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Diffstat (limited to 'cvs.scm')
| -rw-r--r-- | cvs.scm | 140 |
1 files changed, 140 insertions, 0 deletions
@@ -0,0 +1,140 @@ +;;;;"cvs.scm" enumerate files under CVS control. +;;; Copyright 2002 Aubrey Jaffer +; +;Permission to copy this software, to modify it, to redistribute it, +;to distribute modified versions, and to use it for any purpose is +;granted, subject to the following restrictions and understandings. +; +;1. Any copy made of this software must include this copyright notice +;in full. +; +;2. I have made no warranty or representation that the operation of +;this software will be error-free, and I am under no obligation to +;provide any services, by way of maintenance, update, or otherwise. +; +;3. In conjunction with products arising from the use of this +;material, there shall be no use of my name in any advertising, +;promotional, or sales literature without prior written consent in +;each case. + +(require 'scanf) +(require 'line-i/o) +(require 'string-search) + +;;@body Returns a list of the local pathnames (with prefix @1) of all +;;CVS controlled files in @1 and in @1's subdirectories. +(define (cvs-files directory/) + (cvs:entries directory/ #t)) + +;;@body Returns a list of all of @1 and all @1's CVS controlled +;;subdirectories. +(define (cvs-directories directory/) + (and (file-exists? (in-vicinity directory/ "CVS/Entries")) + (cons directory/ (cvs:entries directory/ #f)))) + +(define (cvs:entries directory do-files?) + (define files '()) + (define cvse (in-vicinity directory "CVS/Entries")) + (define cvsel (in-vicinity directory "CVS/Entries.Log")) + (set! directory (substring directory + (if (eqv? 0 (substring? "./" directory)) 2 0) + (string-length directory))) + (if (file-exists? cvse) + (call-with-input-file cvse + (lambda (port) + (do ((line (read-line port) (read-line port))) + ((eof-object? line)) + (let ((fname #f)) + (cond ((eqv? 1 (sscanf line "/%[^/]" fname)) + (and do-files? + (set! files + (cons (in-vicinity directory fname) files)))) + ((eqv? 1 (sscanf line "D/%[^/]" fname)) + (set! files + (append (cvs:entries (sub-vicinity directory fname) + do-files?) + (if do-files? '() + (list (sub-vicinity directory fname))) + files)))))))) + (slib:warn 'cvs:entries 'missing cvse)) + (set! files (reverse files)) + (if (file-exists? cvsel) + (call-with-input-file cvsel + (lambda (port) + (do ((line (read-line port) (read-line port))) + ((eof-object? line) files) + (let ((fname #f)) + (cond ((eqv? 1 (sscanf line "A D/%[^/]/" fname)) + (set! files + (append files + (if do-files? '() + (list (sub-vicinity directory fname))) + (cvs:entries (sub-vicinity directory fname) + do-files?))))))))) + files)) + +;;@body Returns the (string) contents of @var{path/}CVS/Root; +;;or @code{(getenv "CVSROOT")} if Root doesn't exist. +(define (cvs-root path/) + (if (not (vicinity:suffix? (string-ref path/ (+ -1 (string-length path/))))) + (slib:error 'missing 'vicinity-suffix path/)) + (let ((rootpath (string-append path/ "CVS/Root"))) + (if (file-exists? rootpath) + (call-with-input-file rootpath read-line) + (getenv "CVSROOT")))) + +;;@body Returns the (string) contents of @var{directory/}CVS/Root appended +;;with @var{directory/}CVS/Repository; or #f if @var{directory/}CVS/Repository +;;doesn't exist. +(define (cvs-repository directory/) + (let ((root (cvs-root directory/)) + (repath (in-vicinity (sub-vicinity directory/ "CVS/") "Repository"))) + (define root/idx (substring? "/" root)) + (define rootlen (string-length root)) + (and + root/idx + (file-exists? repath) + (let ((repos (call-with-input-file repath read-line))) + (define replen (and (string? repos) (string-length repos))) + (cond ((not (and replen (< 1 replen))) #f) + ((not (char=? #\/ (string-ref repos 0))) + (string-append root "/" repos)) + ((eqv? 0 (substring? (substring root root/idx rootlen) repos)) + (string-append + root + (substring repos (- rootlen root/idx) replen))) + (else (slib:error 'mismatched root repos))))))) + +;;@body +;;Writes @1 to file CVS/Root of @2 and all its subdirectories. +(define (cvs-set-root! new-root directory/) + (define root (cvs-root directory/)) + (define repos (cvs-repository directory/)) + (if (not repos) (slib:error 'not 'cvs directory/)) + (if (not (eqv? 0 (substring? root repos))) + (slib:error 'bad 'cvs root repos)) + (call-with-output-file + (in-vicinity (sub-vicinity directory/ "CVS") "Root") + (lambda (port) (write-line new-root port))) + (call-with-output-file + (in-vicinity (sub-vicinity directory/ "CVS") "Repository") + (lambda (port) + (write-line + (substring repos (+ 1 (string-length root)) (string-length repos)) + port)))) + +;;@body +;;Signals an error if CVS/Repository or CVS/Root files in @1 or any +;;subdirectory do not match. +(define (cvs-vet directory/) + (define diroot (cvs-root directory/)) + (for-each + (lambda (path/) + (define path/CVS (sub-vicinity path/ "CVS/")) + (cond ((not (cvs-repository path/)) + (slib:error 'bad (in-vicinity path/CVS "Repository"))) + ((not (equal? diroot (cvs-root path/))) + (slib:error 'mismatched 'root (in-vicinity path/CVS "Root"))))) + (or (cvs-directories directory/) (slib:error 'not 'cvs directory/)))) + +;;(define cvs-rsh (or (getenv "CVS_RSH") "rsh")) |