6 * Permission is hereby granted, free of charge, to any person obtaining a copy of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is furnished to do
11 * so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
28 /* TODO: remove globals ... */
38 struct memblock_t *next;
39 struct memblock_t *prev;
42 static struct memblock_t *mem_start = NULL;
44 void *util_memory_a(size_t byte, unsigned int line, const char *file) {
45 struct memblock_t *info = malloc(sizeof(struct memblock_t) + byte);
46 void *data = (void*)(info+1);
47 if (!info) return NULL;
52 info->next = mem_start;
54 mem_start->prev = info;
57 util_debug("MEM", "allocation: % 8u (bytes) address 0x%08X @ %s:%u\n", byte, data, file, line);
64 void util_memory_d(void *ptrn, unsigned int line, const char *file) {
65 struct memblock_t *info = NULL;
68 info = ((struct memblock_t*)ptrn - 1);
70 util_debug("MEM", "released: % 8u (bytes) address 0x%08X @ %s:%u\n", info->byte, ptrn, file, line);
75 info->prev->next = info->next;
77 info->next->prev = info->prev;
78 if (info == mem_start)
79 mem_start = info->next;
84 void *util_memory_r(void *ptrn, size_t byte, unsigned int line, const char *file) {
85 struct memblock_t *oldinfo = NULL;
87 struct memblock_t *newinfo;
90 return util_memory_a(byte, line, file);
92 util_memory_d(ptrn, line, file);
96 oldinfo = ((struct memblock_t*)ptrn - 1);
97 newinfo = ((struct memblock_t*)malloc(sizeof(struct memblock_t) + byte));
99 util_debug("MEM", "reallocation: % 8u -> %u (bytes) address 0x%08X -> 0x%08X @ %s:%u\n", oldinfo->byte, byte, ptrn, (void*)(newinfo+1), file, line);
103 util_memory_d(oldinfo+1, line, file);
108 memcpy(newinfo+1, oldinfo+1, oldinfo->byte);
112 oldinfo->prev->next = oldinfo->next;
114 oldinfo->next->prev = oldinfo->prev;
115 if (oldinfo == mem_start)
116 mem_start = oldinfo->next;
119 newinfo->line = line;
120 newinfo->byte = byte;
121 newinfo->file = file;
122 newinfo->prev = NULL;
123 newinfo->next = mem_start;
125 mem_start->prev = newinfo;
128 mem_ab -= oldinfo->byte;
129 mem_ab += newinfo->byte;
136 void util_meminfo() {
137 struct memblock_t *info;
142 for (info = mem_start; info; info = info->next) {
143 util_debug("MEM", "lost: % 8u (bytes) at %s:%u\n",
149 util_debug("MEM", "Memory information:\n\
150 Total allocations: %llu\n\
151 Total deallocations: %llu\n\
152 Total allocated: %llu (bytes)\n\
153 Total deallocated: %llu (bytes)\n\
154 Leaks found: lost %llu (bytes) in %d allocations\n",
163 * Some string utility functions, because strdup uses malloc, and we want
164 * to track all memory (without replacing malloc).
166 char *util_strdup(const char *s) {
173 if ((len = strlen(s)) && (ptr = mem_a(len+1))) {
180 void util_debug(const char *area, const char *ms, ...) {
185 if (!strcmp(area, "MEM") && !opts.memchk)
189 con_out ("[%s] ", area);
195 * only required if big endian .. otherwise no need to swap
198 #if PLATFORM_BYTE_ORDER == GMQCC_BYTE_ORDER_BIG
199 static void util_swap16(uint16_t *d, size_t l) {
201 d[l] = (d[l] << 8) | (d[l] >> 8);
205 static void util_swap32(uint32_t *d, size_t l) {
208 v = ((d[l] << 8) & 0xFF00FF00) | ((d[l] >> 8) & 0x00FF00FF);
209 d[l] = (v << 16) | (v >> 16);
213 /* Some strange system doesn't like constants that big, AND doesn't recognize an ULL suffix
214 * so let's go the safe way
216 static void util_swap64(uint32_t *d, size_t l) {
220 v = ((d[l] << 8) & 0xFF00FF00FF00FF00) | ((d[l] >> 8) & 0x00FF00FF00FF00FF);
221 v = ((v << 16) & 0xFFFF0000FFFF0000) | ((v >> 16) & 0x0000FFFF0000FFFF);
222 d[l] = (v << 32) | (v >> 32);
226 for (i = 0; i < l; i += 2) {
235 void util_endianswap(void *_data, size_t length, unsigned int typesize) {
236 # if PLATFORM_BYTE_ORDER == -1 /* runtime check */
237 if (*((char*)&typesize))
240 /* prevent unused warnings */
245 # if PLATFORM_BYTE_ORDER == GMQCC_BYTE_ORDER_LITTLE
251 util_swap16((uint16_t*)_data, length>>1);
254 util_swap32((uint32_t*)_data, length>>2);
257 util_swap64((uint32_t*)_data, length>>3);
260 default: abort(); /* please blow the fuck up! */
267 * CRC algorithms vary in the width of the polynomial, the value of said polynomial,
268 * the initial value used for the register, weather the bits of each byte are reflected
269 * before being processed, weather the algorithm itself feeds input bytes through the
270 * register or XORs them with a byte from one end and then straight into the table, as
271 * well as (but not limited to the idea of reflected versions) where the final register
272 * value becomes reversed, and finally weather the value itself is used to XOR the final
273 * register value. AS such you can already imagine how painfully annoying CRCs are,
274 * of course we stand to target Quake, which expects it's certian set of rules for proper
275 * calculation of a CRC.
