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unzip-6.0/gbloffs.c  view on Meta::CPAN

/*
  Copyright (c) 1990-2002 Info-ZIP.  All rights reserved.

  See the accompanying file LICENSE, version 2000-Apr-09 or later
  (the contents of which are also included in unzip.h) for terms of use.
  If, for some reason, all these files are missing, the Info-ZIP license
  also may be found at:  ftp://ftp.info-zip.org/pub/infozip/license.html
*/
/* Write out a fragment of assembly or C preprocessor source giving offsets
 * in "Uz_Globs" and "struct huft".  Used by Amiga and Human68k ports.
 */

#define UNZIP_INTERNAL
#include "unzip.h"
#include "crypt.h"

#ifndef REENTRANT
  Uz_Globs G;
#endif

static int asm_setflag(const char *flagname);
static int ccp_setflag(const char *flagname);

static int asm_setflag(const char *flagname)
{
    static const char asm_flagdef[] = "   IFND %s\n%-15s EQU     1\n   ENDC\n";
    return printf(asm_flagdef, flagname, flagname);
}
static int ccp_setflag(const char *flagname)
{
    static const char ccp_flagdef[] = "#ifndef %s\n#  define %s\n#endif\n";
    return printf(ccp_flagdef, flagname, flagname);
}

int main(argc, argv)
    int argc;
    char **argv;
{
#ifdef REENTRANT
    Uz_Globs *pG = NULL;
#endif
    struct huft *t = NULL;
    static const char asm_offsdef[] = "%-15s EQU     %lu\n";
    static const char ccp_offsdef[] = "#define %-15s %lu\n";

    const char *out_format;
    int (*set_flag)(const char *flagname);
    int ccp_select = 0;

    if (argc > 1 && argv[1] != NULL && !strcmp(argv[1], "-ccp"))
      ccp_select = 1;

    if (ccp_select) {
        out_format = ccp_offsdef;
        set_flag = ccp_setflag;
    } else {
        out_format = asm_offsdef;
        set_flag = asm_setflag;
    }

    printf(out_format, "h_e", (ulg)&t->e - (ulg)t);
    printf(out_format, "h_b", (ulg)&t->b - (ulg)t);
    printf(out_format, "h_v_n", (ulg)&t->v.n - (ulg)t);
    printf(out_format, "h_v_t", (ulg)&t->v.t - (ulg)t);
    printf(out_format, "SIZEOF_huft", (ulg)sizeof(struct huft));

    printf(out_format, "bb", (ulg)&G.bb - (ulg)&G);
    printf(out_format, "bk", (ulg)&G.bk - (ulg)&G);
    printf(out_format, "wp", (ulg)&G.wp - (ulg)&G);