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specials.lisp
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specials.lisp
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;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: FLEXI-STREAMS; Base: 10 -*-
;;; $Header: /usr/local/cvsrep/flexi-streams/specials.lisp,v 1.33 2008/05/25 01:40:54 edi Exp $
;;; Copyright (c) 2005-2008, Dr. Edmund Weitz. All rights reserved.
;;; Redistribution and use in source and binary forms, with or without
;;; modification, are permitted provided that the following conditions
;;; are met:
;;; * Redistributions of source code must retain the above copyright
;;; notice, this list of conditions and the following disclaimer.
;;; * Redistributions in binary form must reproduce the above
;;; copyright notice, this list of conditions and the following
;;; disclaimer in the documentation and/or other materials
;;; provided with the distribution.
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR 'AS IS' AND ANY EXPRESSED
;;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
;;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;;; ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
;;; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
;;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
;;; GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
;;; INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
;;; WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
;;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
(in-package :flexi-streams)
(defvar *standard-optimize-settings*
'(optimize
speed
(space 0)
(debug 1)
(compilation-speed 0))
"The standard optimize settings used by most declaration expressions.")
(defvar *fixnum-optimize-settings*
'(optimize
speed
(space 0)
(debug 1)
(compilation-speed 0)
#+:lispworks (hcl:fixnum-safety 0))
"Like *STANDARD-OPTIMIZE-SETTINGS*, but \(on LispWorks) with all
arithmetic being fixnum arithmetic.")
(defconstant +lf+ (char-code #\Linefeed))
(defconstant +cr+ (char-code #\Return))
(defvar *current-unreader* nil
"A unary function which might be called to `unread' a character
\(i.e. the sequence of octets it represents).
Used by the function OCTETS-TO-CHAR-CODE and must always be bound to a
suitable functional object when this function is called.")
(defvar +name-map+
'((:utf8 . :utf-8)
(:utf16 . :utf-16)
(:ucs2 . :utf-16)
(:ucs-2 . :utf-16)
(:unicode . :utf-16)
(:cp936 . :gbk)
(:gb2312 . :gbk)
(:utf32 . :utf-32)
(:ucs4 . :utf-32)
(:ucs-4 . :utf-32)
(:ascii . :us-ascii)
(:koi8r . :koi8-r)
(:mac . :mac-roman)
(:macintosh . :mac-roman)
(:macos-roman . :mac-roman)
(:latin-1 . :iso-8859-1)
(:latin1 . :iso-8859-1)
(:latin-2 . :iso-8859-2)
(:latin2 . :iso-8859-2)
(:latin-3 . :iso-8859-3)
(:latin3 . :iso-8859-3)
(:latin-4 . :iso-8859-4)
(:latin4 . :iso-8859-4)
(:cyrillic . :iso-8859-5)
(:arabic . :iso-8859-6)
(:greek . :iso-8859-7)
(:hebrew . :iso-8859-8)
(:latin-5 . :iso-8859-9)
(:latin5 . :iso-8859-9)
(:latin-6 . :iso-8859-10)
(:latin6 . :iso-8859-10)
(:thai . :iso-8859-11)
(:latin-7 . :iso-8859-13)
(:latin7 . :iso-8859-13)
(:latin-8 . :iso-8859-14)
(:latin8 . :iso-8859-14)
(:latin-9 . :iso-8859-15)
(:latin9 . :iso-8859-15)
(:latin-0 . :iso-8859-15)
(:latin0 . :iso-8859-15)
(:latin-10 . :iso-8859-16)
(:latin10 . :iso-8859-16)
(:codepage . :code-page)
#+(and :lispworks :win32)
(win32:code-page . :code-page))
"An alist which mapes alternative names for external formats to
their canonical counterparts.")
