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https://github.com/OpenTTD/OpenTTD.git
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(svn r16331) -Codechange: replace _sl.save by an enum
This commit is contained in:
smatz
parent
b23c967230
commit
3322cc978f
@ -52,9 +52,15 @@ char _savegame_format[8]; ///< how to compress savegames
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typedef void WriterProc(size_t len);
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typedef size_t ReaderProc();
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/** What are we currently doing? */
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enum SaveLoadAction {
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SLA_LOAD, ///< loading
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SLA_SAVE, ///< saving
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};
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/** The saveload struct, containing reader-writer functions, bufffer, version, etc. */
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static struct {
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bool save; ///< are we doing a save or a load atm. True when saving
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struct SaveLoadParams {
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SaveLoadAction action; ///< are we doing a save or a load atm.
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byte need_length; ///< ???
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byte block_mode; ///< ???
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bool error; ///< did an error occur or not
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@ -82,7 +88,9 @@ static struct {
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void (*excpt_uninit)(); ///< the function to execute on any encountered error
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StringID error_str; ///< the translateable error message to show
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char *extra_msg; ///< the error message
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} _sl;
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};
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static SaveLoadParams _sl;
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enum NeedLengthValues {NL_NONE = 0, NL_WANTLENGTH = 1, NL_CALCLENGTH = 2};
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@ -388,7 +396,7 @@ int SlIterateArray()
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*/
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void SlSetLength(size_t length)
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{
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assert(_sl.save);
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assert(_sl.action == SLA_SAVE);
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switch (_sl.need_length) {
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case NL_WANTLENGTH:
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@ -427,12 +435,16 @@ void SlSetLength(size_t length)
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*/
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static void SlCopyBytes(void *ptr, size_t length)
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{
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byte *p = (byte*)ptr;
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byte *p = (byte *)ptr;
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if (_sl.save) {
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for (; length != 0; length--) {SlWriteByteInternal(*p++);}
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} else {
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for (; length != 0; length--) {*p++ = SlReadByteInternal();}
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switch (_sl.action) {
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case SLA_LOAD:
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for (; length != 0; length--) { *p++ = SlReadByteInternal(); }
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break;
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case SLA_SAVE:
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for (; length != 0; length--) { SlWriteByteInternal(*p++); }
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break;
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default: NOT_REACHED();
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}
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}
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@ -506,43 +518,46 @@ void WriteValue(void *ptr, VarType conv, int64 val)
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*/
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static void SlSaveLoadConv(void *ptr, VarType conv)
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{
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int64 x = 0;
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switch (_sl.action) {
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case SLA_SAVE: {
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int64 x = ReadValue(ptr, conv);
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if (_sl.save) { // SAVE values
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/* Read a value from the struct. These ARE endian safe. */
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x = ReadValue(ptr, conv);
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/* Write the value to the file and check if its value is in the desired range */
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switch (GetVarFileType(conv)) {
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case SLE_FILE_I8: assert(x >= -128 && x <= 127); SlWriteByte(x);break;
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case SLE_FILE_U8: assert(x >= 0 && x <= 255); SlWriteByte(x);break;
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case SLE_FILE_I16:assert(x >= -32768 && x <= 32767); SlWriteUint16(x);break;
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case SLE_FILE_STRINGID:
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case SLE_FILE_U16:assert(x >= 0 && x <= 65535); SlWriteUint16(x);break;
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case SLE_FILE_I32:
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case SLE_FILE_U32: SlWriteUint32((uint32)x);break;
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case SLE_FILE_I64:
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case SLE_FILE_U64: SlWriteUint64(x);break;
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default: NOT_REACHED();
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/* Write the value to the file and check if its value is in the desired range */
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switch (GetVarFileType(conv)) {
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case SLE_FILE_I8: assert(x >= -128 && x <= 127); SlWriteByte(x);break;
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case SLE_FILE_U8: assert(x >= 0 && x <= 255); SlWriteByte(x);break;
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case SLE_FILE_I16:assert(x >= -32768 && x <= 32767); SlWriteUint16(x);break;
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case SLE_FILE_STRINGID:
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case SLE_FILE_U16:assert(x >= 0 && x <= 65535); SlWriteUint16(x);break;
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case SLE_FILE_I32:
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case SLE_FILE_U32: SlWriteUint32((uint32)x);break;
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case SLE_FILE_I64:
