charIndex property

[Bob Sneidar]

Offset?

Bob S


> On Jul 26, 2023, at 10:02 AM, Paul Dupuis via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> If I have some text in a field, I can use the "charIndex" property (see Dictionary) to obtain teh character position of the first character of a chunk.
> 
> For example, if the field contains:
> 
> The quick brown fox jumps over the lazy dog. The lazy dog was named "Oz".
> 
> The lazy dog was a great dog.
> 
> Then there are 3 instances of  "lazy dog"
> 
> trueWord 8 to 9 of the field,  11 to 12, and 17 to 18
> 
> You can also determine that first instance "lazy dog" is in sentence 1 to 1 (or just sentence 1) of the field, the 2nd is in sentence 2, and the 3rd in sentence 3
> 
> And you can determine that the first 2 instances are in paragraph 1 and the 3rd instance of "lazy dog" is in paragraph 2 (using the trueWord, sentence, and paragraph chunk types)
> 
> charIndex lets me determine the start of a sentence or paragraph, such as:
> 
> the charIndex of sentence 1 to 1 of fld X --> 1 and the charIndex of sentence 2 of fld X --> 46 and the charIndex of sentence 3 of fld "X" --> 75
> 
> the charIndex of paragraph 1 of fld X --> 1 and the charIndex of paragraph 2 of fld X --> 75
> 
> My question is, charIndex appear to ONLY work on an actual field object (visible or invisible). You get execution errors if you try say:
> 
> put the charIndex of word 8 of the text of the templateField
> 
> put the charIndex of word 8 of the templateField
> 
> put the charIndex of word 8 of tVar
> 
> Does anyone know of a clever way to do the equivalent of the charIndex for an arbitrary chunk expression for a container/variable (i.e. not an actual field object)?
> 
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