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;;;; ---------------------------------------------------------------------------
;;;; Generic support for configuration files
Francois-Rene Rideau
committed
(asdf/package:define-package :asdf/configuration
(:recycle :asdf/configuration :asdf)
(:use :common-lisp :asdf/compatibility :asdf/utility
:asdf/pathname :asdf/stream :asdf/os :asdf/image)
(:export
#:get-folder-path
#:user-configuration-directories #:system-configuration-directories
#:in-first-directory
#:in-user-configuration-directory #:in-system-configuration-directory
#:validate-configuration-form #:validate-configuration-file #:validate-configuration-directory
#:configuration-inheritance-directive-p
#:report-invalid-form #:invalid-configuration #:*ignored-configuration-form*
#:*clear-configuration-hook* #:clear-configuration #:register-clear-configuration-hook
#:resolve-location #:location-designator-p #:location-function-p #:*here-directory*
#:resolve-relative-location #:resolve-absolute-location))
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(in-package :asdf/configuration)
(define-condition invalid-configuration ()
((form :reader condition-form :initarg :form)
(location :reader condition-location :initarg :location)
(format :reader condition-format :initarg :format)
(arguments :reader condition-arguments :initarg :arguments :initform nil))
(:report (lambda (c s)
(format s (compatfmt "~@<~? (will be skipped)~@:>")
(condition-format c)
(list* (condition-form c) (condition-location c)
(condition-arguments c))))))
(defun* get-folder-path (folder)
(or ;; this semi-portably implements a subset of the functionality of lispworks' sys:get-folder-path
#+(and lispworks mswindows) (sys:get-folder-path folder)
;; read-windows-registry HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders\AppData
(ecase folder
(:local-appdata (getenv-absolute-directory "LOCALAPPDATA"))
(:appdata (getenv-absolute-directory "APPDATA"))
(:common-appdata (or (getenv-absolute-directory "ALLUSERSAPPDATA")
(subpathname* (getenv-absolute-directory "ALLUSERSPROFILE") "Application Data/"))))))
(defun* user-configuration-directories ()
(let ((dirs
`(,@(when (os-unix-p)
(cons
(subpathname* (getenv-absolute-directory "XDG_CONFIG_HOME") "common-lisp/")
(loop :for dir :in (getenv-absolute-directories "XDG_CONFIG_DIRS")
:collect (subpathname* dir "common-lisp/"))))
,@(when (os-windows-p)
`(,(subpathname* (get-folder-path :local-appdata) "common-lisp/config/")
,(subpathname* (get-folder-path :appdata) "common-lisp/config/")))
,(subpathname (user-homedir) ".config/common-lisp/"))))
(remove-duplicates (remove-if-not #'absolute-pathname-p dirs)
:from-end t :test 'equal)))
(defun* system-configuration-directories ()
(cond
((os-unix-p) '(#p"/etc/common-lisp/"))
((os-windows-p)
(if-let (it (subpathname* (get-folder-path :common-appdata) "common-lisp/config/"))
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(defun* in-first-directory (dirs x &key (direction :input))
(loop :with fun = (ecase direction
((nil :input :probe) 'probe-file*)
((:output :io) 'identity))
:for dir :in dirs
:thereis (and dir (funcall fun (merge-pathnames* x (ensure-directory-pathname dir))))))
(defun* in-user-configuration-directory (x &key (direction :input))
(in-first-directory (user-configuration-directories) x :direction direction))
(defun* in-system-configuration-directory (x &key (direction :input))
(in-first-directory (system-configuration-directories) x :direction direction))
(defun* configuration-inheritance-directive-p (x)
(let ((kw '(:inherit-configuration :ignore-inherited-configuration)))
(or (member x kw)
(and (length=n-p x 1) (member (car x) kw)))))
(defun* report-invalid-form (reporter &rest args)
(etypecase reporter
(null
(apply 'error 'invalid-configuration args))
(function
(apply reporter args))
((or symbol string)
(apply 'error reporter args))
(cons
(apply 'apply (append reporter args)))))
(defvar *ignored-configuration-form* nil)
(defun* validate-configuration-form (form tag directive-validator
&key location invalid-form-reporter)
(unless (and (consp form) (eq (car form) tag))
(setf *ignored-configuration-form* t)
(report-invalid-form invalid-form-reporter :form form :location location)
(return-from validate-configuration-form nil))
(loop :with inherit = 0 :with ignore-invalid-p = nil :with x = (list tag)
:for directive :in (cdr form)
:when (cond
((configuration-inheritance-directive-p directive)
(incf inherit) t)
((eq directive :ignore-invalid-entries)
(setf ignore-invalid-p t) t)
((funcall directive-validator directive)
t)
(ignore-invalid-p
nil)
(t
(setf *ignored-configuration-form* t)
(report-invalid-form invalid-form-reporter :form directive :location location)
nil))
:do (push directive x)
:finally
(unless (= inherit 1)
(report-invalid-form invalid-form-reporter
:arguments (list (compatfmt "~@<One and only one of ~S or ~S is required.~@:>")
:inherit-configuration :ignore-inherited-configuration)))
(return (nreverse x))))
(defun* validate-configuration-file (file validator &key description)
(let ((forms (read-file-forms file)))
(unless (length=n-p forms 1)
(error (compatfmt "~@<One and only one form allowed for ~A. Got: ~3i~_~S~@:>~%")
description forms))
(funcall validator (car forms) :location file)))
(defun* validate-configuration-directory (directory tag validator &key invalid-form-reporter)
"Map the VALIDATOR across the .conf files in DIRECTORY, the TAG will
be applied to the results to yield a configuration form. Current
values of TAG include :source-registry and :output-translations."
