initial import

1 files changed, 30 insertions, 0 deletions

diff --git a/include/aho-corasick.h b/include/aho-corasick.h
new file mode 100644
index 0000000..a468256
--- /dev/null
+++ b/include/aho-corasick.h
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#define AC_BUF_SIZE       65536
+#define AC_ALPHABET_SIZE  256
+
+// forward declaration to allow users to define context
+struct ac_context;
+
+typedef struct ac_match {
+	const char *id;
+	size_t      offset;
+	size_t      len;
+} ac_match_t;
+
+typedef struct ac_context ac_context_t;
+typedef struct pattern_node ac_node_t;
+typedef struct pattern_entry ac_pattern_t;
+
+typedef void (*ac_callback)(const ac_match_t *match, void *user_data);
+
+ac_context_t *ac_new(void);
+void ac_free(ac_context_t *ctx);
+int ac_add_pattern(ac_context_t *ctx, const char *id, const uint8_t *pattern, size_t len);
+int ac_build(ac_context_t *ctx);
+int ac_match(ac_context_t *ctx, const uint8_t *data, size_t len, ac_callback cb, void *user_data);
+int ac_match_fd(ac_context_t *ctx, int fd, ac_callback cb, void *user_data);
+int ac_match_path(ac_context_t *ctx, const char *path, ac_callback cb, void *user_data);