Format using clang-format.
diff --git a/lib/zip_io_util.c b/lib/zip_io_util.c
index 53a5dd2..77be8f0 100644
--- a/lib/zip_io_util.c
+++ b/lib/zip_io_util.c
@@ -1,10 +1,10 @@
 /*
  zip_io_util.c -- I/O helper functions
  Copyright (C) 1999-2016 Dieter Baron and Thomas Klausner
- 
+
  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <libzip@nih.at>
- 
+
  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions
  are met:
@@ -17,7 +17,7 @@
  3. The names of the authors may not be used to endorse or promote
  products derived from this software without specific prior
  written permission.
- 
+
  THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -37,8 +37,7 @@
 #include "zipint.h"
 
 int
-_zip_read(zip_source_t *src, zip_uint8_t *b, zip_uint64_t length, zip_error_t *error)
-{
+_zip_read(zip_source_t *src, zip_uint8_t *b, zip_uint64_t length, zip_error_t *error) {
     zip_int64_t n;
 
     if (length > ZIP_INT64_MAX) {
@@ -61,10 +60,9 @@
 
 
 zip_uint8_t *
-_zip_read_data(zip_buffer_t *buffer, zip_source_t *src, size_t length, bool nulp, zip_error_t *error)
-{
+_zip_read_data(zip_buffer_t *buffer, zip_source_t *src, size_t length, bool nulp, zip_error_t *error) {
     zip_uint8_t *r;
-    
+
     if (length == 0 && !nulp) {
 	return NULL;
     }
@@ -76,13 +74,13 @@
     }
 
     if (buffer) {
-        zip_uint8_t *data = _zip_buffer_get(buffer, length);
-        
-        if (data == NULL) {
-            zip_error_set(error, ZIP_ER_MEMORY, 0);
-            free(r);
-            return NULL;
-        }
+	zip_uint8_t *data = _zip_buffer_get(buffer, length);
+
+	if (data == NULL) {
+	    zip_error_set(error, ZIP_ER_MEMORY, 0);
+	    free(r);
+	    return NULL;
+	}
 	memcpy(r, data, length);
     }
     else {
@@ -96,7 +94,7 @@
 	zip_uint8_t *o;
 	/* replace any in-string NUL characters with spaces */
 	r[length] = 0;
-	for (o=r; o<r+length; o++)
+	for (o = r; o < r + length; o++)
 	    if (*o == '\0')
 		*o = ' ';
     }
@@ -106,12 +104,11 @@
 
 
 zip_string_t *
-_zip_read_string(zip_buffer_t *buffer, zip_source_t *src, zip_uint16_t len, bool nulp, zip_error_t *error)
-{
+_zip_read_string(zip_buffer_t *buffer, zip_source_t *src, zip_uint16_t len, bool nulp, zip_error_t *error) {
     zip_uint8_t *raw;
     zip_string_t *s;
 
-    if ((raw=_zip_read_data(buffer, src, len, nulp, error)) == NULL)
+    if ((raw = _zip_read_data(buffer, src, len, nulp, error)) == NULL)
 	return NULL;
 
     s = _zip_string_new(raw, len, ZIP_FL_ENC_GUESS, error);
@@ -121,18 +118,17 @@
 
 
 int
-_zip_write(zip_t *za, const void *data, zip_uint64_t length)
-{
+_zip_write(zip_t *za, const void *data, zip_uint64_t length) {
     zip_int64_t n;
-    
+
     if ((n = zip_source_write(za->src, data, length)) < 0) {
-        _zip_error_set_from_source(&za->error, za->src);
-        return -1;
+	_zip_error_set_from_source(&za->error, za->src);
+	return -1;
     }
     if ((zip_uint64_t)n != length) {
-        zip_error_set(&za->error, ZIP_ER_WRITE, EINTR);
-        return -1;
+	zip_error_set(&za->error, ZIP_ER_WRITE, EINTR);
+	return -1;
     }
-    
+
     return 0;
 }