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Added new QPDFObjectHandle types Keyword and InlineImage

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These object types are to facilitate content stream parsing.
This commit is contained in:
Jay Berkenbilt 2013-01-20 14:55:01 -05:00
parent a844c2a3ab
commit 1d88955fa6
9 changed files with 178 additions and 3 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2013-01-20 Jay Berkenbilt <ejb@ql.org>
* Added QPDF_Keyword and QPDF_InlineImage types along with
appropriate wrapper methods in QPDFObjectHandle. These new object
types are to facilitate content stream parsing.
2013-01-17 Jay Berkenbilt <ejb@ql.org>
* 4.0.1: release

6
TODO
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@ -1,3 +1,9 @@
4.1.0
=====
* New public interfaces have been added.
General
=======

24
include/qpdf/QPDFObjectHandle.hh
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@ -76,7 +76,8 @@ class QPDFObjectHandle
QPDF_DLL
bool isInitialized() const;
// Exactly one of these will return true for any object.
// Exactly one of these will return true for any object. Keyword
// and InlineImage are only allowed in content streams.
QPDF_DLL
bool isBool();
QPDF_DLL
@ -90,6 +91,10 @@ class QPDFObjectHandle
QPDF_DLL
bool isString();
QPDF_DLL
bool isKeyword();
QPDF_DLL
bool isInlineImage();
QPDF_DLL
bool isArray();
QPDF_DLL
bool isDictionary();
@ -103,7 +108,8 @@ class QPDFObjectHandle
QPDF_DLL
bool isIndirect();
// True for everything except array, dictionary, and stream
// True for everything except array, dictionary, stream, word, and
// inline image.
QPDF_DLL
bool isScalar();
@ -148,6 +154,10 @@ class QPDFObjectHandle
QPDF_DLL
static QPDFObjectHandle newString(std::string const& str);
QPDF_DLL
static QPDFObjectHandle newKeyword(std::string const&);
QPDF_DLL
static QPDFObjectHandle newInlineImage(std::string const&);
QPDF_DLL
static QPDFObjectHandle newArray();
QPDF_DLL
static QPDFObjectHandle newArray(
@ -239,6 +249,12 @@ class QPDFObjectHandle
QPDF_DLL
std::string getUTF8Value();
// Methods for content stream objects
QPDF_DLL
std::string getKeywordValue();
QPDF_DLL
std::string getInlineImageValue();
// Methods for array objects; see also name and array objects
QPDF_DLL
int getArrayNItems();
@ -510,6 +526,10 @@ class QPDFObjectHandle
QPDF_DLL
void assertString();
QPDF_DLL
void assertKeyword();
QPDF_DLL
void assertInlineImage();
QPDF_DLL
void assertArray();
QPDF_DLL
void assertDictionary();

