/* Synchronous subprocess invocation for GNU Emacs.
- Copyright (C) 1985,86,87,88,93,94,95,99, 2000, 2001
- Free Software Foundation, Inc.
+ Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001,
+ 2002, 2003, 2004, 2005, 2006 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, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
#include <config.h>
#endif
#include <sys/file.h>
-#ifdef USG5
+#ifdef HAVE_FCNTL_H
#define INCLUDED_FCNTL
#include <fcntl.h>
#endif
#include "process.h"
#include "syssignal.h"
#include "systty.h"
+#include "blockinput.h"
#ifdef MSDOS
#include "msdos.h"
/* Nonzero => this is a string explaining death of synchronous subprocess. */
char *synch_process_death;
+/* Nonzero => this is the signal number that terminated the subprocess. */
+int synch_process_termsig;
+
/* If synch_process_death is zero,
this is exit code of synchronous subprocess. */
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.
int nargs;
register Lisp_Object *args;
{
- Lisp_Object infile, buffer, current_dir, display, path;
+ Lisp_Object infile, buffer, current_dir, path;
+ int display_p;
int fd[2];
int filefd;
register int pid;
- char buf[16384];
- char *bufptr = buf;
- int bufsize = 16384;
+#define CALLPROC_BUFFER_SIZE_MIN (16 * 1024)
+#define CALLPROC_BUFFER_SIZE_MAX (4 * CALLPROC_BUFFER_SIZE_MIN)
+ char buf[CALLPROC_BUFFER_SIZE_MAX];
+ int bufsize = CALLPROC_BUFFER_SIZE_MIN;
int count = SPECPDL_INDEX ();
register const unsigned char **new_argv
#ifndef subprocesses
/* Without asynchronous processes we cannot have BUFFER == 0. */
- if (nargs >= 3
+ if (nargs >= 3
&& (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2])))
error ("Operating system cannot handle asynchronous subprocesses");
#endif /* subprocesses */
CHECK_BUFFER (buffer);
}
}
- else
+ else
buffer = Qnil;
/* Make sure that the child will be able to chdir to the current
protected by the caller, so all we really have to worry about is
buffer. */
{
- struct gcpro gcpro1, gcpro2, gcpro3;
+ struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
current_dir = current_buffer->directory;
- GCPRO3 (infile, buffer, current_dir);
+ GCPRO4 (infile, buffer, current_dir, error_file);
current_dir
= expand_and_dir_to_file (Funhandled_file_name_directory (current_dir),
report_file_error ("Setting current directory",
Fcons (current_buffer->directory, Qnil));
+ if (STRING_MULTIBYTE (infile))
+ infile = ENCODE_FILE (infile);
+ if (STRING_MULTIBYTE (current_dir))
+ current_dir = ENCODE_FILE (current_dir);
+ if (STRINGP (error_file) && STRING_MULTIBYTE (error_file))
+ error_file = ENCODE_FILE (error_file);
UNGCPRO;
}
- display = nargs >= 4 ? args[3] : Qnil;
+ display_p = INTERACTIVE && nargs >= 4 && !NILP (args[3]);
filefd = emacs_open (SDATA (infile), O_RDONLY, 0);
if (filefd < 0)
{
+ infile = DECODE_FILE (infile);
report_file_error ("Opening process input file", Fcons (infile, Qnil));
}
/* Search for program; barf if not found. */
*tempfile = '\0';
}
dostounix_filename (tempfile);
- if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/')
+ if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/')
strcat (tempfile, "/");
strcat (tempfile, "detmp.XXX");
mktemp (tempfile);
to avoid timing error if process terminates soon. */
synch_process_death = 0;
synch_process_retcode = 0;
+ synch_process_termsig = 0;
if (NILP (error_file))
fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0);
#ifdef MSDOS
unlink (tempfile);
#endif
- report_file_error ("Cannot redirect stderr",
- Fcons ((NILP (error_file)
- ? build_string (NULL_DEVICE) : error_file),
- Qnil));
+ if (NILP (error_file))
+ error_file = build_string (NULL_DEVICE);
+ else if (STRINGP (error_file))
+ error_file = DECODE_FILE (error_file);
+ report_file_error ("Cannot redirect stderr", Fcons (error_file, Qnil));
