common: Add separate header for zb32.c.

* common/util.h (zb32_encode): Move prototype to ...
* common/zb32.h: new.  Include this for all callers of zb32_encode.

Signed-off-by: Werner Koch <wk@gnupg.org>

3 files changed, 39 insertions, 6 deletions

diff --git a/common/Makefile.am b/common/Makefile.am
index 6cbde0bc0..fd3a04f4f 100644
--- a/common/Makefile.am
+++ b/common/Makefile.am
@@ -64,7 +64,7 @@ common_sources = \
 	homedir.c \
 	gettime.c gettime.h \
 	yesno.c \
-	b64enc.c b64dec.c zb32.c \
+	b64enc.c b64dec.c zb32.c zb32.h \
 	convert.c \
 	percent.c \
 	mbox-util.c mbox-util.h \
diff --git a/common/util.h b/common/util.h
index 06d5f8772..b2651c444 100644
--- a/common/util.h
+++ b/common/util.h
@@ -274,11 +274,6 @@ gpg_error_t b64dec_proc (struct b64state *state, void *buffer, size_t length,
                          size_t *r_nbytes);
 gpg_error_t b64dec_finish (struct b64state *state);
 
-
-/*-- zb32.c --*/
-char *zb32_encode (const void *data, unsigned int databits);
-
-
 /*-- sexputil.c */
 char *canon_sexp_to_string (const unsigned char *canon, size_t canonlen);
 void log_printcanon (const char *text,
diff --git a/common/zb32.h b/common/zb32.h
new file mode 100644
index 000000000..1fb41ecae
--- /dev/null
+++ b/common/zb32.h
@@ -0,0 +1,38 @@
+/* zb32.h - z-base-32 functions
+ * Copyright (C) 2014  Werner Koch
+ *
+ * This file is part of GnuPG.
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of either
+ *
+ *   - the GNU Lesser General Public License as published by the Free
+ *     Software Foundation; either version 3 of the License, or (at
+ *     your option) any later version.
+ *
+ * or
+ *
+ *   - the GNU General Public License as published by the Free
+ *     Software Foundation; either version 2 of the License, or (at
+ *     your option) any later version.
+ *
+ * or both in parallel, as here.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GNUPG_COMMON_ZB32_H
+#define GNUPG_COMMON_ZB32_H
+
+/* Encode DATA which has a length of DATABITS (bits!) using the
+   zbase32 encoder and return a malloced string.  Returns NULL on
+   error and sets ERRNO.  */
+char *zb32_encode (const void *data, unsigned int databits);
+
+#endif /*GNUPG_COMMON_ZB32_H*/