} \
} while (0)
+/*
+ * Structure storing all the decoded data from reading a serialised
+ * game. We keep it in one of these while we check its sanity, and
+ * only once we're completely satisfied do we install it all in the
+ * midend structure proper.
+ */
+struct deserialise_data {
+ char *seed, *parstr, *desc, *privdesc;
+ char *auxinfo, *uistr, *cparstr;
+ float elapsed;
+ game_params *params, *cparams;
+ game_ui *ui;
+ struct midend_state_entry *states;
+ int nstates, statepos;
+};
+
void midend_reset_tilesize(midend *me)
{
me->preferred_tilesize = me->ourgame->preferred_tilesize;
int (*read)(void *ctx, void *buf, int len),
void *rctx)
{
- int nstates = 0, statepos = -1, gotstates = 0;
+ struct deserialise_data data;
+ int gotstates = 0;
int started = FALSE;
int i;
/* Initially all errors give the same report */
char *ret = "Data does not appear to be a saved game file";
- /*
- * We construct all the new state in local variables while we
- * check its sanity. Only once we have finished reading the
- * serialised data and detected no errors at all do we start
- * modifying stuff in the midend passed in.
- */
- char *seed = NULL, *parstr = NULL, *desc = NULL, *privdesc = NULL;
- char *auxinfo = NULL, *uistr = NULL, *cparstr = NULL;
- float elapsed = 0.0F;
- game_params *params = NULL, *cparams = NULL;
- game_ui *ui = NULL;
- struct midend_state_entry *states = NULL;
+ data.seed = data.parstr = data.desc = data.privdesc = NULL;
+ data.auxinfo = data.uistr = data.cparstr = NULL;
+ data.elapsed = 0.0F;
+ data.params = data.cparams = NULL;
+ data.ui = NULL;
+ data.states = NULL;
+ data.nstates = 0;
+ data.statepos = -1;
/*
* Loop round and round reading one key/value pair at a time
* from the serialised stream, until we have enough game states
* to finish.
*/
- while (nstates <= 0 || statepos < 0 || gotstates < nstates-1) {
+ while (data.nstates <= 0 || data.statepos < 0 ||
+ gotstates < data.nstates-1) {
char key[9], c;
int len;
goto cleanup;
}
} else if (!strcmp(key, "PARAMS")) {
- sfree(parstr);
- parstr = val;
+ sfree(data.parstr);
+ data.parstr = val;
val = NULL;
} else if (!strcmp(key, "CPARAMS")) {
- sfree(cparstr);
- cparstr = val;
+ sfree(data.cparstr);
+ data.cparstr = val;
val = NULL;
} else if (!strcmp(key, "SEED")) {
- sfree(seed);
- seed = val;
+ sfree(data.seed);
+ data.seed = val;
val = NULL;
} else if (!strcmp(key, "DESC")) {
- sfree(desc);
- desc = val;
+ sfree(data.desc);
+ data.desc = val;
val = NULL;
} else if (!strcmp(key, "PRIVDESC")) {
- sfree(privdesc);
- privdesc = val;
+ sfree(data.privdesc);
+ data.privdesc = val;
val = NULL;
} else if (!strcmp(key, "AUXINFO")) {
unsigned char *tmp;
tmp = hex2bin(val, len);
obfuscate_bitmap(tmp, len*8, TRUE);
- sfree(auxinfo);
- auxinfo = snewn(len + 1, char);
- memcpy(auxinfo, tmp, len);
- auxinfo[len] = '\0';
+ sfree(data.auxinfo);
+ data.auxinfo = snewn(len + 1, char);
+ memcpy(data.auxinfo, tmp, len);
+ data.auxinfo[len] = '\0';
sfree(tmp);
} else if (!strcmp(key, "UI")) {
- sfree(uistr);
- uistr = val;
+ sfree(data.uistr);
+ data.uistr = val;
val = NULL;
} else if (!strcmp(key, "TIME")) {
- elapsed = (float)atof(val);
+ data.elapsed = (float)atof(val);
} else if (!strcmp(key, "NSTATES")) {
- nstates = atoi(val);
- if (nstates <= 0) {
+ data.nstates = atoi(val);
+ if (data.nstates <= 0) {
ret = "Number of states in save file was negative";