277 * In most traditional CRC algorithms on uses a reflected table driven method where a value
278 * or register is reflected if it's bits are swapped around it's center. For example:
279 * take the bits 0101 is the 4-bit reflection of 1010, and respectfully 0011 would be the
280 * reflection of 1100. Quake however expects a NON-Reflected CRC on the output, but still
281 * requires a final XOR on the values (0xFFFF and 0x0000) this is a standard CCITT CRC-16
282 * which I respectfully as a programmer don't agree with.
284 * So now you know what we target, and why we target it, despite how unsettling it may seem
285 * but those are what Quake seems to request.
288 static const uint16_t util_crc16_table[] = {
289 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5,
290 0x60C6, 0x70E7, 0x8108, 0x9129, 0xA14A, 0xB16B,
291 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF, 0x1231, 0x0210,
292 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
293 0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C,
294 0xF3FF, 0xE3DE, 0x2462, 0x3443, 0x0420, 0x1401,
295 0x64E6, 0x74C7, 0x44A4, 0x5485, 0xA56A, 0xB54B,
296 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
297 0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6,
298 0x5695, 0x46B4, 0xB75B, 0xA77A, 0x9719, 0x8738,
299 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC, 0x48C4, 0x58E5,
300 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
301 0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969,
302 0xA90A, 0xB92B, 0x5AF5, 0x4AD4, 0x7AB7, 0x6A96,
303 0x1A71, 0x0A50, 0x3A33, 0x2A12, 0xDBFD, 0xCBDC,
304 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
305 0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03,
306 0x0C60, 0x1C41, 0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD,
307 0xAD2A, 0xBD0B, 0x8D68, 0x9D49, 0x7E97, 0x6EB6,
308 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
309 0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A,
310 0x9F59, 0x8F78, 0x9188, 0x81A9, 0xB1CA, 0xA1EB,
311 0xD10C, 0xC12D, 0xF14E, 0xE16F, 0x1080, 0x00A1,
312 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
313 0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C,
314 0xE37F, 0xF35E, 0x02B1, 0x1290, 0x22F3, 0x32D2,
315 0x4235, 0x5214, 0x6277, 0x7256, 0xB5EA, 0xA5CB,
316 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
317 0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447,
318 0x5424, 0x4405, 0xA7DB, 0xB7FA, 0x8799, 0x97B8,
319 0xE75F, 0xF77E, 0xC71D, 0xD73C, 0x26D3, 0x36F2,
320 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
321 0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9,
322 0xB98A, 0xA9AB, 0x5844, 0x4865, 0x7806, 0x6827,
323 0x18C0, 0x08E1, 0x3882, 0x28A3, 0xCB7D, 0xDB5C,
324 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
325 0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0,
326 0x2AB3, 0x3A92, 0xFD2E, 0xED0F, 0xDD6C, 0xCD4D,
327 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9, 0x7C26, 0x6C07,
328 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
329 0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA,
330 0x8FD9, 0x9FF8, 0x6E17, 0x7E36, 0x4E55, 0x5E74,
331 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
334 /* Non - Reflected */
335 uint16_t util_crc16(uint16_t current, const char *k, size_t len) {
336 register uint16_t h = current;
337 for (; len; --len, ++k)
338 h = util_crc16_table[(h>>8)^((unsigned char)*k)]^(h<<8);
341 /* Reflective Varation (for reference) */
343 uint16_t util_crc16(const char *k, int len, const short clamp) {
344 register uint16_t h= (uint16_t)0xFFFFFFFF;
345 for (; len; --len, ++k)
