1 files changed, 76 insertions, 0 deletions
diff --git a/girepository/cmph/hash.h b/girepository/cmph/hash.h
new file mode 100644
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+++ b/girepository/cmph/hash.h
@@ -0,0 +1,76 @@
+#ifndef __CMPH_HASH_H__
+#define __CMPH_HASH_H__
+
+#include "cmph_types.h"
+
+typedef union __hash_state_t hash_state_t;
+
+hash_state_t *hash_state_new(CMPH_HASH, cmph_uint32 hashsize);
+
+/** \fn cmph_uint32 hash(hash_state_t *state, const char *key, cmph_uint32 keylen);
+ *  \param state is a pointer to a hash_state_t structure
+ *  \param key is a pointer to a key
+ *  \param keylen is the key length
+ *  \return an integer that represents a hash value of 32 bits.
+ */
+cmph_uint32 hash(hash_state_t *state, const char *key, cmph_uint32 keylen);
+
+/** \fn void hash_vector(hash_state_t *state, const char *key, cmph_uint32 keylen, cmph_uint32 * hashes);
+ *  \param state is a pointer to a hash_state_t structure
+ *  \param key is a pointer to a key
+ *  \param keylen is the key length
+ *  \param hashes is a pointer to a memory large enough to fit three 32-bit integers.
+ */
+void hash_vector(hash_state_t *state, const char *key, cmph_uint32 keylen, cmph_uint32 * hashes);
+
+void hash_state_dump(hash_state_t *state, char **buf, cmph_uint32 *buflen);
+
+hash_state_t * hash_state_copy(hash_state_t *src_state);
+
+hash_state_t *hash_state_load(const char *buf, cmph_uint32 buflen);
+
+void hash_state_destroy(hash_state_t *state);
+
+/** \fn void hash_state_pack(hash_state_t *state, void *hash_packed);
+ *  \brief Support the ability to pack a hash function into a preallocated contiguous memory space pointed by hash_packed.
+ *  \param state points to the hash function
+ *  \param hash_packed pointer to the contiguous memory area used to store the hash function. The size of hash_packed must be at least hash_state_packed_size()
+ *  
+ * Support the ability to pack a hash function into a preallocated contiguous memory space pointed by hash_packed.
+ * However, the hash function type must be packed outside.
+ */
+void hash_state_pack(hash_state_t *state, void *hash_packed);
+
+/** \fn cmph_uint32 hash_packed(void *hash_packed, CMPH_HASH hashfunc, const char *k, cmph_uint32 keylen);
+ *  \param hash_packed is a pointer to a contiguous memory area
+ *  \param hashfunc is the type of the hash function packed in hash_packed
+ *  \param key is a pointer to a key
+ *  \param keylen is the key length
+ *  \return an integer that represents a hash value of 32 bits.
+ */
+cmph_uint32 hash_packed(void *hash_packed, CMPH_HASH hashfunc, const char *k, cmph_uint32 keylen);
+
+/** \fn cmph_uint32 hash_state_packed_size(CMPH_HASH hashfunc)
+ *  \brief Return the amount of space needed to pack a hash function.
+ *  \param hashfunc function type
+ *  \return the size of the packed function or zero for failures
+ */ 
+cmph_uint32 hash_state_packed_size(CMPH_HASH hashfunc);
+
+
+/** \fn hash_vector_packed(void *hash_packed, CMPH_HASH hashfunc, const char *k, cmph_uint32 keylen, cmph_uint32 * hashes);
+ *  \param hash_packed is a pointer to a contiguous memory area
+ *  \param key is a pointer to a key
+ *  \param keylen is the key length
+ *  \param hashes is a pointer to a memory large enough to fit three 32-bit integers.
+ */
+void hash_vector_packed(void *hash_packed, CMPH_HASH hashfunc, const char *k, cmph_uint32 keylen, cmph_uint32 * hashes);
+
+
+/** \fn CMPH_HASH hash_get_type(hash_state_t *state);
+ *  \param state is a pointer to a hash_state_t structure
+ *  \return the hash function type pointed by state
+ */
+CMPH_HASH hash_get_type(hash_state_t *state);
+
+#endif