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* genio.c, genio.h: move contents into ports.c, ports.h. The
division wasn't useful. * * ports.c (scm_drain_input): new procedure. ports.h: prototype. * fports.c (FPORT_READ_SAFE, FPORT_WRITE_SAFE, FPORT_ALL_OKAY, pre_read, pre_write): removed. (local_fputc, local_fputs, local_ffwrite): use write, not stdio. (scm_standard_stream_to_port): change first arg from FILE * to int fdes. (local_fflush): flush fdes, not FILE *. * fports.h (SCM_NOFTELL): removed. * genio.c, ports.c: don't include filesys.h. * genio.c (scm_getc): don't use scm_internal_select if FPORT. do it in fports.c:local_fgetc. * genio.c: don't use SCM_SYSCALL when calling ptob procedures. do it where it's needed in the port smobs. * filesys.c (scm_input_waiting_p): moved to fports.c, stdio buffer support removed. take SCM arg, not FILE *. * filesys.h: prototype moved too. * fports.c (scm_fdes_to_port): new procedure. (local_fgetc): use read not fgetc. (local_fclose): use close, not fclose. (local_fgets): use read, not fgets * fports.h: prototype for scm_fdes_to_port. * fports.h (scm_fport): new struct. * fports.c (scm_open_file): use open, not fopen. #include fcntl.h * ports.h (struct scm_port_table): change stream from SCM to void *. * ports.c (scm_add_to_port_table): check for memory allocation error. (scm_prinport): remove MSDOS hair. (scm_void_port): set stream to 0 instead of SCM_BOOL_F. (scm_close_port): don't throw errors: do it in fports.c.
This commit is contained in:
Jim Blandy
parent
c45acc349c
commit
1c3abaea89
1 changed files with 0 additions and 208 deletions
208
libguile/genio.c
208
libguile/genio.c
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/* Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include <stdio.h>
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#include "_scm.h"
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#include "chars.h"
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#ifdef GUILE_ISELECT
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#include "filesys.h"
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#endif
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#include "genio.h"
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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void
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scm_putc (c, port)
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int c;
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SCM port;
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{
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scm_sizet i = SCM_PTOBNUM (port);
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SCM_SYSCALL ((scm_ptobs[i].fputc) (c, port));
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}
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void
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scm_puts (s, port)
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char *s;
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SCM port;
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{
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scm_sizet i = SCM_PTOBNUM (port);
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SCM_SYSCALL ((scm_ptobs[i].fputs) (s, port));
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}
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void
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scm_lfwrite (ptr, size, port)
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char *ptr;
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scm_sizet size;
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SCM port;
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{
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scm_sizet i = SCM_PTOBNUM (port);
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SCM_SYSCALL (scm_ptobs[i].fwrite (ptr, size, 1, port));
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}
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void
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scm_fflush (port)
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SCM port;
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{
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scm_sizet i = SCM_PTOBNUM (port);
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(scm_ptobs[i].fflush) (port);
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}
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int
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scm_getc (port)
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SCM port;
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{
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SCM f;
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int c;
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scm_sizet i;
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if (SCM_CRDYP (port))
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{
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c = SCM_CGETUN (port);
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SCM_TRY_CLRDY (port); /* Clear ungetted char */
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}
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else
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{
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f = SCM_STREAM (port);
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i = SCM_PTOBNUM (port);
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#ifdef GUILE_ISELECT
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if (SCM_FPORTP (port) && !scm_input_waiting_p ((FILE *) f, "scm_getc"))
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{
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int n;
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SELECT_TYPE readfds;
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int fd = fileno ((FILE *) f);
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do
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{
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FD_ZERO (&readfds);
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FD_SET (fd, &readfds);
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n = scm_internal_select (fd + 1, &readfds, NULL, NULL, NULL);
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}
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while (n == -1 && errno == EINTR);
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}
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#endif
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SCM_SYSCALL (c = (scm_ptobs[i].fgetc) (port));
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}
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if (c == '\n')
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{
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SCM_INCLINE (port);
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}
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else if (c == '\t')
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{
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SCM_TABCOL (port);
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}
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else
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{
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SCM_INCCOL (port);
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}
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return c;
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}
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void
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scm_ungetc (c, port)
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int c;
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SCM port;
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{
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SCM_CUNGET (c, port);
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if (c == '\n')
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{
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/* What should col be in this case?
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* We'll leave it at -1.
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*/
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SCM_LINUM (port) -= 1;
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}
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else
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SCM_COL(port) -= 1;
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}
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void
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scm_ungets (s, n, port)
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char *s;
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int n;
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SCM port;
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{
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/* This is simple minded and inefficient, but unreading strings is
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* probably not a common operation, and remember that line and
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* column numbers have to be handled...
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*
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* Please feel freee to write an optimized version!
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*/
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while (n--)
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scm_ungetc (s[n], port);
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}
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char *
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scm_do_read_line (port, len)
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SCM port;
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int *len;
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{
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char *s;
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scm_sizet i;
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i = SCM_PTOBNUM (port);
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SCM_SYSCALL (s = (scm_ptobs[i].fgets) (port, len));
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/* We should never get an empty string. Every line has a newline at
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the end, except for the last one. If the last line has no
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newline and is empty, then that's just an ordinary EOF, and we
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should have s == NULL. But this seems obscure to me, so we check
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this here, to protect ourselves from odd port implementations. */
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if (s && *len <= 0)
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abort ();
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/* If we're not at EOF, and there was a newline at the end of the
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string, increment the line counter. */
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if (s && s[*len - 1] == '\n')
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SCM_INCLINE(port);
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return s;
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}
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