/* Synchronous subprocess invocation for GNU Emacs.
- Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994 Free Software Foundation, Inc.
+ Copyright (C) 1985, 86, 87, 88, 93, 94, 95 Free Software Foundation, Inc.
This file is part of GNU Emacs.
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
#include <signal.h>
#include <errno.h>
-#include <stdio.h>
#include <config.h>
+#include <stdio.h>
extern int errno;
extern char *strerror ();
#include <sys/types.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
#include <sys/file.h>
#ifdef USG5
#define INCLUDED_FCNTL
#include <fcntl.h>
#endif
+#ifdef WINDOWSNT
+#define NOMINMAX
+#include <windows.h>
+#include <stdlib.h> /* for proper declaration of environ */
+#include <fcntl.h>
+#include "w32.h"
+#define _P_NOWAIT 1 /* from process.h */
+#endif
+
#ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
#define INCLUDED_FCNTL
#include <fcntl.h>
#include "lisp.h"
#include "commands.h"
#include "buffer.h"
-#include <paths.h>
+#include "charset.h"
+#include "ccl.h"
+#include "coding.h"
+#include <epaths.h>
#include "process.h"
#include "syssignal.h"
#include "systty.h"
+#ifdef MSDOS
+#include "msdos.h"
+#endif
+
#ifdef VMS
extern noshare char **environ;
#else
#define max(a, b) ((a) > (b) ? (a) : (b))
-#ifdef MSDOS
-/* When we are starting external processes we need to know whether they
- take binary input (no conversion) or text input (\n is converted to
- \r\n). Similar for output: if newlines are written as \r\n then it's
- text process output, otherwise it's binary. */
-Lisp_Object Vbinary_process_input;
-Lisp_Object Vbinary_process_output;
-#endif
-
Lisp_Object Vexec_path, Vexec_directory, Vdata_directory, Vdoc_directory;
Lisp_Object Vconfigure_info_directory;
+Lisp_Object Vtemp_file_name_pattern;
Lisp_Object Vshell_file_name;
Lisp_Object Vprocess_environment;
-#ifdef MSDOS
+#ifdef DOS_NT
Lisp_Object Qbuffer_file_type;
-#endif
+#endif /* DOS_NT */
/* True iff we are about to fork off a synchronous process or if we
are waiting for it. */
int synch_process_retcode;
extern Lisp_Object Vdoc_file_name;
+
+extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system;
\f
/* Clean up when exiting Fcall_process.
On MSDOS, delete the temporary file on any kind of termination.
call_process_cleanup (fdpid)
Lisp_Object fdpid;
{
-#ifdef MSDOS
+#if defined (MSDOS) || defined (macintosh)
/* for MSDOS fdpid is really (fd . tempfile) */
register Lisp_Object file;
file = Fcdr (fdpid);
close (XFASTINT (Fcar (fdpid)));
if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0)
unlink (XSTRING (file)->data);
-#else /* not MSDOS */
+#else /* not MSDOS and not macintosh */
register int pid = XFASTINT (Fcdr (fdpid));
-
if (call_process_exited)
{
close (XFASTINT (Fcar (fdpid)));
DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0,
"Call PROGRAM synchronously in separate process.\n\
+The remaining arguments are optional.\n\
The program's input comes from file INFILE (nil means `/dev/null').\n\
Insert output in BUFFER before point; t means current buffer;\n\
nil for BUFFER means discard it; 0 means discard and don't wait.\n\
+BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\
+REAL-BUFFER says what to do with standard output, as above,\n\
+while STDERR-FILE says what to do with standard error in the child.\n\
+STDERR-FILE may be nil (discard standard error output),\n\
+t (mix it with ordinary output), or a file name string.\n\
+\n\
Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\
Remaining arguments are strings passed as command arguments to PROGRAM.\n\
-If BUFFER is 0, returns immediately with value nil.\n\
-Otherwise waits for PROGRAM to terminate\n\
+\n\
+If BUFFER is 0, `call-process' returns immediately with value nil.\n\
+Otherwise it waits for PROGRAM to terminate\n\
and returns a numeric exit status or a signal description string.\n\
If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.")
(nargs, args)
int fd[2];
int filefd;
register int pid;
- char buf[1024];
+ char buf[16384];
+ char *bufptr = buf;
+ int bufsize = 16384;
int count = specpdl_ptr - specpdl;
+
register unsigned char **new_argv
= (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *));
struct buffer *old = current_buffer;
+ /* File to use for stderr in the child.
