;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Mar 2002
;;;;
-;;;; $Id$
-;;;;
-;;;; This file, part of CLSQL, is Copyright (c) 2002-2004 by Kevin M. Rosenberg
+;;;; This file, part of CLSQL, is Copyright (c) 2002-2010 by Kevin M. Rosenberg
;;;;
;;;; CLSQL users are granted the rights to distribute and use this software
;;;; as governed by the terms of the Lisp Lesser GNU Public License
(in-package #:clsql-sys)
+(defmacro defaulting (&rest place-value-plist)
+ "for places and values (as an &rest plist)
+ if place-n is null set it to value-n"
+ `(progn
+ ,@(loop for (place value . rest) on place-value-plist by #'cddr
+ collect `(unless ,place (setf ,place ,value)))))
+
+(defmacro pop-n (place &optional (n 1))
+ "pops n items off of a list in place and returns their values in a new list
+
+ if n > the length of the list in place, then we return the full list,
+ setting the place to nil"
+ `(loop repeat ,n
+ while ,place
+ collect (pop ,place)))
+
+(defun %get-int (v)
+ (etypecase v
+ (string (parse-integer v :junk-allowed t))
+ (integer v)
+ (number (truncate v))))
+
+(defun dequote (it)
+ (if (and (listp it) (eql (first it) 'quote))
+ (second it)
+ it))
+
+(defvar +whitespace-chars+
+ '(#\space #\tab #\newline #\return
+ ;; Tested: sbcl unicode, allegrocl, openmcl,clisp use #\no-break_space
+ ;; lispworks uses #\no-break-space
+ ;; sbcl non-unicode doesn't support no break space
+ ;; AllegroCL 8-bit strings don't fail on reading #\no-break_space,
+ ;; but can't represent such a character
+ ;; CMUCL errors when trying to read #\no-break_space
+ #+(and lispworks unicode) #\no-break-space
+ #+(or (and sbcl sb-unicode) (and allegro ics) (and clisp i18n)
+ (and openmcl openmcl-unicode-strings))
+ #\no-break_space
+ )
+ "List of whitespace characters for this lisp implementation.")
+
(defun number-to-sql-string (num)
(etypecase num
(integer
- num)
+ (princ-to-string num))
(rational
(float-to-sql-string (coerce num 'double-float)))
(number
(defun float-to-sql-string (num)
"Convert exponent character for SQL"
(let ((str (write-to-string num :readably t)))
+ (declare (type string str))
(cond
((find #\f str)
(substitute #\e #\f str))
(defun sql-escape (identifier)
"Change hyphens to underscores, ensure string"
- (let* ((unescaped (etypecase identifier
- (symbol (symbol-name identifier))
- (string identifier)))
- (escaped (make-string (length unescaped))))
- (dotimes (i (length unescaped))
- (setf (char escaped i)
- (cond ((equal (char unescaped i) #\-)
- #\_)
- ;; ...
