octoleo/qpdf
2
1
Fork 0
mirror of https://github.com/qpdf/qpdf.git synced 2025-01-22 22:58:33 +00:00
Code Issues Releases Wiki Activity

Remove some if statements and simplify some boolean expressions

Browse Source 
Use QPDFObjectHandle::isNameAndEquals, isDictionaryOfType and
isStreamOfType.
This commit is contained in:
m-holger 2022-01-26 08:00:23 +00:00 committed by Jay Berkenbilt
parent 710d2e54f0
commit 07db3200cb
12 changed files with 38 additions and 103 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
examples/pdf-create.cc
View File

@ -290,15 +290,14 @@ static void check(char const* filename,
QPDFObjectHandle color_space = image_dict.getKey("/ColorSpace");
QPDFObjectHandle filter = image_dict.getKey("/Filter");
bool this_errors = false;
if (! (filter.isName() && (filter.getName() == desired_filter)))
if (! filter.isNameAndEquals(desired_filter))
{
this_errors = errors = true;
std::cout << "page " << pageno << ": expected filter "
<< desired_filter << "; actual filter = "
<< filter.unparse() << std::endl;
}
if (! (color_space.isName() &&
(color_space.getName() == desired_color_space)))
if (! color_space.isNameAndEquals(desired_color_space))
{
this_errors = errors = true;
std::cout << "page " << pageno << ": expected color space "

3
examples/pdf-invert-images.cc
View File

@ -167,9 +167,8 @@ int main(int argc, char* argv[])
// keys to determine the image type.
if (image.pipeStreamData(0, qpdf_ef_compress,
qpdf_dl_all) &&
color_space.isName() &&
color_space.isNameAndEquals("/DeviceGray") &&
bits_per_component.isInteger() &&
(color_space.getName() == "/DeviceGray") &&
(bits_per_component.getIntValue() == 8))
{
inv->registerImage(image, p);

17
libqpdf/QPDF.cc
View File

@ -1100,10 +1100,7 @@ QPDF::read_xrefStream(qpdf_offset_t xref_offset)
{
// ignore -- report error below
}
if (xref_obj.isInitialized() &&
xref_obj.isStream() &&
xref_obj.getDict().getKey("/Type").isName() &&
xref_obj.getDict().getKey("/Type").getName() == "/XRef")
if (xref_obj.isStreamOfType("/XRef"))
{
QTC::TC("qpdf", "QPDF found xref stream");
found = true;
@ -2202,8 +2199,7 @@ QPDF::resolveObjectsInStream(int obj_stream_number)
this->m->obj_cache[stream_og].end_after_space;
QPDFObjectHandle dict = obj_stream.getDict();
if (! (dict.getKey("/Type").isName() &&
dict.getKey("/Type").getName() == "/ObjStm"))
if (! dict.isDictionaryOfType("/ObjStm"))
{
QTC::TC("qpdf", "QPDF ERR object stream with wrong type");
warn(QPDFExc(qpdf_e_damaged_pdf, this->m->file->getName(),
@ -2849,13 +2845,10 @@ QPDF::getCompressibleObjGens()
{
QTC::TC("qpdf", "QPDF exclude encryption dictionary");
}
else if ((! obj.isStream()) &&
(! (obj.isDictionary() &&
else if (! (obj.isStream() ||
(obj.isDictionaryOfType("/Sig") &&
obj.hasKey("/ByteRange") &&
obj.hasKey("/Contents") &&
obj.hasKey("/Type") &&
obj.getKey("/Type").isName() &&
obj.getKey("/Type").getName() == "/Sig")))
obj.hasKey("/Contents"))))
{
result.push_back(og);
}

4
libqpdf/QPDFAcroFormDocumentHelper.cc
View File

@ -280,9 +280,7 @@ QPDFAcroFormDocumentHelper::getFieldForAnnotation(QPDFAnnotationObjectHelper h)
{
QPDFObjectHandle oh = h.getObjectHandle();
QPDFFormFieldObjectHelper result(QPDFObjectHandle::newNull());
if (! (oh.isDictionary() &&
oh.getKey("/Subtype").isName() &&
(oh.getKey("/Subtype").getName() == "/Widget")))
if (! oh.isDictionaryOfType("", "/Widget"))
{
return result;
}

3
libqpdf/QPDFFileSpecObjectHelper.cc
View File

@ -15,8 +15,7 @@ QPDFFileSpecObjectHelper::QPDFFileSpecObjectHelper(
oh.warnIfPossible("Embedded file object is not a dictionary");
return;
}
auto type = oh.getKey("/Type");
if (! (type.isName() && (type.getName() == "/Filespec")))
if (! oh.isDictionaryOfType("/Filespec"))
{
oh.warnIfPossible("Embedded file object's type is not /Filespec");
}

