111 lines
2.6 KiB
C++
111 lines
2.6 KiB
C++
/*
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Copyright 2021 Grégory Soutadé
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This file is part of uPDFParser.
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uPDFParser is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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uPDFParser is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with uPDFParser. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _UPDFPARSER_HPP_
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#define _UPDFPARSER_HPP_
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#include <exception>
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#include <map>
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#include <vector>
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#include <string>
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#include <sstream>
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#include <iostream>
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#include <iomanip>
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#include <string.h>
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#include <unistd.h>
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#include "uPDFTypes.h"
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#include "uPDFObject.h"
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namespace uPDFParser
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{
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/**
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* @brief PDF Parser
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*/
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class Parser
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{
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public:
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Parser():
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fd(0)
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{}
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~Parser()
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{
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if (fd) close(fd);
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std::vector<Object*>::iterator it;
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for(it=_objects.begin(); it!=_objects.end(); it++)
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delete *it;
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}
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/**
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* @brief Parse a file
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*/
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void parse(const std::string& filename);
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/**
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* @brief Write a PDF file with internal objects
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*
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* @param filename File path
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* @param update Only append new objects if true
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* Write a new PDF file if false (not supported for now)
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*/
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void write(const std::string& filename, bool update=false);
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/**
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* @brief Get internals (or parsed) objects
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*/
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std::vector<Object*>& objects() { return _objects; }
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/**
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* @brief Add an object
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*/
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void addObject(Object* object) { _objects.push_back(object); }
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private:
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void parseObject(std::string& token);
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void parseStartXref();
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void parseXref();
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void parseTrailer();
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std::string nextToken(bool exceptionOnEOF=true);
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DataType* parseType(std::string& token, Object* object, std::map<std::string, DataType*>& dict);
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void parseDictionary(Object* object, std::map<std::string, DataType*>& dict);
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DataType* parseSignedNumber(std::string& token);
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DataType* parseNumber(std::string& token);
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DataType* parseNumberOrReference(std::string& token);
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Array* parseArray(Object* object);
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String* parseString();
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HexaString* parseHexaString();
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Stream* parseStream(Object* object);
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Name* parseName(std::string& token);
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void writeUpdate(const std::string& filename);
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std::vector<Object*> _objects;
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Object trailer;
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off_t xrefOffset;
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int fd;
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off_t curOffset;
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};
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}
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#endif
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