X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/a1e745ad3b306d1e5173588e39d71b132466365e..18b3351a3791f19a63c0af05640719db8eb5d184:/cc.h

diff --git a/cc.h b/cc.h
index b7a2b27..04ff17f 100644
--- a/cc.h
+++ b/cc.h
@@ -289,6 +289,97 @@ Options:\n\
 extern int cmd_encode(int /*argc*/, char */*argv*/[]);
 extern int cmd_decode(int /*argc*/, char */*argv*/[]);
 
+/*----- Hash encoding functions -------------------------------------------*/
+
+/* --- Table --- */
+
+#define ENCODINGS(_)							\
+  _(HEX, hex)								\
+  _(BASE64, base64)							\
+  _(BASE32, base32)
+
+enum {
+#define ENUM(tag, name) ENC_##tag,
+  ENCODINGS(ENUM)
+#undef ENUM
+  ENC_LIMIT
+};
+
+typedef struct encodeops {
+  const char *name;
+  void (*put)(const octet *, size_t, FILE *);
+  size_t (*get)(const char *, octet *, size_t, char **);
+} encodeops;
+
+extern const encodeops encodingtab[];
+
+/* --- @getencoding@ --- *
+ *
+ * Arguments:	@const char *ename@ = encoding name
+ *
+ * Returns:	Pointer to encoding table entry, or null.
+ *
+ * Use:		Finds an encoding entry given its name.
+ */
+
+extern const encodeops *getencoding(const char */*ename*/);
+
+/*----- File hashing ------------------------------------------------------*/
+
+/* --- @fhash@ --- *
+ *
+ * Arguments:	@const gchash *gch@ = pointer to hash function to use
+ *		@unsigned f@ = flags to set
+ *		@const char *file@ = file name to be hashed (null for stdin)
+ *		@void *buf@ = pointer to hash output buffer
+ *
+ * Returns:	Zero if it worked, nonzero on error.
+ *
+ * Use:		Hashes a file.
+ */
+
+#define FHF_BINARY 256u
+#define FHF_PROGRESS 512u
+
+#define FHF_MASK 3840
+
+extern int fhash(const gchash */*gch*/, unsigned /*f*/,
+		 const char */*file*/, void */*buf*/);
+
+/*----- String I/O --------------------------------------------------------*/
+
+#define GSF_RAW 4096u
+#define GSF_FILE 0u
+#define GSF_STRING 8192u
+
+#define GSF_MASK 61440u
+
+/* --- @getstring@ --- *
+ *
+ * Arguments:	@void *in@ = input source
+ *		@dstr *d@ = destination string
+ *		@unsigned f@ = input flags
+ *
+ * Returns:	Zero if OK, nonzero on end-of-file.
+ *
+ * Use:		Reads a filename (or something similar) from a stream.
+ */
+
+extern int getstring(void */*in*/, dstr */*d*/, unsigned /*f*/);
+
+/* --- @putstring@ --- *
+ *
+ * Arguments:	@FILE *fp@ = stream to write on
+ *		@const char *p@ = pointer to text
+ *		@unsigned f@ = output flags
+ *
+ * Returns:	---
+ *
+ * Use:		Emits a string to a stream.
+ */
+
+extern void putstring(FILE */*fp*/, const char */*p*/, unsigned /*f*/);
+
 /*----- Lists of things ---------------------------------------------------*/
 
 /* --- @LIST(STRING, FP, END-TEST, NAME-EXPR)@ --- *