+ t means use same as standard output. */
+ Lisp_Object error_file;
#ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
char *outf, *tempfile;
int outfilefd;
#endif
+#ifdef macintosh
+ char *tempfile;
+ int outfilefd;
+#endif
#if 0
int mask;
#endif
+ struct coding_system process_coding; /* coding-system of process output */
+ struct coding_system argument_coding; /* coding-system of arguments */
+ /* Set to the return value of Ffind_operation_coding_system. */
+ Lisp_Object coding_systems;
+
+ /* Qt denotes that Ffind_operation_coding_system is not yet called. */
+ coding_systems = Qt;
+
CHECK_STRING (args[0], 0);
+ error_file = Qt;
+
#ifndef subprocesses
/* Without asynchronous processes we cannot have BUFFER == 0. */
- if (nargs >= 3 && XTYPE (args[2]) == Lisp_Int)
+ if (nargs >= 3
+ && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2])))
error ("Operating system cannot handle asynchronous subprocesses");
#endif /* subprocesses */
+ /* Decide the coding-system for giving arguments. */
+ {
+ Lisp_Object val, *args2;
+ int i;
+
+ /* If arguments are supplied, we may have to encode them. */
+ if (nargs >= 5)
+ {
+ int must_encode = 0;
+
+ for (i = 4; i < nargs; i++)
+ CHECK_STRING (args[i], i);
+
+ for (i = 4; i < nargs; i++)
+ if (STRING_MULTIBYTE (args[i]))
+ must_encode = 1;
+
+ if (!NILP (Vcoding_system_for_write))
+ val = Vcoding_system_for_write;
+ else if (! must_encode)
+ val = Qnil;
+ else
+ {
+ args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2);
+ args2[0] = Qcall_process;
+ for (i = 0; i < nargs; i++) args2[i + 1] = args[i];
+ coding_systems = Ffind_operation_coding_system (nargs + 1, args2);
+ if (CONSP (coding_systems))
+ val = XCDR (coding_systems);
+ else if (CONSP (Vdefault_process_coding_system))
+ val = XCDR (Vdefault_process_coding_system);
+ else
+ val = Qnil;
+ }
+ setup_coding_system (Fcheck_coding_system (val), &argument_coding);
+ }
+ }
+
if (nargs >= 2 && ! NILP (args[1]))
{
infile = Fexpand_file_name (args[1], current_buffer->directory);
if (nargs >= 3)
{
- register Lisp_Object tem;
+ buffer = args[2];
- buffer = tem = args[2];
- if (!(EQ (tem, Qnil)
- || EQ (tem, Qt)
- || XFASTINT (tem) == 0))
+ /* If BUFFER is a list, its meaning is
+ (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */
+ if (CONSP (buffer))
{
- buffer = Fget_buffer (tem);
+ if (CONSP (XCDR (buffer)))
+ {
+ Lisp_Object stderr_file;
+ stderr_file = XCAR (XCDR (buffer));
+
+ if (NILP (stderr_file) || EQ (Qt, stderr_file))
+ error_file = stderr_file;
+ else
+ error_file = Fexpand_file_name (stderr_file, Qnil);
+ }
+
+ buffer = XCAR (buffer);
+ }
+
+ if (!(EQ (buffer, Qnil)
+ || EQ (buffer, Qt)
+ || INTEGERP (buffer)))
+ {
+ Lisp_Object spec_buffer;
+ spec_buffer = buffer;
+ buffer = Fget_buffer_create (buffer);
+ /* Mention the buffer name for a better error message. */
+ if (NILP (buffer))
+ CHECK_BUFFER (spec_buffer, 2);
CHECK_BUFFER (buffer, 2);
}
}
report_file_error ("Searching for program", Fcons (args[0], Qnil));
}
new_argv[0] = XSTRING (path)->data;
- {
- register int i;
- for (i = 4; i < nargs; i++)
- {
- CHECK_STRING (args[i], i);
- new_argv[i - 3] = XSTRING (args[i])->data;
- }
- new_argv[i - 3] = 0;
- }
+ if (nargs > 4)
+ {
+ register int i;
-#ifdef MSDOS /* MW, July 1993 */
- /* These vars record information from process termination.
- Clear them now before process can possibly terminate,
- to avoid timing error if process terminates soon. */
- synch_process_death = 0;
- synch_process_retcode = 0;
+ if (! CODING_REQUIRE_ENCODING (&argument_coding))
+ {
+ for (i = 4; i < nargs; i++)
+ new_argv[i - 3] = XSTRING (args[i])->data;
+ }
+ else
+ {
+ /* We must encode the arguments. */
+ struct gcpro gcpro1, gcpro2, gcpro3;
- if ((outf = egetenv ("TMP")) || (outf = egetenv ("TEMP")))
+ GCPRO3 (infile, buffer, current_dir);
+ for (i = 4; i < nargs; i++)
+ {
+ int size = encoding_buffer_size (&argument_coding,
+ STRING_BYTES (XSTRING (args[i])));
+ unsigned char *dummy1 = (unsigned char *) alloca (size);
+
+ /* The Irix 4.0 compiler barfs if we eliminate dummy. */
+ new_argv[i - 3] = dummy1;
+ argument_coding.mode |= CODING_MODE_LAST_BLOCK;
+ encode_coding (&argument_coding,
+ XSTRING (args[i])->data,
+ new_argv[i - 3],
+ STRING_BYTES (XSTRING (args[i])),
+ size);
+ new_argv[i - 3][argument_coding.produced] = 0;
+ /* We have to initialize CCL program status again. */
+ if (argument_coding.type == coding_type_ccl)
+ setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil);
+ }
+ UNGCPRO;
+ }
+ new_argv[nargs - 3] = 0;
+ }
+ else
+ new_argv[1] = 0;
+
+#ifdef MSDOS /* MW, July 1993 */
+ if ((outf = egetenv ("TMPDIR")))
strcpy (tempfile = alloca (strlen (outf) + 20), outf);
else
{
if (outfilefd < 0)
{
close (filefd);
- report_file_error ("Opening process output file", Fcons (tempfile, Qnil));
+ report_file_error ("Opening process output file",
+ Fcons (build_string (tempfile), Qnil));
}
-#endif
+ fd[0] = filefd;
+ fd[1] = outfilefd;
+#endif /* MSDOS */
+
