unsigned long long File::size() const {
if (hasValidSnapshotMetadata())
return m_snapshotSize;
// FIXME: JavaScript cannot represent sizes as large as unsigned long long, we
// need to come up with an exception to throw if file size is not
// representable.
long long size;
if (!hasBackingFile() || !getFileSize(m_path, size))
return 0;
return static_cast<unsigned long long>(size);
}
double File::lastModifiedMS() const {
if (hasValidSnapshotMetadata() &&
isValidFileTime(m_snapshotModificationTimeMS))
return m_snapshotModificationTimeMS;
double modificationTimeMS;
if (hasBackingFile() && getFileModificationTime(m_path, modificationTimeMS) &&
isValidFileTime(modificationTimeMS))
return modificationTimeMS;
return currentTimeMS();
}
double File::lastModifiedDate() const
{
#if ENABLE(FILE_SYSTEM)
if (hasValidSnapshotMetadata() && isValidFileTime(m_snapshotModificationTime))
return m_snapshotModificationTime * msPerSecond;
#endif
time_t modificationTime;
if (getFileModificationTime(m_path, modificationTime) && isValidFileTime(modificationTime))
return modificationTime * msPerSecond;
return currentTime() * msPerSecond;
}
unsigned long long File::size() const
{
#if ENABLE(FILE_SYSTEM)
if (hasValidSnapshotMetadata())
return m_snapshotSize;
#endif
// FIXME: JavaScript cannot represent sizes as large as unsigned long long, we need to
// come up with an exception to throw if file size is not representable.
long long size;
if (!getFileSize(m_path, size))
return 0;
return static_cast<unsigned long long>(size);
}
double File::lastModifiedDate() const
{
#if ENABLE(FILE_SYSTEM)
if (hasValidSnapshotMetadata())
return m_snapshotModificationTime * 1000.0;
#endif
time_t modificationTime;
if (!getFileModificationTime(m_path, modificationTime))
return invalidFileTime();
// Needs to return epoch time in milliseconds for Date.
return modificationTime * 1000.0;
}
void File::captureSnapshot(long long& snapshotSize, double& snapshotModificationTime) const
{
#if ENABLE(FILE_SYSTEM)
if (hasValidSnapshotMetadata()) {
snapshotSize = m_snapshotSize;
snapshotModificationTime = m_snapshotModificationTime;
return;
}
#endif
// Obtains a snapshot of the file by capturing its current size and modification time. This is used when we slice a file for the first time.
// If we fail to retrieve the size or modification time, probably due to that the file has been deleted, 0 size is returned.
FileMetadata metadata;
if (!getFileMetadata(m_path, metadata)) {
snapshotSize = 0;
snapshotModificationTime = invalidFileTime();
return;
}
snapshotSize = metadata.length;
snapshotModificationTime = metadata.modificationTime;
}
