Hi Alex,
Very interesting thoughts :-)
Above all about search and replace strings with the same length (I
remember a thread about that lately).
But there is still a problem of security:
It's the user who specifies the string and he can specify fa (then he
will be a musician :-) or nt (then will be an old Win man :-)
Another trick should be to allow only patterns with 3 chars or
more... to ensure your solution ;-)
Best Regards from Paris,
Eric Chatonet.
Le 17 nov. 05 à 22:19, Alex Tweedly a écrit :
Eric Chatonet wrote:
Hi all,
I want to change the colour of a string in some styled text.
As the string may be any string like "font", "size", etc. that
appear in html tags,
I use the following code that works but I'm not satisfied with it...
Any more elegant solution?
Thanks.
Some thoughts - to use on their own, or in combination - or not at
all, since they are far short of "elegance"
In fact, you might feel these sacrifice elegance for speed - that's
a habit of mine :-)
Basically what you are doing is
a set of "replace"s to hide html tags
the real replace
a set of "replace"s to restore the html tags.
Thought 1. Simplify the 3rd set of replaces, by doing
put numToChar(3) into c3
replace "<font" with "<fo" & c3 & "nt" in tText
replace "face=" with "fa"&c3&"ce=" in tText
etc. -- i.e. put a single c3 character into the middle of each
html tag
then do the real replace, and then
replace c3 with empty in tText
Thought 2. There is a speed optimization to replace a sub-string
by another sub-string *of the same length*.
AND note that the tags to be replaced all contain either "e" or
"o", so
put numToChar(3) into c3 -- to replace o
put numToChar(8) into c8 -- to replace e
replace "<font" with "<f" & c3 & "nt" in tText
replace "face=" with "fac" & c8 & "=" in tText
replace "size=" with "siz" & c8 & "=" in tText
etc.
then do the real replace, and then
replace c3 with "o" in tText
replace c8 with "e" in tText
Thought 3. Use a list of replacements, in a script local variable.
local lReplacements = \
"<font" & comma & "<f" & c3 & "nt" & cr \
"face=" & comma & "fac" & c8 & "=" & cr \
"size=" & comma &"siz" & c8 & "=" & cr \
"color=" with "c" & c3 & "lor=" & cr \
"</font>" with "</f" & c3 & "nt>"
Then do
repeat for each line L in lReplacements
replace item 1 of L with item 2 of L in tText
end repeat
do the real replace
replace c3 with "o" in tText
replace c8 with "e" in tText
--
Alex Tweedly http://www.tweedly.net
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