Megatest

(declare (unit configfmod))
(declare (uses mtargs))
(declare (uses debugprint))
(declare (uses keysmod))

(module configfmod

	(
	 common:get-fields
	 common:nice-path
	 common:read-link-f
	 common:with-env-vars
	 configf:config->ini
	 configf:alist->config
	 configf:assoc-safe-add
	 configf:config->alist
	 configf:find-and-read-config
	 configf:get-section
	 configf:lookup
	 configf:lookup-number
	 configf:map-all-hier-alist
	 configf:read-alist
	 configf:read-config
	 configf:read-refdb
	 configf:section-var-set!
	 configf:section-vars
	 configf:set-section-var
	 configf:var-is?
	 configf:write-alist
	 configf:write-config
	 find-config
	 nice-path
	 process:cmd-run->list
	 runconfig:read
	 runconfigs-get
	 safe-setenv
	 configf:eval-string-in-environment
	)
	
(import scheme

	chicken.base
	chicken.condition
	chicken.file
	chicken.io

	srfi-69
	stack
	typed-records
	z3
	
	)



(define getenv get-environment-variable)
(define setenv set-environment-variable!)
(define unsetenv unset-environment-variable!)

;;======================================================================
;; move debug stuff to separate module then put these back where they belong
;;======================================================================

    (configf:read-config fname ht #t environ-patt: environ-patt sections: (if target (list "default" target) #f))))

;;======================================================================
;; Config file handling
;;======================================================================

;; convert to param?
(define configf:std-imports "(import configfmod commonmod)")
(define (configf:process-one matchdat l ht allow-system env-to-use linenum)
  (let* ((prestr  (list-ref matchdat 1))
	 (cmdtype (list-ref matchdat 2)) ;; eval, system, shell, getenv
	 (cmd     (list-ref matchdat 3))
	 (quotedcmd (conc "\""cmd"\""))
	 (poststr (list-ref matchdat 4))
	 (result  #f)
	 (start-time (current-seconds))
	 (cmdsym  (string->symbol cmdtype))
	 (fullcmd
	  (if (member cmdsym '(scheme scm))
	      `(eval-needed
		 ,(conc  configf:std-imports
			  "(import chicken.process-context.posix chicken.process-context)"
			  "(define setenv set-environment-variable)"
			  (conc "(lambda (ht)" cmd ")")))
	      (case cmdsym
		((system)     `(noeval-needed  ,(conc (configf:system ht quotedcmd))))
		((shell sh)   `(noeval-needed  ,(conc (string-translate (shell quotedcmd) "\n" " "))))
		((realpath rp)`(noeval-needed  ,(conc (common:nice-path quotedcmd))))
		((getenv gv)  `(noeval-needed  ,(conc (get-environment-variable cmd))))
		;; ((mtrah)      (conc (or *toppath* (get-environment-variable \"MT_RUN_AREA_HOME\"))))
		((get g)   
		 (match
		  (string-split cmd)
		  ((sect var)(configf:lookup ht sect var))
		  (else
		   (debug:print-error 0 *default-log-port* "#{get ...} used with only one parameter, \"" cmd "\", two needed.")
		   '(bad-param ,(conc "#{get ...} used with only one parameter, \"" cmd "\", two needed.")))))
		((runconfigs-get rget) `(noeval-needed ,(runconfigs-get ht quotedcmd))) ;; (conc "(lambda (ht)(runconfigs-get ht \"" cmd "\"))"))
		(else `(#f ,(conc "cmd: " cmd " not recognised")))))))
    (match
     fullcmd
     (('eval-needed newres)
      (handle-exceptions
	 exn
	 (begin
	   (debug:print 0 *default-log-port* "WARNING: failed to process config input \"" l "\", fullcmd="fullcmd", exn=" exn)
	   (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
	   ;; (print "exn=" (condition->list exn))
	   (set! result (conc "#{( " cmdtype ") " cmd "}, full expansion: " fullcmd)))
	 (if (or allow-system
		 (not (member cmdtype '("system" "shell" "sh"))))
	     (with-input-from-string newres
	       (lambda ()
		 (set! result (if env-to-use
				  ((eval (read) env-to-use) ht)
				  ((eval (read)) ht)
				  ))))
	     (set! result (conc "#{(" cmdtype ") "  cmd "}")))))
     (('noeval-needed newres)(set! result newres))
     ((#f errres)
      (debug:print 0 *default-log-port* "WARNING: failed to process config input \"" l "\".")))
    ;; we process as a result
    (let ((delta (- (current-seconds) start-time)))
      (debug:print-info (if (> delta 2) 0 9) *default-log-port* "for line \"" l "\"\n command:  " cmd " took " delta " seconds to run with output:\n   " result))
    (conc prestr result poststr)))
	      
(define (configf:process-line l ht allow-system env-to-use #!key (linenum #f))
  (let loop ((res l))
    (if (string? res)
	(let ((matchdat (string-search configf:var-expand-regex res)))
	  (if matchdat
	      (let ((result (configf:process-one matchdat l ht allow-system env-to-use linenum)))
		(loop result))
	      res))
	  res)))

(define (configf:process-line-old l ht allow-system env-to-use #!key (linenum #f))
  (let loop ((res l))
    (if (string? res)
	(let ((matchdat (string-search configf:var-expand-regex res)))
	  (if matchdat
	      (let* ((prestr  (list-ref matchdat 1))
		     (cmdtype (list-ref matchdat 2)) ;; eval, system, shell, getenv
		     (cmd     (list-ref matchdat 3))
		     (poststr (list-ref matchdat 4))

		     (if (> delta 2)
			 (debug:print-info 0 *default-log-port* "for line \"" l "\"\n command:  " cmd " took " delta " seconds to run with output:\n   " result)
			 (debug:print-info 9 *default-log-port* "for line \"" l "\"\n command:  " cmd " took " delta " seconds to run with output:\n   " result)))))
		(loop (conc prestr result poststr)))
	      res))
	res)))

;;======================================================================
;; Lookup a value in runconfigs based on -reqtarg or -target
;; 
(define (runconfigs-get config target var)
  (let ((targ target #;(common:args-get-target))) ;; (or (args:get-arg "-reqtarg")(args:get-arg "-target")(getenv "MT_TARGET"))))
    (if targ
	(or (configf:lookup config targ var)
	    (configf:lookup config "default" var))
	(configf:lookup config "default" var))))


;; pathenvvar will set the named var to the path of the config
(define (configf:find-and-read-config fname #!key (environ-patt #f)(given-toppath #f)(pathenvvar #f)(env-to-use #f))
  (let* ((curr-dir   (current-directory))
         (configinfo (find-config fname toppath: given-toppath))
	 (toppath    (car configinfo))
	 (configfile (cadr configinfo))
	 (set-fields (lambda (curr-section next-section ht path)