Megatest

	 (string-split patts ","))
	res)
      #t))

;; (map print (map car (hash-table->alist (read-config "runconfigs.config" #f #t))))
(define (common:get-runconfig-targets #!key (configf #f))
  (let ((targs       (sort (map car (hash-table->alist
				     (or configf ;; NOTE: There is no value in using runconfig:read here.
					 (read-config (conc *toppath* "/runconfigs.config")
						      #f #t)
					 (make-hash-table))))
			   string<?))
	(target-patt (args:get-arg "-target")))
    (if target-patt
	(filter (lambda (x)

(define (calc-allow-system allow-system section sections)
  (if sections
      (and (or (equal? "default" section)
	       (member section sections))
	   allow-system) ;; account for sections and return allow-system as it might be a symbol such as return-strings
      allow-system))
    
;; given a config hash and a section name, apply that section to all matching sections (using wildcard % or regex if /..../)
;; remove the section when done so that there is no downstream clobbering
;;
(define (configf:apply-wildcards ht section-name)
  (if (hash-table-exists? ht section-name)
      (let ((vars (hash-table-ref ht section-name))
            (rx   (regexp (if (string-contains section-name "%")
                              (string-substitute section-name "%" ".*")
                              section-name))))
        (for-each
         (lambda (section)
           (if (and section-name
                    section 
                    (not (string=? section-name section))
                    (string-match rx section))
               (for-each
                (lambda (bundle)
                  (let ((key  (car bundle))
                        (val  (cadr bundle))
                        (meta (if (> (length bundle) 2)(caddr bundle) #f)))
                    (hash-table-set! ht section (config:assoc-safe-add (hash-table-ref ht section) key val metadata: meta))))
                vars)))
         (hash-table-keys ht))))
  ht)

;; read a config file, returns hash table of alists

;; read a config file, returns hash table of alists
;; adds to ht if given (must be #f otherwise)
;; envion-patt is a regex spec that identifies sections that will be eval'd
;; in the environment on the fly
;; sections: #f => get all, else list of sections to gather
;; post-section-procs alist of section-pattern => proc, where: (proc section-name next-section-name ht curr-path)
;; apply-wildcards: #t/#f - apply vars from targets with % wildcards to all matching sections
;;
(define (read-config path ht allow-system #!key (environ-patt #f)(curr-section #f)(sections #f)(settings (make-hash-table))(keep-filenames #f)(post-section-procs '())(apply-wildcards #t))
  (debug:print-info 5 *default-log-port* "read-config " path " allow-system " allow-system " environ-patt " environ-patt " curr-section: " curr-section " sections: " sections " pwd: " (current-directory))
  (debug:print 9 *default-log-port* "START: " path)
  (if (and (not (port? path))
	   (not (file-exists? path))) ;; for case where we are handed a port
      (begin 
	(debug:print-info 1 *default-log-port* "read-config - file not found " path " current path: " (current-directory))
	;; WARNING: This is a risky change but really, we should not return an empty hash table if no file read?
	#f) ;; (if (not ht)(make-hash-table) ht))
      (let ((inp        (if (string? path)
			    (open-input-file path)
			      path)) ;; we can be handed a port
	    (res        (if (not ht)(make-hash-table) ht))
	    (metapath   (if (or (debug:debug-mode 9)
				keep-filenames)
			    path #f))
            (process-wildcards  (lambda (res curr-section-name)
                                  (if (and apply-wildcards
                                           (or (string-contains curr-section-name "%")   ;; wildcard
                                               (string-match "/.*/" curr-section-name))) ;; regex
                                      (begin
                                        (configf:apply-wildcards res curr-section-name)
                                        (hash-table-delete! res curr-section-name))))))  ;; NOTE: if the section is a wild card it will be REMOVED from res 
	(let loop ((inl               (configf:read-line inp res (calc-allow-system allow-system curr-section sections) settings)) ;; (read-line inp))
		   (curr-section-name (if curr-section curr-section "default"))
		   (var-flag #f);; turn on for key-var-pr and cont-ln-rx, turn off elsewhere
		   (lead     #f))
	  (debug:print-info 8 *default-log-port* "curr-section-name: " curr-section-name " var-flag: " var-flag "\n   inl: \"" inl "\"")
	  (if (eof-object? inl) 
	      (begin
                ;; process last section for wildcards
                (process-wildcards res curr-section-name)
		(if (string? path) ;; we received a path, not a port, thus we are responsible for closing it.
		    (close-input-port inp))
		(hash-table-delete! res "") ;; we are using "" as a dumping ground and must remove it before returning the ht
		(debug:print 9 *default-log-port* "END: " path)
		res)
	      (regex-case 
	       inl 

