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;; 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) (return-env-delta-accum #f)
(sections #f) (settings (make-hash-table)) (keep-filenames #f)
(post-section-procs '()) (apply-wildcards #t) (env-delta '()))
(debug:print 9 *default-log-port* "START: " path)
(if (and (not (port? path))
(not (common: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))
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;; 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 9 *default-log-port* "START: " path)
(if (and (not (port? path))
(not (common: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))
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(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)
(env-delta-accum env-delta))
(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))
(if (list? sections) ;; delete all sections except given when sections is provided
(for-each
(lambda (section)
(if (not (member section sections))
(hash-table-delete! res section))) ;; we are using "" as a dumping ground and must remove it before returning the ht
(hash-table-keys res)))
(debug:print 9 *default-log-port* "END: " path)
(if return-env-delta-accum
env-delta-accum
res)
curr-section-name #f #f env-delta-accum))
(configf:blank-l-rx _ (loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings)
curr-section-name #f #f env-delta-accum))
(configf:settings ( x setting val )
(begin
(hash-table-set! settings setting val)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings)
curr-section-name #f #f env-delta-accum)))
(configf:include-rx ( x include-file )
(let* ((curr-conf-dir (pathname-directory path))
(full-conf (if (absolute-pathname? include-file)
include-file
(common:nice-path
(conc (if curr-conf-dir
curr-conf-dir
".")
"/" include-file)))))
(if (common:file-exists? full-conf)
(begin
;; (push-directory conf-dir)
(debug:print 9 *default-log-port* "Including: " full-conf)
(read-config full-conf res allow-system environ-patt: environ-patt
curr-section: curr-section-name sections: sections settings: settings
keep-filenames: keep-filenames env-delta: env-delta-accum) ; BB: todo: how do we get update env-delta-accum from updates needed from nested read-config??
;; (pop-directory)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f env-delta-accum))
(begin
(debug:print '(2 9) #f "INFO: include file " include-file " not found (called from " path ")")
(debug:print 2 *default-log-port* " " full-conf)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings)
curr-section-name #f #f env-delta-accum)))))
(configf:script-rx ( x include-script params);; handle-exceptions
;; exn
;; (begin
;; (debug:print '(0 2 9) #f "INFO: include from script " include-script " failed.")
;; (loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f))
(if (and (common:file-exists? include-script)(file-execute-access? include-script))
(let* ((env-delta (configf:cfgdat->env-alist curr-section-name res))
(new-inp-port
(common:with-env-vars
env-delta
(lambda ()
(open-input-pipe (conc include-script " " params))))))
(debug:print '(2 9) *default-log-port* "Including from script output: " include-script)
;; (print "We got here, calling read-config next. Port is: " new-inp-port)
(read-config new-inp-port res allow-system environ-patt: environ-patt curr-section: curr-section-name sections: sections settings: settings keep-filenames: keep-filenames) ; BB: todo: how do we get update env-delta-accum from updates needed from nested read-config??
(close-input-port new-inp-port)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f env-delta-accum))
(begin
(debug:print 0 *default-log-port* "Script not found or not exectutable: " include-script)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f env-delta-accum)))
) ;; )
(configf:section-rx ( x section-name )
(begin
;; call post-section-procs
(for-each
(lambda (dat)
(let ((patt (car dat))
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(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))
(if (list? sections) ;; delete all sections except given when sections is provided
(for-each
(lambda (section)
(if (not (member section sections))
(hash-table-delete! res section))) ;; we are using "" as a dumping ground and must remove it before returning the ht
(hash-table-keys res)))
(debug:print 9 *default-log-port* "END: " path)
res
) ;; retval
(regex-case
inl
(configf:comment-rx _ (loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings)
curr-section-name #f #f))
(configf:blank-l-rx _ (loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings)
curr-section-name #f #f))
(configf:settings ( x setting val )
(begin
(hash-table-set! settings setting val)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) 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
(common:nice-path
(conc (if curr-conf-dir
curr-conf-dir
".")
"/" include-file)))))
(if (common:file-exists? full-conf)
(begin
;; (push-directory conf-dir)
(debug:print 9 *default-log-port* "Including: " full-conf)
(read-config full-conf res allow-system environ-patt: environ-patt
curr-section: curr-section-name sections: sections settings: settings
keep-filenames: keep-filenames)
;; (pop-directory)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f))
(begin
(debug:print '(2 9) #f "INFO: include file " include-file " not found (called from " path ")")
(debug:print 2 *default-log-port* " " full-conf)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings)
curr-section-name #f #f)))))
(configf:script-rx ( x include-script params);; handle-exceptions
;; exn
;; (begin
;; (debug:print '(0 2 9) #f "INFO: include from script " include-script " failed.")
