-/* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
- *
- * As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
- *
- * The exception is that, if you link the GUILE library with other files
- * to produce an executable, this does not by itself cause the
- * resulting executable to be covered by the GNU General Public License.
- * Your use of that executable is in no way restricted on account of
- * linking the GUILE library code into it.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This exception does not however invalidate any other reasons why
- * the executable file might be covered by the GNU General Public License.
- *
- * This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
- * code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
- * not apply to the code that you add in this way. To avoid misleading
- * anyone as to the status of such modified files, you must delete
- * this exception notice from them.
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * If you write modifications of your own for GUILE, it is your choice
- * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice. */
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
-/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
- gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
\f
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
#include <errno.h>
#include "libguile/_scm.h"
#include "libguile/fports.h"
#include "libguile/feature.h"
#include "libguile/ports.h"
-#include "libguile/root.h"
#include "libguile/strings.h"
#include "libguile/validate.h"
#include <fcntl.h>
-#ifdef HAVE_STRING_H
-#include <string.h>
+#ifdef HAVE_IO_H
+#include <io.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
\f
-#if defined (EAGAIN)
-#define SCM_MAYBE_EAGAIN || errno == EAGAIN
-#else
-#define SCM_MAYBE_EAGAIN
-#endif
-
-#if defined (EWOULDBLOCK)
-#define SCM_MAYBE_EWOULDBLOCK || errno == EWOULDBLOCK
-#else
-#define SCM_MAYBE_EWOULDBLOCK
-#endif
-
-/* MAYBE there is EAGAIN way of defining this macro but now I EWOULDBLOCK. */
-#define SCM_EBLOCK(errno) \
- (0 SCM_MAYBE_EAGAIN SCM_MAYBE_EWOULDBLOCK)
-
-SCM_DEFINE (scm_read_string_x_partial, "read-string!/partial", 1, 3, 0,
- (SCM str, SCM port_or_fdes, SCM start, SCM end),
- "Read characters from an fport or file descriptor into a\n"
- "string @var{str}. This procedure is scsh-compatible\n"
- "and can efficiently read large strings. It will:\n\n"
- "@itemize\n"
- "@item\n"
- "attempt to fill the entire string, unless the @var{start}\n"
- "and/or @var{end} arguments are supplied. i.e., @var{start}\n"
- "defaults to 0 and @var{end} defaults to\n"
- "@code{(string-length str)}\n"
- "@item\n"
- "use the current input port if @var{port_or_fdes} is not\n"
- "supplied.\n"
- "@item\n"
- "read any characters that are currently available,\n"
- "without waiting for the rest (short reads are possible).\n\n"
- "@item\n"
- "wait for as long as it needs to for the first character to\n"
- "become available, unless the port is in non-blocking mode\n"
- "@item\n"
- "return @code{#f} if end-of-file is encountered before reading\n"
- "any characters, otherwise return the number of characters\n"
- "read.\n"
- "@item\n"
- "return 0 if the port is in non-blocking mode and no characters\n"
- "are immediately available.\n"
- "@item\n"
- "return 0 if the request is for 0 bytes, with no\n"
- "end-of-file check\n"
- "@end itemize")
-#define FUNC_NAME s_scm_read_string_x_partial
-{
- char *dest;
- long read_len;
- long chars_read = 0;
- int fdes;
-
- {
- long offset;
- long last;
-
- SCM_VALIDATE_SUBSTRING_SPEC_COPY (1, str, dest, 3, start, offset,
