// encodes a few dangerous html characters
static QString linkify_htmlsafe(const QString &in)
{
QString out;
for(int n = 0; n < in.length(); ++n) {
if(linkify_isOneOf(in.at(n), "\"\'`<>")) {
// hex encode
QString hex;
hex.sprintf("%%%02X", in.at(n).toLatin1());
out.append(hex);
}
else {
out.append(in.at(n));
}
}
return out;
}
void URLWatcherPlugin::message( const QString& message, const QString& fromJid, const QString& fromDisplay)
{
QString newUrl;
QString out = message;
int x1, x2;
bool isUrl, isEmail;
QString linked, link, href;
for(int n = 0; n < (int)out.length(); ++n) {
isUrl = FALSE;
isEmail = FALSE;
x1 = n;
if(linkify_pmatch(out, n, "http://")) {
n += 7;
isUrl = TRUE;
href = "";
}
else if(linkify_pmatch(out, n, "https://")) {
n += 8;
isUrl = TRUE;
href = "";
}
else if(linkify_pmatch(out, n, "ftp://")) {
n += 6;
isUrl = TRUE;
href = "";
}
else if(linkify_pmatch(out, n, "news://")) {
n += 7;
isUrl = TRUE;
href = "";
}
else if (linkify_pmatch(out, n, "ed2k://")) {
n += 7;
isUrl = TRUE;
href = "";
}
else if(linkify_pmatch(out, n, "www.")) {
isUrl = TRUE;
href = "http://";
}
else if(linkify_pmatch(out, n, "ftp.")) {
isUrl = TRUE;
href = "ftp://";
}
else if(linkify_pmatch(out, n, "@")) {
isEmail = TRUE;
href = "mailto:";
}
if(isUrl) {
// make sure the previous char is not alphanumeric
if(x1 > 0 && out.at(x1-1).isLetterOrNumber())
continue;
// find whitespace (or end)
for(x2 = n; x2 < (int)out.length(); ++x2) {
if(out.at(x2).isSpace() || out.at(x2) == '<')
break;
}
int len = x2-x1;
QString pre = resolveEntities(out.mid(x1, x2-x1));
// go backward hacking off unwanted punctuation
int cutoff;
for(cutoff = pre.length()-1; cutoff >= 0; --cutoff) {
if(!linkify_isOneOf(pre.at(cutoff), "!?,.()[]{}<>\""))
break;
}
++cutoff;
//++x2;
link = pre.mid(0, cutoff);
if(!linkify_okUrl(link)) {
n = x1 + link.length();
continue;
}
href += link;
href = linkify_htmlsafe(href);
//printf("link: [%s], href=[%s]\n", link.latin1(), href.latin1());
linked = QString("<a href=\"%1\">").arg(href) + Qt::escape(link) + "</a>" + Qt::escape(pre.mid(cutoff));
out.replace(x1, len, linked);
n = x1 + linked.length() - 1;
}
else if(isEmail) {
// go backward till we find the beginning
if(x1 == 0)
continue;
--x1;
for(; x1 >= 0; --x1) {
if(!linkify_isOneOf(out.at(x1), "_.-") && !out.at(x1).isLetterOrNumber())
break;
}
++x1;
// go forward till we find the end
x2 = n + 1;
for(; x2 < (int)out.length(); ++x2) {
if(!linkify_isOneOf(out.at(x2), "_.-") && !out.at(x2).isLetterOrNumber())
break;
}
int len = x2-x1;
link = out.mid(x1, len);
//link = resolveEntities(link);
if(!linkify_okEmail(link)) {
n = x1 + link.length();
continue;
}
href += link;
//printf("link: [%s], href=[%s]\n", link.latin1(), href.latin1());
linked = QString("<a href=\"%1\">").arg(href) + link + "</a>";
out.replace(x1, len, linked);
n = x1 + linked.length() - 1;
}
}
