381d9d84d6
For now, "METADATA.rktd" is still recognized as a fallback. Also, rewrite package source type and name inference, make ".zip" the default format for `raco pkg create', and many doc edits.
104 lines
3.7 KiB
Racket
104 lines
3.7 KiB
Racket
#lang racket/base
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(require racket/list
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net/url)
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(provide package-source->name+type
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package-source->name)
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(define rx:package-name #rx"^[-_a-zA-Z0-9]+$")
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(define rx:archive #rx"[.](plt|zip|tar|tgz|tar[.]gz)$")
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(define (validate-name name)
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(and name
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(regexp-match? rx:package-name name)
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name))
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(define (extract-archive-name name+ext)
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(validate-name
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(path->string
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(if (regexp-match #rx#"[.]tar[.]gz$" (if (path? name+ext)
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(path->bytes name+ext)
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name+ext))
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(path-replace-suffix (path-replace-suffix name+ext #"") #"")
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(path-replace-suffix name+ext #"")))))
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(define (last-non-empty p)
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(cond
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[(null? p) #f]
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[else (or (last-non-empty (cdr p))
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(and (not (equal? "" (path/param-path (car p))))
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(car p)))]))
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(define (package-source->name+type s type)
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;; returns (values inferred-name inferred-type);
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;; if `type' is given it should be returned, but name can be #f;
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;; type should not be #f for a non-#f name
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(cond
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[(if type
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(eq? type 'name)
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(regexp-match? rx:package-name s))
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(values (and (regexp-match? rx:package-name s) s) 'name)]
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[(and (eq? type 'github)
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(not (regexp-match? #rx"^github://" s)))
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(package-source->name+type
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(string-append "github://github.com/" s)
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'github)]
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[(if type
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(or (eq? type 'github)
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(eq? type 'file-url)
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(eq? type 'dir-url))
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(regexp-match? #rx"^(https?|github)://" s))
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(define url (with-handlers ([exn:fail? (lambda (exn) #f)])
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(string->url s)))
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(define-values (name name-type)
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(if url
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(let ([p (url-path url)])
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(cond
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[(if type
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(eq? type 'github)
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(equal? (url-scheme url) "github"))
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(define name
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(and (pair? p)
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(let ([p (if (equal? "" (path/param-path (last p)))
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(reverse (cdr (reverse p)))
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p)])
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(and ((length p) . >= . 3)
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(validate-name
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(if (= (length p) 3)
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(path/param-path (second (reverse p)))
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(path/param-path (last-non-empty p))))))))
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(values name (or type (and name 'github)))]
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[(if type
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(eq? type 'file-url)
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(and (pair? p)
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(regexp-match? rx:archive (path/param-path (last p)))))
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(values (and (pair? p)
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(extract-archive-name (path/param-path (last-non-empty p))))
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'file-url)]
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[else
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(values (validate-name (path/param-path (last-non-empty p))) 'dir-url)]))
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(values #f #f)))
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(values (validate-name name) (or type (and name name-type)))]
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[(and (not type)
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(regexp-match? #rx"^[a-zA-Z]*://" s))
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(values #f #f)]
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[(if type
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(eq? type 'file)
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(and (path-string? s)
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(regexp-match rx:archive s)))
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(define-values (base name+ext dir?) (split-path s))
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(define name (extract-archive-name name+ext))
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(values name 'file)]
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[(if type
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(or (eq? type 'dir) (eq? type 'link))
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(path-string? s))
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(define-values (base name dir?) (split-path s))
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(define dir-name (and (path? name) (path->string name)))
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(values (validate-name dir-name) (or type (and dir-name 'dir)))]
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[else
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(values #f #f)]))
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(define (package-source->name s)
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(define-values (name type) (package-source->name+type s #f))
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name)
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