/*!
* \brief Parses the "EditionEntry"-element specified when constructing the object.
*
* Fetches the chapters() but does not parse them.
*
* Clears all previous parsing results.
*/
void MatroskaEditionEntry::parse(Diagnostics &diag)
{
// clear previous values and status
static const string context("parsing \"EditionEntry\"-element");
clear();
// iterate through children of "EditionEntry"-element
EbmlElement *entryChild = m_editionEntryElement->firstChild();
while (entryChild) {
entryChild->parse(diag);
switch (entryChild->id()) {
case MatroskaIds::EditionUID:
m_id = entryChild->readUInteger();
break;
case MatroskaIds::EditionFlagHidden:
m_hidden = entryChild->readUInteger() == 1;
break;
case MatroskaIds::EditionFlagDefault:
m_default = entryChild->readUInteger() == 1;
break;
case MatroskaIds::EditionFlagOrdered:
m_ordered = entryChild->readUInteger() == 1;
break;
case MatroskaIds::ChapterAtom:
m_chapters.emplace_back(make_unique<MatroskaChapter>(entryChild));
break;
default:
diag.emplace_back(DiagLevel::Warning,
"\"EditionEntry\"-element contains unknown child element \"" % entryChild->idToString() + "\" which will be ingored.", context);
}
entryChild = entryChild->nextSibling();
}
}
/*!
* \brief Parses field information from the specified EbmlElement.
*
* The specified atom should be a simple tag element. These elements
* represents the fields of a MatroskaTag.
*
* \throws Throws std::ios_base::failure when an IO error occurs.
* \throws Throws TagParser::Failure or a derived exception when a parsing
* error occurs.
*/
void MatroskaTagField::reparse(EbmlElement &simpleTagElement, Diagnostics &diag, bool parseNestedFields)
{
string context("parsing Matroska tag field");
simpleTagElement.parse(diag);
bool tagDefaultFound = false;
for (EbmlElement *child = simpleTagElement.firstChild(); child; child = child->nextSibling()) {
try {
child->parse(diag);
} catch (const Failure &) {
diag.emplace_back(DiagLevel::Critical, "Unable to parse children of \"SimpleTag\"-element.", context);
break;
}
switch (child->id()) {
case MatroskaIds::TagName:
if (id().empty()) {
setId(child->readString());
context = "parsing Matroska tag field " + id();
} else {
diag.emplace_back(DiagLevel::Warning,
"\"SimpleTag\"-element contains multiple \"TagName\"-elements. Surplus TagName elements will be ignored.", context);
}
break;
case MatroskaIds::TagString:
case MatroskaIds::TagBinary:
if (value().isEmpty()) {
unique_ptr<char[]> buffer = make_unique<char[]>(child->dataSize());
child->stream().seekg(static_cast<streamoff>(child->dataOffset()));
child->stream().read(buffer.get(), static_cast<streamoff>(child->dataSize()));
switch (child->id()) {
case MatroskaIds::TagString:
value().assignData(move(buffer), child->dataSize(), TagDataType::Text, TagTextEncoding::Utf8);
break;
case MatroskaIds::TagBinary:
value().assignData(move(buffer), child->dataSize(), TagDataType::Undefined);
break;
}
} else {
diag.emplace_back(DiagLevel::Warning,
"\"SimpleTag\"-element contains multiple \"TagString\"/\"TagBinary\"-elements. Surplus \"TagName\"/\"TagBinary\"-elements will "
"be ignored.",
context);
}
break;
case MatroskaIds::TagLanguage:
if (value().language().empty() || value().language() == "und") {
string lng = child->readString();
if (lng != "und") {
value().setLanguage(lng);
}
} else {
diag.emplace_back(DiagLevel::Warning,
"\"SimpleTag\"-element contains multiple \"TagLanguage\"-elements. Surplus \"TagLanguage\"-elements will be ignored.", context);
}
break;
case MatroskaIds::TagDefault:
if (!tagDefaultFound) {
setDefault(child->readUInteger() > 0);
tagDefaultFound = true;
} else {
diag.emplace_back(DiagLevel::Warning,
"\"SimpleTag\"-element contains multiple \"TagDefault\" elements. Surplus \"TagDefault\"-elements will be ignored.", context);
}
break;
case MatroskaIds::SimpleTag:
if (parseNestedFields) {
nestedFields().emplace_back();
nestedFields().back().reparse(*child, diag, true);
} else {
diag.emplace_back(DiagLevel::Warning,
"Nested fields are currently not supported. Nested tags can not be displayed and will be discarded when rewriting the file.",
context);
}
break;
case EbmlIds::Crc32:
case EbmlIds::Void:
break;
default:
diag.emplace_back(DiagLevel::Warning,
argsToString(
"\"SimpleTag\"-element contains unknown element ", child->idToString(), " at ", child->startOffset(), ". It will be ignored."),
context);
}
}
}