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/*
*
* Copyright (c) 2004
* John Maddock
*
* Use, modification and distribution are subject to the
* Boost Software License, Version 1.0. (See accompanying file
* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*
*/
/*
* LOCATION: see http://www.boost.org for most recent version.
* FILE mfc_example.cpp
* VERSION see <boost/version.hpp>
* DESCRIPTION: examples of using Boost.Regex with MFC and ATL string types.
*/
#ifdef TEST_MFC
#include <boost/regex/mfc.hpp>
#include <cstringt.h>
#include <atlstr.h>
#include <assert.h>
#include <tchar.h>
#include <iostream>
#ifdef _UNICODE
#define cout wcout
#endif
//
// Find out if *password* meets our password requirements,
// as defined by the regular expression *requirements*.
//
bool is_valid_password(const CString& password, const CString& requirements)
{
return boost::regex_match(password, boost::make_regex(requirements));
}
//
// Extract filename part of a path from a CString and return the result
// as another CString:
//
CString get_filename(const CString& path)
{
boost::tregex r(__T("(?:\\A|.*\\\\)([^\\\\]+)"));
boost::tmatch what;
if(boost::regex_match(path, what, r))
{
// extract $1 as a CString:
return CString(what[1].first, what.length(1));
}
else
{
throw std::runtime_error("Invalid pathname");
}
}
CString extract_postcode(const CString& address)
{
// searches throw address for a UK postcode and returns the result,
// the expression used is by Phil A. on www.regxlib.com:
boost::tregex r(__T("^(([A-Z]{1,2}[0-9]{1,2})|([A-Z]{1,2}[0-9][A-Z]))\\s?([0-9][A-Z]{2})$"));
boost::tmatch what;
if(boost::regex_search(address, what, r))
{
// extract $0 as a CString:
return CString(what[0].first, what.length());
}
else
{
throw std::runtime_error("No postcode found");
}
}
void enumerate_links(const CString& html)
{
// enumerate and print all the <a> links in some HTML text,
// the expression used is by Andew Lee on www.regxlib.com:
boost::tregex r(__T("href=[\"\']((http:\\/\\/|\\.\\/|\\/)?\\w+(\\.\\w+)*(\\/\\w+(\\.\\w+)?)*(\\/|\\?\\w*=\\w*(&\\w*=\\w*)*)?)[\"\']"));
boost::tregex_iterator i(boost::make_regex_iterator(html, r)), j;
while(i != j)
{
std::cout << (*i)[1] << std::endl;
++i;
}
}
void enumerate_links2(const CString& html)
{
// enumerate and print all the <a> links in some HTML text,
// the expression used is by Andew Lee on www.regxlib.com:
boost::tregex r(__T("href=[\"\']((http:\\/\\/|\\.\\/|\\/)?\\w+(\\.\\w+)*(\\/\\w+(\\.\\w+)?)*(\\/|\\?\\w*=\\w*(&\\w*=\\w*)*)?)[\"\']"));
boost::tregex_token_iterator i(boost::make_regex_token_iterator(html, r, 1)), j;
while(i != j)
{
std::cout << *i << std::endl;
++i;
}
}
//
// Take a credit card number as a string of digits,
// and reformat it as a human readable string with "-"
// separating each group of four digits:
//
const boost::tregex e(__T("\\A(\\d{3,4})[- ]?(\\d{4})[- ]?(\\d{4})[- ]?(\\d{4})\\z"));
const CString human_format = __T("$1-$2-$3-$4");
CString human_readable_card_number(const CString& s)
{
return boost::regex_replace(s, e, human_format);
}
int main()
{
// password checks using regex_match:
CString pwd = "abcDEF---";
CString pwd_check = "(?=.*[[:lower:]])(?=.*[[:upper:]])(?=.*[[:punct:]]).{6,}";
bool b = is_valid_password(pwd, pwd_check);
assert(b);
pwd = "abcD-";
b = is_valid_password(pwd, pwd_check);
assert(!b);
// filename extraction with regex_match:
CString file = "abc.hpp";
file = get_filename(file);
assert(file == "abc.hpp");
file = "c:\\a\\b\\c\\d.h";
file = get_filename(file);
assert(file == "d.h");
// postcode extraction with regex_search:
CString address = "Joe Bloke, 001 Somestreet, Somewhere,\nPL2 8AB";
CString postcode = extract_postcode(address);
assert(postcode = "PL2 8NV");
// html link extraction with regex_iterator:
CString text = "<dt><a href=\"syntax_perl.html\">Perl Regular Expressions</a></dt><dt><a href=\"syntax_extended.html\">POSIX-Extended Regular Expressions</a></dt><dt><a href=\"syntax_basic.html\">POSIX-Basic Regular Expressions</a></dt>";
enumerate_links(text);
enumerate_links2(text);
CString credit_card_number = "1234567887654321";
credit_card_number = human_readable_card_number(credit_card_number);
assert(credit_card_number == "1234-5678-8765-4321");
return 0;
}
#else
#include <iostream>
int main()
{
std::cout << "<NOTE>MFC support not enabled, feature unavailable</NOTE>";
return 0;
}
#endif
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