[REBOL] BUILD-MARKUP Function
From: oliva::david::seznam::cz at: 5-Aug-2002 9:07
Hello Carl,
Saturday, August 3, 2002, 6:08:19 AM, you wrote:
CaR> Some of the changes include:
CaR> Added BUILD-MARKUP Function
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 2 skip | copy value to end] (eval value)
| copy value [to mstart | to end] (append out value)
]
]
out
]
so we can choose starting and ending tags:
>> build-markup {now is: <%now%>}
== "now is: 5-Aug-2002/8:47:53+2:00"
>> build-markup/with {now is: <#now#>} "<#" "#>"
== "now is: 5-Aug-2002/8:55:01+2:00"
You may think, that it's not usefull, but what if someone want to preprocess
some PHP or ASP code where the default tags (<% %>) are used as well?
But maybe nobody will need it and if someone will need it, may replace
the build-markup function with this one or other:-)
--oldes
