thin-provisioning-tools/functional-tests/command-line/thin-check.scm

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(library
(command-line thin-check)
(export )
(import (thin thin-check))
(define (help port)
(fmt port
"Usage: thin_check [options] {device|file}\n"
"Options:\n"
" {-q|--quiet}\n"
" {-h|--help}\n"
" {-V|--version}\n"
" {--clear-needs-check-flag}\n"
" {--ignore-non-fatal-errors}\n"
" {--skip-mappings}\n"
" {--super-block-only}\n"))
(define whitespace
(many+ (charset " \t\n")))
(define (whitespace-delim ma)
(>> (opt whitespace)
(<* ma (opt whitespace))))
(define (switch str)
(whitespace-delim (>> (lit "--") (lit str))))
(define (switch-set . syms)
(whitespace-delim
(>> (lit "--")
(apply one-of (map (lambda (s)
(>> (lit (symbol->string s)) (pure s)))
syms)))))
(define (short str)
(whitespace-delim (>> (lit "-") (lit str))))
(define help-command-line
(>> (one-of (switch "help") (switch "h"))
(pure (lambda ()
(help (current-output-port))))))
;; FIXME: move somewhere
(define tools-version "0.8.0")
(define version-command-line
(>> (one-of (short "V") (switch "version"))
(pure (lambda ()
(display tools-version)
(display "\n")))))
(define switches
(many*
(switch-set
'quiet
'clear-needs-check-flag
'ignore-non-fatal-errors
'skip-mappings
'super-block-only)))
(define not-switch
(whitespace-delim
(parse-m
(<- c (neg-charset "- \t"))
(<- cs (many* (neg-charset " \t")))
(pure (list->string (cons c cs))))))
(define main-command-line
(parse-m
(<- ss switches)
(<- path not-switch)
eof
(pure (lambda () (run ss path)))))
(define command-line-parser
(one-of
help-command-line
version-command-line
main-command-line))
(define (bad-command-line)
(fmt (current-error-port) (dsp "bad command line\n"))
(help (current-error-port))
(exit 1))
(define (parse-command-line args)
(receive (v st) (parse command-line-parser
(apply string-append (intersperse " " args)))
((if (success? st) v bad-command-line))))
)