+#ifdef macintosh
+ /* Since we don't have pipes on the Mac, create a temporary file to
+ hold the output of the subprocess. */
+ tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1);
+ bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile,
+ STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1);
+
+ mktemp (tempfile);
- if (XTYPE (buffer) == Lisp_Int)
+ outfilefd = creat (tempfile, S_IREAD | S_IWRITE);
+ if (outfilefd < 0)
+ {
+ close (filefd);
+ report_file_error ("Opening process output file",
+ Fcons (build_string (tempfile), Qnil));
+ }
+ fd[0] = filefd;
+ fd[1] = outfilefd;
+#endif /* macintosh */
+
+ if (INTEGERP (buffer))
fd[1] = open (NULL_DEVICE, O_WRONLY), fd[0] = -1;
else
{
#ifndef MSDOS
+#ifndef macintosh
pipe (fd);
#endif
+#endif
#if 0
/* Replaced by close_process_descs */
set_exclusive_use (fd[0]);
Protect it from permanent change. */
register char **save_environ = environ;
register int fd1 = fd[1];
+ int fd_error = fd1;
#if 0 /* Some systems don't have sigblock. */
mask = sigblock (sigmask (SIGCHLD));
synch_process_death = 0;
synch_process_retcode = 0;
+ if (NILP (error_file))
+ fd_error = open (NULL_DEVICE, O_WRONLY);
+ else if (STRINGP (error_file))
+ {
+#ifdef DOS_NT
+ fd_error = open (XSTRING (error_file)->data,
+ O_WRONLY | O_TRUNC | O_CREAT | O_TEXT,
+ S_IREAD | S_IWRITE);
+#else /* not DOS_NT */
+ fd_error = creat (XSTRING (error_file)->data, 0666);
+#endif /* not DOS_NT */
+ }
+
+ if (fd_error < 0)
+ {
+ close (filefd);
+ if (fd[0] != filefd)
+ close (fd[0]);
+ if (fd1 >= 0)
+ close (fd1);
+#ifdef MSDOS
+ unlink (tempfile);
+#endif
+ report_file_error ("Cannot redirect stderr",
+ Fcons ((NILP (error_file)
+ ? build_string (NULL_DEVICE) : error_file),
+ Qnil));
+ }
+
+ current_dir = ENCODE_FILE (current_dir);
+
+#ifdef macintosh
+ {
+ /* Call run_mac_command in sysdep.c here directly instead of doing
+ a child_setup as for MSDOS and other platforms. Note that this
+ code does not handle passing the environment to the synchronous
+ Mac subprocess. */
+ char *infn, *outfn, *errfn, *currdn;
+
+ /* close these files so subprocess can write to them */
+ close (outfilefd);
+ if (fd_error != outfilefd)
+ close (fd_error);
+ fd1 = -1; /* No harm in closing that one! */
+
+ infn = XSTRING (infile)->data;
+ outfn = tempfile;
+ if (NILP (error_file))
+ errfn = NULL_DEVICE;
+ else if (EQ (Qt, error_file))
+ errfn = outfn;
+ else
+ errfn = XSTRING (error_file)->data;
+ currdn = XSTRING (current_dir)->data;
+ pid = run_mac_command (new_argv, currdn, infn, outfn, errfn);
+
+ /* Record that the synchronous process exited and note its
+ termination status. */
+ synch_process_alive = 0;
+ synch_process_retcode = pid;
+ if (synch_process_retcode < 0) /* means it couldn't be exec'ed */
+ synch_process_death = strerror (errno);
+
+ /* Since CRLF is converted to LF within `decode_coding', we can
+ always open a file with binary mode. */
+ fd[0] = open (tempfile, O_BINARY);
+ if (fd[0] < 0)
+ {
+ unlink (tempfile);
+ close (filefd);
+ report_file_error ("Cannot re-open temporary file", Qnil);
+ }
+ }
+#else /* not macintosh */
#ifdef MSDOS /* MW, July 1993 */
- /* ??? Someone who knows MSDOG needs to check whether this properly
- closes all descriptors that it opens. */
- pid = run_msdos_command (new_argv, current_dir, filefd, outfilefd);
+ /* Note that on MSDOS `child_setup' actually returns the child process
+ exit status, not its PID, so we assign it to `synch_process_retcode'
+ below. */
+ pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv,
+ 0, current_dir);
+
+ /* Record that the synchronous process exited and note its
+ termination status. */
+ synch_process_alive = 0;
+ synch_process_retcode = pid;
+ if (synch_process_retcode < 0) /* means it couldn't be exec'ed */
+ synch_process_death = strerror (errno);
+
close (outfilefd);
+ if (fd_error != outfilefd)
+ close (fd_error);
fd1 = -1; /* No harm in closing that one! */
- fd[0] = open (tempfile, NILP (Vbinary_process_output) ? O_TEXT : O_BINARY);
+ /* Since CRLF is converted to LF within `decode_coding', we can
+ always open a file with binary mode. */
+ fd[0] = open (tempfile, O_BINARY);
if (fd[0] < 0)
{
unlink (tempfile);
report_file_error ("Cannot re-open temporary file", Qnil);
}
#else /* not MSDOS */
+#ifdef WINDOWSNT
+ pid = child_setup (filefd, fd1, fd_error, (char **) new_argv,
+ 0, current_dir);
+#else /* not WINDOWSNT */
pid = vfork ();
if (pid == 0)
{
if (fd[0] >= 0)
close (fd[0]);
-#ifdef USG
+#ifdef HAVE_SETSID
+ setsid ();
+#endif
+#if defined (USG) && !defined (BSD_PGRPS)
setpgrp ();
#else
setpgrp (pid, pid);
#endif /* USG */
- child_setup (filefd, fd1, fd1, new_argv, 0, current_dir);
+ child_setup (filefd, fd1, fd_error, (char **) new_argv,
+ 0, current_dir);
}
+#endif /* not WINDOWSNT */
+
+ /* The MSDOS case did this already. */
+ if (fd_error >= 0)
+ close (fd_error);
#endif /* not MSDOS */
+#endif /* not macintosh */
environ = save_environ;
/* Close most of our fd's, but not fd[0]
