// Return input with pattern replaced by sub.
func reSub(pattern []byte, sub []byte, input []byte) []byte {
var err *C.GError = nil
re := C.g_regex_new(
(*C.gchar)(data(append(pattern, 0))),
C.G_REGEX_CASELESS|
C.G_REGEX_RAW|
C.G_REGEX_NO_AUTO_CAPTURE|
C.G_REGEX_OPTIMIZE,
0,
&err)
if err != nil {
panic("g_regex_new")
}
defer C.g_regex_unref(re)
subd := C.g_regex_replace_literal(re, (*C.gchar)(data(input)),
C.gssize(len(input)), 0, (*C.gchar)(data(sub)), 0, &err)
if err != nil {
panic("g_regex_replace_literal")
}
defer C.g_free(C.gpointer(subd))
l := C.strlen((*C.char)(subd))
rv := make([]byte, l)
C.memcpy(data(rv), unsafe.Pointer(subd), l)
return rv
}
func gtk_init() error {
var err *C.GError = nil // redundant in Go, but let's explicitly assign it anyway
// gtk_init_with_args() gives us error info (thanks chpe in irc.gimp.net/#gtk+)
// don't worry about GTK+'s command-line arguments; they're also available as environment variables (thanks mclasen in irc.gimp.net/#gtk+)
result := C.gtk_init_with_args(nil, nil, nil, nil, nil, &err)
if result == C.FALSE {
return fmt.Errorf("error actually initilaizing GTK+: %s", fromgstr(err.message))
}
// now apply our custom program-global styles
provider := C.gtk_css_provider_new()
if C.gtk_css_provider_load_from_data(provider, (*C.gchar)(unsafe.Pointer(>kStyles[0])), C.gssize(len(gtkStyles)), &err) == C.FALSE {
return fmt.Errorf("error applying package ui's custom program-global styles to GTK+: %v", fromgstr(err.message))
}
// GDK (at least as far back as GTK+ 3.4, but officially documented as of 3.10) merges all screens into one big one, so we don't need to worry about multimonitor
// thanks to baedert and mclasen in irc.gimp.net/#gtk+
C.gtk_style_context_add_provider_for_screen(C.gdk_screen_get_default(),
(*C.GtkStyleProvider)(unsafe.Pointer(provider)),
C.GTK_STYLE_PROVIDER_PRIORITY_USER)
return nil
}