- (t
- (char unescaped i)))))
- escaped))
+ (let ((unescaped (etypecase identifier
+ (symbol (symbol-name identifier))
+ (string identifier))))
+ (substitute #\_ #\- unescaped)))
+
+#+lispworks
+(defvar +lw-has-without-preemption+
+ #-(or lispworks5 lispworks4) nil
+ #+(or lispworks5 lispworks4) t)
+#+lispworks
+(defvar +lw-global-lock+
+ (unless +lw-has-without-preemption+
+ (mp:make-lock :name "CLSQL" :important-p nil :safep t :recursivep nil
+ :sharing t)))
(defmacro without-interrupts (&body body)
- #+lispworks `(mp:without-preemption ,@body)
#+allegro `(mp:without-scheduling ,@body)
+ #+clisp `(progn ,@body)
#+cmu `(system:without-interrupts ,@body)
- #+sbcl `(sb-sys::without-interrupts ,@body)
- #+openmcl `(ccl:without-interrupts ,@body))
-
-(defun make-process-lock (name)
+ #+lispworks
+ (if +lw-has-without-preemption+
+ `(mp:without-preemption ,@body)
+ `(mp:with-exclusive-lock (+lw-global-lock+)
+ ,@body))
+ #+openmcl `(ccl:without-interrupts ,@body)
+ #+sbcl `(sb-sys::without-interrupts ,@body))
+
+(defun make-process-lock (name)
#+allegro (mp:make-process-lock :name name)
#+cmu (mp:make-lock name)
#+lispworks (mp:make-lock :name name)
#+sb-thread (sb-thread:with-recursive-lock (,l) ,@body)
))
#+scl `(thread:with-lock-held (,lock ,desc) ,@body)
- #-(or cmu allegro lispworks openmcl sb-thread scl) (declare
- (ignore lock desc))
+ #-(or cmu allegro lispworks openmcl sb-thread scl) (declare
+ (ignore lock desc))
#-(or cmu allegro lispworks openmcl sb-thread scl) `(progn ,@body))
(defun sql-escape-quotes (s)
"Escape quotes for SQL string writing"
(substitute-string-for-char s #\' "''"))
-(defun substitute-string-for-char (procstr match-char subst-str)
-"Substitutes a string for a single matching character of a string"
- (let ((pos (position match-char procstr)))
- (if pos
- (concatenate 'string
- (subseq procstr 0 pos) subst-str
- (substitute-string-for-char
- (subseq procstr (1+ pos)) match-char subst-str))
- procstr)))
+(defun substitute-string-for-char (procstr match-char subst-str)
+ "Substitutes a string for a single matching character of a string"
+ (when procstr
+ (locally
+ (declare (type string procstr))
+ (let ((pos (position match-char procstr)))
+ (if pos
+ (concatenate 'string
+ (subseq procstr 0 pos) subst-str
+ (substitute-string-for-char
+ (subseq procstr (1+ pos)) match-char subst-str))
+ procstr)))))
(defun position-char (char string start max)
"From KMRCL."
(declare (optimize (speed 3) (safety 0) (space 0))
- (fixnum start max) (simple-string string))
+ (fixnum start max) (simple-string string))
(do* ((i start (1+ i)))
((= i max) nil)
(declare (fixnum i))
(when (char= char (schar string i)) (return i))))
-(defun delimited-string-to-list (string &optional (separator #\space)
- skip-terminal)
+(defun delimited-string-to-list (string &optional (separator #\space)
+ skip-terminal)
"Split a string with delimiter, from KMRCL."
(declare (optimize (speed 3) (safety 0) (space 0) (compilation-speed 0))
- (type string string)
- (type character separator))
+ (type string string)
+ (type character separator))
(do* ((len (length string))
- (output '())
- (pos 0)
- (end (position-char separator string pos len)
- (position-char separator string pos len)))
+ (output '())
+ (pos 0)
+ (end (position-char separator string pos len)
+ (position-char separator string pos len)))
((null end)
- (if (< pos len)
- (push (subseq string pos) output)
- (when (or (not skip-terminal) (zerop len))
- (push "" output)))
- (nreverse output))
+ (if (< pos len)
+ (push (subseq string pos) output)
+ (when (or (not skip-terminal) (zerop len))
+ (push "" output)))
+ (nreverse output))
(declare (type fixnum pos len)
- (type (or null fixnum) end))
+ (type (or null fixnum) end))
(push (subseq string pos end) output)
(setq pos (1+ end))))
(defun string-to-list-connection-spec (str)
