PeerStreamer

void ff_make_absolute_url(char *buf, int size, const char *base,

                          const char *rel)

{

    char *sep;

    /* Absolute path, relative to the current server */

    if (base && strstr(base, "://") && rel[0] == '/') {

        if (base != buf)

            av_strlcpy(buf, base, size);

        sep = strstr(buf, "://");

        if (sep) {

            sep += 3;

            sep = strchr(sep, '/');

            if (sep)

                *sep = '\0';

        }

        av_strlcat(buf, rel, size);

        return;

    }

    /* If rel actually is an absolute url, just copy it */

    if (!base || strstr(rel, "://") || rel[0] == '/') {

        av_strlcpy(buf, rel, size);

        return;

    }

    if (base != buf)

        av_strlcpy(buf, base, size);

    /* Remove the file name from the base url */

    sep = strrchr(buf, '/');

    if (sep)

        sep[1] = '\0';

    else

        buf[0] = '\0';

    while (av_strstart(rel, "../", NULL) && sep) {

        /* Remove the path delimiter at the end */

        sep[0] = '\0';

        sep = strrchr(buf, '/');

        /* If the next directory name to pop off is "..", break here */

        if (!strcmp(sep ? &sep[1] : buf, "..")) {

            /* Readd the slash we just removed */

            av_strlcat(buf, "/", size);

            break;

        }

        /* Cut off the directory name */

        if (sep)

            sep[1] = '\0';

        else

            buf[0] = '\0';

        rel += 3;

    }

    av_strlcat(buf, rel, size);

}