/usr/share/racket/collects/pkg/strip.rkt is in racket-common 6.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(require compiler/cm
setup/getinfo
setup/dirs
syntax/modread
racket/match
racket/file
racket/path
racket/list
racket/set)
(provide generate-stripped-directory
fixup-local-redirect-reference
strip-binary-compile-info)
(define strip-binary-compile-info (make-parameter #t))
(define (generate-stripped-directory mode dir dest-dir)
(define drop-keep-ns (make-base-namespace))
(define (add-drop+keeps dir base drops keeps)
(define get-info (get-info/full dir #:namespace drop-keep-ns))
(define (get-paths tag)
(define l (if get-info
(get-info tag (lambda () null))
null))
(unless (and (list? l) (andmap (lambda (p)
(and (path-string? p)
(relative-path? p)))
l))
(error 'strip "bad ~a value from \"info.rkt\": ~e" tag l))
l)
(define (intersect l1 l2)
(set->list (set-intersect (list->set l1) (list->set l2))))
(define (union l1 l2)
(set->list (set-union (list->set l1) (list->set l2))))
(define more-drops
(case mode
[(source) (get-paths 'source-omit-files)]
[(binary) (get-paths 'binary-omit-files)]
[(built)
(intersect (get-paths 'source-omit-files)
(get-paths 'binary-omit-files))]))
(define more-keeps
(case mode
[(source) (get-paths 'source-keep-files)]
[(binary) (get-paths 'binary-keep-files)]
[(built)
(union (get-paths 'source-keep-files)
(get-paths 'binary-keep-files))]))
(define (add ht l)
(for/fold ([ht ht]) ([i (in-list l)])
(hash-set ht
(if (eq? base 'same)
(if (path? i) i (string->path i))
(build-path base i))
#t)))
(values (add drops more-drops)
(add keeps more-keeps)))
(define (drop-by-default? path get-p)
(define bstr (path->bytes path))
(define (immediate-doc/css-or-doc/js?)
;; Drop ".css" and ".js" immediately in a "doc" directory:
(and (regexp-match? #rx#"(?:[.]css|[.]js)$" bstr)
(let-values ([(base name dir?) (split-path (get-p))])
(and (path? base)
(let-values ([(base name dir?) (split-path base)])
(and (path? name)
(equal? #"doc" (path-element->bytes name))))))))
(or (regexp-match? #rx#"^(?:[.]git.*|[.]svn|.*~|#.*#)$"
bstr)
;; can appear as a marker in rendered documentation:
(equal? #"synced.rktd" bstr)
(case mode
[(source)
(regexp-match? #rx#"^(?:compiled|doc)$" bstr)]
[(binary)
(or (regexp-match? #rx#"^(?:tests|scribblings|.*(?:[.]scrbl|[.]dep|_scrbl[.]zo))$"
bstr)
(and (regexp-match? #rx"[.](?:ss|rkt)$" bstr)
(not (equal? #"info.rkt" bstr))
(file-exists? (let-values ([(base name dir?) (split-path (get-p))])
(build-path base "compiled" (path-add-suffix name #".zo")))))
(immediate-doc/css-or-doc/js?)
;; drop these, because they're recreated on fixup:
(equal? #"info_rkt.zo" bstr)
(equal? #"info_rkt.dep" bstr))]
[(built)
(immediate-doc/css-or-doc/js?)])))
(define (keep-override-by-default? path dir)
(case mode
[(binary)
(define bstr (path->bytes path))
(define (path-elements)
(if (eq? dir 'base)
null
(map path-element->bytes (explode-path dir))))
(cond
[(or (equal? bstr #"doc")
(equal? bstr #"info.rkt"))
;; Keep "doc" and "info.rkt" (that might be for
;; documentation) when under "scribblings" and not under
;; "tests":
(define l (path-elements))
(and (member #"scribblings" l)
(not (member #"tests" l)))]
[else #f])]
[else #f]))
(define (fixup new-p path src-base level)
(unless (eq? mode 'source)
(define bstr (path->bytes path))
(cond
[(regexp-match? #rx"[.]html$" bstr)
(fixup-html new-p)]
[(and (eq? mode 'binary)
(equal? #"info.rkt" bstr))
(fixup-info new-p src-base level)]
[(and (eq? mode 'binary)
(regexp-match? #rx"[.]zo$" bstr))
(fixup-zo new-p)])))
(define (explore base ; containing directory relative to `dir`, 'base at start
paths ; paths in `base'
drops ; hash table of paths (relative to start) to drop
keeps ; hash table of paths (relative to start) to keep
drop-all-by-default? ; in dropped directory?