- 4, end, last);
- dest += offset;
- read_len = last - offset;
- }
-
- if (SCM_INUMP (port_or_fdes))
- fdes = SCM_INUM (port_or_fdes);
- else
- {
- SCM port = SCM_UNBNDP (port_or_fdes) ? scm_cur_inp : port_or_fdes;
-
- SCM_VALIDATE_OPFPORT (2, port);
- SCM_VALIDATE_INPUT_PORT (2, port);
-
- /* if there's anything in the port buffers, use it, but then
- don't touch the file descriptor. otherwise the
- "return immediately if something is available" rule may
- be violated. */
- chars_read = scm_take_from_input_buffers (port, dest, read_len);
- fdes = SCM_FPORT_FDES (port);
- }
-
- if (chars_read == 0 && read_len > 0) /* don't confuse read_len == 0 with
- EOF. */
- {
- SCM_SYSCALL (chars_read = read (fdes, dest, read_len));
- if (chars_read == -1)
- {
- if (SCM_EBLOCK (errno))
- chars_read = 0;
- else
- SCM_SYSERROR;
- }
- else if (chars_read == 0)
- return SCM_BOOL_F;
- }
- return scm_long2num (chars_read);
-}
-#undef FUNC_NAME
-
SCM_DEFINE (scm_ftell, "ftell", 1, 0, 0,
- (SCM object),
- "Returns an integer representing the current position of @var{fd/port},\n"
- "measured from the beginning. Equivalent to:\n"
- "@smalllisp\n"
+ (SCM fd_port),
+ "Return an integer representing the current position of\n"
+ "@var{fd/port}, measured from the beginning. Equivalent to:\n"
+ "\n"
+ "@lisp\n"
"(seek port 0 SEEK_CUR)\n"
- "@end smalllisp")
+ "@end lisp")
#define FUNC_NAME s_scm_ftell
{
- return scm_seek (object, SCM_INUM0, SCM_MAKINUM (SEEK_CUR));
-}
-#undef FUNC_NAME
-
-
-#if (SCM_DEBUG_DEPRECATED == 0)
-
-SCM_DEFINE (scm_fseek, "fseek", 3, 0, 0,
- (SCM object, SCM offset, SCM whence),
- "Obsolete. Almost the same as seek, above, but the return value is\n"
- "unspecified.")
-#define FUNC_NAME s_scm_fseek
-{
- scm_seek (object, offset, whence);
- return SCM_UNSPECIFIED;
+ return scm_seek (fd_port, SCM_INUM0, SCM_MAKINUM (SEEK_CUR));
}
#undef FUNC_NAME
-#endif /* SCM_DEBUG_DEPRECATED == 0 */
-
-
SCM_DEFINE (scm_redirect_port, "redirect-port", 2, 0, 0,
(SCM old, SCM new),
"This procedure takes two ports and duplicates the underlying file\n"
#define FUNC_NAME s_scm_redirect_port
{
int ans, oldfd, newfd;
- struct scm_fport *fp;
+ scm_t_fport *fp;
old = SCM_COERCE_OUTPORT (old);
new = SCM_COERCE_OUTPORT (new);
- SCM_VALIDATE_OPFPORT (1,old);
- SCM_VALIDATE_OPFPORT (2,new);
+ SCM_VALIDATE_OPFPORT (1, old);
+ SCM_VALIDATE_OPFPORT (2, new);
oldfd = SCM_FPORT_FDES (old);
fp = SCM_FSTREAM (new);
newfd = fp->fdes;
if (oldfd != newfd)
{
- scm_port *pt = SCM_PTAB_ENTRY (new);
- scm_port *old_pt = SCM_PTAB_ENTRY (old);
- scm_ptob_descriptor *ptob = &scm_ptobs[SCM_PTOBNUM (new)];
+ scm_t_port *pt = SCM_PTAB_ENTRY (new);
+ scm_t_port *old_pt = SCM_PTAB_ENTRY (old);
+ scm_t_ptob_descriptor *ptob = &scm_ptobs[SCM_PTOBNUM (new)];
/* must flush to old fdes. */
if (pt->rw_active == SCM_PORT_WRITE)
SCM_DEFINE (scm_dup_to_fdes, "dup->fdes", 1, 1, 0,
(SCM fd_or_port, SCM fd),
- "Returns an integer file descriptor.")
+ "Return a new integer file descriptor referring to the open file\n"
+ "designated by @var{fd_or_port}, which must be either an open\n"
+ "file port or a file descriptor.")
#define FUNC_NAME s_scm_dup_to_fdes
{
int oldfd, newfd, rv;
oldfd = SCM_INUM (fd_or_port);
else
{
- SCM_VALIDATE_OPFPORT (1,fd_or_port);
+ SCM_VALIDATE_OPFPORT (1, fd_or_port);
oldfd = SCM_FPORT_FDES (fd_or_port);
}
SCM_DEFINE (scm_fileno, "fileno", 1, 0, 0,
(SCM port),
- "Returns the integer file descriptor underlying @var{port}.\n"
- "Does not change its revealed count.")
+ "Return the integer file descriptor underlying @var{port}. Does\n"
+ "not change its revealed count.")
