Added tables.c and rebuilt dependencies.

1 files changed, 100 insertions, 0 deletions

diff --git a/tables.c b/tables.c
new file mode 100644
index 0000000..8655ba6
--- /dev/null
+++ b/tables.c
@@ -0,0 +1,100 @@
+/*  tables.h - tables serialization code
+ *
+ *  Copyright (c) 1990 The Regents of the University of California.
+ *  All rights reserved.
+ *
+ *  This code is derived from software contributed to Berkeley by
+ *  Vern Paxson.
+ *
+ *  The United States Government has rights in this work pursuant
+ *  to contract no. DE-AC03-76SF00098 between the United States
+ *  Department of Energy and the University of California.
+ *
+ *  This file is part of flex.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ *  Neither the name of the University nor the names of its contributors
+ *  may be used to endorse or promote products derived from this software
+ *  without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ *  IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ *  PURPOSE.
+ */
+
+
+#include "flexdef.h"
+
+#define yypad64(n) ((8-((n)%8))%8)
+
+void yytbl_hdr_init(struct yytbl_hdr *th, const char * version_str, const char *name)
+{
+    memset(th, 0, sizeof(struct yytbl_hdr));
+    
+    th->th_magic = 0xF13C57B1;
+    th->th_hsize = yypad64(20 + strlen(version_str) + 1 + strlen(name)+ 1);
+    th->th_ssize = 0; // Not known at this point.
+    th->th_flags = 0;
+    th->th_version = copy_string(version_str);
+    th->th_name = copy_string(name);
+}
+
+int yytbl_hdr_write(FILE* fp, struct yytbl_hdr * th)
+{
+    uint32_t i32; /* temp variables. */
+    uint16_t i16;
+    size_t sz,rv;
+    int pad,bwritten=0;
+
+#define WRITEORERR(val,Bsz) \
+    do {  i ##Bsz = htonl(val);\
+          if ((rv=fwrite(&i ##Bsz, Bsz/8, 1, fp)) != (Bsz)/8)\
+                return 1;\
+          bwritten += rv;\
+    }while(0)
+
+
+    WRITEORERR(th->th_magic, 32);
+    WRITEORERR(th->th_hsize, 32);
+    WRITEORERR(th->th_ssize, 32);
+    WRITEORERR(th->th_flags, 16);
+
+    sz = strlen(th->th_version)+1;
+    if ((rv=fwrite(th->th_version,1,sz,fp)) != sz)
+        return 1;
+    bwritten += rv;
+
+    sz = strlen(th->th_name)+1;
+    if ((rv=fwrite(th->th_name,1,sz,fp)) != sz)
+        return 1;
+    bwritten += rv;
+
+    /* add padding */
+    pad = yypad64(bwritten) - bwritten;
+    while(pad-- > 0) {
+        uint8_t c =0;
+        if ((rv=fwrite(&c,sizeof(uint8_t),1,fp)) != 1)
+            return 1;
+        bwritten++;
+    }
+
+    /* Sanity check */
+    if (bwritten != th->th_hsize){
+        /* Oops. */
+        return 1;
+    }
+
+    return 0;
+}
+
+/* vim:set expandtab cindent tabstop=4 softtabstop=4 shiftwidth=4 textwidth=0: */