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plain-printer.lisp
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plain-printer.lisp
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(in-package #:3bmd)
;;; "plain text" printer
;;; prints the text contents of the document with no formatting
(defparameter *plain-text-pprint* (copy-pprint-dispatch nil))
(set-pprint-dispatch 'cons
(lambda (s o)
(loop for i in o
do (write i :stream s)))
0
*plain-text-pprint*)
(set-pprint-dispatch 'string
(lambda (s o)
(write o :stream s :pretty nil :escape nil))
0
*plain-text-pprint*)
(defmacro pprinter (tag (stream-var object-var) &body body)
`(let ((*print-pprint-dispatch* *plain-text-pprint*))
(set-pprint-dispatch '(cons (eql ,tag))
(lambda (,stream-var ,object-var) ,@body)
1)))
(pprinter :heading (s o)
(format s "~a " (getf (cdr o) :contents)))
(pprinter :paragraph (s o)
(write (cdr o) :stream s))
(pprinter :verbatim (s o)
(format s "~{[~a]~}" (cdr o)))
(pprinter :code (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :block-quote (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :plain (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :strong (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :link (s o)
(format s "~{~a ~}" (cadr o)))
(pprinter :mailto (s o)
(format s "~{~a ~}" (cadr o)))
(pprinter :explicit-link (s o)
(format s "~{~a ~}" (getf (cdr o) :label)))
(pprinter :reference-link (s o)
(format s "~{~a ~}" (getf (cdr o) :label)))
(pprinter :image (s o)
(format s "~{~a ~}" (getf (cdr o) :label)))
(pprinter :counted-list (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :bullet-list (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :list-item (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :line-break (s o)
(declare (ignore o))
(format s "~%"))
(pprinter :horizontal-rule (s o)
(declare (ignore o))
(format s "----- "))
(pprinter :html (s o)
(declare (ignore s o))
;; should this print anything?
)
(pprinter :raw-html (s o)
(declare (ignore s o))
;; should this print anything?
)
(pprinter :single-quoted (s o)
(format s "'~{~a ~}'" (cdr o)))
(pprinter :double-quoted (s o)
(format s "\"~{~a ~}\"" (cdr o)))
(pprinter :em-dash (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :en-dash (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :left-right-single-arrow (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :left-single-arrow (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :right-single-arrow (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :left-right-double-arrow (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :left-double-arrow (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :right-double-arrow (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :ellipsis (s o)
(format s "~{~a ~}" (cdr o)))
(pprinter :reference (s o)
(declare (ignore s o))
;?(format s "~{~a ~}" (cdr o))
)
(pprinter :apostrophe (s o)
(declare (ignore o))
(format s "'"))
(defmethod print-doc-to-stream-using-format (doc stream (format (eql :plain)))
(let ((*references* (extract-refs doc)))
(with-standard-io-syntax
(let* ((*print-pprint-dispatch* *plain-text-pprint*)
(*print-pretty* t)
(*print-readably* nil)
(old-debug *debugger-hook*)
(*debugger-hook* (lambda (&rest r)
(with-standard-io-syntax
(apply old-debug r)))))
(write doc :stream stream)))
(format stream "~&")))