#define FUNC_NAME s_scm_fileno
{
port = SCM_COERCE_OUTPORT (port);
- SCM_VALIDATE_OPFPORT (1,port);
+ SCM_VALIDATE_OPFPORT (1, port);
return SCM_MAKINUM (SCM_FPORT_FDES (port));
}
#undef FUNC_NAME
/* GJB:FIXME:: why does this not throw
an error if the arg is not a port?
This proc as is would be better names isattyport?
- if it is not going to assume that the arg is a port */
+ if it is not going to assume that the arg is a port
+
+ [cmm] I don't see any problem with the above. why should a type
+ predicate assume _anything_ about its argument?
+*/
SCM_DEFINE (scm_isatty_p, "isatty?", 1, 0, 0,
(SCM port),
- "Returns @code{#t} if @var{port} is using a serial\n"
- "non-file device, otherwise @code{#f}.")
+ "Return @code{#t} if @var{port} is using a serial non--file\n"
+ "device, otherwise @code{#f}.")
#define FUNC_NAME s_scm_isatty_p
{
int rv;
SCM_DEFINE (scm_fdopen, "fdopen", 2, 0, 0,
(SCM fdes, SCM modes),
- "Returns a new port based on the file descriptor @var{fdes}.\n"
- "Modes are given by the string @var{modes}. The revealed count of the port\n"
- "is initialized to zero. The modes string is the same as that accepted\n"
- "by @ref{File Ports, open-file}.")
+ "Return a new port based on the file descriptor @var{fdes}.\n"
+ "Modes are given by the string @var{modes}. The revealed count\n"
+ "of the port is initialized to zero. The modes string is the\n"
+ "same as that accepted by @ref{File Ports, open-file}.")
#define FUNC_NAME s_scm_fdopen
{
- SCM_VALIDATE_INUM (1,fdes);
+ SCM_VALIDATE_INUM (1, fdes);
SCM_VALIDATE_STRING (2, modes);
- SCM_STRING_COERCE_0TERMINATION_X (modes);
return scm_fdes_to_port (SCM_INUM (fdes), SCM_STRING_CHARS (modes), SCM_BOOL_F);
}
"required value or @code{#t} if it was moved.")
#define FUNC_NAME s_scm_primitive_move_to_fdes
{
- struct scm_fport *stream;
+ scm_t_fport *stream;
int old_fd;
int new_fd;
int rv;
port = SCM_COERCE_OUTPORT (port);
- SCM_VALIDATE_OPFPORT (1,port);
- SCM_VALIDATE_INUM (2,fd);
+ SCM_VALIDATE_OPFPORT (1, port);
+ SCM_VALIDATE_INUM (2, fd);
stream = SCM_FSTREAM (port);
old_fd = stream->fdes;
new_fd = SCM_INUM (fd);
/* Return a list of ports using a given file descriptor. */
SCM_DEFINE (scm_fdes_to_ports, "fdes->ports", 1, 0, 0,
(SCM fd),
- "Returns a list of existing ports which have @var{fdes} as an\n"
- "underlying file descriptor, without changing their revealed counts.")
+ "Return a list of existing ports which have @var{fdes} as an\n"
+ "underlying file descriptor, without changing their revealed\n"
+ "counts.")
#define FUNC_NAME s_scm_fdes_to_ports
{
SCM result = SCM_EOL;
int int_fd;
- int i;
+ long i;
- SCM_VALIDATE_INUM_COPY (1,fd,int_fd);
+ SCM_VALIDATE_INUM_COPY (1, fd, int_fd);
- for (i = 0; i < scm_port_table_size; i++)
+ scm_mutex_lock (&scm_i_port_table_mutex);
+ for (i = 0; i < scm_i_port_table_size; i++)
{
- if (SCM_OPFPORTP (scm_port_table[i]->port)
- && ((struct scm_fport *) scm_port_table[i]->stream)->fdes == int_fd)
- result = scm_cons (scm_port_table[i]->port, result);
+ if (SCM_OPFPORTP (scm_i_port_table[i]->port)
+ && ((scm_t_fport *) scm_i_port_table[i]->stream)->fdes == int_fd)
+ result = scm_cons (scm_i_port_table[i]->port, result);
}
+ scm_mutex_unlock (&scm_i_port_table_mutex);
return result;
}
#undef FUNC_NAME
{
scm_add_feature ("i/o-extensions");
-#ifndef SCM_MAGIC_SNARFER
#include "libguile/ioext.x"
-#endif
}
HCoop / bpt / guile.git / blobdiff