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add function to escape charaters for HTML

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This commit is contained in:
nautaa 2020-12-01 16:32:09 +08:00
parent c0489ce537
commit eb0c442763
1 changed files with 53 additions and 0 deletions
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53
src/IO/WriteHelpers.h
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@ -581,6 +581,59 @@ void writeCSVString(const StringRef & s, WriteBuffer & buf)
writeCSVString<quote>(s.data, s.data + s.size, buf);
}
inline void writeHTMLString(const char * begin, const char * end, WriteBuffer & buf)
{
const char * pos = begin;
while (true)
{
const char * next_pos = find_first_symbols<'<', '&', '>', '"', '\''>(pos, end);
if (next_pos == end)
{
buf.write(pos, end - pos);
break;
}
else if (*next_pos == '<')
{
buf.write(pos, next_pos - pos);
++next_pos;
writeCString("&lt;", buf);
}
else if (*next_pos == '&')
{
buf.write(pos, next_pos - pos);
++next_pos;
writeCString("&amp;", buf);
}else if (*next_pos == '>')
{
buf.write(pos, next_pos - pos);
++next_pos;
writeCString("&gt;", buf);
}else if (*next_pos == '"')
{
buf.write(pos, next_pos - pos);
++next_pos;
writeCString("&quot;", buf);
}else if (*next_pos == '\'')
{
buf.write(pos, next_pos - pos);
++next_pos;
writeCString("&apos;", buf);
}
pos = next_pos;
}
}
inline void writeHTMLString(const String & s, WriteBuffer & buf)
{
writeHTMLString(s.data(), s.data() + s.size(), buf);
}
inline void writeHTMLString(const StringRef & s, WriteBuffer & buf)
{
writeHTMLString(s.data, s.data + s.size, buf);
}
/// Writing a string to a text node in XML (not into an attribute - otherwise you need more escaping).
inline void writeXMLString(const char * begin, const char * end, WriteBuffer & buf)