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pollen/file.rkt

256 lines
12 KiB
Racket

#lang racket/base
(require (for-syntax racket/base racket/syntax))
(require racket/contract racket/path racket/match)
(require (only-in racket/path filename-extension))
(require "world.rkt" sugar/define sugar/file sugar/string sugar/coerce sugar/test)
;; for files like svg that are not source in pollen terms,
;; but have a textual representation separate from their display.
(define+provide/contract (sourceish? x)
(any/c . -> . coerce/boolean?)
(define sourceish-extensions (list "svg"))
(with-handlers ([exn:fail? (λ(e) #f)])
(member (get-ext x) sourceish-extensions)))
(module-test-external
(check-true (sourceish? "foo.svg"))
(check-false (sourceish? "foo.gif")))
;; compare directories by their exploded path elements,
;; not by equal?, which will give wrong result if no slash on the end
(define+provide/contract (directories-equal? dirx diry)
(coerce/path? coerce/path? . -> . coerce/boolean?)
(equal? (explode-path dirx) (explode-path diry)))
(module-test-external
(check-true (directories-equal? "/Users/MB/foo" "/Users/MB/foo/"))
(check-false (directories-equal? "/Users/MB/foo" "Users/MB/foo")))
;; helper function for pagetree
;; make paths absolute to test whether files exist,
;; then convert back to relative
(define+provide/contract (visible? path)
(coerce/path? . -> . coerce/boolean?)
(not ((->string path) . starts-with? . ".")))
(define (paths? x) (and (list? x) (andmap path? x)))
(define (complete-paths? x) (and (list? x) (andmap complete-path? x)))
(define+provide/contract (visible-files dir)
(pathish? . -> . paths?)
(filter visible?
(map (λ(p) (find-relative-path dir p))
(filter file-exists?
(directory-list dir #:build? #t)))))
(define+provide/contract (escape-last-ext x [escape-char (world:current-extension-escape-char)])
((pathish?) (char?) . ->* . coerce/path?)
;; if x has a file extension, reattach it with the escape char
(define current-ext (get-ext x))
(if current-ext
(format "~a~a~a" (->string (remove-ext x)) escape-char current-ext)
x))
(module-test-external
(require sugar/coerce)
(check-equal? (escape-last-ext "foo") (->path "foo"))
(check-equal? (escape-last-ext "foo.html") (->path "foo!html"))
(check-equal? (escape-last-ext "foo.html" #\$) (->path "foo$html")))
(define+provide/contract (unescape-ext x [escape-char (world:current-extension-escape-char)])
((pathish?) (char?) . ->* . coerce/path?)
;; if x has an escaped extension, unescape it.
(define xstr (->string x))
(define pat (regexp (format "(.*)[~a](.*)$" escape-char)))
(define results (regexp-match pat xstr))
(if results
(match-let ([(list _ filename ext) results])
(add-ext filename ext))
x))
(module-test-external
(require sugar/coerce)
(check-equal? (unescape-ext "foo") (->path "foo"))
(check-equal? (unescape-ext "foo.html") (->path "foo.html"))
(check-equal? (unescape-ext "foo!html") (->path "foo.html"))
(check-equal? (unescape-ext "foo$html" #\$) (->path "foo.html"))
(check-equal? (unescape-ext "foo!bar!!html") (->path "foo!bar!.html"))
(check-equal? (unescape-ext "foo$bar$$html" #\$) (->path "foo$bar$.html")))
(define-syntax (make-source-utility-functions stx)
(syntax-case stx ()
[(_ stem)
(let ([stem-datum (syntax->datum #'stem)])
(with-syntax ([world:current-stem-source-ext (format-id stx "world:current-~a-source-ext" #'stem)]
[stem-source? (format-id stx "~a-source?" #'stem)]
[get-stem-source (format-id stx "get-~a-source" #'stem)]
[has-stem-source? (format-id stx "has-~a-source?" #'stem)]
[has/is-stem-source? (format-id stx "has/is-~a-source?" #'stem)]
[->stem-source-path (format-id stx "->~a-source-path" #'stem)]
[->stem-source-paths (format-id stx "->~a-source-paths" #'stem)]
[->stem-source+output-paths (format-id stx "->~a-source+output-paths" #'stem)])
#`(begin
;; does file have particular extension
(define+provide (stem-source? x)
(->boolean (and (pathish? x) (has-ext? (->path x) (world:current-stem-source-ext)))))
;; non-theoretical: want the first possible source that exists in the filesystem
(define+provide (get-stem-source x)
(and (pathish? x)
(let ([source-paths (->stem-source-paths (->path x))])
(and source-paths (ormap (λ(sp) (and (file-exists? sp) sp)) source-paths)))))
;; does the source-ified version of the file exist
(define+provide (has-stem-source? x)
(->boolean (get-stem-source x)))
;; it's a file-ext source file, or a file that's the result of a file-ext source
(define+provide (has/is-stem-source? x)
(->boolean (and (pathish? x) (ormap (λ(proc) (proc (->path x))) (list stem-source? has-stem-source?)))))
;; get first possible source path (does not check filesystem)
(define+provide/contract (->stem-source-path x)
(pathish? . -> . (or/c #f path?))
(define paths (->stem-source-paths x))
(and paths (car paths)))
;; get all possible source paths (does not check filesystem)
(define+provide/contract (->stem-source-paths x)
(pathish? . -> . (or/c #f (non-empty-listof path?)))
