]> git.ozlabs.org Git - ccan/blobdiff - ccan/hashtable/_info
hashtable: replaced by htable.
[ccan] / ccan / hashtable / _info
diff --git a/ccan/hashtable/_info b/ccan/hashtable/_info
deleted file mode 100644 (file)
index 0974c15..0000000
+++ /dev/null
@@ -1,119 +0,0 @@
-#include <string.h>
-#include <stdio.h>
-
-/**
- * hashtable - hash table routines
- *
- * A hash table is an efficient structure for looking up keys.  This version
- * grows with usage and allows efficient deletion.
- *
- * Caveat: pointers placed into the hash must be aligned to 64 bits.
- * ie. from malloc or because the structure they point to is aligned.
- * An assert will be raised if this isn't true.
- *
- * Example:
- *     #include <ccan/hashtable/hashtable.h>
- *     #include <ccan/hash/hash.h>
- *     #include <stdio.h>
- *     #include <err.h>
- *     #include <string.h>
- *     
- *     struct name_to_digit {
- *             const char *name;
- *             unsigned int val;
- *     };
- *     
- *     static struct name_to_digit map[] = { 
- *             { "zero", 0},
- *             { "one", 1 },
- *             { "two", 2 },
- *             { "three", 3 },
- *             { "four", 4 },
- *             { "five", 5 },
- *             { "six", 6 },
- *             { "seven", 7 },
- *             { "eight", 8 },
- *             { "nine", 9 }
- *     };
- *     
- *     // Wrapper for rehash function pointer.
- *     static unsigned long rehash(const void *e, void *unused)
- *     {
- *             return hash_string(((struct name_to_digit *)e)->name);
- *     }
- *     
- *     // Comparison function.
- *     static bool streq(const void *e, void *string)
- *     {
- *             return strcmp(((struct name_to_digit *)e)->name, string) == 0;
- *     }
- *     
- *     // We let them add their own aliases, eg. --alias=v=5
- *     static void add_alias(struct hashtable *ht, const char *alias)
- *     {
- *             char *eq;
- *             struct name_to_digit *n;
- *     
- *             n = malloc(sizeof(*n));
- *             n->name = strdup(alias);
- *     
- *             eq = strchr(n->name, '=');
- *             if (!eq || ((n->val = atoi(eq+1)) == 0 && !strcmp(eq+1, "0")))
- *                     errx(1, "Usage: --alias=<name>=<value>");
- *             *eq = '\0';
- *             hashtable_add(ht, hash_string(n->name), n);
- *     }
- *     
- *     int main(int argc, char *argv[])
- *     {
- *             struct hashtable *ht;
- *             unsigned int i;
- *             unsigned long val;
- *     
- *             if (argc < 2)
- *                     errx(1, "Usage: %s [--alias=<name>=<val>]... <str>...",
- *                          argv[0]);
- *     
- *             // Create and populate hash table.
- *             ht = hashtable_new(rehash, NULL);
- *             for (i = 0; i < sizeof(map)/sizeof(map[0]); i++)
- *                     hashtable_add(ht, hash_string(map[i].name), &map[i]);
- *     
- *             // Add any aliases to the hash table.
- *             for (i = 1; i < argc; i++) {
- *                     if (!strncmp(argv[i], "--alias=", strlen("--alias=")))
- *                             add_alias(ht, argv[i] + strlen("--alias="));
- *                     else
- *                             break;
- *             }
- *     
- *             // Find the other args in the hash table.
- *             for (val = 0; i < argc; i++) {
- *                     struct name_to_digit *n;
- *                     n = hashtable_find(ht, hash_string(argv[i]),
- *                                        streq, argv[i]);
- *                     if (!n)
- *                             errx(1, "Invalid digit name %s", argv[i]);
- *                     // Append it to the value we are building up.
- *                     val *= 10;
- *                     val += n->val;
- *             }
- *             printf("%lu\n", val);
- *             return 0;
- *     }
- *
- * License: GPLv2 (or later)
- * Author: Rusty Russell <rusty@rustcorp.com.au>
- */
-int main(int argc, char *argv[])
-{
-       if (argc != 2)
-               return 1;
-
-       if (strcmp(argv[1], "depends") == 0) {
-               printf("ccan/typesafe_cb\n");
-               return 0;
-       }
-
-       return 1;
-}