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121 lines
4.8 KiB
Racket
121 lines
4.8 KiB
Racket
#lang racket/base
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(require racket/list racket/contract racket/rerequire racket/file racket/format xml racket/match racket/set)
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(require (only-in net/url url-query url->path url->string))
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(require (only-in web-server/http/request-structs request-uri request-client-ip))
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(require "world.rkt" "render.rkt" "readability.rkt" "predicates.rkt" "debug.rkt")
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(module+ test (require rackunit))
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;;; Routes for the server module
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;;; separated out for ease of testing
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;;; because it's tedious to start the server just to check a route.
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(provide (all-defined-out))
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;; extract main xexpr from a path
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(define/contract (file->xexpr path #:render [wants-render #t])
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((complete-path?) (#:render boolean?) . ->* . tagged-xexpr?)
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(when wants-render (render path))
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(dynamic-rerequire path) ; stores module mod date; reloads if it's changed
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(dynamic-require path 'main))
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;; todo: rewrite this test, obsolete since filename convention changed
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;;(module+ test
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;; (check-equal? (file->xexpr (build-path (current-directory) "tests/server-routes/foo.p") #:render #f) '(root "\n" "foo")))
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;; read contents of file to string
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;; just file->string with a render option
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(define/contract (slurp path #:render [wants-render #t])
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((complete-path?) (#:render boolean?) . ->* . string?)
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(when wants-render (render path))
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(file->string path))
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(module+ test
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(check-equal? (slurp (build-path (current-directory) "tests/server-routes/bar.html") #:render #f) "<html><body><p>bar</p></body></html>"))
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;; add a wrapper to tagged-xexpr that displays it as monospaced text
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;; for "view source"ish functions
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;; takes either a string or an xexpr
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(define/contract (format-as-code x)
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(xexpr? . -> . tagged-xexpr?)
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`(div ((style "white-space:pre-wrap;font-family:AlixFB,monospaced")) ,x))
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(module+ test
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(check-equal? (format-as-code '(p "foo")) '(div ((style "white-space:pre-wrap;font-family:AlixFB,monospaced")) (p "foo"))))
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;; server routes
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;; these all produce an xexpr, which is handled upstream by response/xexpr
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;; server route that returns html
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;; todo: what is this for?
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(define/contract (route-html path)
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(complete-path? . -> . xexpr?)
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(file->xexpr path))
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;; server route that returns raw html, formatted as code
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;; for viewing source without using "view source"
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(define/contract (route-raw-html path)
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(complete-path? . -> . xexpr?)
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(format-as-code (slurp path #:render #f)))
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;; todo: consolidate with function above, they're the same.
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;; server route that shows contents of file on disk
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(define/contract (route-source path)
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(complete-path? . -> . xexpr?)
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(format-as-code (slurp path)))
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;; server route that returns xexpr (before conversion to html)
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(define/contract (route-xexpr path)
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(complete-path? . -> . xexpr?)
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(format-as-code (~v (file->xexpr path))))
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(define (route-index [dir pollen-project-directory])
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(define (make-link-cell href+text)
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(match-define (cons href text) href+text)
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(filter-not void? `(td ,(when (and href text)
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`(a ((href ,href)) ,text)))))
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(define (make-path-row p)
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(define pstring (->string p))
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(define (file-in-dir? p) (file-exists? (apply build-path (map ->path (list dir p)))))
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(define sources (filter file-in-dir? (list (->preproc-source-path pstring) (->pollen-source-path pstring))))
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(define source (if (not (empty? sources)) (->string (car sources)) #f))
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`(tr ,@(map make-link-cell
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(append (list
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(cons pstring pstring)
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(cons (format "raw/~a" pstring) "raw"))
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(if source
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(list
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(cons source "source")
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(cons (format "xexpr/~a" source) "xexpr")
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(cons (format "~a?force=true" pstring) pstring))
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(make-list 3 (cons #f #f)))))))
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(define (unique-sorted-output-paths xs)
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(sort (set->list (list->set (map ->output-path xs))) #:key ->string string<?))
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(define (ineligible-path? x) (or (not (visible? x)) (member x RESERVED_PATHS)))
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(define project-paths (filter-not ineligible-path? (directory-list dir)))
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`(table ,@(map make-path-row (unique-sorted-output-paths project-paths))))
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(define (get-query-value url key)
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; query is parsed as list of pairs, key is symbol, value is string
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; '((key . "value") ... )
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(let ([result (memf (λ(x) (equal? (car x) key)) (url-query url))])
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(and result (cdar result)))) ; second value of first result
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; default route
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(define (route-default req)
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(define request-url (request-uri req))
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(define path (reroot-path (url->path request-url) pollen-project-directory))
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(define force (equal? (get-query-value request-url 'force) "true"))
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(with-handlers ([exn:fail? (λ(e) (message "Render is skipping" (url->string request-url) "because of error\n" (exn-message e)))])
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(render path #:force force))) |