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case SLE_FILE_U64: SlWriteUint64(x);break;
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default: NOT_REACHED();
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}
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break;
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}
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} else { // LOAD values
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case SLA_LOAD: {
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int64 x;
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/* Read a value from the file */
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switch (GetVarFileType(conv)) {
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case SLE_FILE_I8: x = (int8 )SlReadByte(); break;
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case SLE_FILE_U8: x = (byte )SlReadByte(); break;
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case SLE_FILE_I16: x = (int16 )SlReadUint16(); break;
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case SLE_FILE_U16: x = (uint16)SlReadUint16(); break;
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case SLE_FILE_I32: x = (int32 )SlReadUint32(); break;
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case SLE_FILE_U32: x = (uint32)SlReadUint32(); break;
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case SLE_FILE_I64: x = (int64 )SlReadUint64(); break;
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case SLE_FILE_U64: x = (uint64)SlReadUint64(); break;
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case SLE_FILE_STRINGID: x = RemapOldStringID((uint16)SlReadUint16()); break;
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default: NOT_REACHED();
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}
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/* Read a value from the file */
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switch (GetVarFileType(conv)) {
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case SLE_FILE_I8: x = (int8 )SlReadByte(); break;
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case SLE_FILE_U8: x = (byte )SlReadByte(); break;
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case SLE_FILE_I16: x = (int16 )SlReadUint16(); break;
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case SLE_FILE_U16: x = (uint16)SlReadUint16(); break;
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case SLE_FILE_I32: x = (int32 )SlReadUint32(); break;
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case SLE_FILE_U32: x = (uint32)SlReadUint32(); break;
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case SLE_FILE_I64: x = (int64 )SlReadUint64(); break;
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case SLE_FILE_U64: x = (uint64)SlReadUint64(); break;
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case SLE_FILE_STRINGID: x = RemapOldStringID((uint16)SlReadUint16()); break;
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default: NOT_REACHED();
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/* Write The value to the struct. These ARE endian safe. */
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WriteValue(ptr, conv, x);
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break;
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}
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/* Write The value to the struct. These ARE endian safe. */
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WriteValue(ptr, conv, x);
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default: NOT_REACHED();
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}
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}
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@ -596,55 +611,60 @@ static inline size_t SlCalcStringLen(const void *ptr, size_t length, VarType con
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* @param conv must be SLE_FILE_STRING */
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static void SlString(void *ptr, size_t length, VarType conv)
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{
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size_t len;
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switch (_sl.action) {
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case SLA_SAVE: {
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size_t len;
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switch (GetVarMemType(conv)) {
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default: NOT_REACHED();
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case SLE_VAR_STRB:
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case SLE_VAR_STRBQ:
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len = SlCalcNetStringLen((char *)ptr, length);
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break;
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case SLE_VAR_STR:
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case SLE_VAR_STRQ:
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ptr = *(char **)ptr;
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len = SlCalcNetStringLen((char *)ptr, SIZE_MAX);
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break;
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}
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if (_sl.save) { // SAVE string
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switch (GetVarMemType(conv)) {
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default: NOT_REACHED();
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case SLE_VAR_STRB:
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case SLE_VAR_STRBQ:
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len = SlCalcNetStringLen((char*)ptr, length);
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break;
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case SLE_VAR_STR:
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case SLE_VAR_STRQ:
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ptr = *(char**)ptr;
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len = SlCalcNetStringLen((char*)ptr, SIZE_MAX);
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break;
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SlWriteArrayLength(len);
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SlCopyBytes(ptr, len);
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break;
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}
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case SLA_LOAD: {
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size_t len = SlReadArrayLength();
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SlWriteArrayLength(len);
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SlCopyBytes(ptr, len);
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} else { // LOAD string
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len = SlReadArrayLength();
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switch (GetVarMemType(conv)) {
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default: NOT_REACHED();
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case SLE_VAR_STRB:
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case SLE_VAR_STRBQ:
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if (len >= length) {
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DEBUG(sl, 1, "String length in savegame is bigger than buffer, truncating");
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SlCopyBytes(ptr, length);
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SlSkipBytes(len - length);
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len = length - 1;
