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Scheduler: allow negation of regular expressions in plan class XML specs (standard) #4529

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Scheduler: allow negation of regular expressions in plan class XML specs (standard) #4529

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8 changes: 6 additions & 2 deletions sched/plan_class_spec.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -33,13 +33,17 @@ int REGEX_CLAUSE::init(const char* p) {
present = true;
negate = false;
expr = p;
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Here copy constructor will be called

if (*p == '!') {
p++;
if (!strncmp(p,"(?!",3) && p[strlen(p)-1] == ')') {
p += 3;
p[strlen(p)-1] = '\0'; // don't parse trailing ')'
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At this point data at expr will not be changed, because you're modifying the original data piece that has nothing common with expr at all.
If this is done by intention - then it's fine.

negate = true;
}
if (regcomp(&regex, p, REG_EXTENDED|REG_NOSUB) ) {
return ERR_XML_PARSE;
}
if (negate) {
p[strlen(p)] = ')'; // restore trailing ')'
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Here the same as above: data stored in expr will not be modified.

}
return 0;
}

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