You can work out exactly what you want if you realize that the result
of "the selectedChunk" is always char <chartPosition> to <endPosition>
of field <n>, and this will be as you would expect if the selection is
not empty:
ie, in "this is a sample string of text" in field 1, selecting the
characters "is a sample" would result in a selectedchunk of "char 6 to
16 of field 1"
in which case the number of words of char 1 to (word 2 of the
selectedchunk) of field 1 would be:
the number of words of char 1 to 6 of field 1,
ie, the number of words of "this i"
which is 2
and if the selection is empty then indeed the selectedchunk is always
of the form "char <n> to <n-1> of field 1":
So putting the insertion point before "is" in the above example would
result in a selectedchunk of
"char 6 to 5 of field 1"
and therefore the number of words of char 1 to (word 2 of the
selectedchunk) of field 1 would be
the number of words of char 1 to 5 of field 1,
ie, the number of words of "this "
which is 1
On Sep 27, 2010, at 1:53 PM, Mike Bonner wrote:
Nevermind. *sigh* Number of words prior to selection or insertion
point is
put the number of words of (char 1 to (word 2 of the
selectedchunk) of
field 1)
Rev is far more amazing than I can make it be. So is Livecode!
Yes indeed. Once you get the hang of chunk expressions you can do
*lots* of things -- auto-format phone numbers, insert boilerplate at
particular points in a field, extract specific information from a
field or other container, etc. I have a little function to get the zip
code for an address by sending the address to google maps, fetching
the htmltext of the resulting URL, parsing it to get the zip code from
the middle of the htmltext, and returning the zip -- all behind the
scenes without displaying the webpage. Takes less than a second with a
fast internet connection, the zip code is inserted after the address,
and the user never needs to know what goes on behind the scenes.
On Mon, Sep 27, 2010 at 11:50 AM, Mike Bonner <bonnm...@gmail.com>
wrote:
Ok thats cool.
So if its NOT just an insertion point then
the number of words of char 1 to (word 2 of the selectedchunk) of
field
"yourfield"
will give the number of words preceeding the selection?
Yes, but see above -- it would include the word that starts the
selection.
So this whole thing could boil down to
on mouseUp
if word 4 of the selectedchunk < word 2 of the selectedchunk then
put the number of words of (char 1 to (word 4 of the
selectedchunk)
of field 1)
else
put the number of words of (char 1 to (word 2 of the
selectedchunk)
of field 1)
end if
end mouseUp
Pretty much.
I knew I was making my solution WAY too difficult. Thanks for this.
No problem.
Check out the dictionary entries for not only selectedchunk but also
offset, wordoffset, itemoffset, and related terms, then do some
experimentation. Text parsing in Rev, er, LiveCode, is very powerful.
-- Peter
Peter M. Brigham
pmb...@gmail.com
http://home.comcast.net/~pmbrig
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