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