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Zhiroc
Adept
Joined: 04 Feb 2005
Posts: 246
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 Posted: Wed Apr 12, 2006 2:44 am
Using a stringlist in %subregex
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I can't seem to get a %subregex working where I have stringlist variable embedded in the regex:
| Code: |
#VAR tmp1 {aaa bbb ccc ddd}
#VAR tmp2 {bbb|ddd}
#show {1> @tmp1}
#show {2> @tmp2}
#show {3> %subregex( @tmp1, "(bbb|ddd)", "***")}
#show {4> %subregex( @tmp1, "(@tmp2)", "***")}
#show {5> %subregex( @tmp1, (@tmp2), "***")}
#show {6> %subregex( @tmp1, %expand( (@tmp2)), "***")} |
gives
| Code: |
1> aaa bbb ccc ddd
2> bbb|ddd
3> aaa *** ccc ***
4> aaa bbb ccc ddd
5> aaa bbb ccc ddd
6> aaa bbb ccc ddd |
Any ideas what I'm doing wrong? |
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MattLofton
GURU
Joined: 23 Dec 2000
Posts: 4834
Location: USA
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Posted: Wed Apr 12, 2006 5:28 am
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Try taking out the parentheses. While ZMud uses them to keep track of nested lists, I believe they get removed when referencing that element. Thus, "(bbb|ddd)" is exactly the same as "bbb|ddd".
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_________________
EDIT: I didn't like my old signature |
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Zhiroc
Adept
Joined: 04 Feb 2005
Posts: 246
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Posted: Wed Apr 12, 2006 6:59 am
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Added:
| Code: |
#show {7> %subregex( @tmp1, "bbb|ddd", "***")}
#show {8> %subregex( @tmp1, @tmp2, "***")} |
but still got:
| Code: |
7> aaa *** ccc ***
8> aaa bbb ccc ddd |
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Larkin
Wizard
Joined: 25 Mar 2003
Posts: 1113
Location: USA
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Posted: Wed Apr 12, 2006 2:12 pm
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This is a good example of the difference between expanding values with %expand and expanding them with <>. If you enable <> expansion in your preferences, you can then force the expansion in your function. (Actually, my test shows that you don't even have to enable the expansion for this to work. Is that a bug or an undocumented feature? ;) )
| Code: |
| #show %subregex(@tmp1, "(<@tmp2>)", "***") |
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Zhiroc
Adept
Joined: 04 Feb 2005
Posts: 246
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Posted: Wed Apr 12, 2006 3:42 pm
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OK, yes that works. Perhaps the problem is that the string is "compiled" by the script, and not parsed by %subregex() at runtime? So, substitutions have to take place before this is done (which the <> does), but using functions happens "too late". Thus the following doesn't work, even though it produces the correct string:
| Code: |
#show {Aa> %concat( "(", %expand( @tmp2), ")")}
#show {A> %subregex( @tmp1, %concat( "(", %expand( @tmp2), ")"), "***")} |
| Code: |
Aa> (bbb|ddd)
A> aaa bbb ccc ddd
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