home *** CD-ROM | disk | FTP | other *** search
- ;;; mule-process.el --- Process functions for XEmacs/mule.
-
- ;; Copyright (C) 1985-1987, 1993, 1994, 1997 Free Software Foundation, Inc.
- ;; Copyright (C) 1995 Ben Wing
- ;; Copyright (C) 1997 MORIOKA Tomohiko
-
- ;; Author: Ben Wing
- ;; MORIOKA Tomohiko
- ;; Maintainer: XEmacs Development Team
- ;; Keywords: mule, multilingual, coding system, process
-
- ;; This file is part of XEmacs.
-
- ;; XEmacs 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.
-
- ;; XEmacs 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 XEmacs; see the file COPYING. If not, write to the Free
- ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- ;; 02111-1307, USA.
-
- ;;; Code:
-
- (defvar process-coding-system-alist nil
- "Alist to decide a coding system to use for a process I/O operation.
- The format is ((PATTERN . VAL) ...),
- where PATTERN is a regular expression matching a program name,
- VAL is a coding system, a cons of coding systems, or a function symbol.
- If VAL is a coding system, it is used for both decoding what received
- from the program and encoding what sent to the program.
- If VAL is a cons of coding systems, the car part is used for decoding,
- and the cdr part is used for encoding.
- If VAL is a function symbol, the function must return a coding system
- or a cons of coding systems which are used as above.")
-
- (defun call-process (program &optional infile buffer displayp &rest args)
- "Call PROGRAM synchronously in separate process.
- The program's input comes from file INFILE (nil means `/dev/null').
- Insert output in BUFFER before point; t means current buffer;
- nil for BUFFER means discard it; 0 means discard and don't wait.
- BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,
- REAL-BUFFER says what to do with standard output, as above,
- while STDERR-FILE says what to do with standard error in the child.
- STDERR-FILE may be nil (discard standard error output),
- t (mix it with ordinary output), or a file name string.
-
- Fourth arg DISPLAYP non-nil means redisplay buffer as output is inserted.
- Remaining arguments are strings passed as command arguments to PROGRAM.
-
- If BUFFER is 0, `call-process' 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."
- (let* ((coding-system-for-read
- (or coding-system-for-read
- (let (ret)
- (catch 'found
- (let ((alist process-coding-system-alist)
- (case-fold-search (eq system-type 'vax-vms)))
- (while alist
- (if (string-match (car (car alist)) program)
- (throw 'found (setq ret (cdr (car alist))))
- )
- (setq alist (cdr alist))
- )))
- (if (functionp ret)
- (setq ret (funcall ret 'call-process program))
- )
- (cond ((consp ret) (car ret))
- ((find-coding-system ret) ret)
- )
- ))))
- (apply 'call-process-internal program infile buffer displayp args)
- ))
-
- (defun call-process-region (start end program
- &optional deletep buffer displayp
- &rest args)
- "Send text from START to END to a synchronous process running PROGRAM.
- Delete the text if fourth arg DELETEP is non-nil.
-
- Insert output in BUFFER before point; t means current buffer;
- nil for BUFFER means discard it; 0 means discard and don't wait.
- BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,
- REAL-BUFFER says what to do with standard output, as above,
- while STDERR-FILE says what to do with standard error in the child.
- STDERR-FILE may be nil (discard standard error output),
- t (mix it with ordinary output), or a file name string.
-
- Sixth arg DISPLAYP non-nil means redisplay buffer as output is inserted.
- Remaining args are passed to PROGRAM at startup as command args.
-
- If BUFFER is 0, returns immediately with value nil.
- Otherwise waits for PROGRAM to terminate
- and returns a numeric exit status or a signal description string.
- If you quit, the process is first killed with SIGINT, then with SIGKILL if
- you quit again before the process exits."
- (let ((temp (cond ((eq system-type 'vax-vms)
- (make-temp-name "tmp:emacs"))
- ((or (eq system-type 'ms-dos)
- (eq system-type 'windows-nt))
- (make-temp-name
- (concat (file-name-as-directory
- (or (getenv "TMP")
- (getenv "TEMP")
- ""))
- "em")))
- (t
- (make-temp-name "/tmp/emacs")))))
- (unwind-protect
- (let (cs-r cs-w)
- (let (ret)
- (catch 'found
- (let ((alist process-coding-system-alist)
- (case-fold-search (eq system-type 'vax-vms)))
- (while alist
- (if (string-match (car (car alist)) program)
- (throw 'found (setq ret (cdr (car alist)))))
- (setq alist (cdr alist))
- )))
- (if (functionp ret)
- (setq ret (funcall ret 'call-process-region program)))
- (cond ((consp ret)
- (setq cs-r (car ret)
- cs-w (cdr ret)))
- ((find-coding-system ret)
- (setq cs-r ret
- cs-w ret))))
- (let ((coding-system-for-read
- (or coding-system-for-read cs-r))
- (coding-system-for-write
- (or coding-system-for-write cs-w)))
- (if (or (eq system-type 'ms-dos)
- (eq system-type 'windows-nt))
- (let ((buffer-file-type binary-process-output))
- (write-region start end temp nil 'silent))
- (write-region start end temp nil 'silent))
- (if deletep (delete-region start end))
- (apply #'call-process program temp buffer displayp args)))
- (condition-case ()
- (delete-file temp)
- (file-error nil)))))
-
- (defun start-process (name buffer program &rest program-args)
- "Start a program in a subprocess. Return the process object for it.
