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path.scm
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path.scm
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(library (http uri path)
(export path
path-abempty
path-absolute
(rename (path-absolute abs_path))
path-noscheme
path-rootless
path-empty)
(import (except (rnrs (6)) /)
(http abnf)
(http uri basic-rule))
;;; 3.3. Path
(define / (char->rule #\/))
;; segment = *pchar
(define segment (rep* pchar))
;; segment-nz = 1*pchar
(define segment-nz (rep+ pchar))
;; segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" )
;; ; non-zero-length segment without any colon ":"
(define segment-nz-nc (rep+ (bar unreserved pct-encoded sub-delims (char->rule #\@))))
(define path-abempty (rep* (seq / segment)))
(define path-absolute
(seq (char->rule #\/)
(opt (seq segment-nz (rep* (seq / segment))))))
(define path-noscheme
(seq segment-nz-nc (rep* (seq / segment))))
(define path-rootless
(seq segment-nz (rep* (seq / segment))))
(define (path-empty s failure success)
(success '() '()))
(define path
(bar path-abempty path-absolute path-noscheme path-rootless path-empty))
)