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} else {
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SlCopyBytes(ptr, len);
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}
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break;
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case SLE_VAR_STR:
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case SLE_VAR_STRQ: // Malloc'd string, free previous incarnation, and allocate
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free(*(char **)ptr);
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if (len == 0) {
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*(char **)ptr = NULL;
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} else {
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*(char **)ptr = MallocT<char>(len + 1); // terminating '\0'
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ptr = *(char **)ptr;
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SlCopyBytes(ptr, len);
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}
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break;
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}
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switch (GetVarMemType(conv)) {
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default: NOT_REACHED();
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case SLE_VAR_STRB:
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case SLE_VAR_STRBQ:
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if (len >= length) {
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DEBUG(sl, 1, "String length in savegame is bigger than buffer, truncating");
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SlCopyBytes(ptr, length);
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SlSkipBytes(len - length);
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len = length - 1;
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} else {
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SlCopyBytes(ptr, len);
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}
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break;
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case SLE_VAR_STR:
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case SLE_VAR_STRQ: // Malloc'd string, free previous incarnation, and allocate
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free(*(char**)ptr);
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if (len == 0) {
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*(char**)ptr = NULL;
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} else {
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*(char**)ptr = MallocT<char>(len + 1); // terminating '\0'
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ptr = *(char**)ptr;
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SlCopyBytes(ptr, len);
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}
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break;
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((char *)ptr)[len] = '\0'; // properly terminate the string
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str_validate((char *)ptr, (char *)ptr + len);
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break;
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}
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((char*)ptr)[len] = '\0'; // properly terminate the string
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str_validate((char*)ptr, (char*)ptr + len);
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default: NOT_REACHED();
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}
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}
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@ -675,7 +695,7 @@ void SlArray(void *array, size_t length, VarType conv)
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/* NOTICE - handle some buggy stuff, in really old versions everything was saved
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* as a byte-type. So detect this, and adjust array size accordingly */
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if (!_sl.save && _sl_version == 0) {
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if (_sl.action != SLA_SAVE && _sl_version == 0) {
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/* all arrays except difficulty settings */
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if (conv == SLE_INT16 || conv == SLE_UINT16 || conv == SLE_STRINGID ||
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conv == SLE_INT32 || conv == SLE_UINT32) {
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@ -742,22 +762,28 @@ void SlList(void *list, SLRefType conv)
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std::list<void *> *l = (std::list<void *> *) list;
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if (_sl.save) {
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SlWriteUint32((uint32)l->size());
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switch (_sl.action) {
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case SLA_SAVE: {
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SlWriteUint32((uint32)l->size());
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std::list<void *>::iterator iter;
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for (iter = l->begin(); iter != l->end(); ++iter) {
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void *ptr = *iter;
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SlWriteUint32(ReferenceToInt(ptr, conv));
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std::list<void *>::iterator iter;
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for (iter = l->begin(); iter != l->end(); ++iter) {
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void *ptr = *iter;
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SlWriteUint32(ReferenceToInt(ptr, conv));
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}
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break;
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}
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} else {
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uint length = CheckSavegameVersion(69) ? SlReadUint16() : SlReadUint32();
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case SLA_LOAD: {
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uint length = CheckSavegameVersion(69) ? SlReadUint16() : SlReadUint32();
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/* Load each reference and push to the end of the list */
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for (uint i = 0; i < length; i++) {
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void *ptr = IntToReference(CheckSavegameVersion(69) ? SlReadUint16() : SlReadUint32(), conv);
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l->push_back(ptr);
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/* Load each reference and push to the end of the list */
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for (uint i = 0; i < length; i++) {
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void *ptr = IntToReference(CheckSavegameVersion(69) ? SlReadUint16() : SlReadUint32(), conv);
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l->push_back(ptr);
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}
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break;
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}
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default: NOT_REACHED();
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}
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}