(define results (if (stem-source? x)
(list x) ; already has the source extension
#,(if (eq? stem-datum 'scribble)
#'(if (x . has-ext? . 'html) ; different logic for scribble sources
(list (add-ext (remove-ext* x) (world:current-stem-source-ext)))
#f)
#'(list* (add-ext x (world:current-stem-source-ext))
(if (get-ext x)
(list (add-ext (escape-last-ext x) (world:current-stem-source-ext)))
null)))))
(and results (map ->path results)))
;; coerce either a source or output file to both
(define+provide/contract (->stem-source+output-paths path)
(pathish? . -> . (values path? path?))
;; get the real source path if available, otherwise a theoretical path
(values (->complete-path (or (get-stem-source path) (->stem-source-path path)))
(->complete-path (->output-path path)))))))]))
(make-source-utility-functions preproc)
(module-test-external
(require sugar/coerce)
(check-true (preproc-source? "foo.pp"))
(check-false (preproc-source? "foo.bar"))
(check-false (preproc-source? #f))
(check-equal? (->preproc-source-paths (->path "foo.pp")) (list (->path "foo.pp")))
(check-equal? (->preproc-source-paths (->path "foo.html")) (list (->path "foo.html.pp") (->path "foo!html.pp")))
(check-equal? (->preproc-source-paths "foo") (list (->path "foo.pp")))
(check-equal? (->preproc-source-paths 'foo) (list (->path "foo.pp")))
(check-equal? (->preproc-source-path (->path "foo.pp")) (->path "foo.pp"))
(check-equal? (->preproc-source-path (->path "foo.html")) (->path "foo.html.pp"))
(check-equal? (->preproc-source-path "foo") (->path "foo.pp"))
(check-equal? (->preproc-source-path 'foo) (->path "foo.pp")))
(make-source-utility-functions null)
(make-source-utility-functions pagetree)
(module-test-external
(require pollen/world)
(check-true (pagetree-source? (format "foo.~a" (world:current-pagetree-source-ext))))
(check-false (pagetree-source? (format "~a.foo" (world:current-pagetree-source-ext))))
(check-false (pagetree-source? #f)))
(make-source-utility-functions markup)
(module-test-external
(require sugar/coerce)
(check-true (markup-source? "foo.pm"))
(check-false (markup-source? "foo.p"))
(check-false (markup-source? #f))
(check-equal? (->markup-source-paths (->path "foo.pm")) (list (->path "foo.pm")))
(check-equal? (->markup-source-paths (->path "foo.html")) (list (->path "foo.html.pm") (->path "foo!html.pm")))
(check-equal? (->markup-source-paths "foo") (list (->path "foo.pm")))
(check-equal? (->markup-source-paths 'foo) (list (->path "foo.pm")))
(check-equal? (->markup-source-path (->path "foo.pm")) (->path "foo.pm"))
(check-equal? (->markup-source-path (->path "foo.html")) (->path "foo.html.pm"))
(check-equal? (->markup-source-path "foo") (->path "foo.pm"))
(check-equal? (->markup-source-path 'foo) (->path "foo.pm")))
(make-source-utility-functions markdown)
(make-source-utility-functions template)
(module-test-external
(check-true (template-source? "foo.html.pt"))
(check-false (template-source? "foo.html"))
(check-false (template-source? #f)))
(make-source-utility-functions scribble)
(define/contract+provide (->source-path path)
(coerce/path? . -> . (or/c #f path?))
(ormap (λ(proc) (proc path)) (list get-markup-source get-markdown-source get-preproc-source get-null-source get-scribble-source)))
(define+provide/contract (->output-path x)
(coerce/path? . -> . coerce/path?)
(cond
[(or (markup-source? x) (preproc-source? x) (null-source? x) (markdown-source? x) (template-source? x)) (unescape-ext (remove-ext x))]
[(scribble-source? x) (add-ext (remove-ext x) 'html)]
[else x]))
(module-test-external
(require sugar/coerce)
(check-equal? (->output-path (->path "foo.pmap")) (->path "foo.pmap"))
(check-equal? (->output-path "foo.html") (->path "foo.html"))
(check-equal? (->output-path 'foo.html.p) (->path "foo.html"))
(check-equal? (->output-path (->path "/Users/mb/git/foo.html.p")) (->path "/Users/mb/git/foo.html"))
(check-equal? (->output-path "foo.xml.p") (->path "foo.xml"))
(check-equal? (->output-path 'foo.barml.p) (->path "foo.barml"))
(check-equal? (->output-path 'foo!html.p) (->path "foo.html"))
(check-equal? (->output-path (->path "/Users/mb/git/foo!html.p")) (->path "/Users/mb/git/foo.html"))
(check-equal? (->output-path "foo!xml.p") (->path "foo.xml"))
(check-equal? (->output-path 'foo!barml.p) (->path "foo.barml")))
(define+provide/contract (project-files-with-ext ext)
(coerce/symbol? . -> . complete-paths?)
(map ->complete-path (filter (λ(i) (has-ext? i ext)) (directory-list (world:current-project-root)))))
(define+provide (racket-source? x)
(->boolean (and (pathish? x) (has-ext? (->path x) 'rkt))))
;; to identify unsaved sources in DrRacket
(define (unsaved-source? path-string)
((substring (->string path-string) 0 7) . equal? . "unsaved"))
(define+provide (magic-directory? path)
(and (directory-exists? path)
(or (ends-with? (path->string path) "compiled"))))
(define+provide (cache-file? path)
(or (ends-with? (path->string path) (world:current-cache-filename))))
(define+provide (pollen-related-file? file)
(ormap (λ(proc) (proc file)) (list
preproc-source?
markup-source?
markdown-source?
template-source?
pagetree-source?
scribble-source?
null-source?
racket-source?
magic-directory?
cache-file?)))