diff options
Diffstat (limited to 'src/saveload')
| -rw-r--r-- | src/saveload/saveload.cpp | 93 |
1 files changed, 50 insertions, 43 deletions
diff --git a/src/saveload/saveload.cpp b/src/saveload/saveload.cpp index c953f5a4a..c0d1ac6ae 100644 --- a/src/saveload/saveload.cpp +++ b/src/saveload/saveload.cpp @@ -58,10 +58,16 @@ enum SaveLoadAction { SLA_SAVE, ///< saving }; +enum NeedLength { + NL_NONE = 0, ///< not working in NeedLength mode + NL_WANTLENGTH = 1, ///< writing length and data + NL_CALCLENGTH = 2, ///< need to calculate the length +}; + /** The saveload struct, containing reader-writer functions, bufffer, version, etc. */ struct SaveLoadParams { SaveLoadAction action; ///< are we doing a save or a load atm. - byte need_length; ///< ??? + NeedLength need_length; ///< working in NeedLength (Autolength) mode? byte block_mode; ///< ??? bool error; ///< did an error occur or not @@ -92,9 +98,6 @@ struct SaveLoadParams { static SaveLoadParams _sl; - -enum NeedLengthValues {NL_NONE = 0, NL_WANTLENGTH = 1, NL_CALCLENGTH = 2}; - /** Error handler, calls longjmp to simulate an exception. * @todo this was used to have a central place to handle errors, but it is * pretty ugly, and seriously interferes with any multithreaded approaches */ @@ -399,31 +402,35 @@ void SlSetLength(size_t length) assert(_sl.action == SLA_SAVE); switch (_sl.need_length) { - case NL_WANTLENGTH: - _sl.need_length = NL_NONE; - switch (_sl.block_mode) { - case CH_RIFF: - /* Ugly encoding of >16M RIFF chunks - * The lower 24 bits are normal - * The uppermost 4 bits are bits 24:27 */ - assert(length < (1 << 28)); - SlWriteUint32((uint32)((length & 0xFFFFFF) | ((length >> 24) << 28))); - break; - case CH_ARRAY: - assert(_sl.last_array_index <= _sl.array_index); - while (++_sl.last_array_index <= _sl.array_index) - SlWriteArrayLength(1); - SlWriteArrayLength(length + 1); + case NL_WANTLENGTH: + _sl.need_length = NL_NONE; + switch (_sl.block_mode) { + case CH_RIFF: + /* Ugly encoding of >16M RIFF chunks + * The lower 24 bits are normal + * The uppermost 4 bits are bits 24:27 */ + assert(length < (1 << 28)); + SlWriteUint32((uint32)((length & 0xFFFFFF) | ((length >> 24) << 28))); + break; + case CH_ARRAY: + assert(_sl.last_array_index <= _sl.array_index); + while (++_sl.last_array_index <= _sl.array_index) + SlWriteArrayLength(1); + SlWriteArrayLength(length + 1); + break; + case CH_SPARSE_ARRAY: + SlWriteArrayLength(length + 1 + SlGetArrayLength(_sl.array_index)); // Also include length of sparse index. + SlWriteSparseIndex(_sl.array_index); + break; + default: NOT_REACHED(); + } break; - case CH_SPARSE_ARRAY: - SlWriteArrayLength(length + 1 + SlGetArrayLength(_sl.array_index)); // Also include length of sparse index. - SlWriteSparseIndex(_sl.array_index); + + case NL_CALCLENGTH: + _sl.obj_len += (int)length; break; + default: NOT_REACHED(); - } break; - case NL_CALCLENGTH: - _sl.obj_len += (int)length; - break; } } @@ -950,7 +957,7 @@ void SlAutolength(AutolengthProc *proc, void *arg) { size_t offs; - assert(_sl.action == SL_SAVE); + assert(_sl.action == SLA_SAVE); /* Tell it to calculate the length */ _sl.need_length = NL_CALCLENGTH; @@ -1033,22 +1040,22 @@ static void SlSaveChunk(const ChunkHandler *ch) _sl.block_mode = ch->flags & CH_TYPE_MASK; switch (ch->flags & CH_TYPE_MASK) { - case CH_RIFF: - _sl.need_length = NL_WANTLENGTH; - proc(); - break; - case CH_ARRAY: - _sl.last_array_index = 0; - SlWriteByte(CH_ARRAY); - proc(); - SlWriteArrayLength(0); // Terminate arrays - break; - case CH_SPARSE_ARRAY: - SlWriteByte(CH_SPARSE_ARRAY); - proc(); - SlWriteArrayLength(0); // Terminate arrays - break; - default: NOT_REACHED(); + case CH_RIFF: + _sl.need_length = NL_WANTLENGTH; + proc(); + break; + case CH_ARRAY: + _sl.last_array_index = 0; + SlWriteByte(CH_ARRAY); + proc(); + SlWriteArrayLength(0); // Terminate arrays + break; + case CH_SPARSE_ARRAY: + SlWriteByte(CH_SPARSE_ARRAY); + proc(); + SlWriteArrayLength(0); // Terminate arrays + break; + default: NOT_REACHED(); } } |