;;; We compile some trivial character operations via inline expansion.
#!-sb-fluid
(declaim (inline standard-char-p graphic-char-p alpha-char-p
- upper-case-p lower-case-p both-case-p alphanumericp
- char-int))
+ upper-case-p lower-case-p both-case-p alphanumericp
+ char-int))
(declaim (maybe-inline digit-char-p digit-weight))
(deftype char-code ()
`(integer 0 (,char-code-limit)))
-(macrolet ((frob (char-names-list)
- (collect ((results))
- (dolist (code char-names-list)
- (destructuring-bind (ccode names) code
- (dolist (name names)
- (results (cons name (code-char ccode))))))
- `(defparameter *char-name-alist* ',(results)
- #!+sb-doc
- "This is the alist of (character-name . character) for characters with
- long names. The first name in this list for a given character is used
- on typeout and is the preferred form for input."))))
- (frob ((#x00 ("Null" "^@" "Nul"))
- (#x01 ("^a" "Soh"))
- (#x02 ("^b" "Stx"))
- (#x03 ("^c" "Etx"))
- (#x04 ("^d" "Eot"))
- (#x05 ("^e" "Enq"))
- (#x06 ("^f" "Ack"))
- (#x07 ("Bell" "^g" "Bel"))
- (#x08 ("Backspace" "^h" "Bs"))
- (#x09 ("Tab" "^i" "Ht"))
- (#x0A ("Newline" "Linefeed" "^j" "Lf" "Nl" ))
- (#x0B ("Vt" "^k"))
- (#x0C ("Page" "^l" "Form" "Formfeed" "Ff" "Np"))
- (#x0D ("Return" "^m" "Cr"))
- (#x0E ("^n" "So"))
- (#x0F ("^o" "Si"))
- (#x10 ("^p" "Dle"))
- (#x11 ("^q" "Dc1"))
- (#x12 ("^r" "Dc2"))
- (#x13 ("^s" "Dc3"))
- (#x14 ("^t" "Dc4"))
- (#x15 ("^u" "Nak"))
- (#x16 ("^v" "Syn"))
- (#x17 ("^w" "Etb"))
- (#x18 ("^x" "Can"))
- (#x19 ("^y" "Em"))
- (#x1A ("^z" "Sub"))
- (#x1B ("Escape" "^[" "Altmode" "Esc" "Alt"))
- (#x1C ("^\\" "Fs"))
- (#x1D ("^]" "Gs"))
- (#x1E ("^^" "Rs"))
- (#x1F ("^_" "Us"))
- (#x20 ("Space" "Sp"))
- (#x7f ("Rubout" "Delete" "Del")))))
+(defvar *character-database*)
+(declaim (type (simple-array (unsigned-byte 8) (*)) *character-database*))
+
+#!+sb-unicode
+(progn
+ (defvar *unicode-character-name-database*)
+ (defvar *unicode-character-name-huffman-tree*))
+
+(macrolet ((frob ()
+ (flet ((file (name type)
+ (merge-pathnames (make-pathname
+ :directory
+ '(:relative :up :up "output")
+ :name name :type type)
+ sb!xc:*compile-file-truename*)))
+ `(progn
+ ,(with-open-file (stream (file "ucd" "dat")
+ :direction :input
+ :element-type '(unsigned-byte 8))
+ (let* ((length (file-length stream))
+ (array (make-array
+ length :element-type '(unsigned-byte 8))))
+ (read-sequence array stream)
+ `(defun !character-database-cold-init ()
+ (setq *character-database* ',array))))
+ ,(with-open-file (stream (file "ucd-names" "lisp-expr")
+ :direction :input
+ :element-type 'character)
+ (let ((names (make-hash-table)))
+ #!+sb-unicode
+ (loop
+ for code-point = (read stream nil nil)
+ for char-name = (string-upcase (read stream nil nil))
+ while code-point
+ do (setf (gethash code-point names) char-name))
+ (let ((tree
+ #!+sb-unicode
+ (make-huffman-tree
+ (let (list)
+ (maphash (lambda (code name)
+ (declare (ignore code))
+ (push name list))
+ names)
+ list)))
+ (code->name
+ (make-array (hash-table-count names)
+ :fill-pointer 0))
+ (name->code nil))
+ (maphash (lambda (code name)
+ (vector-push
+ (cons code (huffman-encode name tree))
+ code->name))
+ names)
+ (setf name->code
+ (sort (copy-seq code->name) #'< :key #'cdr))
+ (setf code->name
+ (sort (copy-seq name->code) #'< :key #'car))
+ (setf names nil)
+ `(defun !character-name-database-cold-init ()
+ #!+sb-unicode
+ (setq *unicode-character-name-database*
+ (cons ',code->name ',name->code)
+ *unicode-character-name-huffman-tree* ',tree)))))))))
+ (frob))
+#+sb-xc-host (!character-database-cold-init)
+#+sb-xc-host (!character-name-database-cold-init)
+
+(defparameter *base-char-name-alist*
+ ;; Note: The *** markers here indicate character names which are
+ ;; required by the ANSI specification of #'CHAR-NAME. For the others,
+ ;; we prefer the ASCII standard name.
