1 files changed, 25 insertions, 0 deletions

diff --git a/src/ot_scan.h b/src/ot_scan.h
new file mode 100644
index 0000000..a79ec13
--- /dev/null
+++ b/src/ot_scan.h
@@ -0,0 +1,25 @@
+/* This software was written by Dirk Engling <erdgeist@erdgeist.org>
+   It is considered beerware. Prost. Skol. Cheers or whatever. */
+
+#ifndef OT_SCAN_H__
+#define OT_SCAN_H__
+
+#include <stddef.h>
+#include <stddef.h>
+#include <stdint.h>
+
+/* Read an unsigned decimal number from src into dest and return how many
+   characters were consumed. Returns zero and leaves dest untouched when src
+   does not begin with a digit, or when the value would exceed max. */
+size_t scan_uint(const char *src, uint64_t *dest, uint64_t max);
+
+/* As scan_uint, but following the bencode integer grammar, which permits a
+   leading zero on zero alone. */
+size_t scan_uint_bencode(const char *src, uint64_t *dest, uint64_t max);
+
+/* Read a signed decimal number that has to take up exactly len characters,
+   which is how a value lifted out of a query string arrives. Returns 0, or
+   -1 leaving dest untouched. */
+int    scan_int(const char *src, size_t len, int64_t *dest);
+
+#endif