WAVFileWriter: Error handling while updating header.

This commit is contained in:
Jared Boone 2016-07-24 19:14:48 -07:00
parent ff17f8f293
commit c2d971d59e

View File

@ -85,8 +85,7 @@ public:
if( create_error.is_valid() ) {
return create_error;
} else {
update_header();
return { };
return update_header();
}
}
@ -142,15 +141,22 @@ private:
header_t header;
void update_header() {
Optional<File::Error> update_header() {
header.set_data_size(bytes_written);
auto seek_result = file.seek(0);
if( seek_result.is_error() ) {
return;
const auto seek_0_result = file.seek(0);
if( seek_0_result.is_error() ) {
return seek_0_result.error();
}
const auto old_position = seek_result.value();
file.write(&header, sizeof(header));
file.seek(old_position);
const auto old_position = seek_0_result.value();
const auto write_result = file.write(&header, sizeof(header));
if( write_result.is_error() ) {
return write_result.error();
}
const auto seek_old_result = file.seek(old_position);
if( seek_old_result.is_error() ) {
return seek_old_result.error();
}
return { };
}
};