4#include "../flac/flacmetadata.h"
6#include "../ogg/oggiterator.h"
8#include "../id3/id3v2frame.h"
10#include "../diagnostics.h"
11#include "../exceptions.h"
13#include <c++utilities/conversion/binaryconversion.h>
14#include <c++utilities/conversion/stringbuilder.h>
15#include <c++utilities/conversion/stringconversion.h>
16#include <c++utilities/io/binaryreader.h>
17#include <c++utilities/io/binarywriter.h>
50template <
class StreamType>
void VorbisCommentField::internalParse(StreamType &stream, std::uint64_t &maxSize,
Diagnostics &diag)
52 static const string context(
"parsing Vorbis comment field");
55 diag.emplace_back(
DiagLevel::Critical, argsToString(
"Field expected at ",
static_cast<std::streamoff
>(stream.tellg()),
'.'), context);
61 if (
const auto size = LE::toUInt32(buff)) {
62 if (size <= maxSize) {
65 auto data = make_unique<char[]>(size);
66 stream.read(data.get(), size);
67 std::uint32_t idSize = 0;
68 for (
const char *i = data.get(), *end = data.get() + size; i != end && *i !=
'='; ++i, ++idSize)
71 setId(
string(data.get(), idSize));
75 DiagLevel::Critical, argsToString(
"The field ID at ",
static_cast<std::streamoff
>(stream.tellg()),
" is empty."), context);
76 throw InvalidDataException();
80 auto decoded = decodeBase64(data.get() + idSize + 1, size - idSize - 1);
81 stringstream bufferStream(ios_base::in | ios_base::out | ios_base::binary);
82 bufferStream.exceptions(ios_base::failbit | ios_base::badbit);
83 bufferStream.rdbuf()->pubsetbuf(
reinterpret_cast<char *
>(decoded.first.get()), decoded.second);
84 FlacMetaDataBlockPicture pictureBlock(
value());
85 pictureBlock.parse(bufferStream, decoded.second);
87 }
catch (
const TruncatedDataException &) {
90 }
catch (
const ConversionException &) {
91 diag.emplace_back(
DiagLevel::Critical,
"Base64 coding of METADATA_BLOCK_PICTURE is invalid.", context);
92 throw InvalidDataException();
93 }
catch (
const std::ios_base::failure &failure) {
95 argsToString(
"An IO error occurred when reading the METADATA_BLOCK_PICTURE struct: ", failure.what()), context);
98 }
else if (
id().size() + 1 < size) {
103 diag.emplace_back(
DiagLevel::Critical, argsToString(
"Field at ",
static_cast<std::streamoff
>(stream.tellg()),
" is truncated."), context);
104 throw TruncatedDataException();
122 internalParse(iterator, maxSize, diag);
137 internalParse(iterator, maxSize, diag);
152 internalParse(stream, maxSize, diag);
166 static const string context(
"making Vorbis comment field");
179 diag.emplace_back(
DiagLevel::Critical,
"Assigned value of cover field is not picture data.", context);
187 auto buffer = make_unique<char[]>(requiredSize);
188 stringstream bufferStream(ios_base::in | ios_base::out | ios_base::binary);
189 bufferStream.exceptions(ios_base::failbit | ios_base::badbit);
190 bufferStream.rdbuf()->pubsetbuf(buffer.get(), requiredSize);
192 pictureBlock.
make(bufferStream);
193 valueString = encodeBase64(
reinterpret_cast<std::uint8_t *
>(buffer.get()), requiredSize);
195 diag.emplace_back(
DiagLevel::Critical,
"Unable to make METADATA_BLOCK_PICTURE struct from the assigned value.", context);
197 }
catch (
const std::ios_base::failure &failure) {
199 argsToString(
"An IO error occurred when writing the METADATA_BLOCK_PICTURE struct: ", failure.what()), context);
206 const auto size(valueString.size() +
id().size() + 1);
207 if (size > numeric_limits<std::uint32_t>::max()) {
208 diag.emplace_back(
DiagLevel::Critical,
"Assigned value exceeds the maximum size.", context);
211 writer.writeUInt32LE(
static_cast<std::uint32_t
>(size));
212 writer.writeString(
id());
213 writer.writeChar(
'=');
214 writer.writeString(valueString);
215 }
catch (
const ConversionException &) {
216 diag.emplace_back(
DiagLevel::Critical,
"Assigned value can not be converted appropriately.", context);
The Diagnostics class is a container for DiagMessage.
The class inherits from std::exception and serves as base class for exceptions thrown by the elements...
The exception that is thrown when the data to be parsed or to be made seems invalid and therefore can...
The OggIterator class helps iterating through all segments of an OGG bitstream.
std::uint64_t currentCharacterOffset() const
Returns the offset of the current character in the input stream if the iterator is valid; otherwise a...
std::uint64_t streamSize() const
Returns the stream size (which has been specified when constructing the iterator).
The TagField class is used by FieldMapBasedTag to store the fields.
void setTypeInfo(const TypeInfoType &typeInfo)
Sets the type info of the current TagField.
const TypeInfoType & typeInfo() const
Returns the type info of the current TagField.
void setValue(const TagValue &value)
Sets the value of the current TagField.
void setId(const IdentifierType &id)
Sets the id of the current Tag Field.
TagValue & value()
Returns the value of the current TagField.
The TagValue class wraps values of different types.
std::string toString(TagTextEncoding encoding=TagTextEncoding::Unspecified) const
Converts the value of the current TagValue object to its equivalent std::string representation.
The exception that is thrown when the data to be parsed is truncated and therefore can not be parsed ...
Contains all classes and functions of the TagInfo library.
VorbisCommentFlags
The VorbisCommentFlags enum specifies flags which controls parsing and making of Vorbis comments.