Avoid URLs Matching Any of a Set of Patterns

Demonstrates how to use "avoid patterns" to prevent spidering any URL that matches a wildcarded pattern. This example avoids URLs containing the substrings "java", "python", or "perl".

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

#include <C_CkSpider.h>

void ChilkatSample(void)
    {
    HCkSpider spider;
    long i;
    BOOL success;

    //  The Chilkat Spider component/library is free.
    spider = CkSpider_Create();

    //  The spider object crawls a single web site at a time.  As you'll see
    //  in later examples, you can collect outbound links and use them to
    //  crawl the web.  For now, we'll simply spider 10 pages of chilkatsoft.com
    CkSpider_Initialize(spider,"www.chilkatsoft.com");

    //  Add the 1st URL:
    CkSpider_AddUnspidered(spider,"http://www.chilkatsoft.com/");

    //  Avoid URLs matching these patterns:
    CkSpider_AddAvoidPattern(spider,"*java*");
    CkSpider_AddAvoidPattern(spider,"*python*");
    CkSpider_AddAvoidPattern(spider,"*perl*");

    //  Begin crawling the site by calling CrawlNext repeatedly.

    for (i = 0; i <= 9; i++) {

        success = CkSpider_CrawlNext(spider);
        if (success == TRUE) {
            //  Show the URL of the page just spidered.
            printf("%s\n",CkSpider_lastUrl(spider));
            //  The HTML is available in the LastHtml property
        }
        else {
            //  Did we get an error or are there no more URLs to crawl?
            if (CkSpider_getNumUnspidered(spider) == 0) {
                printf("No more URLs to spider\n");
            }
            else {
                printf("%s\n",CkSpider_lastErrorText(spider));
            }

        }

        //  Sleep 1 second before spidering the next URL.
        CkSpider_SleepMs(spider,1000);
    }



    CkSpider_Dispose(spider);

    }