goto cleanup;
}
- if (states) {
+ if (data.states) {
ret = "Two state counts provided in save file";
goto cleanup;
}
- states = snewn(nstates, struct midend_state_entry);
- for (i = 0; i < nstates; i++) {
- states[i].state = NULL;
- states[i].movestr = NULL;
- states[i].movetype = NEWGAME;
+ data.states = snewn(data.nstates, struct midend_state_entry);
+ for (i = 0; i < data.nstates; i++) {
+ data.states[i].state = NULL;
+ data.states[i].movestr = NULL;
+ data.states[i].movetype = NEWGAME;
}
} else if (!strcmp(key, "STATEPOS")) {
- statepos = atoi(val);
+ data.statepos = atoi(val);
} else if (!strcmp(key, "MOVE")) {
gotstates++;
- states[gotstates].movetype = MOVE;
- states[gotstates].movestr = val;
+ data.states[gotstates].movetype = MOVE;
+ data.states[gotstates].movestr = val;
val = NULL;
} else if (!strcmp(key, "SOLVE")) {
gotstates++;
- states[gotstates].movetype = SOLVE;
- states[gotstates].movestr = val;
+ data.states[gotstates].movetype = SOLVE;
+ data.states[gotstates].movestr = val;
val = NULL;
} else if (!strcmp(key, "RESTART")) {
gotstates++;
- states[gotstates].movetype = RESTART;
- states[gotstates].movestr = val;
+ data.states[gotstates].movetype = RESTART;
+ data.states[gotstates].movestr = val;
val = NULL;
}
}
val = NULL;
}
- params = me->ourgame->default_params();
- me->ourgame->decode_params(params, parstr);
- if (me->ourgame->validate_params(params, TRUE)) {
+ data.params = me->ourgame->default_params();
+ me->ourgame->decode_params(data.params, data.parstr);
+ if (me->ourgame->validate_params(data.params, TRUE)) {
ret = "Long-term parameters in save file are invalid";
goto cleanup;
}
- cparams = me->ourgame->default_params();
- me->ourgame->decode_params(cparams, cparstr);
- if (me->ourgame->validate_params(cparams, FALSE)) {
+ data.cparams = me->ourgame->default_params();
+ me->ourgame->decode_params(data.cparams, data.cparstr);
+ if (me->ourgame->validate_params(data.cparams, FALSE)) {
ret = "Short-term parameters in save file are invalid";
goto cleanup;
}
- if (seed && me->ourgame->validate_params(cparams, TRUE)) {
+ if (data.seed && me->ourgame->validate_params(data.cparams, TRUE)) {
/*
* The seed's no use with this version, but we can perfectly
* well use the rest of the data.
*/
- sfree(seed);
- seed = NULL;
+ sfree(data.seed);
+ data.seed = NULL;
}
- if (!desc) {
+ if (!data.desc) {
ret = "Game description in save file is missing";
goto cleanup;
- } else if (me->ourgame->validate_desc(cparams, desc)) {
+ } else if (me->ourgame->validate_desc(data.cparams, data.desc)) {
ret = "Game description in save file is invalid";
goto cleanup;
}
- if (privdesc && me->ourgame->validate_desc(cparams, privdesc)) {
+ if (data.privdesc &&
+ me->ourgame->validate_desc(data.cparams, data.privdesc)) {
ret = "Game private description in save file is invalid";
goto cleanup;
}
- if (statepos < 0 || statepos >= nstates) {
+ if (data.statepos < 0 || data.statepos >= data.nstates) {
ret = "Game position in save file is out of range";
}
- states[0].state = me->ourgame->new_game(me, cparams,
- privdesc ? privdesc : desc);
- for (i = 1; i < nstates; i++) {
- assert(states[i].movetype != NEWGAME);
- switch (states[i].movetype) {
+ data.states[0].state = me->ourgame->new_game(
+ me, data.cparams, data.privdesc ? data.privdesc : data.desc);
+ for (i = 1; i < data.nstates; i++) {