346 h = util_crc16_table[(h^((unsigned char)*k))&0xFF]^(h>>8);
351 size_t util_strtocmd(const char *in, char *out, size_t outsz) {
353 for (; *in && sz < outsz; ++in, ++out, ++sz)
354 *out = (*in == '-') ? '_' : (isalpha(*in) && !isupper(*in)) ? *in + 'A' - 'a': *in;
359 size_t util_strtononcmd(const char *in, char *out, size_t outsz) {
361 for (; *in && sz < outsz; ++in, ++out, ++sz)
362 *out = (*in == '_') ? '-' : (isalpha(*in) && isupper(*in)) ? *in + 'a' - 'A' : *in;
367 /* TODO: rewrite ... when I redo the ve cleanup */
368 void _util_vec_grow(void **a, size_t i, size_t s) {
369 size_t m = *a ? 2*_vec_beg(*a)+i : i+1;
370 void *p = mem_r((*a ? _vec_raw(*a) : NULL), s * m + sizeof(size_t)*2);
373 *a = (void*)((size_t*)p + 2);
378 * Hash table for generic data, based on dynamic memory allocations
379 * all around. This is the internal interface, please look for
380 * EXPOSED INTERFACE comment below
382 typedef struct hash_node_t {
383 char *key; /* the key for this node in table */
384 void *value; /* pointer to the data as void* */
385 struct hash_node_t *next; /* next node (linked list) */
388 GMQCC_INLINE size_t util_hthash(hash_table_t *ht, const char *key) {
389 const uint32_t mix = 0x5BD1E995;
390 const uint32_t rot = 24;
391 size_t size = strlen(key);
392 uint32_t hash = 0x1EF0 /* LICRC TAB */ ^ size;
394 const unsigned char *data = (const unsigned char*)key;
397 alias = *(uint32_t*)data;
400 alias ^= alias >> rot;
411 case 3: hash ^= data[2] << 16;
412 case 2: hash ^= data[1] << 8;
413 case 1: hash ^= data[0];
421 return (size_t) (hash % ht->size);
424 hash_node_t *_util_htnewpair(const char *key, void *value) {
426 if (!(node = mem_a(sizeof(hash_node_t))))
429 if (!(node->key = util_strdup(key))) {
441 * EXPOSED INTERFACE for the hashtable implementation
442 * util_htnew(size) -- to make a new hashtable
443 * util_htset(table, key, value, sizeof(value)) -- to set something in the table
444 * util_htget(table, key) -- to get something from the table
445 * util_htdel(table) -- to delete the table
447 hash_table_t *util_htnew(size_t size) {
448 hash_table_t *hashtable = NULL;
452 if (!(hashtable = mem_a(sizeof(hash_table_t))))
455 if (!(hashtable->table = mem_a(sizeof(hash_node_t*) * size))) {
460 hashtable->size = size;
461 memset(hashtable->table, 0, sizeof(hash_node_t*) * size);
466 void util_htseth(hash_table_t *ht, const char *key, size_t bin, void *value) {
467 hash_node_t *newnode = NULL;
468 hash_node_t *next = NULL;
469 hash_node_t *last = NULL;
471 next = ht->table[bin];
473 while (next && next->key && strcmp(key, next->key) > 0)
474 last = next, next = next->next;
476 /* already in table, do a replace */
477 if (next && next->key && strcmp(key, next->key) == 0) {
480 /* not found, grow a pair man :P */
481 newnode = _util_htnewpair(key, value);
482 if (next == ht->table[bin]) {
483 newnode->next = next;
484 ht->table[bin] = newnode;
486 last->next = newnode;
488 newnode->next = next;
489 last->next = newnode;
494 void util_htset(hash_table_t *ht, const char *key, void *value) {
495 util_htseth(ht, key, util_hthash(ht, key), value);
498 void *util_htgeth(hash_table_t *ht, const char *key, size_t bin) {
499 hash_node_t *pair = ht->table[bin];
501 while (pair && pair->key && strcmp(key, pair->key) > 0)
504 if (!pair || !pair->key || strcmp(key, pair->key) != 0)
510 void *util_htget(hash_table_t *ht, const char *key) {
511 return util_htgeth(ht, key, util_hthash(ht, key));
515 * Free all allocated data in a hashtable, this is quite the amount
518 void util_htdel(hash_table_t *ht) {
520 for (; i < ht->size; i++) {
521 hash_node_t *n = ht->table[i];