The call operator also returns an iterator pointing to the first occurence of the pattern. Both are dedicated string search algorithms, and they share the same interface, the constructor takes a pair of iterators for the search pattern, the operator() a pair of iterators for the search able text. For both algorithms it is true, that the search gets faster with a longer search term. While boost::regex is the library that was the blueprint for std::regex, boost::xpressive allows you to create regular expressions as C code, they are then checked at compile time! If my search pattern would be slightly more complex, I would have used boost::xpressive to search and replace my links in the HTML text.īut as my search pattern is not really complex, and I am actually could be searching for "[linkid:", there is an alternative: boost::boyer_moore and boost::boyer_moore_horspool. For my use case, boyer_moore_horspool is better, as it has less inner complexity then boyer_moore, and the string I am searching is short. This could be done with a regex, "(\\) (\\])", and boost offers great support for regular expressions via boost::regex and boost::xpressive. This is to have still the correct link, if the page is renamed or moved. A link to a different page in the same website cannot be represented as a text link, instead it is represented by a linkid, which corresponds to the Page it points to. There needs to be a lot of text transformed, in order to turn a shared structure like a cross page layout into a single, special HTML file, one of those transformations is, to replace the internal links with the correct links. As I started last week with implementing the functionality, that turns the data in my CMS into an HTML website. ![]() This blog post is about searching and replacing in strings. I'll reach it in the next two weeks, most code is written, just a little bit of refactoring is needed. The next big milestone for my CMS is to actually generate HTML files, and I'm almost there. Searching and replacing in strings with boost
0 Comments
Leave a Reply. |