+ '((#x00 "Nul" "Null" "^@")
+ (#x01 "Soh" "^a")
+ (#x02 "Stx" "^b")
+ (#x03 "Etx" "^c")
+ (#x04 "Eot" "^d")
+ (#x05 "Enq" "^e")
+ (#x06 "Ack" "^f")
+ (#x07 "Bel" "Bell" "^g")
+ (#x08 "Backspace" "^h" "Bs") ; *** See Note above
+ (#x09 "Tab" "^i" "Ht") ; *** See Note above
+ (#x0A "Newline" "Linefeed" "^j" "Lf" "Nl") ; *** See Note above
+ (#x0B "Vt" "^k")
+ (#x0C "Page" "^l" "Form" "Formfeed" "Ff" "Np") ; *** See Note above
+ (#x0D "Return" "^m" "Cr") ; *** See Note above
+ (#x0E "So" "^n")
+ (#x0F "Si" "^o")
+ (#x10 "Dle" "^p")
+ (#x11 "Dc1" "^q")
+ (#x12 "Dc2" "^r")
+ (#x13 "Dc3" "^s")
+ (#x14 "Dc4" "^t")
+ (#x15 "Nak" "^u")
+ (#x16 "Syn" "^v")
+ (#x17 "Etb" "^w")
+ (#x18 "Can" "^x")
+ (#x19 "Em" "^y")
+ (#x1A "Sub" "^z")
+ (#x1B "Esc" "Escape" "^[" "Altmode" "Alt")
+ (#x1C "Fs" "^\\")
+ (#x1D "Gs" "^]")
+ (#x1E "Rs" "^^")
+ (#x1F "Us" "^_")
+ (#x20 "Space" "Sp") ; *** See Note above
+ (#x7f "Rubout" "Delete" "Del")
+ (#x80 "C80")
+ (#x81 "C81")
+ (#x82 "Break-Permitted")
+ (#x83 "No-Break-Permitted")
+ (#x84 "C84")
+ (#x85 "Next-Line")
+ (#x86 "Start-Selected-Area")
+ (#x87 "End-Selected-Area")
+ (#x88 "Character-Tabulation-Set")
+ (#x89 "Character-Tabulation-With-Justification")
+ (#x8A "Line-Tabulation-Set")
+ (#x8B "Partial-Line-Forward")
+ (#x8C "Partial-Line-Backward")
+ (#x8D "Reverse-Linefeed")
+ (#x8E "Single-Shift-Two")
+ (#x8F "Single-Shift-Three")
+ (#x90 "Device-Control-String")
+ (#x91 "Private-Use-One")
+ (#x92 "Private-Use-Two")
+ (#x93 "Set-Transmit-State")
+ (#x94 "Cancel-Character")
+ (#x95 "Message-Waiting")
+ (#x96 "Start-Guarded-Area")
+ (#x97 "End-Guarded-Area")
+ (#x98 "Start-String")
+ (#x99 "C99")
+ (#x9A "Single-Character-Introducer")
+ (#x9B "Control-Sequence-Introducer")
+ (#x9C "String-Terminator")
+ (#x9D "Operating-System-Command")
+ (#x9E "Privacy-Message")
+ (#x9F "Application-Program-Command"))) ; *** See Note above
\f
;;;; accessor functions
+;; (* 8 186) => 1488
+;; (+ 1488 (ash #x110000 -8)) => 5840
+(defun ucd-index (char)
+ (let* ((cp (char-code char))
+ (cp-high (ash cp -8))
+ (page (aref *character-database* (+ 1488 cp-high))))
+ (+ 5840 (ash page 10) (ash (ldb (byte 8 0) cp) 2))))
+
+(defun ucd-value-0 (char)
+ (aref *character-database* (ucd-index char)))
+
+(defun ucd-value-1 (char)
+ (let ((index (ucd-index char)))
+ (dpb (aref *character-database* (+ index 3))
+ (byte 8 16)
+ (dpb (aref *character-database* (+ index 2))
+ (byte 8 8)
+ (aref *character-database* (1+ index))))))
+
+(defun ucd-general-category (char)
+ (aref *character-database* (* 8 (ucd-value-0 char))))
+
+(defun ucd-decimal-digit (char)
+ (let ((decimal-digit (aref *character-database*
+ (+ 3 (* 8 (ucd-value-0 char))))))
+ (when (< decimal-digit 10)
+ decimal-digit)))
+
(defun char-code (char)
#!+sb-doc
- "Returns the integer code of CHAR."
