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Re-implement reading the clipboard using CollectionChunk; this removes the need for an initial UTF8 chunk scan and allows the chunks to be collated before sending back to the core. Untested and length calculations ignore charset conversion.

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This commit is contained in:
Chris Young 2013-01-08 23:44:13 +00:00
parent 5aae2c3ed0
commit 7ae27476a7
1 changed files with 71 additions and 42 deletions
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113
amiga/clipboard.c
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@ -137,10 +137,62 @@ bool ami_clipboard_check_for_utf8(struct IFFHandle *iffh) {
return utf8_chunk;
}
char *ami_clipboard_cat_collection(struct CollectionItem *ci, LONG codeset, size_t *text_length)
{
struct CollectionItem *ci_curr = ci;
size_t len = 0;
char *text = NULL, *p, *clip;
/* Scan the collected chunks to find out the total size */
do {
len += ci_curr->ci_Size;
} while (ci_curr = ci_curr->ci_Next);
text = malloc(len);
if(text == NULL) return NULL;
/* p points to the end of the buffer. This is because the chunks are
* in the list in reverse order. */
p = text + len;
ci_curr = ci;
do {
p -= ci_curr->ci_Size;
switch(codeset) {
case 106:
memcpy(p, ci_curr->ci_Data, ci_curr->ci_Size);
break;
/* If codeset isn't 106 (UTF-8) we need to convert to UTF-8.
* TODO: ensure buffer is big enough for converted text */
case 0:
utf8_from_local_encoding(ci_curr->ci_Data, ci_curr->ci_Size, &clip);
memcpy(p, clip, ci_curr->ci_Size);
free(clip);
break;
default:
utf8_from_enc(ci_curr->ci_Data,
(const char *)ObtainCharsetInfo(DFCS_NUMBER,
codeset, DFCS_MIMENAME),
ci_curr->ci_Size, &clip);
memcpy(p, clip, ci_curr->ci_Size);
free(clip);
break;
}
} while (ci_curr = ci_curr->ci_Next);
*text_length = len;
return text;
}
void gui_get_clipboard(char **buffer, size_t *length)
{
/* This and the other clipboard code is heavily based on the RKRM examples */
struct ContextNode *cn;
struct CollectionItem *ci = NULL;
ULONG rlen=0,error;
struct CSet cset;
LONG codeset = 0;
@ -150,17 +202,11 @@ void gui_get_clipboard(char **buffer, size_t *length)
cset.CodeSet = 0;
if(ami_clipboard_check_for_utf8(iffh))
utf8_chunks = true;
if(OpenIFF(iffh,IFFF_READ)) return;
if(utf8_chunks == false) {
if(StopChunk(iffh,ID_FTXT,ID_CHRS)) return;
if(StopChunk(iffh,ID_FTXT,ID_CSET)) return;
} else {
if(StopChunk(iffh,ID_FTXT,ID_UTF8)) return;
}
if(CollectionChunk(iffh,ID_FTXT,ID_CHRS)) return;
if(StopChunk(iffh,ID_FTXT,ID_CSET)) return;
if(CollectionChunk(iffh,ID_FTXT,ID_UTF8)) return;
while(1)
{
@ -170,43 +216,26 @@ void gui_get_clipboard(char **buffer, size_t *length)
cn = CurrentChunk(iffh);
if((cn)&&(cn->cn_Type == ID_FTXT)&&(cn->cn_ID == ID_CSET)&&(utf8_chunks == false))
if((cn)&&(cn->cn_Type == ID_FTXT)&&(cn->cn_ID == ID_CSET))
{
rlen = ReadChunkBytes(iffh,&cset,32);
/* Ideally when we stop here, we need to convert all CHRS chunks up to this
* point based on the previous codeset. However, for simplicity, we just
* assume only one CSET chunk is present and only take note of the last
* CSET chunk if there is more than one.
*/
rlen = ReadChunkBytes(iffh, &cset, 32);
if(cset.CodeSet == 1) codeset = 106;
else codeset = cset.CodeSet;
}
if((cn)&&(cn->cn_Type == ID_FTXT)&&(cn->cn_ID == ID_CHRS)&&(utf8_chunks == false))
{
while((rlen = ReadChunkBytes(iffh,readbuf,1024)) > 0)
{
if(codeset == 0)
{
utf8_from_local_encoding(readbuf,rlen,&clip);
}
else
{
utf8_from_enc(readbuf,
(const char *)ObtainCharsetInfo(DFCS_NUMBER,
codeset, DFCS_MIMENAME),
rlen, &clip);
}
//browser_window_paste_text(g->shared->bw,clip,rlen,true);
}
if(rlen < 0) error = rlen;
}
if((cn)&&(cn->cn_Type == ID_FTXT)&&(cn->cn_ID == ID_UTF8)&&(utf8_chunks == true))
{
while((rlen = ReadChunkBytes(iffh, readbuf, 1024)) > 0)
{
//browser_window_paste_text(g->shared->bw, readbuf, rlen, true);
}
if(rlen < 0) error = rlen;
}
}
if(ci = FindCollection(iffh, ID_FTXT, ID_UTF8)) {
*buffer = ami_clipboard_cat_collection(ci, 106, length);
} else if(ci = FindCollection(iffh, ID_FTXT, ID_CHRS)) {
*buffer = ami_clipboard_cat_collection(ci, codeset, length);
}
CloseIFF(iffh);
}