}
- current_dir = ENCODE_FILE (current_dir);
-
#ifdef MAC_OS8
{
/* Call run_mac_command in sysdep.c here directly instead of doing
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)
pid = child_setup (filefd, fd1, fd_error, (char **) new_argv,
0, current_dir);
#else /* not WINDOWSNT */
+ BLOCK_INPUT;
+
pid = vfork ();
if (pid == 0)
child_setup (filefd, fd1, fd_error, (char **) new_argv,
0, current_dir);
}
+
+ UNBLOCK_INPUT;
#endif /* not WINDOWSNT */
/* The MSDOS case did this already. */
int first = 1;
int total_read = 0;
int carryover = 0;
- int display_on_the_fly = !NILP (display) && INTERACTIVE;
+ int display_on_the_fly = display_p;
struct coding_system saved_coding;
int pt_orig = PT, pt_byte_orig = PT_BYTE;
int inserted;
nread = carryover;
while (nread < bufsize - 1024)
{
- int this_read = emacs_read (fd[0], bufptr + nread,
+ int this_read = emacs_read (fd[0], buf + nread,
bufsize - nread);
if (this_read < 0)
/* Now NREAD is the total amount of data in the buffer. */
immediate_quit = 0;
-
+
if (!NILP (buffer))
{
if (! CODING_MAY_REQUIRE_DECODING (&process_coding))
- insert_1_both (bufptr, nread, nread, 0, 1, 0);
+ insert_1_both (buf, nread, nread, 0, 1, 0);
else
{ /* We have to decode the input. */
int size;
repeat_decoding:
size = decoding_buffer_size (&process_coding, nread);
decoding_buf = (char *) xmalloc (size);
-
+
/* We can't use the macro CODING_REQUIRE_DETECTION
because it always returns nonzero if the coding
system requires EOL detection. Here, we have to
requires text-encoding detection. */
if (process_coding.type == coding_type_undecided)
{
- detect_coding (&process_coding, bufptr, nread);
+ detect_coding (&process_coding, buf, nread);
if (process_coding.composing != COMPOSITION_DISABLED)
+ /* We have not yet allocated the composition
+ data because the coding type was undecided. */
coding_allocate_composition_data (&process_coding, PT);
}
if (process_coding.cmp_data)
process_coding.cmp_data->char_offset = PT;
-
- decode_coding (&process_coding, bufptr, decoding_buf,
+
+ decode_coding (&process_coding, buf, 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. */
+ done by insufficient data. So, we try the code
+ detection again with more data. */
xfree (decoding_buf);
display_on_the_fly = 0;
process_coding = saved_coding;
carryover = nread;
+ /* This is to make the above condition always
+ fails in the future. */
+ saved_coding.type = coding_type_no_conversion;
continue;
}
-
+
if (process_coding.produced > 0)
insert_1_both (decoding_buf, process_coding.produced_char,
process_coding.produced, 0, 1, 0);
/* CRs have been replaced with LFs. Undo
that in the text inserted above. */
unsigned char *p;
-
+
move_gap_both (PT, PT_BYTE);
-
+
p = BYTE_POS_ADDR (pt_byte_orig);
for (; p < GPT_ADDR; ++p)
if (*p == '\n')
old_pt = PT;
old_pt_byte = PT_BYTE;
nCR = 0;
-
+
for (bytepos = PT_BYTE - 1;
bytepos >= pt_byte_orig;
--bytepos)
coding = AREF (eol_type, CODING_EOL_LF);
else
coding = saved_coding.symbol;
-
+
process_coding.symbol = coding;
process_coding.eol_type = CODING_EOL_LF;
process_coding.mode
&= ~CODING_MODE_INHIBIT_INCONSISTENT_EOL;
}
-
+
nread -= process_coding.consumed;
carryover = nread;
if (carryover > 0)
/* As CARRYOVER should not be that large, we had
better avoid overhead of bcopy. */
- BCOPY_SHORT (bufptr + process_coding.consumed, bufptr,
+ BCOPY_SHORT (buf + process_coding.consumed, buf,
carryover);
if (process_coding.result == CODING_FINISH_INSUFFICIENT_CMP)
{
if (process_coding.mode & CODING_MODE_LAST_BLOCK)
break;
+#if (CALLPROC_BUFFER_SIZE_MIN != CALLPROC_BUFFER_SIZE_MAX)
/* Make the buffer bigger as we continue to read more data,
- but not past 64k. */
- if (bufsize < 64 * 1024 && total_read > 32 * bufsize)
- {
- char *tempptr;
- bufsize *= 2;
-
