Add means to find out if a NetSurf URL object contains a given component.

svn path=/trunk/netsurf/; revision=12883

utils/nsurl.c

@@ -1181,6 +1181,65 @@ nserror nsurl_get(const nsurl *url, nsurl_component parts,
 }
 
 
+/* exported interface, documented in nsurl.h */
+bool nsurl_enquire(const nsurl *url, nsurl_component part)
+{
+	assert(url != NULL);
+
+	if (part == NSURL_SCHEME) {
+		if (url->scheme != NULL)
+			return true;
+		else
+			return false;
+
+	} else if (part == NSURL_QUERY) {
+		if (url->query != NULL)
+			return true;
+		else
+			return false;
+
+	} else if (part == NSURL_USERNAME || part == NSURL_CREDENTIALS) {
+		if (url->username != NULL)
+			return true;
+		else
+			return false;
+
+	} else if (part == NSURL_PASSWORD) {
+		if (url->password != NULL)
+			return true;
+		else
+			return false;
+
+	} else if (part == NSURL_HOST) {
+		if (url->host != NULL)
+			return true;
+		else
+			return false;
+
+	} else if (part == NSURL_PORT) {
+		if (url->port != NULL)
+			return true;
+		else
+			return false;
+
+	} else if (part == NSURL_PATH) {
+		if (url->path != NULL)
+			return true;
+		else
+			return false;
+
+	} else if (part == NSURL_FRAGMENT) {
+		if (url->fragment != NULL)
+			return true;
+		else
+			return false;
+	}
+
+	LOG(("Unsupported value passed to part param."));
+	assert(0);
+}
+
+
 /* exported interface, documented in nsurl.h */
 const char *nsurl_access(const nsurl *url)
 {

utils/nsurl.h

@@ -124,6 +124,28 @@ nserror nsurl_get(const nsurl *url, nsurl_component parts,
 		char **url_s, size_t *url_l);
 
 
+/**
+ * Enquire about the existence of componenets in a given URL
+ *
+ * \param url	  NetSurf URL object
+ * \param part	  The URL components confirm existence of
+ * \return true iff the component in question exists in url
+ *
+ * The valid values for the part parameter are:
+ *    NSURL_SCHEME
+ *    NSURL_USERNAME
+ *    NSURL_PASSWORD
+ *    NSURL_CREDENTIALS
+ *    NSURL_HOST
+ *    NSURL_PORT
+ *    NSURL_AUTHORITY
+ *    NSURL_PATH
+ *    NSURL_QUERY
+ *    NSURL_FRAGMENT
+ */
+bool nsurl_enquire(const nsurl *url, nsurl_component part);
+
+
 /**
  * Access a NetSurf URL object as a string
  *