since we will use that to read input from. */
close (filefd);
- if (fd1 >= 0)
+ if (fd1 >= 0 && fd1 != fd_error)
close (fd1);
}
report_file_error ("Doing vfork", Qnil);
}
- if (XTYPE (buffer) == Lisp_Int)
+ if (INTEGERP (buffer))
{
if (fd[0] >= 0)
close (fd[0]);
/* Enable sending signal if user quits below. */
call_process_exited = 0;
-#ifdef MSDOS
+#if defined(MSDOS) || defined(macintosh)
/* MSDOS needs different cleanup information. */
record_unwind_protect (call_process_cleanup,
Fcons (make_number (fd[0]), build_string (tempfile)));
#else
record_unwind_protect (call_process_cleanup,
Fcons (make_number (fd[0]), make_number (pid)));
-#endif /* not MSDOS */
+#endif /* not MSDOS and not macintosh */
- if (XTYPE (buffer) == Lisp_Buffer)
+ if (BUFFERP (buffer))
Fset_buffer (buffer);
+ if (NILP (buffer))
+ {
+ /* If BUFFER is nil, we must read process output once and then
+ discard it, so setup coding system but with nil. */
+ setup_coding_system (Qnil, &process_coding);
+ }
+ else
+ {
+ Lisp_Object val, *args2;
+
+ val = Qnil;
+ if (!NILP (Vcoding_system_for_read))
+ val = Vcoding_system_for_read;
+ else
+ {
+ if (EQ (coding_systems, Qt))
+ {
+ int i;
+
+ args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2);
+ args2[0] = Qcall_process;
+ for (i = 0; i < nargs; i++) args2[i + 1] = args[i];
+ coding_systems
+ = Ffind_operation_coding_system (nargs + 1, args2);
+ }
+ if (CONSP (coding_systems))
+ val = XCAR (coding_systems);
+ else if (CONSP (Vdefault_process_coding_system))
+ val = XCAR (Vdefault_process_coding_system);
+ else
+ val = Qnil;
+ }
+ setup_coding_system (Fcheck_coding_system (val), &process_coding);
+ /* In unibyte mode, character code conversion should not take
+ place but EOL conversion should. So, setup raw-text or one
+ of the subsidiary according to the information just setup. */
+ if (NILP (current_buffer->enable_multibyte_characters)
+ && !NILP (val))
+ setup_raw_text_coding_system (&process_coding);
+ }
+
immediate_quit = 1;
QUIT;
{
register int nread;
int first = 1;
+ int total_read = 0;
+ int carryover = 0;
+ int display_on_the_fly = !NILP (display) && INTERACTIVE;
+ struct coding_system saved_coding;
- while ((nread = read (fd[0], buf, sizeof buf)) > 0)
+ saved_coding = process_coding;
+
+ while (1)
{
+ /* Repeatedly read until we've filled as much as possible
+ of the buffer size we have. But don't read
+ less than 1024--save that for the next bufferful. */
+ nread = carryover;
+ while (nread < bufsize - 1024)
+ {
+ int this_read = read (fd[0], bufptr + nread, bufsize - nread);
+
+ if (this_read < 0)
+ goto give_up;
+
+ if (this_read == 0)
+ {
+ process_coding.mode |= CODING_MODE_LAST_BLOCK;
+ break;
+ }
+
+ nread += this_read;
+ total_read += this_read;
+
+ if (display_on_the_fly)
+ break;
+ }
+
+ /* Now NREAD is the total amount of data in the buffer. */
immediate_quit = 0;
+
if (!NILP (buffer))
- insert (buf, nread);
+ {
+ if (process_coding.type == coding_type_no_conversion)
+ insert (bufptr, nread);
+ else
+ { /* We have to decode the input. */
+ int size = decoding_buffer_size (&process_coding, nread);
+ char *decoding_buf = (char *) xmalloc (size);
+
+ decode_coding (&process_coding, bufptr, decoding_buf,
+ nread, size);
+ if (display_on_the_fly
+ && saved_coding.type == coding_type_undecided
+ && process_coding.type != coding_type_undecided)
+ {
+ /* We have detected some coding system. But,
+ there's a possibility that the detection was
+ done by insufficient data. So, we give up
+ displaying on the fly. */
+ xfree (decoding_buf);
+ display_on_the_fly = 0;
+ process_coding = saved_coding;
+ carryover = nread;
+ continue;
+ }
+ if (process_coding.produced > 0)
+ insert (decoding_buf, process_coding.produced);
+ xfree (decoding_buf);
+ carryover = nread - process_coding.consumed;
+ if (carryover > 0)
+ {
+ /* As CARRYOVER should not be that large, we had
+ better avoid overhead of bcopy. */
+ char *p = bufptr + process_coding.consumed;
+ char *pend = p + carryover;
+ char *dst = bufptr;
+
+ while (p < pend) *dst++ = *p++;
+ }
+ }
+ }
+ if (process_coding.mode & CODING_MODE_LAST_BLOCK)
+ {
+ if (carryover > 0)
+ insert (bufptr, carryover);
+ break;
+ }
+
+ /* Make the buffer bigger as we continue to read more data,
+ but not past 64k. */
+ if (bufsize < 64 * 1024 && total_read > 32 * bufsize)
+ {
+ bufsize *= 2;
+ bufptr = (char *) alloca (bufsize);
+ }
+
if (!NILP (display) && INTERACTIVE)
{
if (first)
immediate_quit = 1;
QUIT;
}
+ give_up: ;
+
+ Vlast_coding_system_used = process_coding.symbol;
+
+ /* If the caller required, let the buffer inherit the
+ coding-system used to decode the process output. */
+ if (inherit_process_coding_system)
+ call1 (intern ("after-insert-file-set-buffer-file-coding-system"),
+ make_number (total_read));
}
/* Wait for it to terminate, unless it already has. */
delete_temp_file (name)
Lisp_Object name;
{
- unlink (XSTRING (name)->data);
+ /* Use Fdelete_file (indirectly) because that runs a file name handler.