+ (declare (type string str))
(let ((at-pos (position-char #\@ str 0 (length str))))
(cond
((and at-pos (> (length str) at-pos))
;; Connection spec is SQL*NET format
(cons (subseq str (1+ at-pos))
- (delimited-string-to-list (subseq str 0 at-pos) #\/)))
+ (delimited-string-to-list (subseq str 0 at-pos) #\/)))
(t
(delimited-string-to-list str #\/)))))
(multiple-value-bind (output error status)
(apply #'%command-output control-string args)
(values
- (concatenate 'string (if output output "")
- (if error error ""))
+ (concatenate 'string (if output output "")
+ (if error error ""))
status)))
(defun read-stream-to-string (in)
(with-output-to-string (out)
- (let ((eof (gensym)))
- (do ((line (read-line in nil eof)
- (read-line in nil eof)))
- ((eq line eof))
- (format out "~A~%" line)))))
-
+ (let ((eof (gensym)))
+ (do ((line (read-line in nil eof)
+ (read-line in nil eof)))
+ ((eq line eof))
+ (format out "~A~%" line)))))
+
;; From KMRCL
(defun %command-output (control-string &rest args)
"Interpolate ARGS into CONTROL-STRING as if by FORMAT, and
-synchronously execute the result using a Bourne-compatible shell,
+synchronously execute the result using a Bourne-compatible shell,
returns (VALUES string-output error-output exit-status)"
(let ((command (apply #'format nil control-string args)))
#+sbcl
- (let* ((process (sb-ext:run-program
- "/bin/sh"
- (list "-c" command)
- :input nil :output :stream :error :stream))
- (output (read-stream-to-string (sb-impl::process-output process)))
- (error (read-stream-to-string (sb-impl::process-error process))))
+ (let* ((process (sb-ext:run-program
+ "/bin/sh"
+ (list "-c" command)
+ :input nil :output :stream :error :stream))
+ (output (read-stream-to-string (sb-impl::process-output process)))
+ (error (read-stream-to-string (sb-impl::process-error process))))
(close (sb-impl::process-output process))
(close (sb-impl::process-error process))
(values
output
error
- (sb-impl::process-exit-code process)))
+ (sb-impl::process-exit-code process)))
+
-
#+(or cmu scl)
- (let* ((process (ext:run-program
- "/bin/sh"
- (list "-c" command)
- :input nil :output :stream :error :stream))
- (output (read-stream-to-string (ext::process-output process)))
- (error (read-stream-to-string (ext::process-error process))))
+ (let* ((process (ext:run-program
+ "/bin/sh"
+ (list "-c" command)
+ :input nil :output :stream :error :stream))
+ (output (read-stream-to-string (ext::process-output process)))
+ (error (read-stream-to-string (ext::process-error process))))
(close (ext::process-output process))
(close (ext::process-error process))
(values
output
error
- (ext::process-exit-code process)))
+ (ext::process-exit-code process)))
#+allegro
(multiple-value-bind (output error status)
- (excl.osi:command-output command :whole t)
+ (excl.osi:command-output command :whole t)
(values output error status))
-
+
#+lispworks
;; BUG: Lispworks combines output and error streams
(let ((output (make-string-output-stream)))
(unwind-protect
- (let ((status
- (system:call-system-showing-output
- command
- :shell-type "/bin/sh"
- :output-stream output)))
- (values (get-output-stream-string output) nil status))
- (close output)))
-
- #+clisp
+ (let ((status
+ (system:call-system-showing-output
+ command
+ :shell-type "/bin/sh"
+ :output-stream output)))
+ (values (get-output-stream-string output) nil status))
+ (close output)))
+
+ #+clisp
;; BUG: CLisp doesn't allow output to user-specified stream
(values
nil
nil
(ext:run-shell-command command :output :terminal :wait t))
-
+
#+openmcl
- (let* ((process (ccl:run-program
- "/bin/sh"
- (list "-c" command)
- :input nil :output :stream :error :stream
- :wait t))
- (output (read-stream-to-string (ccl::external-process-output-stream process)))
- (error (read-stream-to-string (ccl::external-process-error-stream process))))
