2 * Licensed under a two-clause BSD-style license.
3 * See LICENSE for details.
6 #include "git-compat-util.h"
9 #include "string_pool.h"
11 static struct trp_root tree = { ~0 };
15 struct trp_node children;
18 /* Two memory pools: one for struct node, and another for strings */
19 obj_pool_gen(node, struct node, 4096)
20 obj_pool_gen(string, char, 4096)
22 static char *node_value(struct node *node)
24 return node ? string_pointer(node->offset) : NULL;
27 static int node_cmp(struct node *a, struct node *b)
29 return strcmp(node_value(a), node_value(b));
32 /* Build a Treap from the node structure (a trp_node w/ offset) */
33 trp_gen(static, tree_, struct node, children, node, node_cmp)
35 const char *pool_fetch(uint32_t entry)
37 return node_value(node_pointer(entry));
40 uint32_t pool_intern(const char *key)
42 /* Canonicalize key */
43 struct node *match = NULL, *node;
47 key_len = strlen(key) + 1;
48 node = node_pointer(node_alloc(1));
49 node->offset = string_alloc(key_len);
50 strcpy(node_value(node), key);
51 match = tree_search(&tree, node);
53 tree_insert(&tree, node);
59 return node_offset(node);
62 uint32_t pool_tok_r(char *str, const char *delim, char **saveptr)
64 char *token = strtok_r(str, delim, saveptr);
65 return token ? pool_intern(token) : ~0;
68 void pool_print_seq(uint32_t len, uint32_t *seq, char delim, FILE *stream)
71 for (i = 0; i < len && ~seq[i]; i++) {
72 fputs(pool_fetch(seq[i]), stream);
73 if (i < len - 1 && ~seq[i + 1])
78 uint32_t pool_tok_seq(uint32_t sz, uint32_t *seq, const char *delim, char *str)
87 token = pool_tok_r(str, delim, &context);
88 for (length = 0; length < sz; length++) {
92 token = pool_tok_r(NULL, delim, &context);