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Add "used" property for PDF objects

This commit is contained in:
Grégory Soutadé 2021-12-18 17:14:53 +01:00
parent ea551b6f52
commit 5ea898b837
1 changed files with 38 additions and 6 deletions
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44
include/uPDFObject.h
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@ -32,7 +32,8 @@ namespace uPDFParser
public:
Object():
_objectId(0), _generationNumber(0),
offset(0), _isNew(false), indirectOffset(0)
_offset(0), _isNew(false), indirectOffset(0),
_used(true)
{}
/**
@ -46,9 +47,10 @@ namespace uPDFParser
* @param indirectOffset Object is indirect
*/
Object(int objectId, int generationNumber, uint64_t offset, bool isNew=false,
off_t indirectOffset=0):
off_t indirectOffset=0, bool used=true):
_objectId(objectId), _generationNumber(generationNumber),
offset(offset), _isNew(isNew), indirectOffset(indirectOffset)
_offset(offset), _isNew(isNew), indirectOffset(indirectOffset),
_used(true)
{}
~Object()
@ -62,9 +64,10 @@ namespace uPDFParser
{
_objectId = other._objectId;
_generationNumber = other._generationNumber;
offset = other.offset;
_offset = other._offset;
indirectOffset = other.indirectOffset;
_isNew = true;
_used = other._used;
std::vector<DataType*>::const_iterator it;
for(it=other._data.begin(); it!=other._data.end(); it++)
@ -97,6 +100,11 @@ namespace uPDFParser
*/
std::string str();
/**
* @brief Object offset
*/
off_t offset() {return _offset;}
/**
* @brief Set object as indirect if offset != 0 or not indirect if offset == 0
*/
@ -115,7 +123,14 @@ namespace uPDFParser
/**
* @brief Check for key in object's dictionary
*/
bool hasKey(const std::string& key) { return _dictionary.value().count(key)?true:false; }
bool hasKey(const std::string& key) { return _dictionary.hasKey(key); }
/**
* @brief Remove a key in object's dictionary
* No error if the key doesn't exists
* Value is freed during this operation
*/
void deleteKey(const std::string& key) { _dictionary.deleteKey(key); }
/**
* @brief is object new (or not updated) ?
@ -136,13 +151,30 @@ namespace uPDFParser
* @brief Return object's generation number
*/
int generationNumber() { return _generationNumber; }
/**
* @brief Return object status used ('n') or free ('f')
*/
bool used() {return _used;}
/**
* @brief Update used flag
*/
void setUsed(bool used) {_used = used;}
bool operator == (const Object& other)
{
return _objectId == other._objectId &&
_generationNumber == other._generationNumber;
}
private:
int _objectId;
int _generationNumber;
off_t offset;
off_t _offset;
bool _isNew;
off_t indirectOffset;
bool _used;
Dictionary _dictionary;
std::vector<DataType*> _data;
};