+ "Return the integer code of CHAR."
+ ;; FIXME: do we actually need this?
(etypecase char
- (base-char (char-code (truly-the base-char char)))))
+ (character (char-code (truly-the character char)))))
(defun char-int (char)
#!+sb-doc
- "Returns the integer code of CHAR. This is the same as char-code, as
- CMU Common Lisp does not implement character bits or fonts."
+ "Return the integer code of CHAR. (In SBCL this is the same as CHAR-CODE, as
+ there are no character bits or fonts.)"
(char-code char))
(defun code-char (code)
#!+sb-doc
- "Returns the character with the code CODE."
- (declare (type char-code code))
+ "Return the character with the code CODE."
(code-char code))
(defun character (object)
#!+sb-doc
- "Coerces its argument into a character object if possible. Accepts
+ "Coerce OBJECT into a CHARACTER if possible. Legal inputs are
characters, strings and symbols of length 1."
(flet ((do-error (control args)
- (error 'simple-type-error
- :datum object
- ;;?? how to express "symbol with name of length 1"?
- :expected-type '(or character (string 1))
- :format-control control
- :format-arguments args)))
+ (error 'simple-type-error
+ :datum object
+ ;;?? how to express "symbol with name of length 1"?
+ :expected-type '(or character (string 1))
+ :format-control control
+ :format-arguments args)))
(typecase object
(character object)
(string (if (= 1 (length (the string object)))
- (char object 0)
- (do-error
- "String is not of length one: ~S" (list object))))
+ (char object 0)
+ (do-error
+ "String is not of length one: ~S" (list object))))
(symbol (if (= 1 (length (symbol-name object)))
- (schar (symbol-name object) 0)
- (do-error
- "Symbol name is not of length one: ~S" (list object))))
+ (schar (symbol-name object) 0)
+ (do-error
+ "Symbol name is not of length one: ~S" (list object))))
(t (do-error "~S cannot be coerced to a character." (list object))))))
(defun char-name (char)
#!+sb-doc
- "Given a character object, char-name returns the name for that
- object (a symbol)."
- (car (rassoc char *char-name-alist*)))
+ "Return the name (a STRING) for a CHARACTER object."
+ (let ((char-code (char-code char)))
+ (or (second (assoc char-code *base-char-name-alist*))
+ #!+sb-unicode
+ (let ((h-code (cdr (binary-search char-code
+ (car *unicode-character-name-database*)
+ :key #'car))))
+ (when h-code
+ (huffman-decode h-code *unicode-character-name-huffman-tree*))))))
(defun name-char (name)
#!+sb-doc
- "Given an argument acceptable to string, name-char returns a character
- object whose name is that symbol, if one exists. Otherwise, () is returned."
- (cdr (assoc (string name) *char-name-alist* :test #'string-equal)))
+ "Given an argument acceptable to STRING, NAME-CHAR returns a character
+ whose name is that string, if one exists. Otherwise, NIL is returned."
+ (or (let ((char-code (car (rassoc-if (lambda (names)
+ (member name names :test #'string-equal))
+ *base-char-name-alist*))))
+ (when char-code
+ (code-char char-code)))
+ #!+sb-unicode
+ (let ((encoding (huffman-encode (string-upcase name)
+ *unicode-character-name-huffman-tree*)))
+ (when encoding
+ (let ((char-code
+ (car (binary-search encoding
+ (cdr *unicode-character-name-database*)
+ :key #'cdr))))
+ (when char-code
+ (code-char char-code)))))))
\f
;;;; predicates
(defun standard-char-p (char)
#!+sb-doc
- "The argument must be a character object. Standard-char-p returns T if the
+ "The argument must be a character object. STANDARD-CHAR-P returns T if the
argument is a standard character -- one of the 95 ASCII printing characters
or <return>."