+ We did that when writing the file, so we should do so when deleting. */
+ internal_delete_file (name);
}
DEFUN ("call-process-region", Fcall_process_region, Scall_process_region,
3, MANY, 0,
"Send text from START to END to a synchronous process running PROGRAM.\n\
+The remaining arguments are optional.\n\
Delete the text if fourth arg DELETE is non-nil.\n\
+\n\
Insert output in BUFFER before point; t means current buffer;\n\
nil for BUFFER means discard it; 0 means discard and don't wait.\n\
+BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\
+REAL-BUFFER says what to do with standard output, as above,\n\
+while STDERR-FILE says what to do with standard error in the child.\n\
+STDERR-FILE may be nil (discard standard error output),\n\
+t (mix it with ordinary output), or a file name string.\n\
+\n\
Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\
Remaining args are passed to PROGRAM at startup as command args.\n\
-If BUFFER is nil, returns immediately with value nil.\n\
-Otherwise waits for PROGRAM to terminate\n\
+\n\
+If BUFFER is nil, `call-process-region' returns immediately with value nil.\n\
+Otherwise it waits for PROGRAM to terminate\n\
and returns a numeric exit status or a signal description string.\n\
If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.")
(nargs, args)
int nargs;
register Lisp_Object *args;
{
- register Lisp_Object filename_string, start, end;
-#ifdef MSDOS
- char *tempfile;
-#else
- char tempfile[20];
-#endif
+ struct gcpro gcpro1;
+ Lisp_Object filename_string;
+ register Lisp_Object start, end;
int count = specpdl_ptr - specpdl;
-#ifdef MSDOS
+ /* Qt denotes we have not yet called Ffind_operation_coding_system. */
+ Lisp_Object coding_systems;
+ Lisp_Object val, *args2;
+ int i;
+#ifdef DOS_NT
+ char *tempfile;
char *outf = '\0';
- if ((outf = egetenv ("TMP")) || (outf = egetenv ("TEMP")))
+ if ((outf = egetenv ("TMPDIR"))
+ || (outf = egetenv ("TMP"))
+ || (outf = egetenv ("TEMP")))
strcpy (tempfile = alloca (strlen (outf) + 20), outf);
else
{
tempfile = alloca (20);
*tempfile = '\0';
}
- dostounix_filename (tempfile);
- if (tempfile[strlen (tempfile) - 1] != '/')
+ if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1]))
strcat (tempfile, "/");
- strcat (tempfile, "detmp.XXX");
-#else /* not MSDOS */
-
-#ifdef VMS
- strcpy (tempfile, "tmp:emacsXXXXXX.");
+ if ('/' == DIRECTORY_SEP)
+ dostounix_filename (tempfile);
+ else
+ unixtodos_filename (tempfile);
+#ifdef WINDOWSNT
+ strcat (tempfile, "emXXXXXX");
#else
- strcpy (tempfile, "/tmp/emacsXXXXXX");
+ strcat (tempfile, "detmp.XXX");
#endif
-#endif /* not MSDOS */
+#else /* not DOS_NT */
+ char *tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1);
+ bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile,
+ STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1);
+#endif /* not DOS_NT */
+
+ coding_systems = Qt;
mktemp (tempfile);
filename_string = build_string (tempfile);
+ GCPRO1 (filename_string);
start = args[0];
end = args[1];
-#ifdef MSDOS
- specbind (Qbuffer_file_type, Vbinary_process_input);
- Fwrite_region (start, end, filename_string, Qnil, Qlambda);
- unbind_to (count, Qnil);
-#else
- Fwrite_region (start, end, filename_string, Qnil, Qlambda);
-#endif
+ /* Decide coding-system of the contents of the temporary file. */
+ if (!NILP (Vcoding_system_for_write))
+ val = Vcoding_system_for_write;
+ else if (NILP (current_buffer->enable_multibyte_characters))
+ val = Qnil;
+ else
+ {
+ args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2);
+ args2[0] = Qcall_process_region;
+ for (i = 0; i < nargs; i++) args2[i + 1] = args[i];
+ coding_systems = Ffind_operation_coding_system (nargs + 1, args2);
+ if (CONSP (coding_systems))
+ val = XCDR (coding_systems);
+ else if (CONSP (Vdefault_process_coding_system))
+ val = XCDR (Vdefault_process_coding_system);
+ else
+ val = Qnil;
+ }
+
+ {
+ int count1 = specpdl_ptr - specpdl;
+
+ specbind (intern ("coding-system-for-write"), val);
+ Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil);
+
+ unbind_to (count1, Qnil);
+ }
+
+ /* Note that Fcall_process takes care of binding
+ coding-system-for-read. */
record_unwind_protect (delete_temp_file, filename_string);
- if (!NILP (args[3]))
+ if (nargs > 3 && !NILP (args[3]))
Fdelete_region (start, end);
- args[3] = filename_string;
+ if (nargs > 3)
+ {
+ args += 2;
+ nargs -= 2;
+ }
+ else
+ {
+ args[0] = args[2];
+ nargs = 2;
+ }
+ args[1] = filename_string;
- return unbind_to (count, Fcall_process (nargs - 2, args + 2));
+ RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args)));
}
\f
#ifndef VMS /* VMS version is in vmsproc.c. */
+static int relocate_fd ();
+
/* This is the last thing run in a newly forked inferior
either synchronous or asynchronous.
Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2.
Therefore, the superior process must save and restore the value
of environ around the vfork and the call to this function.
- ENV is the environment for the subprocess.
-
SET_PGRP is nonzero if we should put the subprocess into a separate
process group.
a decent error from within the child, this should be verified as an
executable directory by the parent. */
+int
child_setup (in, out, err, new_argv, set_pgrp, current_dir)
int in, out, err;
register char **new_argv;
int set_pgrp;
Lisp_Object current_dir;
{
-#ifdef MSDOS
- /* The MSDOS port of gcc cannot fork, vfork, ... so we must call system
- instead. */
-#else /* not MSDOS */
char **env;
+ char *pwd_var;
+#ifdef WINDOWSNT
+ int cpid;
+ HANDLE handles[3];
+#endif /* WINDOWSNT */
int pid = getpid ();
-#ifdef PRIO_PROCESS
+#ifdef SET_EMACS_PRIORITY
{
extern int emacs_priority;
- nice (- emacs_priority);
+ if (emacs_priority < 0)
+ nice (- emacs_priority);
}
#endif
/* Close Emacs's descriptors that this process should not have. */
close_process_descs ();
#endif
+ /* DOS_NT isn't in a vfork, so if we are in the middle of load-file,
+ we will lose if we call close_load_descs here. */
+#ifndef DOS_NT
close_load_descs ();
+#endif
/* Note that use of alloca is always safe here. It's obvious for systems
that do not have true vfork or that have true (stack) alloca.
the superior's static variables as if the superior had done alloca
and will be cleaned up in the usual way. */
{
- register unsigned char *temp;
+ register char *temp;
register int i;
- i = XSTRING (current_dir)->size;
- temp = (unsigned char *) alloca (i + 2);
+ i = STRING_BYTES (XSTRING (current_dir));
+ pwd_var = (char *) alloca (i + 6);
+ temp = pwd_var + 4;
+ bcopy ("PWD=", pwd_var, 4);
bcopy (XSTRING (current_dir)->data, temp, i);
- if (temp[i - 1] != '/') temp[i++] = '/';
+ if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP;
temp[i] = 0;
+#ifndef DOS_NT
/* We can't signal an Elisp error here; we're in a vfork. Since
the callers check the current directory before forking, this
should only return an error if the directory's permissions
are changed between the check and this chdir, but we should
at least check. */
if (chdir (temp) < 0)
- exit (errno);
+ _exit (errno);
+#endif
+
+#ifdef DOS_NT
+ /* Get past the drive letter, so that d:/ is left alone. */
+ if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2]))
+ {
+ temp += 2;
+ i -= 2;
+ }
+#endif
+
+ /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */
+ while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1]))
+ temp[--i] = 0;
}
/* Set `env' to a vector of the strings in Vprocess_environment. */
new_length = 0;
for (tem = Vprocess_environment;
- (XTYPE (tem) == Lisp_Cons
- && XTYPE (XCONS (tem)->car) == Lisp_String);
- tem = XCONS (tem)->cdr)
+ CONSP (tem) && STRINGP (XCAR (tem));
+ tem = XCDR (tem))
new_length++;
- /* new_length + 1 to include terminating 0. */
- env = new_env = (char **) alloca ((new_length + 1) * sizeof (char *));
+ /* new_length + 2 to include PWD and terminating 0. */
+ env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *));
+
+ /* If we have a PWD envvar, pass one down,
+ but with corrected value. */
+ if (getenv ("PWD"))
+ *new_env++ = pwd_var;
/* Copy the Vprocess_environment strings into new_env. */
for (tem = Vprocess_environment;
- (XTYPE (tem) == Lisp_Cons
- && XTYPE (XCONS (tem)->car) == Lisp_String);
- tem = XCONS (tem)->cdr)
+ CONSP (tem) && STRINGP (XCAR (tem));
+ tem = XCDR (tem))
{
char **ep = env;
- char *string = (char *) XSTRING (XCONS (tem)->car)->data;
+ char *string = (char *) XSTRING (XCAR (tem))->data;
/* See if this string duplicates any string already in the env.
If so, don't put it in.
