Forum OpenACS Q&A: How do I parse a string of the form "some @var_1@ text @var_2@ here" where the var_i's are stored in a tcl array or elsewhere?

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1: How do I parse a string of the form "some @var_1@ text @var_2@ here" where the var_i's are stored in a tcl array or elsewhere?
Posted by Jim Lynch on 04/30/06 07:08 AM
I'm trying to write a flexible log message generator with callbacks which provide named pieces of the log messages, which get included in the final log message if they appear in a format string.
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2: Re: How do I parse a string of the form "some @var_1@ text @var_2@ here" where the var_i's are stored in a tcl array or elsewhere? (response to 1)
Posted by Gustaf Neumann on 04/30/06 12:22 PM
The most simple approach is most probably this:

  set dict(@var_1@) substituted
  set dict(@var_2@) appears
  set string "some @var_1@ text @var_2@ here"
  puts [string map [array get dict] $string]

which prints out "some substituted text appears here"

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3: Re: Re: How do I parse a string of the form "some @var_1@ text @var_2@ here" where the var_i's are stored in a tcl array or elsewhere? (response to 2)
Posted by Jim Lynch on 05/04/06 09:41 PM
Gustaf:

Thanks! I used this approach almost exactly; works fine!