racket/collects/setup/xref.ss
2008-01-15 15:44:04 +00:00

64 lines
2.6 KiB
Scheme

#lang scheme/base
(require scribble/xref
setup/getinfo
setup/dirs
setup/main-collects)
(provide load-collections-xref)
(define cached-xref #f)
(define (get-dests dir)
(let* ([i (get-info/full dir)]
[scribblings (i 'scribblings)]
[categories (i 'doc-categories (lambda ()
(map (lambda (d) 'library) scribblings)))])
(map (lambda (d cat)
(and (not (eq? cat 'omit))
(not (and (pair? cat) (eq? (car cat) 'omit)))
(pair? d)
(let* ([flags (if (pair? (cdr d)) (cadr d) null)]
[name (if (and (pair? (cdr d)) (pair? (cddr d)) (caddr d))
(cadr d)
(let-values ([(base name dir?) (split-path (car d))])
(path-replace-suffix name #"")))])
(build-path
(cond
[(memq 'main-doc-root flags)
(find-doc-dir)]
[(memq 'user-doc-root flags)
(find-user-doc-dir)]
[(memq 'user-doc flags)
(build-path (find-user-doc-dir) name)]
[(or (memq 'main-doc flags)
(pair? (path->main-collects-relative dir)))
(build-path (find-doc-dir) name)]
[else
(build-path dir "compiled" "doc" name)])
"out.sxref"))))
scribblings
categories)))
(define (load-collections-xref [report-loading void])
(or cached-xref
(begin
(report-loading)
(let* ([dests (map get-dests (find-relevant-directories '(scribblings)))]
[dests (filter values (apply append dests))])
(set! cached-xref
(load-xref (map (lambda (dest)
(lambda ()
(with-handlers ([exn:fail?
(lambda (exn)
(fprintf (current-error-port)
"WARNING: ~a\n"
(if (exn? exn)
(exn-message exn)
(format "~e" exn)))
#f)])
(let ([r (with-input-from-file dest read)])
(cadr r)))))
dests)))
cached-xref))))