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