Trying to match a text using regexp and foreach

问题

I am using the following code to match a text like cell ("acf12bcjd6"). The values inside the quotes keep changing and I have to capture all of them. The code I used is:

foreach searched_data $final {   
    [regexp {cell\(.*\)+} $searched_data match]   
    puts "$match"   
}

But I am getting an error saying "can't reach match, no such variable". I do not understand my mistake. Am I doing it correct?

回答1:

Your program is failing because the regexp pattern isn't matching the string, so match isn't being set. Try this

foreach searched_data $final {
    if {[regexp {cell +\(\"(.*)\"\)} $searched_data junk match]} {
        puts stdout $match
    }
}

The pattern assumes that the space between cell and the opening bracket is optional. I also assume you want the quotation marks stripped away.

回答2:

Try to use this instead:

foreach searched_data $final {   
    set match [regexp {cell ?\([^)]*\)} $searched_data]   
    puts "$match"   
}

来源：https://stackoverflow.com/questions/17436835/trying-to-match-a-text-using-regexp-and-foreach