1 /* src/server/configfile.c */
3 #include <stddef.h> /* size_t, NULL */
4 #include <stdio.h> /* snprintf() */
5 #include <stdint.h> /* uint8_t */
6 #include <stdlib.h> /* atoi(), free() */
7 #include <string.h> /* strcmp() */
8 #include "../common/parse_file.h" /* EDIT_STARTED, parsetest_int(),parse_file(),
9 * parsetest_too_many_values(),parse_id_uniq()
10 * parse_unknown_arg(), parse_init_entry(),
11 * parse_and_reduce_to_readyflag(),parse_val()
13 #include "../common/rexit.h" /* exit_err(), exit_trouble() */
14 #include "../common/try_malloc.h" /* try_malloc() */
15 #include "cleanup.h" /* set_cleanup_flag(), CLEANUP_THING_TYPES,
16 * CLEANUP_THING_ACTIONS
18 #include "thing_actions.h" /* ThingAction */
19 #include "things.h" /* Thing, ThingType */
20 #include "world.h" /* world global */
24 /* Flags defining state of thing type and action entry reading ((un-)finished /
25 * ready for starting the reading of a new definition etc.)
35 LIFEPOINTS_SET = 0x10,
36 CONSUMABLE_SET = 0x20,
38 READY_ACTION = NAME_SET | EFFORT_SET,
39 READY_THING = NAME_SET | CORPSE_ID_SET | SYMBOL_SET | LIFEPOINTS_SET
40 | CONSUMABLE_SET | START_N_SET
45 /* What ThingType and ThingAction structs have in common at their top. Use this
46 * to allow same functions run over structs of both types.
51 struct EntryHead * next;
56 /* Interpret "token0" and "token1" as data to write into the ThingAction /
59 * Individual ThingType / ThingAction DB entries are put together line by line
60 * before being written. Writing only happens after all necessary members of an
61 * entry have been assembled, and when additionally a) a new entry is started by
62 * a "token0" of "ACTION" or "THINGTYPE"; or b) "token0" is NULL.
64 * Also check against the line parse_file() read tokens from having more tokens.
66 static void tokens_into_entries(char * token0, char * token1);
68 /* Start reading a new DB entry of "size" from tokens if "token0" matches
69 * "comparand". Set EDIT_STARTED in "flags" to mark beginning of new entry
70 * reading. Check that "token1" id of new entry has not already been used in DB
71 * starting at "entry_cmp".
73 static uint8_t start_entry(char * token0, char * token1, char * comparand,
74 uint8_t * flags, size_t size,
75 struct EntryHead ** entry,
76 struct EntryHead * entry_cmp);
78 /* Write DB entry pointed to by "entry" to its appropriate location. */
79 static void write_if_entry(struct EntryHead ** entry,
80 struct EntryHead *** entry_p_p_p);
82 /* Ensure that all .corpse_id members in the ThingType DB fit .id members of
83 * ThingType DB entries.
85 static void test_corpse_ids();
87 /* If "token0" matches "comparand", set world.player_type to int in "token1". */
88 static uint8_t set_player_type(char * token0, char * comparand, char * token1);
90 /* If "token0" matches "comparand", set world.map.length to int in "token1". */
91 static uint8_t set_map_length(char * token0, char * comparand, char * token1);
93 /* Try to read tokens as members for the definition currently edited, which may
94 * be "tt" or "ta". What member of which of the two is set depends on which of
95 * the flags has EDIT_STARTED set and on the key name in "token0". Return 1 if
96 * interpretation succeeds, else 0.
98 * Note that ThingAction entries' .name also determines their .func.
100 static uint8_t set_members(char * token0, char * token1,
101 uint8_t * thing_flags, uint8_t * action_flags,
102 struct ThingType * tt, struct ThingAction * ta);
104 /* If "name" fits "ta"->name, set "ta"->func to "func". (Derives ThingAction
105 * .func from .name for set_members().
