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#include <qpdf/ContentNormalizer.hh>
#include <qpdf/QUtil.hh>
ContentNormalizer::ContentNormalizer() :
any_bad_tokens(false),
last_token_was_bad(false)
{
}
void
ContentNormalizer::handleToken(QPDFTokenizer::Token const& token)
{
std::string value = token.getRawValue();
QPDFTokenizer::token_type_e token_type = token.getType();
if (token_type == QPDFTokenizer::tt_bad) {
this->any_bad_tokens = true;
this->last_token_was_bad = true;
} else if (token_type != QPDFTokenizer::tt_eof) {
this->last_token_was_bad = false;
}
switch (token_type) {
case QPDFTokenizer::tt_space:
{
size_t len = value.length();
for (size_t i = 0; i < len; ++i) {
char ch = value.at(i);
if (ch == '\r') {
if ((i + 1 < len) && (value.at(i + 1) == '\n')) {
// ignore
} else {
write("\n");
}
} else {
write(&ch, 1);
}
}
}
break;
case QPDFTokenizer::tt_string:
// Replacing string and name tokens in this way normalizes their representation as this will
// automatically handle quoting of unprintable characters, etc.
writeToken(QPDFTokenizer::Token(QPDFTokenizer::tt_string, token.getValue()));
break;
case QPDFTokenizer::tt_name:
writeToken(QPDFTokenizer::Token(QPDFTokenizer::tt_name, token.getValue()));
break;
default:
writeToken(token);
break;
}
value = token.getRawValue();
if (((token_type == QPDFTokenizer::tt_string) || (token_type == QPDFTokenizer::tt_name)) &&
((value.find('\r') != std::string::npos) || (value.find('\n') != std::string::npos))) {
write("\n");
}
}
bool
ContentNormalizer::anyBadTokens() const
{
return this->any_bad_tokens;
}
bool
ContentNormalizer::lastTokenWasBad() const
{
return this->last_token_was_bad;
}
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