							(for-each 
							 (lambda (dat)
							   (let ((patt (car dat))
								 (proc (cdr dat)))
							     (if (string-match patt curr-section-name)
								 (proc curr-section-name section-name res path))))
							 post-section-procs)
                                                        ;; after gathering the vars for a section and if apply-wildcards is true and if there is a wildcard in the section name process wildcards
                                                        ;; NOTE: we are processing the curr-section-name, NOT section-name.
                                                        (process-wildcards res curr-section-name)
							(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings)
							      ;; if we have the sections list then force all settings into "" and delete it later?
							      (if (or (not sections) 
								      (member section-name sections))
								  section-name "") ;; stick everything into ""
							      #f #f)))
	       (configf:key-sys-pr ( x key cmd      ) (if (calc-allow-system allow-system curr-section-name sections)

				   ;; (conc ":" (car keyval) " " (cadr keyval)))
				   (cadr keyval))
				 keydat)
			    "/"))
	       (item-path  (db:test-get-item-path testdat))
	       ;; this next block was added to fix a bug where variables were
               ;; needed. Revisit this.
	       (runconfig  (let ((runconfigf (conc  *toppath* "/runconfigs.config"))) ;; no rush but it would be good to convert this call to use runconfig:read
	 		     (if (file-exists? runconfigf)
	 			 (handle-exceptions
                                   exn
                                   #f  ;; do nothing, just keep on trucking ....
                                   (setup-env-defaults runconfigf run-id (make-hash-table) keydat environ-patt: keystring))
	 			 (make-hash-table))))
	       (testconfig    (begin

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<div id="footer-text">
Version 1.0<br>
Last updated 2016-12-12 13:03:08 PST
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-------------------------
[items]
A a b c
B d e f
-------------------------

Then the config file would effectively appear to contain an items section
exactly like the output from the script. This is useful when dynamically
creating items, itemstables and other config structures. You can see the
expansion of the call by looking in the cached files (look in your linktree
for megatest.config and runconfigs.config cache files and in your test run
areas for the expanded and cached testconfig).

Wildcards and regexes in Targets

-------------------------
[a/2/b]
VAR1 VAL1

[a/%/b]
VAR1 VAL2
-------------------------

Will result in:

-------------------------
[a/2/b]
VAR1 VAL2
-------------------------

Can use either wildcard of "%" or a regular expression:

[/abc.*def/]

Disk Space Checks
^^^^^^^^^^^^^^^^^

Some parameters you can put in the [setup] section of megatest.config:

-------------------

			             mtconfig
				     environ-patt: "env-override"
				     given-toppath: toppath
				     pathenvvar: "MT_RUN_AREA_HOME"))
	     (first-rundat  (let ((toppath (if toppath 
					       toppath
					       (car first-pass))))
			      (read-config ;; (conc toppath "/runconfigs.config") ;; this should be converted to runconfig:read but it is non-trivial, leaving it for now.
			       (conc (if (string? toppath)
					 toppath
					 (get-environment-variable "MT_RUN_AREA_HOME"))
				     "/runconfigs.config")
			       *runconfigdat* #t 
			       sections: sections))))
	(set! *runconfigdat* first-rundat)