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@ -776,7 +802,7 @@ static inline bool SlIsObjectValidInSavegame(const SaveLoad *sld)
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* bytestream itself as well, so there is no need to skip it somewhere else */
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static inline bool SlSkipVariableOnLoad(const SaveLoad *sld)
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{
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if ((sld->conv & SLF_NETWORK_NO) && !_sl.save && _networking && !_network_server) {
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if ((sld->conv & SLF_NETWORK_NO) && _sl.action != SLA_SAVE && _networking && !_network_server) {
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SlSkipBytes(SlCalcConvMemLen(sld->conv) * sld->length);
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return true;
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}
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@ -803,7 +829,7 @@ size_t SlCalcObjLength(const void *object, const SaveLoad *sld)
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size_t SlCalcObjMemberLength(const void *object, const SaveLoad *sld)
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{
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assert(_sl.save);
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assert(_sl.action == SLA_SAVE);
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switch (sld->cmd) {
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case SL_VAR:
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@ -815,12 +841,12 @@ size_t SlCalcObjMemberLength(const void *object, const SaveLoad *sld)
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if (!SlIsObjectValidInSavegame(sld)) break;
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switch (sld->cmd) {
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case SL_VAR: return SlCalcConvFileLen(sld->conv);
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case SL_REF: return SlCalcRefLen();
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case SL_ARR: return SlCalcArrayLen(sld->length, sld->conv);
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case SL_STR: return SlCalcStringLen(GetVariableAddress(object, sld), sld->length, sld->conv);
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case SL_LST: return SlCalcListLen(GetVariableAddress(object, sld));
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default: NOT_REACHED();
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case SL_VAR: return SlCalcConvFileLen(sld->conv);
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case SL_REF: return SlCalcRefLen();
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case SL_ARR: return SlCalcArrayLen(sld->length, sld->conv);
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case SL_STR: return SlCalcStringLen(GetVariableAddress(object, sld), sld->length, sld->conv);
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case SL_LST: return SlCalcListLen(GetVariableAddress(object, sld));
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default: NOT_REACHED();
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}
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break;
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case SL_WRITEBYTE: return 1; // a byte is logically of size 1
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@ -835,49 +861,54 @@ bool SlObjectMember(void *ptr, const SaveLoad *sld)
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{
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VarType conv = GB(sld->conv, 0, 8);
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switch (sld->cmd) {
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case SL_VAR:
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case SL_REF:
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case SL_ARR:
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case SL_STR:
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case SL_LST:
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/* CONDITIONAL saveload types depend on the savegame version */
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if (!SlIsObjectValidInSavegame(sld)) return false;
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if (SlSkipVariableOnLoad(sld)) return false;
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case SL_VAR:
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case SL_REF:
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case SL_ARR:
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case SL_STR:
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case SL_LST:
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/* CONDITIONAL saveload types depend on the savegame version */
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if (!SlIsObjectValidInSavegame(sld)) return false;
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if (SlSkipVariableOnLoad(sld)) return false;
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switch (sld->cmd) {
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case SL_VAR: SlSaveLoadConv(ptr, conv); break;
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case SL_REF: // Reference variable, translate
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if (_sl.save) {
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SlWriteUint32(ReferenceToInt(*(void**)ptr, (SLRefType)conv));
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} else {
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*(void**)ptr = IntToReference(CheckSavegameVersion(69) ? SlReadUint16() : SlReadUint32(), (SLRefType)conv);
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switch (sld->cmd) {
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case SL_VAR: SlSaveLoadConv(ptr, conv); break;
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case SL_REF: // Reference variable, translate
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switch (_sl.action) {
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case SLA_SAVE:
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SlWriteUint32(ReferenceToInt(*(void **)ptr, (SLRefType)conv));
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break;
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case SLA_LOAD:
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*(void **)ptr = IntToReference(CheckSavegameVersion(69) ? SlReadUint16() : SlReadUint32(), (SLRefType)conv);
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break;
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default: NOT_REACHED();
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}
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break;
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case SL_ARR: SlArray(ptr, sld->length, conv); break;
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case SL_STR: SlString(ptr, sld->length, conv); break;
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case SL_LST: SlList(ptr, (SLRefType)conv); break;
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default: NOT_REACHED();
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}
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break;
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case SL_ARR: SlArray(ptr, sld->length, conv); break;
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case SL_STR: SlString(ptr, sld->length, conv); break;
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case SL_LST: SlList(ptr, (SLRefType)conv); break;
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/* SL_WRITEBYTE translates a value of a variable to another one upon
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* saving or loading.