+ (let* ((process (ccl:run-program
+ "/bin/sh"
+ (list "-c" command)
+ :input nil :output :stream :error :stream
+ :wait t))
+ (output (read-stream-to-string (ccl::external-process-output-stream process)))
+ (error (read-stream-to-string (ccl::external-process-error-stream process))))
(close (ccl::external-process-output-stream process))
(close (ccl::external-process-error-stream process))
(values output
- error
- (nth-value 1 (ccl::external-process-status process))))
-
+ error
+ (nth-value 1 (ccl::external-process-status process))))
+
#-(or openmcl clisp lispworks allegro scl cmu sbcl)
(error "COMMAND-OUTPUT not implemented for this Lisp")
choices)))))
;; From KMRCL
-(defun substitute-char-string (procstr match-char subst-str)
+(defun substitute-char-string (procstr match-char subst-str)
"Substitutes a string for a single matching character of a string"
(substitute-chars-strings procstr (list (cons match-char subst-str))))
(defun replaced-string-length (str repl-alist)
(declare (simple-string str)
- (optimize (speed 3) (safety 0) (space 0)))
+ (optimize (speed 3) (safety 0) (space 0)))
(do* ((i 0 (1+ i))
- (orig-len (length str))
- (new-len orig-len))
- ((= i orig-len) new-len)
+ (orig-len (length str))
+ (new-len orig-len))
+ ((= i orig-len) new-len)
(declare (fixnum i orig-len new-len))
(let* ((c (char str i))
- (match (assoc c repl-alist :test #'char=)))
- (declare (character c))
- (when match
- (incf new-len (1- (length
- (the simple-string (cdr match)))))))))
+ (match (assoc c repl-alist :test #'char=)))
+ (declare (character c))
+ (when match
+ (incf new-len (1- (length
+ (the simple-string (cdr match)))))))))
(defun substitute-chars-strings (str repl-alist)
"Replace all instances of a chars with a string. repl-alist is an assoc
list of characters and replacement strings."
(declare (simple-string str)
- (optimize (speed 3) (safety 0) (space 0)))
+ (optimize (speed 3) (safety 0) (space 0)))
(do* ((orig-len (length str))
- (new-string (make-string (replaced-string-length str repl-alist)))
- (spos 0 (1+ spos))
- (dpos 0))
+ (new-string (make-string (replaced-string-length str repl-alist)))
+ (spos 0 (1+ spos))
+ (dpos 0))
((>= spos orig-len)
new-string)
(declare (fixnum spos dpos) (simple-string new-string))
(let* ((c (char str spos))
- (match (assoc c repl-alist :test #'char=)))
+ (match (assoc c repl-alist :test #'char=)))
(declare (character c))
(if match
- (let* ((subst (cdr match))
- (len (length subst)))
- (declare (fixnum len)
- (simple-string subst))
- (dotimes (j len)
- (declare (fixnum j))
- (setf (char new-string dpos) (char subst j))
- (incf dpos)))
- (progn
- (setf (char new-string dpos) c)
- (incf dpos))))))
-
+ (let* ((subst (cdr match))
+ (len (length subst)))
+ (declare (fixnum len)
+ (simple-string subst))
+ (dotimes (j len)
+ (declare (fixnum j))
+ (setf (char new-string dpos) (char subst j))
+ (incf dpos)))
+ (progn
+ (setf (char new-string dpos) c)
+ (incf dpos))))))
+
+
+(defun getenv (var)
+ "Return the value of the environment variable."
+ #+allegro (sys::getenv (string var))
+ #+clisp (ext:getenv (string var))
+ #+(or cmu scl)
+ (cdr (assoc (string var) ext:*environment-list* :test #'equalp
+ :key #'string))
+ #+lispworks (lw:environment-variable (string var))
+ #+ccl (ccl::getenv var)
+ #+sbcl (sb-ext:posix-getenv var))
(eval-when (:compile-toplevel :load-toplevel :execute)
(when (char= #\a (schar (symbol-name '#:a) 0))
(defun convert-to-db-default-case (str database)
(if database
(case (db-type-default-case (database-underlying-type database))
- (:upper (string-upcase str))
- (:lower (string-downcase str))
- (t str))
+ (:upper (string-upcase str))
+ (:lower (string-downcase str))
+ (t str))
;; Default CommonSQL behavior is to upcase strings
(string-upcase str)))
-
(defun ensure-keyword (name)
- "Returns keyword for a name"
+ "Returns keyword for a name."
