FileList.cpp

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#include <string>
#include <list>
#include <iostream>
#include <pcre.h>

#include <epicsExport.h>

#include <utilities.h>

epicsShareFunc int getFileList(const std::string& dirBase, std::list<std::string>& files)
{
        struct dirent *pDirent;
        DIR *pDir;
        files.clear();

        pDir = opendir(dirBase.c_str());

    if (pDir == NULL) {
                std::cerr << "Cannot open directory: " << dirBase << std::endl;
        return -1;
    }

        //First two files may be '.' and '..' so skip
        std::string read = readdir(pDir)->d_name;
        if (read != ".")
        {
                files.push_back(read);
        }else{
                readdir(pDir);
        }

    while ( (pDirent = readdir(pDir)) != NULL ) 
        {
       files.push_back(pDirent->d_name);
    }
    closedir (pDir);

        return files.size();

}
        

epicsShareFunc int filterList(std::list<std::string>& items, const std::string& regex)
{
        pcre *re;
        const char *error;
        int erroffset;

        re = pcre_compile(
          regex.c_str(),              /* the pattern */
          0,                    /* default options */
          &error,               /* for error message */
          &erroffset,           /* for error offset */
          NULL);                /* use default character tables */

        if (re == NULL)
        {
                std::cerr << "PCRE compilation failed" << std::endl;
                return -1;
        }

        for (std::list<std::string>::iterator it = items.begin(); it != items.end(); )
        {
                std::string& item = *it; 
                if(pcre_exec(re, NULL, item.c_str(), static_cast<int>(item.length()), 0, 0, NULL, NULL) < 0)
                        it = items.erase(it);
                else
                        ++it;
        }

        return 0;
}