;; (loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f))
(if (and (common:file-exists? include-script)(file-execute-access? include-script))
(let* ((env-delta (configf:cfgdat->env-alist curr-section-name res))
(new-inp-port
(common:with-env-vars
env-delta
(lambda ()
(open-input-pipe (conc include-script " " params))))))
(debug:print '(2 9) *default-log-port* "Including from script output: " include-script)
;; (print "We got here, calling read-config next. Port is: " new-inp-port)
(read-config new-inp-port res allow-system environ-patt: environ-patt curr-section: curr-section-name sections: sections settings: settings keep-filenames: keep-filenames)
(close-input-port new-inp-port)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f))
(begin
(debug:print 0 *default-log-port* "Script not found or not exectutable: " include-script)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f)))
) ;; )
(configf:section-rx ( x section-name )
(begin
;; call post-section-procs
(for-each
(lambda (dat)
(let ((patt (car dat))
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(if (not (hash-table-ref/default res section-name #f))(hash-table-set! res section-name '())) ;; ensure that mere mention of a section is not lost
(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 "". NOPE: We need new strategy. Put stuff in correct sections and then delete all sections later.
section-name
#f #f env-delta-accum)))
(configf:key-sys-pr ( x key cmd )
(if (calc-allow-system allow-system curr-section-name sections)
(let ((alist (hash-table-ref/default res curr-section-name '()))
(val-proc (lambda ()
(let* ((start-time (current-seconds))
(env-delta (configf:cfgdat->env-alist curr-section-name res))
(cmdres (process:cmd-run->list cmd delta-env-alist-or-hash-table: env-delta)) ;; BB: here is where [system is exec'd. needs to have env from other vars!
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(if (not (hash-table-ref/default res section-name #f))(hash-table-set! res section-name '())) ;; ensure that mere mention of a section is not lost
(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 "". NOPE: We need new strategy. Put stuff in correct sections and then delete all sections later.
section-name
#f #f)))
(configf:key-sys-pr ( x key cmd )
(if (calc-allow-system allow-system curr-section-name sections)
(let ((alist (hash-table-ref/default res curr-section-name '()))
(val-proc (lambda ()
(let* ((start-time (current-seconds))
(env-delta (configf:cfgdat->env-alist curr-section-name res))
(cmdres (process:cmd-run->list cmd delta-env-alist-or-hash-table: env-delta)) ;; BB: here is where [system is exec'd. needs to have env from other vars!
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(config:assoc-safe-add alist
key
(case (calc-allow-system allow-system curr-section-name sections)
((return-procs) val-proc)
((return-string) cmd)
(else (val-proc)))
metadata: metapath))
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f env-delta-accum))
(loop (configf:read-line inp res
(calc-allow-system allow-system curr-section-name sections)
settings)
curr-section-name #f #f env-delta-accum)))
(configf:key-no-val ( x key val)
(let* ((alist (hash-table-ref/default res curr-section-name '()))
(fval (or (if (string? val) val #f) ""))) ;; fval should be either "" or " " (one or more spaces)
(debug:print 10 *default-log-port* " setting: [" curr-section-name "] " key " = #t")
(safe-setenv key fval)
(hash-table-set! res curr-section-name
(config:assoc-safe-add alist key fval metadata: metapath))
(loop (configf:read-line inp res
(calc-allow-system allow-system curr-section-name sections)
settings)
curr-section-name key #f (cons (cons key fval) env-delta-accum))))
(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 *default-log-port* "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 *default-log-port* " setting: [" curr-section-name "] " key " = " val)
(hash-table-set! res curr-section-name
(config:assoc-safe-add alist key realval metadata: metapath))
(loop (configf:read-line inp res
(calc-allow-system allow-system curr-section-name sections) settings)
curr-section-name key #f
(cons (cons envar realval) env-delta-accum))))
;; 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 metadata: metapath))
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name var-flag (if lead lead whsp) env-delta-accum))
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f env-delta-accum))))
(else (debug:print-error 0 *default-log-port* "problem parsing " path ",\n \"" inl "\"")
(set! var-flag #f)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f env-delta-accum))))
) ;; end loop
)))
;; 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))
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(config:assoc-safe-add alist
key
(case (calc-allow-system allow-system curr-section-name sections)
((return-procs) val-proc)
((return-string) cmd)
(else (val-proc)))
metadata: metapath))
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f))
(loop (configf:read-line inp res
(calc-allow-system allow-system curr-section-name sections)
settings)
curr-section-name #f #f)))
(configf:key-no-val ( x key val)
(let* ((alist (hash-table-ref/default res curr-section-name '()))
(fval (or (if (string? val) val #f) ""))) ;; fval should be either "" or " " (one or more spaces)
(debug:print 10 *default-log-port* " setting: [" curr-section-name "] " key " = #t")
(safe-setenv key fval)
(hash-table-set! res curr-section-name
(config:assoc-safe-add alist key fval metadata: metapath))
(loop (configf:read-line inp res
(calc-allow-system allow-system curr-section-name sections)
settings)
curr-section-name key #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 *default-log-port* "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 *default-log-port* " setting: [" curr-section-name "] " key " = " val)
(hash-table-set! res curr-section-name
(config:assoc-safe-add alist key realval metadata: metapath))
(loop (configf:read-line inp res
(calc-allow-system allow-system curr-section-name sections) 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 metadata: metapath))
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name var-flag (if lead lead whsp)))
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f))))
(else (debug:print-error 0 *default-log-port* "problem parsing " path ",\n \"" inl "\"")
(set! var-flag #f)
(loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings) curr-section-name #f #f))))
) ;; end loop
)))
;; 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))
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