level) ; 'package, 'collection, or 'subcollection
(define next-level (case level
[(package) 'collection]
[else 'subcollection]))
(for ([path (in-list paths)])
(define p (if (eq? base 'same)
path
(build-path base path)))
(define keep? (and (not (hash-ref drops p #f))
(or (hash-ref keeps p #f)
(and drop-all-by-default?
(keep-override-by-default?
path
base))
(not (or drop-all-by-default?
(drop-by-default?
path
(lambda () (build-path dir p))))))))
(define old-p (build-path dir p))
(define new-p (build-path dest-dir p))
(cond
[(and keep? (file-exists? old-p))
(when drop-all-by-default?
(make-directory* (path-only new-p)))
(copy-file old-p new-p)
(file-or-directory-modify-seconds
new-p
(file-or-directory-modify-seconds old-p))
(fixup new-p path base level)]
[(directory-exists? old-p)
(define-values (new-drops new-keeps)
(add-drop+keeps old-p p drops keeps))
(when keep?
(if drop-all-by-default?
(make-directory* new-p)
(make-directory new-p)))
(explore p
(directory-list old-p)
new-drops
new-keeps
(not keep?)
next-level)]
[keep? (error 'strip "file or directory disappeared?")]
[else (void)])))
(define-values (drops keeps)
(add-drop+keeps dir 'same #hash() #hash()))
(define level
(let ([i (get-info/full dir #:namespace drop-keep-ns)])
(cond
[(or (not i)
(not (eq? 'multi (i 'collection (lambda () #t)))))
'collection] ; single-collection package
[else 'package])))
(explore 'same (directory-list dir) drops keeps #f level)
(case mode
[(binary built) (unmove-files dir dest-dir drop-keep-ns)]
[else (void)])
(case mode
[(binary) (assume-virtual dest-dir (eq? level 'collection))]
[else (void)]))
(define (fixup-html new-p)
;; strip full path to "local-[user-]redirect.js"
(fixup-local-redirect-reference new-p ".."))
(define (fixup-zo new-p)
;; strip `test', `srcdoc', and `doc' submodules:
(define mod
(call-with-input-file*
new-p
(lambda (in)
(parameterize ([read-accept-compiled #t])
(read in)))))
(define (filter-mods l)
(filter (lambda (m)
(not (memq (last (module-compiled-name m))
'(test doc srcdoc))))
l))
(define new-mod
(let loop ([mod mod])
(define mod-subs (module-compiled-submodules mod #f))
(define mod*-subs (module-compiled-submodules mod #t))
(define new-mod-subs (map loop (filter-mods mod-subs)))
(define new-mod*-subs (map loop (filter-mods mod*-subs)))
(if (and (equal? mod-subs new-mod-subs)
(equal? mod*-subs new-mod*-subs))
mod
(module-compiled-submodules
(module-compiled-submodules mod
#f
new-mod-subs)
#t
new-mod*-subs))))
(unless (eq? mod new-mod)
(call-with-output-file*
new-p
#:exists 'truncate/replace
(lambda (out) (write new-mod out)))))
(define (fixup-local-redirect-reference p js-path #:user [user-js-path js-path])
;; Relying on this HTML pattern (as generated by Scribble's HTML
;; renderer) is a little fragile. Any better idea?