- (declare (character char))
(and (typep char 'base-char)
(let ((n (char-code (the base-char char))))
- (or (< 31 n 127)
- (= n 10)))))
+ (or (< 31 n 127)
+ (= n 10)))))
(defun %standard-char-p (thing)
#!+sb-doc
"Return T if and only if THING is a standard-char. Differs from
- standard-char-p in that THING doesn't have to be a character."
+ STANDARD-CHAR-P in that THING doesn't have to be a character."
(and (characterp thing) (standard-char-p thing)))
(defun graphic-char-p (char)
#!+sb-doc
- "The argument must be a character object. Graphic-char-p returns T if the
+ "The argument must be a character object. GRAPHIC-CHAR-P returns T if the
argument is a printing character (space through ~ in ASCII), otherwise
- returns ()."
- (declare (character char))
- (and (typep char 'base-char)
- (< 31
- (char-code (the base-char char))
- 127)))
+ returns NIL."
+ (let ((n (char-code char)))
+ (or (< 31 n 127)
+ (< 159 n))))
(defun alpha-char-p (char)
#!+sb-doc
- "The argument must be a character object. Alpha-char-p returns T if the
- argument is an alphabetic character, A-Z or a-z; otherwise ()."
- (declare (character char))
- (let ((m (char-code char)))
- (or (< 64 m 91) (< 96 m 123))))
+ "The argument must be a character object. ALPHA-CHAR-P returns T if the
+ argument is an alphabetic character, A-Z or a-z; otherwise NIL."
+ (< (ucd-general-category char) 5))
(defun upper-case-p (char)
#!+sb-doc
- "The argument must be a character object; upper-case-p returns T if the
- argument is an upper-case character, () otherwise."
- (declare (character char))
- (< 64
- (char-code char)
- 91))
+ "The argument must be a character object; UPPER-CASE-P returns T if the
+ argument is an upper-case character, NIL otherwise."
+ (= (ucd-value-0 char) 0))
(defun lower-case-p (char)
#!+sb-doc
- "The argument must be a character object; lower-case-p returns T if the
- argument is a lower-case character, () otherwise."
- (declare (character char))
- (< 96
- (char-code char)
- 123))
+ "The argument must be a character object; LOWER-CASE-P returns T if the
+ argument is a lower-case character, NIL otherwise."
+ (= (ucd-value-0 char) 1))
(defun both-case-p (char)
#!+sb-doc
- "The argument must be a character object. Both-case-p returns T if the
+ "The argument must be a character object. BOTH-CASE-P returns T if the
argument is an alphabetic character and if the character exists in
- both upper and lower case. For ASCII, this is the same as Alpha-char-p."
- (declare (character char))
- (let ((m (char-code char)))
- (or (< 64 m 91) (< 96 m 123))))
+ both upper and lower case. For ASCII, this is the same as ALPHA-CHAR-P."
+ (< (ucd-value-0 char) 2))
(defun digit-char-p (char &optional (radix 10.))
#!+sb-doc
"If char is a digit in the specified radix, returns the fixnum for
- which that digit stands, else returns NIL. Radix defaults to 10
- (decimal)."
- (declare (character char) (type (integer 2 36) radix))
+ which that digit stands, else returns NIL."
(let ((m (- (char-code char) 48)))
(declare (fixnum m))
(cond ((<= radix 10.)
- ;; Special-case decimal and smaller radices.
- (if (and (>= m 0) (< m radix)) m nil))
- ;; Digits 0 - 9 are used as is, since radix is larger.
- ((and (>= m 0) (< m 10)) m)
- ;; Check for upper case A - Z.
- ((and (>= (setq m (- m 7)) 10) (< m radix)) m)
- ;; Also check lower case a - z.
- ((and (>= (setq m (- m 32)) 10) (< m radix)) m)
- ;; Else, fail.
- (t nil))))
-
-(defun whitespace-char-p (x)
- (and (characterp x)
- (or (char= x #\space)
- (char= x (code-char tab-char-code))
- (char= x (code-char return-char-code))
- (char= x #\linefeed))))
+ ;; Special-case decimal and smaller radices.
+ (if (and (>= m 0) (< m radix)) m nil))
+ ;; Digits 0 - 9 are used as is, since radix is larger.
+ ((and (>= m 0) (< m 10)) m)
+ ;; Check for upper case A - Z.
+ ((and (>= (setq m (- m 7)) 10) (< m radix)) m)
+ ;; Also check lower case a - z.
