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Remove remaining "display" uses in (web http)

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* module/web/http.scm (header-writer): Default to calling put-string.
  (put-list): Rename from write-list, take the port first, and call the
  put-item function with port then value.  Adapt all callers.
  (write-date): Rename display-digits to put-digits.
  (put-challenge): Rename from write-challenge, adapt arguments to put
  convention, and adapt callers.
  (declare-symbol-list-header!): Use put-symbol.
  (declare-integer-header!): Use put-non-negative-integer.o
  (declare-entity-tag-list-header!): Use put-entity-tag-list.
  ("If-Range", "Etag"): Adapt to put-entity-tag.
  (make-chunked-output-port): Use put-char.
This commit is contained in:
Andy Wingo 2017-02-08 08:58:46 +01:00
parent 96b994b6f8
commit ecdff904cb
1 changed files with 62 additions and 59 deletions
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93
module/web/http.scm
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@ -145,11 +145,12 @@ is ‘string?’."
(define (header-writer sym)
"Return a procedure that writes values for headers named SYM to a
port. The resulting procedure takes two arguments: a value and a port.
The default writer is ‘display’."
The default writer will call ‘put-string’."
(let ((decl (lookup-header-decl sym)))
(if decl
(header-decl-writer decl)
display)))
(lambda (val port)
(put-string port val)))))
(define (read-header-line port)
"Read an HTTP header line and return it without its final CRLF or LF.
@ -308,7 +309,7 @@ as an ordered alist."
(list-of? val string?))
(define (write-list-of-strings val port)
(write-list val port display ", "))
(put-list port val put-string ", "))
(define (split-header-names str)
(map string->header (split-and-trim str)))
@ -317,8 +318,8 @@ as an ordered alist."
(list-of? val symbol?))
(define (write-header-list val port)
(write-list val port
(lambda (x port)
(put-list port val
(lambda (port x)
(put-string port (header->string x)))
", "))
@ -357,24 +358,24 @@ as an ordered alist."
(lp (1+ i) (1+ qi) escapes)))
(bad-header-component 'qstring str))))
(define (write-list items port write-item delim)
(define (put-list port items put-item delim)
(match items
(() (values))
((item . items)
(write-item item port)
(put-item port item)
(let lp ((items items))
(match items
(() (values))
((item . items)
(put-string port delim)
(write-item item port)
(put-item port item)
(lp items)))))))
(define (write-qstring str port)
(put-char port #\")
(if (string-index str #\")
;; optimize me
(write-list (string-split str #\") port display "\\\"")
(put-list port (string-split str #\") put-string "\\\"")
(put-string port str))
(put-char port #\"))
@ -460,8 +461,8 @@ as an ordered alist."
(_ #f)))
(define (write-quality-list l port)
(write-list l port
(lambda (x port)
(put-list port l
(lambda (port x)
(let ((q (car x))
(str (cdr x)))
(put-string port str)
@ -544,9 +545,9 @@ as an ordered alist."
(define* (write-key-value-list list port #:optional
(val-writer default-val-writer) (delim ", "))
(write-list
list port
(lambda (x port)
(put-list
port list
(lambda (port x)
(match x
((k . #f)
(put-symbol port k))
@ -630,9 +631,9 @@ as an ordered alist."
(define* (write-param-list list port #:optional
(val-writer default-val-writer))
(write-list
list port
(lambda (item port)
(put-list
port list
(lambda (port item)
(write-key-value-list item port val-writer ";"))
","))
@ -840,7 +841,7 @@ as an ordered alist."
(parse-asctime-date str)))))
(define (write-date date port)
(define (display-digits n digits port)
(define (put-digits port n digits)
(define zero (char->integer #\0))
(let lp ((tens (expt 10 (1- digits))))
(when (> tens 0)
@ -855,7 +856,7 @@ as an ordered alist."
((0) "Sun, ") ((1) "Mon, ") ((2) "Tue, ")
((3) "Wed, ") ((4) "Thu, ") ((5) "Fri, ")
((6) "Sat, ") (else (error "bad date" date))))
(display-digits (date-day date) 2 port)
(put-digits port (date-day date) 2)
(put-string port
(case (date-month date)
((1) " Jan ") ((2) " Feb ") ((3) " Mar ")
@ -863,13 +864,13 @@ as an ordered alist."
((7) " Jul ") ((8) " Aug ") ((9) " Sep ")
((10) " Oct ") ((11) " Nov ") ((12) " Dec ")
(else (error "bad date" date))))
(display-digits (date-year date) 4 port)
(put-digits port (date-year date) 4)
(put-char port #\space)
(display-digits (date-hour date) 2 port)
(put-digits port (date-hour date) 2)
(put-char port #\:)
(display-digits (date-minute date) 2 port)
(put-digits port (date-minute date) 2)
(put-char port #\:)
(display-digits (date-second date) 2 port)
(put-digits port (date-second date) 2)
(put-string port " GMT")))
;; Following https://tools.ietf.org/html/rfc7232#section-2.3, an entity
@ -903,7 +904,7 @@ as an ordered alist."
