[rebol [
title: "%a*file? , wildcards with parse demo"
file: %wildcards.r date: 27-Mar-2001 author: "volker"
purpose: {
compile *? -style wildcards to parse-expression.
workaround for the find/match/case/any -bug.
also usable for sub-expressions in parse-patterns
}
]
the-test: :do ;switch test on
;the-test: none
wildcards: func [file
/local before-tail fix-pending-thru kpt append-pattern ap pattern
] [
pattern: copy []
ap: append-pattern: func [p] [if none <> p [append pattern p]]
kpt: fix-pending-thru: func [replacement] [
before-tail: back tail pattern
if 'thru = before-tail/1 [
insert remove before-tail replacement
]
]
parse to string! file [
any [
copy p to "*" (ap p kpt [] ap [thru]) skip |
copy p to "?" (ap p kpt [] ap [skip]) skip
]
copy p to end (ap p)
]
kpt [to end]
pattern
]
matching-wildcard: func [file block
/local pattern matching
] [
matching: copy []
pattern: wildcards file
foreach f block [
if parse/case to string! f pattern [append matching f]
]
matching
]
;------------------
the-test [
test: func [file] [
matching: matching-wildcard file test-cases
not-matching: exclude/case test-cases matching
? file
? pattern
? matching
? not-matching
print ""
]
test-all: func [block] [
foreach pat block [test pat]
]
test-cases: [%a %ab %aba %abc %ac %aB %AbC %And-So-On]
;test-cases: read %.
? test-cases
test-all [
%* %a??b %a**b %a*?b %a?*b %?
%abc %A* %C* %*C*
%a*b*c %*a %*a* %*a*c* %ab*
%*A*S*O*
]
]
]
--
To unsubscribe from this list, please send an email to
[EMAIL PROTECTED] with "unsubscribe" in the
subject, without the quotes.
