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WAVFileWriter: Error handling while updating header.

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This commit is contained in:
Jared Boone 2016-07-24 19:14:48 -07:00
parent ff17f8f293
commit c2d971d59e
1 changed files with 15 additions and 9 deletions
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24
firmware/application/ui_record_view.cpp
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@ -85,8 +85,7 @@ public:
if( create_error.is_valid() ) { if( create_error.is_valid() ) {
return create_error; return create_error;
} else { } else {
update_header(); return update_header();
return { };
} }
} }
@ -142,15 +141,22 @@ private:
header_t header; header_t header;
void update_header() { Optional<File::Error> update_header() {
header.set_data_size(bytes_written); header.set_data_size(bytes_written);
auto seek_result = file.seek(0); const auto seek_0_result = file.seek(0);
if( seek_result.is_error() ) { if( seek_0_result.is_error() ) {
return; return seek_0_result.error();
} }
const auto old_position = seek_result.value(); const auto old_position = seek_0_result.value();
file.write(&header, sizeof(header)); const auto write_result = file.write(&header, sizeof(header));
file.seek(old_position); 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 { };
} }
}; };