r11859: Canonicalize whitespace
[cl-base64.git] / encode.lisp
index f5276a8..dcddc1a 100644 (file)
 (defun round-next-multiple (x n)
   "Round x up to the next highest multiple of n."
   (declare (fixnum n)
-          (optimize (speed 3) (safety 0) (space 0)))
+           (optimize (speed 3) (safety 0) (space 0)))
   (let ((remainder (mod x n)))
     (declare (fixnum remainder))
     (if (zerop remainder)
-       x
-       (the fixnum (+ x (the fixnum (- n remainder)))))))
+        x
+        (the fixnum (+ x (the fixnum (- n remainder)))))))
 
 (defmacro def-*-to-base64-* (input-type output-type)
   `(defun ,(intern (concatenate 'string (symbol-name input-type)
-                               (symbol-name :-to-base64-)
-                               (symbol-name output-type)))
+                                (symbol-name :-to-base64-)
+                                (symbol-name output-type)))
     (input
-       ,@(when (eq output-type :stream)
-               '(output))
-       &key (uri nil) (columns 0))
+        ,@(when (eq output-type :stream)
+                '(output))
+        &key (uri nil) (columns 0))
      "Encode a string array to base64. If columns is > 0, designates
 maximum number of columns in a line and the string will be terminated
 with a #\Newline."
      (declare ,@(case input-type
-                     (:string
-                      '((string input)))
-                     (:usb8-array
-                      '((type (array (unsigned-byte 8) (*)) input))))
-             (fixnum columns)
-             (optimize (speed 3) (safety 0) (space 0)))
+                      (:string
+                       '((string input)))
+                      (:usb8-array
+                       '((type (array (unsigned-byte 8) (*)) input))))
+              (fixnum columns)
+              (optimize (speed 3) (safety 0) (space 0)))
      (let ((pad (if uri *uri-pad-char* *pad-char*))
-          (encode-table (if uri *uri-encode-table* *encode-table*)))
+           (encode-table (if uri *uri-encode-table* *encode-table*)))
        (declare (simple-string encode-table)
-               (character pad))
+                (character pad))
        (let* ((string-length (length input))
-             (complete-group-count (truncate string-length 3))
-             (remainder (nth-value 1 (truncate string-length 3)))
-             (padded-length (* 4 (truncate (+ string-length 2) 3)))
-             ,@(when (eq output-type :string)
-                     '((num-lines (if (plusp columns)
-                                      (truncate (+ padded-length (1- columns)) columns)
-                                      0))
-                       (num-breaks (if (plusp num-lines)
-                                       (1- num-lines)
-                                       0))
-                       (strlen (+ padded-length num-breaks))
-                       (result (make-string strlen))
-                       (ioutput 0)))
-             (col (if (plusp columns)
-                      0
-                      (the fixnum (1+ padded-length)))))
-        (declare (fixnum string-length padded-length col
-                         ,@(when (eq output-type :string)
-                                 '(ioutput)))
-                 ,@(when (eq output-type :string)
-                         '((simple-string result))))
-        (labels ((output-char (ch)
-                   (if (= col columns)
-                       (progn
-                         ,@(case output-type
-                                 (:stream
-                                  '((write-char #\Newline output)))
-                                (:string
-                                 '((setf (schar result ioutput) #\Newline)
-                                   (incf ioutput))))
-                         (setq col 1))
-                    (incf col))
-                ,@(case output-type
-                        (:stream
-                         '((write-char ch output)))
-                        (:string
-                         '((setf (schar result ioutput) ch)
-                           (incf ioutput)))))
-              (output-group (svalue chars)
-                (declare (fixnum svalue chars))
-                (output-char
-                 (schar encode-table
-                        (the fixnum
-                          (logand #x3f
-                                  (the fixnum (ash svalue -18))))))
-                (output-char
-                 (schar encode-table
-                        (the fixnum
-                          (logand #x3f
-                                       (the fixnum (ash svalue -12))))))
-                (if (> chars 2)
-                    (output-char
-                     (schar encode-table
-                            (the fixnum
-                              (logand #x3f
-                                      (the fixnum (ash svalue -6))))))
-                    (output-char pad))
-                  (if (> chars 3)
-                      (output-char
-                       (schar encode-table
-                              (the fixnum
-                                (logand #x3f svalue))))
-                      (output-char pad))))
-       (do ((igroup 0 (the fixnum (1+ igroup)))
-            (isource 0 (the fixnum (+ isource 3))))
-           ((= igroup complete-group-count)
-            (cond
-              ((= remainder 2)
-               (output-group
-                (the fixnum
-                    (+
-                     (the fixnum
-                       (ash
-                        ,(case input-type
-                               (:string
-                                '(char-code (the character (char input isource))))
-                               (:usb8-array
-                                '(the fixnum (aref input isource))))
-                        16))
-                     (the fixnum
-                       (ash
-                        ,(case input-type
-                               (:string
-                                '(char-code (the character (char input
-                                                                 (the fixnum (1+ isource))))))
-                               (:usb8-array
-                                '(the fixnum (aref input (the fixnum
-                                                           (1+ isource))))))
-                        8))))
-                3))
-              ((= remainder 1)
-               (output-group
-                (the fixnum
-                  (ash
-                   ,(case input-type
-                          (:string
-                           '(char-code (the character (char input isource))))
-                          (:usb8-array
-                           '(the fixnum (aref input isource))))
-                   16))
-                2)))
-            ,(case output-type
-                   (:string
-                    'result)
-                   (:stream
-                    'output)))
-         (declare (fixnum igroup isource))
-         (output-group 
-          (the fixnum
-            (+
-             (the fixnum
-               (ash
-                (the fixnum
-                ,(case input-type
-                       (:string