(etypecase name
(keyword name)
(string (nth-value 0 (intern (symbol-name-default-case name) :keyword)))
(eval-when (:compile-toplevel :load-toplevel :execute)
(setq cl:*features* (delete :clsql-lowercase-reader cl:*features*)))
+
+(defun replace-all (string part replacement &key (test #'char=) stream)
+ "Returns a new string in which all the occurences of the part
+is replaced with replacement. [FROM http://cl-cookbook.sourceforge.net/strings.html#manip]"
+ (let ((out (or stream (make-string-output-stream))))
+ (loop with part-length = (length part)
+ for old-pos = 0 then (+ pos part-length)
+ for pos = (search part string
+ :start2 old-pos
+ :test test)
+ do (write-string string out
+ :start old-pos
+ :end (or pos (length string)))
+ when pos do (write-string replacement out)
+ while pos)
+ (unless stream
+ (get-output-stream-string out))))
+
+(defun read-decimal-value (string)
+ (let* ((comma 0)
+ (dot 0)
+ (last))
+ (loop for c across string
+ do (case c
+ (#\. (incf dot) (setf last 'dot))
+ (#\, (incf comma) (setf last 'comma))))
+ (let* ((bag (if (and (eql last 'dot) (eql dot 1))
+ ".0123456789+-"
+ ",0123456789+-"))
+ (clean (with-output-to-string (out)
+ (loop for c across string
+ do (when (find c bag :test #'char=)
+ (write-char c out))))))
+ (if (and (eql last 'dot) (eql dot 1))
+ (decimals:parse-decimal-number clean)
+ (decimals:parse-decimal-number
+ clean :decimal-separator #\,)))))
+
+
+(defun filter-plist (plist &rest keys-to-remove)
+ "Returns a copy of the given plist with indicated key-value pairs
+removed. keys are searched with #'MEMBER"
+ (declare (dynamic-extent keys-to-remove))
+ (when plist
+ (loop for (k v . rest) = plist then rest
+ unless (member k keys-to-remove)
+ collect k and collect v
+ while rest)))
+
+(defmacro make-weak-hash-table (&rest args)
+ "Creates a weak hash table for use in a cache."
+ `(progn
+
+ ;;NB: These are generally used for caches that may not have an alternate
+ ;;clearing mechanism. If you are on an implementation that doesn't support
+ ;;weak hash tables then you're memory may accumulate.
+
+ #-(or sbcl allegro clisp lispworks ccl)
+ (warn "UNSAFE! use of weak hash on implementation without support. (see clsql/sql/utils.lisp to add)")
+
+ (make-hash-table
+ #+allegro :values #+allegro :weak
+ #+clisp :weak #+clisp :value
+ #+lispworks :weak-kind #+lispworks :value
+ #+sbcl :weakness #+sbcl :value
+ #+ccl :weak #+ccl :value
+ ,@args)
+ ))
+
+(defun to-slot-name (slot)
+ "try to turn what we got representing the slot into a slot name"
+ (etypecase slot
+ (symbol slot)
+ (slot-definition (slot-definition-name slot))))
+
+(defun to-class (it)
+ (etypecase it
+ (class it)
+ (symbol (find-class it))
+ (standard-object (class-of it))))
+
+(defun to-class-name (o)
+ (etypecase o
+ (symbol o)
+ (standard-class (class-name o))
+ (standard-object (class-name (class-of o)))))
+
+(defun easy-slot-value (obj slot)
+ "like slot-value except it accepts slot-names or defs
+ and returns nil when the slot is unbound"
+ (let ((n (to-slot-name slot)))
+ (when (and obj (slot-boundp obj n))
+ (slot-value obj n))))
+
+(defun (setf easy-slot-value) (new obj slot)
+ "like slot-value except it accepts slot-names or defs"
+ (setf (slot-value obj (to-slot-name slot)) new))
+
+(defun delist-if-single (x)
+ "if this is a single item in a list return it"
+ (if (and (listp x) (= 1 (length x)))
+ (first x)
+ x))
projects / clsql.git / blobdiff