introduce function xcb_atom_get (essentially a synchronous xcb_intern…

…_atom, use it only on non-performance critical execution paths)

Signed-off-by: Julien Danjou <[email protected]>

atom/atoms.gperf.m4

@@ -42,6 +42,19 @@ define(`DO', `	OFFSET,define(`OFFSET', eval(OFFSET+1+len($1)))')dnl
 include(atomlist.m4)`'dnl
 };
 
+xcb_atom_t xcb_atom_get(xcb_connection_t *connection, const char *atom_name)
+{
+	if(atom_name == NULL)
+		return XCB_NONE;
+	xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(connection,
+		xcb_intern_atom(connection, 0, strlen(atom_name), atom_name), NULL);
+	if(!reply)
+		return XCB_NONE;
+	xcb_atom_t atom = reply->atom;
+	free(reply);
+	return atom;
+}
+
 xcb_atom_t xcb_atom_get_predefined(uint16_t name_len, const char *name)
 {
 	const struct atom_map *value = in_word_set(name, name_len);

atom/xcb_atom.h.m4

@@ -15,6 +15,16 @@ typedef struct {
 	} u;
 } xcb_atom_fast_cookie_t;
 
+/**
+ * @brief Get an atom synchronously.
+ * @param connection The connection to the X server.
+ * @param atom_name The name of the atom that should be returned.
+ * @return The requested atom, or XCB_NONE if there is an error.
+ *
+ * xcb_atom_get() is essentially a synchronous version of xcb_intern_atom(),
+ * use it only on non-performance critical execution paths.
+ */
+xcb_atom_t xcb_atom_get(xcb_connection_t *connection, const char *atom_name);
 xcb_atom_t xcb_atom_get_predefined(uint16_t name_len, const char *name);
 xcb_atom_fast_cookie_t xcb_atom_get_fast(xcb_connection_t *c, uint8_t only_if_exists, uint16_t name_len, const char *name);
 xcb_atom_t xcb_atom_get_fast_reply(xcb_connection_t *c, xcb_atom_fast_cookie_t cookie, xcb_generic_error_t **e);