(((? string?) . _) #t)
(_ #f)))
(define (write-entity-tag val port)
(define (put-entity-tag port val)
(match val
((tag . strong?)
(unless strong? (put-string port "W/"))
@ -928,8 +929,8 @@ as an ordered alist."
(define (entity-tag-list? val)
(list-of? val entity-tag?))
(define (write-entity-tag-list val port)
(write-list val port write-entity-tag ", "))
(define (put-entity-tag-list port val)
(put-list port val put-entity-tag ", "))
;; credentials = auth-scheme #auth-param
;; auth-scheme = token
@ -1030,7 +1031,7 @@ as an ordered alist."
((((? symbol?) . (? key-value-list?)) ...) #t)
(_ #f)))
(define (write-challenge val port)
(define (put-challenge port val)
(match val
((scheme . params)
(put-symbol port scheme)
@ -1038,7 +1039,7 @@ as an ordered alist."
(write-key-value-list params port))))
(define (write-challenges val port)
(write-list val port write-challenge ", "))
(put-list port val put-challenge ", "))
@ -1258,7 +1259,7 @@ treated specially, and is just returned as a plain string."
(lambda (v)
(list-of? v symbol?))
(lambda (v port)
(write-list v port display ", "))))
(put-list port v put-symbol ", "))))
;; emacs: (put 'declare-header-list-header! 'scheme-indent-function 1)
(define (declare-header-list-header! name)
@ -1268,7 +1269,8 @@ treated specially, and is just returned as a plain string."
;; emacs: (put 'declare-integer-header! 'scheme-indent-function 1)
(define (declare-integer-header! name)
(declare-header! name
parse-non-negative-integer non-negative-integer? display))
parse-non-negative-integer non-negative-integer?
(lambda (val port) (put-non-negative-integer port val))))
;; emacs: (put 'declare-uri-header! 'scheme-indent-function 1)
(define (declare-uri-header! name)
@ -1319,7 +1321,7 @@ treated specially, and is just returned as a plain string."
(lambda (val port)
(if (eq? val '*)
(put-string port "*")
(write-entity-tag-list val port)))))
(put-entity-tag-list port val)))))
;; emacs: (put 'declare-credentials-header! 'scheme-indent-function 1)
(define (declare-credentials-header! name)
@ -1405,8 +1407,8 @@ treated specially, and is just returned as a plain string."
split-header-names
list-of-header-names?
(lambda (val port)
(write-list val port
(lambda (x port)
(put-list port val
(lambda (port x)
(put-string port
(if (eq? x 'close)
"close"
@ -1504,9 +1506,9 @@ treated specially, and is just returned as a plain string."
(or (not date) (date? date))))
(_ #f)))))
(lambda (val port)
(write-list
val port
(lambda (w port)
(put-list
port val
(lambda (port w)
(match w
((code host text date)
(put-non-negative-integer port code)
@ -1652,9 +1654,9 @@ treated specially, and is just returned as a plain string."
(() (values))
(args
(put-string port ";")
(write-list
args port
(lambda (pair port)
(put-list
port args
(lambda (port pair)
(match pair
((k . v)
(put-symbol port k)
@ -1806,7 +1808,7 @@ treated specially, and is just returned as a plain string."
(lambda (val port)
(if (date? val)
(write-date val port)
(write-entity-tag val port))))
(put-entity-tag port val))))
;; If-Unmodified-Since = HTTP-date
;;
@ -1862,9 +1864,9 @@ treated specially, and is just returned as a plain string."
((unit . ranges)
(put-symbol port unit)
(put-char port #\=)
(write-list
ranges port
(lambda (range port)
(put-list
port ranges
(lambda (port range)
(match range
((start . end)
(when start (put-non-negative-integer port start))
@ -1907,7 +1909,8 @@ treated specially, and is just returned as a plain string."
(declare-header! "ETag"
parse-entity-tag
entity-tag?
write-entity-tag)
(lambda (val port)
(put-entity-tag port val)))
;; Location = URI-reference
;;
@ -2051,7 +2054,7 @@ KEEP-ALIVE? is true."
(let ((len (q-length queue)))
(put-string port (number->string len 16))
(put-string port "\r\n")
(q-for-each (lambda (elem) (write-char elem port))
(q-for-each (lambda (elem) (put-char port elem))
queue)
(put-string port "\r\n"))))
(define (close)