52
libqpdf/QPDFObjectHandle.cc
View File

@ -1055,23 +1055,9 @@ QPDFObjectHandle::getDictAsMap()
bool
QPDFObjectHandle::isOrHasName(std::string const& value)
{
if (isName() && (getName() == value))
{
return true;
}
else if (isArray())
{
int n = getArrayNItems();
for (int i = 0; i < n; ++i)
{
QPDFObjectHandle item = getArrayItem(0);
if (item.isName() && (item.getName() == value))
{
return true;
}
}
}
return false;
return isNameAndEquals(value) ||
(isArray() && (getArrayNItems() > 0) &&
getArrayItem(0).isNameAndEquals(value));
}
void
@ -2520,8 +2506,7 @@ QPDFObjectHandle::parseInternal(PointerHolder<InputSource> input,
}
if (!contents_string.empty() &&
dict.count("/Type") &&
dict["/Type"].isName() &&
dict["/Type"].getName() == "/Sig" &&
dict["/Type"].isNameAndEquals("/Sig") &&
dict.count("/ByteRange") &&
dict.count("/Contents") &&
dict["/Contents"].isString())
@ -3237,7 +3222,7 @@ QPDFObjectHandle::isPageObject()
if (this->hasKey("/Type"))
{
QPDFObjectHandle type = this->getKey("/Type");
if (type.isName() && (type.getName() == "/Page"))
if (type.isNameAndEquals("/Page"))
{
return true;
}
@ -3263,39 +3248,22 @@ QPDFObjectHandle::isPagesObject()
}
// getAllPages repairs /Type when traversing the page tree.
getOwningQPDF()->getAllPages();
return (this->isDictionary() &&
this->hasKey("/Type") &&
this->getKey("/Type").isName() &&
this->getKey("/Type").getName() == "/Pages");
return isDictionaryOfType("/Pages");
}
bool
QPDFObjectHandle::isFormXObject()
{
if (! this->isStream())
{
return false;
}
QPDFObjectHandle dict = this->getDict();
return (dict.getKey("/Type").isName() &&
("/XObject" == dict.getKey("/Type").getName()) &&
dict.getKey("/Subtype").isName() &&
("/Form" == dict.getKey("/Subtype").getName()));
return isStreamOfType("/XObject", "/Form");
}
bool
QPDFObjectHandle::isImage(bool exclude_imagemask)
{
if (! this->isStream())
{
return false;
}
QPDFObjectHandle dict = this->getDict();
return (dict.hasKey("/Subtype") &&
(dict.getKey("/Subtype").getName() == "/Image") &&
return (isStreamOfType("", "/Image") &&
((! exclude_imagemask) ||
(! (dict.getKey("/ImageMask").isBool() &&
dict.getKey("/ImageMask").getBoolValue()))));
(! (getDict().getKey("/ImageMask").isBool() &&
getDict().getKey("/ImageMask").getBoolValue()))));
}
void

5
libqpdf/QPDFPageObjectHelper.cc
View File

@ -558,10 +558,7 @@ QPDFPageObjectHelper::getAnnotations(std::string const& only_subtype)
for (int i = 0; i < nannots; ++i)
{
QPDFObjectHandle annot = annots.getArrayItem(i);
if (only_subtype.empty() ||
(annot.isDictionary() &&
annot.getKey("/Subtype").isName() &&
(only_subtype == annot.getKey("/Subtype").getName())))
if (annot.isDictionaryOfType("", only_subtype))
{
result.push_back(QPDFAnnotationObjectHelper(annot));
}

