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Improve HTML parsing in libresapi

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- Completely ignore content of <style> tags, otherwise CSS declarations
  from newer RS builds are displayed
- Only remove <…> tags if it's really html, to prevent destroying messages
  from other webui users
This commit is contained in:
AsamK 2015-09-09 13:36:00 +02:00
parent b8c3c89ae0
commit 7aad9c12d0
1 changed files with 16 additions and 2 deletions
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18
libresapi/src/api/ChatHandler.cpp
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@ -337,10 +337,20 @@ void ChatHandler::tick()
void ChatHandler::getPlainText(const std::string& in, std::string &out, std::vector<Triple> &links)
{
if (in.size() == 0)
return;
if (in[0] != '<' || in[in.size() - 1] != '>')
{
// It's a plain text message without HTML
out = in;
return;
}
bool ignore = false;
bool keep_link = false;
std::string last_six_chars;
unsigned int tag_start_index = 0;
Triple current_link;
for(unsigned int i = 0; i < in.size(); ++i)
{
@ -358,13 +368,17 @@ void ChatHandler::getPlainText(const std::string& in, std::string &out, std::vec
// "rising edge" sets mode to ignore
if(in[i] == '<')
{
tag_start_index = i;
ignore = true;
}
if(!ignore || keep_link)
out += in[i];
// "falling edge" resets mode to keep
if(in[i] == '>')
ignore = false;
if(in[i] == '>') {
// leave ignore mode on, if it's a style tag
if (tag_start_index == 0 || tag_start_index + 6 > i || in.substr(tag_start_index, 6) != "<style")
ignore = false;
}
last_six_chars += in[i];
if(last_six_chars.size() > 6)