33 lines
874 B
C
33 lines
874 B
C
#include <cmph.h>
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#include <stdio.h>
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#include <string.h>
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// Create minimal perfect hash function from in-disk keys using BDZ algorithm
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int main(int argc, char **argv)
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{
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//Open file with newline separated list of keys
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FILE * keys_fd = fopen("keys.txt", "r");
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cmph_t *hash = NULL;
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if (keys_fd == NULL)
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{
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fprintf(stderr, "File \"keys.txt\" not found\n");
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exit(1);
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}
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// Source of keys
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cmph_io_adapter_t *source = cmph_io_nlfile_adapter(keys_fd);
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cmph_config_t *config = cmph_config_new(source);
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cmph_config_set_algo(config, CMPH_BDZ);
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hash = cmph_new(config);
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cmph_config_destroy(config);
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//Find key
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const char *key = "jjjjjjjjjj";
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unsigned int id = cmph_search(hash, key, (cmph_uint32)strlen(key));
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fprintf(stderr, "Id:%u\n", id);
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//Destroy hash
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cmph_destroy(hash);
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cmph_io_nlfile_adapter_destroy(source);
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fclose(keys_fd);
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return 0;
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}
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