[PATCH 3/2] TEST CODE

[Gao Xiang]

This reverts commit ad879589e4a281cbd05a1fd9c8d8865a34cd8d87.
---
 lib/gzran.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/lib/gzran.c b/lib/gzran.c
index 6a6fddc..6d55c4a 100644
--- a/lib/gzran.c
+++ b/lib/gzran.c
@@ -390,3 +390,54 @@ struct erofs_vfile *erofs_gzran_zinfo_open(struct erofs_vfile *vin,
 	return ERR_PTR(-EOPNOTSUPP);
 }
 #endif
+
+#ifdef TEST
+#include <fcntl.h>
+
+int main(int argc, char *argv[])
+{
+	struct erofs_vfile vin, *vout;
+	int zinfo_len, fd, len, offset;
+	char *zinfo_buf;
+	char *outbuf;
+
+	if (argc < 5)
+		exit(1);
+	fd = open(argv[2], O_RDONLY);
+	if (fd < 0)
+		exit(1);
+	zinfo_len = lseek(fd, 0, SEEK_END);
+	if (zinfo_len < 0)
+		exit(1);
+	(void)lseek(fd, 0, SEEK_SET);
+
+	zinfo_buf = malloc(zinfo_len);
+	if (!zinfo_buf)
+		exit(1);
+	if (read(fd, zinfo_buf, zinfo_len) < zinfo_len)
+		exit(1);
+	close(fd);
+
+	fd = open(argv[1], O_RDONLY);
+	if (fd < 0)
+		exit(1);
+	vin = (struct erofs_vfile) {.fd = fd};
+
+	vout = erofs_gzran_zinfo_open(&vin, zinfo_buf, zinfo_len);
+	if (IS_ERR(vout))
+		exit(1);
+	free(zinfo_buf);
+
+	len = atoi(argv[4]);
+	offset = atoi(argv[3]);
+
+	outbuf = malloc(len);
+	if (!outbuf)
+		exit(1);
+	erofs_io_pread(vout, outbuf, len, offset);
+	write(STDOUT_FILENO, outbuf, len);
+	erofs_io_close(vout);
+	return 0;
+}
+
+#endif
-- 
2.43.5