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(define configf:section-rx (regexp "^\\[(.*)\\]\\s*$"))
(define configf:blank-l-rx (regexp "^\\s*$"))
(define configf:key-sys-pr (regexp "^(\\S+)\\s+\\[system\\s+(\\S+.*)\\]\\s*$"))
(define configf:key-val-pr (regexp "^(\\S+)(\\s+(.*)|())$"))
(define configf:key-no-val (regexp "^(\\S+)(\\s*)$"))
(define configf:comment-rx (regexp "^\\s*#.*"))
(define configf:cont-ln-rx (regexp "^(\\s+)(\\S+.*)$"))
;; read a line and process any #{ ... } constructs
(define configf:var-expand-regex (regexp "^(.*)#\\{(scheme|system|shell|getenv|get|runconfigs-get|rget)\\s+([^\\}\\{]*)\\}(.*)"))
(define (configf:process-line l ht allow-system)
(let loop ((res l))
(if (string? res)
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(define configf:section-rx (regexp "^\\[(.*)\\]\\s*$"))
(define configf:blank-l-rx (regexp "^\\s*$"))
(define configf:key-sys-pr (regexp "^(\\S+)\\s+\\[system\\s+(\\S+.*)\\]\\s*$"))
(define configf:key-val-pr (regexp "^(\\S+)(\\s+(.*)|())$"))
(define configf:key-no-val (regexp "^(\\S+)(\\s*)$"))
(define configf:comment-rx (regexp "^\\s*#.*"))
(define configf:cont-ln-rx (regexp "^(\\s+)(\\S+.*)$"))
(define configf:settings (regexp "^\\[configf:settings\\s+(\\S+)\\s+(\\S+)]\\s*$"))
;; read a line and process any #{ ... } constructs
(define configf:var-expand-regex (regexp "^(.*)#\\{(scheme|system|shell|getenv|get|runconfigs-get|rget)\\s+([^\\}\\{]*)\\}(.*)"))
(define (configf:process-line l ht allow-system)
(let loop ((res l))
(if (string? res)
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(if targ
(or (configf:lookup config targ var)
(configf:lookup config "default" var))
(configf:lookup config "default" var))))
;; this was inline but I'm pretty sure that is a hold over from when it was *very* simple ...
;;
(define (configf:read-line p ht allow-processing)
(let loop ((inl (read-line p)))
(let ((cont-line (and (string? inl)
(not (string-null? inl))
(equal? "\\" (string-take-right inl 1)))))
(if cont-line ;; last character is \
(let ((nextl (read-line p)))
(if (not (eof-object? nextl))
(loop (string-append (if cont-line
(string-take inl (- (string-length inl) 1))
inl)
nextl))))
(case allow-processing ;; if (and allow-processing
;; (not (eq? allow-processing 'return-string)))
((#t #f)
(configf:process-line inl ht allow-processing))
((return-string)
inl)
(else
(configf:process-line inl ht allow-processing)))))))
;; 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
(define (read-config path ht allow-system #!key (environ-patt #f)(curr-section #f)(sections #f))
(debug:print-info 5 "read-config " path " allow-system " allow-system " environ-patt " environ-patt " curr-section: " curr-section " sections: " sections " pwd: " (current-directory))
(debug:print 9 "START: " path)
(if (not (file-exists? path))
(begin
(debug:print-info 1 "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 (open-input-file path))
(res (if (not ht)(make-hash-table) ht)))
(let loop ((inl (configf:read-line inp res allow-system)) ;; (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 "curr-section-name: " curr-section-name " var-flag: " var-flag "\n inl: \"" inl "\"")
(if (eof-object? inl)
(begin
(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 "END: " path)
res)
(regex-case
inl
(configf:comment-rx _ (loop (configf:read-line inp res allow-system) curr-section-name #f #f))
(configf:blank-l-rx _ (loop (configf:read-line inp res allow-system) curr-section-name #f #f))
(configf:include-rx ( x include-file ) (let* ((curr-conf-dir (pathname-directory path))
(full-conf (if (absolute-pathname? include-file)
include-file
(nice-path
(conc (if curr-conf-dir
curr-conf-dir
".")