(define rx #rx"<script type=\"text/javascript\" src=\"([^\"]*)/local-(?:user-)?redirect[.]js\">")
(define ms (call-with-input-file*
p
(lambda (i)
;; search twice to hit normal and user:
(list (regexp-match-positions rx i)
(regexp-match-positions rx i)))))
(define m (car ms))
(define m2 (cadr ms))
(when m
(define start (caadr m))
(define end (cdadr m))
(define bstr (file->bytes p))
(define new-bstr
(bytes-append (subbytes bstr 0 start)
(string->bytes/utf-8 js-path)
(let ([s (subbytes bstr end)])
(cond
[m2
(define delta (- (cdar m) end))
(define start2 (caadr m2))
(define end2 (cdadr m2))
(bytes-append (subbytes s 0 (+ delta start2))
(string->bytes/utf-8 user-js-path)
(subbytes s (+ delta end2)))]
[else s]))))
(call-with-output-file*
p
#:exists 'truncate/replace
(lambda (out) (write-bytes new-bstr out)))))
;; Used in binary mode:
(define (fixup-info new-p src-base level)
(define dir (let-values ([(base name dir?) (split-path new-p)])
base))
;; check format:
(define get-info
(get-info/full dir #:namespace (make-base-namespace)))
(when get-info
;; read in:
(define content
(call-with-input-file*
new-p
(lambda (in)
(begin0
(with-module-reading-parameterization
(lambda () (read in)))))))
;; convert:
(define (convert-mod info-lib defns)
`(module info ,info-lib
(#%module-begin
(define assume-virtual-sources #t)
. ,(filter values
(map (fixup-info-definition get-info) defns)))))
(define new-content
(match content
[`(module info ,info-lib (#%module-begin . ,defns))
(convert-mod info-lib defns)]
;; In case of `(module ...)` instead of `#lang ...`:
[`(module info ,info-lib . ,defns)
(convert-mod info-lib defns)]))
;; write updated:
(call-with-output-file*
new-p
#:exists 'truncate
(lambda (out)
(write new-content out)
(newline out)))
;; sanity check:
(unless (get-info/full dir #:namespace (make-base-namespace))
(error 'pkg-binary-create "rewrite failed"))
;; compile it, if not top level:
(when (strip-binary-compile-info)
(unless (eq? level 'package)
(managed-compile-zo new-p)))))
(define ((fixup-info-definition get-info) defn)
(match defn
[`(define build-deps . ,v) #f]
[`(define assume-virtual-sources . ,v) #f]
[`(define copy-foreign-libs . ,v)
`(define move-foreign-libs . ,v)]
[`(define copy-shared-files . ,v)
`(define move-shared-files . ,v)]
[`(define copy-man-pages . ,v)
`(define move-man-pages . ,v)]
[_ defn]))
(define (unmove-files dir dest-dir metadata-ns)
;; Determine whether any files slated for movement by
;; `move-foreign-libs', etc., have been installed
;; and need to be uninstalled, and copies moved files
;; to `dest-dir'.
(define (unmove-in dir dest-dir)
(for ([f (in-list (directory-list dir))])
(define d (build-path dir f))
(when (directory-exists? d)
(unmove d (build-path dest-dir f)))))
(define (unmove dir dest-dir)
(define info (get-info/full dir #:namespace metadata-ns))
(define (unmove-tag tag find-dir)
(when info
(define l (info tag (lambda () null)))
(for ([f (in-list l)])
(when (and (not (file-exists? (build-path dir f)))
(not (directory-exists? (build-path dir f)))
(or (file-exists? (build-path (find-dir) f))
(directory-exists? (build-path (find-dir) f))))
(copy-directory/files (build-path (find-dir) f)
(build-path dest-dir f))))))
(unmove-tag 'move-foreign-libs find-user-lib-dir)
(unmove-tag 'move-shared-files find-user-share-dir)
(unmove-tag 'move-man-pages find-user-man-dir)
(unmove-in dir dest-dir))
(unmove dir dest-dir))
(define (assume-virtual dest-dir in-collection?)
;; If an "info.rkt" file doesn't exists in a collection,
;; add one so that `assume-virtual-sources` is defined.
(cond
[in-collection?
(define info-path (build-path dest-dir "info.rkt"))
(unless (file-exists? info-path)
(call-with-output-file*
info-path
(lambda (o)
(write `(module info setup/infotab (define assume-virtual-sources #t)) o)
(newline o)))
(when (strip-binary-compile-info)
(managed-compile-zo info-path)))]
[else
(for ([f (in-list (directory-list dest-dir #:build? #t))])
(when (directory-exists? f)
(assume-virtual f #t)))]))
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