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+;;; "batch.scm" Group and execute commands on various systems.
+;Copyright (C) 1994, 1995 Aubrey Jaffer
+;
+;Permission to copy this software, to redistribute it, and to use it
+;for any purpose is granted, subject to the following restrictions and
+;understandings.
+;
+;1.  Any copy made of this software must include this copyright notice
+;in full.
+;
+;2.  I have made no warrantee or representation that the operation of
+;this software will be error-free, and I am under no obligation to
+;provide any services, by way of maintenance, update, or otherwise.
+;
+;3.  In conjunction with products arising from the use of this
+;material, there shall be no use of my name in any advertising,
+;promotional, or sales literature without prior written consent in
+;each case.
+
+(require 'line-i/o)			;Just for write-line
+(require 'parameters)
+(require 'database-utilities)
+
+;;(define (batch parms op . args) ??)
+
+(define (batch:port parms)
+  (car (parameter-list-ref parms 'batch-port)))
+
+(define (batch:dialect parms)		; was batch-family
+  (car (parameter-list-ref parms 'batch-dialect)))
+
+(define (batch:line-length-limit parms)
+  (let ((bl (parameter-list-ref parms 'batch-line-length-limit)))
+    (cond (bl (car bl))
+	  (else (case (batch:dialect parms)
+		  ((unix) 1023)
+		  ((dos) 127)
+		  ((vms) 1023)
+		  ((system) 1023)
+		  ((*unknown*) -1))))))
+
+(define (batch-line parms str)
+  (let ((bp (parameter-list-ref parms 'batch-port))
+	(ln (batch:line-length-limit parms)))
+    (cond ((not bp) (slib:error 'batch-line "missing batch-port parameter"
+				parms))
+	  ((>= (string-length str) ln) #f)
+	  (else (write-line str (car bp)) #t))))
+
+;;; add a Scheme batch-dialect?
+
+(define (batch:apply-chop-to-fit proc . args)
+  (define args-but-last (butlast args 1))
+  (let loop ((fodder (car (last-pair args))))
+    (let ((hlen (quotient (length fodder) 2)))
+      (cond ((apply proc (append args-but-last (list fodder))))
+	    ((not (positive? hlen))
+	     (slib:error 'batch:apply-chop-to-fit "can't split"
+			 (cons proc (append args-but-last (list fodder)))))
+	    (else (loop (nthcdr (+ 1 hlen) fodder))
+		  (loop (butlast fodder hlen)))))))
+
+(define (batch:system parms . strings)
+  (or (apply batch:try-system parms strings)
+      (slib:error 'batch:system 'failed strings)))
+
+(define (batch:try-system parms . strings)
+  (define port (batch:port parms))
+  (set! strings (batch:flatten strings))
+  (case (batch:dialect parms)
+    ((unix) (batch-line parms (apply string-join " " strings)))
+    ((dos) (batch-line parms (apply string-join " " strings)))
+    ((vms) (batch-line parms (apply string-join " " "$" strings)))
+    ((system) (write `(system ,(apply string-join " " strings)) port)
+	      (newline port)
+	      (zero? (system (apply string-join " " strings))))
+    ((*unknown*) (write `(system ,(apply string-join " " strings)) port)
+		 (newline port)
+		 #f)))
+
+(define (batch:run-script parms . strings)
+  (case (batch:dialect parms strings)
+    ((unix) (batch:system parms strings name))
+    ((dos) (batch:system parms strings name))
+    ((vms) (batch:system parms (cons #\@ strings)))
+    ((system) (batch:system parms strings name))
+    ((*unknown*) (batch:system parms strings name)
+		 #f)))
+
+(define (batch:comment parms . lines)
+  (define port (batch:port parms))
+  (set! lines (batch:flatten lines))
+  (case (batch:dialect parms)
+    ((unix) (every (lambda (line)
+		     (batch-line parms (string-append "# " line)))
+		   lines))
+    ((dos) (every (lambda (line)
+		    (batch-line parms
+				(string-append
+				 "rem" (if (equal? "  " line) ".") line)))
+		  lines))
+    ((vms) (every (lambda (line)
+		    (batch-line parms (string-append "$! " line)))
+		  lines))
+    ((system) (every (lambda (line)
+		       (batch-line parms (string-append "; " line)))
+		     lines))
+    ((*unknown*) (for-each (lambda (line)
+			     (batch-line parms (string-append ";;; " line))
+			     (newline port))
+			   lines)
+		 #f)))
+
+(define (batch:lines->file parms file . lines)
+  (define port (batch:port parms))
+  (set! lines (batch:flatten lines))
+  (case (or (batch:dialect parms) '*unknown*)
+    ((unix) (batch-line parms (string-append "rm -f " file))
+	    (every
+	     (lambda (string)
+	       (batch-line parms (string-append "echo '" string "'>>" file)))
+	     lines))
+    ((dos) (batch-line parms (string-append "DEL " file))
+	   (every
+	    (lambda (string)
+	      (batch-line parms
+			  (string-append "ECHO" (if (equal? "" string) "." " ")
+					 string ">>" file)))
+	    lines))
+    ((vms) (and (batch-line parms (string-append "$DELETE " file))
+		(batch-line parms (string-append "$CREATE " file))
+		(batch-line parms (string-append "$DECK"))
