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22 * @author Bartlomiej Polot
23 * @file regex/regex_block_lib.h
24 * @brief common function to manipulate blocks stored by regex in the DHT
27 #ifndef REGEX_BLOCK_LIB_H_
28 #define REGEX_BLOCK_LIB_H_
34 /* keep Emacsens' auto-indent happy */
40 #include "block_regex.h"
43 * Check if the regex block is well formed, including all edges.
45 * @param block The start of the block.
46 * @param size The size of the block.
47 * @param xquery String describing the edge we are looking for.
48 * Can be NULL in case this is a put block.
50 * @return GNUNET_OK in case it's fine.
51 * GNUNET_NO in case the xquery exists and is not found (IRRELEVANT).
52 * GNUNET_SYSERR if the block is invalid.
55 GNUNET_REGEX_block_check (const struct RegexBlock *block,
60 * Iterator over edges in a block.
63 * @param token Token that follows to next state.
64 * @param len Length of token.
65 * @param key Hash of next state.
67 * @return GNUNET_YES if should keep iterating, GNUNET_NO otherwise.
69 typedef int (*GNUNET_REGEX_EgdeIterator)(void *cls,
72 const struct GNUNET_HashCode *key);
76 * Iterate over all edges of a block of a regex state.
78 * @param block Block to iterate over.
79 * @param size Size of block.
80 * @param iterator Function to call on each edge in the block.
81 * @param iter_cls Closure for the iterator.
83 * @return GNUNET_SYSERR if an error has been encountered.
84 * GNUNET_OK if no error has been encountered.
85 * Note that if the iterator stops the iteration by returning
86 * GNUNET_NO, the block will no longer be checked for further errors.
87 * The return value will be GNUNET_OK meaning that no errors were
88 * found until the edge last notified to the iterator, but there might
89 * be errors in further edges.
92 GNUNET_REGEX_block_iterate (const struct RegexBlock *block,
94 GNUNET_REGEX_EgdeIterator iterator,
97 #if 0 /* keep Emacsens' auto-indent happy */
104 /* ifndef REGEX_BLOCK_LIB_H */
106 /* end of regex_block_lib.h */