QString KExiv2::getIptcTagString(const char* iptcTagName, bool escapeCR) const
{
try
{
Exiv2::IptcKey iptcKey(iptcTagName);
Exiv2::IptcData iptcData(d->iptcMetadata());
Exiv2::IptcData::iterator it = iptcData.findKey(iptcKey);
if (it != iptcData.end())
{
std::ostringstream os;
os << *it;
QString tagValue(os.str().c_str());
if (escapeCR)
tagValue.replace('\n', ' ');
return tagValue;
}
}
catch( Exiv2::Error& e )
{
d->printExiv2ExceptionError(QString("Cannot find Iptc key '%1' into image using Exiv2 ")
.arg(iptcTagName), e);
}
return QString();
}
Iptcdatum& IptcData::operator[](const std::string& key)
{
IptcKey iptcKey(key);
iterator pos = findKey(iptcKey);
if (pos == end()) {
add(Iptcdatum(iptcKey));
pos = findKey(iptcKey);
}
return *pos;
}
// Always creates a new metadata entry.
// Passing invalidTypeId causes the type to be guessed.
// Guessing types is accurate for IPTC, but not for EXIF.
// Returns 0 on success
EXIVSIMPLE_API int AddMeta(HIMAGE img, const char *key, const char *val, DllTypeId type)
{
assert(img && key && val);
if (img==0 || key==0 || val==0) return -1;
ImageWrapper *imgWrap = (ImageWrapper*)img;
int rc = 2;
Exiv2::IptcData &iptcData = imgWrap->image->iptcData();
Exiv2::ExifData &exifData = imgWrap->image->exifData();
std::string data(val);
{
size_t dataLen = data.length();
// if data starts and ends with quotes, remove them
if (dataLen > 1 && *(data.begin()) == '\"' && *(data.rbegin()) == '\"') {
data = data.substr(1, dataLen-2);
}
}
try {
Exiv2::IptcKey iptcKey(key);
rc = 1;
if (type == invalidTypeId)
type = (DllTypeId)Exiv2::IptcDataSets::dataSetType(iptcKey.tag(), iptcKey.record());
Exiv2::Value::AutoPtr value = Exiv2::Value::create((Exiv2::TypeId)type);
value->read(data);
rc = iptcData.add(iptcKey, value.get());
}
catch(const Exiv2::AnyError&) {
}
if (rc) {
// Failed with iptc, so try exif
try {
Exiv2::ExifKey exifKey(key);
rc = 1;
// No way to get value type for exif... string is the most common
if (type == invalidTypeId)
type = asciiString;
Exiv2::Value::AutoPtr value = Exiv2::Value::create((Exiv2::TypeId)type);
value->read(data);
exifData.add(exifKey, value.get());
rc = 0;
}
catch(const Exiv2::AnyError&) {
}
}
return rc;
}
// This is weird because iptc and exif have not been "unified". Once
// they are unified, this DLL should not have to know
// about either... just generic images, keys, values, etc.
//
// buffsize should be the total size of *buff (including space for null)
// Note that if there is more than one entry (for some IPTC datasets) this
// returns the first one found. Currently no way to get the others.
// Returns 0 on success
EXIVSIMPLE_API int ReadMeta(HIMAGE img, const char *key, char *buff, int buffsize)
{
assert(img && key && buff);
if (img==0 || key==0 || buff==0 || buffsize==0) return -1;
ImageWrapper *imgWrap = (ImageWrapper*)img;
int rc = 2;
Exiv2::IptcData &iptcData = imgWrap->image->iptcData();
Exiv2::ExifData &exifData = imgWrap->image->exifData();
try {
// First try iptc
Exiv2::IptcKey iptcKey(key);
rc = 1;
Exiv2::IptcData::const_iterator iter = iptcData.findKey(iptcKey);
if (iter != iptcData.end()) {
strncpy(buff, iter->value().toString().c_str(), buffsize);
buff[buffsize-1] = 0;
rc = 0;
}
}
catch(const Exiv2::AnyError&) {
}
if (rc) {
// No iptc value, so try exif
try {
Exiv2::ExifKey exifKey(key);
rc = 1;
Exiv2::ExifData::const_iterator iter = exifData.findKey(exifKey);
if (iter != exifData.end()) {
strncpy(buff, iter->value().toString().c_str(), buffsize);
buff[buffsize-1] = 0;
rc = 0;
}
}
catch(const Exiv2::AnyError&) {
}
}
return rc;
}
// If multiple entires exist, this only remove the first one
// found. Call multiple times to remove many.