When an env var has multiple definitions,
}
*new_env = 0;
}
-
+#ifdef WINDOWSNT
+ prepare_standard_handles (in, out, err, handles);
+ set_process_dir (XSTRING (current_dir)->data);
+#else /* not WINDOWSNT */
/* Make sure that in, out, and err are not actually already in
descriptors zero, one, or two; this could happen if Emacs is
started with its standard in, out, or error closed, as might
happen under X. */
- in = relocate_fd (in, 3);
- if (out == err)
- err = out = relocate_fd (out, 3);
- else
- {
+ {
+ int oin = in, oout = out;
+
+ /* We have to avoid relocating the same descriptor twice! */
+
+ in = relocate_fd (in, 3);
+
+ if (out == oin)
+ out = in;
+ else
out = relocate_fd (out, 3);
+
+ if (err == oin)
+ err = in;
+ else if (err == oout)
+ err = out;
+ else
err = relocate_fd (err, 3);
- }
+ }
+#ifndef MSDOS
close (0);
close (1);
close (2);
close (in);
close (out);
close (err);
+#endif /* not MSDOS */
+#endif /* not WINDOWSNT */
-#ifdef USG
+#if defined(USG) && !defined(BSD_PGRPS)
#ifndef SETPGRP_RELEASES_CTTY
setpgrp (); /* No arguments but equivalent in this case */
#endif
something missing here;
#endif /* vipc */
+#ifdef MSDOS
+ pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env);
+ if (pid == -1)
+ /* An error occurred while trying to run the subprocess. */
+ report_file_error ("Spawning child process", Qnil);
+ return pid;
+#else /* not MSDOS */
+#ifdef WINDOWSNT
+ /* Spawn the child. (See ntproc.c:Spawnve). */
+ cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env);
+ reset_standard_handles (in, out, err, handles);
+ if (cpid == -1)
+ /* An error occurred while trying to spawn the process. */
+ report_file_error ("Spawning child process", Qnil);
+ return cpid;
+#else /* not WINDOWSNT */
/* execvp does not accept an environment arg so the only way
to pass this environment is to set environ. Our caller
is responsible for restoring the ambient value of environ. */
environ = env;
execvp (new_argv[0], new_argv);
- write (1, "Couldn't exec the program ", 26);
+ write (1, "Can't exec program: ", 20);
write (1, new_argv[0], strlen (new_argv[0]));
+ write (1, "\n", 1);
_exit (1);
+#endif /* not WINDOWSNT */
#endif /* not MSDOS */
}
-/* Move the file descriptor FD so that its number is not less than MIN.
+/* Move the file descriptor FD so that its number is not less than MINFD.
If the file descriptor is moved at all, the original is freed. */
-int
-relocate_fd (fd, min)
- int fd, min;
+static int
+relocate_fd (fd, minfd)
+ int fd, minfd;
{
- if (fd >= min)
+ if (fd >= minfd)
return fd;
else
{
}
/* Note that we hold the original FD open while we recurse,
to guarantee we'll get a new FD if we need it. */
- new = relocate_fd (new, min);
+ new = relocate_fd (new, minfd);
close (fd);
return new;
}
{
Lisp_Object scan;
- for (scan = Vprocess_environment; CONSP (scan); scan = XCONS (scan)->cdr)
+ for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan))
{
Lisp_Object entry;
- entry = XCONS (scan)->car;
- if (XTYPE (entry) == Lisp_String
- && XSTRING (entry)->size > varlen
+ entry = XCAR (scan);
+ if (STRINGP (entry)
+ && STRING_BYTES (XSTRING (entry)) > varlen
&& XSTRING (entry)->data[varlen] == '='
- && ! bcmp (XSTRING (entry)->data, var, varlen))
+#ifdef WINDOWSNT
+ /* NT environment variables are case insensitive. */
+ && ! strnicmp (XSTRING (entry)->data, var, varlen)
+#else /* not WINDOWSNT */
+ && ! bcmp (XSTRING (entry)->data, var, varlen)
+#endif /* not WINDOWSNT */
+ )
{
*value = (char *) XSTRING (entry)->data + (varlen + 1);
- *valuelen = XSTRING (entry)->size - (varlen + 1);
+ *valuelen = STRING_BYTES (XSTRING (entry)) - (varlen + 1);
return 1;
}
}
int valuelen;
CHECK_STRING (var, 0);
- if (getenv_internal (XSTRING (var)->data, XSTRING (var)->size,
+ if (getenv_internal (XSTRING (var)->data, STRING_BYTES (XSTRING (var)),
&value, &valuelen))
return make_string (value, valuelen);
else
\f
/* This is run before init_cmdargs. */
+void
init_callproc_1 ()
{
char *data_dir = egetenv ("EMACSDATA");
: PATH_DOC));
/* Check the EMACSPATH environment variable, defaulting to the
- PATH_EXEC path from paths.h. */
+ PATH_EXEC path from epaths.h. */
Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC);
Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path));
Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path);
}
-/* This is run after init_cmdargs, so that Vinvocation_directory is valid. */
+/* This is run after init_cmdargs, when Vinstallation_directory is valid. */
+void
init_callproc ()
{
char *data_dir = egetenv ("EMACSDATA");
register char * sh;
Lisp_Object tempdir;
-#ifndef MSDOS
- if (initialized && !NILP (Vinstallation_directory))
+ if (!NILP (Vinstallation_directory))
{
/* Add to the path the lib-src subdir of the installation dir. */
Lisp_Object tem;
tem = Fexpand_file_name (build_string ("lib-src"),
Vinstallation_directory);
+#ifndef DOS_NT
+ /* MSDOS uses wrapped binaries, so don't do this. */
if (NILP (Fmember (tem, Vexec_path)))
+ Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil));
+
+ Vexec_directory = Ffile_name_as_directory (tem);
+#endif /* not DOS_NT */
+
+ /* Maybe use ../etc as well as ../lib-src. */
+ if (data_dir == 0)
{
- Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil));
- Vexec_directory = Ffile_name_as_directory (tem);
+ tem = Fexpand_file_name (build_string ("etc"),
+ Vinstallation_directory);
+ Vdoc_directory = Ffile_name_as_directory (tem);
+ }
+ }
- /* If we use ../lib-src, maybe use ../etc as well.