20
libqpdf/QPDFWriter.cc
View File

@ -1241,9 +1241,7 @@ QPDFWriter::enqueueObject(QPDFObjectHandle object)
" another file.");
}
if (this->m->qdf_mode &&
object.isStream() && object.getDict().getKey("/Type").isName() &&
(object.getDict().getKey("/Type").getName() == "/XRef"))
if (this->m->qdf_mode && object.isStreamOfType("/XRef"))
{
// As a special case, do not output any extraneous XRef
// streams in QDF mode. Doing so will confuse fix-qdf,
@ -1474,8 +1472,7 @@ QPDFWriter::willFilterStream(QPDFObjectHandle stream,
QPDFObjGen old_og = stream.getObjGen();
QPDFObjectHandle stream_dict = stream.getDict();
if (stream_dict.getKey("/Type").isName() &&
(stream_dict.getKey("/Type").getName() == "/Metadata"))
if (stream_dict.isDictionaryOfType("/Metadata"))
{
is_metadata = true;
}
@ -1691,11 +1688,8 @@ QPDFWriter::unparseObject(QPDFObjectHandle object, int level,
QTC::TC("qpdf", "QPDFWriter preserve Extensions");
QPDFObjectHandle adbe = extensions.getKey("/ADBE");
if (adbe.isDictionary() &&
adbe.hasKey("/BaseVersion") &&
adbe.getKey("/BaseVersion").isName() &&
(adbe.getKey("/BaseVersion").getName() ==
"/" + this->m->final_pdf_version) &&
adbe.hasKey("/ExtensionLevel") &&
adbe.getKey("/BaseVersion").isNameAndEquals(
"/" + this->m->final_pdf_version) &&
adbe.getKey("/ExtensionLevel").isInteger() &&
(adbe.getKey("/ExtensionLevel").getIntValue() ==
this->m->final_extension_level))
@ -1764,7 +1758,7 @@ QPDFWriter::unparseObject(QPDFObjectHandle object, int level,
for (int i = 0; i < filter.getArrayNItems(); ++i)
{
QPDFObjectHandle item = filter.getArrayItem(i);
if (item.isName() && item.getName() == "/Crypt")
if (item.isNameAndEquals("/Crypt"))
{
idx = i;
break;
@ -1802,9 +1796,7 @@ QPDFWriter::unparseObject(QPDFObjectHandle object, int level,
writeString(QPDF_Name::normalizeName(key));
writeString(" ");
if (key == "/Contents" &&
object.hasKey("/Type") &&
object.getKey("/Type").isName() &&
object.getKey("/Type").getName() == "/Sig" &&
object.isDictionaryOfType("/Sig") &&
object.hasKey("/ByteRange"))
{
QTC::TC("qpdf", "QPDFWriter no encryption sig contents");

6
libqpdf/QPDF_Stream.cc
View File

@ -35,10 +35,8 @@ class SF_Crypt: public QPDFStreamFilter
for (auto const& key: decode_parms.getKeys())
{
if (((key == "/Type") || (key == "/Name")) &&
(decode_parms.getKey("/Type").isNull() ||
(decode_parms.getKey("/Type").isName() &&
(decode_parms.getKey("/Type").getName() ==
"/CryptFilterDecodeParms"))))
((! decode_parms.hasKey("/Type")) ||
decode_parms.isDictionaryOfType("/CryptFilterDecodeParms")))
{
// we handle this in decryptStream
}

7
libqpdf/QPDF_encryption.cc
View File

@ -1262,9 +1262,7 @@ QPDF::decryptStream(PointerHolder<EncryptionParameters> encp,
{
QPDFObjectHandle decode_parms =
stream_dict.getKey("/DecodeParms");
if (decode_parms.getKey("/Type").isName() &&
(decode_parms.getKey("/Type").getName() ==
"/CryptFilterDecodeParms"))
if (decode_parms.isDictionaryOfType("/CryptFilterDecodeParms"))
{
QTC::TC("qpdf", "QPDF_encryption stream crypt filter");
method = interpretCF(encp, decode_parms.getKey("/Name"));
@ -1280,8 +1278,7 @@ QPDF::decryptStream(PointerHolder<EncryptionParameters> encp,
{
for (int i = 0; i < filter.getArrayNItems(); ++i)
{
if (filter.getArrayItem(i).isName() &&
(filter.getArrayItem(i).getName() == "/Crypt"))
if (filter.getArrayItem(i).isNameAndEquals("/Crypt"))
{
QPDFObjectHandle crypt_params =
decode.getArrayItem(i);

16
libqpdf/QPDF_optimization.cc
View File

@ -382,17 +382,13 @@ QPDF::updateObjectMapsInternal(
bool is_page_node = false;
if (oh.isDictionary() && oh.hasKey("/Type"))
if (oh.isDictionaryOfType("/Page"))
{
std::string type = oh.getKey("/Type").getName();
if (type == "/Page")
{
is_page_node = true;
if (! top)
{
return;
}
}
is_page_node = true;
if (! top)
{
return;
}
}
if (oh.isIndirect())

3
libqpdf/QPDF_pages.cc
View File

@ -139,8 +139,7 @@ QPDF::getAllPagesInternal(QPDFObjectHandle cur_node,
result.push_back(cur_node);
}
QPDFObjectHandle type_key = cur_node.getKey("/Type");
if (! (type_key.isName() && (type_key.getName() == wanted_type)))
if (! cur_node.isDictionaryOfType(wanted_type))
{
warn(QPDFExc(qpdf_e_damaged_pdf, this->m->file->getName(),
"page tree node",