// Returns 0 on success
EXIVSIMPLE_API int RemoveMeta(HIMAGE img, const char *key)
{
assert(img && key);
if (img==0 || key==0) return -1;
ImageWrapper *imgWrap = (ImageWrapper*)img;
int rc = 2;
Exiv2::IptcData &iptcData = imgWrap->image->iptcData();
Exiv2::ExifData &exifData = imgWrap->image->exifData();
try {
Exiv2::IptcKey iptcKey(key);
rc = 1;
Exiv2::IptcData::iterator iter = iptcData.findKey(iptcKey);
if (iter != iptcData.end()) {
iptcData.erase(iter);
rc = 0;
}
}
catch(const Exiv2::AnyError&) {
}
if (rc) {
// No iptc value, so try exif
try {
Exiv2::ExifKey exifKey(key);
rc = 1;
Exiv2::ExifData::iterator iter = exifData.findKey(exifKey);
if (iter != exifData.end()) {
exifData.erase(iter);
rc = 0;
}
}
catch(const Exiv2::AnyError&) {
}
}
return rc;
}
QByteArray KExiv2::getIptcTagData(const char* iptcTagName) const
{
try
{
Exiv2::IptcKey iptcKey(iptcTagName);
Exiv2::IptcData iptcData(d->iptcMetadata());
Exiv2::IptcData::iterator it = iptcData.findKey(iptcKey);
if (it != iptcData.end())
{
char *s = new char[(*it).size()];
(*it).copy((Exiv2::byte*)s, Exiv2::bigEndian);
QByteArray data(s, (*it).size());
delete [] s;
return data;
}
}
catch( Exiv2::Error& e )
{
d->printExiv2ExceptionError(QString("Cannot find Iptc key '%1' into image using Exiv2 ")
.arg(iptcTagName), e);
}
return QByteArray();
}
// Overwrites existing value if found, otherwise creates a new one.
// Passing invalidTypeId causes the type to be guessed.
// Guessing types is accurate for IPTC, but not for EXIF.
// Returns 0 on success
EXIVSIMPLE_API int ModifyMeta(HIMAGE img, const char *key, const char *val, DllTypeId type)
{
assert(img && key && val);
if (img==0 || key==0 || val==0) return -1;
ImageWrapper *imgWrap = (ImageWrapper*)img;
int rc = 2;
Exiv2::IptcData &iptcData = imgWrap->image->iptcData();
Exiv2::ExifData &exifData = imgWrap->image->exifData();
std::string data(val);
// if data starts and ends with quotes, remove them
if (data.at(0) == '\"' && data.at(data.size()-1) == '\"') {
data = data.substr(1, data.size()-2);
}
try {
Exiv2::IptcKey iptcKey(key);
rc = 1;
if (type == invalidTypeId)
type = (DllTypeId)Exiv2::IptcDataSets::dataSetType(iptcKey.tag(), iptcKey.record());
Exiv2::Value::AutoPtr value = Exiv2::Value::create((Exiv2::TypeId)type);
value->read(data);
Exiv2::IptcData::iterator iter = iptcData.findKey(iptcKey);
if (iter != iptcData.end()) {
iter->setValue(value.get());
rc = 0;
}
else {
rc = iptcData.add(iptcKey, value.get());
}
}
catch(const Exiv2::AnyError&) {
}
if (rc) {
// Failed with iptc, so try exif
try {
Exiv2::ExifKey exifKey(key);
rc = 1;
// No way to get value type for exif... string is the most common
if (type == invalidTypeId)
type = asciiString;
Exiv2::Value::AutoPtr value = Exiv2::Value::create((Exiv2::TypeId)type);
value->read(data);
Exiv2::ExifData::iterator iter = exifData.findKey(exifKey);
if (iter != exifData.end()) {
iter->setValue(value.get());
rc = 0;
}
else {
exifData.add(exifKey, value.get());
rc = 0;
}
}
catch(const Exiv2::AnyError&) {
}
}
return rc;
}