newUrl=out;
qWarning("string parsed");
if (isUrl)
{
qWarning(qPrintable(QString("it's a url %1").arg(newUrl)));
newUrl=QString("<%1> <a href='%2'>%2</a><br />").arg(fromDisplay).arg(newUrl);
viewerText_->append(newUrl);
}
}
/**
* takes a richtext string and heuristically adds links for uris of common protocols
* @return a richtext string with link markup added
*/
QString TextUtil::linkify(const QString &in)
{
QString out = in;
int x1, x2;
bool isUrl, isAtStyle;
QString linked, link, href;
for(int n = 0; n < (int)out.length(); ++n) {
isUrl = false;
isAtStyle = false;
x1 = n;
if(linkify_pmatch(out, n, "xmpp:")) {
n += 5;
isUrl = true;
href = "";
}
else if(linkify_pmatch(out, n, "mailto:")) {
n += 7;
isUrl = true;
href = "";
}
else if(linkify_pmatch(out, n, "http://")) {
n += 7;
isUrl = true;
href = "";
}
else if(linkify_pmatch(out, n, "https://")) {
n += 8;
isUrl = true;
href = "";
}
else if(linkify_pmatch(out, n, "ftp://")) {
n += 6;
isUrl = true;
href = "";
}
else if(linkify_pmatch(out, n, "news://")) {
n += 7;
isUrl = true;
href = "";
}
else if (linkify_pmatch(out, n, "ed2k://")) {
n += 7;
isUrl = true;
href = "";
}
else if (linkify_pmatch(out, n, "magnet:")) {
n += 7;
isUrl = true;
href = "";
}
else if(linkify_pmatch(out, n, "www.")) {
isUrl = true;
href = "http://";
}
else if(linkify_pmatch(out, n, "ftp.")) {
isUrl = true;
href = "ftp://";
}
else if(linkify_pmatch(out, n, "@")) {
isAtStyle = true;
href = "x-psi-atstyle:";
}
if(isUrl) {
// make sure the previous char is not alphanumeric
if(x1 > 0 && out.at(x1-1).isLetterOrNumber())
continue;
// find whitespace (or end)
QMap<QChar, int> brackets;
brackets['('] = brackets[')'] = brackets['['] = brackets[']'] = brackets['{'] = brackets['}'] = 0;
QMap<QChar, QChar> openingBracket;
openingBracket[')'] = '(';
openingBracket[']'] = '[';
openingBracket['}'] = '{';
for(x2 = n; x2 < (int)out.length(); ++x2) {
if(out.at(x2).isSpace() || linkify_isOneOf(out.at(x2), "\"\'`<>")
|| linkify_pmatch(out, x2, """) || linkify_pmatch(out, x2, "'")
|| linkify_pmatch(out, x2, ">") || linkify_pmatch(out, x2, "<") ) {
break;
}
if(brackets.keys().contains(out.at(x2))) {
++brackets[out.at(x2)];
}
}
int len = x2-x1;
QString pre = resolveEntities(out.mid(x1, x2-x1));
// go backward hacking off unwanted punctuation
int cutoff;
for(cutoff = pre.length()-1; cutoff >= 0; --cutoff) {
if(!linkify_isOneOf(pre.at(cutoff), "!?,.()[]{}<>\""))
break;
if(linkify_isOneOf(pre.at(cutoff), ")]}")
&& brackets[pre.at(cutoff)] - brackets[openingBracket[pre.at(cutoff)]] <= 0 ) {
break; // in theory, there could be == above, but these are urls, not math ;)
}
if(brackets.keys().contains(pre.at(cutoff))) {
--brackets[pre.at(cutoff)];
}
}
++cutoff;
//++x2;
link = pre.mid(0, cutoff);
if(!linkify_okUrl(link)) {
n = x1 + link.length();
continue;
}
href += link;
// attributes need to be encoded too.
