[REBOL] Re: BUILD-MARKUP Function
From: al:bri:xtra at: 6-Aug-2002 16:28
RebOldes wrote:
> Nice function, but what about this small improvement:
build-markup: func [
{Return markup text replacing <%tags%> with their evaluated results.}
content [string! file! url!]
/quiet "Do not show errors in the output."
/with {Starting and ending tags - by default it's "<%" and "%>"}
mstart [string!] mend [string!]
/local out eval value
][
content: either string? content [copy content] [read content]
out: make string! 126
if not with [mstart: "<%" mend: "%>"]
eval: func [val /local tmp] [
either error? set/any 'tmp try [do val] [
if not quiet [
tmp: disarm :tmp
append out reform ["***ERROR" tmp/id "in:" val]
]
] [
if not unset? get/any 'tmp [append out :tmp]
]
]
parse/all content [
any [
end break
| mstart [copy value to mend mend | copy value to end] (eval
value)
| copy value [to mstart | to end] (append out value)
]
]
out
]
I've made a slight improvement in the 'parse rule, changing the "2 skip" to
mend
, so as to allow variable length ending tag. Using a fixed length is
asking for trouble! :)
I've sent it to feedback as well.
Andrew Martin
ICQ: 26227169 http://valley.150m.com/
