Memory-managed wrapper type.

Construct a UriParamsIter struct initialized to zero.

Initializes an attribute/value pair iterator.

The iterator keeps pointers to the params and separators arguments, those variables must thus outlive the iterator and not be modified during the iteration.

If UriParamsFlagsWwwForm is passed in flags, + characters in the param string will be replaced with spaces in the output. For example, foo=bar+baz will give attribute foo with value bar baz. This is commonly used on the web (the https and http schemes only), but is deprecated in favour of the equivalent of encoding spaces as %20.

Unlike with uriParseParams, UriParamsFlagsCaseInsensitive has no effect if passed to flags for uriParamsIterInit. The caller is responsible for doing their own case-insensitive comparisons.

C code

GUriParamsIter iter;
GError *error = NULL;
gchar *unowned_attr, *unowned_value;

g_uri_params_iter_init (&iter, "foo=bar&baz=bar&Foo=frob&baz=bar2", -1, "&", G_URI_PARAMS_NONE);
while (g_uri_params_iter_next (&iter, &unowned_attr, &unowned_value, &error))
  {
    g_autofree gchar *attr = g_steal_pointer (&unowned_attr);
    g_autofree gchar *value = g_steal_pointer (&unowned_value);
    // do something with attr and value; this code will be called 4 times
    // for the params string in this example: once with attr=foo and value=bar,
    // then with baz/bar, then Foo/frob, then baz/bar2.
  }
if (error)
  // handle parsing error

Since: 2.66

Advances iter and retrieves the next attribute/value. False is returned if an error has occurred (in which case error is set), or if the end of the iteration is reached (in which case attribute and value are set to Nothing and the iterator becomes invalid). If True is returned, uriParamsIterNext may be called again to receive another attribute/value pair.

Note that the same attribute may be returned multiple times, since URIs allow repeated attributes.

Since: 2.66