#lang racket/base (require (for-syntax racket/base)) (require racket/string xml xml/path sugar/define sugar/container sugar/coerce sugar/test) (require "file.rkt" txexpr "world.rkt" "cache.rkt" "pagetree.rkt" "debug.rkt") (provide (all-from-out sugar/coerce)) (define/contract+provide (metas->here metas) (hash? . -> . pagenode?) (path->pagenode (or (select-from-metas (world:current-here-path-key) metas) 'unknown))) (define (pagenode->path pagenode) (build-path (world:current-project-root) (symbol->string pagenode))) (define+provide/contract (select key value-source) (coerce/symbol? (or/c hash? txexpr? pagenode? pathish?) . -> . (or/c #f txexpr-element?)) ;; of value-source is specfically 'metas or 'doc, ;; restrict the search to there. ;; otherwise look in metas, then in doc for key (define (do-doc-result) (define doc-result (select-from-doc key value-source)) (and doc-result (car doc-result))) (cond [(or (hash? value-source) (equal? value-source (world:current-meta-export))) (select-from-metas key value-source)] [(equal? value-source (world:current-main-export)) (do-doc-result)] [else (define metas-result (and (not (txexpr? value-source)) (select-from-metas key value-source))) (or metas-result (do-doc-result))])) (module-test-external (check-equal? (select 'key '#hash((key . "value"))) "value") (check-false (select 'absent-key '#hash((key . "value")))) (check-equal? (select 'key '(root (key "value"))) "value") (check-false (select 'absent-key '(root (key "value")))) (let ([metas '#hash((key . "value"))]) (check-equal? (select 'key metas) "value") (check-false (select 'absent-key metas))) (let ([doc '(root (key "value"))]) (check-equal? (select 'key doc) "value") (check-false (select 'absent-key doc)))) (define+provide/contract (select* key value-source) (coerce/symbol? (or/c hash? txexpr? pagenode? pathish?) . -> . (or/c #f txexpr-elements?)) (define metas-result (and (not (txexpr? value-source)) (select-from-metas key value-source))) (define doc-result (select-from-doc key value-source)) (define result (append (or (and metas-result (list metas-result)) null) (or doc-result null))) (and (not (null? result)) result)) (define+provide/contract (select-from-metas key metas-source) (coerce/symbol? (or/c hash? pagenode? pathish?) . -> . (or/c #f txexpr-element?)) (define metas (cond [(hash? metas-source) metas-source] [else (get-metas metas-source)])) (and (hash-has-key? metas key) (hash-ref metas key))) (module-test-external (let ([metas '#hash((key . "value"))]) (check-equal? (select-from-metas 'key metas) "value") (check-false (select-from-metas 'absent-key metas)))) (define+provide/contract (select-from-doc key doc-source) (coerce/symbol? (or/c txexpr? pagenode? pathish?) . -> . (or/c #f txexpr-elements?)) (define doc (cond [(txexpr? doc-source) doc-source] [else (get-doc doc-source)])) (define result (se-path*/list (list key) doc)) (and (not (null? result)) result)) (module-test-external (check-equal? (select-from-doc 'key '(root (key "value"))) '("value")) (check-false (select-from-doc 'absent-key '(root (key "value")))) (let ([doc '(root (key "value"))]) (check-equal? (select-from-doc 'key doc) '("value")) (check-false (select-from-doc 'absent-key doc)))) (define (get-metas pagenode-or-path) ; ((or/c pagenode? pathish?) . -> . hash?) (define source-path (->source-path (cond [(pagenode? pagenode-or-path) (pagenode->path pagenode-or-path)] [else pagenode-or-path]))) (if source-path (cached-require source-path (world:current-meta-export)) (error (format "get-metas: no source found for '~a' in directory ~a" pagenode-or-path (current-directory))))) (define (get-doc pagenode-or-path) ; ((or/c pagenode? pathish?) . -> . (or/c txexpr? string?)) (define source-path (->source-path (cond [(pagenode? pagenode-or-path) (pagenode->path pagenode-or-path)] [else pagenode-or-path]))) (if source-path (cached-require source-path (world:current-main-export)) (error (format "get-doc: no source found for '~a' in directory ~a" pagenode-or-path (current-directory))))) (define (trim-outer-tag html) (define matches (regexp-match #px"<.*?>(.*)" html)) (define paren-match (cadr matches)) paren-match) (define+provide/contract (->html x #:tag [tag #f] #:attrs [attrs #f] #:splice [splice? #f]) ((xexpr?) (#:tag (or/c #f txexpr-tag?) #:attrs (or/c #f txexpr-attrs?) #:splice boolean?) . ->* . string?) (when (and (not (txexpr? x)) attrs (not tag)) (error '->html "can't use attribute list '~a without a #:tag argument" attrs)) (if (or tag (txexpr? x)) (let () (define html-tag (or tag (get-tag x))) (define html-attrs (or attrs (and (txexpr? x) (get-attrs x)) null)) (define html-elements (or (and (txexpr? x) (get-elements x)) (list x))) (define html (xexpr->html (make-txexpr html-tag html-attrs html-elements))) (if splice? (trim-outer-tag html) html)) (xexpr->html x))) (module-test-external (define tx '(root (p "hello"))) (check-equal? (->html tx) "

hello

") (check-equal? (->html #:tag 'brennan tx) "

hello

") (check-equal? (->html #:attrs '((id "dale")) tx) "

hello

") (check-equal? (->html #:splice #t tx) "

hello

") (check-equal? (->html #:tag 'brennan #:attrs '((id "dale")) tx) "

hello

") (check-equal? (->html #:tag 'brennan #:attrs '((id "dale")) #:splice #t tx) "

hello

") (define x "hello") (check-equal? (->html x) "hello") (check-equal? (->html #:tag 'brennan x) "hello") (check-exn exn:fail? (λ() (->html #:attrs '((id "dale")) x) "hello")) ;; won't work without tag (check-equal? (->html #:splice #t x) "hello") (check-equal? (->html #:tag 'brennan #:attrs '((id "dale")) x) "hello") (check-equal? (->html #:tag 'brennan #:attrs '((id "dale")) #:splice #t x) "hello")) (provide when/block) (define-syntax (when/block stx) (syntax-case stx () [(_ condition body ...) #'(if condition (string-append* (with-handlers ([exn:fail? (λ(exn) (error (format "within when/block, ~a" (exn-message exn))))]) (map ->string (list body ...)))) "")]))