+ ((and (>= (setq m (- m 32)) 10) (< m radix)) m)
+ ;; Else, fail.
+ (t (let ((number (ucd-decimal-digit char)))
+ (when (and number (< number radix))
+ number))))))
(defun alphanumericp (char)
#!+sb-doc
- "Given a character-object argument, alphanumericp returns T if the
+ "Given a character-object argument, ALPHANUMERICP returns T if the
argument is either numeric or alphabetic."
- (declare (character char))
- (let ((m (char-code char)))
- (or (< 47 m 58) (< 64 m 91) (< 96 m 123))))
+ (let ((gc (ucd-general-category char)))
+ (or (< gc 5)
+ (= gc 12))))
(defun char= (character &rest more-characters)
#!+sb-doc
- "Returns T if all of its arguments are the same character."
- (do ((clist more-characters (cdr clist)))
- ((atom clist) T)
- (unless (eq (car clist) character) (return nil))))
+ "Return T if all of the arguments are the same character."
+ (dolist (c more-characters t)
+ (declare (type character c))
+ (unless (eq c character) (return nil))))
(defun char/= (character &rest more-characters)
#!+sb-doc
- "Returns T if no two of its arguments are the same character."
+ "Return T if no two of the arguments are the same character."
(do* ((head character (car list))
- (list more-characters (cdr list)))
- ((atom list) T)
- (unless (do* ((l list (cdr l))) ;inner loop returns T
- ((atom l) T) ; iff head /= rest.
- (if (eq head (car l)) (return nil)))
- (return nil))))
+ (list more-characters (cdr list)))
+ ((null list) t)
+ (declare (type character head))
+ (dolist (c list)
+ (declare (type character c))
+ (when (eq head c) (return-from char/= nil)))))
(defun char< (character &rest more-characters)
#!+sb-doc
- "Returns T if its arguments are in strictly increasing alphabetic order."
+ "Return T if the arguments are in strictly increasing alphabetic order."
(do* ((c character (car list))
- (list more-characters (cdr list)))
- ((atom list) T)
+ (list more-characters (cdr list)))
+ ((null list) t)
(unless (< (char-int c)
- (char-int (car list)))
+ (char-int (car list)))
(return nil))))
(defun char> (character &rest more-characters)
#!+sb-doc
- "Returns T if its arguments are in strictly decreasing alphabetic order."
+ "Return T if the arguments are in strictly decreasing alphabetic order."
(do* ((c character (car list))
- (list more-characters (cdr list)))
- ((atom list) T)
+ (list more-characters (cdr list)))
+ ((null list) t)
(unless (> (char-int c)
- (char-int (car list)))
+ (char-int (car list)))
(return nil))))
(defun char<= (character &rest more-characters)
#!+sb-doc
- "Returns T if its arguments are in strictly non-decreasing alphabetic order."
+ "Return T if the arguments are in strictly non-decreasing alphabetic order."
(do* ((c character (car list))
- (list more-characters (cdr list)))
- ((atom list) T)
+ (list more-characters (cdr list)))
+ ((null list) t)
(unless (<= (char-int c)
- (char-int (car list)))
+ (char-int (car list)))
(return nil))))
(defun char>= (character &rest more-characters)
#!+sb-doc
- "Returns T if its arguments are in strictly non-increasing alphabetic order."
+ "Return T if the arguments are in strictly non-increasing alphabetic order."
(do* ((c character (car list))
- (list more-characters (cdr list)))
- ((atom list) T)
+ (list more-characters (cdr list)))
+ ((null list) t)
(unless (>= (char-int c)
- (char-int (car list)))
+ (char-int (car list)))
(return nil))))
-;;; Equal-Char-Code is used by the following functions as a version of char-int
+;;; EQUAL-CHAR-CODE is used by the following functions as a version of CHAR-INT
;;; which loses font, bits, and case info.
(defmacro equal-char-code (character)
- `(let ((ch (char-code ,character)))
- (if (< 96 ch 123) (- ch 32) ch)))
+ (let ((ch (gensym)))
+ `(let ((,ch ,character))
+ (if (= (ucd-value-0 ,ch) 0)
+ (ucd-value-1 ,ch)
+ (char-code ,ch)))))
(defun char-equal (character &rest more-characters)
#!+sb-doc
- "Returns T if all of its arguments are the same character.
+ "Return T if all of the arguments are the same character.
Font, bits, and case are ignored."
