1 files changed, 10 insertions, 10 deletions

diff --git a/util.c b/util.c
index 9c7e1a3..7bd9025 100644
--- a/util.c
+++ b/util.c
@@ -13,27 +13,27 @@ int uniqid(void) {
 	return i++;
 }
 
-void xxd(const void *buf_, size_t length) {
+void xxd(FILE *stream, const void *buf_, size_t length) {
 	unsigned char *buf = (unsigned char*)buf_;
 
 	for (size_t cursor = 0; cursor < length;) {
-		printf("%08zx:", cursor);
+		fprintf(stream, "%08zx:", cursor);
 
 		for (int i = 0; i < 16; i++) {
-			if (i % 2 == 0) printf(" ");
-			if (i % 8 == 0) printf(" ");
-			if (cursor + i < length) printf("%02x", (unsigned)buf[cursor + i]);
-			else printf("  ");
+			if (i % 2 == 0) fprintf(stream, " ");
+			if (i % 8 == 0) fprintf(stream, " ");
+			if (cursor + i < length) fprintf(stream, "%02x", (unsigned)buf[cursor + i]);
+			else fprintf(stream, "  ");
 		}
 
-		printf("  |");
+		fprintf(stream, "  |");
 
 		for (int i = 0; i < 16 && cursor + i < length; i++) {
-			if (isprint(buf[cursor + i])) printf("%c", buf[cursor + i]);
-			else printf(".");
+			if (isprint(buf[cursor + i])) fprintf(stream, "%c", buf[cursor + i]);
+			else fprintf(stream, ".");
 		}
 
-		printf("|\n");
+		fprintf(stream, "|\n");
 
 		cursor += 16;
 	}