107 static uint8_t try_func_name(struct ThingAction * ta,
108 char * name, void (* func) (struct Thing *));
112 static void tokens_into_entries(char * token0, char * token1)
114 char * str_action = "ACTION";
115 char * str_thing = "THINGTYPE";
116 char * str_player = "PLAYER_TYPE";
117 char * str_map_length = "MAP_LENGTH";
118 static struct ThingAction ** ta_p_p = &world.thing_actions;
119 static struct ThingType ** tt_p_p = &world.thing_types;
120 static uint8_t action_flags = READY_ACTION;
121 static uint8_t thing_flags = READY_THING;
122 static struct EntryHead * ta = NULL;
123 static struct EntryHead * tt = NULL;
124 if (!token0 || !strcmp(token0, str_action) || !strcmp(token0, str_thing)
125 || !strcmp(token0, str_player))
127 parse_and_reduce_to_readyflag(&action_flags, READY_ACTION);
128 parse_and_reduce_to_readyflag(&thing_flags, READY_THING);
129 write_if_entry(&ta, (struct EntryHead ***) &ta_p_p);
130 write_if_entry(&tt, (struct EntryHead ***) &tt_p_p);
134 parsetest_too_many_values();
135 if (start_entry(token0, token1, str_action, &action_flags,
136 sizeof(struct ThingAction), (struct EntryHead**) &ta,
137 (struct EntryHead *) world.thing_actions))
139 err_line(0 == atoi(token1), "Value must not be 0.");
141 else if (!( start_entry(token0, token1, str_thing, &thing_flags,
142 sizeof(struct ThingType),
143 (struct EntryHead**) &tt,
144 (struct EntryHead *) world.thing_types)
145 || set_player_type(token0, str_player, token1)
146 || set_map_length(token0, str_map_length, token1)
147 || set_members(token0, token1, &thing_flags, &action_flags,
148 (struct ThingType *) tt,
149 (struct ThingAction *) ta)))
158 static uint8_t start_entry(char * token0, char * token1, char * comparand,
159 uint8_t * flags, size_t size,
160 struct EntryHead ** entry,
161 struct EntryHead * entry_cmp)
163 if (strcmp(token0, comparand))
167 *entry = (struct EntryHead *) parse_init_entry(flags, size);
168 parsetest_int(token1, '8');
169 (*entry)-> id = atoi(token1);
170 for (; NULL != entry_cmp; entry_cmp = entry_cmp->next)
172 parse_id_uniq((*entry)->id == entry_cmp->id);
179 static void write_if_entry(struct EntryHead ** entry,
180 struct EntryHead *** entry_p_p_p)
184 (*entry)->next = NULL;
185 **entry_p_p_p = *entry;
186 *entry_p_p_p = &((*entry)->next);
187 *entry = NULL; /* So later runs of this don't re-append same entry. */
193 static void test_corpse_ids()
195 char * f_name = "test_corpse_ids()";
196 char * prefix = "In the thing types DB, one thing corpse ID does not "
197 "reference any known thing type in the DB. ID of "
198 "responsible thing type: ";
199 size_t size = strlen(prefix) + 3 + 1; /* 3: uint8_t representation strlen */
200 char * err_corpse = try_malloc(size, f_name);
201 struct ThingType * test_entry_0 = world.thing_types;
202 for (; test_entry_0; test_entry_0 = test_entry_0->next)
204 uint8_t corpse_id_found = 0;
205 struct ThingType * test_entry_1 = world.thing_types;
206 for (; test_entry_1; test_entry_1 = test_entry_1->next)
208 if (test_entry_0->corpse_id == test_entry_1->id)
213 int test = snprintf(err_corpse, size, "%s%d", prefix, test_entry_0->id);
214 exit_trouble(test < 0, f_name, "snprintf()");
215 exit_err(!corpse_id_found, err_corpse);
222 static uint8_t set_player_type(char * token0, char * comparand, char * token1)
224 if (strcmp(token0, comparand))
228 parsetest_int(token1, '8');
229 world.player_type = atoi(token1);
235 static uint8_t set_map_length(char * token0, char * comparand, char * token1)
237 if (strcmp(token0, comparand))
241 parsetest_int(token1, 'i');
242 int test = atoi(token1) > 256 || atoi(token1) < 1;
243 err_line(test, "Value must be >= 1 and <= 256.");
244 world.map.length = atoi(token1);
250 static uint8_t set_members(char * token0, char * token1, uint8_t * thing_flags,
251 uint8_t * action_flags,
252 struct ThingType * tt, struct ThingAction * ta)
254 if ( *action_flags & EDIT_STARTED
255 && parse_val(token0, token1, "NAME", action_flags,
256 NAME_SET, 's', (char *) &ta->name))
258 if (!( try_func_name(ta, "move", actor_move)
259 || try_func_name(ta, "pick_up", actor_pick)
260 || try_func_name(ta, "drop", actor_drop)
261 || try_func_name(ta, "use", actor_use)))
263 ta->func = actor_wait;
265 *action_flags = *action_flags | NAME_SET;
268 else if ( parse_val(token0, token1, "NAME", thing_flags,
269 NAME_SET, 's', (char *) &tt->name)
270 || parse_val(token0, token1, "SYMBOL", thing_flags,
271 SYMBOL_SET, 'c', (char *) &tt->char_on_map)
272 || parse_val(token0, token1, "EFFORT", action_flags,
273 EFFORT_SET, '8', (char *) &ta->effort)
274 || parse_val(token0, token1, "START_NUMBER", thing_flags,
275 START_N_SET, '8', (char *) &tt->start_n)
276 || parse_val(token0, token1, "LIFEPOINTS", thing_flags,
277 LIFEPOINTS_SET, '8', (char *) &tt->lifepoints)
278 || parse_val(token0, token1, "CONSUMABLE", thing_flags,
279 CONSUMABLE_SET, '8', (char *) &tt->consumable)
280 || parse_val(token0, token1, "CORPSE_ID", thing_flags,
281 CORPSE_ID_SET, '8', (char *) &tt->corpse_id))
290 static uint8_t try_func_name(struct ThingAction * ta, char * name,
291 void (* func) (struct Thing *))
293 if (0 == strcmp(ta->name, name))
303 extern void read_config_file()
305 parse_file(world.path_config, tokens_into_entries);
306 exit_err(!world.map.length, "Map size not defined in config file.");
307 uint8_t player_type_is_valid = 0;
308 struct ThingType * tt;
309 for (tt = world.thing_types; NULL != tt; tt = tt->next)
311 if (world.player_type == tt->id)
313 player_type_is_valid = 1;
317 exit_err(!player_type_is_valid, "No valid thing type set for player.");
318 set_cleanup_flag(CLEANUP_THING_ACTIONS | CLEANUP_THING_TYPES);