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42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
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#include <qpdf/InputSource.hh>
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#include <string.h>
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#include <qpdf/PointerHolder.hh>
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void
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InputSource::setLastOffset(qpdf_offset_t offset)
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{
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this->last_offset = offset;
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}
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qpdf_offset_t
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InputSource::getLastOffset() const
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{
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return this->last_offset;
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}
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std::string
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InputSource::readLine(size_t max_line_length)
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{
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// Return at most max_line_length characters from the next line.
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// Lines are terminated by one or more \r or \n characters.
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// Consume the trailing newline characters but don't return them.
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// After this is called, the file will be positioned after a line
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// terminator or at the end of the file, and last_offset will
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// point to position the file had when this method was called.
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qpdf_offset_t offset = this->tell();
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char* buf = new char[max_line_length + 1];
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PointerHolder<char> bp(true, buf);
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memset(buf, '\0', max_line_length + 1);
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this->read(buf, max_line_length);
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this->seek(offset, SEEK_SET);
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qpdf_offset_t eol = this->findAndSkipNextEOL();
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this->last_offset = offset;
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size_t line_length = eol - offset;
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if (line_length < max_line_length)
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{
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buf[line_length] = '\0';
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}
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return std::string(buf);
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}
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