+ assert(data.states[i].movetype != NEWGAME);
+ switch (data.states[i].movetype) {
case MOVE:
case SOLVE:
- states[i].state = me->ourgame->execute_move(states[i-1].state,
- states[i].movestr);
- if (states[i].state == NULL) {
+ data.states[i].state = me->ourgame->execute_move(
+ data.states[i-1].state, data.states[i].movestr);
+ if (data.states[i].state == NULL) {
ret = "Save file contained an invalid move";
goto cleanup;
}
break;
case RESTART:
- if (me->ourgame->validate_desc(cparams, states[i].movestr)) {
+ if (me->ourgame->validate_desc(
+ data.cparams, data.states[i].movestr)) {
ret = "Save file contained an invalid restart move";
goto cleanup;
}
- states[i].state = me->ourgame->new_game(me, cparams,
- states[i].movestr);
+ data.states[i].state = me->ourgame->new_game(
+ me, data.cparams, data.states[i].movestr);
break;
}
}
- ui = me->ourgame->new_ui(states[0].state);
- me->ourgame->decode_ui(ui, uistr);
+ data.ui = me->ourgame->new_ui(data.states[0].state);
+ me->ourgame->decode_ui(data.ui, data.uistr);
/*
* Now we've run out of possible error conditions, so we're
char *tmp;
tmp = me->desc;
- me->desc = desc;
- desc = tmp;
+ me->desc = data.desc;
+ data.desc = tmp;
tmp = me->privdesc;
- me->privdesc = privdesc;
- privdesc = tmp;
+ me->privdesc = data.privdesc;
+ data.privdesc = tmp;
tmp = me->seedstr;
- me->seedstr = seed;
- seed = tmp;
+ me->seedstr = data.seed;
+ data.seed = tmp;
tmp = me->aux_info;
- me->aux_info = auxinfo;
- auxinfo = tmp;
+ me->aux_info = data.auxinfo;
+ data.auxinfo = tmp;
}
me->genmode = GOT_NOTHING;
- me->statesize = nstates;
- nstates = me->nstates;
+ me->statesize = data.nstates;
+ data.nstates = me->nstates;
me->nstates = me->statesize;
{
struct midend_state_entry *tmp;
tmp = me->states;
- me->states = states;
- states = tmp;
+ me->states = data.states;
+ data.states = tmp;
}
- me->statepos = statepos;
+ me->statepos = data.statepos;
{
game_params *tmp;
tmp = me->params;
- me->params = params;
- params = tmp;
+ me->params = data.params;
+ data.params = tmp;
tmp = me->curparams;
- me->curparams = cparams;
- cparams = tmp;
+ me->curparams = data.cparams;
+ data.cparams = tmp;
}
me->oldstate = NULL;
game_ui *tmp;
tmp = me->ui;
- me->ui = ui;
- ui = tmp;
+ me->ui = data.ui;
+ data.ui = tmp;
}
- me->elapsed = elapsed;
+ me->elapsed = data.elapsed;
me->pressed_mouse_button = 0;
midend_set_timer(me);
cleanup:
sfree(val);
- sfree(seed);
- sfree(parstr);
- sfree(cparstr);
- sfree(desc);
- sfree(privdesc);
- sfree(auxinfo);
- sfree(uistr);
- if (params)
- me->ourgame->free_params(params);
- if (cparams)
- me->ourgame->free_params(cparams);
- if (ui)
- me->ourgame->free_ui(ui);
- if (states) {
+ sfree(data.seed);
+ sfree(data.parstr);
+ sfree(data.cparstr);
+ sfree(data.desc);
+ sfree(data.privdesc);
+ sfree(data.auxinfo);
+ sfree(data.uistr);
+ if (data.params)
+ me->ourgame->free_params(data.params);
+ if (data.cparams)
+ me->ourgame->free_params(data.cparams);
+ if (data.ui)
+ me->ourgame->free_ui(data.ui);
+ if (data.states) {
int i;
- for (i = 0; i < nstates; i++) {
- if (states[i].state)
- me->ourgame->free_game(states[i].state);
- sfree(states[i].movestr);
+ for (i = 0; i < data.nstates; i++) {
+ if (data.states[i].state)
+ me->ourgame->free_game(data.states[i].state);
+ sfree(data.states[i].movestr);
}
- sfree(states);
+ sfree(data.states);
}
return ret;
~ian / sgt-puzzles.git / blobdiff