-                        '(char-code (the character (char input isource))))
-                       (:usb8-array
-                        '(aref input isource))))
-                16))
-             (the fixnum
-               (ash
-                (the fixnum
-                  ,(case input-type
-                         (:string
-                          '(char-code (the character (char input
-                                                           (the fixnum (1+ isource))))))
-                       (:usb8-array
-                        '(aref input (1+ isource)))))
-                8))
-             (the fixnum
-               ,(case input-type
-                      (:string
-                       '(char-code (the character (char input
-                                                        (the fixnum (+ 2 isource))))))
-                      (:usb8-array
-                       '(aref input (+ 2 isource))))
-               )))
-          4)))))))
+              (complete-group-count (truncate string-length 3))
+              (remainder (nth-value 1 (truncate string-length 3)))
+              (padded-length (* 4 (truncate (+ string-length 2) 3)))
+              ,@(when (eq output-type :string)
+                      '((num-lines (if (plusp columns)
+                                       (truncate (+ padded-length (1- columns)) columns)
+                                       0))
+                        (num-breaks (if (plusp num-lines)
+                                        (1- num-lines)
+                                        0))
+                        (strlen (+ padded-length num-breaks))
+                        (result (make-string strlen))
+                        (ioutput 0)))
+              (col (if (plusp columns)
+                       0
+                       (the fixnum (1+ padded-length)))))
+         (declare (fixnum string-length padded-length col
+                          ,@(when (eq output-type :string)
+                                  '(ioutput)))
+                  ,@(when (eq output-type :string)
+                          '((simple-string result))))
+         (labels ((output-char (ch)
+                    (if (= col columns)
+                        (progn
+                          ,@(case output-type
+                                  (:stream
+                                   '((write-char #\Newline output)))
+                                 (:string
+                                  '((setf (schar result ioutput) #\Newline)
+                                    (incf ioutput))))
+                          (setq col 1))
+                     (incf col))
+                 ,@(case output-type
+                         (:stream
+                          '((write-char ch output)))
+                         (:string
+                          '((setf (schar result ioutput) ch)
+                            (incf ioutput)))))
+               (output-group (svalue chars)
+                 (declare (fixnum svalue chars))
+                 (output-char
+                  (schar encode-table
+                         (the fixnum
+                           (logand #x3f
+                                   (the fixnum (ash svalue -18))))))
+                 (output-char
+                  (schar encode-table
+                         (the fixnum
+                           (logand #x3f
+                                        (the fixnum (ash svalue -12))))))
+                 (if (> chars 2)
+                     (output-char
+                      (schar encode-table
+                             (the fixnum
+                               (logand #x3f
+                                       (the fixnum (ash svalue -6))))))
+                     (output-char pad))
+                   (if (> chars 3)
+                       (output-char
+                        (schar encode-table
+                               (the fixnum
+                                 (logand #x3f svalue))))
+                       (output-char pad))))
+        (do ((igroup 0 (the fixnum (1+ igroup)))
+             (isource 0 (the fixnum (+ isource 3))))
+            ((= igroup complete-group-count)
+             (cond
+               ((= remainder 2)
+                (output-group
+                 (the fixnum
+                     (+
+                      (the fixnum
+                        (ash
+                         ,(case input-type
+                                (:string
+                                 '(char-code (the character (char input isource))))
+                                (:usb8-array
+                                 '(the fixnum (aref input isource))))
+                         16))
+                      (the fixnum
+                        (ash
+                         ,(case input-type
+                                (:string
+                                 '(char-code (the character (char input
+                                                                  (the fixnum (1+ isource))))))
+                                (:usb8-array
+                                 '(the fixnum (aref input (the fixnum
+                                                            (1+ isource))))))
+                         8))))
+                 3))
+               ((= remainder 1)
+                (output-group
+                 (the fixnum
+                   (ash
+                    ,(case input-type
+                           (:string
+                            '(char-code (the character (char input isource))))
+                           (:usb8-array
+                            '(the fixnum (aref input isource))))
+                    16))
+                 2)))
+             ,(case output-type
+                    (:string
+                     'result)
+                    (:stream
+                     'output)))
+          (declare (fixnum igroup isource))
+          (output-group
+           (the fixnum
+             (+
+              (the fixnum
+                (ash
+                 (the fixnum
+                 ,(case input-type
+                        (:string
+                         '(char-code (the character (char input isource))))
+                        (:usb8-array
+                         '(aref input isource))))
+                 16))
+              (the fixnum
+                (ash
+                 (the fixnum
+                   ,(case input-type
+                          (:string
+                           '(char-code (the character (char input
+                                                            (the fixnum (1+ isource))))))
+                        (:usb8-array
+                         '(aref input (1+ isource)))))
+                 8))
+              (the fixnum
+                ,(case input-type
+                       (:string
+                        '(char-code (the character (char input
+                                                         (the fixnum (+ 2 isource))))))
+                       (:usb8-array
+                        '(aref input (+ 2 isource))))
+                )))
+           4)))))))
 
 (def-*-to-base64-* :string :string)
 (def-*-to-base64-* :string :stream)
@@ -211,112 +211,112 @@ with a #\Newline."
