08-21-2008
substituting one string for another
I have a Linux C program I'm writing that has one section where, within a large string, I need to substitute a smaller string for another, and those probably won't be the same size.
For instance, if I have a string:
"Nowisthetimeforallgoodmen"
and I want to substitute 'most' for 'all' the main string will increase in size:
"Nowisthetimeformostgoodmen"
or a substitution that will increase the size of the main string:
"Nowisthetimefornogoodmen"
I thought I might get some opinions about what might be the best approach on something like this, besides some more cumbersome way of doing it. I've been looking at the C string functions to see if there's one that might be helpful, but I don't really see any.
Any help would be appreciated.
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LEARN ABOUT DEBIAN
regsub
regsub(3tcl) Tcl Built-In Commands regsub(3tcl)
__________________________________________________________________________________________________________________________________________________
NAME
regsub - Perform substitutions based on regular expression pattern matching
SYNOPSIS
regsub ?switches? exp string subSpec ?varName?
_________________________________________________________________
DESCRIPTION
This command matches the regular expression exp against string, and either copies string to the variable whose name is given by varName or
returns string if varName is not present. (Regular expression matching is described in the re_syntax reference page.) If there is a
match, then while copying string to varName (or to the result of this command if varName is not present) the portion of string that matched
exp is replaced with subSpec. If subSpec contains a "&" or "