- Args are NAME BUFFER PROGRAM &rest PROGRAM-ARGS
- NAME is name for process. It is modified if necessary to make it unique.
- BUFFER is the buffer or (buffer-name) to associate with the process.
- Process output goes at end of that buffer, unless you specify
- an output stream or filter function to handle the output.
- BUFFER may be also nil, meaning that this process is not associated
- with any buffer
- Third arg is program file name. It is searched for as in the shell.
- Remaining arguments are strings to give program as arguments.
- INCODE and OUTCODE specify the coding-system objects used in input/output
- from/to the process."
- (let (cs-r cs-w)
- (let (ret)
- (catch 'found
- (let ((alist process-coding-system-alist)
- (case-fold-search (eq system-type 'vax-vms)))
- (while alist
- (if (string-match (car (car alist)) program)
- (throw 'found (setq ret (cdr (car alist)))))
- (setq alist (cdr alist))
- )))
- (if (functionp ret)
- (setq ret (funcall ret 'start-process program)))
- (cond ((consp ret)
- (setq cs-r (car ret)
- cs-w (cdr ret)))
- ((find-coding-system ret)
- (setq cs-r ret
- cs-w ret))))
- (let ((coding-system-for-read
- (or coding-system-for-read cs-r))
- (coding-system-for-write
- (or coding-system-for-write cs-w)))
- (apply 'start-process-internal name buffer program program-args)
- )))
-
- (defvar network-coding-system-alist nil
- "Alist to decide a coding system to use for a network I/O operation.
- The format is ((PATTERN . VAL) ...),
- where PATTERN is a regular expression matching a network service name
- or is a port number to connect to,
- VAL is a coding system, a cons of coding systems, or a function symbol.
- If VAL is a coding system, it is used for both decoding what received
- from the network stream and encoding what sent to the network stream.
- If VAL is a cons of coding systems, the car part is used for decoding,
- and the cdr part is used for encoding.
- If VAL is a function symbol, the function must return a coding system
- or a cons of coding systems which are used as above.
-
- See also the function `find-operation-coding-system'.")
-
- (defun open-network-stream (name buffer host service)
- "Open a TCP connection for a service to a host.
- Returns a subprocess-object to represent the connection.
- Input and output work as for subprocesses; `delete-process' closes it.
- Args are NAME BUFFER HOST SERVICE.
- NAME is name for process. It is modified if necessary to make it unique.
- BUFFER is the buffer (or buffer-name) to associate with the process.
- Process output goes at end of that buffer, unless you specify
- an output stream or filter function to handle the output.
- BUFFER may be also nil, meaning that this process is not associated
- with any buffer
- Third arg is name of the host to connect to, or its IP address.
- Fourth arg SERVICE is name of the service desired, or an integer
- specifying a port number to connect to."
- (let (cs-r cs-w)
- (let (ret)
- (catch 'found
- (let ((alist network-coding-system-alist)
- (case-fold-search (eq system-type 'vax-vms))
- pattern)
- (while alist
- (setq pattern (car (car alist)))
- (and
- (cond ((numberp pattern)
- (and (numberp service)
- (eq pattern service)))
- ((stringp pattern)
- (or (and (stringp service)
- (string-match pattern service))
- (and (numberp service)
- (string-match pattern
- (number-to-string service))))))
- (throw 'found (setq ret (cdr (car alist)))))
- (setq alist (cdr alist))
- )))
- (if (functionp ret)
- (setq ret (funcall ret 'open-network-stream service)))
- (cond ((consp ret)
- (setq cs-r (car ret)
- cs-w (cdr ret)))
- ((find-coding-system ret)
- (setq cs-r ret
- cs-w ret))))
- (let ((coding-system-for-read
- (or coding-system-for-read cs-r))
- (coding-system-for-write
- (or coding-system-for-write cs-w)))
- (open-network-stream-internal name buffer host service))))
-
- ;;; mule-process.el ends here
-