 (defun integer-to-base64-string (input &key (uri nil) (columns 0))
   "Encode an integer to base64 format."
   (declare (integer input)
-          (fixnum columns)
-          (optimize (speed 3) (space 0) (safety 0)))
+           (fixnum columns)
+           (optimize (speed 3) (space 0) (safety 0)))
   (let ((pad (if uri *uri-pad-char* *pad-char*))
-       (encode-table (if uri *uri-encode-table* *encode-table*)))
+        (encode-table (if uri *uri-encode-table* *encode-table*)))
     (declare (simple-string encode-table)
-            (character pad))
+             (character pad))
     (let* ((input-bits (integer-length input))
-          (byte-bits (round-next-multiple input-bits 8))
-          (padded-bits (round-next-multiple byte-bits 6))
-          (remainder-padding (mod padded-bits 24))
-          (padding-bits (if (zerop remainder-padding)
-                            0
-                            (- 24 remainder-padding)))
-          (padding-chars (/ padding-bits 6))
-          (padded-length (/ (+ padded-bits padding-bits) 6))
-          (last-line-len (if (plusp columns)
-                             (- padded-length (* columns
-                                                 (truncate
-                                                  padded-length columns)))
-                             0))
-          (num-lines (if (plusp columns)
-                         (truncate (+ padded-length (1- columns)) columns)
-                         0))
-          (num-breaks (if (plusp num-lines)
-                          (1- num-lines)
-                          0))
-          (strlen (+ padded-length num-breaks))
-          (last-char (1- strlen))
-          (str (make-string strlen))
-          (col (if (zerop last-line-len)
-                    columns
-                   last-line-len)))
+           (byte-bits (round-next-multiple input-bits 8))
+           (padded-bits (round-next-multiple byte-bits 6))
+           (remainder-padding (mod padded-bits 24))
+           (padding-bits (if (zerop remainder-padding)
+                             0
+                             (- 24 remainder-padding)))
+           (padding-chars (/ padding-bits 6))
+           (padded-length (/ (+ padded-bits padding-bits) 6))
+           (last-line-len (if (plusp columns)
+                              (- padded-length (* columns
+                                                  (truncate
+                                                   padded-length columns)))
+                              0))
+           (num-lines (if (plusp columns)
+                          (truncate (+ padded-length (1- columns)) columns)
+                          0))
+           (num-breaks (if (plusp num-lines)
+                           (1- num-lines)
+                           0))
+           (strlen (+ padded-length num-breaks))
+           (last-char (1- strlen))
+           (str (make-string strlen))
+           (col (if (zerop last-line-len)
+                     columns
+                    last-line-len)))
       (declare (fixnum padded-length num-lines col last-char
-                      padding-chars last-line-len))
+                       padding-chars last-line-len))
       (unless (plusp columns)
-       (setq col -1)) ;; set to flag to optimize in loop
-      
+        (setq col -1)) ;; set to flag to optimize in loop
+
       (dotimes (i padding-chars)
-       (declare (fixnum i))
-       (setf (schar str (the fixnum (- last-char i))) pad))
+        (declare (fixnum i))
+        (setf (schar str (the fixnum (- last-char i))) pad))
 
       (do* ((strpos (- last-char padding-chars) (1- strpos))
-           (int (ash input (/ padding-bits 3))))
-          ((minusp strpos)
-           str)
-       (declare (fixnum strpos) (integer int))
-       (cond
-         ((zerop col)
-          (setf (schar str strpos) #\Newline)
-          (setq col columns))
-         (t
-          (setf (schar str strpos)
-                (schar encode-table (the fixnum (logand int #x3f))))
-          (setq int (ash int -6))
-          (decf col)))))))
+            (int (ash input (/ padding-bits 3))))
+           ((minusp strpos)
+            str)
+        (declare (fixnum strpos) (integer int))
+        (cond
+          ((zerop col)
+           (setf (schar str strpos) #\Newline)
+           (setq col columns))
+          (t
+           (setf (schar str strpos)
+                 (schar encode-table (the fixnum (logand int #x3f))))
+           (setq int (ash int -6))
+           (decf col)))))))
 
 (defun integer-to-base64-stream (input stream &key (uri nil) (columns 0))
   "Encode an integer to base64 format."