"/" include-file)))))
(if (file-exists? full-conf)
(begin
;; (push-directory conf-dir)
(debug:print 9 "Including: " full-conf)
(read-config full-conf res allow-system environ-patt: environ-patt curr-section: curr-section-name sections: sections)
;; (pop-directory)
(loop (configf:read-line inp res allow-system) curr-section-name #f #f))
(begin
(debug:print '(2 9) "INFO: include file " include-file " not found (called from " path ")")
(debug:print 2 " " full-conf)
(loop (configf:read-line inp res allow-system) curr-section-name #f #f)))))
(configf:section-rx ( x section-name ) (loop (configf:read-line inp res allow-system)
;; 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 allow-system
(let ((alist (hash-table-ref/default res curr-section-name '()))
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(if targ
(or (configf:lookup config targ var)
(configf:lookup config "default" var))
(configf:lookup config "default" var))))
;; this was inline but I'm pretty sure that is a hold over from when it was *very* simple ...
;;
(define (configf:read-line p ht allow-processing settings)
(let loop ((inl (read-line p)))
(let ((cont-line (and (string? inl)
(not (string-null? inl))
(equal? "\\" (string-take-right inl 1)))))
(if cont-line ;; last character is \
(let ((nextl (read-line p)))
(if (not (eof-object? nextl))
(loop (string-append (if cont-line
(string-take inl (- (string-length inl) 1))
inl)
nextl))))
(let ((res (case allow-processing ;; if (and allow-processing
;; (not (eq? allow-processing 'return-string)))
((#t #f)
(configf:process-line inl ht allow-processing))
((return-string)
inl)
(else
(configf:process-line inl ht allow-processing)))))
(if (and (string? res)
(not (equal? (hash-table-ref/default settings "trim-trailing-spaces" "no") "no")))
(string-substitute "\\s+$" "" res)
res))))))
;; 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
(define (read-config path ht allow-system #!key (environ-patt #f)(curr-section #f)(sections #f)(settings (make-hash-table)))
(debug:print-info 5 "read-config " path " allow-system " allow-system " environ-patt " environ-patt " curr-section: " curr-section " sections: " sections " pwd: " (current-directory))
(debug:print 9 "START: " path)
(if (not (file-exists? path))
(begin
(debug:print-info 1 "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 (open-input-file path))
(res (if (not ht)(make-hash-table) ht)))
(let loop ((inl (configf:read-line inp res allow-system 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 "curr-section-name: " curr-section-name " var-flag: " var-flag "\n inl: \"" inl "\"")
(if (eof-object? inl)
(begin
(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 "END: " path)
res)
(regex-case
inl
(configf:comment-rx _ (loop (configf:read-line inp res allow-system settings) curr-section-name #f #f))
(configf:blank-l-rx _ (loop (configf:read-line inp res allow-system settings) curr-section-name #f #f))
(configf:settings ( x setting val ) (begin
(hash-table-set! settings setting val)
(loop (configf:read-line inp res allow-system settings) curr-section-name #f #f)))
(configf:include-rx ( x include-file ) (let* ((curr-conf-dir (pathname-directory path))
(full-conf (if (absolute-pathname? include-file)
include-file
(nice-path
(conc (if curr-conf-dir
curr-conf-dir
".")
"/" include-file)))))
(if (file-exists? full-conf)
(begin
;; (push-directory conf-dir)
(debug:print 9 "Including: " full-conf)
(read-config full-conf res allow-system environ-patt: environ-patt curr-section: curr-section-name sections: sections settings: settings)
;; (pop-directory)
(loop (configf:read-line inp res allow-system settings) curr-section-name #f #f))
(begin
(debug:print '(2 9) "INFO: include file " include-file " not found (called from " path ")")
(debug:print 2 " " full-conf)
(loop (configf:read-line inp res allow-system settings) curr-section-name #f #f)))))
(configf:section-rx ( x section-name ) (loop (configf:read-line inp res allow-system 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 allow-system
(let ((alist (hash-table-ref/default res curr-section-name '()))
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(hash-table-set! res curr-section-name
(config:assoc-safe-add alist
key
(case allow-system
((return-procs) val-proc)
((return-string) cmd)
(else (val-proc)))))
(loop (configf:read-line inp res allow-system) curr-section-name #f #f))
(loop (configf:read-line inp res allow-system) curr-section-name #f #f)))
(configf:key-val-pr ( x key unk1 val unk2 ) (let* ((alist (hash-table-ref/default res curr-section-name '()))
(envar (and environ-patt (string-search (regexp environ-patt) curr-section-name)))
(realval (if envar
(config:eval-string-in-environment val)
val)))
(debug:print-info 6 "read-config env setting, envar: " envar " realval: " realval " val: " val " key: " key " curr-section-name: " curr-section-name)
(if envar (safe-setenv key realval))
(debug:print 10 " setting: [" curr-section-name "] " key " = " val)
(hash-table-set! res curr-section-name
(config:assoc-safe-add alist key realval))
(loop (configf:read-line inp res allow-system) curr-section-name key #f)))
(configf:key-no-val ( x key val) (let* ((alist (hash-table-ref/default res curr-section-name '())))
(debug:print 10 " setting: [" curr-section-name "] " key " = #t")
(hash-table-set! res curr-section-name
(config:assoc-safe-add alist key #t))
(loop (configf:read-line inp res allow-system) curr-section-name key #f)))
;; if a continued line
(configf:cont-ln-rx ( x whsp val ) (let ((alist (hash-table-ref/default res curr-section-name '())))
(if var-flag ;; if set to a string then we have a continued var
(let ((newval (conc
(config-lookup res curr-section-name var-flag) "\n"
;; trim lead from the incoming whsp to support some indenting.