(defvar +shortcut-map+
'((:ucs-2le . (:ucs-2 :little-endian t))
(:ucs-2be . (:ucs-2 :little-endian nil))
(:ucs-4le . (:ucs-4 :little-endian t))
(:ucs-4be . (:ucs-4 :little-endian nil))
(:utf-16le . (:utf-16 :little-endian t))
(:utf-16be . (:utf-16 :little-endian nil))
(:utf-32le . (:utf-32 :little-endian t))
(:utf-32be . (:utf-32 :little-endian nil))
(:ibm437 . (:code-page :id 437))
(:ibm850 . (:code-page :id 850))
(:ibm852 . (:code-page :id 852))
(:ibm855 . (:code-page :id 855))
(:ibm857 . (:code-page :id 857))
(:ibm860 . (:code-page :id 860))
(:ibm861 . (:code-page :id 861))
(:ibm862 . (:code-page :id 862))
(:ibm863 . (:code-page :id 863))
(:ibm864 . (:code-page :id 864))
(:ibm865 . (:code-page :id 865))
(:ibm866 . (:code-page :id 866))
(:ibm869 . (:code-page :id 869))
(:windows-1250 . (:code-page :id 1250))
(:windows-1251 . (:code-page :id 1251))
(:windows-1252 . (:code-page :id 1252))
(:windows-1253 . (:code-page :id 1253))
(:windows-1254 . (:code-page :id 1254))
(:windows-1255 . (:code-page :id 1255))
(:windows-1256 . (:code-page :id 1256))
(:windows-1257 . (:code-page :id 1257))
(:windows-1258 . (:code-page :id 1258)))
"An alist which maps shortcuts for external formats to their
long forms.")
(defvar *default-eol-style*
#+:win32 :crlf
#-:win32 :lf
"The end-of-line style used by external formats if none is
explicitly given. Depends on the OS the code is compiled on.")
(defvar *default-little-endian*
#+:little-endian t
#-:little-endian nil
"Whether external formats are little-endian by default
\(i.e. unless explicitly specified). Depends on the platform
the code is compiled on.")
(defvar *substitution-char* nil
"If this value is not NIL, it should be a character which is used
\(as if by a USE-VALUE restart) whenever during reading an error of
type FLEXI-STREAM-ENCODING-ERROR would have been signalled otherwise.")
(defconstant +iso-8859-hashes+
(loop for (name . table) in +iso-8859-tables+
collect (cons name (invert-table table)))
"An alist which maps names for ISO-8859 encodings to hash
tables which map character codes to the corresponding octets.")
(defconstant +code-page-hashes+
(loop for (id . table) in +code-page-tables+
collect (cons id (invert-table table)))
"An alist which maps IDs of Windows code pages to hash tables
which map character codes to the corresponding octets.")
(defconstant +ascii-hash+ (invert-table +ascii-table+)
"A hash table which maps US-ASCII character codes to the
corresponding octets.")
(defconstant +koi8-r-hash+ (invert-table +koi8-r-table+)
"A hash table which maps KOI8-R character codes to the
corresponding octets.")
(defconstant +mac-roman-hash+ (invert-table +mac-roman-table+)
"A hash table which maps MAC-ROMAN character codes to the
corresponding octets.")
(defconstant +buffer-size+ 8192
"Default size for buffers used for internal purposes.")
(pushnew :flexi-streams *features*)
;; stuff for Nikodemus Siivola's HYPERDOC
;; see <http://common-lisp.net/project/hyperdoc/>
;; and <http://www.cliki.net/hyperdoc>
;; also used by LW-ADD-ONS
(defvar *hyperdoc-base-uri* "http://weitz.de/flexi-streams/")
(let ((exported-symbols-alist
(loop for symbol being the external-symbols of :flexi-streams
collect (cons symbol
(concatenate 'string
"#"
(string-downcase symbol))))))
(defun hyperdoc-lookup (symbol type)
(declare (ignore type))
(cdr (assoc symbol
exported-symbols-alist
:test #'eq))))