Don't truncate files at end of tar content

write.c

@@ -116,9 +116,9 @@ void pixz_write(bool tar, uint32_t level) {
 static void read_thread() {
     debug("reader: start");
     
+    if (gTar) {
 		struct archive *ar = archive_read_new();
 	    archive_read_support_compression_none(ar);
-    if (gTar)
 	    archive_read_support_format_tar(ar);
 	    archive_read_support_format_raw(ar);
 	    archive_read_open(ar, NULL, tar_ok, tar_read, tar_ok);
@@ -134,15 +134,24 @@ static void read_thread() {
 	            die("Error reading archive entry");
 	        }
         
-        if (archive_format(ar) == ARCHIVE_FORMAT_RAW)
+	        if (archive_format(ar) == ARCHIVE_FORMAT_RAW) {
 	            gTar = false;
-        if (gTar) {
+				break;
+			}
             add_file(archive_read_header_position(ar),
                 archive_entry_pathname(entry));
 	    }
-    }
+		if (archive_read_header_position(ar) == 0)
+			gTar = false; // probably spuriously identified as tar
     	archive_read_finish(ar);
+	}
+	if (!feof(gInFile)) {
+		const void *dummy;
+		while (tar_read(NULL, NULL, &dummy) != 0)
+			; // just keep pumping
+	}
     fclose(gInFile);
+    
 	if (gTar)
         add_file(gTotalRead, NULL);