(if lead
(string-substitute (regexp lead) "" whsp)
"")
val)))
;; (print "val: " val "\nnewval: \"" newval "\"\nvarflag: " var-flag)
(hash-table-set! res curr-section-name
(config:assoc-safe-add alist var-flag newval))
(loop (configf:read-line inp res allow-system) curr-section-name var-flag (if lead lead whsp)))
(loop (configf:read-line inp res allow-system) curr-section-name #f #f))))
(else (debug:print 0 "ERROR: problem parsing " path ",\n \"" inl "\"")
(set! var-flag #f)
(loop (configf:read-line inp res allow-system) curr-section-name #f #f))))))))
;; pathenvvar will set the named var to the path of the config
(define (find-and-read-config fname #!key (environ-patt #f)(given-toppath #f)(pathenvvar #f))
(let* ((curr-dir (current-directory))
(configinfo (find-config fname toppath: given-toppath))
(toppath (car configinfo))
(configfile (cadr configinfo)))
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(hash-table-set! res curr-section-name
(config:assoc-safe-add alist
key
(case allow-system
((return-procs) val-proc)
((return-string) cmd)
(else (val-proc)))))
(loop (configf:read-line inp res allow-system settings) curr-section-name #f #f))
(loop (configf:read-line inp res allow-system settings) curr-section-name #f #f)))
(configf:key-val-pr ( x key unk1 val unk2 ) (let* ((alist (hash-table-ref/default res curr-section-name '()))
(envar (and environ-patt (string-search (regexp environ-patt) curr-section-name)))
(realval (if envar
(config:eval-string-in-environment val)
val)))
(debug:print-info 6 "read-config env setting, envar: " envar " realval: " realval " val: " val " key: " key " curr-section-name: " curr-section-name)
(if envar (safe-setenv key realval))
(debug:print 10 " setting: [" curr-section-name "] " key " = " val)
(hash-table-set! res curr-section-name
(config:assoc-safe-add alist key realval))
(loop (configf:read-line inp res allow-system settings) curr-section-name key #f)))
(configf:key-no-val ( x key val) (let* ((alist (hash-table-ref/default res curr-section-name '())))
(debug:print 10 " setting: [" curr-section-name "] " key " = #t")
(hash-table-set! res curr-section-name
(config:assoc-safe-add alist key #t))
(loop (configf:read-line inp res allow-system settings) curr-section-name key #f)))
;; if a continued line
(configf:cont-ln-rx ( x whsp val ) (let ((alist (hash-table-ref/default res curr-section-name '())))
(if var-flag ;; if set to a string then we have a continued var
(let ((newval (conc
(config-lookup res curr-section-name var-flag) "\n"
;; trim lead from the incoming whsp to support some indenting.
(if lead
(string-substitute (regexp lead) "" whsp)
"")
val)))
;; (print "val: " val "\nnewval: \"" newval "\"\nvarflag: " var-flag)
(hash-table-set! res curr-section-name
(config:assoc-safe-add alist var-flag newval))
(loop (configf:read-line inp res allow-system settings) curr-section-name var-flag (if lead lead whsp)))
(loop (configf:read-line inp res allow-system settings) curr-section-name #f #f))))
(else (debug:print 0 "ERROR: problem parsing " path ",\n \"" inl "\"")
(set! var-flag #f)
(loop (configf:read-line inp res allow-system settings) curr-section-name #f #f))))))))
;; pathenvvar will set the named var to the path of the config
(define (find-and-read-config fname #!key (environ-patt #f)(given-toppath #f)(pathenvvar #f))
(let* ((curr-dir (current-directory))
(configinfo (find-config fname toppath: given-toppath))
(toppath (car configinfo))
(configfile (cadr configinfo)))
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