb_cIO, "closed?", rb_io_closed, 0); + rb_define_method(rb_cIO, "close_read", rb_io_close_read, 0); + rb_define_method(rb_cIO, "close_write", rb_io_close_write, 0); + + rb_define_method(rb_cIO, "isatty", rb_io_isatty, 0); + rb_define_method(rb_cIO, "tty?", rb_io_isatty, 0); + rb_define_method(rb_cIO, "binmode", rb_io_binmode, 0); + rb_define_method(rb_cIO, "sysseek", rb_io_sysseek, -1); + + rb_define_method(rb_cIO, "ioctl", rb_io_ioctl, -1); + rb_define_method(rb_cIO, "fcntl", rb_io_fcntl, -1); + rb_define_method(rb_cIO, "pid", rb_io_pid, 0); + rb_define_method(rb_cIO, "inspect", rb_io_inspect, 0); + + rb_define_variable("$stdin", &rb_stdin); + rb_stdin = prep_stdio(stdin, FMODE_READABLE, rb_cIO); + rb_define_hooked_variable("$stdout", &rb_stdout, 0, stdout_setter); + rb_stdout = prep_stdio(stdout, FMODE_WRITABLE, rb_cIO); + rb_define_hooked_variable("$stderr", &rb_stderr, 0, stdout_setter); + rb_stderr = prep_stdio(stderr, FMODE_WRITABLE, rb_cIO); + rb_define_hooked_variable("$>", &rb_stdout, 0, stdout_setter); + orig_stdout = rb_stdout; + rb_deferr = orig_stderr = rb_stderr; + + /* variables to be removed in 1.8.1 */ + rb_define_hooked_variable("$defout", &rb_stdout, 0, defout_setter); + rb_define_hooked_variable("$deferr", &rb_stderr, 0, deferr_setter); + + /* constants to hold original stdin/stdout/stderr */ + rb_define_global_const("STDIN", rb_stdin); + rb_define_global_const("STDOUT", rb_stdout); + rb_define_global_const("STDERR", rb_stderr); + + rb_define_readonly_variable("$<", &argf); + argf = rb_obj_alloc(rb_cObject); + rb_extend_object(argf, rb_mEnumerable); + rb_define_global_const("ARGF", argf); + + rb_define_singleton_method(argf, "to_s", argf_to_s, 0); + + rb_define_singleton_method(argf, "fileno", argf_fileno, 0); + rb_define_singleton_method(argf, "to_i", argf_fileno, 0); + rb_define_singleton_method(argf, "to_io", argf_to_io, 0); + rb_define_singleton_method(argf, "each", argf_each_line, -1); + rb_define_singleton_method(argf, "each_line", argf_each_line, -1); + rb_define_singleton_method(argf, "each_byte", argf_each_byte, 0); + + rb_define_singleton_method(argf, "read", argf_read, -1); + rb_define_singleton_method(argf, "readlines", rb_f_readlines, -1); + rb_define_singleton_method(argf, "to_a", rb_f_readlines, -1); + rb_define_singleton_method(argf, "gets", rb_f_gets, -1); + rb_define_singleton_method(argf, "readline", rb_f_readline, -1); + rb_define_singleton_method(argf, "getc", argf_getc, 0); + rb_define_singleton_method(argf, "readchar", argf_readchar, 0); + rb_define_singleton_method(argf, "tell", argf_tell, 0); + rb_define_singleton_method(argf, "seek", argf_seek_m, -1); + rb_define_singleton_method(argf, "rewind", argf_rewind, 0); + rb_define_singleton_method(argf, "pos", argf_tell, 0); + rb_define_singleton_method(argf, "pos=", argf_set_pos, 1); + rb_define_singleton_method(argf, "eof", argf_eof, 0); + rb_define_singleton_method(argf, "eof?", argf_eof, 0); + rb_define_singleton_method(argf, "binmode", argf_binmode, 0); + + rb_define_singleton_method(argf, "filename", argf_filename, 0); + rb_define_singleton_method(argf, "path", argf_filename, 0); + rb_define_singleton_method(argf, "file", argf_file, 0); + rb_define_singleton_method(argf, "skip", argf_skip, 0); + rb_define_singleton_method(argf, "close", argf_close_m, 0); + rb_define_singleton_method(argf, "closed?", argf_closed, 0); + + rb_define_singleton_method(argf, "lineno", argf_lineno, 0); + rb_define_singleton_method(argf, "lineno=", argf_set_lineno, 1); + + rb_global_variable(¤t_file); + rb_define_readonly_variable("$FILENAME", &filename); + filename = rb_str_new2("-"); + + rb_define_virtual_variable("$-i", opt_i_get, opt_i_set); + +#if defined (_WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(__human68k__) + atexit(pipe_atexit); +#endif + + Init_File(); + + rb_define_method(rb_cFile, "initialize", rb_file_initialize, -1); + + rb_file_const("RDONLY", INT2FIX(O_RDONLY)); + rb_file_const("WRONLY", INT2FIX(O_WRONLY)); + rb_file_const("RDWR", INT2FIX(O_RDWR)); + rb_file_const("APPEND", INT2FIX(O_APPEND)); + rb_file_const("CREAT", INT2FIX(O_CREAT)); + rb_file_const("EXCL", INT2FIX(O_EXCL)); +#if defined(O_NDELAY) || defined(O_NONBLOCK) +# ifdef O_NONBLOCK + rb_file_const("NONBLOCK", INT2FIX(O_NONBLOCK)); +# else + rb_file_const("NONBLOCK", INT2FIX(O_NDELAY)); +# endif +#endif + rb_file_const("TRUNC", INT2FIX(O_TRUNC)); +#ifdef O_NOCTTY + rb_file_const("NOCTTY", INT2FIX(O_NOCTTY)); +#endif +#ifdef O_BINARY + rb_file_const("BINARY", INT2FIX(O_BINARY)); +#endif +#ifdef O_SYNC + rb_file_const("SYNC", INT2FIX(O_SYNC)); +#endif +} |