				    environ-patt: "env-override"
				    given-toppath: toppath
				    pathenvvar: "MT_RUN_AREA_HOME"))
		     (runconfigdat (begin     ;; this read of the runconfigs will see any adjustments made by re-reading megatest.config
				     (for-each (lambda (kt)
						 (setenv (car kt) (cadr kt)))
					       key-vals)
				     (read-config (conc toppath "/runconfigs.config") *runconfigdat* #t ;; consider using runconfig:read some day ...
						  sections: sections))))
		(if cancreate (configf:write-alist runconfigdat rccachef))
		(set! *runconfigdat* runconfigdat)
		(if cancreate (configf:write-alist *configdat* mtcachef))
		(if cancreate (set! *configstatus* 'fulldata))))
	    ;; no configs found? should not happen but let's try to recover gracefully, return an empty hash-table
	    (set! *configdat* (make-hash-table))
	    )))
     ;; else read what you can and set the flag accordingly
     (else
      (let* ((cfgdat   (find-and-read-config 
			(or (args:get-arg "-config") "megatest.config")
			environ-patt: "env-override"
			given-toppath: (get-environment-variable "MT_RUN_AREA_HOME")
			pathenvvar: "MT_RUN_AREA_HOME")))
	(if cfgdat
	    (let* ((toppath  (or (get-environment-variable "MT_RUN_AREA_HOME")(cadr cfgdat)))
		   (rdat     (read-config (conc toppath  ;; convert this to use runconfig:read!
						"/runconfigs.config") *runconfigdat* #t sections: sections)))
	      (set! *configinfo*   cfgdat)
	      (set! *configdat*    (car cfgdat))
	      (set! *runconfigdat* rdat)
	      (set! *toppath*      toppath)
	      (set! *configstatus* 'partial))
	    (begin

	       (sections (if target (list "default" target) #f))
	       (data     (begin
			   (setenv "MT_RUN_AREA_HOME" *toppath*)
			   (if key-vals
			       (for-each (lambda (kt)
					   (setenv (car kt) (cadr kt)))
					 key-vals))
			   ;; (read-config (conc *toppath* "/runconfigs.config") #f #t sections: sections))))
                           (runconfig:read (conc *toppath* "/runconfigs.config") target #f))))
	  (if (and rundir ;; have all needed variabless
		   (directory-exists? rundir)
		   (file-write-access? rundir))
	      (begin
		(configf:write-alist data cfgf)
		;; force re-read of megatest.config - this resolves circular references between megatest.config
		(launch:setup force: #t)

	;; keep this one local
	(cond
	 ((and (args:get-arg "-section")
	       (args:get-arg "-var"))
	  (let ((val (or (configf:lookup data (args:get-arg "-section")(args:get-arg "-var"))
			 (configf:lookup data "default" (args:get-arg "-var")))))
	    (if val (print val))))
	 ((or (not (args:get-arg "-dumpmode"))
              (string=? (args:get-arg "-dumpmode") "ini"))
	  (configf:config->ini data))
	 ((string=? (args:get-arg "-dumpmode") "sexp")
	  (pp (hash-table->alist data)))
	 ((string=? (args:get-arg "-dumpmode") "json")
	  (json-write data))


	 (else
	  (debug:print-error 0 *default-log-port* "-dumpmode of " (args:get-arg "-dumpmode") " not recognised")))
	(set! *didsomething* #t))
      (pop-directory)))

(if (args:get-arg "-show-config")
    (let ((tl   (launch:setup))

;;======================================================================
;; read a config file, loading only the section pertinent
;; to this run field1val/field2val/field3val ...
;;======================================================================

(use format directory-utils)

(declare (unit runconfig))
(declare (uses common))

(include "common_records.scm")

(define (runconfig:read fname target environ-patt)
  (let ((ht (make-hash-table)))
    (hash-table-set! ht target '())
    (read-config fname ht #t environ-patt: environ-patt sections: (if target (list "default" target) #f))))

;; NB// to process a runconfig ensure to use environ-patt with target!
;;
(define (setup-env-defaults fname run-id already-seen keyvals #!key (environ-patt #f)(change-env #t))
  (let* ((keys    (map car keyvals))
	 (thekey  (if keyvals 
		      (string-intersperse (map (lambda (x)(if x x "-na-")) (map cadr keyvals)) "/")
		      (or (common:args-get-target)
			  (get-environment-variable "MT_TARGET")
			  (begin
			    (debug:print-error 0 *default-log-port* "setup-env-defaults called with no run-id or -target or -reqtarg")
			    "nothing matches this I hope"))))
	 ;; Why was system disallowed in the reading of the runconfigs file?
	 ;; NOTE: Should be setting env vars based on (target|default)
	 (confdat   (runconfig:read fname thekey environ-patt))
	 (whatfound (make-hash-table))
	 (finaldat  (make-hash-table))
	 (sections (list "default" thekey)))
    (if (not *target*)(set! *target* thekey)) ;; may save a db access or two but repeats db:get-target code
    (debug:print 4 *default-log-port* "Using key=\"" thekey "\"")

    (if change-env