(let ((files (sort (ignore-errors
(remove-if
(directory* (make-pathname :name *wild* :type "conf" :defaults directory))))
#'string< :key #'namestring)))
`(,tag
,@(loop :for file :in files :append
(loop :with ignore-invalid-p = nil
:for form :in (read-file-forms file)
:when (eq form :ignore-invalid-entries)
:do (setf ignore-invalid-p t)
:else
:when (funcall validator form)
:collect form
:else
:when ignore-invalid-p
:do (setf *ignored-configuration-form* t)
:else
:do (report-invalid-form invalid-form-reporter :form form :location file)))
:inherit-configuration)))
(defun* resolve-relative-location (x &key ensure-directory wilden)
(ensure-pathname
(etypecase x
(pathname x)
(string (parse-unix-namestring
x :ensure-directory ensure-directory))
(cons
(if (null (cdr x))
(resolve-relative-location
(car x) :ensure-directory ensure-directory :wilden wilden)
(let* ((car (resolve-relative-location
(car x) :ensure-directory t :wilden nil)))
(resolve-relative-location
(cdr x) :ensure-directory ensure-directory :wilden wilden)
car))))
((eql :*/) *wild-directory*)
((eql :**/) *wild-inferiors*)
((eql :*.*.*) *wild-file*)
((eql :implementation)
(parse-unix-namestring
(implementation-identifier) :ensure-directory t))
((eql :implementation-type)
(parse-unix-namestring
(string-downcase (implementation-type)) :ensure-directory t))
(parse-unix-namestring (hostname) :ensure-directory t)))
:wilden (and wilden (not (pathnamep x)) (not (member x '(:*/ :**/ :*.*.*))))
:want-relative t))
(defvar *here-directory* nil
"This special variable is bound to the currect directory during calls to
PROCESS-SOURCE-REGISTRY in order that we be able to interpret the :here
directive.")
(defvar *user-cache* nil
"A specification as per RESOLVE-LOCATION of where the user keeps his FASL cache")
(defun compute-user-cache ()
(setf *user-cache*
(flet ((try (x &rest sub) (and x `(,x ,@sub))))
(or
(try (getenv-absolute-directory "XDG_CACHE_HOME") "common-lisp" :implementation)
(when (os-windows-p)
(try (or (get-folder-path :local-appdata)
(get-folder-path :appdata))
"common-lisp" "cache" :implementation))
'(:home ".cache" "common-lisp" :implementation)))))
(register-image-restore-hook 'compute-user-cache)
(defun* resolve-absolute-location (x &key ensure-directory wilden)
(ensure-pathname
(etypecase x
(pathname x)
(string
(let ((p #-mcl (parse-namestring x)
#+mcl (probe-posix x)))
#+mcl (unless p (error "POSIX pathname ~S does not exist" x))
(if ensure-directory (ensure-directory-pathname p) p)))
(return-from resolve-absolute-location
(resolve-absolute-location
(car x) :ensure-directory ensure-directory :wilden wilden)
(resolve-relative-location
(cdr x) :ensure-directory ensure-directory :wilden wilden)
(resolve-absolute-location
(car x) :ensure-directory t :wilden nil)))))
((eql :root)
;; special magic! we return a relative pathname,
;; but what it means to the output-translations is
;; "relative to the root of the source pathname's host and device".
(return-from resolve-absolute-location
(let ((p (make-pathname* :directory '(:relative))))
(if wilden (wilden p) p))))
((eql :home) (user-homedir))
((eql :here) (resolve-absolute-location
*here-directory* :ensure-directory t :wilden nil))
((eql :user-cache) (resolve-absolute-location
*user-cache* :ensure-directory t :wilden nil)))
:wilden (and wilden (not (pathnamep x)))
:want-absolute t))
;; Try to override declaration in previous versions of ASDF.
(declaim (ftype (function (t &key (:directory boolean) (:wilden boolean)
(:ensure-directory boolean)) t) resolve-location))
(defun* (resolve-location) (x &key ensure-directory wilden directory)
(when directory (setf ensure-directory t)) ;; :directory backward compatibility, until 2014-01-16.
(if (atom x)
(resolve-absolute-location x :ensure-directory ensure-directory :wilden wilden)
(loop :with (first . rest) = x
:with path = (resolve-absolute-location
first :ensure-directory (and (or ensure-directory rest) t)
:wilden (and wilden (null rest)))
:for (element . morep) :on rest
:for dir = (and (or morep ensure-directory) t)
:for wild = (and wilden (not morep))
:do (setf path (merge-pathnames*
(resolve-relative-location
element :ensure-directory dir :wilden wild)
path))
:finally (return path))))
(defun* location-designator-p (x)
(flet ((absolute-component-p (c)
(typep c '(or string pathname
(member :root :home :here :user-cache))))
(relative-component-p (c)
(typep c '(or string pathname
(member :*/ :**/ :*.*.* :implementation :implementation-type)))))
(or (typep x 'boolean)
(absolute-component-p x)
(and (consp x) (absolute-component-p (first x)) (every #'relative-component-p (rest x))))))
(defun* location-function-p (x)
(and
(length=n-p x 2)
(eq (car x) :function)
(or (symbolp (cadr x))
(and (consp (cadr x))
(eq (caadr x) 'lambda)
(length=n-p (cadadr x) 2)))))
(defvar *clear-configuration-hook* '())
(defun* register-clear-configuration-hook (hook-function &optional call-now-p)
(register-hook-function '*clear-configuration-hook* hook-function call-now-p))
(defun* clear-configuration ()
(call-functions *clear-configuration-hook*))
Francois-Rene Rideau
committed
(register-image-dump-hook 'clear-configuration)