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authorsmatz <smatz@openttd.org>2009-05-17 11:43:51 +0000
committersmatz <smatz@openttd.org>2009-05-17 11:43:51 +0000
commit4876e346d5d3ce43def851ea8d96aa8857d810b4 (patch)
tree29d7ff210115e0b1d9cfeaf22c988278acaa111f /src/saveload
parent88201ccd5cd1cc6a5def1ecc9e42291399cd3c37 (diff)
downloadopenttd-4876e346d5d3ce43def851ea8d96aa8857d810b4.tar.xz
(svn r16334) -Codechange: use NeedLength enum
Diffstat (limited to 'src/saveload')
-rw-r--r--src/saveload/saveload.cpp93
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();
}
}