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Handle File errors beyond FatFs.
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b21758781c
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@ -23,6 +23,12 @@
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#include <algorithm>
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/* Values added to FatFs FRESULT enum, values outside the FRESULT data type */
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static_assert(sizeof(FIL::err) == 1, "FatFs FIL::err size not expected.");
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#define FR_DISK_FULL (0x100)
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#define FR_EOF (0x101)
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#define FR_BAD_SEEK (0x102)
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File::File(
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const std::string& filename,
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openmode mode
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@ -64,6 +70,9 @@ bool File::read(void* const data, const size_t bytes_to_read) {
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UINT bytes_read = 0;
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err = f_read(&f, data, bytes_to_read, &bytes_read);
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if( bytes_read != bytes_to_read ) {
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err = FR_EOF;
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}
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return (err == FR_OK);
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}
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@ -74,6 +83,9 @@ bool File::write(const void* const data, const size_t bytes_to_write) {
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UINT bytes_written = 0;
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err = f_write(&f, data, bytes_to_write, &bytes_written);
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if( bytes_written != bytes_to_write ) {
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err = FR_DISK_FULL;
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}
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return (err == FR_OK);
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}
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@ -88,6 +100,7 @@ uint64_t File::seek(const uint64_t new_position) {
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f_close(&f);
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}
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if( f_tell(&f) != new_position ) {
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err = FR_BAD_SEEK;
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f_close(&f);
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}
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return old_position;
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@ -95,6 +108,9 @@ uint64_t File::seek(const uint64_t new_position) {
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bool File::puts(const std::string& string) {
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const auto result = f_puts(string.c_str(), &f);
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if( result != (int)string.size() ) {
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err = FR_DISK_FULL;
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}
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return (result >= 0);
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}
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@ -185,6 +201,9 @@ std::string filesystem_error::what() const {
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case FR_NOT_ENOUGH_CORE: return "not enough core";
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case FR_TOO_MANY_OPEN_FILES: return "too many open files";
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case FR_INVALID_PARAMETER: return "invalid parameter";
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case FR_EOF: return "end of file";
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case FR_DISK_FULL: return "disk full";
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case FR_BAD_SEEK: return "bad seek";
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default: return "unknown";
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}
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}
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