   (declare (integer input)
-          (fixnum columns)
-          (optimize (speed 3) (space 0) (safety 0)))
+           (fixnum columns)
+           (optimize (speed 3) (space 0) (safety 0)))
   (let ((pad (if uri *uri-pad-char* *pad-char*))
-       (encode-table (if uri *uri-encode-table* *encode-table*)))
+        (encode-table (if uri *uri-encode-table* *encode-table*)))
     (declare (simple-string encode-table)
-            (character pad))
+             (character pad))
     (let* ((input-bits (integer-length input))
-          (byte-bits (round-next-multiple input-bits 8))
-          (padded-bits (round-next-multiple byte-bits 6))
-          (remainder-padding (mod padded-bits 24))
-          (padding-bits (if (zerop remainder-padding)
-                            0
-                            (- 24 remainder-padding)))
-          (padding-chars (/ padding-bits 6))
-          (padded-length (/ (+ padded-bits padding-bits) 6))
-          (strlen padded-length)
-          (nonpad-chars (- strlen padding-chars))
-          (last-nonpad-char (1- nonpad-chars))
-          (str (make-string strlen)))
+           (byte-bits (round-next-multiple input-bits 8))
+           (padded-bits (round-next-multiple byte-bits 6))
+           (remainder-padding (mod padded-bits 24))
+           (padding-bits (if (zerop remainder-padding)
+                             0
+                             (- 24 remainder-padding)))
+           (padding-chars (/ padding-bits 6))
+           (padded-length (/ (+ padded-bits padding-bits) 6))
+           (strlen padded-length)
+           (nonpad-chars (- strlen padding-chars))
+           (last-nonpad-char (1- nonpad-chars))
+           (str (make-string strlen)))
       (declare (fixnum padded-length last-nonpad-char))
       (do* ((strpos 0 (the fixnum (1+ strpos)))
-           (int (ash input (/ padding-bits 3)) (ash int -6))
-           (6bit-value (the fixnum (logand int #x3f))
-                       (the fixnum (logand int #x3f))))
-          ((= strpos nonpad-chars)
-           (let ((col 0))
-             (declare (fixnum col))
-             (dotimes (i nonpad-chars)
-               (declare (fixnum i))
-               (write-char (schar str i) stream)
-               (when (plusp columns)
-                 (incf col)
-                 (when (= col columns)
-                   (write-char #\Newline stream)
-                   (setq col 0))))
-             (dotimes (ipad padding-chars)
-               (declare (fixnum ipad))
-               (write-char pad stream)
-               (when (plusp columns)
-                 (incf col)
-                 (when (= col columns)
-                   (write-char #\Newline stream)
-                   (setq col 0)))))
-           stream)
-       (declare (fixnum 6bit-value strpos)
-                (integer int))
-       (setf (schar str (- last-nonpad-char strpos))
-             (schar encode-table 6bit-value))
-       ))))
+            (int (ash input (/ padding-bits 3)) (ash int -6))
+            (6bit-value (the fixnum (logand int #x3f))
+                        (the fixnum (logand int #x3f))))
+           ((= strpos nonpad-chars)
+            (let ((col 0))
+              (declare (fixnum col))
+              (dotimes (i nonpad-chars)
+                (declare (fixnum i))
+                (write-char (schar str i) stream)
+                (when (plusp columns)
+                  (incf col)
+                  (when (= col columns)
+                    (write-char #\Newline stream)
+                    (setq col 0))))
+              (dotimes (ipad padding-chars)
+                (declare (fixnum ipad))
+                (write-char pad stream)
+                (when (plusp columns)
+                  (incf col)
+                  (when (= col columns)
+                    (write-char #\Newline stream)
+                    (setq col 0)))))
+            stream)
+        (declare (fixnum 6bit-value strpos)
+                 (integer int))
+        (setf (schar str (- last-nonpad-char strpos))
+              (schar encode-table 6bit-value))
+        ))))