+		(every (lambda (string) (batch-line parms string))
+		       lines)
+		(batch-line parms (string-append "$EOD"))))
+    ((system) (write `(delete-file ,file) port) (newline port)
+	      (delete-file file)
+	      (pretty-print `(call-with-output-file ,file
+			       (lambda (fp)
+				 (for-each
+				  (lambda (string) (write-line string fp))
+				  ',lines)))
+			    port)
+	      (call-with-output-file file
+		(lambda (fp) (for-each (lambda (string) (write-line string fp))
+				       lines)))
+	      #t)
+    ((*unknown*)
+     (write `(delete-file ,file) port) (newline port)
+     (pretty-print
+      `(call-with-output-file ,file
+	 (lambda (fp)
+	   (for-each
+	    (lambda (string)
+	      (write-line string fp))
+	    ,lines)))
+      port)
+     #f)))
+
+(define (batch:delete-file parms file)
+  (define port (batch:port parms))
+  (case (batch:dialect parms)
+    ((unix) (batch-line parms (string-append "rm -f " file))
+	    #t)
+    ((dos) (batch-line parms (string-append "DEL " file))
+	   #t)
+    ((vms) (batch-line parms (string-append "$DELETE " file))
+	   #t)
+    ((system) (write `(delete-file ,file) port) (newline port)
+	      (delete-file file))	; SLIB provides
+    ((*unknown*) (write `(delete-file ,file) port) (newline port)
+		 #f)))
+
+(define (batch:rename-file parms old-name new-name)
+  (define port (batch:port parms))
+  (case (batch:dialect parms)
+    ((unix) (batch-line parms (string-join " " "mv -f" old-name new-name)))
+    ((dos) (batch-line parms (string-join " " "MOVE" "/Y" old-name new-name)))
+    ((vms) (batch-line parms (string-join " " "$RENAME" old-name new-name)))
+    ((system) (batch:extender 'rename-file batch:rename-file))
+    ((*unknown*) (write `(rename-file ,old-name ,new-name) port)
+		 (newline port)
+		 #f)))
+
+(define (batch:call-with-output-script parms name proc)
+  (case (batch:dialect parms)
+    ((unix) ((cond ((string? name)
+		    (lambda (proc)
+		      (let ((ans (call-with-output-file name proc)))
+			(system (string-append "chmod +x " name))
+			ans)))
+		   ((output-port? name) (lambda (proc) (proc name)))
+		   (else  (lambda (proc) (proc (current-output-port)))))
+	     (lambda (port)
+	       (write-line "#!/bin/sh" port)
+	       (cond
+		((and (string? name) (provided? 'bignum))
+		 (require 'posix-time)
+		 (write-line
+		  (string-append
+		   "# \""  name "\" build script created "
+		   (ctime (current-time)))
+		  port)))
+	       (proc port))))
+
+    ((dos) ((cond ((string? name)
+		   (lambda (proc)
+		     (call-with-output-file (string-append name ".bat") proc)))
+		  ((output-port? name) (lambda (proc) (proc name)))
+		  (else  (lambda (proc) (proc (current-output-port)))))
+	    (lambda (port)
+	      (cond
+	       ((and (string? name) (provided? 'bignum))
+		(require 'posix-time)
+		(write-line
+		 (string-append
+		  "rem " name
+		  " build script created "
+		  (ctime (current-time)))
+		 port)))
+	      (proc port))))
+
+    ((vms) ((cond ((string? name)
+		   (lambda (proc)
+		     (call-with-output-file (string-append name ".COM") proc)))
+		  ((output-port? name) (lambda (proc) (proc name)))
+		  (else  (lambda (proc) (proc (current-output-port)))))
+	    (lambda (port)
+	      (cond
+	       ((and (string? name) (provided? 'bignum))
+		(require 'posix-time)
+		;;(write-line
+		;; "$DEFINE/USER SYS$OUTPUT BUILD.LOG" port)
+		(write-line
+		 (string-append
+		  "$! " name
+		  " build script created "
+		  (ctime (current-time)))
+		 port)))
+	      (proc port))))
+
+    ((system) ((cond ((string? name)
+		      (lambda (proc)
+			(let ((ans (call-with-output-file name
+				     (lambda (port) (proc name)))))
+			  (system (string-append "chmod +x " name))
+			  ans)))
+		     ((output-port? name) (lambda (proc) (proc name)))
+		     (else  (lambda (proc) (proc (current-output-port)))))
+	       (lambda (port)
+		 (cond
+		  ((and (string? name) (provided? 'bignum))
+		   (require 'posix-time)
+		   (write-line
+		    (string-append
+		     ";;; \""  name
+		     "\" build script created " (ctime (current-time)))
+		    port)))
+		 (proc port))))
+
+    ((*unknown*) ((cond ((string? name)
+			 (lambda (proc)
+			   (let ((ans (call-with-output-file name
+					(lambda (port) (proc name)))))
+			     (system (string-append "chmod +x " name))
+			     ans)))
+			((output-port? name) (lambda (proc) (proc name)))
+			(else  (lambda (proc) (proc (current-output-port)))))
+		  (lambda (port)
+		    (cond
+		     ((and (string? name) (provided? 'bignum))
+		      (require 'posix-time)
+		      (write-line
+		       (string-append
+			";;; \""  name
+			"\" build script created " (ctime (current-time)))
+		       port)))
+		    (proc port)))
+		 #f)))
+
+;;; This little ditty figures out how to use a Scheme extension or
+;;; SYSTEM to execute a command that is not available in the batch
+;;; mode chosen.