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* XXX - variable renaming abuse
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* game_value: the value of the variable ingame is abused by sld->version_from
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* file_value: the value of the variable in the savegame is abused by sld->version_to */
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case SL_WRITEBYTE:
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switch (_sl.action) {
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case SLA_SAVE: SlWriteByte(sld->version_to); break;
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case SLA_LOAD: *(byte *)ptr = sld->version_from; break;
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default: NOT_REACHED();
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}
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break;
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/* SL_VEH_INCLUDE loads common code for vehicles */
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case SL_VEH_INCLUDE:
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SlObject(ptr, GetVehicleDescription(VEH_END));
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break;
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default: NOT_REACHED();
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}
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break;
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/* SL_WRITEBYTE translates a value of a variable to another one upon
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* saving or loading.
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* XXX - variable renaming abuse
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* game_value: the value of the variable ingame is abused by sld->version_from
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* file_value: the value of the variable in the savegame is abused by sld->version_to */
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case SL_WRITEBYTE:
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if (_sl.save) {
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SlWriteByte(sld->version_to);
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} else {
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*(byte*)ptr = sld->version_from;
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}
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break;
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/* SL_VEH_INCLUDE loads common code for vehicles */
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case SL_VEH_INCLUDE:
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SlObject(ptr, GetVehicleDescription(VEH_END));
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break;
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default: NOT_REACHED();
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}
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return true;
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}
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@ -919,7 +950,7 @@ void SlAutolength(AutolengthProc *proc, void *arg)
|
||||
{
|
||||
size_t offs;
|
||||
|
||||
assert(_sl.save);
|
||||
assert(_sl.action == SL_SAVE);
|
||||
|
||||
/* Tell it to calculate the length */
|
||||
_sl.need_length = NL_CALCLENGTH;
|
||||
@ -1579,7 +1610,7 @@ const char *GetSaveLoadErrorString()
|
||||
SetDParamStr(1, _sl.extra_msg);
|
||||
|
||||
static char err_str[512];
|
||||
GetString(err_str, _sl.save ? STR_ERROR_GAME_SAVE_FAILED : STR_ERROR_GAME_LOAD_FAILED, lastof(err_str));
|
||||
GetString(err_str, _sl.action == SLA_SAVE ? STR_ERROR_GAME_SAVE_FAILED : STR_ERROR_GAME_LOAD_FAILED, lastof(err_str));
|
||||
return err_str;
|
||||
}
|
||||
|
||||
@ -1718,7 +1749,7 @@ SaveOrLoadResult SaveOrLoad(const char *filename, int mode, Subdirectory sb)
|
||||
|
||||
_sl.bufe = _sl.bufp = NULL;
|
||||
_sl.offs_base = 0;
|
||||
_sl.save = (mode != 0);
|
||||
_sl.action = (mode != 0) ? SLA_SAVE : SLA_LOAD;
|
||||
_sl.chs = _chunk_handlers;
|
||||
|
||||
/* General tactic is to first save the game to memory, then use an available writer
|
||||
|
||||
Loading…
Reference in New Issue
Block a user