- Do so if ../etc exists and has our DOC-... file in it. */
- if (data_dir == 0)
- {
- tem = Fexpand_file_name (build_string ("etc"),
- Vinstallation_directory);
- Vdoc_directory = Vdata_directory = Ffile_name_as_directory (tem);
- }
+ /* Look for the files that should be in etc. We don't use
+ Vinstallation_directory, because these files are never installed
+ near the executable, and they are never in the build
+ directory when that's different from the source directory.
+
+ Instead, if these files are not in the nominal place, we try the
+ source directory. */
+ if (data_dir == 0)
+ {
+ Lisp_Object tem, tem1, newdir;
+
+ tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory);
+ tem1 = Ffile_exists_p (tem);
+ if (NILP (tem1))
+ {
+ newdir = Fexpand_file_name (build_string ("../etc/"),
+ build_string (PATH_DUMPLOADSEARCH));
+ tem = Fexpand_file_name (build_string ("GNU"), newdir);
+ tem1 = Ffile_exists_p (tem);
+ if (!NILP (tem1))
+ Vdata_directory = newdir;
}
}
-#endif
- tempdir = Fdirectory_file_name (Vexec_directory);
- if (access (XSTRING (tempdir)->data, 0) < 0)
+#ifndef CANNOT_DUMP
+ if (initialized)
+#endif
{
- fprintf (stderr,
- "Warning: arch-dependent data dir (%s) does not exist.\n",
- XSTRING (Vexec_directory)->data);
- sleep (2);
+ tempdir = Fdirectory_file_name (Vexec_directory);
+ if (access (XSTRING (tempdir)->data, 0) < 0)
+ dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n",
+ Vexec_directory);
}
tempdir = Fdirectory_file_name (Vdata_directory);
if (access (XSTRING (tempdir)->data, 0) < 0)
- {
- fprintf (stderr,
- "Warning: arch-independent data dir (%s) does not exist.\n",
- XSTRING (Vdata_directory)->data);
- sleep (2);
- }
+ dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n",
+ Vdata_directory);
#ifdef VMS
Vshell_file_name = build_string ("*dcl*");
sh = (char *) getenv ("SHELL");
Vshell_file_name = build_string (sh ? sh : "/bin/sh");
#endif
+
+#ifdef VMS
+ Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX.");
+#else
+ if (getenv ("TMPDIR"))
+ {
+ char *dir = getenv ("TMPDIR");
+ Vtemp_file_name_pattern
+ = Fexpand_file_name (build_string ("emacsXXXXXX"),
+ build_string (dir));
+ }
+ else
+ Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX");
+#endif
}
+void
set_process_environment ()
{
register char **envp;
Vprocess_environment);
}
+void
syms_of_callproc ()
{
-#ifdef MSDOS
+#ifdef DOS_NT
Qbuffer_file_type = intern ("buffer-file-type");
staticpro (&Qbuffer_file_type);
-
- DEFVAR_LISP ("binary-process-input", &Vbinary_process_input,
- "*If non-nil then new subprocesses are assumed to take binary input.");
- Vbinary_process_input = Qnil;
-
- DEFVAR_LISP ("binary-process-output", &Vbinary_process_output,
- "*If non-nil then new subprocesses are assumed to produce binary output.");
- Vbinary_process_output = Qnil;
-#endif
+#endif /* DOS_NT */
DEFVAR_LISP ("shell-file-name", &Vshell_file_name,
"*File name to load inferior shells from.\n\
Each element is a string (directory name) or nil (try default directory).");
DEFVAR_LISP ("exec-directory", &Vexec_directory,
- "Directory of architecture-dependent files that come with GNU Emacs,\n\
-especially executable programs intended for Emacs to invoke.");
+ "Directory for executables for Emacs to invoke.\n\
+More generally, this includes any architecture-dependent files\n\
+that are built and installed from the Emacs distribution.");
DEFVAR_LISP ("data-directory", &Vdata_directory,
- "Directory of architecture-independent files that come with GNU Emacs,\n\
-intended for Emacs to use.");
+ "Directory of machine-independent files that come with GNU Emacs.\n\
+These are files intended for Emacs to use while it runs.");
DEFVAR_LISP ("doc-directory", &Vdoc_directory,
"Directory containing the DOC file that comes with GNU Emacs.\n\
includes this.");
Vconfigure_info_directory = build_string (PATH_INFO);
+ DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern,
+ "Pattern for making names for temporary files.\n\
+This is used by `call-process-region'.");
+ /* This variable is initialized in init_callproc. */
+
DEFVAR_LISP ("process-environment", &Vprocess_environment,
"List of environment variables for subprocesses to inherit.\n\
Each element should be a string of the form ENVVARNAME=VALUE.\n\
HCoop / bpt / emacs.git / blobdiff