/*
* Copyright (C) 2012
* Dale Weiler
+ * Wolfgang Bumiller
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
if(*((char *)&s))
return;
- for(; w < l; w++) {
- for(; i < s << 1; i++) {
+ for(; w < (size_t)l; w++) {
+ for(; i < (size_t)(s << 1); i++) {
unsigned char *p = (unsigned char *)m+w*s;
unsigned char t = p[i];
p[i] = p[s-i-1];
int c = getc(stream);
if (chr < 2) {
- char *tmp = (char*)mem_a((*n+=(*n>16)?*n:64));
- if (!tmp)
- return -1;
-
- memcpy(tmp, *lineptr, pos - *lineptr);
+ *n += (*n > 16) ? *n : 64;
chr = *n + *lineptr - pos;
- if (!(*lineptr = tmp)) {
- mem_d (tmp);
+ if (!(*lineptr = (char*)mem_r(*lineptr,*n)))
return -1;
- }
pos = *n - chr + *lineptr;
}
size_t util_strtocmd(const char *in, char *out, size_t outsz) {
size_t sz = 1;
- for (; *in && sz < outsz; ++in, ++out, ++sz) {
- if (*in == '-')
- *out = '_';
- else if (isalpha(*in) && !isupper(*in))
- *out = *in + 'A' - 'a';
- else
- *out = *in;
- }
+ for (; *in && sz < outsz; ++in, ++out, ++sz)
+ *out = (*in == '-') ? '_' : (isalpha(*in) && !isupper(*in)) ? *in + 'A' - 'a': *in;
*out = 0;
return sz-1;
}
size_t util_strtononcmd(const char *in, char *out, size_t outsz) {
size_t sz = 1;
- for (; *in && sz < outsz; ++in, ++out, ++sz) {
- if (*in == '_')
- *out = '-';
- else if (isalpha(*in) && isupper(*in))
- *out = *in + 'a' - 'A';
- else
- *out = *in;
- }
+ for (; *in && sz < outsz; ++in, ++out, ++sz)
+ *out = (*in == '_') ? '-' : (isalpha(*in) && isupper(*in)) ? *in + 'a' - 'A' : *in;
*out = 0;
return sz-1;
}
+
FILE *util_fopen(const char *filename, const char *mode)
{
#ifdef WIN32
#endif
}
-bool util_filexists(const char *file) {
- FILE *fp = fopen(file, "rb");
- if (!fp) return false;
-
- /* it exists */
- fclose(fp);
- return true;
-}
-
void _util_vec_grow(void **a, size_t i, size_t s) {
size_t m = *a ? 2*_vec_beg(*a)+i : i+1;
void *p = mem_r((*a ? _vec_raw(*a) : NULL), s * m + sizeof(size_t)*2);
*a = (void*)((size_t*)p + 2);
_vec_beg(*a) = m;
}
+
+/*
+ * Hash table for generic data, based on dynamic memory allocations
+ * all around. This is the internal interface, please look for
+ * EXPOSED INTERFACE comment below
+ */
+typedef struct hash_node_t {
+ char *key; /* the key for this node in table */
+ void *value; /* pointer to the data as void* */
+ struct hash_node_t *next; /* next node (linked list) */
+} hash_node_t;
+
+
+size_t util_hthash(hash_table_t *ht, const char *key) {
+ uint64_t val = 0;
+ size_t len = strlen(key);
+ size_t itr = 0;
+
+
+ while (val < ((uint64_t)~1) /* MAX SIZE OF UINT64 */ && itr < len) {
+ val = val << 8;
+ val += key[itr];
+
+ itr++;
+ }
+
+ return val % ht->size;
+}
+
+hash_node_t *_util_htnewpair(const char *key, void *value) {
+ hash_node_t *node;
+ if (!(node = mem_a(sizeof(hash_node_t))))
+ return NULL;
+
+ if (!(node->key = util_strdup(key))) {
+ mem_d(node);
+ return NULL;
+ }
+
+ node->value = value;
+ node->next = NULL;
+
+ return node;
+}
+
+/*
+ * EXPOSED INTERFACE for the hashtable implementation
+ * util_htnew(size) -- to make a new hashtable
+ * util_htset(table, key, value, sizeof(value)) -- to set something in the table
+ * util_htget(table, key) -- to get something from the table
+ * util_htdel(table) -- to delete the table
+ */
+hash_table_t *util_htnew(size_t size) {
+ hash_table_t *hashtable = NULL;
+ if (size < 1)
+ return NULL;
+
+ if (!(hashtable = mem_a(sizeof(hash_table_t))))
+ return NULL;
+
+ if (!(hashtable->table = mem_a(sizeof(hash_node_t*) * size))) {
+ mem_d(hashtable);
+ return NULL;
+ }
+
+ hashtable->size = size;
+ memset(hashtable->table, 0, sizeof(hash_node_t*) * size);
+
+ return hashtable;
+}
+
+void util_htseth(hash_table_t *ht, const char *key, size_t bin, void *value) {
+ hash_node_t *newnode = NULL;
+ hash_node_t *next = NULL;
+ hash_node_t *last = NULL;
+
+ next = ht->table[bin];
+
+ while (next && next->key && strcmp(key, next->key) > 0)
+ last = next, next = next->next;
+
+ /* already in table, do a replace */
+ if (next && next->key && strcmp(key, next->key) == 0) {
+ next->value = value;
+ } else {
+ /* not found, grow a pair man :P */
+ newnode = _util_htnewpair(key, value);
+ if (next == ht->table[bin]) {
+ newnode->next = next;
+ ht->table[bin] = newnode;
+ } else if (!next) {
+ last->next = newnode;
+ } else {
+ newnode->next = next;
+ last->next = newnode;
+ }
+ }
+}
+
+void util_htset(hash_table_t *ht, const char *key, void *value) {
+ util_htseth(ht, key, util_hthash(ht, key), value);
+}
+
+void *util_htgeth(hash_table_t *ht, const char *key, size_t bin) {
+ hash_node_t *pair = ht->table[bin];
+
+ while (pair && pair->key && strcmp(key, pair->key) > 0)
+ pair = pair->next;
+
+ if (!pair || !pair->key || strcmp(key, pair->key) != 0)
+ return NULL;
+
+ return pair->value;
+}
+
+void *util_htget(hash_table_t *ht, const char *key) {
+ return util_htgeth(ht, key, util_hthash(ht, key));
+}
+
+/*
+ * Free all allocated data in a hashtable, this is quite the amount
+ * of work.
+ */
+void util_htdel(hash_table_t *ht) {
+ size_t i = 0;
+ for (; i < ht->size; i++) {
+ hash_node_t *n = ht->table[i];
+
+ /* free in list */
+ while (n) {
+ if (n->key)
+ mem_d(n->key);
+ n = n->next;
+ }
+
+ }
+ /* free table */
+ mem_d(ht->table);
+ mem_d(ht);
+}
projects / xonotic / gmqcc.git / blobdiff