/[pcre]/code/trunk/pcrecpp_unittest.cc
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revision 86 by nigel, Sat Feb 24 21:40:59 2007 UTC revision 87 by nigel, Sat Feb 24 21:41:21 2007 UTC
# Line 348  static void TestMatchNumberPeculiarity() Line 348  static void TestMatchNumberPeculiarity()
348    CHECK_EQ(a, "");    CHECK_EQ(a, "");
349  }  }
350    
351  static void TestRecursion(int size, const char *pattern, int match_limit) {  static void TestRecursion() {
352    printf("Testing recursion\n");    printf("Testing recursion\n");
353    
354    // Fill up a string repeating the pattern given    // Get one string that passes (sometimes), one that never does.
355    string domain;    string text_good("abcdefghijk");
356    domain.resize(size);    string text_bad("acdefghijkl");
357    int patlen = strlen(pattern);  
358    for (int i = 0; i < size; ++i) {    // According to pcretest, matching text_good against (\w+)*b
359      domain[i] = pattern[i % patlen];    // requires match_limit of at least 8192, and match_recursion_limit
360    }    // of at least 37.
361    // Just make sure it doesn't crash due to too much recursion.  
362    RE_Options options;    RE_Options options_ml;
363    options.set_match_limit(match_limit);    options_ml.set_match_limit(8192);
364    RE re("([a-zA-Z0-9]|-)+(\\.([a-zA-Z0-9]|-)+)*(\\.)?", options);    RE re("(\\w+)*b", options_ml);
365    re.FullMatch(domain);    CHECK(re.PartialMatch(text_good) == true);
366      CHECK(re.PartialMatch(text_bad) == false);
367      CHECK(re.FullMatch(text_good) == false);
368      CHECK(re.FullMatch(text_bad) == false);
369    
370      options_ml.set_match_limit(1024);
371      RE re2("(\\w+)*b", options_ml);
372      CHECK(re2.PartialMatch(text_good) == false);   // because of match_limit
373      CHECK(re2.PartialMatch(text_bad) == false);
374      CHECK(re2.FullMatch(text_good) == false);
375      CHECK(re2.FullMatch(text_bad) == false);
376    
377      RE_Options options_mlr;
378      options_mlr.set_match_limit_recursion(50);
379      RE re3("(\\w+)*b", options_mlr);
380      CHECK(re3.PartialMatch(text_good) == true);
381      CHECK(re3.PartialMatch(text_bad) == false);
382      CHECK(re3.FullMatch(text_good) == false);
383      CHECK(re3.FullMatch(text_bad) == false);
384    
385      options_mlr.set_match_limit_recursion(10);
386      RE re4("(\\w+)*b", options_mlr);
387      CHECK(re4.PartialMatch(text_good) == false);
388      CHECK(re4.PartialMatch(text_bad) == false);
389      CHECK(re4.FullMatch(text_good) == false);
390      CHECK(re4.FullMatch(text_bad) == false);
391  }  }
392    
393  //  //
# Line 1021  int main(int argc, char** argv) { Line 1046  int main(int argc, char** argv) {
1046      CHECK(!re.error().empty());      CHECK(!re.error().empty());
1047    }    }
1048    
1049    // Test that recursion is stopped: there will be some errors reported    // Test that recursion is stopped
1050    int matchlimit = 5000;    TestRecursion();
   int bytes = 15 * 1024;  // enough to crash if there was no match limit  
   TestRecursion(bytes, ".", matchlimit);  
   TestRecursion(bytes, "a", matchlimit);  
   TestRecursion(bytes, "a.", matchlimit);  
   TestRecursion(bytes, "ab.", matchlimit);  
   TestRecursion(bytes, "abc.", matchlimit);  
1051    
1052    // Test Options    // Test Options
1053    if (getenv("VERBOSE_TEST") != NULL)    if (getenv("VERBOSE_TEST") != NULL)
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