+
+(define (batch:extender NAME BATCHER)
+  (lambda (parms . args)
+    (define port (batch:port parms))
+    (cond
+     ((provided? 'i/o-extensions)	; SCM specific
+      (write `(,NAME ,@args) port)
+      (newline port)
+      (apply (slib:eval NAME) args))
+     (else
+      (let ((pl (make-parameter-list (map car parms))))
+	(adjoin-parameters!
+	 pl (cons 'batch-dialect (os->batch-dialect
+				  (parameter-list-ref parms 'platform))))
+	(system
+	 (call-with-output-string
+	  (lambda (port)
+	    (batch:call-with-output-script
+	     port
+	     (lambda (batch-port)
+	       (define new-parms (copy-tree pl))
+	       (adjoin-parameters! new-parms (list 'batch-port batch-port))
+	       (apply BATCHER new-parms args)))))))))))
+
+(define (replace-suffix str old new)
+  (define (cs str)
+    (let* ((len (string-length str))
+	   (re (- len (string-length old))))
+      (cond ((string-ci=? old (substring str re len))
+	     (string-append (substring str 0 re) new))
+	    (else
+	     (slib:error 'replace-suffix "suffix doens't match:"
+			 old str)))))
+  (if (string? str) (cs str) (map cs str)))
+
+(define (must-be-first firsts lst)
+  (append (remove-if-not (lambda (i) (member i lst)) firsts)
+	  (remove-if (lambda (i) (member i firsts)) lst)))
+
+(define (must-be-last lst lasts)
+  (append (remove-if (lambda (i) (member i lasts)) lst)
+	  (remove-if-not (lambda (i) (member i lst)) lasts)))
+
+(define (string-join joiner . args)
+  (if (null? args) ""
+      (apply string-append
+	     (car args)
+	     (map (lambda (s) (string-append joiner s)) (cdr args)))))
+
+(define (batch:flatten strings)
+  (apply
+   append (map
+	   (lambda (obj)
+	     (cond ((eq? "" obj) '())
+		   ((string? obj) (list obj))
+		   ((eq? #f obj) '())
+		   ((null? obj) '())
+		   ((list? obj) (batch:flatten obj))
+		   (else (slib:error 'batch:flatten "unexpected type"
+				     obj "in" strings))))
+	   strings)))
+
+(define batch:platform (software-type))
+(cond ((and (eq? 'unix batch:platform) (provided? 'system))
+       (let ((file-name (tmpnam)))
+	 (system (string-append "uname > " file-name))
+	 (set! batch:platform (call-with-input-file file-name read))
+	 (delete-file file-name))))
+
+(define batch:database #f)
+(define (os->batch-dialect os)
+  ((((batch:database 'open-table) 'operating-system #f)
+    'get 'os-family) os))
+
+(define (batch:initialize! database)
+  (set! batch:database database)
+  (define-tables database
+
+    '(batch-dialect
+      ((family atom))
+      ()
+      ((unix)
+       (dos)
+       (vms)
+       (system)
+       (*unknown*)))
+
+    '(operating-system
+      ((name symbol))
+      ((os-family batch-dialect))
+      (;;(3b1		*unknown*)
+       (acorn		*unknown*)
+       (aix		unix)
+       (alliant		*unknown*)
+       (amiga		*unknown*)
+       (apollo		unix)
+       (apple2		*unknown*)
+       (arm		*unknown*)
+       (atari.st	*unknown*)
+       (cdc		*unknown*)
+       (celerity	*unknown*)
+       (concurrent	*unknown*)
+       (convex		*unknown*)
+       (encore		*unknown*)
+       (harris		*unknown*)
+       (hp-ux		unix)
+       (hp48		*unknown*)
+       (isis		*unknown*)
+       (linux		unix)
+       (mac		*unknown*)
+       (masscomp	unix)
+       (ms-dos		dos)
+       (mips		*unknown*)
+       (ncr		*unknown*)
+       (newton		*unknown*)
+       (next		unix)
+       (novell		*unknown*)
+       (os/2		dos)
+       (prime		*unknown*)
+       (psion		*unknown*)
+       (pyramid		*unknown*)
+       (sequent		*unknown*)
+       (sgi		*unknown*)
+       (stratus		*unknown*)
+       (sun-os		unix)
+       (transputer	*unknown*)
+       (unicos		unix)
+       (unix		unix)
+       (vms		vms)
+       (*unknown*	*unknown*)
+       )))
+
+  ((database 'add-domain) '(operating-system operating-system #f symbol #f))
+  )