/*
* when copy-paste, mozilla wants data encoded using UCS2,
* other app such as StarOffice use "text/html"(RFC2854).
* This function convert data(got from GTK clipboard)
* to data mozilla wanted.
*
* data from GTK clipboard can be 3 forms:
* 1. From current mozilla
* "text/html", charset = utf-16
* 2. From old version mozilla or mozilla-based app
* content("body" only), charset = utf-16
* 3. From other app who use "text/html" when copy-paste
* "text/html", has "charset" info
*
* data : got from GTK clipboard
* dataLength: got from GTK clipboard
* body : pass to Mozilla
* bodyLength: pass to Mozilla
*/
void ConvertHTMLtoUCS2(guchar * data, PRInt32 dataLength,
PRUnichar** unicodeData, PRInt32& outUnicodeLen)
{
nsCAutoString charset;
GetHTMLCharset(data, dataLength, charset);// get charset of HTML
if (charset.EqualsLiteral("UTF-16")) {//current mozilla
outUnicodeLen = (dataLength / 2) - 1;
*unicodeData = NS_REINTERPRET_CAST(PRUnichar*,
nsMemory::Alloc((outUnicodeLen + sizeof('\0')) *
sizeof(PRUnichar)));
if (unicodeData) {
memcpy(*unicodeData, data + sizeof(PRUnichar),
outUnicodeLen * sizeof(PRUnichar));
(*unicodeData)[outUnicodeLen] = '\0';
}
} else if (charset.EqualsLiteral("UNKNOWN")) {
/*
* when copy-paste, mozilla wants data encoded using UCS2,
* other app such as StarOffice use "text/html"(RFC2854).
* This function convert data(got from GTK clipboard)
* to data mozilla wanted.
*
* data from GTK clipboard can be 3 forms:
* 1. From current mozilla
* "text/html", charset = utf-16
* 2. From old version mozilla or mozilla-based app
* content("body" only), charset = utf-16
* 3. From other app who use "text/html" when copy-paste
* "text/html", has "charset" info
*
* data : got from GTK clipboard
* dataLength: got from GTK clipboard
* body : pass to Mozilla
* bodyLength: pass to Mozilla
*/
void ConvertHTMLtoUCS2(guchar * data, PRInt32 dataLength,
PRUnichar** unicodeData, PRInt32& outUnicodeLen)
{
nsCAutoString charset;
GetHTMLCharset(data, dataLength, charset);// get charset of HTML
if (charset.EqualsLiteral("UTF-16")) {//current mozilla
outUnicodeLen = (dataLength / 2) - 1;
*unicodeData = reinterpret_cast<PRUnichar*>
(nsMemory::Alloc((outUnicodeLen + sizeof('\0')) *
sizeof(PRUnichar)));
if (*unicodeData) {
memcpy(*unicodeData, data + sizeof(PRUnichar),
outUnicodeLen * sizeof(PRUnichar));
(*unicodeData)[outUnicodeLen] = '\0';
}
} else if (charset.EqualsLiteral("UNKNOWN")) {
outUnicodeLen = 0;
return;
} else {
// app which use "text/html" to copy&paste
nsCOMPtr<nsIUnicodeDecoder> decoder;
nsresult rv;
// get the decoder
nsCOMPtr<nsICharsetConverterManager> ccm =
do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &rv);
if (NS_FAILED(rv)) {
#ifdef DEBUG_CLIPBOARD
g_print(" can't get CHARSET CONVERTER MANAGER service\n");
#endif
outUnicodeLen = 0;
return;
}
rv = ccm->GetUnicodeDecoder(charset.get(), getter_AddRefs(decoder));
if (NS_FAILED(rv)) {
#ifdef DEBUG_CLIPBOARD
g_print(" get unicode decoder error\n");
#endif
outUnicodeLen = 0;
return;
}
// converting
decoder->GetMaxLength((const char *)data, dataLength, &outUnicodeLen);
// |outUnicodeLen| is number of chars
if (outUnicodeLen) {
*unicodeData = reinterpret_cast<PRUnichar*>
(nsMemory::Alloc((outUnicodeLen + sizeof('\0')) *
sizeof(PRUnichar)));
if (*unicodeData) {
PRInt32 numberTmp = dataLength;
decoder->Convert((const char *)data, &numberTmp,
*unicodeData, &outUnicodeLen);
#ifdef DEBUG_CLIPBOARD
if (numberTmp != dataLength)
printf("didn't consume all the bytes\n");
#endif
// null terminate. Convert() doesn't do it for us
(*unicodeData)[outUnicodeLen] = '\0';
}
} // if valid length
}
}