file name matching with wildcard

Question

I need to implement something like my own file system. One operation would be the FindFirstFile. I need to check, if the caller passed something like ., sample*.cpp

Answer 1

For wildcard name matching using '*' and '?' try this (if you want to avoid boost, use std::tr1::regex):

#include 
#include 

using std::string;

bool MatchTextWithWildcards(const string &text, string wildcardPattern, bool caseSensitive /*= true*/)
{
    // Escape all regex special chars
    EscapeRegex(wildcardPattern);

    // Convert chars '*?' back to their regex equivalents
    boost::replace_all(wildcardPattern, "\\?", ".");
    boost::replace_all(wildcardPattern, "\\*", ".*");

    boost::regex pattern(wildcardPattern, caseSensitive ? regex::normal : regex::icase);

    return regex_match(text, pattern);
}

void EscapeRegex(string ®ex)
{
    boost::replace_all(regex, "\\", "\\\\");
    boost::replace_all(regex, "^", "\\^");
    boost::replace_all(regex, ".", "\\.");
    boost::replace_all(regex, "$", "\\$");
    boost::replace_all(regex, "|", "\\|");
    boost::replace_all(regex, "(", "\\(");
    boost::replace_all(regex, ")", "\\)");
    boost::replace_all(regex, "{", "\\{");
    boost::replace_all(regex, "{", "\\}");
    boost::replace_all(regex, "[", "\\[");
    boost::replace_all(regex, "]", "\\]");
    boost::replace_all(regex, "*", "\\*");
    boost::replace_all(regex, "+", "\\+");
    boost::replace_all(regex, "?", "\\?");
    boost::replace_all(regex, "/", "\\/");
}