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Stop front ends remembering the data of their last paste.

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Previously, both the Unix and Windows front ends would respond to a
paste action by retrieving data from the system clipboard, converting
it appropriately, _storing_ it in a persistent dynamic data block
inside the front end, and then calling term_do_paste(term), which in
turn would call back to the front end via get_clip() to retrieve the
current contents of that stored data block.

But, as far as I can tell, this was a completely pointless mechanism,
because after a data block was written into this storage area, it
would be immediately used for exactly one paste, and then never
accessed again until the next paste action caused it to be freed and
replaced with a new chunk of pasted data.

So why on earth was it stored persistently at all, and why that
callback mechanism from frontend to terminal back to frontend to
retrieve it for the actual paste action? I have no idea. This change
removes the entire system and replaces it with the completely obvious
alternative: the character-set-converted version of paste data is
allocated in a _local_ variable in the frontend paste functions,
passed directly to term_do_paste which now takes (buffer,length)
parameters, and freed immediately afterwards. get_clip() is gone.
This commit is contained in:
Simon Tatham
2017-12-09 08:41:03 +00:00
parent c05fdb7d61
commit f26654f618
5 changed files with 73 additions and 102 deletions
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3
putty.h
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@ -637,7 +637,6 @@ void palette_reset(void *frontend);
int palette_get(void *frontend, int n, int *r, int *g, int *b);
void write_aclip(void *frontend, char *, int, int);
void write_clip(void *frontend, wchar_t *, int *, truecolour *, int, int);
void get_clip(void *frontend, wchar_t **, int *);
void optimised_move(void *frontend, int, int, int);
void set_raw_mouse_mode(void *frontend, int);
void connection_fatal(void *frontend, const char *, ...);
@ -1057,7 +1056,7 @@ void term_deselect(Terminal *);
void term_update(Terminal *);
void term_invalidate(Terminal *);
void term_blink(Terminal *, int set_cursor);
void term_do_paste(Terminal *);
void term_do_paste(Terminal *, const wchar_t *, int);
void term_nopaste(Terminal *);
int term_ldisc(Terminal *, int option);
void term_copyall(Terminal *);