- tempptr = (char *) alloca (bufsize);
- bcopy (bufptr, tempptr, bufsize / 2);
- bufptr = tempptr;
- }
+ but not past CALLPROC_BUFFER_SIZE_MAX. */
+ if (bufsize < CALLPROC_BUFFER_SIZE_MAX && total_read > 32 * bufsize)
+ if ((bufsize *= 2) > CALLPROC_BUFFER_SIZE_MAX)
+ bufsize = CALLPROC_BUFFER_SIZE_MAX;
+#endif
- if (!NILP (display) && INTERACTIVE)
+ if (display_p)
{
if (first)
prepare_menu_bars ();
first = 0;
redisplay_preserve_echo_area (1);
+ /* This variable might have been set to 0 for code
+ detection. In that case, we set it back to 1 because
+ we should have already detected a coding system. */
+ display_on_the_fly = 1;
}
immediate_quit = 1;
QUIT;
unbind_to (count, Qnil);
+ if (synch_process_termsig)
+ {
+ char *signame;
+
+ synchronize_system_messages_locale ();
+ signame = strsignal (synch_process_termsig);
+
+ if (signame == 0)
+ signame = "unknown";
+
+ synch_process_death = signame;
+ }
+
if (synch_process_death)
return code_convert_string_norecord (build_string (synch_process_death),
Vlocale_coding_system, 0);
delete_temp_file (name)
Lisp_Object name;
{
- /* 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. */
+ /* Suppress jka-compr handling, etc. */
+ int count = SPECPDL_INDEX ();
+ specbind (intern ("file-name-handler-alist"), Qnil);
internal_delete_file (name);
+ unbind_to (count, Qnil);
return Qnil;
}
Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.
Remaining args are passed to PROGRAM at startup as command args.
-If BUFFER is nil, `call-process-region' returns immediately with value nil.
+If BUFFER is 0, `call-process-region' returns immediately with value nil.
Otherwise it waits for PROGRAM to terminate
and returns a numeric exit status or a signal description string.
If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.
int count1 = SPECPDL_INDEX ();
specbind (intern ("coding-system-for-write"), val);
+ /* POSIX lets mk[s]temp use "."; don't invoke jka-compr if we
+ happen to get a ".Z" suffix. */
+ specbind (intern ("file-name-handler-alist"), Qnil);
Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil);
unbind_to (count1, Qnil);
}
- /* Note that Fcall_process takes care of binding
+ /* Note that Fcall_process takes care of binding
coding-system-for-read. */
record_unwind_protect (delete_temp_file, filename_string);
of environ around the vfork and the call to this function.
SET_PGRP is nonzero if we should put the subprocess into a separate
- process group.
+ process group.
CURRENT_DIR is an elisp string giving the path of the current
directory the subprocess should have. Since we can't really signal
#endif /* not VMS */
\f
/* This is run before init_cmdargs. */
-
+
void
init_callproc_1 ()
{
char *doc_dir = egetenv ("EMACSDOC");
Vdata_directory
- = Ffile_name_as_directory (build_string (data_dir ? data_dir
+ = Ffile_name_as_directory (build_string (data_dir ? data_dir
: PATH_DATA));
Vdoc_directory
= Ffile_name_as_directory (build_string (doc_dir ? doc_dir
init_callproc ()
{
char *data_dir = egetenv ("EMACSDATA");
-
+
register char * sh;
Lisp_Object tempdir;
Vexec_path = Fcons (tem, Vexec_path);
Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path);
}
-
+
Vexec_directory = Ffile_name_as_directory (tem);
#endif /* not DOS_NT */
If multiple entries define the same variable, the first one always
takes precedence.
The environment which Emacs inherits is placed in this variable
-when Emacs starts. */);
+when Emacs starts.
+Non-ASCII characters are encoded according to the initial value of
+`locale-coding-system', i.e. the elements must normally be decoded for use.
+See `setenv' and `getenv'. */);
#ifndef VMS
defsubr (&Scall_process);
#endif
defsubr (&Scall_process_region);
}
+
+/* arch-tag: 769b8045-1df7-4d2b-8968-e3fb49017f95
+ (do not change this comment) */