Use xread_char to save a few bytes, fix indenting of comments

diff --git a/archival/libunarchive/check_header_gzip.c b/archival/libunarchive/check_header_gzip.c
index e8bb8d5..d661df7 100644 (file)
--- a/archival/libunarchive/check_header_gzip.c
+++ b/archival/libunarchive/check_header_gzip.c
@@ -17,7 +17,7 @@ extern void check_header_gzip(int src_fd)
 
        xread_all(src_fd, header.raw, 8);
 
-   /* Check the compression method */
+       /* Check the compression method */
        if (header.formated.method != 8) {
                error_msg_and_die("Unknown compression method %d",
                                                  header.formated.method);
@@ -27,41 +27,30 @@ extern void check_header_gzip(int src_fd)
                /* bit 2 set: extra field present */
                unsigned char extra_short;
 
-               extra_short = xread_char(src_fd);
-               extra_short += xread_char(src_fd) << 8;
+               extra_short = xread_char(src_fd) + (xread_char(src_fd) << 8);
                while (extra_short > 0) {
-                  /* Ignore extra field */
+                       /* Ignore extra field */
                        xread_char(src_fd);
                        extra_short--;
                }
        }
 
-   /* Discard original name if any */
+       /* Discard original name if any */
        if (header.formated.flags & 0x08) {
-          /* bit 3 set: original file name present */
-               char tmp;
-
-               do {
-                       read(src_fd, &tmp, 1);
-               } while (tmp != 0);
+               /* bit 3 set: original file name present */
+               while(xread_char(src_fd) != 0);
        }
 
-   /* Discard file comment if any */
+       /* Discard file comment if any */
        if (header.formated.flags & 0x10) {
-          /* bit 4 set: file comment present */
-               char tmp;
-
-               do {
-                       read(src_fd, &tmp, 1);
-               } while (tmp != 0);
+               /* bit 4 set: file comment present */
+               while(xread_char(src_fd) != 0);
        }
 
-   /* Read the header checksum */
+       /* Read the header checksum */
        if (header.formated.flags & 0x02) {
-               char tmp;
-
-               read(src_fd, &tmp, 1);
-               read(src_fd, &tmp, 1);
+               xread_char(src_fd);
+               xread_char(src_fd);
        }
 
        return;