href = escape(href);
href = linkify_htmlsafe(href);
//printf("link: [%s], href=[%s]\n", link.latin1(), href.latin1());
linked = QString("<a href=\"%1\">").arg(href) + escape(link) + "</a>" + escape(pre.mid(cutoff));
out.replace(x1, len, linked);
n = x1 + linked.length() - 1;
}
else if(isAtStyle) {
// go backward till we find the beginning
if(x1 == 0)
continue;
--x1;
for(; x1 >= 0; --x1) {
if(!linkify_isOneOf(out.at(x1), "_.-") && !out.at(x1).isLetterOrNumber())
break;
}
++x1;
// go forward till we find the end
x2 = n + 1;
for(; x2 < (int)out.length(); ++x2) {
if(!linkify_isOneOf(out.at(x2), "_.-") && !out.at(x2).isLetterOrNumber())
break;
}
int len = x2-x1;
link = out.mid(x1, len);
//link = resolveEntities(link);
if(!linkify_okEmail(link)) {
n = x1 + link.length();
continue;
}
href += link;
//printf("link: [%s], href=[%s]\n", link.latin1(), href.latin1());
linked = QString("<a href=\"%1\">").arg(href) + link + "</a>";
out.replace(x1, len, linked);
n = x1 + linked.length() - 1;
}
}
return out;
}
/**
* takes a richtext string and heuristically adds links for uris of common protocols
* @return a richtext string with link markup added
*/
QString TextUtil::linkify(const QString &in)
{
QString out = in;
int x1, x2;
bool isUrl, isEmail;
QString linked, link, href;
for(int n = 0; n < (int)out.length(); ++n) {
isUrl = FALSE;
isEmail = FALSE;
x1 = n;
if(linkify_pmatch(out, n, "http://")) {
n += 7;
isUrl = TRUE;
href = "";
}
else if(linkify_pmatch(out, n, "https://")) {
n += 8;
isUrl = TRUE;
href = "";
}
else if(linkify_pmatch(out, n, "ftp://")) {
n += 6;
isUrl = TRUE;
href = "";
}
else if(linkify_pmatch(out, n, "news://")) {
n += 7;
isUrl = TRUE;
href = "";
}
else if (linkify_pmatch(out, n, "ed2k://")) {
n += 7;
isUrl = TRUE;
href = "";
}
else if(linkify_pmatch(out, n, "www.")) {
isUrl = TRUE;
href = "http://";
}
else if(linkify_pmatch(out, n, "ftp.")) {
isUrl = TRUE;
href = "ftp://";
}
else if(linkify_pmatch(out, n, "@")) {
isEmail = TRUE;
href = "mailto:";
}
if(isUrl) {
// make sure the previous char is not alphanumeric
if(x1 > 0 && out.at(x1-1).isLetterOrNumber())
continue;
// find whitespace (or end)
for(x2 = n; x2 < (int)out.length(); ++x2) {
if(out.at(x2).isSpace() || out.at(x2) == '<')
break;
}
int len = x2-x1;
QString pre = resolveEntities(out.mid(x1, x2-x1));
// go backward hacking off unwanted punctuation
int cutoff;
for(cutoff = pre.length()-1; cutoff >= 0; --cutoff) {
if(!linkify_isOneOf(pre.at(cutoff), "!?,.()[]{}<>\""))
break;
}
++cutoff;
//++x2;
link = pre.mid(0, cutoff);
if(!linkify_okUrl(link)) {
n = x1 + link.length();
continue;
}
href += link;
// attributes need to be encoded too.
href = Qt::escape(href);
href = linkify_htmlsafe(href);
//printf("link: [%s], href=[%s]\n", link.latin1(), href.latin1());
linked = QString("<a href=\"%1\">").arg(href) + Qt::escape(link) + "</a>" + Qt::escape(pre.mid(cutoff));
out.replace(x1, len, linked);
n = x1 + linked.length() - 1;
}
else if(isEmail) {
// go backward till we find the beginning
if(x1 == 0)
continue;
--x1;
for(; x1 >= 0; --x1) {
if(!linkify_isOneOf(out.at(x1), "_.-") && !out.at(x1).isLetterOrNumber())
break;
}
++x1;
// go forward till we find the end
x2 = n + 1;
for(; x2 < (int)out.length(); ++x2) {
if(!linkify_isOneOf(out.at(x2), "_.-") && !out.at(x2).isLetterOrNumber())
break;
}
int len = x2-x1;
link = out.mid(x1, len);
//link = resolveEntities(link);
if(!linkify_okEmail(link)) {
n = x1 + link.length();
continue;
}
href += link;
//printf("link: [%s], href=[%s]\n", link.latin1(), href.latin1());
linked = QString("<a href=\"%1\">").arg(href) + link + "</a>";
out.replace(x1, len, linked);
n = x1 + linked.length() - 1;
}
}
return out;
}