59
libqpdf/QPDFObjectHandle.cc
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@ -7,6 +7,8 @@
#include <qpdf/QPDF_Real.hh>
#include <qpdf/QPDF_Name.hh>
#include <qpdf/QPDF_String.hh>
#include <qpdf/QPDF_Keyword.hh>
#include <qpdf/QPDF_InlineImage.hh>
#include <qpdf/QPDF_Array.hh>
#include <qpdf/QPDF_Dictionary.hh>
#include <qpdf/QPDF_Stream.hh>
@ -151,6 +153,20 @@ QPDFObjectHandle::isString()
return QPDFObjectTypeAccessor<QPDF_String>::check(obj.getPointer());
}
bool
QPDFObjectHandle::isKeyword()
{
dereference();
return QPDFObjectTypeAccessor<QPDF_Keyword>::check(obj.getPointer());
}
bool
QPDFObjectHandle::isInlineImage()
{
dereference();
return QPDFObjectTypeAccessor<QPDF_InlineImage>::check(obj.getPointer());
}
bool
QPDFObjectHandle::isArray()
{
@ -190,7 +206,8 @@ QPDFObjectHandle::isIndirect()
bool
QPDFObjectHandle::isScalar()
{
return (! (isArray() || isDictionary() || isStream()));
return (! (isArray() || isDictionary() || isStream() ||
isKeyword() || isInlineImage()));
}
// Bool accessors
@ -245,6 +262,22 @@ QPDFObjectHandle::getUTF8Value()
return dynamic_cast<QPDF_String*>(obj.getPointer())->getUTF8Val();
}
// Keyword and Inline Image accessors
std::string
QPDFObjectHandle::getKeywordValue()
{
assertKeyword();
return dynamic_cast<QPDF_Keyword*>(obj.getPointer())->getVal();
}
std::string
QPDFObjectHandle::getInlineImageValue()
{
assertInlineImage();
return dynamic_cast<QPDF_InlineImage*>(obj.getPointer())->getVal();
}
// Array accessors
int
@ -928,6 +961,18 @@ QPDFObjectHandle::newString(std::string const& str)
return QPDFObjectHandle(new QPDF_String(str));
}
QPDFObjectHandle
QPDFObjectHandle::newKeyword(std::string const& value)
{
return QPDFObjectHandle(new QPDF_Keyword(value));
}
QPDFObjectHandle
QPDFObjectHandle::newInlineImage(std::string const& value)
{
return QPDFObjectHandle(new QPDF_InlineImage(value));
}
QPDFObjectHandle
QPDFObjectHandle::newArray()
{
@ -1212,6 +1257,18 @@ QPDFObjectHandle::assertString()
assertType("String", isString());
}
void
QPDFObjectHandle::assertKeyword()
{
assertType("Keyword", isKeyword());
}
void
QPDFObjectHandle::assertInlineImage()
{
assertType("InlineImage", isInlineImage());
}
void
QPDFObjectHandle::assertArray()
{

24
libqpdf/QPDF_InlineImage.cc Normal file
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@ -0,0 +1,24 @@
#include <qpdf/QPDF_InlineImage.hh>
#include <qpdf/QUtil.hh>
QPDF_InlineImage::QPDF_InlineImage(std::string const& val) :
val(val)
{
}
QPDF_InlineImage::~QPDF_InlineImage()
{
}
std::string
QPDF_InlineImage::unparse()
{
return this->val;
}
std::string
QPDF_InlineImage::getVal() const
{
return this->val;
}

24
libqpdf/QPDF_Keyword.cc Normal file
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@ -0,0 +1,24 @@
#include <qpdf/QPDF_Keyword.hh>
#include <qpdf/QUtil.hh>
QPDF_Keyword::QPDF_Keyword(std::string const& val) :
val(val)
{
}
QPDF_Keyword::~QPDF_Keyword()
{
}
std::string
QPDF_Keyword::unparse()
{
return this->val;
}
std::string
QPDF_Keyword::getVal() const
{
return this->val;
}

2
libqpdf/build.mk
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@ -40,8 +40,10 @@ SRCS_libqpdf = \
libqpdf/QPDF_Array.cc \
libqpdf/QPDF_Bool.cc \
libqpdf/QPDF_Dictionary.cc \
libqpdf/QPDF_InlineImage.cc \
libqpdf/QPDF_Integer.cc \
libqpdf/QPDF_Name.cc \
libqpdf/QPDF_Keyword.cc \
libqpdf/QPDF_Null.cc \
libqpdf/QPDF_Real.cc \
libqpdf/QPDF_Reserved.cc \

18
libqpdf/qpdf/QPDF_InlineImage.hh Normal file
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@ -0,0 +1,18 @@
#ifndef __QPDF_INLINEIMAGE_HH__
#define __QPDF_INLINEIMAGE_HH__
#include <qpdf/QPDFObject.hh>
class QPDF_InlineImage: public QPDFObject
{
public:
QPDF_InlineImage(std::string const& val);
virtual ~QPDF_InlineImage();
virtual std::string unparse();
std::string getVal() const;
private:
std::string val;
};
#endif // __QPDF_INLINEIMAGE_HH__

18
libqpdf/qpdf/QPDF_Keyword.hh Normal file
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@ -0,0 +1,18 @@
#ifndef __QPDF_KEYWORD_HH__
#define __QPDF_KEYWORD_HH__
#include <qpdf/QPDFObject.hh>
class QPDF_Keyword: public QPDFObject
{
public:
QPDF_Keyword(std::string const& val);
virtual ~QPDF_Keyword();
virtual std::string unparse();
std::string getVal() const;
private:
std::string val;
};
#endif // __QPDF_KEYWORD_HH__