[client] clipboard/wayland: implement better text mimetype heuristic

This roughly matches the heuristic that wl-copy uses to detect text.
This commit is contained in:
Tudor Brindus 2021-01-09 14:03:52 -05:00 committed by Geoffrey McRae
parent fb7ee16f7b
commit 48941cb9c4

View File

@ -125,9 +125,40 @@ static bool contains_mimetype(const char ** mimetypes,
return false;
}
static enum LG_ClipboardData mimetype_to_cb_type(const char * mimetype)
static bool mimetype_endswith(const char * mimetype, const char * what)
{
size_t mimetype_len = strlen(mimetype);
size_t what_len = strlen(what);
if (mimetype_len < what_len)
return false;
return !strcmp(mimetype + mimetype_len - what_len, what);
}
static bool is_text_mimetype(const char * mimetype)
{
if (contains_mimetype(text_mimetypes, mimetype))
return true;
char * text = "text/";
if (!strncmp(mimetype, text, strlen(text)))
return true;
if (mimetype_endswith(mimetype, "script") ||
mimetype_endswith(mimetype, "xml") ||
mimetype_endswith(mimetype, "yaml"))
return true;
if (strstr(mimetype, "json"))
return true;
return false;
}
static enum LG_ClipboardData mimetype_to_cb_type(const char * mimetype)
{
if (is_text_mimetype(mimetype))
return LG_CLIPBOARD_DATA_TEXT;
if (contains_mimetype(png_mimetypes, mimetype))
@ -256,7 +287,11 @@ static void wl_data_handle_offer(void * data, struct wl_data_offer * offer,
const char * mimetype)
{
enum LG_ClipboardData type = mimetype_to_cb_type(mimetype);
if (type != LG_CLIPBOARD_DATA_NONE)
// Oftentimes we'll get text/html alongside text/png, but would prefer to send
// image/png. In general, prefer images over text content.
if (type != LG_CLIPBOARD_DATA_NONE &&
(this->stashed_type == LG_CLIPBOARD_DATA_NONE ||
this->stashed_type == LG_CLIPBOARD_DATA_TEXT))
{
this->stashed_type = type;
if (this->stashed_mimetype)