(do ((clist more-characters (cdr clist)))
- ((atom clist) T)
+ ((null clist) t)
(unless (= (equal-char-code (car clist))
- (equal-char-code character))
+ (equal-char-code character))
(return nil))))
(defun char-not-equal (character &rest more-characters)
#!+sb-doc
- "Returns T if no two of its arguments are the same character.
+ "Return T if no two of the arguments are the same character.
Font, bits, and case are ignored."
(do* ((head character (car list))
- (list more-characters (cdr list)))
- ((atom list) T)
+ (list more-characters (cdr list)))
+ ((null list) t)
(unless (do* ((l list (cdr l)))
- ((atom l) T)
- (if (= (equal-char-code head)
- (equal-char-code (car l)))
- (return nil)))
+ ((null l) t)
+ (if (= (equal-char-code head)
+ (equal-char-code (car l)))
+ (return nil)))
(return nil))))
(defun char-lessp (character &rest more-characters)
#!+sb-doc
- "Returns T if its arguments are in strictly increasing alphabetic order.
+ "Return T if the arguments are in strictly increasing alphabetic order.
Font, bits, and case are ignored."
(do* ((c character (car list))
- (list more-characters (cdr list)))
- ((atom list) T)
+ (list more-characters (cdr list)))
+ ((null list) t)
(unless (< (equal-char-code c)
- (equal-char-code (car list)))
+ (equal-char-code (car list)))
(return nil))))
(defun char-greaterp (character &rest more-characters)
#!+sb-doc
- "Returns T if its arguments are in strictly decreasing alphabetic order.
+ "Return T if the arguments are in strictly decreasing alphabetic order.
Font, bits, and case are ignored."
(do* ((c character (car list))
- (list more-characters (cdr list)))
- ((atom list) T)
+ (list more-characters (cdr list)))
+ ((null list) t)
(unless (> (equal-char-code c)
- (equal-char-code (car list)))
+ (equal-char-code (car list)))
(return nil))))
(defun char-not-greaterp (character &rest more-characters)
#!+sb-doc
- "Returns T if its arguments are in strictly non-decreasing alphabetic order.
+ "Return T if the arguments are in strictly non-decreasing alphabetic order.
Font, bits, and case are ignored."
(do* ((c character (car list))
- (list more-characters (cdr list)))
- ((atom list) T)
+ (list more-characters (cdr list)))
+ ((null list) t)
(unless (<= (equal-char-code c)
- (equal-char-code (car list)))
+ (equal-char-code (car list)))
(return nil))))
(defun char-not-lessp (character &rest more-characters)
#!+sb-doc
- "Returns T if its arguments are in strictly non-increasing alphabetic order.
+ "Return T if the arguments are in strictly non-increasing alphabetic order.
Font, bits, and case are ignored."
(do* ((c character (car list))
- (list more-characters (cdr list)))
- ((atom list) T)
+ (list more-characters (cdr list)))
+ ((null list) t)
(unless (>= (equal-char-code c)
- (equal-char-code (car list)))
+ (equal-char-code (car list)))
(return nil))))
\f
;;;; miscellaneous functions
(defun char-upcase (char)
#!+sb-doc
- "Returns CHAR converted to upper-case if that is possible."
- (declare (character char))
- (if (lower-case-p char)
- (code-char (- (char-code char) 32))
+ "Return CHAR converted to upper-case if that is possible. Don't convert
+ lowercase eszet (U+DF)."
+ (if (= (ucd-value-0 char) 1)
+ (code-char (ucd-value-1 char))
char))
(defun char-downcase (char)
#!+sb-doc
- "Returns CHAR converted to lower-case if that is possible."
- (declare (character char))
- (if (upper-case-p char)
- (code-char (+ (char-code char) 32))
+ "Return CHAR converted to lower-case if that is possible."
+ (if (= (ucd-value-0 char) 0)
+ (code-char (ucd-value-1 char))
char))
(defun digit-char (weight &optional (radix 10))
#!+sb-doc
"All arguments must be integers. Returns a character object that
represents a digit of the given weight in the specified radix. Returns
- NIL if no such character exists. The character will have the specified
- font attributes."
- (declare (type (integer 2 36) radix) (type unsigned-byte weight))
+ NIL if no such character exists."
(and (typep weight 'fixnum)
(>= weight 0) (< weight radix) (< weight 36)
(code-char (if (< weight 10) (+ 48 weight) (+ 55 weight)))))
projects / sbcl.git / blobdiff