Absolute URL from relative path

Question

I have a base URL and some relative URIs in this document in which I want to have an absolute path.

eg. base = https://example.com/some/path.html?query=string and relative URIs in this document:

• index.html → https://example.com/some/index.html
• .. → https://example.com/
• ../../../../abc → https://example.com/abc
• abc / .. → https://example.com/some/
• //example.org/-05 https://example.org/
• ftp://example.net/ → ftp://example.net/

In Java, you have a URL class :

URL abs = new URL(new URL(basePath), relPath);

But, oddly enough, I can't find a simple C library or function that implements just that.

Is there a library supporting this feature? Or even better is some small stand-alone file that you can use?

Answer 1

You can bet that it has already been written a thousand times in C. For example, for apache.

Here are a few pointers:

libSoup, the http library used by GNOME: http://developer.gnome.org/libsoup/unstable/SoupURI.html#soup-uri-new-with-base

Suggested for Boost libraries: http://cpp-netlib.github.com/

Google itself (part of Chrome?): Http://code.google.com/p/google-url/

One more thing: http://uriparser.sourceforge.net/

W3C: http://www.w3.org/Library/src/HTParse

URL libcamel: http://www.google.com/codesearch#KhbZeNk3OGk/camel/camel-url.c

API- URI, , , URI:

GLib, C: http://developer.gnome.org/glib/unstable/glib-URI-Functions.html

libedataserver ( Evolution) http://developer.gnome.org/libedataserver/stable/libedataserver-e-url.html

GNet, glib addon: http://developer.gnome.org/gnet/stable/gnet-uri.html

Answer 2

Windows CoInternetCombineUrl Urlmon.dll UrlCombine Shlwapi.lib. AFAIK.